CN113976835A - Rotary core setting clamp - Google Patents
Rotary core setting clamp Download PDFInfo
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- CN113976835A CN113976835A CN202111596763.3A CN202111596763A CN113976835A CN 113976835 A CN113976835 A CN 113976835A CN 202111596763 A CN202111596763 A CN 202111596763A CN 113976835 A CN113976835 A CN 113976835A
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- 230000007246 mechanism Effects 0.000 claims abstract description 54
- 238000000034 method Methods 0.000 claims abstract description 28
- 230000008569 process Effects 0.000 claims abstract description 21
- 239000000758 substrate Substances 0.000 claims abstract description 14
- 230000007306 turnover Effects 0.000 claims description 16
- 230000005484 gravity Effects 0.000 claims description 12
- 230000005540 biological transmission Effects 0.000 claims description 11
- 230000000712 assembly Effects 0.000 claims description 10
- 238000000429 assembly Methods 0.000 claims description 10
- 238000001125 extrusion Methods 0.000 claims description 2
- 230000001360 synchronised effect Effects 0.000 claims 1
- 238000005266 casting Methods 0.000 abstract description 12
- 230000003068 static effect Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000003825 pressing Methods 0.000 description 12
- 238000010586 diagram Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 240000004282 Grewia occidentalis Species 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000007528 sand casting Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
- B22C9/108—Installation of cores
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Abstract
The application discloses a rotary core setting clamp which comprises a clamp frame, wherein a base plate is detachably arranged at the bottom of the clamp frame, and the base plate is used for positively placing a sand core group formed by a plurality of sand cores in order; the side part of the clamp frame is provided with a first telescopic device, and the sand core group is suitable for being separated from the substrate under the driving of the first telescopic device; the first telescopic device is also suitable for driving the sand core group placed reversely to lower the core through downward moving; and a balance mechanism is arranged on the clamp frame and is suitable for balancing the sand core group in the process of overturning the sand core group. The beneficial effect of this application: traditional core mode down of comparing, each psammitolite homogeneous phase relative remain stable static in this application in core in-process core group down to can effectual improvement the core quality down of core group is in order to guarantee the casting precision of foundry goods.
Description
Technical Field
The application relates to the field of die casting, in particular to a core setting clamp.
Background
A core setting clamp is required on a sand casting automation production line of large complex castings, for example, an automatic core setting lifting clamp in casting production of cast iron blanks of engine cylinder bodies is used for clamping sand cores to move the sand cores.
When the V-shaped engine cylinder body is cast, the sand core is basically placed in the mold box in a mode direction that the sand core of the piston cylinder part is cast downwards, and the existing core setting mode of the sand core of the V-shaped engine cylinder body is basically that a plurality of sand cores are sequentially placed in the mold box one by one. This results in poor dimensional accuracy of the cast product due to uneven intervals between the sand cores and uneven connection between the sand cores and the mold box after the sand cores are placed in the mold box. Therefore, a core setting clamp capable of improving the casting precision of the V-shaped engine cylinder block casting is urgently needed.
Disclosure of Invention
An object of this application is to provide a rotatory core anchor clamps down, can improve the casting precision to V type engine cylinder block foundry goods.
In order to achieve the purpose, the technical scheme adopted by the application is as follows: a rotary core setting clamp comprises a clamp frame, wherein a base plate is detachably arranged at the bottom of the clamp frame, and the base plate is used for positively placing a sand core group formed by a plurality of sand cores in order; a first telescopic device is installed on the side part of the clamp frame and used for separating the sand core group from the base plate so as to enable the sand core group to move upwards or downwards under the driving of the first telescopic device; a turnover mechanism is arranged above the inside of the clamp frame, the turnover mechanism is suitable for clamping the sand core group separated from the substrate and driving the sand core group to turn over for 180 degrees, so that the sand core group is placed in a reverse direction, and the sand core group placed in the reverse direction can move downwards to be discharged under the driving of the first telescopic device; and a balance mechanism is arranged on the clamp frame and is suitable for balancing the sand core group in the process of overturning the sand core group so as to ensure the overturning stability of the sand core group. Compared with the traditional core setting mode, the core setting method has the advantages that in the core setting process, all the sand cores in the sand core group are kept stable and static relatively, so that the core setting quality of the sand core group can be effectively improved, and the casting precision of the casting is guaranteed.
