Iron shell pitch changing device for battery assembly

By designing the iron shell distance change device for battery assembly, the automatic loading and rearrangement of the iron shell is realized, and the problem of low assembly efficiency of iron shells in the prior art is solved, the assembly efficiency and consistency are improved, and labor costs are reduced.

CN222683535UActive Publication Date: 2025-03-28NINGBO HIGH-TECH ZONE HAIFU TECH CO LTD
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Patent Information

Application Number
CN202421469026.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-25
Publication Date
2025-03-28
Estimated Expiration
2034-06-25

AI Technical Summary

Technical Problem

During the existing battery assembly process, the loading and assembly efficiency of the iron shell is low and relies on manual operations, resulting in low efficiency and high cost.

Method used

An iron shell distance variable device for battery assembly is designed, including a variable distance bracket, a variable distance conveyor mechanism, a variable distance feeding mechanism, a variable distance mechanism and a variable distance discharge mechanism. By automatically loading and rearranging the iron shells, it is transported at designated distances.

Benefits of technology

The automatic loading and rearrangement of iron shells is realized, which improves the efficiency and consistency of battery assembly, reduces labor costs, and ensures the smoothness of subsequent processing.

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Abstract

The utility model provides an iron shell pitch-changing device for battery assembly, which relates to the technical field of battery assembly and comprises a pitch-changing support, a pitch-changing conveying belt mechanism, a pitch-changing feeding mechanism, a pitch-changing mechanism and a pitch-changing discharging mechanism. The variable-pitch conveying belt mechanism is arranged on the variable-pitch support, the variable-pitch feeding mechanism is arranged at the feeding end of the variable-pitch support, and the variable-pitch mechanism comprises a variable-pitch pushing-in assembly, a variable-pitch supporting plate and a connecting supporting plate. The variable-pitch push-in assembly and the variable-pitch supporting plate are arranged on the two sides of the discharging end of the variable-pitch conveying belt mechanism correspondingly. A plurality of variable-pitch channels which are arranged at intervals are arranged on the variable-pitch supporting plate; the variable-pitch push-in assembly is used for correspondingly pushing the iron shell into the variable-pitch channel; a variable-pitch discharging through hole penetrating vertically is formed in the connection supporting plate; the variable-pitch discharging mechanism is used for pushing the iron shells out of the variable-pitch discharging through holes. The iron shell feeding device has the advantages that iron shells which are originally arranged in rows can be rearranged, the iron shells can be conveyed in order conveniently, and the feeding smoothness of the iron shells is improved.
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Description

Technical Field

[0001] The utility model relates to the technical field of battery assembly, in particular to an iron shell pitch-changing device for battery assembly. Background Art

[0002] The existing battery includes an iron shell, a pole ear and a battery pack. During the production process, the pole ear needs to be installed in the iron shell, and then the battery pack is placed in the iron shell and the pole ear is pressed against the end face of the iron shell. Finally, the iron shell is sent to a pressing place for pressing, so that the pole ear and the battery pack are fixed in the iron shell. In the assembly process of the above-mentioned battery before pressing, the iron shell, the pole ear and the battery pack are manually assembled together, which is time-consuming and labor-intensive, with high labor costs. In addition, the consistency of the battery assembly cannot be guaranteed through manual operation, and the overall efficiency of manual assembly is low.

[0003] Especially during the iron shell loading process, it is necessary to manually take out the iron shells from the iron shell box one by one, which is very inconvenient and greatly affects the overall battery assembly efficiency. Utility Model Content

[0004] The technical problem to be solved by the utility model is that the efficiency of manually loading and assembling iron shells of batteries is low. In order to overcome the defects of the above-mentioned prior art, the utility model provides an automatic loading of iron, rearranges the iron shells, and transports the iron shells according to specified spacing, which is convenient for better subsequent processing, saves time and labor, and ensures and greatly improves production efficiency.

