Workpiece transfer equipment

Abstract

The present invention provides a workpiece transfer equipment, including: a transfer guide rail, including a transfer station, a feeding station and a discharging station; a transfer mechanism, including a transfer seat slidingly arranged on the transfer guide rail, a lower driving member connected between the transfer seat and a transfer drive device, an upper driving member connected to the lower driving member and capable of lifting and lowering and moving laterally, and a clamping device connected to the upper driving member and located above the transfer seat, the clamping device including a clamping member driven by the clamping drive device, a limiting structure for limiting the workpiece is provided on the transfer seat, the transfer drive device is used to drive the lower driving member and the upper driving member to drive the transfer seat and the clamping member to move along the transfer guide rail; a feeding mechanism for inputting the workpiece; and a discharging mechanism for outputting the workpiece. The travel and duration of the clamping member clamping the workpiece in the air are shortened, the risk of the workpiece slipping and being damaged during transfer is minimized, and the stability of the transfer equipment in transferring the workpiece is improved, so as to ensure the yield rate of workshop production.

Description

Technical Field

[0001] The present invention relates to the field of transfer equipment, in particular to a workpiece transfer equipment. Background Art

[0002] When producing pulley workpieces in a workshop, the workpiece blank needs to be transferred to a processing station for processing through a workpiece transfer equipment. The processing station can perform spinning processing on the outer wall of the workpiece blank to form a number of grooves.

[0003] Existing workpiece transfer equipment generally consists of a feed conveyor line and a discharge conveyor line in conjunction with a robotic arm. The transfer method is that the workpiece blank is conveyed to the back side of the robotic arm through the feed conveyor line. The robotic arm then turns around to grab the workpiece and turns around to place the workpiece blank on the processing station. After the workpiece is processed at the processing station, the robotic arm grabs the finished workpiece and turns around to place it on the discharge conveyor line for output.

[0004] It can be seen that the existing workpiece transfer equipment requires a robotic arm for precise handling and positioning, which greatly increases the transfer cost. In addition, when the robotic arm clamps the workpiece blank or the workpiece finished product for transfer, it mainly relies on the clamping force of the clamping parts and the friction between the clamping parts and the outer wall of the workpiece to prevent it from falling. This traditional clamping and transfer method has the risk of the workpiece falling and being damaged, or the workpiece being damaged by excessive clamping force when the workpiece is heavy and the transfer stroke is long. Especially for the finished workpiece, once damaged, it becomes waste, resulting in a decrease in the yield rate of workshop production.

[0005] The research purpose of this invention is to design a workpiece transfer device to solve the problems existing in the above-mentioned prior art. Summary of the Invention

[0006] The present invention provides a workpiece transfer device that can effectively solve the above problems.

[0007] The present invention is achieved in that:

[0008] A workpiece transfer device, comprising:

[0009] Transfer rails, including transfer stations with spacing corresponding to the corresponding processing stations, as well as feeding stations and discharging stations;

[0010] The transfer mechanism includes a transfer seat slidably arranged on the transfer guide rail, a lower driving member connected between the transfer seat and the transfer drive device, an upper driving member connected to the lower driving member and driven by the lifting drive device to lift up and down and driven by the telescopic drive device to move laterally, and a clamping device connected to the upper driving member and located above the transfer seat, the clamping device including a clamping member driven by the clamping drive device for clamping a corresponding workpiece, a limiting structure for limiting the workpiece is provided on the transfer seat, and the transfer drive device is used to drive the lower driving member and the upper driving member to drive the transfer seat and the clamping member to move along the transfer guide rail;

[0011] A feeding mechanism, used for feeding the workpiece onto the transfer seat located at the feeding station;

[0012] A discharge mechanism, used for discharging the workpiece on the transfer seat at the discharge station;

[0013] When the workpiece is located on the transfer seat, the limiting structure limits the workpiece, and the clamping member clamps the workpiece;

[0014] When the transfer seat slides to the transfer station, the clamping member is used to clamp the workpiece on the transfer seat to the processing station or to clamp the workpiece on the processing station to the transfer seat.

[0015] Furthermore, the transfer guide rail is configured to be arc-shaped and its opening is facing away from the processing station. The transfer station is located in the middle of the transfer guide rail. The feeding station and the discharging station are symmetrically located on both sides of the transfer station. The transfer drive device includes a rotating seat driven to rotate by a telescopic cylinder. The transfer mechanism is provided with two sets of loading mechanisms and unloading mechanisms which are arranged at an angle therebetween; the rotating seat is used to drive the transfer seats of the loading mechanism and the unloading mechanism to slide to the feeding station and the transfer station respectively, or to drive the transfer seats of the loading mechanism and the unloading mechanism to slide to the transfer station and the discharging station respectively.

[0016] Furthermore, the transfer guide rail is configured to be semicircular, the feeding mechanism and the discharging mechanism extend forward and backward respectively corresponding to the two ends of the transfer guide rail, the bottom of the transfer seat is limited by a number of laterally rotating limiting rollers and rolling clamps arranged on the outer walls on both sides of the transfer guide rail, the transfer station is located in the middle of the transfer guide rail, and the feeding station and the discharging station are respectively located at the two ends of the transfer guide rail.