Preferably, the inside of the fixture frame is provided with a support frame, the support frame is connected with the positioning columns in the four-corner arrangement of the fixture frame in a sliding manner through the positioning holes in the four-corner arrangement, the turnover mechanism is installed on the support frame, the first telescopic device is connected with the top plate arranged on the side part of the support frame through the output end, so that the support frame is driven by the first telescopic device to move upwards or downwards along the positioning columns, and then the turnover mechanism is driven to clamp the sand core group to move upwards or downwards, so that the sand core group is separated from the base plate and is placed under the turnover of the sand core group.
Preferably, the turnover mechanism comprises a rotating part, a pair of clamping assemblies and a pair of second telescopic devices, the clamping assemblies are respectively slidably mounted at two ends of the support frame through the upper parts of the clamping assemblies, the second telescopic devices are fixedly mounted on the support frame, and the output ends of the second telescopic devices are respectively connected with the corresponding clamping assemblies, so that the clamping assemblies are driven by the second telescopic devices to be close to or far away from each other, and the sand core group can be clamped or loosened through the lower parts of the clamping assemblies; the rotating part install in the support frame, the rotating part with the centre gripping subassembly carries out the transmission and is connected to make through the rotating part is to the centre gripping subassembly centre gripping sand core group overturns.
Preferably, the clamping assembly comprises a connecting frame, a first rotating sleeve, a second rotating sleeve and a clamping plate, the first rotating sleeve and the second rotating sleeve are respectively rotatably mounted at the upper part and the lower part of the connecting frame, and the clamping plate is mounted at the end part of the second rotating sleeve; the connecting frame is in sliding connection with a sliding rail arranged on the supporting frame through a sliding block arranged on the side wall of the upper part of the connecting frame, and the second telescopic device is connected with the upper part of the connecting frame, so that the second telescopic device drives the clamping plates to be close to each other by driving the connecting frame, and the clamping blocks arranged on the clamping plates are clamped with clamping grooves arranged at two ends of the sand core group to clamp the sand core group; the first rotating sleeve is connected with the rotating part, the first rotating sleeve is connected with the second rotating sleeve through a transmission structure, so that the rotating part is driven to rotate the first rotating sleeve to drive the sand core group clamped by the clamping plate to overturn.
Preferably, the rotating part includes motor and drive shaft, motor fixed mounting in the one end of support frame, the drive shaft pass through the supporting seat rotate install in the support frame, the drive shaft is the integral key shaft, the one end of drive shaft with the output of motor is connected, first rotation cover through the centre set up the splined hole with the drive shaft is connected, first rotation cover is suitable for follow under the drive of second telescoping device the drive shaft slides, simultaneously first rotation cover is suitable for to be in rotate under the drive of drive shaft, thereby pass through drive structure drives the grip block is tight the sand core group rotates.
Preferably, the transmission structure comprises first chain wheels arranged on the first rotating sleeve and the second rotating sleeve, and the first chain wheels are connected through a first chain.
Preferably, the balance mechanisms are respectively arranged on one side of the arrangement direction of the sand core groups, and the balance mechanisms are suitable for generating torque opposite to the gravity torque direction of the sand core groups in the overturning process of the sand core groups so as to ensure that the sand core groups are kept stable in the overturning process.
Preferably, the balance mechanism comprises a pair of second chain wheels and second chains, the second chain wheels are rotatably mounted at two ends of one side of the support frame, and the two second chain wheels are connected through the second chains; one end of the second chain is fixed at the upper part of the clamp frame and is positioned above one of the second chain wheels, and the other end of the second chain is fixed at the lower part of the clamp frame and is positioned below the other second chain wheel, so that the connecting directions of the two second chain wheels and the second chain are opposite; and in the process that the balance mechanism moves upwards on the support frame, torque opposite to the gravity torque of the sand core group is generated by tensioning the second chain, so that the torque generated by the gravity of the sand core group in the overturning process is balanced.
Preferably, hold-down mechanism is still installed at the middle part of support frame, hold-down mechanism includes third telescoping device, uide bushing and clamp plate, the third telescoping device vertical install in the support frame, the uide bushing fixed set up in the support frame, the upper end of clamp plate with the output of third telescoping device is connected, just the clamp plate still through the guide bar of upper end setting with the uide bushing carries out sliding connection, so that the clamp plate is in the drive of third telescoping device is followed down the axial of uide bushing, and then can pass through briquetting that sets up on the clamp plate and after the upset the recess that sets up on the sand core group carries out extrusion fit, thereby the sand core group carries out the in-process of coring, realizes right the three-point clamping position of sand core group, in order to guarantee the precision and the stability of core under the sand core group.
