CN222740922U - Workpiece turning mechanism - Google Patents

Abstract

The utility model provides a turnover mechanism for a workpiece, and belongs to the technical field of machinery. It has solved the not enough problem of suitability. The device comprises a support provided with a mounting plate arranged vertically, wherein a first paw component and a second paw component are arranged on the front side of the mounting plate respectively, a sliding frame is connected to the front side of the mounting plate in a sliding mode along the left-right direction, the first paw component is connected to the sliding frame, the second paw component is located on the right side of the first paw component, a first cylinder connected with the sliding frame is connected to a piston rod on the support, a movable groove which is in a strip shape is formed in the left-right direction of the mounting plate, a limiting block is arranged on the front side of the mounting plate in a propping mode, a connecting block is arranged on the rear side of the mounting plate in a propping mode, the limiting block is fixedly connected with the connecting block through a fastening screw, the rod portion of the fastening screw penetrates through the limiting block and the movable groove and is in the connecting block in a threaded mode, the sliding frame is integrally fixedly connected with a blocking portion or fixedly connected with the blocking portion, and the limiting block is located on a movable path which slides along with the sliding frame to the right. It has the advantages of wide applicability, high adjustment flexibility, etc.

Description

Turnover mechanism for workpiece

Technical Field

The utility model belongs to the technical field of machinery, and relates to a turnover mechanism for a workpiece.

Background

In existing machining, the situation that both ends of a workpiece need to be machined is often encountered. In order to realize automatic turning of the workpiece in the machine so as to improve the processing efficiency, a turnover mechanism is required to be arranged. For example, patent application number 201310421675.9 discloses an automatic production line turning device, it includes the bottom plate, the front and back slide mechanism, control slide mechanism, make tilting mechanism and right tilting mechanism, front and back slide mechanism is including front and back slide guiding mechanism, front and back slide actuating mechanism and the carriage that has vertical riser, the front and back slide guiding mechanism slip direction is horizontal installation around on the bottom plate, the support frame supports the direction by front and back slide guiding mechanism, front and back slide actuating mechanism is connected with the support frame, control slide guiding mechanism includes horizontal slide, control slide guiding mechanism and control slide actuating mechanism, control slide guiding mechanism slip direction is control transversely to be installed on the riser of support frame, control slide guiding mechanism supports the direction by control slide guiding mechanism, control slide actuating mechanism is connected with horizontal slide, control slide actuating mechanism and control slide tilting mechanism all including work piece fixture and tilting mechanism, tilting mechanism includes tilting plate and rotary driving mechanism, a connecting axle is connected at tilting plate both ends respectively, two connecting axle axial lead coaxial are vertical setting, the connecting axle realizes supporting installation through the bearing, rotary driving mechanism is connected with one of them connecting axle, work piece fixture installs in the front and is located on the tilting mechanism and control centre piece fixture, control fixture is located the work piece fixture when the front and control fixture is installed to the tilting mechanism, control fixture is located on the side of the relative tilting mechanism, the work piece fixture, control fixture is located on the centre piece fixture. Through the arrangement, automatic turning and overturning in the machine of the workpiece can be realized, and the processing efficiency is improved.

The left-right sliding guide mechanism is of a guide rail pair structure and comprises two second guide rails and a second sliding block, wherein the two second guide rails are arranged at a certain distance from top to bottom, the second sliding block is slidably mounted on the second guide rails, the second guide rails are fixedly mounted on a vertical plate of the support frame, the second sliding block is connected with the transverse sliding plate, the left-right sliding driving mechanism is a second air cylinder, a cylinder body of the second air cylinder is fixedly mounted on the vertical plate of the support frame, a piston rod of the second air cylinder is fixedly connected with the transverse sliding plate, and left-right sliding is realized through extension or retraction of the piston rod of the second air cylinder. However, the stroke of the cylinder is not adjustable, so that the sliding distance of the transverse sliding plate is not adjustable, and the problem of insufficient applicability in actual use exists.

