Material taking mechanism

Abstract

The utility model provides a material taking mechanism. The material taking mechanism comprises a main frame, a guide frame, a first driving module, a second driving module and at least one pair of symmetrically-arranged clamping parts. The clamping part comprises a fixed clamping jaw and movable pressing blocks, the movable pressing blocks are movably connected with the fixed clamping jaw so as to form a size-variable opening with the fixed clamping jaw, the opening is used for clamping a workpiece, and the first driving module is used for driving the movable pressing blocks to move so as to change the size of the opening; the second driving module and the guide frame are fixed to the main frame, the guide frame comprises branch beams in one-to-one correspondence with the clamping parts, the fixed clamping jaws of the pair of symmetrically-arranged clamping parts are slidably connected with the two branch beams located on the same straight line respectively, and the second driving module is connected with the fixed clamping jaws. And each pair of clamping parts is driven to move on the branch beams in a face-to-face or back-to-back manner. According to the material taking mechanism, the workpieces are safely and reliably placed on the feeding disc synchronously, the manual material taking link can be well replaced, and the production efficiency and quality of battery pieces are greatly improved.

Description

Technical Field

[0001] The present application relates to the technical field of automated production equipment, and in particular to a material taking mechanism. Background Art

[0002] With the development of industry, the new energy industry is booming. The production of solar silicon wafers in the photovoltaic industry is an important link in the entire industrial chain. After the solar cells are manufactured, they need to be tested, sorted, and color-coded before being packaged. In traditional technology, the cells need to be stacked manually and then transferred to the tray for the next step of packaging. This method has problems such as high labor intensity, low production efficiency, and the cells are prone to bumping and breaking. Utility Model Content

[0003] The purpose of the present application is to solve at least one of the above-mentioned technical defects, especially the problems of high labor intensity, low production efficiency and easy edge breakage of battery cells in the prior art of manual material collection.

[0004] The present application provides a material taking mechanism, comprising a main frame, a guide frame, a first driving module, a second driving module and at least one pair of symmetrically arranged clamping parts;

[0005] The clamping part includes a fixed clamping jaw and a movable pressing block, the movable pressing block is movably connected to the fixed clamping jaw to form an opening with a variable size with the fixed clamping jaw, the opening is used to clamp the workpiece, and the first driving module is used to drive each movable pressing block to move to change the size of the opening;

[0006] The second driving module and the guide frame are fixed on the main frame. The guide frame includes branch beams corresponding to each clamping part one by one. A pair of symmetrically arranged fixed claws of the clamping part are respectively slidably connected to two branch beams in the same straight line. The second driving module is connected to each fixed claw to drive each pair of clamping parts to move toward or away from each other on the branch beams.

[0007] In one embodiment, the first driving module includes an air source and a cylinder corresponding to each movable pressure block. The air source is used to provide driving gas for each cylinder. The cylinder is fixed on the corresponding fixed clamp. The piston rod of the cylinder is connected to the corresponding movable pressure block to drive the movable pressure block to move to change the opening size.

[0008] In one embodiment, the second driving module includes a power unit and a transmission unit, and the power unit is connected to each fixed clamping jaw through the transmission unit.

[0009] In one embodiment, the power unit is a motor, and the transmission unit includes a rotating frame and connecting rods corresponding to each clamping part;

[0010] The rotating frame comprises transmission arms corresponding to each clamping part one by one, the center of the rotating frame is sleeved on the rotating shaft of the motor, and each transmission arm is connected to the corresponding fixed clamping claw through a connecting rod.

[0011] In one of the embodiments, a slide rail is provided on the branch beam, a slider adapted to the slide rail is provided on the fixed clamp, and the fixed clamp is slidably connected to the corresponding branch beam through the cooperation between the slider and the slide rail.

[0012] In one of the embodiments, a buffer pad is provided at the contact position between the pressing block and the workpiece.

[0013] In one embodiment, the cushion is made of a material selected from the group consisting of silicone, rubber, sponge, and foam plastic.

[0014] In one embodiment, there are two pairs of clamping portions, and the two pairs of clamping portions are arranged in a cross shape.

[0015] In one embodiment, the workpiece is stacked battery cells.

[0016] In one embodiment, the contact surfaces of the pressing block and the fixed clamping jaw with the workpiece are parallel planes.

