A quick-change precision positioning device on a PACK production line tool trolley

Abstract

This utility model belongs to the field of battery pack positioning technology, specifically relating to a quick-change precision positioning device for a PACK production line tooling trolley. It includes a trolley, a guide assembly, and a quick-change mechanism. A positioning pin is set at the bottom of the guide assembly, which inserts into a positioning hole on the trolley. The quick-change mechanism includes a thumb-shaped clamp and a cam sleeve. The lower end of the thumb-shaped clamp is inserted into the cam sleeve, and quick locking or unlocking is achieved by rotating a knob. The trolley tray has multiple pre-set cam sleeve mounting positions, each corresponding to a product model. The guide assembly integrates a coarse guide, support, and precision positioning mechanism for the PACK placement on the top of the mounting plate, with at least two thumb-shaped clamps symmetrically arranged at the bottom to ensure balanced locking force. This device, through the pre-positioning cooperation between the positioning pin and the positioning hole and the thumb-shaped clamp's quick-locking structure, avoids the cumbersome operation of traditional bolt disassembly, achieving second-level model changeover. The multiple mounting positions support rapid model changeover, improving production line flexibility and assembly efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of battery pack positioning technology, specifically relating to a quick-change precision positioning device on a tooling trolley in a PACK production line. Background Technology

[0002] Currently, new energy battery PACK production lines face the need for mixed production of multiple product models. Each assembly station has stringent requirements for PACK positioning accuracy, necessitating customized design of the positioning mechanism on the PACK tooling carriage according to product model changes. There is a lack of universality between positioning mechanisms for different product models. When switching production lines to produce different models, the current positioning mechanism must be completely removed and replaced with one adapted to the new model. The connection between the positioning mechanism and the tooling carriage is generally secured with bolts. This changeover method requires repeated disassembly and installation of multiple bolts, consuming significant time and manpower, severely reducing production line changeover efficiency. Manual operation is prone to errors such as missing bolts, leading to unreliable connections between the positioning mechanism and the carriage, affecting PACK assembly accuracy. Frequent changeovers can cause stripped or damaged threaded holes in the carriage tray, ultimately resulting in the entire tooling carriage being scrapped, increasing equipment maintenance costs and downtime.

[0003] Chinese Patent Publication No. CN214565536U discloses a warehousing and logistics trolley, relating to the field of battery pack transportation. This warehousing and logistics trolley, used for transporting battery packs, includes a trolley body for carrying the battery pack; a positioning component disposed on the trolley body, the positioning component including at least one positioning part for inserting and engaging with the battery pack to fix the battery pack relative to the trolley body; and a limiting component disposed on the trolley body, the limiting component including at least one limiting part for limiting the battery pack during transportation. This warehousing and logistics trolley, with its positioning part for inserting and engaging with the battery pack to position it, and its limiting part for limiting the battery pack, prevents the battery pack from shaking during transportation, avoids the battery pack falling, and improves the safety of battery pack transportation. However, the above device uses bolts to fix the positioning part, which requires repeated disassembly of the bolts during frequent model changes, easily leading to wear on the threaded holes of the trolley body. Therefore, those skilled in the art urgently need to solve the above technical problems. Utility Model Content

[0004] The technical problem to be solved by this utility model is to improve the changeover efficiency of the production line in the above-mentioned prior art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A quick-change precision positioning device for a tooling trolley on a PACK production line includes a trolley, a guide assembly, and a quick-change mechanism; the bottom of the guide assembly is provided with a positioning pin, which is installed in a positioning hole on the trolley.

[0007] The quick-change mechanism includes a thumb-type clamp, a cam sleeve, and a cam end. The thumb-type clamp includes a knob end and is fixed to the guide assembly. The cam end and the cam sleeve are mounted on the tray of the trolley. The thumb-type clamp is inserted into the cam sleeve through the cam end.

[0008] By adopting the above technical solution, through the insertion and engagement of the positioning pin at the bottom of the guide assembly with the positioning hole of the trolley, and the structural design of the thumb-type clamp in the quick-change mechanism inserting into the cam sleeve, rapid positioning and locking of the guide assembly and the trolley are achieved. Compared with the traditional bolt fixing method, this assembly relationship avoids the tedious operation of repeatedly disassembling bolts, which not only improves the efficiency of changeover but also reduces the risk of wear on threaded holes caused by frequent disassembly, thus extending the service life of the trolley.