Preferably, the side part of the clamp frame is connected with the side part of the support frame through a limiting structure; the limiting structure comprises a roller, a pair of first hinged plates and a pair of second hinged plates; the rotary roller is rotatably installed on the side portion of the clamp frame, the first hinged plate is respectively and fixedly connected with the two ends of the rotary roller through one end, the other end of the first hinged plate is hinged to one end of the second hinged plate, the other end of the second hinged plate is rotatably installed with a connecting portion, and the connecting portion is fixedly connected with the side portion of the support frame, so that when the first telescopic device drives the lower core of the sand core group to the limit position, the first hinged plate and the second hinged plate are located at the connecting dead point position, and safety of the support frame during lower core is guaranteed.
Compared with the prior art, the beneficial effect of this application lies in:
traditional core mode down compares, this application is at the in-process of last core, place on the base plate with the orderly range of a plurality of psammitolites earlier, earlier fix a position tight to the psammitolite group through tilting mechanism afterwards, when overturning under the drive of later tilting mechanism under the assurance psammitolite group, each psammitolite homoenergetic in the psammitolite group can be relative remain stable static, thereby after the core is down in follow-up completion, closely laminating keeps between the psammitolite in the psammitolite group, so that the core quality is high down of psammitolite group, and then in order to guarantee the casting precision of V type engine cylinder body foundry goods.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
FIG. 2 is a schematic structural diagram of a sand core set according to the present invention.
FIG. 3 is a schematic structural diagram of a substrate according to the present invention.
FIG. 4 is a schematic structural diagram of the turnover mechanism of the present invention.
Fig. 5 is a top view of the canting mechanism of the present invention.
Fig. 6 is a front view of the canting mechanism of the present invention.
FIG. 7 is a schematic view of the structure of the jig frame according to the present invention.
FIG. 8 is a schematic view of the turnover mechanism installed in the fixture frame according to the present invention.
Fig. 9 is a schematic view of the state of the sand core group in the present invention when it is not turned over.
Fig. 10 is a schematic diagram of a state of balancing by the balancing mechanism in the process of turning over the sand core group in the invention.
FIG. 11 is a schematic view of the core setting state of the sand core set after being turned over.
In the figure: the grinding core group 100, the clamping groove 110, the substrate 2, the mounting seat 21, the fixture frame 3, the first telescoping device 300, the positioning column 301, the supporting frame 31, the supporting seat 311, the top plate 312, the fixing plate 313, the positioning hole 314, the sliding rail 315, the turnover mechanism 4, the motor 41, the driving shaft 42, the second telescoping device 43, the pressing mechanism 44, the third telescoping device 441, the guide sleeve 442, the pressing plate 443, the pressing block 4430, the guide rod 4431, the clamping assembly 45, the connecting frame 451, the sliding block 4510, the first rotating sleeve 452, the second rotating sleeve 453, the clamping plate 454, the clamping block 4540, the first chain wheel 500, the first chain 600, the second chain wheel 710, the second chain 720, the rotating roller 81, the first hinged plate 82, the second hinged plate 83, the connecting part 84 and the mold box 900.
Detailed Description
The present application is further described below with reference to specific embodiments, and it should be noted that, without conflict, any combination between the embodiments or technical features described below may form a new embodiment.
In the description of the present application, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., it indicates that the orientation and positional relationship shown in the drawings are based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be construed as limiting the specific scope of protection of the present application.
It is noted that the terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.
