Workpiece feeding device

Abstract

The workpiece feeding device comprises a material receiving mechanism, a conveying mechanism and an overturning mechanism, the material receiving mechanism is used for receiving workpieces, the conveying mechanism is used for driving the material receiving mechanism to move back and forth between a first station and a second station, and the overturning mechanism is used for overturning the workpieces on the material receiving mechanism; the first station is equivalent to an initial feeding and discharging station, and a workpiece can enter the grinding production line at the first station. The second station is equivalent to a preparation station, the first-stage grinding is completed, the workpiece returns to the second station from the grinding equipment, and the turnover mechanism can turn over the workpiece, so that the angle and the orientation of the workpiece are changed, the workpiece can be ground in another posture, and it is guaranteed that the surface of the workpiece is comprehensively ground; according to the workpiece feeding device, the receiving mechanism is matched with the conveying mechanism, receiving and transferring of the workpiece can be rapidly achieved, the overturning mechanism is matched, the posture of the workpiece in the grinding process can be changed, and therefore the grinding efficiency of the workpiece is improved, and the grinding uniformity of the workpiece is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of workpiece conveying, and particularly relates to a workpiece feeding device. BACKGROUND

[0002] When large workpieces are ground, a crane, a robot or other handling mechanism is used to realize the transfer of the workpieces, so that the workpieces can enter the grinding equipment from the feeding station. The grinding equipment for processing large workpieces is huge in size, and the round trip of the handling mechanism for cooperation is also very long, which results in large occupation of the production line and low feeding and discharging efficiency.

[0003] Meanwhile, in the traditional grinding equipment, the large workpieces are often ground in a fixed position and in a single direction, which makes the grinding position of the abrasive on the workpiece fixed and uneven grinding prone to occur, thereby affecting the quality and performance of the workpiece. SUMMARY

[0004] The present application aims at overcoming the deficiencies in the prior art and providing a workpiece feeding device.

[0005] To achieve the above technical purpose, the present application provides a workpiece feeding device, which comprises: a receiving mechanism for receiving workpieces; a conveying mechanism for driving the receiving mechanism to reciprocate between a first station and a second station; a turnover mechanism for turning over the workpieces on the receiving mechanism; when the receiving mechanism is located at the first station, the workpieces to be ground can be received; when the receiving mechanism is located at the second station, the turnover mechanism can contact the workpieces on the receiving mechanism and turn over the workpieces.

[0006] Further, the receiving mechanism comprises: a support slidingly arranged on the conveying mechanism and capable of moving under the driving of the conveying mechanism; a workpiece placing table arranged on the support for placing the workpieces; and a fixing assembly for fixing the workpieces on the workpiece placing table, so as to avoid displacement of the workpieces on the workpiece placing table.

[0007] Further, the fixing assembly comprises: four groups of abutting plates distributed in four corners on the workpiece placing table; and a fixing driving structure for driving the four groups of abutting plates to move closer to or away from each other; when the four groups of abutting plates move towards each other, the four groups of abutting plates can clamp the workpieces on the workpiece placing table from four sides; when the four groups of abutting plates move away from each other, the four groups of abutting plates can release the workpieces on the workpiece placing table, so as to turn over the workpieces by the turnover mechanism.

[0008] Further, the main body of the workpiece placing table is arranged in a square shape, four groups of sliding grooves are arranged on the workpiece placing table, any one group of sliding grooves is arranged to extend from a corner of the workpiece placing table towards the center of the workpiece placing table, the four groups of sliding grooves are arranged in a circular array with the center of the workpiece placing table as the center, and any one group of abutting plates is slidingly arranged in any one group of sliding grooves.

[0009] Further, the resisting fence comprises: a mounting slide plate, which is slidingly arranged in a sliding groove and can move towards or away from the center of the material table under the driving of a fixed driving structure; and a contact top plate, which is arranged on the mounting slide plate and used for contacting the workpiece; wherein the position of the contact top plate on the mounting slide plate is adjustable; the position of the contact top plate on the mounting slide plate is adjusted so as to fix the assembly to clamp workpieces of different specifications.

[0010] Further, the fixed driving structure comprises: a rotating center mounting plate, which is rotatably arranged at the center of the material table and arranged on the back of the material table; four movable connecting rods, one end of any movable connecting rod being rotatably connected with the rotating center mounting plate and the other end being rotatably connected with one resisting fence, the four movable connecting rods being arranged in a circular array with the center of the material table as the center; and a rotating driving member, which is connected with one group of resisting fences or two groups of resisting fences arranged on the same straight line and used for driving the resisting fences to move along the sliding groove; when the rotating driving member drives the resisting fences connected therewith to move, the four movable connecting rods can move synchronously through the self-rotation linkage of the rotating center mounting plate; under the guidance of the sliding groove, when the rotating center mounting plate rotates forward, the four groups of resisting fences move towards each other, and when the rotating center mounting plate rotates reversely, the four groups of resisting fences move away from each other.

