Stamping equipment for battery pack transfer box pipe fitting machining

Abstract

The invention relates to the technical field of stamping equipment, in particular to stamping equipment for battery pack transfer box pipe fitting machining, which comprises a machine table, an L-shaped stand column and a pipe fitting supporting seat are mounted at the top of the machine table, a stamping cylinder is mounted at the top of the L-shaped stand column, a stamping head is mounted at the telescopic end of the stamping cylinder, and a mandrel assembly is mounted on one side surface of the L-shaped stand column. When the punching air cylinder drives the punching head to conduct primary punching and then ascend, the driving rod drives the driving piece to drive the rotating rod and the cam to rotate by a phase angle, and the corresponding positioning columns are jacked up. When the pipe fitting is punched, the driving piece, the rotating rod and the cam can be driven by the driving rod to rotate by a phase angle, so that the corresponding positioning column is jacked up, the pipe fitting can be directly positioned through the jacked-up positioning column during next punching, punching of the pipe fitting is more accurate, and the punching efficiency of the pipe fitting is improved. And the punching position does not need to be repeatedly adjusted every time punching is conducted, and the punching efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of stamping equipment, and specifically relates to a stamping equipment for processing pipe fittings of a battery pack transfer box. Background Art

[0002] When a lithium battery pack is being transported, it needs to be fixed by a welded transfer box before transportation. When the transfer box is manufactured, it is formed by assembling and welding multiple square pipes. And during the assembly, the square pipes need to be processed such as punched and necked respectively. When the existing square pipe punching equipment punches a square pipe, after one punching is completed, the position of the square pipe needs to be adjusted and precisely measured before the next punching operation. This greatly reduces the working efficiency, and there will also be precision errors in each measurement, affecting subsequent processing. For this reason, the present invention has developed a stamping equipment for processing pipe fittings of a battery pack transfer box to solve the above problems. Summary of the Invention

[0003] The purpose of the present invention is to provide a stamping equipment for processing pipe fittings of a battery pack transfer box, which can quickly and accurately position the punching position of each square pipe and improve the processing efficiency.

[0004] To achieve the above purpose, the technical solution provided by the present invention is as follows: A stamping equipment for processing pipe fittings of a battery pack transfer box, including a machine table. An L-shaped column and a pipe fitting support base are installed on the top of the machine table. A stamping cylinder is installed on the top of the L-shaped column. A stamping head is installed at the telescopic end of the stamping cylinder. A mandrel assembly is installed on one side surface of the L-shaped column; The mandrel assembly includes a mandrel connected to the L-shaped column. One end of the mandrel is inserted into the inner cavity of the pipe fitting support base and is provided with a punching hole. A rotating rod is rotatably connected to the inner cavity of the mandrel. A plurality of cams are installed on the outer wall of the rotating rod, and the protruding parts of each cam are equally angularly distributed in different phases. A plurality of positioning columns corresponding to the cams one by one are slidably connected to the top of the mandrel. A driving member is installed at one end of the rotating rod. A driving rod cooperating with the driving member is installed on the side wall of the telescopic end of the stamping cylinder. When the stamping cylinder drives the stamping head to perform one stamping and then rises, the driving rod drives the driving member to drive the rotating rod and the cam to rotate by a phase angle and jack up the corresponding positioning column.

[0005] Preferably, the driving member includes a rotating gear. One end of the rotating rod passes through the L-shaped column and is connected to the rotating gear through a one-way bearing. The driving rod includes a connecting rod connected to the telescopic end of the stamping cylinder. One end of the connecting rod passes through the L-shaped column and is installed with a rack cooperating with the rotating gear. The L-shaped column is provided with a first sliding groove through it.

