CN114012044A

CN114012044A - Iron mold box locking device and method for iron mold sand-lined casting pouring roller way

Info

Publication number: CN114012044A
Application number: CN202111098371.4A
Authority: CN
Inventors: 潘东杰; 夏小江; 高强; 应浩; 朱丹; 汤瑶; 胡鸿斌
Original assignee: Zhejiang Institute of Mechanical and Electrical Engineering Co Ltd
Current assignee: Zhejiang Institute of Mechanical and Electrical Engineering Co Ltd
Priority date: 2021-09-18
Filing date: 2021-09-18
Publication date: 2022-02-08
Anticipated expiration: 2041-09-18
Also published as: CN114012044B

Abstract

The invention relates to an iron-type box locking device and a method, belonging to the machinery. The device comprises a locking hydraulic cylinder, a piston rod, an upper pressing connecting rod, an upper pressing ejector rod, a lower pressing connecting rod, a lower pressing ejector rod, an upper pressing connecting rod seat, a lower pressing connecting rod seat, an upper limiting block and a lower limiting block, wherein the locking hydraulic cylinder is positioned outside a roller way frame, and a hinged joint of the piston rod of the locking hydraulic cylinder is connected with one end of the upper pressing connecting rod; the middle hinge hole of the upper pressing connecting rod is connected with the hinge joint of the upper pressing connecting rod seat; the upper pressing ejector rod is arranged at the other end of the upper pressing connecting rod; the bottom hinged joint of the locking hydraulic cylinder is connected with one end of the lower pressing connecting rod; the middle hinge hole of the lower connecting rod is connected with the hinge joint of the lower connecting rod seat; the lower push rod is arranged at the other end of the lower push connecting rod, the upper limiting block is arranged at one side of the upper push connecting rod seat, and the lower limiting block is arranged at one side of the lower push connecting rod seat. The invention has simple and reasonable structural design, automatically locks the upper and lower iron molds on the casting roller way, realizes the operation requirement of a mechanized and automated iron mold sand-lined casting production line, and has low manufacturing cost and convenient maintenance.

Description

Iron mold box locking device and method for iron mold sand-lined casting pouring roller way

Technical Field

The invention relates to a device and a method, in particular to a hydraulic box locking device and a method for the pouring and solidifying process of an upper iron mold and a lower iron mold of an automatic iron mold sand-lined casting production line, belonging to the machinery.

Background

The sand-lined casting of the iron mold is a green, efficient and energy-saving casting production technology, becomes one of typical production processes for producing high-quality castings, and is widely applied. In the sand-lined metal mold casting production, the upper and lower metal molds after mold assembling must be clamped and locked by a box clamp in the processes of molten iron pouring and subsequent casting solidification and cooling so as to prevent the molten iron from leaking from the parting surfaces of the upper and lower metal molds during the pouring process and the subsequent solidification and cooling process. For simple mechanization, the locking after the iron mold assembling generally adopts a manual box locking mode, a box clamp for iron mold locking locks an upper iron mold and a lower iron mold (as shown in fig. 1, the box clamp comprises an upper iron mold 1-1, a lower iron mold 1-2, a locking screw rod 1-3, an iron mold locking box buckle 1-4 and a locking box buckle body 1-5), and for a general mechanized iron mold sand-lined casting production line, the iron mold assembling still adopts a manual and mechanical locking mode to lock the iron mold, such as: the box clamp is manually placed at the upper iron-type locking part and the lower iron-type locking part, and then the operation workers are more than 2 persons usually in a mechanical assistance mode, and the operation labor intensity is high.

The locking of the upper and lower iron molds in the pouring process after the mold closing is realized in a mechanized and automated iron mold sand-lined casting production line, which becomes one of the bottlenecks of the realization of the automated and mechanized production of the iron mold sand-lined casting production line, especially how to ensure that the upper and lower iron molds are conveniently and automatically locked in the pouring and solidifying processes in the iron mold sand-lined casting production line adopting the pouring roller way pouring has very important significance for reducing operators, reducing the labor intensity of the operators, saving the production cost, improving the automation level of the production line and further popularizing the iron mold sand-lined casting technology.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, and provides the iron mold box locking device and the iron mold box locking method for the iron mold sand-lined casting roller way, which have the advantages of simple and reasonable structural design, safe and reliable operation, capability of automatically locking the upper iron mold and the lower iron mold on the casting roller way, realization of the operation requirements of a mechanized and automated iron mold sand-lined casting production line, low manufacturing cost and convenience in maintenance.

The technical scheme adopted by the invention for solving the problems is as follows: this a swage lock case device for sand lined metal mold casting pouring roller way, including locking pneumatic cylinder and piston rod, the front end of locking pneumatic cylinder is provided with piston rod, its characterized in that: the locking hydraulic cylinder is characterized by further comprising an upper pressing connecting rod, an upper pressing ejector rod, a lower pressing connecting rod, a lower pressing ejector rod, an upper pressing connecting rod seat, a lower pressing connecting rod seat, an upper limiting block and a lower limiting block, wherein the upper limiting block and the lower limiting block are used for respectively controlling the opening and closing distances of the upper pressing connecting rod and the lower pressing connecting rod at the same time; the middle hinge hole of the upper pressing connecting rod is connected with the hinge joint of the upper pressing connecting rod seat; the upper pressing ejector rod is arranged at the other end of the upper pressing connecting rod; the bottom hinged joint of the locking hydraulic cylinder is connected with one end of the lower pressing connecting rod; the middle hinge hole of the lower connecting rod is connected with the hinge joint of the lower connecting rod seat; the pressing mandril is arranged at the other end of the pressing connecting rod; the outer sides of the upper pressing connecting rod seat and the lower pressing connecting rod seat are respectively provided with an upper limiting block and a lower limiting block; the central line of the upper push rod and the central line of the lower push rod are on the same straight line and are vertical to the upper plane and the lower plane of the iron mold.