[0011] Further, the conveying mechanism comprises: two slide rails, which are arranged side by side, any slide rail being arranged to extend from the first work station to the second work station, the material receiving mechanism being arranged on the two slide rails and being slidingly connected with the slide rails through a sliding block; a rack, which extends in the same direction as the slide rails and is arranged on one side of the slide rails; a gear, which is engaged with the rack; and a driving motor, which is fixedly arranged on the material receiving mechanism and connected with the gear and can drive the gear to rotate.

[0012] Further, the overturning mechanism comprises: a clamp, which is used for grabbing the workpiece on the material receiving mechanism; a lifting driving assembly, which is used for driving the clamp to move up and down; and an overturning driving assembly, which is used for driving the clamp to rotate and change direction.

[0013] Further, the clamp comprises: two groups of clamping plates, which are oppositely arranged along the left-right direction; a mounting bracket, which is provided with a clamping guide rail extending along the left-right direction, the two groups of clamping plates being slidingly arranged on the clamping guide rail; a linkage gear, which is rotatably arranged on the mounting bracket;

[0014] two groups of linkage racks, the upper end of the linkage gear being engaged with one group of linkage racks and the lower end of the linkage gear being engaged with the other group of linkage racks; when the linkage gear rotates forward, the two groups of linkage racks translate towards each other, and the two groups of clamping plates move close to each other to tightly hold the workpiece; and when the linkage gear rotates reversely, the two groups of linkage racks translate away from each other, and the two groups of clamping plates move away from each other to release the workpiece.

[0015] Furthermore, the lifting drive assembly includes a lifting guide rail and a lifting drive structure, and the flipping mechanism includes a flipping support and a flipping mounting plate. The lifting guide rail is fixedly mounted on the flipping support and extends in the vertical direction. The flipping mounting plate is slidably mounted on the lifting guide rail, and the lifting drive structure is connected to the flipping mounting plate. The flipping drive assembly includes a flipping drive component, a drive gear, and a driven gear. The flipping drive component is mounted on the flipping support and connected to the drive gear. The drive gear can rotate under the drive of the flipping drive component. The driven gear is rotatably mounted on the flipping mounting plate and connected to the fixture. The drive gear meshes with the driven gear. After the fixture grabs the workpiece, the lifting drive structure drives the flipping mounting plate to rise along the lifting guide rail so that the workpiece is away from the receiving mechanism. When flipping the workpiece, the flipping drive component drives the drive gear to rotate, the drive gear drives the driven gear to rotate, and the driven gear drives the flipping mounting plate and the fixture to rotate.

[0016] This application provides a workpiece loading device, including a receiving mechanism, a conveying mechanism, and a flipping mechanism. The receiving mechanism receives the workpiece, the conveying mechanism drives the receiving mechanism to move back and forth between a first station and a second station, and the flipping mechanism flips the workpiece on the receiving mechanism. The first station is equivalent to the initial loading and unloading station, where the workpiece can enter the grinding production line. After completing the grinding operation, the workpiece can return to the first station along the same path with the cooperation of the receiving mechanism and the conveying mechanism, and then leave the grinding production line. The second station is equivalent to the preparatory station, where the workpiece stops before formally entering the grinding equipment to confirm its position and status. After the first stage of grinding is completed, the workpiece returns from the grinding equipment to the second station. The flipping mechanism can flip the workpiece, thereby changing the angle and orientation of the workpiece so that it can enter the grinding equipment in a different posture and receive grinding, thus ensuring that the workpiece surface is fully and uniformly ground. The workpiece loading device provided by this application, through the receiving mechanism and the conveying mechanism, can quickly realize the receiving and transfer of workpieces. With the flipping mechanism, it can change the posture of the workpiece when receiving grinding, thereby improving the grinding efficiency and the grinding uniformity of the workpiece. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a workpiece feeding device provided in this application;

[0018] Figure 2 for Figure 1 Enlarged view of the inner structure of the center circle;

[0019] Figure 3 for Figure 1 The diagram shows the structure of the workpiece loading device after omitting the flipping mechanism.