[0017] It can be seen from the above technical solutions that the embodiments of the present application have the following advantages:

[0018] Based on the material picking mechanism in this embodiment, the mechanism includes a main frame, a guide frame, a first drive module, a second drive module and at least one pair of symmetrically arranged clamping parts. The two symmetrical sides of the workpiece are clamped by the clamping parts arranged symmetrically in pairs, which not only increases the number of clamping points, better disperses and transmits the clamping force, but also improves the clamping stability. The movement of all movable pressing blocks in the mechanism is synchronously controlled by the first drive module, and the movement of all fixed clamps on the branch beam is also synchronously controlled by the second drive module, ensuring the consistency of the opening and closing and movement of each clamping part, avoiding the problem of workpiece tilting and bumping caused by asynchronous movement, so that the workpiece can be safely and reliably placed synchronously on the feed tray, and then the subsequent packaging process can be executed. This mechanism can well replace the manual material picking link and greatly improve the production efficiency and quality of battery cells. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1This is a structural schematic diagram of a material taking mechanism in one embodiment of the present application;

[0021] Description of the drawings: 10 - main frame, 20 - guide frame, 210 - branch beam, 220 - slide rail, 30 - second drive module, 310 - power unit, 320 - transmission unit, 3210 - rotating frame, 3211 - transmission arm, 3220 - connecting rod, 40 - clamping part, 410 - fixed clamp, 411 - slider, 420 - movable pressure block, 430 - buffer pad, 50 - cylinder. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0025] In the description of the embodiments of the present utility model, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like are used to indicate an orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or are the orientation or positional relationship in which the utility model product is usually placed when in use, it is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, if the terms "horizontal", "vertical", "overhanging" and the like are used, it does not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted. In the description of the embodiments of the present utility model, "multiple" means at least 2.

[0026] This application provides a material taking mechanism, please refer to Figure 1, includes a main frame 10, a guide frame 20, a first driving module, a second driving module 30 and at least one pair of symmetrically arranged clamping parts 40.

[0027] The main frame 10 is the skeleton and supporting structure of the entire material-retrieving mechanism, providing a platform for installation and movement of other components. It is usually made of steel or other high-strength metal materials to ensure sufficient rigidity and strength to support the weight of the mechanism and withstand various stresses during movement. The design of the main frame 10 needs to consider factors such as the overall size, weight distribution, and stress analysis of the mechanism to ensure the stability and safety of the mechanism. Finite element analysis and other methods are usually used to optimize the design of the frame to improve the strength-to-weight ratio and reduce stress concentration. The main frame 10 can be a welded type welded from steel plates or steel sections, or it can be an integrally cast, one-piece cast type.

[0028] The guide frame 20 is a mechanism for guiding and supporting the movement of the clamping part 40, which is fixed on the main frame 10. The guide frame 20 includes branch beams 210 corresponding to each clamping part 40, and each clamping part 40 can only move under the guidance of the corresponding branch beam 210. The directions guided by the branch beams 210 are close to the center of the guide frame 20 and away from the center of the guide frame 20. The lower part of the center of the guide frame 20 will be used to place the workpiece to be clamped. When each clamping part 40 is close to the center of the guide frame 20, it can be close to the workpiece to be clamped and perform the clamping operation. After the workpiece is transported to the target position, each clamping part 40 is away from the center of the guide frame 20, and the clamped workpiece can be put down. In this application, the clamping parts 40 are arranged in pairs, and each pair of clamping parts 40 is located on two branch beams 210 in the same straight line. The two clamping parts 40 of the same pair can move toward or away from each other on the two branch beams 210 in the same straight line. When moving toward each other, the two clamping parts 40 can gradually approach the two symmetrical sides of the workpiece and clamp the two symmetrical sides of the workpiece. The symmetrical clamping parts 40 provide two symmetrical clamping points. Increasing the number of clamping points can better disperse and transmit the clamping force, avoid the concentration of force and the tilting of the workpiece caused by single-point clamping, and ensure the stability of the workpiece in the straight line direction where the two clamping points are located. In order to ensure the stability of the workpiece, multiple pairs of clamping parts 40 can be set to ensure the stability of the workpiece in various directions.