[0009] Furthermore, the guide assembly also includes a mounting plate, a PACK placement coarse guide mechanism, a PACK support mechanism, and a PACK fine positioning mechanism;

[0010] The PACK placement coarse guide mechanism, PACK support mechanism, and PACK fine positioning mechanism are respectively fixedly installed on the top of the mounting plate.

[0011] By adopting the above technical solution, the PACK placement coarse guide mechanism, PACK support mechanism and PACK fine positioning mechanism are integrated and fixed on the top of the mounting plate. This structure concentrates the various functions of the guide component on the same mounting carrier, which simplifies the overall assembly process of the guide component and the trolley, requiring only the mounting plate to be connected to the trolley. It also facilitates the independent maintenance or replacement of individual functional modules in the later stage, reducing maintenance costs.

[0012] Furthermore, at least two of the thumb-shaped clamps are symmetrically arranged along the center line of the mounting plate and are respectively fixed to the left and right sides of the bottom of the mounting plate.

[0013] By adopting the above technical solution, the symmetrical arrangement and fixation of the thumb-type clamps along the center line of the mounting plate to the left and right sides of the bottom ensures the force balance when the guide assembly is locked to the trolley tray. The symmetrical layout avoids the tilting or offset of the mounting plate caused by clamping on one side, making the connection between the guide assembly and the trolley more stable. This, in turn, ensures the matching accuracy of functional modules such as the PACK placement coarse guide mechanism and the PACK fine positioning mechanism with the battery pack, and improves the consistency of assembly on the production line.

[0014] Furthermore, the mounting surface of the trolley tray is pre-set with at least two sets of cam sleeve mounting positions.

[0015] By adopting the above technical solution, the trolley tray is designed with at least two sets of cam sleeve mounting positions, which allows the same trolley to be adapted to multiple sets of different models of guide components. When the production line needs to switch battery pack models, it is only necessary to unlock the thumb clamp of the original guide component from the original cam sleeve and then insert it into the cam sleeve mounting position corresponding to the new guide component to complete the model change. There is no need to replace the entire trolley or redesign the positioning structure, which significantly reduces the equipment modification cost of multi-product mixed production lines.

[0016] Furthermore, the positioning pin is fixedly disposed on the bottom of the mounting plate in a direction perpendicular to the bottom surface of the mounting plate;

[0017] The trolley tray has a corresponding positioning hole that matches the diameter and position of the positioning pin. After the positioning pin is inserted into the positioning hole, it forms a positioning fit between the guide component and the trolley tray.

[0018] By adopting the above technical solution, the positioning pin is fixed perpendicular to the bottom surface of the mounting plate and its assembly relationship matches the diameter and position of the positioning hole on the trolley tray, ensuring the positioning and fit between the guide assembly and the trolley tray. The vertical setting avoids insertion jamming or offset caused by the tilting of the positioning pin, while the precise matching of diameter and position eliminates assembly gaps, making the docking process between the guide assembly and the trolley smoother. At the same time, it ensures the precise positioning of the PACK precision positioning mechanism and the battery pack, providing a reliable benchmark for subsequent battery pack assembly processes.

[0019] Furthermore, the lower end of the thumb-type clamp is adapted to the inner cavity structure of the cam sleeve.

[0020] By adopting the above technical solution, the assembly relationship between the lower end of the thumb-type clamp and the inner cavity of the cam sleeve ensures a tight fit between the two during locking. This structural fit prevents wobbling or loosening between the thumb-type clamp and the cam sleeve, enhances the connection reliability of the quick-change mechanism, and makes the guide assembly less prone to separation from the trolley due to external forces during transportation or production line operations, further improving the safety of battery pack transportation and assembly processes.

[0021] Furthermore, the bottom of the trolley is provided with rollers and a jack support base, and the jack support base is installed on the trolley by bolts.

[0022] By adopting the above technical solution, the assembly relationship between the rollers and the jack support base at the bottom of the trolley is achieved through bolted installation, balancing the trolley's mobility and stability. The rollers facilitate rapid movement of the trolley within the production line, while the jack support base allows for adjustment of the support height to ensure stable contact with the ground when the trolley needs to be secured, preventing positioning deviations caused by roller slippage. The bolted connection design allows for adjustment of the jack support base's installation position or replacement with different specifications of support bases based on the flatness of the production line floor, enhancing the trolley's adaptability to complex operating environments.