[0017] Furthermore, the feeding mechanism and the discharging mechanism respectively include a left-right symmetrical feeding conveyor line and a discharging conveyor line, and the discharging end of the feeding conveyor line and the feeding end of the discharging conveyor line are respectively provided with a feeding device and a discharging device with the same structure, and the feeding device includes a plurality of turntables driven to rotate by a self-rotating driving device and arranged at intervals up and down, and an arc guide rail located below the outer sides of the plurality of turntables and with both ends respectively docked with the feeding station and the feeding conveyor line, and a plurality of driving grooves are recessed at intervals on the outer periphery of the plurality of turntables, and an arc baffle is provided above the outer side of the arc guide rail with intervals corresponding to the notches of the driving grooves; after the transfer seat of the loading mechanism slides to the feeding station and the feeding conveyor line sends the workpiece into the driving groove, the driving groove of the feeding device rotates to drive the workpiece blank to slide along the arc of the arc guide rail to the transfer seat of the loading mechanism.

[0018] Furthermore, the tops of the transfer seats of the loading mechanism and the unloading mechanism are both recessed and provided with a limiting groove with an opening on one side for docking with the arc guide rail. The limiting grooves of the loading mechanism and the unloading mechanism are arranged in an arc shape and are respectively adapted to the arc extension directions of the arc guide rails of the feeding device and the discharging device. The limiting structure includes the limiting groove; the driving groove of the feeding device rotates to drive the workpiece blank on the feeding conveyor line to slide along the arc of the arc guide rail to the limiting groove of the loading mechanism, and the driving groove of the discharging device rotates to drive the finished workpiece in the limiting groove of the unloading mechanism to slide along the arc of the arc guide rail to the discharging conveyor line.

[0019] Furthermore, the middle of the workpiece is penetrated by holes in the upper and lower parts, and the clamping device also includes a driving seat connected to the upper driving member. There are two clamping members, and the clamping driving device is arranged in the driving seat and the two driving ends are respectively connected to the upper ends of the two clamping members after sliding through the driving seat through a number of sliding rods. The sliding rod is provided with a buffer spring that is installed between the driving seat and the clamping member. The two clamping members are arranged in the shape of vertical plates and the facing sides are provided with an anti-slip layer that is adapted to the curvature of the outer wall of the workpiece.

[0020] Furthermore, several of the turntables correspond to the lower part of the workpiece, two of the clamping members correspond to the upper part of the workpiece, and a vertically extending airbag with an outer diameter smaller than the inner diameter of the through-hole is fixedly provided on the bottom middle part of the driving seat, and the opposite sides of the two clamping members are respectively protruded with extrusion members extending toward each other; when the upper driving member moves until the airbag extends into the through-hole of the workpiece and the two clamping members correspond to the outer wall of the workpiece, the clamping driving device drives the two clamping members to clamp the outer wall of the workpiece, and the two extrusion members move toward each other to squeeze the upper part of the airbag, so that the lower part of the airbag bulges and fits tightly against the inner wall of the through-hole.

[0021] Furthermore, the extrusion piece is in the shape of a transversely extending plate, and the facing sides of the two extrusion pieces are recessed to form an extrusion portion corresponding to the outer wall of the upper portion of the airbag, and a flexible layer is provided on both extrusion portions.

[0022] Furthermore, the upper driving member and the lower driving member are spaced apart and arranged in parallel with each other, and a lifting seat is provided between the upper driving member and the lower driving member. One end of the lifting seat extends laterally to form a sliding sleeve for slidingly inserting the upper driving member, and the other end is folded downward and slidably connected to the top of the lower driving member. The lifting drive device is provided at the top of the lower driving member and is used to drive the lifting seat to move up and down. The telescopic drive device is provided in the sliding sleeve and is used to drive the upper driving member to move laterally.

[0023] Furthermore, the transfer drive device also includes a base for rotatably installing the rotating seat, the bottom middle part of the lower driving member is rollingly supported on the base through a support roller, and the top middle part is provided with a support cylinder vertically coaxially arranged with the support roller, and the bottom middle part of the lower driving member is provided with a sleeve that extends vertically and slides up and down on the outside of the support cylinder, and the support cylinder is provided with a support spring with upper and lower ends arranged between the sliding sleeve and the lower driving member.

[0024] The beneficial effects of the present invention are:

[0025] 1. During the transfer of the workpiece: when the workpiece is on the transfer seat, the limiting structure limits the workpiece, the clamping member clamps the workpiece, and the transfer drive device drives the lower driving member and the upper driving member to drive the transfer seat and the clamping member to move along the transfer guide rail; thereby, the workpiece is doubly fixed by the limiting structure of the transfer seat and the clamping member, so that the upper driving member and the lower driving member can stably drive the rotating seat and the workpiece to move along the transfer guide rail to the transfer station. During this period, due to the supporting and limiting effect of the transfer seat, the clamping member is not suspended to grasp and transport the workpiece, so there is no risk of the workpiece slipping and being damaged between the clamping members, which can greatly improve the stability of the workpiece transfer to the transfer station; on this basis On the basis, when the transfer seat slides to the transfer station, the clamping parts are used to lift up and down and move laterally to clamp the workpiece on the transfer seat to the processing station or to clamp the workpiece on the processing station to the transfer seat; thereby, the clamping parts only need to perform a short-stroke suspended clamping of the workpiece between the transfer station and the processing station with a certain distance set, which greatly shortens the stroke and duration of the suspended clamping of the workpiece by the clamping parts, and minimizes the risk of the workpiece slipping and being damaged between the clamping parts during transfer. In addition, this setting can appropriately reduce the clamping force of the clamping parts to avoid damage to the workpiece due to excessive clamping force, thereby improving the stability of the transfer equipment in transferring the workpiece, and ensuring the yield rate of workshop production.

