CN112298965B - Strip-shaped revolving body workpiece one-by-one automatic feeding device and feeding method - Google Patents

Abstract

The invention discloses a one-by-one automatic feeding device and a one-by-one automatic feeding method for strip-shaped revolving body workpieces. The strip-shaped revolving body workpieces are often stacked and transported together in a mess after being produced, and automatic feeding is difficult to realize during automatic use. The invention relates to a one-by-one automatic feeding device for strip-shaped rotary body workpieces, which comprises a vibrating disc conveying mechanism, a conveying circular pipe and a separating feeding mechanism which are arranged side by side. N material output ports of the vibration disc material conveying mechanism are arranged one by one through the vibration disc to continuously output workpieces. The one-by-one feeding mechanism is arranged on the feeding base and comprises a sliding frame, a feeding power element, a sliding plate and a feeding block. According to the automatic workpiece separating device, workpieces are automatically conveyed to the one-by-one feeding mechanism through the vibrating disc and the pipeline, and then the reciprocating sliding of the sliding plate and the matching of the feeding hole in the feeding block, the transition hole in the sliding plate and the discharging hole in the sliding frame are realized, so that the function of separating the workpieces sequentially arranged in the pipeline one by one onto the workpiece storage block is realized, and the subsequent automatic production is facilitated.

Description

A kind of automatic feeding device and feeding method for bar-shaped rotary workpiece one by one

technical field

The invention belongs to the technical field of automatic feeding equipment, and particularly relates to an automatic feeding device and a feeding method for strip-shaped rotary workpieces one by one.

Background technique

Bar-shaped rotary workpieces are the general term for straight-shaped rotary workpieces, including bolts, sleeves, bearing cylindrical rollers, etc. After production, bar-shaped rotary workpieces are often stacked and transported together in a disorderly manner, which is difficult to use in automation. To realize automatic feeding, it is often necessary to manually arrange it into a matrix, and then automatically feed it by an industrial robot, which is costly and inefficient.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an automatic feeding device and a feeding method for strip-shaped rotary workpieces one by one.

The invention relates to an automatic feeding device for strip-shaped rotary workpieces one by one, which comprises a vibrating plate feeding mechanism, a feeding circular tube and a separating feeding mechanism arranged side by side. The n material output ports of the vibrating disc conveying mechanism are arranged to continuously output workpieces one by one through the vibrating disc. The separation feeding mechanism includes a feeding base, a workpiece storage block and a feeding mechanism one by one. There are m total workpiece storage blocks, m≥2. The top of each workpiece storage block is provided with n material placement positions. The workpiece storage block can be moved under the drive of the power element; the movement track of the workpiece storage block passes under the discharge holes of the feeding mechanism one by one.

The one-by-one feeding mechanism is installed on the feeding base, and includes a sliding frame, a feeding power element, a sliding plate and a feeding block. The sliding plate and the sliding frame form a sliding pair. The sliding plate is driven by the feeding power element to slide. The outer end of the slide passes under the feed block. The middle part of the feeding block is provided with n feeding holes side by side; the outer end of the slide plate is provided with n transition holes side by side; the outer end of the sliding frame is provided with n discharging holes. When the slide plate is at the inner limit position, the n transition holes are aligned with the n feed holes respectively. When the slide plate is at the outer limit position, the n transition holes are aligned with the n discharge holes respectively. During the feeding process, the n discharge holes on the carriage are located just above the n material placement positions on one of the workpiece storage blocks. The tops of the n feeding holes of the feeding block and the n material output ports of the vibrating disc conveying mechanism are respectively connected through the conveying circular pipe;

Preferably, the vibrating disc conveying mechanism includes a conveying base, a vibrating disc and a material storage funnel. One or more vibrating discs are mounted on the feeding base. Each vibrating plate has a total of n workpiece output ports. A storage funnel is arranged above the vibrating plate. The storage funnel is fixed with the feeding base. The workpieces to be loaded are stacked in the storage hopper and the vibrating plate.