[0006] Preferably, the driving member further includes a mounting seat with a hollow interior. A rotating sleeve is rotatably connected to a side wall of the inner cavity of the mounting seat away from the L-shaped column. The rotating gear is mounted on the outer wall of the rotating sleeve. One end of the rotating rod is inserted into the inner cavity of the rotating sleeve. The core shaft is detachably connected to the L-shaped column by bolts. The rotating sleeve and the rotating rod are slidably connected in a key-slot manner.

[0007] Preferably, a limiting sleeve is rotatably connected to a side surface of the mounting seat away from the L-shaped column. One end of the rotating sleeve passes through the inner cavity of the limiting sleeve and is slidably connected to the limiting sleeve. A second limiting key that cooperates with the limiting groove is provided on the inner wall of the limiting sleeve. First and second elastic limiting posts are provided on the outer wall of the rotating sleeve. A limiting hole is formed in the outer wall of the limiting sleeve. When the first elastic limiting post is inserted into the limiting hole, the rack is arranged corresponding to the rotating gear. When the second elastic limiting post is inserted into the limiting hole, the rack is staggered from the rotating gear.

[0008] Preferably, a limiting internal tooth ring that cooperates with the rotating gear is fixedly connected to a side surface of the inner cavity of the mounting seat away from the L-shaped column.

[0009] Preferably, an arc-shaped limiting block is provided at one end of the positioning post inserted into the core shaft, and the arc-shaped limiting block abuts against the outer wall of the cam.

[0010] Preferably, a second chute that cooperates with the positioning post is formed in the outer wall of the core shaft. A plurality of threaded countersunk holes are formed in the outer wall of the core shaft along the direction of the second chute, and the threaded countersunk holes are respectively on both sides of the second chute. A mounting block is slidably connected to the outer wall of the positioning post inserted into the core shaft, and the mounting block is connected to the threaded countersunk hole by bolts.

[0011] Preferably, the cam and the rotating rod are slidably connected in a key-slot manner. Limiting cam plates with an area larger than that of the cam are symmetrically arranged on opposite sides of the cam. The positioning post is located between the two limiting cam plates.

[0012] Preferably, the pipe fitting support seat includes a concave base fixed on the machine table. Two sliding rods are slidably connected to opposite sides of the top of the concave base. A convex cover plate cooperating with the concave base is installed at the tops of the two sliding rods. The top of the convex cover plate is connected to the telescopic end of the stamping cylinder through an elastic connecting member. A through hole cooperating with the stamping head is provided on the convex cover plate. Two sliding strips are symmetrically and slidably connected to opposite side walls of the concave base. Positioning plates are symmetrically installed on one side surfaces of the two sliding strips close to each other. An arc-shaped groove is formed through the sliding strip. A fixing column cooperating with the arc-shaped groove is provided on the side wall of the sliding rod. When the sliding rod descends, the sliding strip is pushed out through the cooperation of the fixing column and the arc-shaped groove. A support plate is slidably connected between opposite side walls of the concave base, and the support plate is located below the positioning plate and the mandrel. Fixing blocks are symmetrically connected to opposite ends of the support plate. The fixing blocks and the sliding strip are provided with cooperating inclined surfaces, and when the sliding strip is pushed out, the support plate is jacked up through the cooperation of the inclined surfaces.