[0026] 2. When the rotating seat drives the transfer seats of the loading mechanism and the unloading mechanism to slide to the feeding station and the transfer station respectively, the feeding mechanism inputs the next-level workpiece blank to the transfer seat of the loading mechanism, and the clamping parts of the unloading mechanism clamp the previous-level workpiece finished product on the processing station to the transfer seat of the unloading mechanism. When the rotating seat drives the transfer seats of the loading mechanism and the unloading mechanism to slide to the transfer station and the unloading station respectively, the clamping parts of the loading mechanism clamp the next-level workpiece blank on the transfer seat to the processing station, and the unloading mechanism outputs the previous-level workpiece finished product located on the transfer seat of the unloading mechanism. Therefore, by setting the transfer guide rail to an arc shape, not only the moving efficiency of the transfer seat can be improved, but also the footprint of the transfer drive device can be reduced and the compactness of the structure can be improved. Through the division of labor and cooperation of the transfer seat of the loading mechanism and the unloading mechanism, the transfer drive device drives the loading mechanism and the unloading mechanism to rotate once, and the unloading and unloading of the finished workpiece of the previous level and the feeding and loading of the workpiece blank of the next level can be realized, which greatly reduces the waiting time for the workpiece to be fed in and out and loaded and unloaded, and improves its working efficiency while reducing the energy consumption of the transfer mechanism, thereby greatly improving the transfer efficiency of the workpiece.

[0027] 3. After the transfer seat of the loading mechanism slides to the feeding station and the feeding conveyor line feeds the workpiece into the driving slot, the driving slot of the feeding device rotates to drive the workpiece blank to slide along the arc of the arc guide rail to the transfer seat of the loading mechanism; similarly, after the transfer seat of the unloading mechanism slides to the unloading station and the clamping piece releases and rises to separate from the finished workpiece, the driving slot of the feeding device rotates to drive the finished workpiece to slide along the arc of the arc guide rail to the unloading conveyor line. Thus, by adding a turntable, an arc guide rail and an arc baffle, the workpiece blanks and finished workpieces can be automatically fed and unloaded one by one by the feeding mechanism and the unloading mechanism respectively, and the preparation of several workpiece blanks can be realized by the several driving slots and arc guide rails of the feeding device, thereby avoiding the situation where the transfer seat of the loading mechanism has to wait too long after arriving at the loading station, and avoiding the situation where the transfer seat of the unloading mechanism has to wait too long after arriving at the unloading station by the several driving slots and arc guide rails of the unloading device, thereby improving the efficiency of workpiece feeding and unloading.

[0028] 4. When the upper drive member descends until the airbag extends into the workpiece's through-hole, the clamping drive device drives the two clamping members to clamp onto the workpiece's outer wall. The two extrusion members move toward each other, squeezing the upper portion of the airbag so that the lower portion of the airbag bulges and presses against the inner wall of the through-hole. The addition of the airbag and extrusion members allows the drive seat to not only press against the workpiece's outer wall via the clamping member's anti-slip layer, but also press against the inner wall of the through-hole via the lower portion of the airbag, which is bulged by the extrusion members. This significantly increases the contact area between the clamping device and the workpiece's inner and outer walls when clamping. While shortening the clamping member to avoid interference with the turntable, highly stable clamping and handling of the workpiece can still be achieved. Furthermore, the flexible, high-friction airbag and anti-slip layer, respectively, contacting the workpiece's inner and outer walls, does not cause wear to the inner and outer walls, nor does it pose the risk of damage to the workpiece due to excessive squeezing.

[0029] 5. The flexible layer is provided to prevent the extrusion part from damaging the airbag when the extrusion part extrudes the airbag through the extrusion portion, thereby reducing the life of the airbag, and at the same time improve the stability of the extrusion part in extruding the airbag.

[0030] The cam is fixed to the upper and lower surfaces of the support member so as to improve the stability of the support member, thereby improving the stability of the support member and improving the stability of the support member. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 The figure is a structural diagram of a workpiece transfer equipment.

[0032] Figure 2 for Figure 1 Schematic diagram of the partial top view structure.

[0033] Figure 3 for Figure 1 Schematic diagram of the local structure.

[0034] Figure 4 for Figure 1 Schematic diagram of the structure after removing the feeding mechanism and discharging mechanism.

[0035] Figure 5 This is a schematic diagram of the structure of the clamping devices of the loading mechanism and the unloading mechanism clamping the workpiece blank and the workpiece finished product.

[0036] Figure 6 It is a structural diagram of the loading mechanism and the unloading mechanism.

[0037] Figure 7 It is a schematic diagram of the cross-sectional structure when the clamping device does not clamp the workpiece.

[0038] Figure 8 It is a schematic diagram of the cross-sectional structure of the clamping device when clamping the workpiece.

