Multi-station adjustable iron core punching sheet stamping device

Abstract

The invention discloses a multi-station adjustable iron core punching sheet stamping device, and relates to the technical field of iron core punching sheet stamping, the multi-station adjustable iron core punching sheet stamping device comprises a machine body, a conveying module and a stamping module on the machine body, a first assembly and a punching sheet transferred by the first assembly; the first assembly comprises a negative pressure suction pump fixedly connected to the bottom face of the conveying module, the bottom end of the negative pressure suction pump is fixedly connected with a support, and according to the punching device, single-point measurement of the infrared distance measuring sensors is utilized, and whether a suction cup is damaged or not can be judged through morphological changes under the action of self gravity of a punching sheet and numerical comparison of the four infrared distance measuring sensors; the detection mode is based on the physical principle, an additional complex detection device is not needed, the position of the damaged suction cup can be accurately positioned, when a certain suction cup is damaged to cause insufficient suction, the monitoring value of the corresponding infrared distance measuring sensor is lower than that of the other three positions, the suction cup problem can be found in time, punching sheet conveying abnormity caused by suction cup damage is avoided, and the production efficiency is improved. And a guarantee is provided for stable operation of equipment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of core punching stamping, in particular to a multi-station adjustable core punching stamping device. BACKGROUND

[0002] The stator core is a key mechanical component of a large equipment such as a ship working motor, and its manufacturing process has strict requirements. The manufacturing of the stator core requires that a plurality of stator punching sheets after stamping are stacked layer by layer, riveted after being buckled and slotted, to form a stator block, and then the plurality of stator blocks are sequentially spliced into a stator layer around an axis, and the plurality of stator layers are rotationally misaligned to align the welds, and then integrally welded and fixed, to finally form the core, and then the core needs to go through processes such as wire embedding and paper laying.

[0003] In the prior art, the core punching stamping device mainly consists of a conveying component and a punching forming component. The conveying component forms a negative pressure adsorption with the punching sheet surface through a vacuum chuck, picks up the punching sheet from a material pile or a feeding platform by means of the movement function of a mechanical arm, and then feeds the punching sheet to a punching area disc according to a program. However, although there is a stress relieving treatment step for the punching sheet before stamping, there are still many factors that can cause the punching sheet to be warped and wavy during the transfer and stacking process. Moreover, the prior art lacks an auxiliary assembly for effectively detecting the punching sheet during the punching process near the punching action, which can cause the deformed punching sheet to be easily stuck in the track or positioning groove during feeding, resulting in skewing, and thus affecting the manufacturing precision and quality of the stator core.

[0004] At the same time, when the vacuum chuck is used to adsorb and transfer the punching sheet, the center of the vacuum chuck and the gravity center of the adsorbed punching sheet are often inconsistent, which can cause the punching sheet to tilt and fall off during the transfer process, affecting the stability and accuracy of the conveying. In addition, if the vacuum chuck is damaged during long-term use, the suction force will be unstable, which can also cause problems such as abnormal conveying of the punching sheet. However, the prior art still has obvious drawbacks in these detection feedback means, and cannot timely and accurately find and solve the above problems, which seriously restricts the efficiency and quality of the stator core manufacturing.

[0005] Therefore, the present application provides a multi-station adjustable core punching stamping device to solve the above problems. SUMMARY

[0006] Therefore, the present application provides a multi-station adjustable core punching stamping device to solve the above problems.

[0007] In order to achieve the above object, the present application provides the following technical scheme: A multi-station adjustable core punching stamping device, comprising: a machine body and a conveying module and a stamping module thereon, further comprising: a first assembly and a punching sheet transferred by the first assembly; the first assembly comprises a negative pressure suction pump fixedly connected to the bottom surface of the conveying module, the bottom end of the negative pressure suction pump is fixedly connected with a support, a long slot is symmetrically and through provided on the support; a suction disc is arranged below the support, a through pipe is fixedly and through connected to the suction disc, a fastener A and a fastener B are sleeved on the through pipe, the fastener A and the fastener B are tightly attached to the upper and lower surfaces of the support; a first air pipe is fixedly and communicatively connected to the top end of the through pipe; the punching sheet is adsorbed by the suction disc.