Disclosure of utility model

The utility model aims to solve the problems in the prior art, and provides a workpiece overturning mechanism which solves the problem of insufficient applicability.

The aim of the utility model can be achieved by the following technical scheme:

The utility model provides a tilting mechanism of work piece, includes the support, the support have the mounting panel along vertical setting, the mounting panel front side is provided with first hand claw subassembly and second hand claw subassembly respectively, mounting panel front side along controlling direction sliding connection has the carriage, first hand claw subassembly is connected on the carriage and second hand claw subassembly is located the right side of first hand claw subassembly, be connected with the first cylinder that piston rod and carriage are connected on the support, its characterized in that, the mounting panel have along controlling the direction setting and be rectangular type movable slot, the front side of mounting panel is supported and is provided with the stopper and its rear side is supported and is provided with the connecting block, the stopper links firmly through fastening screw with the connecting block, fastening screw pole passes stopper and movable slot and threaded connection in the connecting block, the integrative fixedly connected with of carriage or fixedly connected with stop, the stopper is located the stop along with the carriage on the movable path of sliding to the right.

When the fixing device is used, the fastening screw is screwed, so that the limiting block and the connecting block are firmly clamped on the front side and the rear side of the mounting plate, and the limiting block, the mounting plate and the connecting block are fixed together. The limiting block is located under the moving path of the blocking portion sliding along with the sliding frame to the right, which means that the maximum sliding distance of the sliding frame to the right can be limited by abutting the limiting block and the blocking portion. When the maximum sliding distance of the sliding frame towards the right is required to be reduced, the fastening screw is only required to be unscrewed, then the limiting block is left adjusted to a required position in a mode that the fastening screw moves along the movable groove, and then the fastening screw is screwed again. Through the arrangement, the sliding distance of the sliding frame is adjusted, so that the turnover mechanism can be used for workpieces with different lengths generally, and the applicability is improved. In addition, the structure can realize stepless adjustment, can be adjusted to any position, and has higher adjustment flexibility.

In the turnover mechanism of the workpiece, two pins are further connected between the limiting block and the connecting block, the two pins are located on two sides of the fastening screw and penetrate through the movable groove, two ends of the two pins are inserted into the limiting block and the connecting block respectively, the pins are fixedly connected with the connecting block, and the pins are in clearance fit with the limiting block.

The two pins are positioned at two sides of the fastening screw and also penetrate through the movable groove, so that the connecting block and the mounting plate can be circumferentially fixed, and the mounting plate can be clamped or loosened by driving the connecting block through threads when the fastening screw is screwed.

In addition, when the blocking part abuts against the limiting block, the sliding frame can generate thrust to the limiting block through the blocking part. In general, the gap between the fastening screw and the stopper (the fastening screw only passes through the stopper) is relatively large, and the existence of the gap causes the stopper to be possibly displaced relative to the connecting block when being stressed, so that the bolt is easily subjected to shearing force. By arranging the pins, the gap between the pins and the limiting block is obviously smaller than the gap between the fastening screw and the limiting block because the pins are in clearance fit, so that the two pins can be used for replacing the fastening screw to bear shearing force, and the fastening screw is protected.

In the above workpiece turnover mechanism, the pins are spring pins, the limiting block is provided with two first assembly holes, the connecting block is provided with two second assembly holes, two ends of one pin are respectively inserted into one first assembly hole and one assembly Kong Erna, two ends of the other pin are respectively inserted into the other first assembly hole and the other second assembly hole, and the outer walls of the two pins are respectively in tight fit with the wall of the corresponding second assembly hole.

In the turnover mechanism for the workpiece, the blocking part is in a block shape, the right side surface of the blocking part is a plane, and the left side surface of the limiting block is a plane.

When the blocking part abuts against the limiting block, the blocking part and the limiting block are in surface contact, so that the reliability of limiting the sliding frame can be ensured.