In one preferred embodiment of the present application, as shown in fig. 1 to 11, a rotary core setting fixture comprises a fixture frame 3, a base plate 2 is detachably mounted on the bottom of the fixture frame 3, and the base plate 2 is used for positively placing a sand core group 100 composed of a plurality of sand cores in order. A first expansion device 300 is attached to a side portion of the jig frame 3, and the first expansion device 300 can move up the set of cores 100 placed in the forward direction to separate the set of cores from the substrate 2. The inside top of anchor clamps frame 3 is installed tilting mechanism 4, and tilting mechanism 4 can carry out the centre gripping through the both ends of psammitolite group 100 to psammitolite group 100 and press from both sides tightly to after psammitolite group 100 breaks away from with base plate 2, tilting mechanism 4 can drive the psammitolite group 100 upset 180 of centre gripping, so that psammitolite group 100 is in the state of reverse placing. The inverted set of cores 100 may then be moved downward by the first jack 300 until the inverted set of cores 100 is stably placed in the mold box 900 for core setting. Still install balance mechanism on the anchor clamps frame 3, balance mechanism can be balanced the psammitolite group 100 at the in-process that psammitolite group 100 overturned to guarantee the stability of psammitolite group 100 upset. Traditional core mode down of comparing, this application is in core in-process sand core group 100 each psammitolite homogeneous phase relative remain stable static down to can the effectual core quality of setting that improves sand core group 100, and then guarantee the casting precision of V type engine cylinder block foundry goods.
It will be appreciated that the location of the sand core set 100 for forming the piston cylinder in the V-block is oriented upward for the forward orientation of the sand core set 100 and vice versa for the reverse orientation. It is known in the art that during casting of a V-block, the core sand core set 100 needs to be placed in the mold box 900 in a reversed orientation. However, the position of the sand core group 100 for forming the piston cylinder is uneven, and if the sand core is directly placed in the mold box 900 in the reverse direction after being taken out, the accuracy error between the sand cores is large, and the quality of the cast product is not good. Therefore, in order to solve the above problems, the present application, after the sand cores are taken out, the sand cores are placed on the substrate 2 in the forward direction through the horizontal plane of the bottom of the sand cores, a plurality of required sand cores are arranged in order to form a complete sand core group 100, and then the substrate 2 is installed at the bottom of the fixture frame 3 together with the sand core group 100, so that the sand core group 100 is mechanically clamped by the turnover mechanism 4, and then the sand core group 100 is turned over for core setting, so as to ensure the combination precision of the sand core group 100 in the core setting process.
In this embodiment, as shown in fig. 3, an installation seat 21 is provided in the middle of the upper end of the substrate 2, the sand cores are installed on the installation seat 21 in a regular arrangement in the forward direction through the horizontal plane of the bottom, and the sand cores in the sand core group 100 can be kept stable by the installation seat 21 in the moving process of the substrate 2.
In this embodiment, after the core assembly 100 is separated from the substrate 2 under the driving of the first telescopic device 300, the substrate 2 may be disassembled during the period before the core assembly 100 is driven by the first telescopic device 300 to perform core setting, so that the mold box 900 may be installed at the bottom of the fixture frame 3 before the core assembly 100 is not set, thereby facilitating the direct core setting of the subsequent core assembly 100.
In one embodiment of the present application, as shown in fig. 4, 5, and 7 to 9, a support frame 31 is installed inside the fixture frame 3, and the support frame 31 is slidably connected to positioning posts 301 disposed at four corners of the fixture frame 3 through positioning holes 314 disposed at four corners. Tilting mechanism 4 is installed in support frame 31, and first telescoping device 300 is connected through the roof 312 that the output set up with the support frame 31 lateral part simultaneously to make support frame 31 move up or move down along the axial of reference column 301 under the drive of first telescoping device 300, through reciprocating of support frame 31, can drive tilting mechanism 4 and the tight psammitolite group 100 of clamp and move up or move down in step, thereby can realize that psammitolite group 100 that forward was placed breaks away from with base plate 2, and the psammitolite group 100 that reverse was placed after the upset carries out the core setting.
In this embodiment, the number of the first telescoping devices 300 is plural, and the specific number can be adjusted according to actual needs, for example, as shown in fig. 1 and fig. 7 to fig. 9, the number of the first telescoping devices 300 is four, and every two of the four first telescoping devices 300 are a group, two groups of the first telescoping devices 300 are respectively located at two sides of the supporting frame 31, and two first telescoping devices 300 of each group are respectively located at two ends of one side of the supporting frame 31, and each first telescoping device 300 is connected with the top plate 312 arranged on the supporting frame 31, so that the supporting frame 31 can be stably driven by the plurality of first telescoping devices 300, and the tilting mechanism 4 and the sand core group 100 connected with the supporting frame 31.
It can be understood that the first telescoping device 300 drives the sand core set 100 to move upwards only by a distance that the sand core set 100 does not interfere with the substrate 2 during the turning process. The specific values may be set based on the actual size of the core set 100.