[0029] The movement of the clamping part 40 on the guide frame 20 can make the clamping part 40 flexibly approach and move away from workpieces of different sizes. In order to perform the clamping operation, each clamping part 40 in this embodiment is provided with a fixed clamping jaw 410 and a movable pressing block 420. The fixed clamping jaw 410 is the main body of the entire clamping part 40, and the movable pressing block 420 is movably connected to the fixed clamping jaw 410, so that an opening of variable size can be formed between the movable pressing block 420 and the fixed clamp, and this opening is used to clamp the workpiece. Since the size of the opening can be adjusted, if the movable pressing block 420 has contacted the workpiece when the opening is reduced, continuing to move appropriately can generate a clamping force on the workpiece, thereby achieving stable clamping of the workpiece. Since the size of the opening is adjustable, the workpiece can be flexibly applied to workpieces of different thicknesses.

[0030] The control of the mechanism when clamping the workpiece can be divided into two stages. The first stage is to control the clamping part 40 to move toward each other on the branch beam 210 so that the clamping part 40 approaches the workpiece. After the clamping part 40 is in place, it enters the second stage, and it is necessary to control the opening to narrow so that the fixed clamp 410 and the movable pressure plate clamp the workpiece. The control of the mechanism when putting down the workpiece can also be divided into two stages. In the first stage, the opening is controlled to be widened so that the fixed clamp 410 and the movable pressure plate release the workpiece. In the second stage, the clamping part 40 is controlled to move away from the workpiece on the branch beam 210 so that the clamping part 40 is away from the workpiece to place the workpiece at the target position.

[0031] In the process of clamping and putting down the workpiece, if the opening control action is not synchronized, it may cause the battery cell to tilt and collide. Therefore, all the movable pressing blocks 420 in this application need to be driven synchronously. Specifically, the power source for each movable pressing block 420 to move relative to the fixed clamp 410 is the first driving module. In other words, the first driving module controls all the movable pressing blocks 420 to move together at the same time, so that all the openings are opened or shrunk synchronously.

[0032] Similarly, in the process of clamping and putting down the workpiece, in addition to the opening size that needs to be adjusted, the clamping part 40 also needs to move on the branch beam 210. If the movement of each branch beam 210 is not synchronized, it may also cause the battery cell to tilt and collide. Therefore, in this application, the movement of all fixed jaws 410 on the branch beam 210 needs to be synchronized. Specifically, each fixed jaw 410 is connected to the second drive module 30, and the power source for each fixed jaw 410 to move on the branch beam 210 is the second drive module 30. In other words, the second drive module 30 controls all fixed jaws 410 to move together at the same time, so that all openings move synchronously toward or away from each other.

[0033] Based on the material-retrieving mechanism in this embodiment, the mechanism includes a main frame 10, a guide frame 20, a first drive module, a second drive module 30 and at least one pair of symmetrically arranged clamping parts 40. The two symmetrical sides of the workpiece are clamped by the clamping parts 40 arranged in pairs, which not only increases the number of clamping points, better disperses and transmits the clamping force, but also improves the clamping stability. The movement of all movable pressing blocks 420 in the mechanism is synchronously controlled by the first drive module, and the movement of all fixed clamps 410 on the branch beam 210 is also synchronously controlled by the second drive module 30, ensuring the consistency of the opening and closing and movement of each clamping part 40, avoiding the problem of workpiece tilting and bumping caused by asynchronous movement, so that the workpiece can be safely and reliably placed synchronously on the feed tray, and then the subsequent packaging process can be executed. This mechanism can well replace the manual material-retrieving link, greatly improving the production efficiency and quality of battery cells.

[0034] In one embodiment, see Figure 1 The first driving module includes an air source and a cylinder 50 corresponding to each movable pressure block 420. The air source is used to provide driving gas for each cylinder 50. The cylinder 50 is fixed on the corresponding fixed clamp 410. The piston rod of the cylinder 50 is connected to the corresponding movable pressure block 420 to drive the movable pressure block 420 to move to change the opening size.

[0035] It can be understood that the cylinder 50 is an actuator that uses compressed gas to do work. The working principle of the cylinder 50 is to use the pressure of compressed gas to push the piston to perform linear reciprocating motion. When the compressed gas is introduced into one end of the cylinder 50, due to the effect of pressure, the piston rod will move along the axis of the cylinder 50; conversely, when the compressed gas is discharged, the piston rod will return to the initial position under the action of the spring or load. In the present application, the movable pressure block moves away from and approaches the claw tip of the fixed clamp by moving up and down. The cylinder should also be installed in the vertical direction when it is set, so that the piston rod can push the movable pressure block up and down to change the size of the opening. The air source can generally be a compressor, and the air source can be controlled to simultaneously inlet or exhaust each cylinder 50 to achieve synchronous control of all movable pressure blocks. The stroke and thrust of the cylinder 50 can be controlled by adjusting parameters such as air pressure and piston diameter. The cylinder is used as a power source because it has a large thrust and fast response, which is suitable for driving a component with a certain load such as the movable pressure block 420 to ensure stable clamping of the workpiece.