[0013] Preferably, the elastic connecting member includes a fixing ring fixed on the outer wall of the telescopic end of the stamping cylinder. Four fixing rods are equally angularly connected between the fixing ring and the top of the convex cover plate. The fixing rods pass through the fixing ring and are slidably connected to the fixing ring. A spring is sleeved on the outer wall of the fixing ring.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: In the present invention, by arranging a rotating rod and cams with different phase angles in the mandrel, and each cam is correspondingly provided with a positioning column, each time a stamping cylinder punches a pipe fitting once, the driving rod can drive the driving member, the rotating rod and the cam to rotate a phase angle, so as to jack up the corresponding positioning column. When the next punching is carried out, the pipe fitting can be directly positioned by the jacked-up positioning column, thereby making the punching process of the pipe fitting more accurate, and it is not necessary to repeatedly adjust the punching position every time punching is carried out, improving the stamping efficiency. Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 It is a schematic structural diagram of the stamping equipment of the present invention; Figure 2 It is a partial front-sectional structural schematic diagram of the stamping equipment of the present invention; Figure 3 It is a schematic structural diagram of the mandrel assembly in the stamping equipment of the present invention; Figure 4 The front sectional structure schematic diagram of the mandrel assembly in the stamping equipment of the present invention; Figure 5 The connection structure schematic diagram of the rotating rod and the cam in the stamping equipment of the present invention; Figure 6 The structure schematic diagram of the positioning column in the stamping equipment of the present invention; Figure 7 The structure schematic diagram of the driving part in the stamping equipment of the present invention; Figure 8 The structure schematic diagram of the driving rod in the stamping equipment of the present invention; Figure 9 The sectional structure schematic diagram of the pipe fitting support seat in the stamping equipment of the present invention; Figure 10 is Figure 9 The enlarged structure schematic diagram at position A in

[0017] In the attached drawings, the list of components represented by each reference numeral is as follows: 1, machine table; 2, L-shaped column; 3, pipe fitting support seat; 31, concave base; 32, sliding rod; 33, convex cover plate; 34, elastic connecting piece; 341, fixing ring; 342, fixing rod; 343, spring; 35, sliding strip; 36, positioning plate; 37, arc-shaped groove; 38, fixing column; 39, support plate; 310, fixing block; 4, stamping cylinder; 5, stamping head; 6, mandrel assembly; 61, mandrel; 611, second chute; 612, threaded countersunk hole; 62, stamping hole; 63, rotating rod; 64, cam; 641, limiting cam plate; 65, positioning column; 651, arc-shaped limiting block; 652, mounting block; 66, driving part; 661, rotating gear; 662, mounting seat; 663, rotating sleeve; 664, limiting sleeve; 665, first elastic limiting column; 666, second elastic limiting column; 667, limiting hole; 668, limiting internal gear ring; 67, driving rod; 671, connecting rod; 672, rack. Detailed implementation manners

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0019] As Figures 1 - 10 shown: One embodiment of the present invention is: A stamping device for processing pipe fittings of a battery pack transfer box, comprising a machine table 1, an L-shaped column 2 and a pipe fitting support base 3 are installed on the top of the machine table 1, a stamping cylinder 4 is installed on the top of the L-shaped column 2, a stamping head 5 is installed at the telescopic end of the stamping cylinder 4, and a mandrel assembly 6 is installed on one side surface of the L-shaped column 2; The mandrel assembly 6 includes a mandrel 61 connected to the L-shaped column 2. One end of the mandrel 61 is inserted into the inner cavity of the pipe fitting support base 3 and is provided with a stamping hole 62. A rotating rod 63 is rotatably connected to the inner cavity of the mandrel 61. A plurality of cams 64 are installed on the outer wall of the rotating rod 63, and the protruding parts of each cam 64 are equally distributed at different phases. A plurality of positioning posts 65 corresponding to the cams 64 one by one are slidably connected to the top of the mandrel 61. One end of the rotating rod 63 is installed with a driving part 66, and a driving rod 67 cooperating with the driving part 66 is installed on the side wall of the telescopic end of the stamping cylinder 4. When the stamping cylinder 4 drives the stamping head 5 to rise after one stamping, the driving rod 67 drives the driving part 66 to drive the rotating rod 63 and the cam 64 to rotate a phase angle and jack up the corresponding positioning post 65.