[0039] Reference numerals:

[0040] Transfer rail 1, transfer station 11, feeding station 12, discharging station 13;

[0041] Transfer mechanism 2, transfer seat 21, limiting roller 211, limiting groove 212, lower driving member 22, supporting roller 221, supporting cylinder 222, upper driving member 23, sleeve 231, clamping device 24, clamping member 241, clamping driving device 242, driving seat 243, sliding rod 244, buffer spring 245, anti-slip layer 246, airbag 247, extrusion member 248, extrusion part 2481, lifting seat 25, sliding sleeve 251;

[0042] Transfer drive device 3, telescopic cylinder 31, rotating seat 32, base 33;

[0043] Feeding mechanism 4;

[0044] Unloading mechanism 5;

[0045] Processing station 6;

[0046] Feeding mechanism 7, feeding conveyor line 71, feeding device 72, turntable 721, driving trough 7211, rotation driving device 722, arc guide rail 723, arc baffle 724;

[0047] Discharging mechanism 8, discharging conveying line 81, discharging device 82. DETAILED DESCRIPTION

[0048] Reference Figure 1-8 As shown, a workpiece transfer device includes:

[0049] The transfer guide rail 1 includes a transfer station 11 with a spacing corresponding to the corresponding processing station 6, as well as a feeding station 12 and a discharging station 13;

[0050] The transfer mechanism 2 includes a transfer seat 21 slidably arranged on the transfer guide rail 1, a lower driving member 22 connected between the transfer seat 21 and the transfer drive device 3, an upper driving member 23 connected to the lower driving member 22 and driven by the lifting drive device to lift up and down and driven by the telescopic drive device to move laterally, and a clamping device 24 connected to the upper driving member 23 and located above the transfer seat 21, the clamping device 24 includes a clamping member 241 driven by the clamping drive device 242 for clamping the corresponding workpiece, a limiting structure for limiting the workpiece is provided on the transfer seat 21, and the transfer drive device 3 is used to drive the lower driving member 22 and the upper driving member 23 to drive the transfer seat 21 and the clamping member 241 to move along the transfer guide rail 1;

[0051] A feeding mechanism 7, used for feeding the workpiece onto the transfer seat 21 located at the feeding station 12;

[0052] A discharge mechanism 8, for discharging the workpiece on the transfer seat 21 of the discharge station 13;

[0053] The above structure makes it possible for the following to happen during the workpiece transfer process:

[0054] When the workpiece is located on the transfer seat 21, the limiting structure limits the workpiece, the clamping member 241 clamps the workpiece, and the transfer drive device 3 drives the lower driving member 22 and the upper driving member 23 to drive the transfer seat 21 and the clamping member 241 to move along the transfer guide rail 1; thereby, the workpiece is doubly fixed by the limiting structure of the transfer seat 21 and the clamping member 241, so that the upper driving member 23 and the lower driving member 22 can stably drive the rotating seat and the workpiece to move along the transfer guide rail 1 to the transfer station 11. During this period, due to the supporting and limiting effect of the transfer seat 21, the clamping member 241 is not suspended to grasp and transport the workpiece, so there is no risk of the workpiece slipping and being damaged between the clamping members 241, which can greatly improve the stability of the workpiece transported to the transfer station 11;

[0055] On this basis, when the transfer seat 21 slides to the transfer station 11, the clamping member 241 is used to lift up and down and move laterally to clamp the workpiece on the transfer seat 21 to the processing station 6 or to clamp the workpiece on the processing station 6 to the transfer seat 21; thereby, the clamping member 241 only needs to perform a short-stroke suspended clamping of the workpiece between the transfer station 11 and the processing station 6 with a spacing, which greatly shortens the stroke and duration of the suspended clamping of the workpiece by the clamping member 241, and minimizes the risk of the workpiece slipping and being damaged between the clamping members 241 during transfer. In addition, such a setting can appropriately reduce the clamping force of the clamping member 241 to avoid damage to the workpiece due to excessive clamping force, thereby improving the stability of the transfer equipment in transferring the workpiece to ensure the yield rate of workshop production.

[0056] In order to improve the workpiece transfer efficiency of the transfer equipment, the transfer guide rail 1 is set to be arc-shaped and the opening is facing away from the processing station 6. The transfer station 11 is located in the middle of the transfer guide rail 1, and the feeding station 12 and the discharging station 13 are symmetrically located on both sides of the transfer station 11. The transfer drive device 3 includes a rotating seat 32 driven to rotate by a telescopic cylinder 31, and the transfer mechanism 2 is provided with two sets of loading mechanisms 4 and unloading mechanisms 5 respectively, which are arranged at an angle therebetween; the arrangement of the above structure can be achieved: when the rotating seat 32 drives the transfer seats 21 of the loading mechanism 4 and the unloading mechanism 5 to slide to the When the feeding station 12 and the transfer station 11 are in operation, the feeding mechanism 7 inputs the next-level workpiece blank to the transfer seat 21 of the loading mechanism 4, and the clamping part 241 of the unloading mechanism 5 clamps the previous-level workpiece finished product on the processing station 6 to the transfer seat 21 of the unloading mechanism 5. When the rotating seat 32 drives the transfer seats 21 of the loading mechanism 4 and the unloading mechanism 5 to slide to the transfer station 11 and the unloading station 13 respectively, the clamping part 241 of the loading mechanism 4 clamps the next-level workpiece blank on the transfer seat 21 to the processing station 6, and the unloading mechanism 8 outputs the previous-level workpiece finished product located on the transfer seat 21 of the unloading mechanism 5. Therefore, by setting the transfer guide rail 1 to an arc shape, not only the moving efficiency of the transfer seat 21 can be improved, but also the footprint of the transfer drive device 3 can be reduced, and the compactness of the structure can be improved. Through the division of labor and cooperation of the transfer seat 21 of the loading mechanism 4 and the unloading mechanism 5, the transfer drive device 3 drives the loading mechanism 4 and the unloading mechanism 5 to rotate once, and the unloading and unloading of the previous level workpiece finished product and the feeding and loading of the next level workpiece blank can be realized, which greatly reduces the waiting time for the workpiece feeding and unloading and loading and unloading, and improves the working efficiency of the transfer mechanism 2 while reducing its working energy consumption, thereby greatly improving the transfer efficiency of the workpiece.