Preferably, the invention further comprises a connecting pin, and a piston rod hinge joint of the locking hydraulic cylinder is hinged with one end of the upper pressing connecting rod through the connecting pin; the middle hinge hole of the upper pressing connecting rod is hinged with the hinge joint of the upper pressing connecting rod seat through a connecting pin.

Preferably, the bottom hinged joint of the locking hydraulic cylinder is hinged with one end of a lower pressure connecting rod through a connecting pin; the middle hinge hole of the lower connecting rod is hinged with the hinge joint of the lower connecting rod seat through a connecting pin.

Preferably, the invention further comprises a locking nut, the upper ejector rod is screwed at the other end of the upper ejector rod through the upper threads of the upper ejector rod, and the extending distance of the upper ejector rod head is locked through the locking nut; through rotating the upper pressing ejector rod, the distance of the ejector rod head extending out of the bottom plane of the upper pressing connecting rod can be adjusted, so that the iron molds with different heights can be locked in a box closing mode.

Preferably, the lower push rod of the invention is screwed at the other end of the locking lower push connecting rod through the upper thread of the rod; the extending distance of the pressing ejector rod head is locked through a locking nut; through the rotatory ejector pin that pushes down, adjustable this ejector pin head stretches out the planar distance in push down connecting rod bottom to be used for the locking of mould assembling of not co-altitude swage.

Preferably, the invention also comprises a hydraulic cylinder splash guard which is fixed on the piston rod and ascends and descends along with the ascending and descending of the piston rod; the hydraulic cylinder sealing piece is prevented from being scratched when the piston rod is lifted and the hydraulic cylinder is damaged due to the fact that molten iron splashes to the rod body of the piston rod entering and exiting the oil cavity of the hydraulic cylinder when the molten iron is poured.

Preferably, the distance from the center of the middle hinge hole of the upper pressure connecting rod to the center of the upper connecting hinge hole of the upper locking hydraulic cylinder is equal to the distance from the center of the middle hinge hole of the lower pressure connecting rod to the center of the lower connecting hinge hole of the locking hydraulic cylinder.

The invention also provides a method for the iron mold box locking device of the sand lined iron mold casting roller way, which is characterized by comprising the following steps: in the molten iron pouring, solidifying and cooling production process of the sand-lined metal mold casting production line adopting the manner that the pouring roller table bears the metal mold, firstly, hydraulic oil is injected into a piston rod contraction cavity of a locking hydraulic cylinder of an iron-type locking device, so that piston rods of the locking hydraulic cylinders of box locking devices fixedly arranged at two sides of a casting roller way do retraction motion to drive an upper pressing connecting rod, a lower pressing connecting rod, an upper pressing ejector rod and a lower pressing ejector rod to be gradually opened, when the lower planes of the upper pressing connecting rod and the lower pressing connecting rod touch the limiting planes of an upper limiting block and a lower limiting block, the maximum opening positions of the upper pressing connecting rod, the lower pressing connecting rod, the upper pressing ejector rod and the lower pressing ejector rod are reached, the distance between the upper ejector rod head and the lower ejector rod head on the locking device is larger than the height size of the upper iron mold and the lower iron mold after the mold closing, meanwhile, the lower ejector rod head is lower than the lower plane of the lower iron mold, and the upper ejector rod head is higher than the upper plane of the upper iron mold; then conveying the upper and lower iron molds after being combined into a casting roller way in sequence, and arranging the upper and lower iron molds on each casting station of the casting roller way one by one; then, hydraulic oil is injected into a piston rod extending cavity of a locking hydraulic cylinder of the iron-type locking device to drive an upper pressing ejector rod to descend or a lower pressing ejector rod to ascend, when an upper pressing ejector rod head descends to an upper iron-type plane or a lower pressing ejector rod head ascends to a lower iron-type plane, the upper pressing ejector rod or the lower pressing ejector rod does not move any more, and the upper iron type and the lower iron type are tightly locked together by ejector heads of the upper pressing ejector rod and the lower pressing ejector rod; each pair of iron molds in the locking state is kept in an immovable state on each locking station on the casting roller way; then pouring molten iron into an iron mold casting mold, wherein in the process of pouring the molten iron and the subsequent solidification of the molten iron, a piston rod of a locking hydraulic cylinder extends out of a cylinder cavity and always keeps oil pressure, so that the iron mold locking device continuously keeps the locking effect on an upper iron mold and a lower iron mold; after the molten iron injected into the iron mold casting is solidified, hydraulic oil is injected into a piston rod contraction cavity of a locking hydraulic cylinder of the iron mold hydraulic locking device on each casting station, a piston rod of the hydraulic locking device retracts to drive an upper pressing connecting rod, a lower pressing connecting rod, an upper pressing ejector rod and a lower pressing ejector rod to be gradually opened, the upper pressing ejector rod head and the lower pressing ejector rod head are gradually separated from the upper plane and the lower plane of the iron mold, when the upper pressing connecting rod and the lower pressing connecting rod touch an upper limiting block and a lower limiting block, the upper pressing connecting rod, the lower pressing connecting rod, the upper pressing ejector rod and the lower pressing ejector rod are opened to the maximum position, the upper pressing ejector rod head and the lower pressing ejector rod head are completely separated from the upper plane and the lower plane of the iron mold, and the iron mold locking device is completely released and does not have a locking effect on the upper iron mold and the lower iron mold; and then the iron molds on the casting station can be sequentially moved out of the casting roller way one by one and enter the next production procedure, thereby completing the production processes of casting, solidifying and cooling molten iron in one period.