[0008] As an improvement, a second assembly is further included; the second assembly comprises a U-shaped piece, a second air pipe is fixedly and communicatively connected to the U-shaped piece, a strip-shaped cavity is provided in the U-shaped piece; the U-shaped piece is fixedly and clippingly connected to the support.

[0009] As an improvement, a moving arc strip is slidingly connected in the strip-shaped cavity, a limiting piece is fixedly connected to the bottom end of the moving arc strip, a telescopic clamp A is arranged on the lower part of the limiting piece, half of the telescopic clamp A is located in the inner cavity of the limiting piece and half of the telescopic clamp A is exposed from the inner cavity of the limiting piece; a recess is provided on the upper surface of the telescopic clamp A, an infrared distance measuring sensor A is fixedly connected in the recess of the telescopic clamp A.

[0010] As an improvement, a telescopic clamp B is arranged on the upper part of the limiting piece, a recess is provided on the lower surface of the telescopic clamp B, an infrared distance measuring sensor B is fixedly connected in the recess of the telescopic clamp B.

[0011] As an improvement, the support is X-shaped.

[0012] As an improvement, the suction disc is designed as a double-layer structure.

[0013] As an improvement, the suction disc is of an organ disc adsorption type.

[0014] Compared with the prior art, the present application provides a multi-station adjustable core punching stamping device, which has the following beneficial effects: 1, through the design of the overall device, the following benefits can be brought to the overall work: improving the stability of the punching sheet transfer process: the device can automatically adjust the center alignment of the suction disc and the punching sheet, effectively solving the problem of punching sheet inclination and falling caused by the inconsistency between the center of the suction disc and the gravity center of the punching sheet in the prior art; the punching sheet maintains a balanced state during the transfer process, reducing the secondary damage to the punching sheet caused by unstable transfer, and providing a stable blank basis for the subsequent stamping process.

[0015] Improve the precision of stamping processing: Because the punch can maintain accurate position and posture when conveying to the stamping area, the situation of punch skewing and being stuck in the track or positioning groove is avoided; This makes the punch accurately positioned during the stamping process, ensures that the size precision and shape precision of the stator punch meet the design requirements, and thus improves the manufacturing quality of the stator core.

[0016] Improve the overall operation efficiency of the equipment: The stability of punch transfer and conveying is improved, reducing the time of equipment downtime adjustment due to abnormal punch conveying; At the same time, the punch stuck in the track and other faults are avoided, so that the stamping equipment can run continuously and efficiently, greatly improving the production efficiency and reducing the time cost and labor cost in the production process.

[0017] Prolong the service life of the suction cup: By automatically adjusting the center alignment, the suction cup is evenly stressed when sucking the punch, reducing the situation of local excessive stress caused by gravity offset; This can reduce the wear degree of the suction cup in long-term use, avoid frequent replacement due to suction cup damage, prolong the service life of the suction cup, and reduce the equipment maintenance cost.

[0018] 2、The present application utilizes the weight of the punch itself, and through the design of infrared distance sensor A and infrared distance sensor B, the following benefits can be achieved: Accurate detection of suction cup damage state: The single-point measurement of infrared distance sensor A can detect the shape change of the punch under its own gravity, and the four infrared distance sensors A can compare the values to determine whether the suction cup is damaged; The above detection method is based on physical principles and does not require additional complex detection devices, which can accurately locate the damaged suction cup position. When a suction cup is damaged and the suction force is insufficient, the corresponding infrared distance sensor A monitoring value will be lower than the other three, which can timely detect the suction cup problem and avoid punch conveying abnormalities caused by suction cup damage, providing protection for the stable operation of the equipment.

[0019] Efficient identification of punch deformation: Double-point measurement through the cooperation of infrared distance sensor A and infrared distance sensor B judges whether the punch circumferential edge exists warping and wavy deformation by whether the four groups of data are consistent; This method fully utilizes the punch's own gravity as the detection premise and does not require additional processing of the punch. It can be detected in real time during the stamping process, efficiently identify the deformation problem of the punch, and timely detect unqualified punches to prevent the punch from being stuck in the positioning groove and other device components due to deformation, affecting the subsequent stamping process.