[0005] For the purpose of this utility model, the following technical solutions are adopted:

[0006] A variable pitch device for iron shells for battery assembly, comprising a variable pitch bracket, a variable pitch conveyor belt mechanism, a variable pitch feeding mechanism, a variable pitch mechanism and a variable pitch discharging mechanism; the variable pitch conveyor belt mechanism is arranged on the variable pitch bracket, and the iron shells are horizontally conveyed through the variable pitch conveyor belt mechanism; the variable pitch feeding mechanism is arranged at the feeding end of the variable pitch bracket, and the variable pitch feeding mechanism is used to convey the iron shells to the variable pitch conveyor belt mechanism; the variable pitch mechanism comprises a variable pitch pushing assembly, a variable pitch support plate and a connecting support plate; the variable pitch pushing assembly and the variable pitch support plate are respectively arranged on both sides of the discharging end of the variable pitch conveyor belt mechanism; a plurality of variable pitch channels arranged at intervals are arranged on the variable pitch support plate; the distance between the discharging ends of two adjacent variable pitch channels is connected by a connecting support plate; The distance between them is smaller than the distance between the feed ends of two adjacent variable pitch channels; the variable pitch pushing assembly is used to push the iron shell into the variable pitch channel accordingly; the feed end of the connecting support plate is connected with the discharge end of the variable pitch support plate; the connecting support plate is provided with a connecting channel corresponding to the variable pitch channel; and the feed end of the connecting channel is connected with the feed end of the variable pitch channel, and the discharge end of each connecting channel on the connecting support plate is provided with a vertically penetrating variable pitch discharge through hole; flexible support pads are provided on both sides of the variable pitch discharge through hole; the variable pitch discharge mechanism is provided on the connecting support plate and located above the variable pitch discharge through hole, and the variable pitch discharge mechanism is used to push the iron shell out of the variable pitch discharge through hole.

[0007] Preferably, the variable pitch conveyor belt mechanism includes a variable pitch drive motor, an active variable pitch guide roller, a driven variable pitch guide roller and a variable pitch conveyor belt; the variable pitch drive motor is arranged on a variable pitch bracket, and the active variable pitch guide roller and the driven variable pitch guide roller are rotatably connected to the feed end and the discharge end of the variable pitch bracket respectively; and the variable pitch drive motor is transmission-connected to the active variable pitch guide roller, and the variable pitch conveyor belt is tensionedly connected to the active variable pitch guide roller and the driven variable pitch guide roller; a variable pitch conveying block is provided at the discharge end of the variable pitch bracket.

[0008] Preferably, the variable-pitch feeding mechanism comprises a variable-pitch feeding support plate, a variable-pitch feeding cylinder, a variable-pitch feeding push plate and a variable-pitch feeding limit block; the variable-pitch feeding support plate is arranged on one side of the feeding end of the variable-pitch bracket; the variable-pitch feeding cylinder is fixedly connected to the variable-pitch feeding support plate; the variable-pitch feeding push plate is connected to the telescopic rod of the variable-pitch feeding cylinder, and a feeding placement space for preventing the iron shell from being formed between the variable-pitch feeding push plate and the variable-pitch feeding support plate, and variable-pitch feeding blocks are arranged on both sides of the variable-pitch feeding push plate on the variable-pitch feeding support plate; the variable-pitch feeding limit block is arranged on the side of the feeding end of the variable-pitch bracket opposite to the variable-pitch feeding support plate; a variable-pitch limiting channel is formed between the variable-pitch feeding support plate and the variable-pitch feeding limit block.

[0009] Preferably, a variable-pitch conveying baffle for placing the iron shell on both sides of the variable-pitch conveyor belt is arranged in the middle of the variable-pitch bracket, and the width between the two variable-pitch conveying baffles matches the width of a single iron shell.

[0010] Preferably, the variable pitch pushing assembly comprises a variable pitch pushing support plate, a variable pitch pushing cylinder and a variable pitch pushing connecting plate; the variable pitch pushing support plate is arranged on one side of the discharging end of the variable pitch bracket; the variable pitch pushing cylinder is fixedly connected to the variable pitch pushing support plate; the variable pitch pushing connecting plate is connected to the telescopic rod of the variable pitch pushing cylinder, and a number of variable pitch push rods corresponding to the number of the variable pitch channels are arranged on the variable pitch pushing connecting plate, and the variable pitch push rods are aligned with the feeding end of the variable pitch channel; a variable pitch push rod positioning block is also arranged on the variable pitch pushing support plate at the variable pitch push rod; the variable pitch push rod positioning block is provided with variable pitch push rod positioning grooves corresponding to the number of variable pitch push rod positions.