[0020] In this embodiment, the driving part 66 includes a rotating gear 661. One end of the rotating rod 63 passes through the L-shaped column 2 and is connected to the rotating gear 661 through a one-way bearing. The driving rod 67 includes a connecting rod 671 connected to the telescopic end of the stamping cylinder 4. One end of the connecting rod 671 passes through the L-shaped column 2 and is installed with a rack 672 cooperating with the rotating gear 661. The L-shaped column 2 is provided with a first sliding groove. When the stamping cylinder stamps the pipe fitting, it drives the connecting rod and the rack to descend. The rack meshes with the rotating gear. And because the rotating gear and the rotating rod are connected through a one-way bearing, the rotating gear will rotate idly. After stamping is completed, the rack rises to drive the rotating gear to rotate in the reverse direction. The rotating gear drives the rotating rod and the cam to rotate a phase angle, so as to jack up a positioning post through a cam and position for the next stamping process. (And in this embodiment, the distances between the positioning posts and the stamping holes are jacked up in sequence from near to far).

[0021] In this embodiment, in order to facilitate the replacement of the mandrel to adapt to the processing of different pipe fittings, the driving part 66 further includes a hollow mounting seat 662. A rotating sleeve 663 is rotatably connected to the side wall of the inner cavity of the mounting seat 662 away from the L-shaped column 2. The rotating gear 661 is installed on the outer wall of the rotating sleeve 663. One end of the rotating rod 63 is inserted into the inner cavity of the rotating sleeve 663. The mandrel 61 and the L-shaped column 2 are detachably connected by bolts. The rotating sleeve 663 and the rotating rod 63 are slidably connected in a key-slot manner. Among them, when the mandrel is installed, one end of the rotating rod is inserted into the inner cavity of the rotating sleeve, and then the mandrel is fixed by bolts. The rotating sleeve and the rotating rod are synchronously rotated through the cooperation of the key and the slot.

[0022] In this embodiment, when different square tubes are to be stamped at the same position, the mounting seat 662 is rotatably connected to the limiting sleeve 664 on one side away from the L-shaped column 2, and one end of the rotating sleeve 663 passes through the inner cavity of the limiting sleeve 664 and is slidably connected to the limiting sleeve 664. The inner wall of the limiting sleeve 664 is provided with a second limiting key that cooperates with the limiting groove, and the outer wall of the rotating sleeve 663 is provided with a first elastic limiting column 665 and a second elastic limiting column 666. The outer wall of the limiting sleeve 664 is provided with a limiting hole 667. When the first elastic limiting column 665 is inserted into the limiting hole 667, the rack 672 is correspondingly arranged with the rotating gear 661. When the second elastic limiting column 666 is inserted into the limiting hole 667, the rack 672 is correspondingly arranged with the rotating gear 661. The wheels 661 are staggered. When punching different positions of the square tube, the first elastic limiting column is inserted into the limiting hole. At this time, the rack and the rotating gear can mesh with each other. Therefore, after each punching is completed, different positioning columns can be lifted up, so that stamping processing can be performed on different positions of the square tube. When processing is performed on the same position of different square tubes, the second limiting column is inserted into the limiting hole by pulling the rotating sleeve. At this time, the rotating gear slides with the rotating sleeve, so that the rotating gear and the rack are staggered. Therefore, the rack will not mesh with the rotating gear during each stamping process, so that the angle of the rotating rod will be kept fixed, so that the positioning column at the same position is always in an ejected state, so that the stamping at the same position can be repeated.

[0023] In this embodiment, in order to ensure that the rotating gear can always maintain a fixed angle when the rotating gear and the rack are staggered, a limiting internal gear ring 668 that cooperates with the rotating gear 661 is fixedly connected to the side of the inner cavity of the mounting seat 662 away from the L-shaped column 2. When the rotating sleeve is pulled, the rotating gear can be snapped into the limiting internal gear ring, so that the angle of the rotating gear and the rotating rod is kept fixed through the mutual snap-fit ​​cooperation between the rotating gear and the limiting internal gear ring.

[0024] In this embodiment, in order to reduce the friction between the positioning column and the cam, an arc-shaped limit block 651 is provided at one end of the positioning column 65 inserted into the core shaft 61 , and the arc-shaped limit block 651 abuts against the outer wall of the cam 64 .