[0020] Figure 4 for Figure 1Structure diagram of the back of the material receiving mechanism of the workpiece loading device shown;

[0021] Figure 5 For Figure 1 Structure diagram of the turnover mechanism of the workpiece loading device shown. DETAILED DESCRIPTION

[0022] To make the above objectives, features and advantages of the present application more apparent, a detailed description of the specific embodiments of the present application will be given below with reference to the accompanying drawings. In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0023] The present application provides a workpiece loading device, comprising: a material receiving mechanism 10 for receiving workpieces; a conveying mechanism 20 for driving the material receiving mechanism 10 to and from a first station and a second station; a turnover mechanism 30 for turning over the workpieces on the material receiving mechanism 10; when the material receiving mechanism 10 is located at the first station, it can receive workpieces to be ground; when the material receiving mechanism 10 is located at the second station, the turnover mechanism 30 can contact the workpieces on the material receiving mechanism 10 and turn them over.

[0024] Specifically refer to Figure 1 In the illustrated embodiment, the conveying mechanism 20 extends along a straight line from the first station to the second station. When the material receiving mechanism 10 reaches the first station under the drive of the conveying mechanism 20, a worker or a handling device (such as a robot, a crane, etc.) can place the workpieces to be ground on the material receiving mechanism 10. The turnover mechanism 30 is located on one side of the conveying mechanism 20 and faces the second station. After the material receiving mechanism 10 transports the workpieces to the second station under the drive of the conveying mechanism 20, the turnover mechanism 30 can contact the workpieces and turn them over.

[0025] The first station corresponds to the initial loading and unloading station, and the workpieces can enter the grinding production line at the first station; after completing the grinding operation, the workpieces can also return to the first station via the original route under the cooperation of the material receiving mechanism 10 and the conveying mechanism 20, and then leave the grinding production line.

[0026] The second station corresponds to the preparatory station, and the workpieces stay at the preparatory station before formally entering the grinding equipment to confirm their position and state; after completing the first-stage grinding operation, the workpieces return to the second station from the grinding equipment, and the turnover mechanism 30 can turn them over to change the angle and orientation of the workpieces, so that the workpieces enter the grinding equipment in another posture and receive grinding, thereby ensuring that the workpiece surface is fully and uniformly ground.

[0027] In an embodiment, the workpiece is received in a normal posture, and after a preset grinding time, the workpiece is returned to the second station, and the overturning mechanism 30 overturns the workpiece from the normal posture to the upside-down posture; and then the workpiece is received in the grinding device in the upside-down posture. In this way, when the height of the workpiece is large, the top of the workpiece can not be completely covered by the grinding material, and the grinding of the top of the workpiece can be avoided.

[0028] The workpiece loading device provided by the application can quickly realize the receiving and transferring of the workpiece through the cooperation of the receiving mechanism 10 and the conveying mechanism 20, and can change the posture of the workpiece when the workpiece is received for grinding through the cooperation of the overturning mechanism 30, thereby improving the grinding efficiency of the workpiece and improving the grinding uniformity of the workpiece.

[0029] In an embodiment, the receiving mechanism 10 comprises: a support 11, which is slidingly arranged on the conveying mechanism 20 and can move under the driving of the conveying mechanism 20; a workpiece table 12, which is arranged on the support 11 and is used for placing the workpiece; and a fixing assembly, which is used for fixing the workpiece on the workpiece table 12, thereby avoiding the displacement of the workpiece on the workpiece table 12.

[0030] The fixing assembly can be a clamp, which can fix the workpiece on the workpiece table 12 by clamping the workpiece; or the fixing assembly can be an electromagnet, which can fix the workpiece on the workpiece table 12 by attracting the workpiece made of metal after being powered on, and can facilitate the workpiece to leave the workpiece table 12 by being powered off. The specific structure of the fixing assembly is not limited in the application.

[0031] The fixing assembly can not only limit the position of the workpiece on the workpiece table 12, thereby ensuring that the workpiece is located at a uniform preset position when the receiving mechanism 10 reaches the second station, so that the overturning mechanism 30 can accurately grasp the workpiece, but also can fix the workpiece, especially when the receiving mechanism 10 moves, so as to avoid the workpiece from slipping, displacing or even falling off the workpiece table 12.

[0032] In a specific embodiment, the fixing assembly comprises: four sets of abutting plates 13, which are distributed in four corners on the workpiece table 12; and a fixing driving structure 14, which is used for driving the four sets of abutting plates 13 to move close to or away from each other; when the four sets of abutting plates 13 move towards each other and move close to each other, they can cooperate to clamp the workpiece on the workpiece table 12 from four sides; and when the four sets of abutting plates 13 move away from each other, they can release the workpiece on the workpiece table 12, so as to facilitate the overturning mechanism 30 to overturn the workpiece.