Compared with the prior art, the invention has the following advantages and effects: 1. the hydraulic locking device is simple and reasonable in overall structural design, and can be used for automatically locking upper and lower iron molds in the pouring and solidification processes in a pouring section by adopting a mechanical roller way to carry the upper and lower iron molds on an upper and lower iron mold sand-lined casting production line, so that the mechanized and automatic production operation of the process is realized; 2. the upper iron mold and the lower iron mold are automatically locked by hydraulic pressure, so that the operation of workers with high labor intensity in the original process is omitted; 3. the device can be used for locking iron molds with different heights on a production line through adjustment; 4. the synchronous locking of the upper iron mold and the lower iron mold is realized, the locking force is uniform, casting waste caused by uneven stress in the operation process of mold closing locking and non-synchronous locking of each locking position of the iron molds is reduced, and the yield of the sand-lined iron mold casting is improved; 5. the device has the advantages of simple structure, low manufacturing cost, safe and reliable operation and convenient maintenance.

Drawings

Fig. 1 is a first schematic view of a locking device and a locking state in a general iron mold pouring process.

Fig. 2 is a schematic diagram of a locking device and a locking state in a general iron mold pouring process.

Fig. 3 is a schematic structural diagram of an iron mold hydraulic box locking device for an iron mold sand-lined casting roller way according to an embodiment of the invention.

Fig. 4 is a schematic position diagram of an iron mold hydraulic box locking device for an iron mold sand-lined casting roller way according to an embodiment of the invention.

Fig. 5 is a schematic structural diagram of the iron mold hydraulic box locking device for the sand lined iron mold casting roller way, which is used for loosening iron molds with different heights.

Fig. 6 is a schematic structural diagram of the iron mold hydraulic box locking device for the sand lined iron mold casting roller way, which is used for locking iron molds with different heights.

Fig. 7 is a schematic structural diagram of an iron mold hydraulic box locking device for loosening thin iron molds with different heights, which is used for an iron mold sand-lined casting roller way according to an embodiment of the invention.

Fig. 8 is a schematic structural diagram of the locking structure of the iron mold hydraulic box locking device for the sand lined iron mold casting roller way for locking thin iron molds with different heights according to the embodiment of the invention.

Fig. 9 is a schematic structural view of the opening of the hydraulic cylinder in the adjustment of the upper ejector rod and the lower ejector rod when the iron mold hydraulic box locking device for the sand lined iron mold casting roller way is used for iron molds with different heights in the embodiment of the invention.

Fig. 10 is a schematic structural diagram of closing of a hydraulic cylinder in adjustment of an upper ejector rod and a lower ejector rod when the iron mold hydraulic lock box device for the sand lined iron mold casting roller way is used for iron molds with different heights in the embodiment of the invention.

Fig. 11 is a schematic structural view of the upper and lower carrier rods for adjusting the position of the iron mold hydraulic lock box device for the sand lined iron mold casting roller way according to the embodiment of the present invention when the device is used for iron molds of different heights.

Fig. 12 is a schematic structural view of the opening of the hydraulic cylinder in the adjustment of the upper ejector rod and the lower ejector rod when the iron mold hydraulic box locking device for the sand lined iron mold casting roller way is used for iron molds with different heights in the embodiment of the invention.

Fig. 13 is a schematic structural diagram of the upper and lower push rods adjusted in position when the hydraulic box locking device for the sand-lined metal mold casting roller way according to the embodiment of the invention is used for metal molds of different heights.

Fig. 14 is a schematic structural diagram of a roller way box locking position without an iron mold in the operation of the iron mold hydraulic box locking device for the sand lined iron mold casting roller way according to the embodiment of the invention.

Fig. 15 is a schematic structural diagram of the roller way box locking position moving into the iron mold in the operation of the iron mold hydraulic box locking device for the sand lined casting roller way of the iron mold according to the embodiment of the invention.

Fig. 16 is a schematic structural diagram of the locking position of the iron mold of the roller bed in the operation of the hydraulic box locking device for the sand lined casting roller bed of the iron mold according to the embodiment of the invention.

Fig. 17 is a schematic structural diagram of a roller way box locking position box locking release in the operation of the iron-type hydraulic box locking device for the sand-lined iron casting roller way according to the embodiment of the invention.

Fig. 18 is a schematic structural diagram of the mold removal of the roll way lock box position in the operation of the iron mold hydraulic lock box device for the sand lined iron mold casting roll way according to the embodiment of the present invention.

In fig. 1-2: 1-1 part of upper iron mold, 1-2 parts of lower iron mold, 1-3 parts of locking screw, 1-4 parts of iron-type locking box buckle and 1-5 parts of locking box buckle body.

In fig. 3-18: the device comprises a locking hydraulic cylinder 1, a piston rod 2, an upper pressing connecting rod 3, an upper pressing ejector rod 4, a lower pressing connecting rod 5, a lower pressing ejector rod 6, an upper pressing connecting rod seat 7, a lower pressing connecting rod seat 8, a hydraulic cylinder splash guard 9, a connecting pin 10, an upper limiting block 11, a lower limiting block 12, a locking nut 13 and a roller bed frame 14.

Detailed Description

The present invention will be described in further detail below by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not to be construed as limiting the present invention.

Examples are given.