[0011] Preferably, the variable-pitch discharging mechanism comprises a variable-pitch discharging gantry bracket, a variable-pitch discharging cylinder and a variable-pitch discharging connecting plate; the variable-pitch discharging gantry bracket is arranged on a connecting support plate; the variable-pitch discharging cylinder is vertically arranged in the middle of the variable-pitch discharging gantry bracket, the variable-pitch discharging connecting plate is connected to the bottom telescopic rod of the variable-pitch discharging cylinder, and a variable-pitch discharging pressure rod corresponding to the number and position of the variable-pitch discharging through holes is arranged on the variable-pitch discharging connecting plate.

[0012] Preferably, it further comprises a rotating disk device, wherein the rotating disk device comprises a rotating disk driving unit and a rotating disk; the rotating disk driving unit is arranged on a frame, the rotating disk is connected to the rotating disk driving unit, a plurality of assembly stations are arranged along the circumference of the rotating disk, and an assembly tool is arranged on each assembly station; a plurality of iron shell placement grooves are arranged at intervals, and a width between two adjacent connecting channels matches a width between two adjacent iron shell placement grooves.

[0013] To sum up, the advantage of the utility model is that it can rearrange the iron shells originally arranged in a row, so that the iron shells can be conveyed according to the specified spacing, so that they can be better matched with the iron shell placement grooves on the rotating disk device, which is convenient for orderly conveying of the iron shells and improves the smoothness of iron shell feeding. At the same time, they can accurately fall into the iron shell placement grooves on the rotating disk device, which is convenient for subsequent processing and greatly improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of an iron shell pitch-changing device (with a rotating disk device) of the utility model.

[0015] Figure 2 It is a structural schematic diagram of the rotating disk device of the utility model.

[0016] Figure 3 It is a structural schematic diagram of an iron shell pitch-changing device (device without a rotating disk) of the utility model.

[0017] Figure 4 It is a structural schematic diagram of the variable-distance feeding mechanism of the utility model.

[0018] Figure 5 It is a structural schematic diagram of the pitch-changing mechanism of the utility model.

[0019] Description of reference numerals:

[0020] 1. Rotating disk device; 11. Rotating disk driving part; 12. Rotating disk; 13. Assembled loading device; 14. Iron shell placement slot; 31. Variable pitch bracket; 311. Variable pitch conveying baffle; 32. Variable pitch conveying belt mechanism; 321. Variable pitch driving motor; 322. Variable pitch conveying belt; 323. Variable pitch conveying baffle; 33. Variable pitch feeding mechanism; 331. Variable pitch feeding support plate; 332. Variable pitch feeding cylinder; 333. Variable pitch feeding push plate; 334. Variable pitch feeding limit block; 335. Variable pitch feeding baffle; 336. Variable pitch limit channel; 34. Variable pitch mechanism; 341. Variable pitch push Components; 3411, variable pitch push-in support plate; 3412, variable pitch push-in cylinder; 3413, variable pitch push-in connecting plate; 3414, variable pitch push rod; 3415, variable pitch push rod positioning block; 3416, variable pitch push rod positioning groove; 342, variable pitch support plate; 3421, variable pitch channel; 343, connecting support plate; 3431, connecting channel; 3432, variable pitch discharge through hole; 3433, flexible support pad; 35, variable pitch discharge mechanism; 351, variable pitch discharge gantry bracket; 352, variable pitch discharge cylinder; 353, variable pitch discharge connecting plate; 354, variable pitch discharge pressure rod. DETAILED DESCRIPTION