In one embodiment of the present application, as shown in fig. 4 to 6 and fig. 9 and 11, the turnover mechanism 4 includes a rotating portion, a pair of clamping assemblies 45, and a pair of second telescopic devices 43. Wherein two centre gripping subassemblies 45 all through upper portion respectively slidable mounting in the both ends of support frame 31, second telescoping device 43 fixed mounting in support frame 31, two second telescoping device 43 are connected with corresponding centre gripping subassembly 45 respectively through the output to make centre gripping subassembly 45 be close to each other or keep away from under the drive of second telescoping device 43, and then can press from both sides tight or relax sand core group 100 through the lower part of centre gripping subassembly 45. The rotating part is mounted on the supporting frame 31, and is in transmission connection with the clamping assembly 45, so that the sand core group 100 clamped by the clamping assembly 45 can be turned over through the rotating part.
In this embodiment, as shown in fig. 4 to 6, the clamping assembly 45 includes a connecting frame 451, a first rotating sleeve 452, a second rotating sleeve 453, and a clamping plate 454. Wherein the first rotating sleeve 452 and the second rotating sleeve 453 are rotatably installed at the upper portion and the lower portion of the connecting frame 451, respectively, the clamping plate 454 is installed at the end portion of the second rotating sleeve 453, and the end surface of the clamping plate 454 is provided with the latch 4540. The upper side wall of the connecting frame 451 is fixedly provided with a sliding block 4510, so that the connecting frame 451 can be slidably connected with a sliding rail 315 arranged on the supporting frame 31 through the sliding block 4510, the output end of the second telescopic device 43 is connected with the upper part of the connecting frame 451, so that the second telescopic device 43 can drive the connecting frame 451 to slide along the sliding rail 315, and further the connecting frame 451 can synchronously drive the clamping plates 454 to approach or separate from each other. When the grip block 454 is close to each other, the grip block 454 can be clamped and clamped with the clamping groove 110 arranged at the end of the sand core group 100 through the fixture block 4540, and then in the process of overturning the sand core group 100, the sand core group 100 can be ensured to be kept stable in the overturning process through the matching of the fixture block 4540 and the clamping groove 110. First rotating sleeve 452 is connected with the rotating part, connects through transmission structure between first rotating sleeve 452 and the second rotating sleeve 453 to make the rotating part drive second rotating sleeve 453 through driving first rotating sleeve 452 and rotate, and then can drive in step and be turned over by the tight psammitolite group 100 of grip block 454 clamp.
In this embodiment, the number of the fixture blocks 4540 and the fixture grooves 110 may be plural, and the specific number may be adjusted according to actual needs, for example, as shown in fig. 2, 4, and 6, the number of the fixture grooves 110 provided at the end of the sand core group 100 is three, and further, the number of the fixture blocks 4540 provided on the clamping plate 454 is also three, and the three fixture blocks 4540 and the fixture grooves 110 are all in triangular distribution, so that after the fixture blocks 4540 and the fixture grooves 110 are correspondingly engaged, a stable connection structure may be formed between the sand core group 100 and the clamping plate 454 in the process of turning over the sand core group 100.
In this embodiment, as shown in fig. 4 to 6, the rotating portion includes a motor 41 and a driving shaft 42, the motor 41 is fixedly installed at one end of the supporting frame 31, and the driving shaft 42 is rotatably installed on the supporting frame 31 through a supporting seat 311. The driving shaft 42 is a spline shaft and the driving shaft 42 is connected with the output end of the motor 41 through one end, and the first rotary sleeve 452 is connected with the driving shaft 42 through a spline hole provided at the center, so that when the connecting frame 451 is driven by the second telescopic device 43 to clamp the sand core group 100 through the clamping plate 454, the first rotary sleeve 452 can slide axially along the driving shaft 42 along with the connecting frame 451. When the sand core group 100 needs to be turned over, the motor 41 drives the driving shaft 42 to rotate, so that the first rotating sleeve 452 is driven by the driving shaft 42 to rotate, and further the second rotating sleeve 453 and the sand core group 100 clamped by the clamping plate 454 can be driven by the transmission structure to synchronously rotate.