[0025] In this embodiment, in order to adjust the positions of the positioning post and the cam, a second chute 611 that cooperates with the positioning post 65 is provided on the outer wall of the mandrel 61. A plurality of countersunk threaded holes 612 are provided on the outer wall of the mandrel 61 along the direction of the second chute 611, and the countersunk threaded holes 612 are respectively on both sides of the second chute 611. An installation block 652 is slidably connected to the outer wall of the positioning post 65 inserted into the interior of the mandrel 61, and the installation block 652 is connected to the countersunk threaded holes 612 by bolts. The cam 64 is slidably connected to the rotating rod 63 in a key-slot manner. Limiting cam plates 641 with an area larger than that of the cam 64 are symmetrically arranged on opposite sides of the cam 64. The positioning post 65 is located between the two limiting cam plates 641. When adjusting the position of the positioning post, loosen the bolts and then slide the positioning post to adjust its position. Since limiting cam plates are provided on both sides of the cam, the position of the positioning post can be limited, so that the cam can slide synchronously when the positioning post slides, and then lock and fix it again to complete the adjustment of the position of the positioning post.

[0026] In this embodiment, in order to support the mandrel, improve the strength of the mandrel, and facilitate the insertion of the pipe fitting, the pipe fitting support base 3 includes a concave base 31 fixed on the machine table 1. Slide bars 32 are slidably connected to opposite sides of the top of the concave base 31. A convex cover plate 33 that cooperates with the concave base 31 is installed at the tops of the two slide bars 32. The top of the convex cover plate 33 is connected to the telescopic end of the stamping cylinder 4 through an elastic connecting member 34. A through hole that cooperates with the stamping head 5 is provided on the convex cover plate 33. Slide strips 35 are symmetrically and slidably connected to opposite side walls of the concave base 31. Positioning plates 36 are symmetrically installed on one side surfaces of the two slide strips 35 that are close to each other. Arc-shaped grooves 37 are formed through the slide strips 35. Fixed columns 38 that cooperate with the arc-shaped grooves 37 are provided on the side walls of the slide bars 32. When the slide bars 32 descend, the slide strips 35 are pushed out through the cooperation of the fixed columns 38 and the arc-shaped grooves 37. A support plate 39 is slidably connected between opposite side walls of the concave base 31, and the support plate 39 is located below the positioning plates 36 and the mandrel 61. Fixed blocks 310 are symmetrically connected to opposite ends of the support plate 39. The fixed blocks 310 and the slide strips 35 are provided with cooperating inclined surfaces. When the slide strips 35 are pushed out, the support plate 39 is jacked up through the cooperation of the inclined surfaces. The surfaces of the protruding part of the convex cover plate, the positioning plates, and the support plate are all made of rubber. When installing the pipe fitting on the mandrel, since the convex cover plate, the positioning plates, and the support plate are all far from the mandrel, there is a sufficiently large space in the pipe fitting support base to install the pipe fitting, thus facilitating the installation of the pipe fitting. During stamping, the stamping cylinder drives the convex cover plate and the stamping block to descend, synchronously driving the slide bars to descend. The slide bars push the slide strips and the positioning plates out through the cooperation of the fixed columns and the arc-shaped grooves, and at the same time jack up the support plate. The positioning plates center the pipe fitting, and the support plate supports the bottom of the pipe fitting (indirectly supports the end of the mandrel). When the convex cover plate contacts the pipe fitting, relative sliding occurs between the stamping block and the convex cover plate under the action of the elastic connecting member, so that the stamping block penetrates through the convex cover plate to stamp the pipe fitting.

[0027] In this embodiment, the elastic connecting member 34 includes a fixed ring 341 fixed on the outer wall of the telescopic end of the stamping cylinder 4. Four fixed rods 342 are connected to the top of the convex cover plate 33 at equal angles between the fixed ring 341. The fixed rods 342 pass through the fixed ring 341 and are slidably connected to the fixed ring 341. A spring 343 is sleeved on the outer wall of the fixed ring 341.