[0033] The fixing driving structure 14 can be any driving member that can drive the four sets of abutting plates 13 to move close to or away from each other, such as a pneumatic cylinder or an electric cylinder.

[0034] The four sets of abutting plates 13 can abut against the workpiece from four directions and reliably fix the workpiece between the four sets of abutting plates 13. Especially when the workpiece is a cylindrical structure, the four-point force can effectively ensure the fixing effect.

[0035] In order to fix the workpiece at a fixed point, optionally, the four groups of resisting fences 13 are arranged in a circular array along a center, the four groups of resisting fences 13 are distributed at intervals along a circumferential direction, any group of resisting fences 13 can move towards or away from the center along a radial direction, and the movement strokes of the four groups of resisting fences 13 are consistent.

[0036] Specifically, refer to Figure 1 , Figure 3 and Figure 4 , in the illustrated embodiment, the main body of the workbench 12 is provided in a square shape, four groups of sliding grooves 12a are formed in the workbench 12, any group of sliding grooves 12a is arranged to extend from a corner of the workbench 12 towards the center of the workbench 12, and the four groups of sliding grooves 12a are arranged in a circular array with the center of the workbench 12 as the center; a group of resisting fences 13 is slidingly arranged in any group of sliding grooves 12a.

[0037] The sliding grooves 12a can limit the movement direction of the resisting fences 13, so as to ensure that the four groups of resisting fences 13 can accurately move towards the center of the workbench 12, approach each other, or move away from the center of the workbench 12, and move away from each other.

[0038] In this way, when the movement strokes of the four groups of resisting fences 13 are consistent, the workpiece can be fixed at the center of the workbench 12.

[0039] In an embodiment, the fixing assembly includes four groups of fixing driving structures 14, any resisting fence 13 is connected with a group of fixing driving structures 14 and can independently move under the driving of the corresponding fixing driving structure 14.

[0040] In another embodiment, the fixing driving structure 14 includes: a rotating center mounting plate 14a, which is rotatably arranged at the center of the workbench 12 and is arranged on the back surface of the workbench 12; four movable connecting rods 14b, one end of any movable connecting rod 14b is rotatably connected with the rotating center mounting plate 14a, and the other end is rotatably connected with one resisting fence 13, and the four movable connecting rods 14b are arranged in a circular array with the center of the workbench 12 as the center; a rotating driving member 14c, which is connected with one group of resisting fences 13 or two groups of resisting fences 13 arranged on the same straight line, and is used to drive the resisting fences 13 to move along the sliding groove 12a; when the rotating driving member 14c drives the resisting fences 13 connected therewith to move, the four movable connecting rods 14b can move synchronously through the self-rotation linkage of the rotating center mounting plate 14a; under the guidance of the sliding groove 12a, when the rotating center mounting plate 14a rotates forward, the four groups of resisting fences 13 move towards each other, and when the rotating center mounting plate 14a rotates reversely, the four groups of resisting fences 13 move away from each other.

[0041] Specifically, refer to Figure 4, In the illustrated embodiment, the rotation center mounting plate 14a is arranged at the center of the back of the worktable 12 (i.e. the side of the worktable 12 facing the support 11, the front of the worktable 12 being used to receive workpieces) and is a central-symmetrical figure, which can be regarded as a square. The center of the rotation center mounting plate 14a coincides with the center of the worktable 12, and the rotation shaft is arranged at the center of the two. The rotation center mounting plate 14a is rotatably arranged on the rotation shaft through a bearing.

[0042] With reference to the foregoing Figure 4 , the four movable connecting rods 14b are arranged at the four corners of the rotation center mounting plate 14a. The four movable connecting rods 14b and the rotation center mounting plate 14a constitute a central-symmetrical linkage mechanism.

[0043] When any one of the groups of movable connecting rods 14b is subjected to a force, it is limited by the chute 12a, and the abutting baffle 13 connected to the movable connecting rod 14b must move linearly along the chute 12a. When the abutting baffle 13 moves away from the center of the worktable 12, the movable connecting rod 14b is stretched, driving the rotation center mounting plate 14a to rotate clockwise, which further stretches the other three groups of movable connecting rods 14b and drives the abutting baffles 13 of the other three groups of movable connecting rods 14b to move away from the center of the worktable 12, thereby realizing the synchronous opposite movement of the four groups of abutting baffles 13. Similarly, when any one of the groups of abutting baffles 13 moves toward the center of the worktable 12, the rotation center mounting plate 14a rotates counterclockwise, and under the linkage action of the movable connecting rods 14b and the rotation center mounting plate 14a, the four groups of abutting baffles 13 can move synchronously toward the center of the worktable 12.