Preferably, the one-by-one feeding mechanism further includes a first sensor group; the outer ends of the slide plate are provided with n detection holes side by side and horizontally; the n detection holes are distributed with the n material transition holes; the first sensor group It includes n first optical fiber sensors; the n first optical fiber sensors are installed side by side on the outer end of the carriage, and the detection heads are respectively aligned with the n detection holes on the sliding plate.

Preferably, the one-by-one feeding mechanism further includes a hammering cylinder; the hammering cylinder is fixed to the feeding base. The outer end of the piston rod of the hammering cylinder faces the position of the workpiece mounting block below the one-by-one feeding mechanism, and the end is fixed with a hammer head.

Preferably, the one-by-one feeding mechanism further includes a second sensor group; the second sensor group includes n second optical fiber sensors; the n second optical fiber sensors are arranged side by side; the detection heads of the n second optical fiber sensors are located in the workpiece installation Between the top surface of the block and the bottom surface of the carriage, and corresponding to the positions of the n feeding holes.

Preferably, the separating and feeding mechanism further includes a switching turntable and a switching driving element. The switching turntable is supported in the middle of the feeding base; the switching drive element drives the switching turntable to rotate and position. The m workpiece storage blocks are all installed at the edge of the top surface of the switch turntable, and are evenly distributed along the circumferential direction of the switch turntable axis.

Preferably, the separating and feeding mechanism further includes a central fixing plate; the central fixing plate is coaxially arranged above the station switching plate and fixed to the frame; the hammering cylinder and each second optical fiber sensor are installed on the center plate.

Preferably, the one-by-one feeding mechanism further includes an air blower; the n air outlets arranged downwardly by the air blower are respectively located directly above the n discharge holes.

Preferably, the n discharge holes are located on the side of the feed block close to the axis of the switch turntable. The thickness of the sliding plate is greater than or equal to the length of the workpiece to be loaded, and less than twice the length of the workpiece to be loaded.

The specific steps of the automatic workpiece feeding method of the bar-shaped rotary workpiece one by one automatic feeding device are as follows:

Step 1: The vibrating plate conveying mechanism sends the workpieces one by one into the n conveying circular tubes, and the conveying circular tubes convey the workpieces to the n feeding holes of the feeding block. The workpieces in the n feeding holes fall into the n transition holes on the slide plate respectively. Then repeat steps 2 and 3 to realize continuous automatic feeding.

Step 2: The feed power element drives the workpiece in the transition hole of the slide to move above the discharge hole at the outer end of the carriage, and falls into the workpiece storage block at the workpiece loading station through the discharge hole. After that, the feeding power element is reset, so that the next workpiece in the feeding hole enters the transition hole.

Each first optical fiber sensor detects whether the corresponding transition hole obtains the workpiece from the feeding hole, and whether the workpiece leaves the transition hole smoothly; each second optical fiber sensor detects whether the corresponding discharge hole outputs the workpiece to the material placement position. If the workpiece is stuck in the transition hole or discharge hole, or is not placed flat in the material placement position, the air blower blows out the gas, and the hammering cylinder expands and contracts several times to generate vibration, so that the stuck workpiece moves and falls correctly. into the workpiece storage block.

Step 3: Move an empty workpiece storage block to the bottom of each discharge hole.

The beneficial effects that the present invention has are:

1. The present invention automatically transports the workpieces to the feeding mechanism one by one through the vibrating plate and the pipeline, and then passes the reciprocating sliding of the sliding plate, as well as the feeding hole on the feeding block, the transition hole on the sliding plate and the discharging hole on the carriage. In cooperation with each other, the function of separating the workpieces arranged in sequence in the pipeline to the workpiece storage block one by one is realized, which is convenient for subsequent automatic production.

2. The central fixed plate in the present invention is coaxially arranged above the switch turntable and kept fixed, leaving enough space for the installation of the sensor, making the installation of the drinking fountain more stable and reliable.

3. The second sensor group in the present invention utilizes the detection holes 6-11 transversely penetrating the transition hole, which can not only detect whether the transition hole enters the workpiece, but also can detect whether the workpiece leaves the transition hole smoothly.