[0023] This utility model has the following beneficial effects:

[0024] 1. This utility model achieves rapid positioning and locking of the guide assembly and the trolley by vertically inserting the bottom positioning pin of the guide assembly into the positioning hole of the trolley tray. The positioning pin is fixed in a direction perpendicular to the bottom surface of the mounting plate, matching the diameter and position of the positioning hole. The lower end of the thumb-type clamp is adapted to the cam sleeve, and the lower end of the thumb-type clamp is adapted to the inner cavity structure of the cam sleeve. This avoids the repeated disassembly and disassembly operations of the traditional bolt fixing method, which not only improves the efficiency of changing the type, but also reduces the risk of wear of the threaded hole caused by frequent disassembly.

[0025] 2. This utility model integrates and fixes the PACK coarse guide mechanism, PACK support mechanism and PACK fine positioning mechanism on the top of the mounting plate, so that the various functions of the guide component are concentrated on the same mounting carrier, simplifying the overall assembly process of the guide component and the trolley. Only the mounting plate needs to be connected to the trolley. At the same time, it is convenient to carry out independent maintenance or replacement of individual functional modules in the later stage, reducing maintenance costs.

[0026] 3. This utility model ensures the force balance when the guide component and the trolley tray are locked by symmetrically setting and fixing the thumb-type clamp along the center line of the mounting plate. This avoids the tilting or offset of the mounting plate caused by clamping on one side, enhances the stability of the connection between the guide component and the trolley, and thus ensures the matching accuracy between the PACK precision positioning mechanism and the battery pack, improving the consistency of assembly on the production line.

[0027] 4. This utility model uses an assembly design with at least two sets of cam sleeve mounting positions pre-set on the trolley tray mounting surface, which allows the same trolley to be adapted to multiple sets of guide components of different models. Each set of mounting positions corresponds to one product type. When changing models, it is only necessary to unlock the thumb-shaped clamp of the original guide component from the original cam sleeve and then insert it into the cam sleeve mounting position corresponding to the new guide component. There is no need to replace the entire trolley or redesign the positioning structure, which significantly reduces the equipment modification cost for multi-product mixed production lines. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0029] Figure 2 This is a schematic diagram of the structure of the guide component of this utility model;

[0030] Figure 3 This is a schematic diagram of the structure of the present invention after the guide component has been removed;

[0031] Figure 4 This is a schematic diagram of the structure of product A processed according to this utility model;

[0032] Figure 5 This is a schematic diagram of the structure of this utility model where product A is replaced with product B;

[0033] Figure 6 This utility model Figure 3 Enlarged schematic diagram of part A in the middle.

[0034] Among them, 1-cart; 11-pallet; 111-cam sleeve mounting position; 112-positioning hole; 12-roller; 13-jack support seat; 2-guide assembly; 21-mounting plate; 22-PACK placement coarse guide mechanism; 23-PACK support mechanism; 24-PACK fine positioning mechanism; 25-positioning pin; 3-quick change mechanism; 31-knob end; 32-cam end; 33-thumb type clamp; 34-cam sleeve. Detailed Implementation

[0035] The present invention will now be described in further detail with reference to the accompanying drawings and specific preferred embodiments.

[0036] In the description of this utility model, it should be understood that the terms "left side," "right side," "upper part," "lower part," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. "First," "second," etc., do not indicate the importance of the components, and therefore should not be construed as a limitation of this utility model. The specific dimensions used in this embodiment are only for illustrating the technical solution and do not limit the protection scope of this utility model.

[0037] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, a quick-change precision positioning device for a PACK production line tooling trolley is described. The main body of the device consists of a trolley 1, a guide assembly 2, and a quick-change mechanism 3. The trolley 1 has rollers 12 and a jack support 13 bolted to its bottom. The mounting surface of its top tray 11 has at least two sets of cam sleeve mounting positions 111, and correspondingly, positioning holes 112 that match the diameter and position of the positioning pins 25. The guide assembly 2 has a PACK placement coarse guide mechanism 22, a PACK support mechanism 23, and a PACK precision positioning mechanism 24 fixedly mounted on its top mounting plate 21. Positioning pins 25 are fixedly mounted on its bottom along a direction perpendicular to the bottom surface of the mounting plate 21. At least two rotating thumb-shaped clamps 33 are symmetrically fixed on the left and right sides of the bottom of the mounting plate 21 along its centerline. The thumb clamp 33 includes a knob end 31. The thumb clamp 33 is mounted on a cam end 34 on the trolley 1, and the cam end 34 is fitted inside a cam sleeve 32. The cam end 32 is installed in the cam sleeve mounting position 111 of the trolley 1 tray 11 to form a cam sleeve 34. The lower end of the thumb clamp 33 is inserted into the cam sleeve 34, and the internal cavity structures of the two are compatible. Finally, the guide assembly 2 is inserted into the positioning hole 112 of the trolley 1 tray 11 through the bottom positioning pin 25 to form a positioning fit, and the quick-change mechanism 3 locks and fixes the guide assembly 2 and the trolley 1 through the insertion of the thumb clamp 33 and the cam sleeve 34.