It is understood that there are various structures of the driving structure, for example, as shown in fig. 4 and 6, the driving structure includes the first sprocket 500 provided to the first rotating sleeve 452 and the second rotating sleeve 453, and the first sprocket 500 is connected thereto by the first chain 600. The transmission structure may further include pulleys provided to the first rotating sleeve 452 and the second rotating sleeve 453, which are connected by a belt. Of course, the transmission structure includes, but is not limited to, the above two structures.
As shown in fig. 10, the inversion process of the sand core pack 100 is subjected to a force analysis. The set of sand cores 100 may be viewed approximately as "Y" in the direction of alignment such that when the set of sand cores 100 is placed in a forward direction, the center of gravity of the set of sand cores 100 is located substantially at the centerline of the forward placement of the set of sand cores 100, which substantially coincides with the centerline of the attachment frame 451. When the core block 100 is turned over, the center of gravity of the core block 100 is offset from the center line of the connecting frame 451 by an offset distance L, so that the gravity G of the core block 100 may generate a gravitational moment of G · L during the turning over of the core block 100. The gravity moment of the sand core group 100 can generate unidirectional torque for the connecting frame 451 and the supporting frame 31, and the long-time use can cause the connecting frame 451 and the supporting frame 31 to generate unidirectional fatigue, so that the core setting precision of the sand core group 100 is reduced, and the quality of the formed V-shaped engine cylinder block casting of the sand core group 100 is further influenced.
In order to solve the above problem, in one embodiment of the present invention, a balance mechanism may be installed on one side of the arrangement direction of the sand core groups 100, and the balance mechanism is located in the reverse direction of the turning direction of the sand core groups 100, so that a torque opposite to the gravity torque direction of the sand core groups 100 can be generated by the balance mechanism, thereby ensuring that the sand core groups 100 are kept stable during the turning process.
In the present embodiment, as shown in fig. 6 and 8, the balancing mechanism includes a pair of second sprockets 710 and a second chain 720. The fixing plates 313 are fixed at two ends of each side of the supporting frame 31, the two second chain wheels 710 are correspondingly and rotatably mounted on the two fixing plates 313 on one side of the supporting frame 31, and the two second chain wheels 710 are connected through the second chain 720. The second chain 720 is in a shape of a strip, one end of the second chain 720 is fixed on the upper portion of the fixture frame 3 and is located above one of the second chain wheels 710, and the other end of the second chain 720 is fixed on the lower portion of the fixture frame 3 and is located below the other second chain wheel 710, so that the connection directions of the two second chain wheels 710 and the second chain 720 on the same side of the supporting frame 31 are opposite. In the process that the balance mechanism moves upwards on the support frame 31, the tension of the second chain 720 on the side of the support frame 31 generates a torque opposite to the direction of the gravity moment of the sand core group 100, and the gravity moment generated in the overturning process of the sand core group 100 can be balanced by the torque.
The specific working principle of the balancing mechanism is that, as shown in fig. 10, during the upward movement of the supporting frame 31, two second chain wheels 710 on one side of the supporting frame 31 are engaged by a second chain 720, one is in a downward tensioned state, and the other is in an upward relaxed state. Assuming that the tightening force is F, a torque M in a direction opposite to the gravitational moment of the core assembly 100 can be generated on one side of the support frame 31 by the tightening force F, and the gravitational moment generated by the core assembly 100 can be balanced by the torque M.
In one embodiment of the present application, as shown in fig. 4, 6 and 11, a pressing mechanism 44 is further installed in the middle of the supporting frame 31. The pressing mechanism 44 comprises a third telescopic device 441, a guide sleeve 442 and a pressing plate 443, the third telescopic device 441 is vertically installed on the support frame 31, the guide sleeve 442 is fixedly installed on the support frame 31, the upper end of the pressing plate 443 is connected with the output end of the third telescopic device 441, and the pressing plate 443 is further connected with the guide sleeve 442 in a sliding manner through a guide rod 4431 arranged at the upper end, so that the pressing plate 443 is driven by the third telescopic device 441 to move down along the axial direction of the guide sleeve 442, and then the pressing block 4430 arranged on the pressing plate 443 is in press fit with a groove arranged at the upward bottom of the turned sand core group 100, so that in the process of core setting of the sand core group 100, three-point clamping and positioning of the sand core group 100 is realized through the two clamping plates 454 and the pressing plate 443, and thus the accuracy and stability of core setting of the sand core group 100 are ensured.