4. Each installation mechanism of the present invention is provided with a hammering cylinder; when the hammering cylinder can fall from the workpiece and there is a deviation, the vibration generated by the hammering causes the workpiece to enter the correct position, so that the present invention has the Certain automatic error correction capability further improves the automation degree of the present invention.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the present invention;

Fig. 2 is the perspective view of separating and feeding mechanism in the present invention;

Fig. 3 is the perspective view of feeding mechanism one by one in the present invention;

FIG. 4 is a top view of the feeding mechanism one by one in the present invention.

Detailed ways

The present invention will be further described below with reference to the accompanying drawings.

Example 1

As shown in Figure 1, an automatic feeding device for strip-shaped rotary workpieces one by one includes a vibrating plate feeding mechanism, a feeding circular tube 7 and a separate feeding mechanism arranged side by side. The vibrating disc conveying mechanism includes a conveying base 8 , a vibrating disc 9 and a material storage funnel 10 . There are two vibration plates 9 in total. Both vibrating discs 9 are mounted on the feeding base 18 . Each vibrating plate 9 has two workpiece output ports. A storage funnel 10 is provided above the vibrating plate 9 . The storage funnel 10 is fixed to the feeding base 18 . The workpieces to be loaded are stacked in the storage hopper 10 and the vibrating plate 9 .

As shown in Figures 2, 3 and 4, the separate feeding mechanism includes a feeding base 1, a switching turntable 2, a central fixing plate 3, a switching driving element 4, a workpiece storage block 5 and a feeding mechanism 6 one by one. The switching drive element 4 employs a motor and a reducer. The switching turntable 2 is supported in the middle of the feeding base 1; the switching drive element 4 is installed on the feeding base 1, and the rotary output port is fixed with the switching turntable 2 to drive the switching turntable 2 to rotate and position. The central fixed plate 3 is coaxially arranged above the switch turntable 2; the bottom of the central fixed plate 3 is fixed with a fixed column. The fixed column passes through the center hole of the switching turntable 2 and is fixed with the feeding base 1 . The eight workpiece storage blocks 5 are installed at the edge of the top surface of the switch turntable 2 and are evenly distributed along the circumferential direction of the axis of the switch turntable 2 . The top of each workpiece storage block 5 is provided with four workpiece placement positions. The workpiece placement position is in the shape of a circular hole, and the inner diameter is equal to the diameter of the workpiece, which is used for placing and positioning the workpiece.

The one-by-one feeding mechanism 6 is installed on the feeding base 1 and is located on one side of the switching turntable 2, which includes a sliding frame 6-1, a feeding cylinder 6-2, a sliding plate 6-3, a feeding block 6-4, a detection Assembly, blower 6-5 and hammer cylinder 6-6. The sliding frame 6-1 is fixed on the table top of the feeding base 1; The sliding plate 6-3 is limited by the limit block 6-9 and the gas spring 6-10 to limit the inner and outer limit positions. The feeding cylinder 6-2 is fixed on the sliding frame 6-1, and the piston rod is fixed with the sliding plate 6-3. The feeding block 6-4 is in the shape of a door and is fixed on the outer end of the carriage 6-1. The outer end of the slide 6-3 passes under the feed block 6-4. The middle of the feed block 6-4 is provided with four feed holes 6-4-1 side by side; the outer end of the slide plate 6-3 is provided with four transition holes 6-3-1 side by side; the outer end of the carriage 6-1 There are four discharge holes. The four discharge holes are aligned with the four feed holes 6-4-1 along the sliding direction of the slide plate 6-3; and the four discharge holes are located on the side of the feed block 6-4 close to the axis of the switch turntable 2. When the sliding plate 6-3 is at the inner limit position, the four transition holes 6-3-1 are aligned with the four feeding holes 6-4-1 respectively. When the sliding plate 6-3 is at the outer limit position, the four transition holes 6-3-1 are aligned with the four discharge holes respectively. The center-to-center distance of two adjacent discharge holes is equal to the center-to-center distance of two adjacent workpiece placement positions. The distances from the axes of the four discharge holes on the carriage 6-1 to the axis of the switch turntable 2 are respectively equal to the distances from the axes of the n workpiece placement positions on the workpiece storage block to the axis of the switch turntable 2 . During the feeding process, the four discharge holes on the carriage 6-1 are located just above the n workpiece placement positions on one of the workpiece storage blocks 5 .