[0020] Ensure the smooth progress of the stamping process: through timely detection of broken suction cups and deformed punches, appropriate measures can be taken in advance, such as replacing broken suction cups and removing deformed punches, to avoid equipment downtime or produce unqualified stamping parts; ensure the continuity and stability of the stamping process, improve the production efficiency of the equipment, and reduce the failure cost and scrap rate in the production process.

[0021] 3、The present application adopts X-shaped design of the support, instead of traditional cross-shaped design, which can bring the following benefits: improve the accuracy of suction cup breakage detection: compared with traditional cross-shaped structure, X-shaped suction cup design can more evenly distribute the suction force of the suction cup at the center of the punch, avoiding uneven stress on the edge of the punch caused by the support structure; during suction cup breakage detection, the circumferential edge of the punch can naturally sag based on its own gravity, making the detection data of the four infrared distance sensors A more truly reflect the suction force state of the suction cup, effectively eliminating the interference of uneven sagging of the punch material on the detection result, and ensuring the accuracy of single-point measurement to judge the suction cup breakage.

[0022] Optimize the sagging action of the circumferential edge of the punch: the structural design of the X-shaped suction cup can reduce the obstruction during the sagging process of the circumferential edge of the punch, making the punch more smoothly present the state of unchanged center position and circumferential sagging under the action of its own gravity; the above design makes the punch sagging action more standardized, facilitating accurate measurement of the distance between the circumferential edge and the sensor by the infrared distance sensor A, providing a more standard detection reference for double-point measurement of punch deformation, and improving the efficiency and reliability of punch deformation identification.

[0023] Enhance the stability of the support structure: the geometric structure of the X-shaped suction cup has stronger stability and bearing capacity, which can reduce the influence of support deformation on the detection process when supporting the punch; even in the long-term use process, it can maintain the stability of the structure, ensure that the punch is in a stable state during the detection process, avoid the detection data deviation caused by the support shaking or deformation, and provide reliable structural support for suction cup breakage and punch deformation detection.

[0024] Improve the applicability of the detection system: the X-shaped suction cup design can better adapt to punches of different specifications and materials, regardless of the size or material properties of the punch, the structure advantage can ensure the sagging action of the circumferential edge of the punch, so that the detection system can perform well when facing different types of punches, improving the applicability and universality of the entire detection system, and reducing the adjustment cost of the equipment for different punch detection.

[0025] 4、The application adopts C-shaped design for the limiting piece, which can bring the following benefits compared with flat sheet design: effectively offsetting the influence of equipment operation vibration: compared with flat sheet design, the C-shaped structure of the limiting piece has stronger structural rigidity and elastic buffering capacity; during equipment operation, the C-shaped limiting piece can absorb vibration energy through its own structural deformation, reducing the direct impact of vibration on the punch; in combination with the elastic clamping action of the telescopic clamp A and the infrared distance sensor B, a multiple shock absorption structure can be formed, effectively inhibiting the displacement or shaking of the punch caused by equipment vibration, and ensuring that the punch remains in a stable state during transfer.

[0026] Resisting the risk caused by abnormal suction of the suction cup: when the suction cup has abnormal suction, the punch may fall off due to insufficient suction force; the groove structure of the C-shaped limiting piece can form physical limiting from the side, so that even if the suction force of the suction cup decreases, the punch will be limited in the C-shaped groove, avoiding direct falling; at the same time, the clamping force of the telescopic clamp cooperates with the limiting action of the C-shaped structure to form a double protection mechanism when the negative pressure is abnormal, greatly reducing the probability of punch falling off.

[0027] Eliminating the punch deviation caused by wind flow: during the movement of the punch, the internal airflow of the equipment or the external environmental wind flow will cause the punch to deviate; the closed groove design of the C-shaped limiting piece can form a protective barrier around the punch, blocking the wind flow from directly acting on the surface of the punch; in combination with the clamping and fixing of the telescopic clamp on the edge of the punch, the horizontal force generated by the wind flow can be effectively offset, ensuring the smooth movement of the punch along the predetermined track and avoiding positioning deviation caused by wind flow.