In the turnover mechanism of the workpiece, the upper side and the lower side of the first paw assembly are respectively provided with the first connecting shafts which are arranged vertically, the two first connecting shafts are respectively arranged on the sliding frame in a rotating mode, the sliding frame is also connected with the second air cylinder, one first connecting shaft is fixedly connected with the first swinging block, the piston rod of the second air cylinder is connected with the first swinging block, the sliding frame is also connected with the two first limit screws in a threaded mode along the left-right direction, the two first limit screws are parallel and are identical in height, and the first swinging block can swing from leaning against one first limit screw to leaning against the other first limit screw.

The swing angle of the first swing block is limited by two first limit screws, so that the machining precision can be ensured. Simultaneously, two first stop screws are threaded connection on the carriage, namely can finely tune the whole swing angle of first swing piece through the rotation of first stop screw, further ensure machining precision.

In the turnover mechanism of the workpiece, the upper side and the lower side of the second paw assembly are respectively provided with the second connecting shafts which are arranged vertically, the two second connecting shafts are respectively arranged on the support in a rotating mode, the support is further connected with a third air cylinder, one second connecting shaft is fixedly connected with a second swinging block, a piston rod of the third air cylinder is connected with the second swinging block, the support is further provided with two second limit screws in a threaded mode along the left-right direction, the two second limit screws are parallel and are identical in height, and the second swinging block can swing from abutting against one second limit screw to abutting against the other second limit screw.

The swing angle of the second swing block is limited by two second limit screws, so that the machining precision can be ensured. Simultaneously, two second stop screws are threaded connection on the support, namely can finely tune the whole swing angle of second swing piece through the rotation of second stop screw, further ensure machining precision.

Compared with the prior art, the turnover mechanism of the workpiece realizes the adjustment of the sliding distance of the sliding frame by arranging the strip-shaped movable groove on the mounting plate and combining the limiting block and the blocking part, thereby being capable of commonly using workpieces with different lengths and improving the applicability. Furthermore, the structure can realize stepless adjustment and can be adjusted to any position.

Drawings

Fig. 1 is a schematic view of the turnover mechanism of the present work piece.

Fig. 2 is another angular schematic view of the tilting mechanism of the present work piece.

Fig. 3 is another angular schematic view of the turnover mechanism of the present work piece.

Fig. 4 is a schematic view of the tilting mechanism of the present work piece with the second jaw assembly removed.

Fig. 5 is a schematic cross-sectional view between the stopper and the mounting plate.

Fig. 6 is a schematic view at a carriage.

Fig. 7 is another angular schematic view at the carriage.

FIG. 8 is a schematic view of the first and second finger assemblies.

In the figure, 1, a bracket, 1a, a mounting plate, 1a1, a movable groove, 2, a first claw assembly, 2a, a first connecting shaft, 2b, a first mounting plate, 2c, a first clamping jaw, 3, a second claw assembly, 3a, a second connecting shaft, 3b, a second mounting plate, 3c, a second clamping jaw, 4, a sliding frame, 5, a guide rail, 6, a sliding block, 7, a first cylinder, 8, a limiting block, 8a, a first assembly hole, 9, a connecting block, 9a, a second assembly hole, 10, a fastening screw, 11, a blocking part, 12, a pin, 13, a second cylinder, 14, a first swinging block, 15, a first limiting screw, 16, a third cylinder, 17, a second swinging block, 18 and a second limiting screw.

Detailed Description

The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.

As shown in fig. 1-4, the turnover mechanism for the workpiece comprises a bracket 1, wherein the bracket 1 is provided with a mounting plate 1a which is arranged vertically, a first gripper assembly 2 and a second gripper assembly 3 are respectively arranged on the front side of the mounting plate 1a, a sliding frame 4 is slidingly connected on the front side of the mounting plate 1a along the left-right direction, the first gripper assembly 2 is connected on the sliding frame 4, and the second gripper assembly 3 is positioned on the right side of the first gripper assembly 2. Wherein, the front side parallel arrangement of mounting panel 1a has two guide rails 5, all slides on two guide rails 5 and is provided with slider 6, and carriage 4 fixed connection is in the front side of two sliders 6, is connected with first cylinder 7 on the support 1, and the piston rod tip of first cylinder 7 is connected with carriage 4, can drive carriage 4 towards second paw subassembly 3 slip through stretching out of the piston rod of first cylinder 7, then can drive carriage 4 towards second paw subassembly 3 through the retract of the piston rod of first cylinder 7 and keep away from.