[0028] In this embodiment, in order to be able to install different numbers of cams 64 according to the number of punching holes (that is, the more cams there are, the smaller the phase angle difference between the cams), the connecting rod 671 of the driving rod 67 is set to be L-shaped, and the rack 672 is sleeved on the outer wall of the connecting rod 671 and is slidably connected to the connecting rod 671, so as to be able to adjust the number of teeth meshed between the rack 672 and the rotating gear 661, so that the rotating gear 661 can be rotated by different angles during one meshing process, so as to be able to install different numbers of cams 64 (such as Figure 7 as shown).

[0029] The specific working process of this embodiment is as follows: When punching the pipe fitting, the positioning column 65 near the punching hole 62 is in the jacked-up state. The staff inserts the square pipe from the end of the mandrel 61, and then the end of the square pipe abuts against the positioning column 65 to complete the positioning of the first punching position of the square pipe. Then, the punching cylinder 4 is started, and the punching cylinder 4 drives the driving rod 67, the punching head 5 and the convex cover plate 33 to descend synchronously (the punching head 5 and the convex cover plate 33 can descend synchronously due to the supporting force of the spring 343); Among them, the convex cover plate 33 drives the sliding rod 32 to descend. The fixed column 38 on the side wall of the sliding rod 32 pushes the sliding strip 35 to slide outwards through the cooperation with the arc groove 37, so as to push the positioning plate 36 to slide outwards to squeeze both sides of the square pipe, so that the square pipe can be centered. At the same time, during the process of the sliding strip 35 sliding outwards, the sliding strip 35 synchronously pushes the support plate 39 to slide upwards, so as to support the square pipe from the bottom. After the protruding part at the bottom of the convex cover plate 33 touches the top of the square pipe, the punching cylinder 4 continues to descend. At this time, the punching head 5 overcomes the resistance of the spring 343 and penetrates through the convex cover plate 33 to punch the square pipe, completing one punching operation.

[0030] After the punching is completed, the punching cylinder 4 retracts and drives the driving rod 67, the punching head 5 and the convex cover plate 33 to rise synchronously. Among them, the convex cover plate 33 rising drives the sliding rod 32 to rise, pulling the sliding strip 35 and the positioning plate 36 back. The support plate 39 returns to its original position under its own gravity, and then the position of the square pipe is adjusted. And during the rising process of the driving rod 67, the rack 672 on the driving rod 67 meshes with the rotating gear 661 and drives the rotating gear 661 to rotate a phase angle (and after the rack 672 rises to the highest position, the rack 672 still remains meshed with the rotating gear 661, so as to ensure the fixing of the angle of the rotating gear 661 through the mutual engagement of the rack 672 and the rotating gear 661). Thus, the adjacent positioning columns 65 are jacked up by the cam 64 of this phase, so that the square pipe can be positioned when the square pipe is adjusted, and then the second punching process is carried out. So on and so forth, punching the same surface of the square pipe.

[0031] When each square tube is processed only once, the staff first squeezes the first elastic limit post 665 to make the first elastic limit post 665 disengage from the limit hole 667, and then pulls the rotating sleeve 663. The rotating sleeve 663 drives the rotating gear 661 to slide, so that the rotating gear 661 is misaligned with the rack 672. After the misalignment, the positioning post 65 at the corresponding position is jacked up by rotating the rotating sleeve 663. Then, continue to pull the rotating sleeve 663 so that the second elastic limit post 666 is snapped into the limit hole 667, and at the same time, the rotating gear 661 is snapped into the limit internal gear ring 668, so that the position and angle of the rotating sleeve 663 are both fixed. In this way, when the rack 672 descends, it will not drive the rotating gear 661 and the rotating rod 63 to rotate, so that the positioning post 65 at this position can always maintain the jacked-up state, and the same position of different square tubes can be processed.