Referring to fig. 3 to 18, the iron mold box locking device for the sand-lined iron mold casting roller way of the embodiment includes a locking hydraulic cylinder 1, a piston rod 2, an upper pressing connecting rod 3, an upper pressing ejector rod 4, a lower pressing connecting rod 5, a lower pressing ejector rod 6, an upper pressing connecting rod seat 7, a lower pressing connecting rod seat 8, an upper limiting block 11 and a lower limiting block 12 for respectively controlling the opening and closing distances of the upper pressing connecting rod 3 and the lower pressing connecting rod 5 at the same time, the locking hydraulic cylinder 1 is located outside a roller way frame 14, the piston rod 2 is arranged at the front end of the locking hydraulic cylinder 1, and the hinge joint of the piston rod 2 of the locking hydraulic cylinder 1 is connected with one end of the upper pressing connecting rod 3; the hinge hole in the middle of the upper pressing connecting rod 3 is connected with the hinge head of the upper pressing connecting rod seat 7; the upper pressing ejector rod 4 is arranged at the other end of the upper pressing connecting rod 3; a hinged joint at the bottom of the locking hydraulic cylinder 1 is connected with one end of a lower pressing connecting rod 5; the hinged hole in the middle of the lower pressing connecting rod 5 is connected with the hinged joint of the lower pressing connecting rod seat 8; the pressing mandril 6 is arranged at the other end of the pressing connecting rod 5; the outer sides of the upper pressing connecting rod seat 7 and the lower pressing connecting rod seat 8 are respectively provided with an upper limiting block 11 and a lower limiting block 12; the central line of the upper ejector rod 4 and the central line of the lower ejector rod 6 are on the same straight line and are vertical to the upper and lower planes of the iron mold.

In the embodiment, a hinged joint of a piston rod 2 of the locking hydraulic cylinder 1 is hinged with one end of an upper pressing connecting rod 3 through a connecting pin 10; the middle hinge hole of the upper pressing connecting rod 3 is hinged with the hinge joint of the upper pressing connecting rod seat 7 through a connecting pin 10.

In the embodiment, a hinged joint at the bottom of the locking hydraulic cylinder 1 is hinged with one end of a lower pressure connecting rod 5 through a connecting pin 10; the middle hinge hole of the lower pressing connecting rod 5 is hinged with the hinge joint of the lower pressing connecting rod seat 8 through a connecting pin 10.

In the embodiment, the upper ejector rod 4 is screwed at the other end of the upper ejector connecting rod 3 through the upper threads of the rod, and the extending distance of the head of the upper ejector rod 4 is locked through the locking nut 13; through rotating the upper pressing ejector rod, the distance of the ejector rod head extending out of the bottom plane of the upper pressing connecting rod can be adjusted, so that the iron molds with different heights can be locked in a box closing mode.

The push-down mandril 6 is screwed at the other end of the locking push-down connecting rod 5 through the upper threads of the mandril; the extending distance of the head of the lower push rod 6 is locked by a locking nut 13; through the rotatory ejector pin that pushes down, adjustable this ejector pin head stretches out the planar distance in push down connecting rod bottom to be used for the locking of mould assembling of not co-altitude swage.

In the embodiment, the hydraulic cylinder splash guard 9 is fixed on the piston rod 2 and ascends and descends along with the ascending and descending of the piston rod 2; the hydraulic cylinder sealing piece is prevented from being scratched when the piston rod is lifted and the hydraulic cylinder is damaged due to the fact that molten iron splashes to the rod body of the piston rod entering and exiting the oil cavity of the hydraulic cylinder when the molten iron is poured.

In this embodiment, the distance from the center of the middle hinge hole of the upper pressing connecting rod 3 to the center of the upper connecting hinge hole of the upper locking hydraulic cylinder 1 is equal to the distance from the center of the middle hinge hole of the lower pressing connecting rod 5 to the center of the lower connecting hinge hole of the lower locking hydraulic cylinder 1.

The hydraulic box locking device for the iron mold is mainly used for a mechanized and automatic sand-lined iron mold casting production line. After the upper and lower iron molds after the mould assembling enter the casting roller way position of the production line, the upper and lower iron molds can be tightly locked by starting the iron mold box locking device installed on the casting roller way, then the molten iron can be poured and the molten iron can be solidified and cooled, after the molten iron is solidified and cooled, the locking mechanism of the device is opened, the roller way is started to run, the upper and lower iron molds are sent out of the casting roller way, and the next production process is carried out. Referring to fig. 3-4, the locking power source of the iron mold after the locking of the box assembly in this embodiment is that the locking hydraulic cylinder 1 drives the locking mechanism to lock the upper and lower iron molds. The iron mold locking device is fixedly arranged on a casting roller way through an upper pressing connecting rod seat 7 and a lower pressing connecting rod seat 8 which are fixedly arranged on the casting roller way; the locking hydraulic cylinder 1 is positioned outside the roller way; the hinged joint of a piston rod 2 of the locking hydraulic cylinder 1 is hinged with one end of an upper pressing connecting rod 3 through a connecting pin 10; the hinge hole in the middle of the upper pressing connecting rod 3 is hinged with the hinge joint of the upper pressing connecting rod seat 7 through a connecting pin 10; go up and press ejector pin 4 through its pole on the screw thread revolve on last another of pressing connecting rod 3, through rotatory top bar 4 that presses, adjustable this ejector pin head stretches out the planar distance in 3 bottoms of top bar 3 to be used for the mould assembling locking of different high iron types, then die with the distance lock of stretching out of top bar head with lock nut 13. The hinged joint at the bottom of the locking hydraulic cylinder 1 is hinged with one end of the lower pressing connecting rod 5 through a connecting pin 10; the hinged hole in the middle of the lower pressing connecting rod 5 is hinged with the hinged joint of the lower pressing connecting rod seat 8 through a connecting pin 10; the lower push rod 6 is screwed on the other end of the lower push connecting rod 5 through the upper thread of the rod; through rotatory ejector pin 6 that pushes down, the planar distance in 5 bottoms of adjustable this ejector pin head extension push down connecting rod to be used for the mould assembling locking of not co-altitude swage, then die with the distance lock that the 6 heads of locking push down ejector pin 13 will be locked. The upper limiting block 11 is fixedly installed on one side of the upper pressing connecting rod seat 7, and the lower limiting block 12 is fixedly installed on one side of the lower pressing connecting rod seat 8 and used for controlling the distance of the upper pressing connecting rod 3 and the lower pressing connecting rod 5 which are opened, closed and opened simultaneously. The hydraulic cylinder splash guard 9 is fixedly arranged on the piston rod 2 and ascends and descends along with the ascending and descending of the piston rod 2, so that the molten iron is prevented from splashing to a piston rod body of an oil cavity of the hydraulic cylinder in and out when the molten iron is poured, a sealing piece of the hydraulic cylinder is scratched when the piston rod ascends and descends, and the locking hydraulic cylinder 1 is damaged.