As shown in fig. 1, 4, 5 and 7, the mounting plate 1a has a movable slot 1a1 arranged in a strip shape along the left-right direction, a stopper 8 is arranged on the front side of the mounting plate 1a in an abutting manner, a connecting block 9 is arranged on the rear side of the mounting plate, the stopper 8 is fixedly connected with the connecting block 9 through a fastening screw 10, the rod part of the fastening screw 10 penetrates through the stopper 8 and the movable slot 1a1 and is in threaded connection with the connecting block 9, a blocking part 11 is integrally fixedly connected with the sliding frame 4, and the stopper 8 is positioned on a movable path of the blocking part 11 sliding along with the sliding frame 4 to the right. The blocking part 11 is in a block shape, the right side surface of the blocking part 11 is a plane, and the left side surface of the limiting block 8 is a plane. Further, two pins 12 are further connected between the limiting block 8 and the connecting block 9, the two pins 12 are located on two sides of the fastening screw 10, the two pins 12 penetrate through the movable groove 1a1, two ends of the two pins 12 are respectively inserted into the limiting block 8 and the connecting block 9, the pins 12 are fixedly connected with the connecting block 9, and the pins 12 are in clearance fit with the limiting block 8. In this embodiment, the pins 12 are specifically spring pins, the stopper 8 has two first assembly holes 8a, the connecting block 9 has two second assembly holes 9a, two ends of one pin 12 are respectively inserted into one of the first assembly holes 8a and one of the second assembly holes 9a, two ends of the other pin 12 are respectively inserted into the other first assembly hole 8a and the other second assembly hole 9a, and outer walls of the two pins 12 are respectively in tight fit with hole walls of the corresponding second assembly holes 9 a.

Specifically, as shown in fig. 2, 6, 7 and 8, the upper and lower sides of the first gripper assembly 2 are respectively provided with a first connecting shaft 2a arranged vertically, the two first connecting shafts 2a are respectively arranged on the sliding frame 4 in a rotating manner, the sliding frame 4 is also connected with a second air cylinder 13, one first connecting shaft 2a is fixedly connected with a first swinging block 14, a piston rod of the second air cylinder 13 is connected with the first swinging block 14, and the piston rod of the second air cylinder 13 stretches out or retracts to drive the first swinging block 14 to swing, so that the first gripper assembly 2 is turned over, and the first gripper assembly 2 is switched between a forward arrangement and a rightward arrangement. The first claw assembly 2 comprises a first mounting plate 2b and a plurality of first clamping claws 2c which are connected to the first mounting plate 2b in a sliding manner and can approach the central line of the first mounting plate 2b, and two first connecting shafts 2a are respectively and fixedly connected to the upper side and the lower side of the first mounting plate 2 b. The sliding frame 4 is also connected with two first limit screws 15 along the left-right direction in a threaded manner, the two first limit screws 15 are parallel and have the same height, and the first swinging block 14 can swing from abutting against one first limit screw 15 to abutting against the other first limit screw 15. The swinging angle of the first swinging block 14 is limited by two first limit screws 15, so that the machining precision can be ensured. Meanwhile, the two first limit screws 15 are both in threaded connection with the sliding frame 4, that is to say, the whole swinging angle of the first swinging block 14 can be finely adjusted by rotating the first limit screws 15.