[0032] When the position of the positioning post 65 needs to be adjusted, first loosen the bolts of the mounting block 652, and then slide the positioning post 65 along the second chute. Since the limiting cam plates 641 are arranged on both sides of the cam 64, the sliding of the positioning post 65 can also drive the cam 64 to slide synchronously. After the adjustment is in place, re-lock the mounting block 652 to complete the adjustment of the position of the positioning post 65.

[0033] In the present invention, unless otherwise clearly defined and limited, terms such as "installation", "setting", "connection", "fixation", "swivel connection" and the like shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. Unless otherwise clearly defined, for those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0034] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that these embodiments can be modified without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A stamping device for processing pipe fittings of a battery pack transfer box, characterized in that: It includes a machine table (1), on the top of which an L-shaped column (2) and a pipe fitting support seat (3) are installed. On the top of the L-shaped column (2), a stamping cylinder (4) is installed. On the telescopic end of the stamping cylinder (4), a stamping head (5) is installed. On one side of the L-shaped column (2), a mandrel assembly (6) is installed. The mandrel assembly (6) includes a mandrel (61) connected to the L-shaped column (2). One end of the mandrel (61) is inserted into the inner cavity of the pipe fitting support seat (3) and is provided with a stamping hole (62). A rotating rod (63) is rotatably connected to the inner cavity of the mandrel (61). A number of cams (64) are installed on the outer wall of the rotating rod (63), and the protruding parts of each cam (64) are evenly distributed at different phases. A number of positioning columns (65) corresponding to the cams (64) one by one are slidably connected to the top of the mandrel (61). One end of the rotating rod (63) is provided with a driving part (66). On the side wall of the telescopic end of the stamping cylinder (4), a driving rod (67) cooperating with the driving part (66) is installed. When the stamping cylinder (4) drives the stamping head (5) to rise after one stamping, the driving rod (67) drives the driving part (66) to drive the rotating rod (63) and the cam (64) to rotate a phase angle and jack up the corresponding positioning column (65).

2. The stamping device for processing pipe fittings of a battery pack transfer box according to claim 1, characterized in that: The driving part (66) includes a rotating gear (661). One end of the rotating rod (63) passes through the L-shaped column (2) and is connected to the rotating gear (661) through a one-way bearing. The driving rod (67) includes a connecting rod (671) connected to the telescopic end of the stamping cylinder (4). One end of the connecting rod (671) passes through the L-shaped column (2) and is provided with a rack (672) cooperating with the rotating gear (661). The L-shaped column (2) is provided with a first chute running through it.

3. The stamping device for processing pipe fittings of a battery pack transfer box according to claim 2, characterized in that: The driving part (66) further includes a hollow mounting seat (662). On the side wall of the inner cavity of the mounting seat (662) far from the L-shaped column (2), a rotating sleeve (663) is rotatably connected. The rotating gear (661) is installed on the outer wall of the rotating sleeve (663). One end of the rotating rod (63) is inserted into the inner cavity of the rotating sleeve (663). The mandrel (61) and the L-shaped column (2) are detachably connected by bolts. The rotating sleeve (663) and the rotating rod (63) are slidably connected in a key-slot manner.

4. A stamping device for processing pipe fittings of a battery pack transfer box according to claim 3, characterized in that: A side of the mounting seat (662) away from the L-shaped column (2) is rotatably connected to the limiting sleeve (664); one end of the rotating sleeve (663) passes through the inner cavity of the limiting sleeve (664) and is slidably connected to the limiting sleeve (664); the inner wall of the limiting sleeve (664) is provided with a second limiting key that cooperates with the limiting groove; the outer wall of the rotating sleeve (663) is provided with a first elastic limiting column (665) and a second elastic limiting column (666); the outer wall of the limiting sleeve (664) is provided with a limiting hole (667); when the first elastic limiting column (665) is inserted into the limiting hole (667), the rack (672) and the rotating gear (661) are arranged correspondingly; when the second elastic limiting column (666) is inserted into the limiting hole (667), the rack (672) and the rotating gear (661) are arranged staggered.