[0028] Providing a stable installation base for detection components: the limiting piece with C-shaped structure can provide a stable installation platform for detection components such as infrared distance sensors; compared with flat sheet design, the three-dimensional space layout of C-shaped structure is more convenient for multi-angle installation and debugging of sensors, ensuring that the detection components and the punch maintain accurate relative positional relationship, providing a reliable installation environment for suction cup damage detection and punch deformation detection, and ensuring the accuracy of detection data.

[0029] Enhancing the reliability of the punch transfer process: the combined design of the C-shaped limiting piece and the telescopic clamp establishes a multiple protection system of clamping, limiting and buffering; various potential risk factors such as equipment vibration, negative pressure abnormality and wind flow interference can be effectively addressed through this structural design, significantly improving the stability and safety of the punch during the transfer process; the above design greatly reduces the occurrence of punch deviation, falling and other faults, improving the continuity and reliability of the entire punch processing flow. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a perspective view of the main structure of the application.

[0031] Figure 2 Front view of main structure of the present application.

[0032] Figure 3 Front view of main structure of the present application. Figure 2 Enlarged view of structure at A in the present application.

[0033] Figure 4 Structure diagram related to suction disc, punch, and limiting member in the present application.

[0034] Figure 5 Structure exploded view of the present application.

[0035] Figure 6 Top view of structure of first component, punch, and second component in the present application.

[0036] Figure 7 Structure diagram related to bar-shaped cavity, moving arc strip, fastener A, and fastener B in the present application.

[0037] Figure 8 Structure diagram related to limiting member, telescopic clamp A, infrared distance measuring sensor A, and telescopic clamp B in the present application.

[0038] Figure 9 Structure diagram related to limiting member, telescopic clamp A, telescopic clamp B, and infrared distance measuring sensor B in the present application.

[0039] In the figure: 1, machine body; 2, conveying module; 3, punch module.

[0040] 4, first component; 401, negative pressure suction pump; 402, support; 403, long slot; 404, suction disc; 405, through pipe; 406, fastener A; 407, fastener B; 408, first air pipe.

[0041] 5, punch.

[0042] 6, second component; 601, U-shaped member; 602, second air pipe; 603, bar-shaped cavity; 604, moving arc strip; 605, limiting member; 606, telescopic clamp A; 607, infrared distance measuring sensor A; 608, telescopic clamp B; 609, infrared distance measuring sensor B. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0044] The present application will be further described in detail below according to the accompanying drawings and embodiments.

[0045] Embodiment: please refer to Figures 1 to 4 , Figure 7 shown: to solve the problems mentioned in the technical scheme, the embodiment of the application provides a multi-station adjustable core punching stamping device, comprising: a body 1 and its conveying module 2 and stamping module 3 on the body 1, further comprising: a first assembly 4 and a punching sheet 5 transferred by the first assembly 4.

[0046] The first assembly 4 comprises a negative pressure suction pump 401 fixedly connected to the bottom surface of the conveying module 2, the bottom end of the negative pressure suction pump 401 is fixedly connected with a bracket 402, the bracket 402 is symmetrically provided with a long slot 403 through the bracket 402; a suction cup 404 is arranged below the bracket 402, the suction cup 404 is fixedly connected with a through pipe 405 through the suction cup 404, the through pipe 405 is sleeved with a fastener A 406 and a fastener B 407, the fastener A 406 and the fastener B 407 are tightly attached to the upper and lower surfaces of the bracket 402; the top end of the through pipe 405 is fixedly connected with a first air pipe 408; the punching sheet 5 is adsorbed by the suction cup 404.

[0047] Among them: the first assembly 4 is used for adaptive adjustment and adsorption transfer according to the size of the punching sheet 5.

[0048] The bracket 402 is X-shaped.

[0049] The through pipe 405 can move in the long slot 403, so as to fix the suction cup 404 on different positions of the bracket 402 with the aid of the fastener A 406 and the fastener B 407.

[0050] The first air pipe 408 is connected with the negative pressure suction pump 401.

[0051] The suction cup 404 is designed as double layers, which can be implemented as an organ disc adsorption type.