In one preferred embodiment of the present application, as shown in fig. 7 to 9 and 11, the side portion of the clamp frame 3 and the side portion of the support frame 31 are connected by a limiting structure. The stopper structure includes a roller 81, a pair of first hinge plates 82, and a pair of second hinge plates 83. Wherein it rotates roller 81 and installs in the lateral part of anchor clamps frame 3, two first articulated sheets 82 correspond fixed connection with the both ends of rotating roller 81 respectively through one end, the other end of two first articulated sheets 82 all articulates with the one end of the second articulated sheet 83 that corresponds, the other end of second articulated sheet 83 all rotates installs connecting portion 84 to connecting portion 84 carries out fixed connection with the lateral part of support frame 31. When the first telescopic device 300 drives the sand core group 100 to move downwards to the limit position for core setting, the first hinged plate 82 and the second hinged plate 83 are in parallel connection dead point positions, and therefore the safety of the support frame 31 in core setting is guaranteed.
It is understood that, in the embodiment of the present application, the first expansion device 300, the second expansion device 43, and the third expansion device 441 are all in the prior art, and may be a pneumatic cylinder, a hydraulic cylinder, a screw rod driving device, or other devices with similar functions.
The foregoing has described the general principles, essential features, and advantages of the application. It will be understood by those skilled in the art that the present application is not limited to the embodiments described above, which are merely illustrative of the principles of the application, but that various changes and modifications may be made without departing from the spirit and scope of the application, and these changes and modifications are intended to be within the scope of the application as claimed. The scope of protection claimed by this application is defined by the following claims and their equivalents.
Claims (10)
1. A rotary coring fixture, comprising:
a clamp frame;
the sand core group consisting of a plurality of sand cores is placed on the substrate in the forward direction, and the substrate is detachably mounted at the bottom of the clamp frame;
the turnover mechanism is arranged above the inside of the clamp frame; the turnover mechanism is suitable for clamping and driving the sand core group to turn over for 180 degrees, so that the sand core group is reversely placed;
the first telescopic device is arranged on the side part of the clamp frame and is suitable for driving the sand core group placed in the forward direction to be separated from the base plate through upward moving or driving the sand core group placed in the reverse direction to be discharged through downward moving; and
the balance mechanism is suitable for balancing the sand core group when the turnover mechanism drives the sand core group to overturn.
2. The rotary coring fixture of claim 1, wherein: the utility model discloses a sand core group, including anchor clamps frame, tilting mechanism, first telescoping device, support frame, reference column, tilting mechanism, and then can drive tilting mechanism presss from both sides tightly sand core group shifts up or moves down, the internally mounted of anchor clamps frame has the support frame, the support frame pass through the locating hole of four corners setting with the reference column sliding connection of anchor clamps frame four corners setting, tilting mechanism install in the support frame, first telescoping device pass through the output with the support frame is connected, so that the support frame is in the drive of first telescoping device is followed the reference column shifts up or moves down, and then can drive tilting mechanism presss from both sides tightly sand core group shifts up or moves down.
3. The rotary core-setting fixture of claim 2, wherein the flipping mechanism comprises:
the two clamping components are respectively installed at the two ends of the supporting frame in a sliding mode through the upper portions of the two clamping components;
the second telescopic devices are fixedly arranged on the supporting frame, and the clamping assemblies are correspondingly connected with the second telescopic devices so that the clamping assemblies are driven by the second telescopic devices to be close to or far away from each other, and the sand core group can be clamped or loosened through the lower parts of the clamping assemblies; and
the rotating part, the rotating part install in the support frame, the rotating part with the centre gripping subassembly carries out the transmission and is connected, so that through the rotating part is right the centre gripping subassembly centre gripping sand core group overturns.
4. The rotary core-setting fixture of claim 3, wherein the clamping assembly comprises:
the connecting frame is connected with the supporting frame in a sliding mode through the upper portion of the connecting frame, and the connecting frame is connected with the second telescopic device;
the first rotating sleeve is rotatably arranged on the upper part of the connecting frame and is connected with the rotating part;
the second rotating sleeve is rotatably arranged at the lower part of the connecting frame, and the first rotating sleeve and the second rotating sleeve are connected through a transmission structure; and
the clamping plate is fixedly arranged at the end part of the second rotating sleeve;
when the second telescopic device drives the connecting frames to mutually approach, the connecting frames are suitable for driving the clamping plates to mutually approach, so that clamping can be carried out through clamping blocks arranged on the clamping plates and clamping grooves arranged at two ends of the sand core group;
when the rotating part drives the first rotating sleeve to rotate, the first rotating sleeve is suitable for driving the second rotating sleeve to drive the sand core group clamped by the clamping plate to overturn.