[0044] The rotation driving member 14c can be any driving structure capable of driving the abutting baffle 13 to move linearly along the chute 12a, such as a pneumatic cylinder or an electric cylinder.

[0045] Figure 3 In the illustrated embodiment, the back of the worktable 12 is provided with two groups of rotation driving members 14c, which are pneumatic cylinders and are arranged side by side. The additional rotation driving members 14c can enhance the driving force, ensure the driving effect, and improve the response speed.

[0046] Figure 3In the shown embodiment, the fixed end of the rotary driving member 14c is connected with one of the groups of the abutting fence 13, and the movable end is connected with the other group of the abutting fence 13. The two groups of the abutting fence 13 extend in the same direction. At this time, the rotary driving member 14c can provide the driving force for the abutting fence 13, and the abutting fence 13 can provide the installation position for the rotary driving member 14c. The linear arrangement of the two groups of the abutting fence 13 also limits the driving direction of the rotary driving member 14c, and ensures that the extension direction of the piston rod of the rotary driving member 14c is the extension direction of the sliding groove 12a. At the same time, when the rotary driving member 14c works, the piston rod of the rotary driving member 14c is actively extended and retracted, and the recoil force generated thereby makes the cylinder body of the rotary driving member 14c retracted, which is beneficial to the fast and synchronous transmission of the two groups of the abutting fence 13, and further promotes the response action of the linkage mechanism composed of the movable connecting rod 14b and the rotary center installation plate 14a.

[0047] Optionally, the abutting fence 13 comprises: an installation sliding plate 13a, which is slidingly arranged in the sliding groove 12a and can move towards or away from the center of the material table 12 along the sliding groove 12a under the driving of the fixed driving structure 14; and a contact top plate 13b, which is arranged on the installation sliding plate 13a and is used for contacting the workpiece. The position of the contact top plate 13b on the installation sliding plate 13a is adjustable. The position of the contact top plate 13b on the installation sliding plate 13a is adjusted so as to clamp workpieces of different specifications by the fixed assembly.

[0048] Specifically, when fixing a large-specification workpiece, the position of the contact top plate 13b is adjusted to be away from the center of the material table 12; and when fixing a small-specification workpiece, the position of the contact top plate 13b is adjusted to be close to the center of the material table 12.

[0049] In this way, without changing the output stroke of the fixed driving structure 14, the abutting fence 13 can accurately abut against workpieces of different outer diameters after moving a uniform stroke.

[0050] In this way, without changing the output stroke of the fixed driving structure 14, the abutting fence 13 can accurately abut against workpieces of different outer diameters after moving a uniform stroke.

[0051] The position of the contact top plate 13b on the installation sliding plate 13a can be adjusted by the cooperation of a screw rod and a screw hole, the rotation out and in of the screw rod, a micrometer, or the selection of different positions for the installation of the contact top plate 13b by plugging or magnetic attraction.

[0052] The present application does not limit the specific form of the position-adjustable contact top plate 13b.

[0053] In an embodiment, the mounting groove is provided on the mounting slide plate 13a, the mounting groove extends in the same direction as the slide groove 12a, a plurality of screw holes are formed in the mounting groove, and the plurality of screw holes are distributed at intervals along the extension direction of the mounting groove; the mounting hole is provided on the contact top plate 13b; the mounting hole on the contact top plate 13b is in communication with different screw holes on the mounting slide plate 13a, and the screw is screwed in, so that the contact top plate 13b can be fixed at different positions.

[0054] Specifically, the screw is unscrewed, the connection between the contact top plate 13b and the mounting slide plate 13a is released, the contact top plate 13b can be placed at different screw holes on the mounting slide plate 13a according to the needs, it is confirmed that the mounting hole on the contact top plate 13b is in communication with the required screw hole, the screw is screwed in, and the contact top plate 13b can be fixed, thereby completing the adjustment of the position of the contact top plate 13b, so that the contact top plate 13b approaches or moves away from the center of the material table 12.

[0055] In an embodiment, the conveying mechanism 20 comprises: two slide rails 21, the two slide rails 21 are arranged side by side, and any one slide rail 21 extends from the first station to the second station; the material receiving mechanism 10 is arranged on the two slide rails 21 and is connected to the slide rails 21 through a sliding block; a rack 22 extends in the same direction as the slide rails 21 and is arranged on one side of the slide rails 21; a gear 23 is engaged with the rack 22; and a driving motor 24 is fixedly arranged on the material receiving mechanism 10 and connected to the gear 23, so as to drive the gear 23 to rotate.