[0021] The present application is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] like Figures 1 to 5As shown, an iron shell pitch-changing device for battery assembly includes a rotating disk device 1, a pitch-changing bracket 31, a pitch-changing conveyor belt mechanism 32, a pitch-changing feeding mechanism 33, a pitch-changing mechanism 34 and a pitch-changing discharging mechanism 35; the rotating disk device 1 includes a rotating disk driving part 11 and a rotating disk 12; the rotating disk driving part 11 is arranged on a frame, the rotating disk 12 is connected to the rotating disk driving part 11, and the rotating disk 12 is provided with a plurality of assembly stations along the circumferential direction, and each assembly station is provided with an assembly tool 13; each assembly tool 13 is provided with four The iron shell placement slots 14 are arranged horizontally and at equal intervals; the variable pitch bracket 31 is arranged on the periphery of the rotating disk 12; the variable pitch feeding mechanism 33 is arranged at the feeding end of the variable pitch bracket 31, and the variable pitch feeding mechanism 33 is used to transport the iron shell to the variable pitch conveyor belt mechanism 32; the variable pitch mechanism 34 includes a variable pitch pushing component 341, a variable pitch support plate 342 and a connecting support plate 343; the variable pitch pushing component 341 and the variable pitch support plate 342 are respectively arranged on both sides of the discharge end of the variable pitch conveyor belt mechanism 32; a plurality of spacings are arranged on the variable pitch support plate 342 The variable pitch channels 3421 are arranged at intervals; the distance between the discharge ends of two adjacent variable pitch channels 3421 is smaller than the distance between the feed ends of two adjacent variable pitch channels 3421; the variable pitch push-in assembly 341 is used to push the iron shell into the variable pitch channel 3421 accordingly; the feed end of the connecting support plate 343 is connected with the discharge end of the variable pitch support plate 342; the connecting support plate 343 is provided with a connecting channel 3431 corresponding to the variable pitch channel 3421; and the feed end of the connecting channel 3431 is connected with the feed end of the variable pitch channel 3421 The connection support plate 343 is connected so that the width between two adjacent connection channels 3431 matches the width between two adjacent iron shell placement slots 14; the connection support plate 343 is provided with a variable-pitch discharge hole 3432 that runs vertically through the discharge end of each connection channel 3431; flexible support pads 3433 are provided on both sides of the variable-pitch discharge hole 3432; the variable-pitch discharge mechanism 35 is provided on the connection support plate 343 and located above the variable-pitch discharge hole 3432, and the variable-pitch discharge mechanism 35 is used to push the iron shell out of the variable-pitch discharge hole 3432. The device can rearrange the iron shells originally arranged in a row, so that the iron shells are transported at a specified spacing, so that they can be better matched to the iron shell placement slots 14 on the rotating disk device 1, which is convenient for orderly transportation of the iron shells, improves the fluency of iron shell feeding, and can accurately fall into the iron shell placement slots 14 on the rotating disk device 1.

[0023] like Figures 3 to 5As shown, the variable pitch conveyor belt mechanism 32 includes a variable pitch drive motor 321, an active variable pitch guide roller, a driven variable pitch guide roller and a variable pitch conveyor belt 322; the variable pitch drive motor 321 is arranged on the variable pitch bracket 31, and the active variable pitch guide roller and the driven variable pitch guide roller are respectively rotatably connected to the feed end and the discharge end of the variable pitch bracket 31; and the variable pitch drive motor 321 is transmission-connected with the active variable pitch guide roller, and the variable pitch conveyor belt 322 is tensionedly connected to the active variable pitch guide roller and the driven variable pitch guide roller; the discharge end of the variable pitch bracket 31 is provided with a variable pitch conveying block 323; the variable pitch conveying block 323 can prevent the iron shell from being conveyed too far and can also position the iron shell. The variable pitch conveyor belt 322 is used to facilitate conveying.