The thickness of the sliding plate 6-3 is greater than or equal to the length of the workpiece to be loaded, and less than twice the length of the workpiece to be loaded, so as to prevent two workpieces to be loaded from falling into the transition hole 6-3-1. The air blowing piece 6-5 is provided with an air inlet and four air outlets, and a flow channel connecting the air inlet and the air outlet is arranged inside. The four air outlets of the air blowing piece 6-5 are respectively located directly above the four discharge holes, which are used to prevent the installed workpiece from being stuck in the transition hole 6-3-1 or the discharge hole by blowing air. The air inlet of the air blower 6-5 is connected to the air outlet of the air pump.

The outer end of the sliding plate 6-3 is provided with four detection holes 6-11 laterally side by side. The four detection holes 6-11 all pass through the slide plate 6-3 horizontally, and pass through the four transition holes 6-3-1 respectively. The detection assembly includes a first sensor group and a second sensor group. The first sensor group includes four first fiber optic sensors 6-7. Four first optical fiber sensors 6-7 are installed side by side at the outer end of the carriage 6-1, and the detection heads are aligned with the four detection holes 6-11 on the slide 6-3, respectively. When the workpiece in the feeding hole 6-4-1 falls into the transition hole 6-3-1, the first optical fiber sensor 6-7 changes from being blocked to being blocked, the output signal changes, and the first optical fiber sensor 6-7 changes. -7 can detect whether the workpiece discharge is normal and in place and give a signal for the next step.

The second sensor group includes four second fiber optic sensors 6-8. Four second fiber optic sensors 6 - 8 are mounted side by side at the edge of the central fixed disk 3 . The detection heads of the four second optical fiber sensors 6-8 are higher than the top surface of the workpiece storage block 5, and are respectively located below the four discharge holes on the carriage 6-1. The second optical fiber sensors 6-8 are used to detect whether the workpieces fall into the corresponding workpiece storage blocks 5 from each mounting mechanism smoothly. The hammering cylinder 6-6 is installed on the central fixing plate 3, and the outer end of the piston rod is fixed with a hammer head, and faces the corresponding workpiece storage block 5; when the installed workpiece is stuck in the feeding hole 6-4-1, the transition hole 6 -3-1 or the discharge hole, the hammer head on the hammering cylinder 6-6 hits the workpiece storage block 5, and generates vibration that assists the workpiece to fall. Through the cooperation of the hammering cylinder 6-6 and the air blowing piece 6-5, the problem that most workpieces are stuck can be overcome, thereby greatly reducing the failure rate of the present invention.

The tops of the four feeding holes 6-4-1 of the feeding block 6-4 are connected with the four workpiece output ports of the vibrating disc conveying mechanism respectively through the feeding round pipe 7; the vibrating disc 9 will arrange the loaded workpieces one by one It is sent into the feeding round pipe 7, and is transported by the feeding round pipe 7 to the feeding hole 6-4-1 of the feeding block 6-4.

The specific steps of the automatic workpiece feeding method of the bar-shaped rotary workpiece one by one automatic feeding device are as follows:

Step 1. Pour the loaded workpieces into the storage funnel 10, and the workpieces enter the vibrating plate 9 through the storage funnel 10. It is transported to the four feeding holes 6-4-1 of the feeding block 6-4 by the feeding round pipe 7. The workpieces in the four feeding holes 6-4-1 drop into the four transition holes 6-3-1 on the sliding plate 6-3 respectively. Then repeat steps 2 and 3 to realize continuous automatic feeding.

Step 2: The feeding cylinder 6-2 is pushed out, so that the workpiece in the transition hole 6-3-1 of the slide 6-3 moves to the top of the discharge hole at the outer end of the carriage 6-1, and falls on the workpiece through the discharge hole. in the workpiece storage block 5 of the material station. After that, the feeding cylinder 6-2 retracts and returns to the original position, so that the next workpiece in the feeding hole 6-4-1 enters the transition hole 6-3-1.