[0056] Specifically, refer to Figure 1 and Figure 3 In the illustrated embodiment, the fixed end of the driving motor 24 is arranged on the support 11, so as to avoid interfering with the front material receiving of the material table 12. The movable end of the driving motor 24 is provided with the gear 23. When the driving motor 24 works, the gear 23 can be driven to rotate, and through the engagement and linkage of the gear 23 and the rack 22, the gear 23 can drive the driving motor 24 and further drive the material receiving mechanism 10 to move linearly along the rack 22. During the movement of the material receiving mechanism 10, the material receiving mechanism 10 is guided and supported by the slide rails 21, which is beneficial to ensure that the material receiving mechanism 10 moves back and forth between the first station and the second station along the preset path.

[0057] In an embodiment, the overturning mechanism 30 comprises: a clamp for grabbing the workpiece on the material receiving mechanism 10; a lifting driving assembly for driving the clamp to move up and down; and an overturning driving assembly 33 for driving the clamp to rotate and change direction.

[0058] The lifting driving assembly can adopt any driving structure capable of driving the clamp to move in the up-down direction, such as an electric cylinder or a linear module. The overturning driving assembly 33 can adopt any driving structure capable of driving the clamp to rotate, such as a rotary cylinder or a motor.

[0059] Before the rotating clamp and the workpiece thereon are lifted by the lifting driving assembly, the workpiece is ensured to be away from the material receiving mechanism 10 and to have an overturning space.

[0060] In an embodiment, the clamp comprises: two sets of clamping plates 31a, which are oppositely arranged along the left-right direction; a mounting bracket 31b, which is provided with clamping guide rails 31c extending along the left-right direction, and the two sets of clamping plates 31a are slidingly arranged on the clamping guide rails 31c; a linkage gear 31d, which is rotatably arranged on the mounting bracket 31b; and two sets of linkage racks 31e, the upper end of the linkage gear 31d is engaged with one set of linkage racks 31e, and the lower end of the linkage gear 31d is engaged with the other set of linkage racks 31e; when the linkage gear 31d rotates forward, the two sets of linkage racks 31e move towards each other, and the two sets of clamping plates 31a approach each other to tightly hold the workpiece; when the linkage gear 31d rotates reversely, the two sets of linkage racks 31e move away from each other, and the two sets of clamping plates 31a move away from each other to release the workpiece.

[0061] For details, please refer to Figure 5 In the illustrated embodiment, the mounting bracket 31b extends along the left-right direction, and the mounting bracket 31b is provided with two clamping guide rails 31c, which are arranged in the up-down direction and are spaced apart from each other, and any one of the clamping guide rails 31c extends along the left-right direction. The two clamping guide rails 31c cooperatively support the two sets of clamping plates 31a, and the two sets of clamping plates 31a are symmetrically arranged along the left-right direction.

[0062] For details, please refer to Figure 5 A linkage gear 31d is arranged between the two clamping guide rails 31c, and the linkage gear 31d is rotatably arranged on the mounting bracket 31b through a bearing. The upper end of the linkage gear 31d is engaged with one set of linkage racks 31e, and the lower end of the linkage gear 31d is engaged with the other set of linkage racks 31e. The upper set of linkage racks 31e is connected to the left set of clamping plates 31a, and the lower set of linkage racks 31e is connected to the right set of clamping plates 31a.

[0063] When the linkage gear 31d rotates clockwise, the upper set of linkage racks 31e moves from left to right, the lower set of linkage racks 31e moves from right to left, and the two sets of clamping plates 31a move towards each other and approach each other. When the linkage gear 31d rotates counterclockwise, the upper set of linkage racks 31e moves from right to left, the lower set of linkage racks 31e moves from left to right, and the two sets of clamping plates 31a move away from each other and move away from each other.

[0064] With reference to the foregoing Figure 5 , the clamp further comprises a clamping driving member 31f in the form of a pneumatic cylinder, which extends in the left-right direction and is configured to drive one set of the linkage racks 31e to move in the left-right direction. When one set of the linkage racks 31e moves in the left-right direction, the other set of the linkage racks 31e is able to move in the opposite direction synchronously under the transmission of the linkage gears 31d and the linkage racks 31e.