[0024] like Figures 3 to 5 As shown, the variable-pitch feeding mechanism 33 includes a variable-pitch feeding support plate 331, a variable-pitch feeding cylinder 332, a variable-pitch feeding push plate 333 and a variable-pitch feeding limit block 334; the variable-pitch feeding support plate 331 is arranged on one side of the feeding end of the variable-pitch bracket 31; the variable-pitch feeding cylinder 332 is fixedly connected to the variable-pitch feeding support plate 331; the variable-pitch feeding push plate 333 is connected to the telescopic rod of the variable-pitch feeding cylinder 332, and a feeding placement space for preventing iron shells from being formed between the variable-pitch feeding push plate 333 and the variable-pitch feeding support plate 331, through which a row of iron shells can be placed conveniently, and variable-pitch feeding stops 335 are arranged on both sides of the variable-pitch feeding push plate 333 on the variable-pitch feeding support plate 331, and the variable-pitch feeding stops 335 on both sides just correspond to the number of a row of iron shells, so as to better limit a row of iron shells. The variable-pitch feed stopper 334 is arranged on the side opposite to the variable-pitch feed support plate 331 at the feed end of the variable-pitch bracket 31; a variable-pitch limit passage 336 is formed between the variable-pitch feed support plate 331 and the variable-pitch feed stopper 334, and the variable-pitch limit passage 336 can just match a row of iron shells pushed out, thereby better limiting the position of the iron shells, so that the iron shells can be smoothly transported on the variable-pitch conveyor belt 322 without tipping over. The variable-pitch conveying baffle 311 is arranged on both sides of the variable-pitch conveyor belt 322 in the middle of the variable-pitch bracket 31 to prevent the iron shells from tipping over, and the width between the two variable-pitch conveying baffles 311 matches the width of a single iron shell, thereby preventing the iron shells from tipping over during the conveying process.

[0025] like Figures 3 to 5As shown, the variable pitch push assembly 341 includes a variable pitch push support plate 3411, a variable pitch push cylinder 3412 and a variable pitch push connecting plate 3413; the variable pitch push support plate 3411 is arranged on one side of the discharging end of the variable pitch bracket 31; the variable pitch push cylinder 3412 is fixedly connected to the variable pitch push support plate 3411; the variable pitch push connecting plate 3413 is connected to the telescopic rod of the variable pitch push cylinder 3412, and a number of variable pitch push rods 3413 corresponding to the number of variable pitch channels 3421 are arranged on the variable pitch push connecting plate 3413. 414, and the variable pitch push rod 3414 is aligned with the feed end of the variable pitch channel 3421; a variable pitch push rod positioning block 3415 is also provided on the variable pitch push support plate 3411 at the variable pitch push rod 3414; the variable pitch push rod positioning slots 3416 corresponding to the number of positions of the variable pitch push rod 3414 are provided on the variable pitch push rod positioning slots 3416, and the variable pitch push rod positioning slots 3416 can ensure that the variable pitch push rod 3414 will not have position deviation when moving, thereby ensuring that the iron shell is accurately pushed into the variable pitch channel 3421.

[0026] like Figures 3 to 5 As shown, the variable-pitch discharging mechanism 35 includes a variable-pitch discharging gantry bracket 351, a variable-pitch discharging cylinder 352 and a variable-pitch discharging connecting plate 353; the variable-pitch discharging gantry bracket 351 is arranged on the connecting support plate 343; the variable-pitch discharging cylinder 352 is vertically arranged in the middle of the variable-pitch discharging gantry bracket 351, the variable-pitch discharging connecting plate 353 is connected to the bottom telescopic rod of the variable-pitch discharging cylinder 352, and the variable-pitch discharging connecting plate 353 is provided with variable-pitch discharging pressing rods 354 corresponding in number and position to the variable-pitch discharging through holes 3432. The variable-pitch discharging cylinder 352 drives the variable-pitch discharging pressing rods 354 to conveniently press the iron shell out of the variable-pitch discharging through holes 3432 and drop it into the iron shell placement groove 14 of the rotating disk device 1.

[0027] When the device is working, the variable pitch feeding cylinder 332 in the variable pitch feeding mechanism 33 drives the variable pitch feeding push plate 333 to push a row of iron shells into the variable pitch limiting channel 336, and the variable pitch driving motor 321 drives the variable pitch conveyor belt 322 to convey a row of iron shells to the variable pitch mechanism 34, and the variable pitch conveying block 323 is used to position the iron shells; the variable pitch pushing cylinder 3412 in the variable pitch pushing component 341 drives the variable pitch pushing rod 3414 on the variable pitch pushing connecting plate 3413 to push the iron shells into the variable pitch channel 3421, and the distance between two adjacent iron shells is matched with the distance between two adjacent iron shell placement grooves along the trajectory of the variable pitch channel 3421. 14, by pushing the iron shells into the variable pitch channel 3421 one by one, as the iron shells accumulate in the channel, they gradually pass into the connecting channel 3431, and finally reach above the variable pitch discharge hole 3432, and preliminary support is provided at the variable pitch discharge hole 3432 by the flexible support pad 3433 to prevent the iron shells from falling directly, and finally the variable pitch discharge cylinder 352 in the variable pitch discharge mechanism 35 drives the variable pitch discharge pressure rod 354 on the variable pitch discharge connecting plate 353 to press multiple iron shells directly into the corresponding iron shell placement slots 14 at one time, so as to realize the variable pitch adjustment of the iron shells, ensure the smoothness and stability of the entire assembly, and greatly improve the transportation and assembly efficiency.