See fig. 3-4: the distance R between the center of the middle hinge hole of the upper pressing connecting rod 3 and the center of the upper connecting hinge hole of the locking hydraulic cylinder 1 is equal to the distance R between the center of the middle hinge hole of the lower pressing connecting rod 5 and the center of the lower connecting hinge hole of the hydraulic cylinder, so that the locking hydraulic cylinder 1 is always kept in a horizontal vertical state when the locking mechanism performs locking action or loosens the locking action, and the stress of the locking hydraulic cylinder 1 is always in a balanced state. In order to ensure that the upper plane and the lower plane of the iron mold are uniformly stressed when the iron mold is locked, the central line of the upper ejector rod 4 and the central line of the lower ejector rod 6 are kept on the same straight line and are perpendicular to the upper plane and the lower plane of the iron mold. For iron molds with different heights, the upper pressing ejector rod 4 and the lower pressing ejector rod 6 can be adjusted through rotation, when the locking device of the application is used for carrying out upper and lower iron mold box closing locking, the upper planes of the upper pressing connecting rod 3 and the lower pressing connecting rod 5 are parallel to the plane of the iron mold, and then the locking nuts 13 on the two connecting rods are tightly screwed and locked, when the locking device of the application is used for carrying out locking operation, the piston rod 2 of the locking hydraulic cylinder 1 is always stressed to be vertical to the piston rod 2, and torsion is not applied; when the upper pressing connecting rod 3 and the lower pressing connecting rod 5 are used for locking, the expansion force generated during iron mold pouring is consistent with the central lines of the upper pressing connecting rod 3 and the lower pressing connecting rod 5, so that the two pressing rods are guaranteed to be only stressed by positive pressure and not stressed by bending force all the time during locking operation, the service life of the device is greatly prolonged, and the manufacturing cost and the operation energy consumption of the locking device are reduced. Referring to fig. 5-8, schematic diagrams of the mold iron locking device of the present application for mold iron mold assembling and locking operation of mold irons with different heights are shown by adjusting the distances between the upper ejector rod 4 and the lower ejector rod 6 and the mold iron plane through rotation according to the principle of adjusting the upper ejector rod 4 and the lower ejector rod 6.

See fig. 3-4: an upper limit block 11 and a lower limit block 12 are fixedly arranged on the outer sides of the upper pressing connecting rod seat 7 and the lower pressing connecting rod seat 8 respectively. The two limiting blocks have the effects that when the locking hydraulic cylinder 1 finishes the contraction action (namely, when the locking device is completely opened), the upper pressing connecting rod 3 and the lower pressing connecting rod 5 are completely consistent in opening angle, namely, when the locking device is completely loosened, because the distance R between the center of the middle hinged hole of the upper pressing connecting rod 3 and the center of the middle hinged hole of the upper connecting hinged hole of the upper pressing connecting rod 3 and the center of the upper connecting hinged hole of the locking hydraulic cylinder 1 is equal to the distance R between the center of the middle hinged hole of the lower pressing connecting rod 5 and the center of the lower connecting hinged hole of the locking hydraulic cylinder 1, when the locking hydraulic cylinder 1 is completely loosened, the locking hydraulic cylinder 1 is kept in a state vertical to the horizontal direction, namely: the opening angles of the upper pressing connecting rod 3 and the lower pressing connecting rod 5 are completely consistent, the locking top heads of the upper pressing top rod 4 and the lower pressing top rod 6 are all separated from the plane for locking the iron mold, and the iron mold which is used for loosening the locking device is ensured to move out of the iron mold locking station from the plane, so that the locking top rod can not rub against the locking top rod head of the device, and the device is damaged.

This application is to the locking of upper and lower swage, adopts locking device locking to close the upper and lower planar mode of upper and lower swage behind the case and goes on. On pouring roller way section, on every swage locking station, in the both sides of roller way pouring, according to the length of swage, the locking requirement of swage, 1-3 swage locking device of this application of fixed mounting for mould assembling locking when the swage is poured, promptly: when molten iron is poured at each pair of upper and lower iron mold pouring stations, 2-6 sets of iron mold locking devices (1-3 sets of iron mold locking devices are fixedly arranged on a roller way at each side of each pair of iron mold pouring stations) are required to be arranged for locking the upper and lower iron molds in the pouring process.