[0065] In one embodiment, the lifting driving assembly comprises a lifting guide rail 32a and a lifting driving structure 32b, and the turnover mechanism 30 further comprises a turnover support 34 and a turnover mounting plate 35. The lifting guide rail 32a is fixedly arranged on the turnover support 34 and extends in the up-down direction. The turnover mounting plate 35 is slidingly arranged on the lifting guide rail 32a. The lifting driving structure 32b is connected to the turnover mounting plate 35. The turnover driving assembly 33 comprises a turnover driving member 33a, a driving gear 33b and a driven gear 33c. The turnover driving member 33a is arranged on the turnover support 34 and connected to the driving gear 33b. The driving gear 33b is able to rotate under the driving of the turnover driving member 33a. The driven gear 33c is rotatably arranged on the turnover mounting plate 35 and connected to the clamp. The driving gear 33b is engaged with the driven gear 33c. After the clamp grasps the workpiece, the lifting driving structure 32b drives the turnover mounting plate 35 to rise along the lifting guide rail 32a, so that the workpiece is away from the material receiving mechanism 10. When the workpiece is turned over, the turnover driving member 33a drives the driving gear 33b to rotate, the driving gear 33b drives the driven gear 33c to rotate, and the driven gear 33c drives the turnover mounting plate 35 and the clamp to rotate.

[0066] The lifting driving structure 32b can be any driving structure that is able to drive the turnover mounting plate 35 to move linearly along the lifting guide rail 32a, such as an electric cylinder or a linear module. The turnover driving member 33a can be any driving structure that is able to drive the driving gear 33b to rotate, such as a rotary pneumatic cylinder or a motor.

[0067] Specifically, as shown in Figure 1 and Figure 2 , in the illustrated embodiment, the fixed end of the turnover driving member 33a is arranged on the turnover support 34, and the movable end is provided with the driving gear 33b. The driven gear 33c is rotatably arranged on the turnover mounting plate 35 through a bearing. The driven gear 33c is engaged with the driving gear 33b from top to bottom. The front end of the driven gear 33c is connected to the mounting bracket 31b.

[0068] When the workpiece needs to be turned over, first ensure that the clamp grips the workpiece, and then start the lifting driving structure 32b, so that the turnover mounting plate 35 carries the clamp and the workpiece along the lifting guide rail 32a to rise, so that the workpiece leaves the material receiving mechanism 10; after the workpiece rises to a certain height and has a turnover space, the lifting driving structure 32b stops working, the turnover driving member 33a starts, the driving gear 33b drives the driven gear 33c and the clamp to turn over, so that the workpiece changes direction.

[0069] The above embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as limiting the scope of the patent application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A workpiece feeding device, characterized in that, The utility model relates to a workpiece grinding device, which comprises: a workpiece receiving mechanism (10) for receiving workpieces; a conveying mechanism (20) for driving the workpiece receiving mechanism (10) to and from a first station and a second station; a turnover mechanism (30) for turning over the workpieces on the workpiece receiving mechanism (10). When the workpiece receiving mechanism (10) is located at the first station, it can receive workpieces to be ground. When the workpiece receiving mechanism (10) is located at the second station, the turnover mechanism (30) can contact the workpieces on the workpiece receiving mechanism (10) and turn over the workpieces.

2. The workpiece loading device of claim 1, wherein, The workpiece receiving mechanism (10) comprises: a support (11) slidingly arranged on the conveying mechanism (20) and capable of moving under the driving of the conveying mechanism (20); a workpiece placing table (12) arranged on the support (11) and used for placing workpieces; a fixing assembly for fixing the workpieces on the workpiece placing table (12) so as to avoid displacement of the workpieces on the workpiece placing table (12).

3. The workpiece loading device of claim 2, wherein, The fixing assembly comprises: four groups of abutting fence plates (13) arranged in a quadrilateral on the workpiece placing table (12); a fixing driving structure (14) for driving the four groups of abutting fence plates (13) to move closer to or away from each other; when the four groups of abutting fence plates (13) move towards each other and closer to each other, they can clamp the workpieces on the workpiece placing table (12) from four sides; when the four groups of abutting fence plates (13) move away from each other, they can release the workpieces on the workpiece placing table (12) so as to facilitate the turnover mechanism (30) to turn over the workpieces.

4. The workpiece loading device of claim 3, wherein, The main body of the workpiece placing table (12) is arranged in a square shape, and four groups of sliding grooves (12a) are arranged on the workpiece placing table (12), any one of the groups of sliding grooves (12a) extends from a corner of the workpiece placing table (12) towards the center of the workpiece placing table (12), and the four groups of sliding grooves (12a) are arranged in a circular array with the center of the workpiece placing table (12) as the center; one group of the abutting fence plates (13) is slidingly arranged in any one of the groups of sliding grooves (12a).