[0057] In order to improve the structural compactness of the transfer equipment, the transfer guide rail 1 is configured as a semicircular arc, the feed mechanism 7 and the discharge mechanism 8 extend forward and backward to correspond to the two ends of the transfer guide rail 1, and the bottom of the transfer seat 21 is clamped on the outer walls of the transfer guide rail 1 on both sides by a plurality of transversely rotating limit rollers 211. The transfer station 11 is located in the middle of the transfer guide rail 1, and the feed station 12 and the discharge station 13 are respectively located at the two ends of the transfer guide rail 1. This can reduce the distance between the feed mechanism 7 and the discharge mechanism 8, improve the structural compactness, and the limit roller 211 can improve the smoothness of the sliding of the transfer seat 21 on the transfer guide rail 1, thereby improving the transfer efficiency.

[0058] In order to realize automatic feeding of the feeding mechanism 7 and automatic discharging of the discharging mechanism 8, the feeding mechanism 7 and the discharging mechanism 8 respectively include a left-right symmetrical feeding conveyor line 71 and a discharging conveyor line 81, and the discharging end of the feeding conveyor line 71 and the feeding end of the discharging conveyor line 81 are respectively provided with a feeding device 72 and a discharging device 82 with the same structure, the feeding device 72 includes a plurality of turntables 721 driven to rotate by a self-rotating driving device 722 and arranged at intervals up and down, and an arc-shaped guide rail 723 located below the outer side of the plurality of the turntables 721 and docked with the feeding station 12 and the feeding conveyor line 71 at both ends. Specifically, the self-rotating driving device 722 is a stepping motor, and the outer periphery of the plurality of the turntables 721 is recessed with a plurality of driving grooves 7211 at intervals. An arc-shaped baffle 724 is provided above the outer side of the arc-shaped guide rail 723, with an interval corresponding to the groove of the driving groove 7211; the above structure can achieve: after the transfer seat 21 of the loading mechanism 4 slides to the feeding station 12 and the feeding conveyor line 71 sends the workpiece into the driving groove 7211, the driving groove 7211 of the feeding device 72 rotates to drive the workpiece blank to slide along the arc of the arc-shaped guide rail 723 to the transfer seat 21 of the loading mechanism 4; similarly, after the transfer seat 21 of the unloading mechanism 5 slides to the discharging station 13 and the clamping member 241 releases and rises to separate from the finished workpiece, the driving groove 7211 of the feeding device 72 rotates to drive the finished workpiece to slide along the arc of the arc-shaped guide rail 723 to the discharging conveyor line 81. Therefore, by adding the turntable 721, the arc guide rail 723 and the arc baffle 724, the workpiece blanks and the workpiece finished products can be automatically fed and unloaded one by one through the feeding mechanism 7 and the discharging mechanism 8 respectively, and the preparation of several workpiece blanks can be achieved through the several driving grooves 7211 and the arc guide rail 723 of the feeding device 72, thereby avoiding the situation where the transfer seat 21 of the loading mechanism 4 has to wait too much after arriving at the loading station, and avoiding the situation where the transfer seat 21 of the unloading mechanism 5 has to wait too much after arriving at the unloading station through the several driving grooves 7211 and the arc guide rail 723 of the discharging device 82, thereby improving the efficiency of workpiece feeding and unloading.

[0059] In order to improve the limiting effect of the limiting structure, the top of the transfer seat 21 of the loading mechanism 4 and the unloading mechanism 5 are both recessed and provided with a limiting groove 212 with an opening on one side to connect to the arc guide rail 723. The limiting grooves 212 of the loading mechanism 4 and the unloading mechanism 5 are arranged in an arc shape and are respectively adapted to the arc extension direction of the arc guide rail 723 of the feeding device 72 and the discharging device 82. The limiting structure includes the limiting groove 212; the driving groove 7211 of the feeding device 72 rotates to drive the workpiece blank on the feeding conveyor line 71 to slide along the arc of the arc guide rail 723 to the limiting groove 212 of the loading mechanism 4, and the driving groove 7211 of the discharging device 82 rotates to drive the finished workpiece in the limiting groove 212 of the unloading mechanism 5 to slide along the arc of the arc guide rail 723 to the discharging conveyor line 81. Therefore, by setting the limiting groove 212 to an arc shape, not only can the workpiece be smoothly slid in or out from the arc line of its opening side, but the lower end of the workpiece can also be limited along the moving direction when the transfer seat 21 moves along the transfer guide rail 1, so as to improve the limiting effect of the limiting groove 212 on the workpiece, improve the stability of the workpiece on the transfer seat 21, and thereby improve the stability of the workpiece transfer.