As shown in fig. 3 and 8, the upper and lower sides of the second gripper assembly 3 are respectively provided with a second connecting shaft 3a which is vertically arranged, the two second connecting shafts 3a are respectively and rotatably arranged on the bracket 1, the bracket 1 is also connected with a third air cylinder 16, one second connecting shaft 3a is fixedly connected with a second swinging block 17, a piston rod of the third air cylinder 16 is connected with the second swinging block 17, and the second swinging block 17 can be driven to swing by extending or retracting the piston rod of the third air cylinder 16, so that the second gripper assembly 3 can be turned over, and the second gripper assembly 3 can be switched between a forward arrangement and a leftward arrangement. The second claw assembly 3 comprises a second mounting plate 3b and a plurality of second clamping claws 3c which are connected to the second mounting plate 3b in a sliding manner and can approach the center line of the second mounting plate 3b, and two second connecting shafts 3a are respectively and fixedly connected to the upper side and the lower side of the second mounting plate 3 b. The combination of the first mounting plate 2b and the first clamping jaws 2c and the combination of the second mounting plate 3b and the second clamping jaws are actually the conventional hydraulic chuck structure. The bracket 1 is also connected with two second limit screws 18 along the left-right direction in a threaded manner, the two second limit screws 18 are parallel and have the same height, and the second swinging block 17 can swing from abutting against one second limit screw 18 to abutting against the other second limit screw 18. The swinging angle of the second swinging block 17 is limited by two second limit screws 18, so that the machining precision can be ensured. Meanwhile, the two second limit screws 18 are both in threaded connection with the bracket 1, that is to say, the whole swinging angle of the second swinging block 17 can be finely adjusted by rotating the second limit screws 18.

In the initial state, the first gripper unit 2 and the second gripper unit 3 are both in a state of being disposed forward (in which the piston rod of the second cylinder 13 and the piston rod of the third cylinder 16 are both in an extended state), and the carriage 4 is located at a position far from the second gripper unit 3 (in which the piston rod of the first cylinder 7 is in a retracted state). After the workpiece is machined, the machined workpiece is clamped by the truss manipulator and placed on the first gripper assembly 2 to be clamped, and then the piston rod of the second air cylinder 13 and the piston rod of the third air cylinder 16 retract simultaneously, so that the first gripper assembly 2 is switched to the right state and the second gripper assembly 3 is switched to the left state, and the first gripper assembly 2 and the second gripper assembly 3 are opposite. Then, the piston rod of the first cylinder 7 extends to drive the sliding frame 4 to slide, so that the workpiece clamped on the first gripper assembly 2 is conveyed into the second gripper assembly 3, and then the second gripper assembly 3 is controlled to clamp the workpiece and the first gripper assembly 2 is controlled to unclamp the workpiece. Finally, the piston rod of the first air cylinder 7 retracts and drives the sliding frame 4 to reset leftwards, and then the piston rod of the second air cylinder 13 and the piston rod of the third air cylinder 16 extend simultaneously, so that the first gripper assembly 2 and the second gripper assembly 3 are switched back to the forward state, and therefore the workpiece turning work is completed and the second gripper assembly 3 waits for the manipulator to grasp.

The turnover mechanism of the workpiece can adjust the maximum sliding distance of the sliding frame 4 so as to adapt to workpieces with different lengths. Specifically, when the device is used, the fastening screw 10 is screwed, so that the limiting block 8 and the connecting block 9 are firmly clamped on the front side and the rear side of the mounting plate 1a, and the limiting block 8, the mounting plate 1a and the connecting block 9 are fixed together. The stopper 8 is located under the movement path of the stopper 11 sliding rightward with the carriage 4, meaning that the maximum sliding distance of the carriage 4 rightward can be restricted by abutment of the stopper 8 with the stopper 11. When the maximum sliding distance of the sliding frame 4 to the right needs to be reduced, the fastening screw 10 is only required to be unscrewed, then the limiting block 8 is adjusted to the required position to the left in a mode that the fastening screw 10 moves along the movable groove 1a1, and then the fastening screw 10 is screwed again. Through the arrangement, the adjustment of the sliding distance of the sliding frame 4 is realized, so that the turnover mechanism can be used for workpieces with different lengths, and the applicability is improved. Furthermore, the structure can realize stepless adjustment and can be adjusted to any position.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.