[0028] The advantage of the utility model is that the iron shell pitch-changing device 3 used for battery assembly can rearrange the iron shells originally arranged in a row, so that the iron shells can be conveyed at a specified spacing, so that they can be better matched to the iron shell placement grooves 14 on the rotating disk device 1, which is convenient for orderly conveying of the iron shells, improves the smoothness of iron shell feeding, and can accurately fall into the iron shell placement grooves 14 on the rotating disk device 1.

Claims

1. An iron shell pitch changing device for battery assembly, characterized in that: The invention comprises a variable-pitch support (31), a variable-pitch conveyor belt mechanism (32), a variable-pitch feeding mechanism (33), a variable-pitch mechanism (34) and a variable-pitch discharging mechanism (35); the variable-pitch conveyor belt mechanism (32) is arranged on the variable-pitch support (31), and the iron shell is horizontally conveyed by the variable-pitch conveyor belt mechanism (32); the variable-pitch feeding mechanism (33) is arranged at the feeding end of the variable-pitch support (31), and the variable-pitch feeding mechanism (33) is used to convey the iron shell to the variable-pitch conveyor belt mechanism (32); the variable pitch mechanism (34) comprises a variable pitch push-in assembly (341), a variable pitch support plate (342) and a connecting support plate (343); the variable pitch push-in assembly (341) and the variable pitch support plate (342) are respectively arranged on both sides of the discharge end of the variable pitch conveyor belt mechanism (32); the variable pitch support plate (342) is provided with a plurality of variable pitch channels (3421) arranged at intervals; the distance between the discharge ends of two adjacent variable pitch channels (3421) is smaller than the distance between the discharge ends of two adjacent variable pitch channels (3421); The variable pitch pushing assembly (341) is used to push the iron shell into the variable pitch channel (3421) accordingly; the feeding end of the connecting support plate (343) is connected with the discharging end of the variable pitch support plate (342); the connecting support plate (343) is provided with a connecting channel (3431) corresponding to the variable pitch channel (3421); and the feeding end of the connecting channel (3431) is connected with the feeding end of the variable pitch channel (3421) The connecting support plate (343) is provided with a variable-pitch discharging through hole (3432) running vertically at the discharging end of each connecting channel (3431); flexible support pads (3433) are provided on both sides of the variable-pitch discharging through hole (3432); the variable-pitch discharging mechanism (35) is provided on the connecting support plate (343) and is located above the variable-pitch discharging through hole (3432), and the variable-pitch discharging mechanism (35) is used to push the iron shell out of the variable-pitch discharging through hole (3432).

2. The iron shell pitch changing device for battery assembly according to claim 1, characterized in that: The variable pitch conveyor belt mechanism (32) includes a variable pitch drive motor (321), an active variable pitch guide roller, a driven variable pitch guide roller and a variable pitch conveyor belt (322); the variable pitch drive motor (321) is arranged on a variable pitch bracket (31), the active variable pitch guide roller and the driven variable pitch guide roller are rotatably connected to the feed end and the discharge end of the variable pitch bracket (31) respectively; the variable pitch drive motor (321) is transmission-connected to the active variable pitch guide roller, the variable pitch conveyor belt (322) is tensionedly connected to the active variable pitch guide roller and the driven variable pitch guide roller; the discharge end of the variable pitch bracket (31) is provided with a variable pitch conveying stopper (323).