[0052] Further embodiment: please refer to Figure 3 , Figure 4 , Figures 6 to 9 shown: the second assembly 6 comprises a U-shaped piece 601, the U-shaped piece 601 is fixedly connected with a second air pipe 602, the U-shaped piece 601 is provided with a strip-shaped cavity 603, the U-shaped piece 601 is fixedly connected with a bracket 402, the strip-shaped cavity 603 is slidably connected with a moving arc strip 604, the bottom end of the moving arc strip 604 is fixedly connected with a limiting piece 605, the lower part of the limiting piece 605 is provided with a telescopic clamp A 606, half of the telescopic clamp A 606 is located in the inner cavity of the limiting piece 605, and the other half is exposed from the inner cavity of the limiting piece 605, a recess is formed in the upper surface of the telescopic clamp A 606, an infrared distance measuring sensor A 607 is fixedly connected in the recess of the telescopic clamp A 606, the upper part of the limiting piece 605 is provided with a telescopic clamp B 608, a recess is formed in the lower surface of the telescopic clamp B 608, and an infrared distance measuring sensor B 609 is fixedly connected in the recess of the telescopic clamp B 608.

[0053] The second component 6 is used to correct the offset state of the punched sheet 5 fixed by the first component 4.

[0054] The second air pipe 602 is fixedly communicated with the negative pressure suction pump 401; and the limiting member 605 is in the shape of C.

[0055] The limiting member 605 is used to limit the pushed and offset punched sheet 5.

[0056] The telescopic clamp A 606 and the telescopic clamp B 608 can be used to fasten the punched sheet 5 during the transfer process.

[0057] It should be noted that the detection feedback principle of whether the suction cup 404 is damaged is single-point measurement: under the premise that the punched sheet 5 is adsorbed by the suction cup 404 on the support 402, its own gravity will make it change from a flat sheet to a state that the central position is unchanged and the circumference is in a drooping state, that is, the circumference of the punched sheet 5 is lower than the central height; at this time, the infrared distance sensor A 607 located on the telescopic clamp A 606 below the punched sheet 5 will measure the distance between itself and the circumference of the punched sheet 5, and at the same time, through the total controller and the other three infrared distance sensors A 607, if the four values are consistent, it indicates that the suction cups 404 at the four corners of the support 402 are not damaged at this time, if one of them is damaged, the value monitored by the infrared distance sensor A 607 at this place will be lower than the other three places.

[0058] The detection feedback principle of whether the punched sheet 5 has circumferential edge warping and wave deformation is double-point measurement: when the infrared distance sensor A 607 is used in cooperation with the infrared distance sensor B 609, the circumferential edge warping and wave deformation of the punched sheet 5 can be detected; specifically, one infrared distance sensor A 607 and the infrared distance sensor B 609 form a group, and the infrared distance sensor A 607 and the infrared distance sensor B 609 measure the distance to the circumferential edge of the punched sheet 5; if the four groups of data are consistent, it means that the punched sheet 5 is not deformed, and if the four groups of data are not consistent, it means that the punched sheet 5 is deformed.

[0059] The working principle of all the above embodiments is as follows: in use, the positions of the suction cups 404 on the support 402 are adaptively adjusted according to the size of the punched sheet 5 to be punched; first, the fastener B 407 connected to the through pipe 405 is loosened, then the position of the through pipe 405 in the long slot 403 formed in the support 402 is adjusted, and after the adjustment is completed, the adsorption and transfer action of the punched sheet 5 can be performed.

[0060] Further, the first component 4 is transported to the position of the stacked punch sheet 5 by the conveying module 2, then the suction cup 404 can adsorb the punch sheet 5 by starting the negative pressure suction pump 401 and with the assistance of the negative pressure suction pump 401, the through pipe 405 and the first air pipe 408; after adsorption, the punch sheet 5 can be transferred to the position of the stamping module 3, and in the transfer process, the second component 6 can perform center correction and deformation detection on the suction cup 404 and the punch sheet 5 adsorbed by the suction cup 404, as follows: first, with the assistance of the second air pipe 602 connected with the negative pressure suction pump 401, the gas in the strip-shaped cavity 603 in the U-shaped part 601 is sucked, and in the process of suction, the moving arc strip 604 sliding in the strip-shaped cavity 603 will bring the limiting part 605 at the bottom end to approach the circumferential edge of the punch sheet 5 and finally clamp the punch sheet 5; after clamping, the punch sheet 5 will have a situation of falling down at the circumferential edge due to its own gravity, at this time, the infrared distance sensor A 607 on the telescopic clamp A 606 below the punch sheet 5 will measure the distance between itself and the circumferential edge of the punch sheet 5, and at the same time, through the information comparison of the total controller and the other three infrared distance sensors A 607, if the four values are consistent, it means that the four suction cups 404 on the support 402 are not damaged at this time, if one of them is damaged, the value monitored by the infrared distance sensor A 607 here will be lower than the other three, so as to complete the damage detection of the suction cup 404.