When the hydraulic box locking device is used for locking iron molds with different heights, the locking heights of the upper ejector rod and the lower ejector rod of the locking device need to be adjusted in the following ways (as shown in the attached figures 9-13): the locking hydraulic cylinder 1 is opened, and when the upper pressing connecting rod 3 and the lower pressing connecting rod 5 which are arranged up and down are opened to the left side of the upper limiting block 11 and the lower limiting block (12) (namely marked 1 in the figure), the locking hydraulic cylinder 1 does not act any more and reaches the fully opening and closing position; sending the iron mold into a locking station, and respectively rotating the top rod heads arranged up and down to a certain distance, so that the upper ejector pressing rod 4 and the lower ejector pressing rod 6 can not touch the upper plane and the lower plane of the iron mold even if the locking hydraulic cylinder 1 is closed and locked, and the iron mold locking function can not be realized; closing the locking hydraulic cylinder 1, and when the upper pressing connecting rod 3 and the lower pressing connecting rod 5 are closed and respectively touch the right sides (namely the mark 2 in the figure) of the upper limiting block 11 and the lower limiting block 12, the locking hydraulic cylinder 1 does not act any more and reaches a completely closed locking position, and at the moment, neither the upper jacking rod head nor the lower jacking rod head touches an iron-type locking part needing to be locked; respectively rotating the upper pressing ejector rod 4 and the lower pressing ejector rod 6 to enable the upper pressing ejector rod 4 and the lower pressing ejector rod 6 to respectively touch an upper plane and a lower plane of the iron mold to be locked; when the locking hydraulic cylinder 1 is opened, the upper and lower upper pressing connecting rods 3 and the lower pressing connecting rod 5 are opened until the locking hydraulic cylinder touches the left sides of the upper limiting block 11 and the lower limiting block 12 ((namely mark 1 in the figure), the locking hydraulic cylinder does not act any more and reaches a complete opening and closing position), the upper pressing ejector rod 4 is rotated respectively to enable the upper pressing ejector rod head to descend for 1-2 mm and the lower pressing ejector rod head to ascend for 1-2 mm, so that when the iron mold locking operation is carried out, the upper pressing ejector rod head and the lower pressing ejector rod head can lock the iron mold under the action of the locking hydraulic cylinder 1 because the distance between the upper pressing ejector rod head and the lower pressing ejector rod head is smaller than the height size of the iron mold after the iron mold is closed, and the locking nuts 13 on the upper pressing ejector rod 4 and the lower pressing ejector rod 6 are respectively screwed to finish the adjustment of the locking height of the required locking iron mold.

The operation of the iron mold box locking device for the sand lined iron mold casting roller way of the embodiment is as follows (see fig. 14-18): in the process of molten iron pouring, solidifying and cooling production of an iron mold sand-lined casting production line in which a pouring roller way is adopted to bear an iron mold, firstly, hydraulic oil is injected into a contraction cavity of a piston rod 2 of a locking hydraulic cylinder 1 of an iron mold locking device, so that the piston rod 2 of the locking hydraulic cylinder 1 of a box locking device fixedly arranged at two sides of the pouring roller way performs retraction action to drive an upper pressing connecting rod 3, a lower pressing connecting rod 5, an upper pressing ejector rod 4 and a lower pressing ejector rod 6 to be gradually opened, when the lower planes of the upper pressing connecting rod 3 and the lower pressing connecting rod 5 touch the limiting planes of an upper limiting block 11 and a lower limiting block 12, the maximum opening positions of the upper pressing connecting rod 3, the lower pressing connecting rod 5, the upper pressing ejector rod 4 and the lower pressing ejector rod 6 are reached, the distance between the upper ejector rod head and the lower ejector rod head on the locking device is larger than the height size of the upper iron mold and the lower ejector rod head is lower than the lower plane of the lower iron mold after box closing, the upper ejector rod head is higher than the upper plane of the upper iron mold; then conveying the upper and lower iron molds after being combined into a casting roller way in sequence, and arranging the upper and lower iron molds on each casting station of the casting roller way one by one; then, hydraulic oil is injected into a piston rod 2 extending cavity of a locking hydraulic cylinder 1 of the iron-type locking device to drive an upper ejector pressing rod 4 to descend or a lower ejector pressing rod 6 to ascend, when the upper ejector pressing rod head descends to an upper iron-type plane or the lower ejector pressing rod head ascends to a lower iron-type plane, the upper ejector pressing rod 4 or the lower ejector pressing rod 6 does not move any more, and the upper iron type and the lower iron type are tightly locked together by the ejector heads of the upper ejector pressing rod 4 and the lower ejector pressing rod 6; each pair of iron molds in the locking state is kept in an immovable state on each locking station on the casting roller way; then pouring molten iron into an iron mold casting, wherein in the process of pouring molten iron and subsequent solidification of the molten iron, a piston rod 2 of a locking hydraulic cylinder 1 extends out of a cylinder cavity to always keep oil pressure, so that an iron mold locking device continuously keeps locking action on an upper iron mold and a lower iron mold; after the molten iron injected into the iron mold casting is solidified, hydraulic oil is injected into a contraction cavity of a piston rod 2 of a locking hydraulic cylinder 1 of the iron mold hydraulic locking device on each casting station, the piston rod 2 of the hydraulic locking device retracts to drive an upper pressing connecting rod 3, a lower pressing connecting rod 5, an upper pressing ejector rod 4 and a lower pressing ejector rod 6 to be gradually opened, the upper pressing ejector rod head and the lower pressing ejector rod head are gradually separated from the upper plane and the lower plane of the iron mold, when the upper pressing connecting rod 3 and the lower pressing connecting rod 5 touch an upper limiting block 11 and a lower limiting block 12, the upper pressing connecting rod 3, the lower pressing connecting rod 5, the upper pressing ejector rod 4 and the lower pressing ejector rod 6 are opened to the maximum position, the upper pressing ejector rod head and the lower pressing ejector rod head are completely separated from the upper plane and the lower plane of the iron mold, and the iron mold locking device is completely loosened and does not have a locking effect on the upper iron mold and the lower iron mold; and then the iron molds on the casting station can be sequentially moved out of the casting roller way one by one and enter the next production procedure, thereby completing the production processes of casting, solidifying and cooling molten iron in one period.