5. The workpiece loading device of claim 4, wherein, The abutting fence plate (13) comprises: a mounting sliding plate (13a) slidingly arranged in the sliding groove (12a) and capable of moving closer to or away from the center of the workpiece placing table (12) along the sliding groove (12a) under the driving of the fixing driving structure (14); a contact top plate (13b) arranged on the mounting sliding plate (13a) and used for contacting the workpieces; wherein the position of the contact top plate (13b) on the mounting sliding plate (13a) is adjustable; the position of the contact top plate (13b) on the mounting sliding plate (13a) is adjusted so as to facilitate the fixing assembly to clamp workpieces of different specifications.

6. The workpiece loading device of claim 4, wherein, The fixing driving structure (14) comprises: a rotary center mounting plate (14a) rotatably arranged at the center of the workpiece placing table (12) and arranged on the back of the workpiece placing table (12). Four movable connecting rods (14b), one end of any of the movable connecting rods (14b) is rotatably connected with the rotation center mounting plate (14a), and the other end is rotatably connected with one of the resisting panels (13), the four movable connecting rods (14b) are arranged in a circular array with the center of the material table (12) as the center; A rotation driving member (14c) is connected with one group of the resisting panels (13) or two groups of the resisting panels arranged on the same line, and is used for driving the resisting panels (13) to move along the chute (12a); When the rotation driving member (14c) drives the resisting panels (13) connected therewith to move, the four movable connecting rods (14b) can move synchronously through the rotation linkage of the rotation center mounting plate (14a). Under the guidance of the chute (12a), when the rotation center mounting plate (14a) rotates forward, the four groups of resisting panels (13) move towards each other, and when the rotation center mounting plate (14a) rotates reversely, the four groups of resisting panels (13) move away from each other.

7. The workpiece loading device of claim 1, wherein, The conveying mechanism (20) comprises: Two slide rails (21), the two slide rails (21) are arranged side by side, any of the slide rails (21) extends from the first station to the second station, the material receiving mechanism (10) is arranged on the two slide rails (21) and is slidably connected with the slide rails (21) through a sliding block; A rack (22) extends in the same direction as the slide rails (21) and is arranged on one side of the slide rails (21); A gear (23) is engaged with the rack (22); A driving motor (24) is fixedly arranged on the material receiving mechanism (10) and is connected with the gear (23) to drive the gear (23) to rotate.

8. The workpiece loading device of claim 1, wherein, The turnover mechanism (30) comprises: A clamp for grabbing the workpiece on the material receiving mechanism (10); A lifting driving assembly for driving the clamp to move up and down; A turnover driving assembly for driving the clamp to rotate and change direction.

9. The workpiece loading device of claim 8, wherein, The clamp comprises: Two groups of clamping plates (31a) arranged opposite to each other along the left-right direction; An installation support (31b) provided with a clamping guide rail (31c) extending along the left-right direction, and the two groups of clamping plates (31a) are slidably arranged on the clamping guide rail (31c); A linkage gear (31d) rotatably arranged on the installation support (31b); Two groups of linkage racks (31e), the upper end of the linkage gear (31d) is engaged with one of the linkage racks (31e), and the lower end of the linkage gear (31d) is engaged with the other linkage rack (31e); When the linkage gear (31d) rotates forward, the two groups of linkage racks (31e) move towards each other, and the two groups of clamping plates (31a) move close to each other to tightly hold the workpiece; When the linkage gear (31d) rotates reversely, the two groups of linkage racks (31e) move away from each other, and the two groups of clamping plates (31a) move away from each other to release the workpiece.

10. The workpiece loading device of claim 8, wherein, The lifting driving assembly comprises a lifting guide rail (32a) and a lifting driving structure (32b), the turnover mechanism (30) further comprises a turnover support (34) and a turnover mounting plate (35), the lifting guide rail (32a) is fixedly arranged on the turnover support (34) and extends in the up-down direction, the turnover mounting plate (35) is slidingly arranged on the lifting guide rail (32a), and the lifting driving structure (32b) is connected with the turnover mounting plate (35); The turnover driving assembly comprises a turnover driving member (33a), a driving gear (33b) and a driven gear (33c), the turnover driving member (33a) is arranged on the turnover support (34) and connected with the driving gear (33b), the driving gear (33b) can rotate under the driving of the turnover driving member (33a), the driven gear (33c) is rotatably arranged on the turnover mounting plate (35) and connected with the clamp, and the driving gear (33b) is engaged with the driven gear (33c); After the clamp grasps the workpiece, the lifting driving structure (32b) drives the turnover mounting plate (35) to ascend along the lifting guide rail (32a), so that the workpiece is away from the material receiving mechanism (10); When the workpiece is turned over, the turnover driving member (33a) drives the driving gear (33b) to rotate, the driving gear (33b) drives the driven gear (33c) to rotate, and the driven gear (33c) drives the turnover mounting plate (35) and the clamp to rotate.

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