[0038] In one embodiment, refer to Figure 2 and Figure 3As can be seen, when the battery pack needs to be placed on the trolley 1, the PACK placement coarse guide mechanism 22 at the top of the guide assembly first guides the battery pack's descent through an inclined guide plate or flared structure, correcting slight offsets during placement, avoiding jamming or collisions, and completing the initial positioning; subsequently, the PACK support mechanism 23 provides stable support to prevent the battery pack from shaking during subsequent processes, laying the foundation for precise positioning; next, the PACK fine positioning mechanism 24 ensures that it conforms to the production line assembly reference position through a high-precision pin hole mating structure such as a cylindrical pin; at the same time, the stable connection between the guide assembly 2 and the trolley is achieved through the pre-positioning of the positioning pin 25 and the positioning hole 112 and the quick locking of the thumb-type clamp 33 with the cam sleeve 34; the positioning pin 25, which is fixed at the bottom of the guide assembly 2 perpendicular to the bottom surface of the mounting plate 21, is inserted into the trolley tray 11 with a diameter matching. The precisely positioned positioning holes 112 prevent battery pack positioning errors caused by the misalignment of the guide component 2. Two thumb-shaped clamps 33 are symmetrically arranged on the left and right sides of the bottom of the guide component 2 along the center line of the mounting plate. Their lower ends are adapted to the inner cavity structure of the cam sleeve 34 of the trolley tray. By manually rotating the knob end 31, the cam structure is pressed against the inner wall of the cam sleeve 34 to fix the guide component 2. The symmetrical layout ensures uniform force and avoids tilting. In addition, at least two sets of cam sleeve mounting positions 111 are preset on the mounting surface of the trolley tray 11 to support the replacement of multiple models of guide components 2. The replacement can be completed simply by unlocking the thumb-shaped clamps 33, lifting the guide component 2, aligning the positioning pin 25 of the new guide component 2 with the positioning hole 112 of the target mounting position, inserting and locking it. There is no need to remove bolts or adjust the structure, which reduces the traditional replacement time from minutes to seconds.

[0039] In one embodiment, refer to Figure 4 and Figure 5It can be seen that the operator rotates the knob ends 31 of the thumb-shaped clamps 33 on the left and right sides of the bottom of the original guide assembly adapted to product A in the opposite direction. Utilizing the characteristic that its lower end is adapted to the inner cavity structure of the corresponding cam sleeve 34 of product A, the squeezing state between the cam end 32 inside the thumb-shaped clamp 33 and the inner wall of the cam sleeve 34 is released, thus releasing the locking force between the guide assembly 2 and the trolley tray. Subsequently, the operator lifts the original guide assembly 2 upwards as a whole. Because the positioning pin 25, which is vertically fixed to the bottom surface of the mounting plate 21, matches the diameter and position of the corresponding positioning hole 112 of product A on the trolley tray 11, the positioning pin 25 can easily disengage from the positioning hole 112, achieving complete separation of the original guide assembly 2 from the trolley 1. Next, the guide assembly adapted to product B is removed. For part 2, align its bottom positioning pin 25 with the positioning hole 112 of the cam sleeve mounting position 111 corresponding to product B on the trolley tray. For products that have been produced, turn the knob of the thumb clamp 33 from ON to OFF to unlock. Then, manually pick up the two unlocked workpieces from the trolley and place them on a special tooling for temporary storage. Next, take out the guide component 2 corresponding to the product model to be produced, align its bottom positioning pin 25 with the positioning hole 112 on the trolley tray 11, and place it steadily on the tray 11. At the same time, ensure that the thumb clamp 33 cooperates with the cam sleeve 34 below and is inserted into the cam sleeve 34. Finally, rotate the knob of the thumb clamp 33 from OFF to ON to lock. The entire changeover process is now complete.