[0060] Specifically, a through-hole is provided through the upper and lower parts of the middle of the workpiece. In this embodiment, the workpiece is a pulley, and the through-hole is a connecting hole in the middle of the pulley. The clamping device 24 also includes a driving seat 243 connected to the upper driving member 23. There are two clamping members 241. The clamping driving device 242 is arranged in the driving seat 243 and the two driving ends are respectively connected to the upper ends of the two clamping members 241 after sliding through the driving seat 243 through a number of sliding rods 244. A buffer spring 245 is provided on the sliding rod 244 and is installed between the driving seat 243 and the clamping member 241. The two clamping members 241 are arranged in a vertical plate shape and the opposite sides are provided with an anti-slip layer 246 that is adapted to the curvature of the outer wall of the workpiece. The anti-slip layer 246 can be made of a flexible and high-friction rubber or other material. Therefore, the provision of the buffer spring 245 can prevent the two clamping members 241 from clamping together too quickly and violently, thereby preventing the workpiece from being damaged. The provision of the anti-slip layer 246 can increase the contact area and friction between the clamping member 241 and the outer wall of the workpiece when clamping the workpiece, which can greatly improve the stability of the clamping member 241 clamping the workpiece and reduce the risk of the workpiece sliding down and falling when the clamping member 241 is suspended in the air.

[0061] Since the limit groove 212 of the transfer seat 21 needs to correspond vertically with the driving groove 7211 of the turntable 721, the turntable 721 will inevitably interfere with the up and down movement of the clamping member 241. Therefore, in order to avoid interference between the turntable 721 and the clamping member 241, some of the turntables 721 correspond to the lower part of the workpiece, and two of the clamping members 241 correspond to the upper part of the workpiece. However, this arrangement will reduce the contact area between the clamping member 241 and the outer wall of the workpiece. Even if the stability of the clamping member 241 in clamping the workpiece is improved by the anti-slip layer 246 mentioned above, in order to avoid interference, the length of the clamping member 241 is shortened and it can only clamp the upper part of the workpiece. There is still a risk of the workpiece falling. Therefore, the bottom middle part of the driving seat 243 is fixed with a vertical extension and an outer diameter smaller than the inner diameter of the through hole. The airbag 247 has a diameter of 1.5 mm, and the opposite sides of the two clamping members 241 are respectively protruded with extrusion members 248 extending toward each other; the above structure can be realized: when the upper driving member 23 moves until the airbag 247 extends into the through-hole of the workpiece and the two clamping members 241 correspond to the outer wall of the workpiece, the clamping driving device 242 drives the two clamping members 241 to clamp the outer wall of the workpiece, and the two extrusion members 248 move toward each other to squeeze the upper part of the airbag 247, so that the lower part of the airbag 247 bulges and adheres to the inner wall of the through-hole. Specifically, the airbag 247 can be a flexible rubber airbag 247 with high friction, and an inflation port for inflation can be set on one side of the upper end of the airbag 247 to facilitate air replenishment when the internal gas of the airbag 247 is insufficient after long-term use. Therefore, by adding the airbag 247 and the extrusion piece 248, the drive seat 243 is not only pressed against the outer wall of the workpiece through the anti-slip layer 246 of the clamping piece 241, but also pressed against the inner wall of the perforation through the lower part of the airbag 247 squeezed and bulged by the extrusion piece 248, which greatly improves the contact area between the clamping device 24 and the inner and outer walls of the workpiece when clamping the workpiece. Under the premise that the length of the clamping piece 241 is shortened to avoid interference with the turntable 721, high-stability clamping and transportation of the workpiece can still be achieved, and the flexible and high-friction airbag 247 and the anti-slip layer 246 respectively contact the inner and outer walls of the workpiece without causing wear to the inner and outer walls of the workpiece, and there is no risk of damage to the workpiece due to excessive extrusion.

[0062] To achieve flexible contact between the extrusion member 248 and the airbag 247, the extrusion member 248 is in the form of a transversely extending plate. The facing sides of the two extrusion members 248 are recessed to form extrusion portions 2481 that correspond to and fit the upper outer wall of the airbag 247. Both extrusion portions 2481 are provided with a flexible layer, specifically made of a flexible material such as rubber. The provision of the flexible layer prevents damage to the airbag 247 caused by the extrusion member 248 squeezing the airbag 247 through the squeezing portions 2481, which could reduce the lifespan of the airbag 247. It also improves the stability of the extrusion member 248 squeezing the airbag 247.

[0063] Specifically, the upper driving member 23 and the lower driving member 22 are spaced apart and arranged in parallel with each other, and a lifting seat 25 is provided between the upper driving member 23 and the lower driving member 22. One end of the lifting seat 25 extends laterally to form a sliding sleeve 251 for slidingly inserting the upper driving member 23 laterally, and the other end is folded downward and slidably connected to the top of the lower driving member 22 up and down. The lifting drive device is provided at the top of the lower driving member 22 and is used to drive the lifting seat 25 to move up and down. The telescopic drive device is provided in the sliding sleeve 251 and is used to drive the upper driving member 23 to move laterally.