[0036] In one embodiment, the second driving module 30 includes a power unit 310 and a transmission unit 320, and the power unit 310 is connected to each fixed clamp 410 through the transmission unit 320. It can be understood that the power unit 310 provides a component for power output, such as a motor, etc. The transmission unit 320 is a mechanism that transmits and converts power into a desired motion form, so that the power provided by the power unit 310 can make the fixed clamp 410 reciprocate along a straight line on the branch beam 210.

[0037] In one embodiment, the power unit 310 is a motor, and the transmission unit 320 includes a rotating frame 3210 and connecting rods 3220 corresponding to each clamping part 40. The rotating frame 3210 includes transmission arms 3211 corresponding to each clamping part 40. The center of the rotating frame 3210 is sleeved on the rotating shaft of the motor, so the rotating frame 3210 can rotate with the rotation of the rotating shaft of the motor. Each transmission arm 3211 on the rotating frame 3210 is connected to the corresponding fixed clamp 410 through the connecting rod 3220, and each set of transmission arms 3211 and connecting rod 3220 structures is equivalent to forming a crank connecting rod. Figure 1 In the structure shown, when the fixed jaw 410 is away from the center of the rotating frame 3210, the rotating frame 3210 rotates in the first direction, each transmission arm 3211 pulls the corresponding connecting rod 3220, and the connecting rod 3220 applies a force to the corresponding fixed jaw 410, and this force has a component force pointing to the center of the rotating frame 3210, and all the fixed jaws 410 will move toward the center of the rotating frame 3210 under the guidance of the corresponding branch beam 210. When the fixed jaw 410 approaches the center of the rotating frame 3210, the rotating frame 3210 rotates in the opposite second direction, each transmission arm 3211 pushes the corresponding connecting rod 3220, and the connecting rod 3220 applies a force to the corresponding fixed jaw 410, and this force has a component force away from the center of the rotating frame 3210, and all the fixed jaws 410 will move away from the center of the rotating frame 3210 under the guidance of the corresponding branch beam 210.

[0038] In one embodiment, a slide rail 220 is provided on the branch beam 210, and the fixed clamp 410 is slidably connected to the corresponding branch beam 210 through the slide rail 220. The slide rail 220 is a mechanism for providing a guide for linear sliding motion. A slider 411 adapted to the slide rail 220 can be provided on the fixed clamp 410, so that the slider 411 can drive the entire clamping part 40 to perform linear reciprocating motion on the branch beam 210 under the guidance of the guide rail. The straight line where the slide rail 220 is located should pass through the center of the rotating frame 3210, so that the clamping part 40 can move toward the center of the rotating frame 3210 or away from the center of the rotating frame 3210 under the guidance of the slide rail 220.

[0039] In one embodiment, a buffer pad 430 is provided at the contact position between the pressure block and the workpiece. The buffer pad 430 is a soft material layer for buffering and shock absorption, and is provided at the contact position between the movable pressure block 420 and the workpiece to prevent damage to the workpiece caused by excessive impact force. When the movable pressure block 420 clamps the workpiece, due to the high hardness of the movable pressure block 420 and the greater fragility of the workpiece, if the workpiece is directly brought into contact with the movable pressure block 420, damage or destruction may be caused to the workpiece. The provision of the buffer pad 430 can evenly transmit the clamping force, prevent local damage caused by stress concentration, and ensure the safety and integrity of the workpiece.

[0040] In one embodiment, the buffer pad 430 is made of a material selected from silicone, rubber, sponge or foam plastic. These materials will deform to a certain extent when compressed, thereby achieving a buffering and shock absorbing effect. At the same time, these materials all have a certain recovery ability and can gradually return to their original state after unloading. However, different materials differ in hardness, wear resistance, recovery rate, operating temperature range, etc., and need to be reasonably selected according to specific conditions of use. In general, the above-mentioned soft material, with its good buffering and energy absorption performance, is very suitable for use in the buffer pad 430 at the contact point between the movable pressing block 420 and the workpiece, effectively avoiding damage to the workpiece and ensuring the reliability of clamping.