[0040] Working principle: The tray 11 at the top of the trolley 1 has multiple cam sleeve mounting positions 111 and matching positioning holes 112. Rollers 12 and an adjustable jack support 13 are provided at the bottom to ensure both movement and stability. The guide assembly 2 integrates the PACK coarse guide mechanism 22, PACK support mechanism 23, and PACK fine positioning mechanism 24 at the top via the mounting plate 21. A vertically fixed positioning pin 25 is fixed at the bottom, and symmetrically arranged thumb-type clamps 33 are provided. The positioning pin 25 matches the diameter and position of the positioning hole 112 on the tray 11 of the trolley 1 to achieve pre-positioning. The lower end of the thumb-type clamp 33 is adapted to the inner cavity structure of the cam sleeve 34. By rotating the knob end 31, the internal cam structure presses against the inner wall of the cam sleeve 34, tightening and fixing the guide assembly 2. The trolley 1 and tray 11 feature symmetrically arranged thumb-type clamps 33 to ensure balanced force and prevent tilting. When the production line needs to switch battery pack models, simply rotate the original thumb-type clamp 33 in the reverse direction to unlock it, remove the original guide component 2, align the positioning pin 25 of the new guide component 2 with the positioning hole 112 of the target mounting position, insert it, and then rotate the new thumb-type clamp 33 to lock it in place. This completes the model changeover without removing bolts or replacing the entire trolley 1. The multi-level positioning function ensures precise battery pack assembly. The connection design, combining the positioning pin 25, the positioning hole 112 for pre-positioning, and the thumb-type clamp 33 for quick locking, achieves efficient connection. Furthermore, the multi-model compatible cam sleeve mounting position 111 supports model changeover in seconds, significantly improving the efficiency of production line model changeover and the flexibility of multi-product mixed-line production.

[0041] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various equivalent transformations can be made to the technical solutions of the present invention, and all such equivalent transformations fall within the protection scope of the present invention.

Claims

1. A quick-change precision positioning device for a tooling trolley on a PACK production line, characterized in that, It includes a trolley (1), a guide assembly (2) and a quick-change mechanism (3); the bottom of the guide assembly (2) is provided with a positioning pin (25), which is installed in a positioning hole (112) on the trolley (1); The quick-change mechanism (3) includes a thumb-type clamp (33), a cam sleeve (34), and a cam end (32). The thumb-type clamp (33) includes a knob end (31). The thumb-type clamp (33) is fixed on the guide assembly (2). The cam end (32) and the cam sleeve (34) are mounted on the tray (11) of the trolley (1). The thumb-type clamp (33) is inserted into the cam sleeve (34) through the cam end (32).

2. The quick-change precision positioning device on the tooling trolley of the PACK production line according to claim 1, characterized in that, The guide assembly (2) also includes a mounting plate (21), a PACK placement coarse guide mechanism (22), a PACK support mechanism (23), and a PACK fine positioning mechanism (24); The PACK placement coarse guide mechanism (22), PACK support mechanism (23) and PACK fine positioning mechanism (24) are respectively fixedly installed on the top of the mounting plate (21).

3. The quick-change precision positioning device on the tooling trolley of the PACK production line according to claim 2, characterized in that, At least two of the thumb-shaped clamps (33) are symmetrically arranged along the center line of the mounting plate (21) and are respectively fixed on the left and right sides of the bottom of the mounting plate (21).

4. The quick-change precision positioning device on the tooling trolley of the PACK production line according to claim 3, characterized in that, The mounting surface of the trolley (1) pallet (11) has at least two sets of cam sleeve mounting positions (111).

5. The quick-change precision positioning device on the tooling trolley of the PACK production line according to claim 2, characterized in that, The positioning pin (25) is fixedly disposed on the bottom of the mounting plate (21) in a direction perpendicular to the bottom surface of the mounting plate (21); The trolley's tray (11) has a corresponding positioning hole (112) that matches the diameter and position of the positioning pin (25). After the positioning pin (25) is inserted into the positioning hole (112), it forms a positioning fit between the guide component (2) and the tray (11).

6. The quick-change precision positioning device on the tooling trolley of the PACK production line according to claim 4, characterized in that, The lower end of the thumb-type clamp (33) is adapted to the inner cavity structure of the cam sleeve (34).

7. The quick-change precision positioning device on the tooling trolley of the PACK production line according to claim 1, characterized in that, The bottom of the trolley (1) is provided with rollers (12) and jack support base (13), and the jack support base (13) is installed on the trolley (1) by bolts.

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