[0064] In order to improve the structural stability of the upper driving member 23 and the lower driving member 22, the transfer driving device 3 also includes a base 33 for rotatably installing the rotating seat 32. The bottom middle part of the lower driving member 22 is rollingly supported on the base 33 through the support roller 221, and the top middle part is provided with a support cylinder 222 vertically coaxially arranged with the support roller 221. The bottom middle part of the lower driving member 22 is provided with a sleeve 231 extending vertically and with upper and lower sliding sleeves 251 arranged on the outside of the support cylinder 222. A support spring is provided in the support cylinder 222 with upper and lower ends arranged between the sliding sleeve 251 and the lower driving member 22. Thus, by adding the support roller 221, the middle part of the lower driving member 22 is supported, and the structural stability of the lower driving member 22 is improved. At the same time, by connecting the upper and lower sliding sleeves 251 and the support column and support cylinder 222 vertically coaxially arranged with the support roller 221, and the setting of the support spring arranged between them and with the upper and lower ends set between the sliding sleeve 251 and the lower driving member 22, the effect of the support roller 221 and the support spring coaxially supporting the sliding sleeve 251 can be achieved, thereby improving the structural stability of the sliding sleeve 251 and the structural stability of the upper driving member 23 , and then the lower driving member 22 and the upper driving member 23 together drive the transfer seat 21 and the clamping member 241 to move along the transfer guide rail 1, and when the lifting seat 25 rises and the clamping member 241 of the upper driving member 23 is suspended to clamp the workpiece, the support roller 221 and the support spring can still achieve the effect of coaxially supporting the sliding sleeve 251 up and down. Therefore, by adding the support roller 221 and the support spring, the support strength of the upper driving member 23 and the lower driving member 22 is improved in all directions, the structural stability of the two is improved, and the stability of the workpiece transfer is improved.

[0065] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A workpiece transfer device, characterized in that: include: A transfer guide rail (1) comprising a transfer station (11) spaced apart from the corresponding processing station (6), a feeding station (12) and a discharging station (13); The transfer mechanism (2) comprises a transfer seat (21) slidingly arranged on the transfer guide rail (1), a lower driving member (22) connected between the transfer seat (21) and the transfer drive device (3), an upper driving member (23) connected to the lower driving member (22) and driven by the lifting driving device to move up and down and driven by the telescopic driving device to move laterally, and a clamping device (24) connected to the upper driving member (23) and located above the transfer seat (21), the clamping device (24) comprising a driving seat (243) connected to the upper driving member (23), a clamping driving device (242) arranged in the driving seat (243), and a clamping member (241) driven by the clamping driving device (242) for clamping a corresponding workpiece, the two clamping members (241) being configured as vertical plates and having anti-slip layers (246) adapted to the curvature of the outer wall of the workpiece on opposite sides, a through hole being provided in the middle of the workpiece, and the driving seat (2 The bottom middle part of the workpiece is fixed with an air bag (247) extending vertically and having an outer diameter smaller than the inner diameter of the through hole, and the two clamping members (241) are respectively provided with extrusion members (248) extending toward each other on the opposite sides; when the upper driving member (23) moves until the air bag (247) extends into the through hole of the workpiece and the two clamping members (241) correspond to the outer wall of the workpiece, the clamping driving device (242) drives the two clamping members (241) to clamp the workpiece. The two extrusion members (248) move toward each other to squeeze the upper part of the airbag (247), so that the lower part of the airbag (247) bulges and is close to the inner wall of the perforation; the transfer seat (21) is provided with a limiting structure for limiting the workpiece, and the transfer drive device (3) is used to drive the lower drive member (22) and the upper drive member (23) to drive the transfer seat (21) and the clamping member (241) to move along the transfer guide rail (1); A feeding mechanism (7) for feeding the workpiece onto the transfer seat (21) located at the feeding station (12); A discharge mechanism (8) for discharging the workpiece on the transfer seat (21) located at the discharge station (13); When the workpiece is located on the transfer seat (21), the limiting structure limits the workpiece, and the clamping member (241) clamps the workpiece; When the transfer seat (21) slides to the transfer station (11), the clamping member (241) is used to clamp the workpiece on the transfer seat (21) to the processing station (6) or to clamp the workpiece on the processing station (6) to the transfer seat (21).

2. A workpiece transfer device according to claim 1, characterized in that: The transfer guide rail (1) is configured to be arc-shaped and its opening faces away from the processing station (6); the transfer station (11) is located in the middle of the transfer guide rail (1); the feeding station (12) and the discharging station (13) are symmetrically located on both sides of the transfer station (11); the transfer drive device (3) includes a rotating seat (32) driven to rotate by a telescopic oil cylinder (31); the transfer mechanism (2) is provided with two sets of loading mechanisms (4) and unloading mechanisms (5) which are respectively arranged at an angle therebetween; the rotating seat (32) is used to drive the transfer seats (21) of the loading mechanism (4) and the unloading mechanism (5) to slide to the feeding station (12) and the transfer station (11) respectively, or to drive the transfer seats (21) of the loading mechanism (4) and the unloading mechanism (5) to slide to the transfer station (11) and the discharging station (13) respectively.