5. The rotary coring fixture of claim 4, wherein: the rotating part comprises a motor and a driving shaft, the motor is fixedly arranged at one end of the supporting frame, the driving shaft is rotatably arranged on the supporting frame, the driving shaft is a spline shaft and is connected with the output end of the motor through the end part, and the first rotating sleeve is connected with the driving shaft through a spline hole arranged in the center;
the first rotating sleeve is suitable for sliding along the driving shaft under the driving of the second telescopic device;
the first rotating sleeve is suitable for being driven by the driving shaft to rotate.
6. The rotary coring fixture of claim 4, wherein: the transmission structure comprises a first chain wheel arranged on the first rotating sleeve and the second rotating sleeve, and the first chain wheel is connected with the second rotating sleeve through a first chain.
7. The rotary core-setting fixture of any one of claims 2-6, wherein: the balance mechanism is arranged on one side of the arrangement direction of the sand core groups and is suitable for generating torque opposite to the gravity moment direction of the sand core groups in the overturning process of the sand core groups, so that the gravity moment generated in the overturning process of the sand core groups can be balanced.
8. The rotary coring fixture of claim 7, wherein: the balance mechanism comprises a pair of second chain wheels and second chains, the second chain wheels are correspondingly and rotatably arranged at two ends of one side of the support frame, and the two second chain wheels are connected through the second chains; one end of the second chain is fixed on the upper portion of the clamp frame and is located above one of the second chain wheels, and the other end of the second chain is fixed on the lower portion of the clamp frame and is located below the other second chain wheel, so that the connecting directions of the two second chain wheels on the same side of the support frame and the second chain are opposite.
9. The rotary coring fixture of claim 2, wherein: hold-down mechanism is still installed at the middle part of support frame, hold-down mechanism includes:
the third telescopic device is vertically arranged on the supporting frame;
the guide sleeve is fixedly arranged on the support frame; and
the clamp plate, the upper end of clamp plate with the output of third telescoping device is connected, just the clamp plate still through the guide bar that the upper end set up with the uide bushing carries out sliding connection, the lower extreme of clamp plate is provided with the briquetting, the briquetting be suitable for with after the upset the recess that sets up carries out extrusion fit on the sand core group, so that the clamp plate is in under the drive of third telescoping device with the sand core group carries out synchronous lapse, and then can the psammitolite group is lower the in-process of core is right the sand core group carries out the multiple spot and presss from both sides tightly.
10. The rotary coring fixture of claim 2, wherein: the side part of the clamp frame is connected with the side part of the support frame through a limiting structure; the limit structure comprises:
the rotating roller is rotatably arranged on the side part of the clamp frame;
the two first hinged plates are correspondingly and fixedly connected with the two ends of the rotating roller through one ends respectively; and
one end of the second hinged plate is hinged with the other end of the first hinged plate, connecting parts are rotatably arranged at the other ends of the second hinged plates, and the connecting parts are fixedly connected with the side parts of the supporting frame;
when the first telescopic device drives the sand core group to descend to the limit position, the first hinged plate and the second hinged plate are located at a connecting dead point position.
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| CN202111596763.3A CN113976835B (en) | 2021-12-24 | 2021-12-24 | Rotary core setting clamp |
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| CN202111596763.3A CN113976835B (en) | 2021-12-24 | 2021-12-24 | Rotary core setting clamp |
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Cited By (1)
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| CN114769512A (en) * | 2022-04-21 | 2022-07-22 | 重庆康辉机械制造有限公司 | Clamping device for casting sand core |
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|---|---|
| CN113976835B (en) | 2022-03-18 |
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Denomination of invention: A rotating lower core fixture Effective date of registration: 20231109 Granted publication date: 20220318 Pledgee: Bank of Ningbo branch of the Bank of Ningbo, Xiangshan branch Pledgor: XIANGSHAN TONGJIA MOULD MANUFACTURING CO.,LTD. Registration number: Y2023980064801 |
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