[0041] In one embodiment, there are two pairs of clamping parts 40, and the two pairs of clamping parts 40 are arranged in a cross shape. That is, there are four clamping parts 40 in total in this embodiment, and the clamping parts 40 of the two branch beams 210 located on the same straight line are a pair of symmetrically arranged clamping parts 40, and the pair of clamping parts 40 can move toward or away from each other on the corresponding straight line. Therefore, the movement directions of the two pairs of clamping parts 40 are perpendicular to each other, forming a cross shape. This structure is particularly suitable for workpieces of various shapes, especially rectangular workpieces, such as stacked battery cells. It can also be because the rectangular workpiece includes two groups of parallel edges, each pair of clamping parts 40 can stably clamp a group of parallel edges of the workpiece, and the two pairs of clamping parts 40 can stably clamp both groups of edges, so that the entire workpiece has extremely high clamping stability. Further, in the structure with two pairs of clamping parts 40, the guide frame 20, the bogie and the main frame 10 can be set to a cross shape.

[0042] In one embodiment, the contact surfaces of the pressing block and the fixed clamping jaw 410 with the workpiece are parallel planes. This design takes into account that the upper and lower surfaces of the battery cell are both planes. If the contact surfaces of the pressing block and the fixed clamping jaw 410 with the battery cell are not parallel, there will be several separate contact points, resulting in stress concentration, which will damage the battery cell. Designing the contact surfaces of the pressing block and the fixed clamping jaw 410 as parallel planes allows the clamping portion 40 to contact the upper and lower surfaces of the workpiece with the maximum area, thereby improving the reliability and uniformity of clamping.

[0043] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0044] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The various embodiments can be combined as needed, and the same or similar parts can refer to each other.

[0045] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A material taking mechanism, characterized in that: It includes a main frame, a guide frame, a first driving module, a second driving module and at least one pair of symmetrically arranged clamping parts; The clamping portion includes a fixed clamping jaw and a movable pressing block, wherein the movable pressing block is movably connected to the fixed clamping jaw to form an opening with a variable size with the fixed clamping jaw, and the opening is used to clamp the workpiece, and the first driving module is used to drive each of the movable pressing blocks to move to change the size of the opening; The second driving module and the guide frame are fixed on the main frame, and the guide frame includes branch beams corresponding to each clamping part one by one. A pair of symmetrically arranged fixed claws of the clamping part are respectively slidably connected to two branch beams in the same straight line, and the second driving module is connected to each fixed claw to drive each pair of the clamping parts to move toward or away from each other on the branch beams.

2. The material taking mechanism according to claim 1, characterized in that: The first driving module includes an air source and a cylinder corresponding to each movable pressure block. The air source is used to provide driving gas for each cylinder. The cylinder is fixed on the corresponding fixed clamp. The piston rod of the cylinder is connected to the corresponding movable pressure block to drive the movable pressure block to move so as to change the opening size.

3. The material taking mechanism according to claim 1, characterized in that: The second driving module includes a power unit and a transmission unit, and the power unit is connected to each of the fixed clamps through the transmission unit.

4. The material taking mechanism according to claim 3, characterized in that: The power unit is a motor, and the transmission unit includes a rotating frame and connecting rods corresponding to each of the clamping parts; The rotating frame includes transmission arms corresponding to each of the clamping parts one by one, the center of the rotating frame is sleeved on the rotating shaft of the motor, and each of the transmission arms is connected to the corresponding fixed clamping claw through the connecting rod.

5. The material taking mechanism according to claim 1, characterized in that: A slide rail is arranged on the branch beam, a slider matched with the slide rail is arranged on the fixed clamp, and the fixed clamp is slidably connected with the corresponding branch beam through the cooperation between the slider and the slide rail.

6. The material taking mechanism according to claim 1, characterized in that: A buffer pad is arranged at the contact position between the pressing block and the workpiece.

7. The material taking mechanism according to claim 6, characterized in that: The buffer pad is made of a material selected from the group consisting of silica gel, rubber, sponge and foam plastic.

8. The material taking mechanism according to claim 1, characterized in that: The clamping parts are in two pairs, and the two pairs of clamping parts are arranged in a cross shape.

9. The material taking mechanism according to claim 1, characterized in that: The workpiece is stacked battery cells.

10. The material taking mechanism according to claim 1, characterized in that: The contact surfaces of the pressing block and the fixed clamping jaw with the workpiece are planes parallel to each other.

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