3. The iron shell pitch changing device for battery assembly according to claim 1, characterized in that: The variable-pitch feeding mechanism (33) comprises a variable-pitch feeding support plate (331), a variable-pitch feeding cylinder (332), a variable-pitch feeding push plate (333) and a variable-pitch feeding stop block (334); the variable-pitch feeding support plate (331) is arranged on one side of the feeding end of the variable-pitch bracket (31); the variable-pitch feeding cylinder (332) is fixedly connected to the variable-pitch feeding support plate (331); the variable-pitch feeding push plate (333) is connected to the telescopic rod of the variable-pitch feeding cylinder (332), and the variable-pitch feeding push plate (333) is connected to the telescopic rod of the variable-pitch feeding cylinder (332). A feeding space for preventing the iron shell from being placed is formed between the variable-pitch feeding support plate (33) and the variable-pitch feeding support plate (331); variable-pitch feeding stoppers (335) are arranged on both sides of the variable-pitch feeding push plate (333) on the variable-pitch feeding support plate (331); the variable-pitch feeding stopper (334) is arranged on the side of the variable-pitch bracket (31) at the feeding end opposite to the variable-pitch feeding support plate (331); and a variable-pitch limiting channel (336) is formed between the variable-pitch feeding support plate (331) and the variable-pitch feeding stopper (334).

4. The iron shell pitch changing device for battery assembly according to claim 1, characterized in that: The variable-pitch conveying baffles (311) for placing the iron shell on the side of the variable-pitch conveying belt (322) are arranged in the middle of the variable-pitch bracket (31) and on both sides of the variable-pitch conveying baffles (311), and the width between the two variable-pitch conveying baffles (311) matches the width of a single iron shell.

5. The iron shell pitch changing device for battery assembly according to claim 1, characterized in that: The variable pitch push-in assembly (341) comprises a variable pitch push-in support plate (3411), a variable pitch push-in cylinder (3412) and a variable pitch push-in connecting plate (3413); the variable pitch push-in support plate (3411) is arranged on one side of the discharging end of the variable pitch bracket (31); the variable pitch push-in cylinder (3412) is fixedly connected to the variable pitch push-in support plate (3411); the variable pitch push-in connecting plate (3413) is connected to the telescopic rod of the variable pitch push-in cylinder (3412), and the variable pitch push-in connecting plate (3413) is connected to the telescopic rod of the variable pitch push-in cylinder (3412). A plurality of variable pitch push rods (3414) corresponding to the number of the variable pitch channels (3421) are arranged on the variable pitch push rod (3414), and the variable pitch push rod (3414) is aligned with the feed end of the variable pitch channel (3421); a variable pitch push rod positioning block (3415) is also arranged on the variable pitch push support plate (3411) at the variable pitch push rod (3414); and the variable pitch push rod positioning block (3415) is provided with variable pitch push rod positioning grooves (3416) corresponding to the number of positions of the variable pitch push rods (3414).

6. The iron shell pitch changing device for battery assembly according to claim 1, characterized in that: The variable-pitch discharging mechanism (35) comprises a variable-pitch discharging gantry bracket (351), a variable-pitch discharging cylinder (352) and a variable-pitch discharging connecting plate (353); the variable-pitch discharging gantry bracket (351) is arranged on a connecting support plate (343); the variable-pitch discharging cylinder (352) is vertically arranged in the middle of the variable-pitch discharging gantry bracket (351), the variable-pitch discharging connecting plate (353) is connected to the bottom telescopic rod of the variable-pitch discharging cylinder (352), and the variable-pitch discharging connecting plate (353) is provided with variable-pitch discharging pressure rods (354) whose number and position are corresponding to the variable-pitch discharging through holes (3432).

7. The iron shell pitch changing device for battery assembly according to claim 1, characterized in that: The invention also comprises a rotating disk device (1), wherein the rotating disk device (1) comprises a rotating disk driving part (11) and a rotating disk (12); the rotating disk driving part (11) is arranged on a frame, the rotating disk (12) is connected to the rotating disk driving part (11), a plurality of assembly stations are arranged along the circumference of the rotating disk (12), and each assembly station is provided with an assembly tool (13); each of the assembly tools (13) is provided with a plurality of iron shell placement grooves (14) arranged at intervals, and the width between two adjacent connecting channels (3431) matches the width between two adjacent iron shell placement grooves (14).