3. A workpiece transfer device according to claim 2, characterized in that: The transfer guide rail (1) is configured to be semicircular, the feeding mechanism (7) and the discharging mechanism (8) extend forward and backward to correspond to the two ends of the transfer guide rail (1), the bottom of the transfer seat (21) is limited by a plurality of horizontally rotating limiting rollers (211) and is clamped on the outer walls of both sides of the transfer guide rail (1), the transfer station (11) is located in the middle of the transfer guide rail (1), and the feeding station (12) and the discharging station (13) are respectively located at the two ends of the transfer guide rail (1).

4. A workpiece transfer device according to claim 2, characterized in that: The feeding mechanism (7) and the discharging mechanism (8) respectively include a feeding conveyor line (71) and a discharging conveyor line (81) that are symmetrical on both sides. The discharging end of the feeding conveyor line (71) and the feeding end of the discharging conveyor line (81) are respectively provided with a feeding device (72) and a discharging device (82) of the same structure. The feeding device (72) includes a plurality of turntables (721) that are driven to rotate by a self-rotating driving device (722) and are arranged at intervals up and down, and an arc-shaped guide rail (723) located below the outer sides of the plurality of turntables (721) and having both ends connected to the feeding station (12) and the feeding conveyor line (71). ), a plurality of driving grooves (7211) are provided at intervals on the outer periphery of the turntable (721), and an arc-shaped baffle (724) is provided on the upper outer side of the arc-shaped guide rail (723) at intervals corresponding to the notches of the driving grooves (7211); after the transfer seat (21) of the loading mechanism (4) slides to the feeding station (12) and the feeding conveyor line (71) feeds the workpiece into the driving groove (7211), the driving groove (7211) of the feeding device (72) rotates to drive the workpiece blank to slide along the arc of the arc-shaped guide rail (723) to the transfer seat (21) of the loading mechanism (4).

5. A workpiece transfer device according to claim 4, characterized in that: The tops of the transfer seats (21) of the loading mechanism (4) and the unloading mechanism (5) are both recessed and provided with a limiting groove (212) with an opening on one side for docking with the arc-shaped guide rail (723). The limiting grooves (212) of the loading mechanism (4) and the unloading mechanism (5) are arranged in an arc shape and are respectively adapted to the arc-shaped extension directions of the arc-shaped guide rails (723) of the feeding device (72) and the discharging device (82). The limiting structure includes the limiting groove (212); The driving groove (7211) of the feeding device (72) rotates to drive the workpiece blank on the feeding conveyor line (71) to slide along the arc of the arc guide rail (723) to the limiting groove (212) of the loading mechanism (4), and the driving groove (7211) of the discharging device (82) rotates to drive the finished workpiece in the limiting groove (212) of the unloading mechanism (5) to slide along the arc of the arc guide rail (723) to the discharging conveyor line (81).

6. A workpiece transfer device according to claim 5, characterized in that: There are two clamping members (241), and the two driving ends of the clamping drive device (242) slide through the drive seat (243) through a plurality of slide rods (244) and are connected to the upper ends of the two clamping members (241). The slide rods (244) are provided with a buffer spring (245) that is installed between the drive seat (243) and the clamping member (241).

7. A workpiece transfer device according to claim 6, characterized in that: The plurality of rotating disks (721) correspond to the lower portion of the workpiece, and the two clamping members (241) correspond to the upper portion of the workpiece.

8. A workpiece transfer device according to claim 7, characterized in that: The extrusion piece (248) is in the shape of a transversely extending plate, and the opposite sides of the two extrusion pieces (248) are recessed to form an extrusion portion (2481) corresponding to the upper outer wall of the airbag (247), and a flexible layer is provided on both extrusion portions (2481).

9. The workpiece transfer device according to claim 2, characterized in that: The upper driving member (23) and the lower driving member (22) are spaced apart and arranged in parallel with each other. A lifting seat (25) is provided between the upper driving member (23) and the lower driving member (22). One end of the lifting seat (25) extends laterally to form a sliding sleeve (251) for slidingly inserting the upper driving member (23) laterally, and the other end is folded downward and connected to the top of the lower driving member (22) by sliding up and down. The lifting drive device is provided at the top of the lower driving member (22) and is used to drive the lifting seat (25) to move up and down. The telescopic drive device is provided in the sliding sleeve (251) and is used to drive the upper driving member (23) to move laterally.

10. The workpiece transfer device according to claim 9, characterized in that: The transfer drive device (3) further comprises a base (33) for rotatably mounting the rotating seat (32); the bottom middle portion of the lower driving member (22) is rollingly supported on the base (33) via a supporting roller (221); a supporting cylinder (222) is provided at the top middle portion thereof and is vertically coaxially arranged with the supporting roller (221); a sleeve (231) is provided at the bottom middle portion of the lower driving member (22) and is provided with an upper and lower sliding sleeve (251) disposed on the outside of the supporting cylinder (222); a supporting spring is provided in the supporting cylinder (222) with its upper and lower ends disposed between the sliding sleeve (251) and the lower driving member (22).

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