The working principle of the iron mold hydraulic box locking device for the iron mold sand-lined casting roller way in the embodiment is as follows: the casting mold for sand lined metal mold casting production is generally formed by combining an upper metal mold and a lower metal mold after sand lined molding. In the casting and subsequent molten iron cooling and solidification processes of the casting mold, because the box lifting force generated on the upper iron mold by the static pressure of molten iron casting, the graphitization expansion force generated in the molten iron solidification process of ductile iron and gray iron and the like is far greater than the weight of the upper iron mold, a gap is generated between the parting surfaces of the upper iron mold and the lower iron mold in the molten iron casting and subsequent solidification processes, and molten iron leaks out from the gap to cause waste products. Therefore, a box locking device (as shown in fig. 1-2) is required to tightly lock the upper and lower iron molds together. The common locking mode of the upper iron mold and the lower iron mold is to place the box locking device on the hanging shafts of the upper iron mold and the lower iron mold or the running edges of the upper iron mold and the lower iron mold and then to lock the upper iron mold and the lower iron mold by rotating the screw rod on the locking device. However, the iron mold box locking device used in fig. 1-2 generally adopts manual box locking, which is labor-intensive and not beneficial to realizing mechanization and automation of sand-lined iron mold casting production. The utility model provides a mode of swage lock case is different with foretell swage lock case's mode, is a brand-new swage lock case device that is used for on the sand lined metal mould casting pouring roll table, adopts the mode of hydraulic pressure locking. The working structure principle of the application is as follows: after the upper and lower iron molds after being combined into the casting section roller way station (namely the iron mold box locking station) are in place, the locking hydraulic cylinder 1 of the iron mold hydraulic box locking device is arranged on the casting roller way, the piston rod 2 extends out to drive the upper and lower locking link mechanisms, and the upper and lower locking working ejector rod pressure heads are contacted with the upper and lower planes of the upper and lower iron molds to tightly lock the upper and lower iron molds together. Because of the hydraulic cylinder effort of this application device is greater than the static pressure, the dynamic pressure that the molten iron pouring produced far away and the graphitization expanding force that produces among the molten iron solidification process to just guaranteed that the molten iron can not leak out from the die joint department of upper and lower swage in pouring, solidification cooling process, played the locking function to upper and lower swage.

The locking device can automatically lock the upper and lower iron molds on the pouring roller way, and after the pouring and solidification of molten iron are completed, the locking operation on the upper and lower iron molds is released, so that the locking operation of the upper and lower iron molds by manually combining machinery is omitted, and the operation requirement of a mechanized and automatic iron mold sand-lined casting production line is met.

And will be apparent to those skilled in the art from the foregoing description.

In addition, it should be noted that the specific embodiments described in the present specification may be different in the components, the shapes of the components, the names of the components, and the like, and the above description is only an illustration of the structure of the present invention. Equivalent or simple changes in the structure, characteristics and principles of the invention are included in the protection scope of the patent. Various modifications, additions and substitutions for the specific embodiments described may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.

Claims

1. The utility model provides a swage lock case device for sand lined metal mold casting pouring roller way, includes locking pneumatic cylinder (1) and piston rod (2), the front end of locking pneumatic cylinder (1) is provided with piston rod (2), its characterized in that: the locking device is characterized by further comprising an upper pressing connecting rod (3), an upper pressing ejector rod (4), a lower pressing connecting rod (5), a lower pressing ejector rod (6), an upper pressing connecting rod seat (7), a lower pressing connecting rod seat (8), an upper limiting block (11) and a lower limiting block (12), wherein the upper limiting block and the lower limiting block are used for respectively controlling the opening and closing distances of the upper pressing connecting rod (3) and the lower pressing connecting rod (5) at the same time, and the hinged joint of a piston rod (2) of the locking hydraulic cylinder (1) is connected with one end of the upper pressing connecting rod (3); the middle hinge hole of the upper pressure connecting rod (3) is connected with the hinge joint of the upper pressure connecting rod seat (7); the upper pressing ejector rod (4) is arranged at the other end of the upper pressing connecting rod (3); a hinged joint at the bottom of the locking hydraulic cylinder (1) is connected with one end of a lower pressing connecting rod (5); the hinge hole in the middle of the lower pressing connecting rod (5) is connected with the hinge joint of the lower pressing connecting rod seat (8); the pressing mandril (6) is arranged at the other end of the pressing connecting rod (5); the outer sides of the upper pressing connecting rod seat (7) and the lower pressing connecting rod seat (8) are respectively provided with an upper limiting block (11) and a lower limiting block (12); the central line of the upper push rod (4) and the central line of the lower push rod (6) are on the same straight line and are vertical to the upper and lower planes of the iron mold.

2. The iron mold lock box device for the sand lined iron mold casting pouring roller way according to claim 1, characterized in that: the locking hydraulic cylinder is characterized by further comprising a connecting pin (10), and a hinged joint of a piston rod (2) of the locking hydraulic cylinder (1) is hinged to one end of the upper pressure connecting rod (3) through the connecting pin (10); the middle hinge hole of the upper pressure connecting rod (3) is hinged with the hinge joint of the upper pressure connecting rod seat (7) through a connecting pin (10).