Each first optical fiber sensor 6-7 detects whether the corresponding transition hole 6-3-1 obtains the workpiece from the feeding hole 6-4-1, and whether the workpiece leaves the transition hole 6-3-1 smoothly; each second optical fiber The sensors 6-8 respectively detect whether the corresponding discharge hole outputs the workpiece to the workpiece placement position. If the workpiece is stuck in the transition hole 6-3-1, the discharge hole, or is not placed flat at the workpiece placement position, the air blower blows out the gas, and the hammer blows the cylinder to expand and contract several times to generate vibration, which makes the stuck workpiece occur. move, and fall into the workpiece storage block 5 correctly.

Step 3: The switching turntables 2 are all rotated by 45°, so that a new vacant workpiece storage block 5 is moved to the bottom of each discharge hole. The workpieces on the workpiece storage block 5 with the workpieces are arranged side by side, and can be clamped by an industrial robot for subsequent automated use.

Example 2

The difference between this embodiment and Embodiment 1 is that the position of each workpiece storage block 5 is not adjusted by switching the turntable, but is adjusted by the conveyor belt.

Claims (8)

1. A strip-shaped rotary workpiece automatic feeding device one by one, comprising a vibrating disc feeding mechanism, a feeding circular tube (7) and a separating feeding mechanism arranged side by side; it is characterized in that: the vibrating disc feeding mechanism is The n material output ports are arranged to continuously output the workpieces one by one through the vibrating plate (9); the said separation feeding mechanism comprises a feeding base (1), a workpiece storage block (5) and a feeding mechanism (6) one by one; There are m workpiece storage blocks (5) in total, m≥2; each workpiece storage block (5) is provided with n material placement positions on the top; the workpiece storage blocks (5) can be moved under the driving of power elements; the workpiece storage blocks The moving trajectory of (5) passes under the discharge holes of the feeding mechanism (6) one by one; The one-by-one feeding mechanism (6) is installed on the feeding base (1), and includes a carriage (6-1), a feeding power element, a sliding plate (6-3) and a feeding block (6-4); The sliding plate (6-3) and the carriage (6-1) constitute a sliding pair; the sliding plate (6-3) is driven by the feeding power element to slide; the outer end of the sliding plate (6-3) passes through the feeding block (6-4) below; the middle of the feed block (6-4) is provided with n feed holes (6-4-1) side by side; the outer end of the slide plate (6-3) is provided with n transition holes (6-3- 1); The outer end of the carriage (6-1) is provided with n discharge holes; when the slide plate (6-3) is at the inner limit position, n transition holes (6-3-1) and n feeds The holes (6-4-1) are aligned respectively; when the slide plate (6-3) is at the outer limit position, the n transition holes (6-3-1) are aligned with the n discharge holes respectively; during the feeding process , the n discharge holes on the carriage (6-1) are located directly above the n material placement positions on one of the workpiece storage blocks (5); the n feed holes ( The top of 6-4-1) and the n material output ports of the vibrating plate conveying mechanism are respectively connected through the conveying round pipe (7); The one-by-one feeding mechanism (6) further comprises a hammering cylinder (6-6); the hammering cylinder (6-6) is fixed with the feeding base (1); the hammering cylinder (6-6) The outer end of the piston rod faces the position of the workpiece storage block (5) below the one-by-one feeding mechanism (6), and a hammer head is fixed at the end; the hammer head on the hammering cylinder (6-6) hits the workpiece storage block (5) , to generate vibration of auxiliary workpiece falling; The one-by-one feeding mechanism (6) further includes an air blower (6-5); the n air outlets provided downwardly by the air blower (6-5) are respectively located directly above the n discharge holes, for Avoid the workpiece to be stuck in the transition hole (6-3-1) or the discharge hole by blowing air. 2. A strip-shaped rotary workpiece automatic feeding device one by one according to claim 1, characterized in that: the vibrating disc conveying mechanism comprises a conveying base (8), a vibrating disc (9) and a storage A material hopper (10); one or more vibrating discs (9) are installed on the feeding base (1); each vibrating disc (9) has a total of n workpiece output ports; all vibrating discs (9) are provided above There is a storage funnel (10); the storage funnel (10) is fixed with the feeding base (1); the workpieces to be loaded are stacked in the storage funnel (10) and the vibrating plate (9). 