[0061] Further, when the infrared distance sensor A 607 is used in cooperation with the infrared distance sensor B 609, the deformation, warping and wavy deformation of the circumferential edge of the punch sheet 5 can be detected; specifically, one infrared distance sensor A 607 and one infrared distance sensor B 609 form a group, and the infrared distance sensor A 607 and the infrared distance sensor B 609 measure the distance to the circumferential edge of the punch sheet 5, if the four groups of data are consistent, it means that the punch sheet 5 is not deformed, if the four groups of data are not consistent, it means that the punch sheet 5 is deformed.

[0062] It should be noted that in this text, relational terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Without more limitations, the element defined by the statement "including a" does not exclude the presence of other identical elements in the process, method, article or equipment including the element.

[0063] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be effected without departing from the spirit and scope of the present application, which is not limited to the exact construction and arrangement described. It is intended, therefore, to cover all modifications and adaptions that fall within the scope of the claims and their equivalents.

Claims

1. A multi-station adjustable core punching device, comprising: The machine body (1) and the conveying module (2) and the punching module (3) thereon are characterized in that they also include: a first component (4) and a punching sheet (5) transferred by the first component (4); the first component (4) includes a negative pressure suction pump (401) fixedly connected to the bottom surface of the conveying module (2), the bottom end of the negative pressure suction pump (401) is fixedly connected to a bracket (402), and the bracket (402) is symmetrically provided with a long through groove (403); the bracket ( A suction cup (404) is provided below the bracket (402); a through pipe (405) is fixedly connected to the suction cup (404); a fastener A (406) and a fastener B (407) are sleeved on the through pipe (405); the fastener A (406) and the fastener B (407) are closely attached to the upper and lower surfaces of the bracket (402); a first air pipe (408) is fixedly connected to the top of the through pipe (405); and the punching sheet (5) is adsorbed by the suction cup (404).

2. The multi-station adjustable core punching device according to claim 1, characterized in that: The device further comprises a second component (6); the second component (6) comprises a U-shaped member (601); a second air pipe (602) is connected and fixed to the U-shaped member (601); a strip-shaped cavity (603) is provided in the U-shaped member (601); the U-shaped member (601) is fixedly connected to the bracket (402).

3. The multi-station adjustable core punching device according to claim 2, characterized in that: A movable arc strip (604) is slidably connected in the strip-shaped cavity (603), a limiting member (605) is fixedly connected to the bottom end of the movable arc strip (604), a telescopic clamp A (606) is provided at the lower portion of the limiting member (605), half of the telescopic clamp A (606) is located in the inner cavity of the limiting member (605), and the other half is exposed from the inner cavity of the limiting member (605); a groove is provided on the upper surface of the telescopic clamp A (606), and an infrared distance measuring sensor A (607) is fixedly connected in the groove of the telescopic clamp A (606).

4. The multi-station adjustable core punching device according to claim 3, characterized in that: A telescopic clamp B (608) is provided on the upper portion of the limiting member (605), a groove is provided on the lower surface of the telescopic clamp B (608), and an infrared distance measuring sensor B (609) is fixedly connected in the groove of the telescopic clamp B (608).

5. The multi-station adjustable core punching device according to claim 1, characterized in that: The bracket (402) is X-shaped.

6. The multi-station adjustable core punching device according to claim 1, characterized in that: The suction cup (404) is a double-layer design.

7. The multi-station adjustable core punching device according to claim 6, characterized in that: The suction cup (404) is of an organ-shaped suction type.

8. The multi-station adjustable core punching device according to claim 3, characterized in that: The limiting member (605) is C-shaped.

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