5. A stamping device for processing pipe fittings of a battery pack transfer box according to claim 4, characterized in that: A limiting internal gear ring (668) that cooperates with the rotating gear (661) is fixedly connected to a side surface of the inner cavity of the mounting seat (662) that is away from the L-shaped column (2).

6. A stamping device for processing pipe fittings of a battery pack transfer box according to claim 1, characterized in that: An arc-shaped limit block (651) is provided at one end of the positioning column (65) inserted into the interior of the core shaft (61), and the arc-shaped limit block (651) abuts against the outer wall of the cam (64).

7. A stamping device for processing pipe fittings of a battery pack transfer box according to claim 6, characterized in that: The outer wall of the core shaft (61) is provided with a second slide groove (611) that cooperates with the positioning column (65), and the outer wall of the core shaft (61) is provided with a plurality of threaded countersunk holes (612) along the direction of the second slide groove (611), and the threaded countersunk holes (612) are respectively located on both sides of the second slide groove (611), and the positioning column (65) is inserted into the outer wall of the core shaft (61) and is slidably connected with a mounting block (652), and the mounting block (652) and the threaded countersunk holes (612) are connected by bolts.

8. A stamping device for processing pipe fittings of a battery pack transfer box according to claim 7, characterized in that: The cam (64) is slidably connected to the rotating rod (63) by means of a key-slot, and two opposite sides of the cam (64) are symmetrically provided with limiting cam plates (641) having an area larger than the cam (64), and the positioning column (65) is located between the two limiting cam plates (641).

9. The stamping device for processing pipe fittings of a battery pack transfer box according to claim 1, characterized in that: The pipe fitting support base (3) includes a concave base (31) fixed on the machine table (1). On opposite sides of the top of the concave base (31), there are sliding rods (32) slidably connected. At the tops of the two sliding rods (32), there is a convex cover plate (33) that cooperates with the concave base (31). The top of the convex cover plate (33) is connected to the telescopic end of the stamping cylinder (4) through an elastic connecting member (34), and the convex cover plate (33) is provided with a through hole that cooperates with the stamping head (5). On opposite side walls of the concave base (31), there are sliding strips (35) slidably connected symmetrically. On one side of the two sliding strips (35) close to each other, there are positioning plates (36) symmetrically installed. The sliding strip (35) is provided with an arc-shaped groove (37) penetrating through it. On the side wall of the sliding rod (32), there is a fixing column (38) that cooperates with the arc-shaped groove (37). When the sliding rod (32) descends, the sliding strip (35) is pushed out through the cooperation of the fixing column (38) and the arc-shaped groove (37). Between opposite side walls of the concave base (31), there is a support plate (39) slidably connected, and the support plate (39) is located below the positioning plate (36) and the mandrel (61). At opposite ends of the support plate (39), there are fixing blocks (310) symmetrically connected. The fixing blocks (310) and the sliding strip (35) are provided with cooperating inclined surfaces, and when the sliding strip (35) is pushed out, the support plate (39) is lifted through the cooperation of the inclined surfaces.

10. A stamping device for processing pipe fittings of a battery pack transfer box according to claim 9, characterized in that: The elastic connecting member (34) includes a fixing ring (341) fixed on the outer wall of the telescopic end of the stamping cylinder (4). Between the fixing ring (341) and the top of the convex cover plate (33), there are four fixing rods (342) connected at equal angles. The fixing rods (342) pass through the fixing ring (341) and are slidably connected to the fixing ring (341). A spring (343) is sleeved on the outer wall of the fixing ring (341).

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