3. An automatic feeding device for bar-shaped rotary workpieces one by one according to claim 1, characterized in that: the one by one feeding mechanism (6) further comprises a first sensor group; The outer ends are provided with n detection holes side by side; the n detection holes are respectively intersected with the n material transition holes (6-3-1); the first sensor group includes n first optical fiber sensors (6-7) ; n first optical fiber sensors (6-7) are installed side by side on the outer end of the carriage (6-1), and the detection heads are respectively aligned with the n detection holes on the slide (6-3). 4 . The strip-shaped rotary workpiece automatic feeding device one by one according to claim 3 , wherein the one by one feeding mechanism ( 6 ) further comprises a second sensor group; the second sensor group includes n sensors 4 . The second optical fiber sensors (6-8); the n second optical fiber sensors (6-8) are arranged side by side; the detection heads of the n second optical fiber sensors (6-8) are located on the top surface of the workpiece storage block (5) and the slide between the bottom surfaces of the racks (6-1) and corresponding to the respective positions of the n feed holes (6-4-1). 5 . The strip-shaped rotary workpiece automatic feeding device one by one according to claim 1 , wherein the separation feeding mechanism further comprises a switching turntable ( 2 ) and a switching driving element ( 4 ); the switching turntable (2) Supported in the middle of the feeding base (1); the switching drive element (4) drives the switching turntable (2) to rotate and position; m workpiece storage blocks (5) are installed on the top surface of the switching turntable (2). at the edge, and evenly distributed along the circumference of the axis of the switch turntable (2). 6 . The strip-shaped rotary workpiece automatic feeding device one by one according to claim 5 , characterized in that: the separation feeding mechanism further comprises a central fixing plate (3); the central fixing plate (3) ) is coaxially arranged above the switching turntable (2), and is fixed with the feeding base (1); the hammering cylinder (6-6) and each second optical fiber sensor (6-8) are installed on the central fixing plate ( 3) on. 7. A strip-shaped rotary workpiece automatic feeding device one by one according to claim 1, characterized in that: the n discharge holes are located on the side of the feeding block (6-4) close to the axis of the switching turntable (2) ; The thickness of the slide plate (6-3) is greater than or equal to the length of the workpiece to be loaded, and less than twice the length of the workpiece to be loaded. 8. The material feeding method of a strip-shaped rotary body workpiece one by one automatic feeding device as claimed in claim 4, characterized in that: in step 1, the vibrating plate feeding mechanism sends the workpieces one by one into n feeding circles. pipe (7), and conveyed by the feeding round pipe (7) to the n feeding holes (6-4-1) of the feeding block (6-4); the n feeding holes (6-4-1) The workpieces in 1) fall into the n transition holes (6-3-1) on the slide plate (6-3) respectively; then repeat steps 2 and 3 to realize continuous automatic feeding; Step 2. The feed power element drives the workpiece in the transition hole (6-3-1) of the slide (6-3) to move to the top of the discharge hole at the outer end of the carriage (6-1), and falls into the discharge hole through the discharge hole. In the workpiece storage block (5) of the workpiece feeding station; after that, the feeding power element is reset, so that the next workpiece in the feeding hole (6-4-1) enters the transition hole (6-3-1); Each first optical fiber sensor (6-7) detects whether the corresponding transition hole (6-3-1) obtains the workpiece from the feed hole (6-4-1), and whether the workpiece leaves the transition hole (6-3-1) smoothly. -1); each second optical fiber sensor (6-8) detects whether the corresponding discharge hole outputs the workpiece to the material placement position; if the workpiece is stuck in the transition hole (6-3-1), the discharge hole, or the If the material placement position is not flat, the air blower blows out the gas, and the hammering cylinder expands and contracts several times to generate vibration, so that the stuck workpiece moves and falls into the workpiece storage block (5) correctly; Step 3. An empty workpiece storage block (5) is moved to the bottom of each discharge hole.

Images