3. The iron mold lock box device for the sand lined iron mold casting pouring roller way according to claim 2, characterized in that: the bottom hinged joint of the locking hydraulic cylinder (1) is hinged with one end of the lower pressing connecting rod (5) through a connecting pin (10); the hinge hole in the middle of the lower pressing connecting rod (5) is hinged with the hinge joint of the lower pressing connecting rod seat (8) through a connecting pin (10).

4. The iron mold lock box device for the sand lined iron mold casting pouring roller way according to claim 1, characterized in that: the device is characterized by further comprising a locking nut (13), the upper pressure ejector rod (4) is screwed to the other end of the upper pressure connecting rod (3) through the upper rod thread, and the extending distance of the head of the upper pressure ejector rod (4) is locked through the locking nut (13).

5. The iron mold lock box device for the sand lined iron mold casting pouring roller way according to claim 4, wherein: the downward-pressing ejector rod (6) is screwed at the other end of the locking downward-pressing connecting rod (5) through the upper threads of the rod; the extending distance of the head of the push rod (6) is locked by a locking nut (13).

6. The iron mold lock box device for the sand lined iron mold casting pouring roller way according to claim 1, characterized in that: still include pneumatic cylinder splashproof cover (9), pneumatic cylinder splashproof cover (9) are fixed on piston rod (2), and go up and down along with the lift of piston rod (2).

7. The iron mold lock box device for the sand lined iron mold casting pouring roller way according to claim 1, characterized in that: the distance between the center of the middle hinge hole of the upper pressure connecting rod (3) and the center of the upper connecting hinge hole of the locking hydraulic cylinder (1) is equal to the distance between the center of the middle hinge hole of the lower pressure connecting rod (5) and the center of the lower connecting hinge hole of the locking hydraulic cylinder (1).

8. A method for iron mold box locking device of sand lined iron mold casting pouring roller way, which adopts the iron mold box locking device of any one of claims 1-7, and is characterized in that: in the process of molten iron pouring, solidifying and cooling production of an iron mold sand-lined casting production line in which a pouring roller way is adopted to bear an iron mold, firstly, hydraulic oil is injected into a contraction cavity of a piston rod (2) of a locking hydraulic cylinder (1) of an iron mold locking device to enable the piston rod (2) of the locking hydraulic cylinder (1) of a box locking device fixedly arranged at two sides of the pouring roller way to do retraction motion to drive an upper pressing connecting rod (3), a lower pressing connecting rod (5), an upper pressing ejector rod (4) and a lower pressing ejector rod (6) to be gradually opened, when the lower planes of the upper pressing connecting rod (3) and the lower pressing connecting rod (5) touch the limiting planes of an upper limiting block (11) and a lower limiting block (12), the maximum opening positions of the upper pressing connecting rod (3), the lower pressing connecting rod (5), the upper pressing ejector rod (4) and the lower pressing ejector rod (6) are reached, so that the distance between the upper ejector rod head and the lower ejector rod head on the locking device is larger than the height size of an upper iron mold and a lower iron mold after the box is closed, meanwhile, the lower ejector rod head is lower than the lower plane of the lower iron mold, and the upper ejector rod head is higher than the upper plane of the upper iron mold; then conveying the upper and lower iron molds after being combined into a casting roller way in sequence, and arranging the upper and lower iron molds on each casting station of the casting roller way one by one; then, hydraulic oil is injected into a piston rod (2) extending cavity of a locking hydraulic cylinder (1) of the iron-type locking device to drive an upper pressing ejector rod (4) to descend or a lower pressing ejector rod (6) to ascend, when the head of the upper pressing ejector rod (4) descends to the upper plane of the iron type or the head of the lower pressing ejector rod (6) ascends to the lower plane of the iron type, the upper pressing ejector rod (4) or the lower pressing ejector rod (6) does not move any more, and the upper iron type and the lower iron type are tightly locked together by the ejector heads of the upper pressing ejector rod (4) and the lower pressing ejector rod (6); each pair of iron molds in the locking state is kept in an immovable state on each locking station on the casting roller way; then pouring molten iron into an iron mold casting, wherein in the process of pouring molten iron and subsequent solidification of the molten iron, a piston rod (2) of a locking hydraulic cylinder (1) extends out of a cylinder cavity to always keep oil pressure, so that an iron mold locking device continuously keeps the locking effect on an upper iron mold and a lower iron mold; after the molten iron injected into the iron mold casting is solidified, hydraulic oil is injected into a contraction cavity of a piston rod (2) of a locking hydraulic cylinder (1) of the iron mold hydraulic locking device on each casting station, the piston rod (2) of the hydraulic locking device retracts to drive an upper pressing connecting rod (3), a lower pressing connecting rod (5), an upper pressing ejector rod (4) and a lower pressing ejector rod (6) to be gradually opened, the head of the upper pressing ejector rod (4) and the head of the lower pressing ejector rod (6) are gradually separated from the upper plane and the lower plane of the iron mold, when the upper pressing connecting rod (3) and the lower pressing connecting rod (5) touch an upper limiting block (11) and a lower limiting block (12), the upper pressing connecting rod (3), the lower pressing connecting rod (5), the upper pressing ejector rod (4) and the lower pressing ejector rod (6) are opened to the maximum positions, the head of the upper pressing ejector rod (4) and the head of the lower pressing ejector rod (6) are completely separated from the upper plane and the lower plane of the iron mold, and the iron mold locking device is completely loosened, the locking function on the upper iron mold and the lower iron mold is not performed any more; and then the iron molds on the casting station can be sequentially moved out of the casting roller way one by one and enter the next production procedure, thereby completing the production processes of casting, solidifying and cooling molten iron in one period.