Claims (6)

1. The utility model provides a tilting mechanism of work piece, includes support (1), support (1) have mounting panel (1 a) along vertical setting, mounting panel (1 a) front side is provided with first hand claw subassembly (2) and second hand claw subassembly (3) respectively, mounting panel (1 a) front side is provided with carriage (4) along left and right direction sliding connection, first hand claw subassembly (2) are connected on carriage (4) and second hand claw subassembly (3) are located the right side of first hand claw subassembly (2), be connected with first cylinder (7) that piston rod and carriage (4) are connected on support (1), characterized in that, mounting panel (1 a) have along left and right direction setting be rectangular type movable groove (1 a 1), the front side of mounting panel (1 a) is supported and is provided with stopper (8) and its rear side is supported and is provided with connecting block (9), stopper (8) and connecting block (9) are fixed through fastening screw (10), fastening screw (10) pole portion passes stopper (8) and movable groove (1 a 1) and threaded connection in (9), the integrative carriage (4) have blocked the slider (11) along with the fixed connection of stopper (4) portion that blocks.

2. The turnover mechanism of workpieces according to claim 1, wherein two pins (12) are further connected between the limiting block (8) and the connecting block (9), the two pins (12) are located on two sides of the fastening screw (10) and penetrate through the movable groove (1 a 1), two ends of the two pins (12) are inserted into the limiting block (8) and the connecting block (9) respectively, the pins (12) are fixedly connected with the connecting block (9), and the pins (12) are in clearance fit with the limiting block (8).

3. The turnover mechanism of workpiece according to claim 2, characterized in that the pin (12) is a spring pin, the limiting block (8) is provided with two first assembly holes (8 a), the connecting block (9) is provided with two second assembly holes (9 a), two ends of one pin (12) are respectively inserted into one first assembly hole (8 a) and one second assembly hole (9 a), two ends of the other pin (12) are respectively inserted into the other first assembly hole (8 a) and the other second assembly hole (9 a), and the outer walls of the two pins (12) are respectively in tight fit with the hole walls of the corresponding second assembly holes (9 a).

4. A turnover mechanism for a workpiece according to claim 1, 2 or 3, characterized in that the blocking part (11) is in a block shape, the right side surface of the blocking part (11) is a plane, and the left side surface of the limiting block (8) is a plane.

5. The turnover mechanism of a workpiece according to claim 1, 2 or 3, wherein the upper side and the lower side of the first claw assembly (2) are respectively provided with a first connecting shaft (2 a) which is arranged vertically, the two first connecting shafts (2 a) are respectively arranged on the sliding frame (4) in a rotating mode, the sliding frame (4) is also connected with a second air cylinder (13), one first connecting shaft (2 a) is fixedly connected with a first swinging block (14), a piston rod of the second air cylinder (13) is connected with the first swinging block (14), the sliding frame (4) is also connected with two first limit screws (15) in a threaded mode along the left-right direction, the two first limit screws (15) are parallel, the heights of the two first limit screws are the same, and the first swinging block (14) can swing from abutting against one first limit screw (15) to abutting against the other first limit screw (15).

6. The turnover mechanism of a workpiece according to claim 1, 2 or 3, wherein the upper side and the lower side of the second claw assembly (3) are respectively provided with a second connecting shaft (3 a) which is arranged vertically, the two second connecting shafts (3 a) are respectively arranged on the bracket (1) in a rotating mode, the bracket (1) is further connected with a third air cylinder (16), one second connecting shaft (3 a) is fixedly connected with a second swinging block (17), a piston rod of the third air cylinder (16) is connected with the second swinging block (17), two second limiting screws (18) are further connected with the bracket (1) in a threaded mode along the left-right direction, the two second limiting screws (18) are parallel, the heights of the two second limiting screws are the same, and the second swinging block (17) can swing against one second limiting screw (18) to the other second limiting screw (18).