A perforating device

Abstract

The utility model discloses a kind of punching device, and punching device includes: support, support table, punching part, pivot, lifting bearing and feeding roller. Among them, support table is located in support, punching part is located above support table, and it is oppositely arranged with support table. Pivot is equipped with eccentric part, the axis of pivot is first axis, the axis of eccentric part is second axis, first axis is parallel with second axis and does not coincide, when pivot rotates, second axis rotates around first axis. Lifting bearing is sleeved in eccentric part, the axis of lifting bearing coincides with second axis, when pivot rotates, lifting bearing drives punching part to reciprocate along height direction, feeding roller is located in one side of support table, and feeding roller is used to drive sheet material to move. The utility model can effectively improve punching efficiency.

Description

Technical Field

[0001] This utility model relates to the field of leather processing equipment, and in particular to a punching device that can be applied to the production of polyvinyl chloride artificial leather (also known as PVC artificial leather), thermoplastic polyolefin artificial leather (also known as TPO artificial leather), etc. Background Technology

[0002] Leather is widely used in automotive cabins; for example, car seats and steering wheels are typically wrapped in leather to enhance their texture. During leather production, perforation can create numerous small holes on the leather surface. Using perforated leather to make car seats allows for features such as seat heating and ventilation, effectively improving seat comfort. Furthermore, perforated leather can also be used to make steering wheels, enabling them to have a heating function, providing a better driving experience in winter.

[0003] However, current punching equipment is not very efficient at punching holes in leather. Utility Model Content

[0004] The purpose of this invention is to solve the problem of low efficiency in perforating leather using current perforation equipment. This invention provides a perforation device that can effectively improve the efficiency of perforating leather.

[0005] To solve the above-mentioned technical problems, the present invention discloses a punching device for punching holes in sheet materials. The punching device includes:

[0006] support;

[0007] A support platform is provided on the bracket, and the support platform is used to support the sheet material;

[0008] A perforated portion is connected to the bracket in a manner that allows it to move along the height direction. The perforated portion is located above the support platform and is positioned opposite to the support platform along the height direction.

[0009] A rotating shaft extends along its width and has an eccentric portion. The axis of the rotating shaft is a first axis, and the axis of the eccentric portion is a second axis. The first axis and the second axis are parallel and do not coincide. When the rotating shaft rotates, the second axis rotates around the first axis.

[0010] A lifting bearing is sleeved on the eccentric part, and the axis of the lifting bearing coincides with the second axis. When the shaft rotates, the lifting bearing drives the perforated part to reciprocate along the height direction. The shaft has a first state and a second state. In the first state, along the height direction, the second axis is located between the first axis and the perforated part. In the second state, along the height direction, the first axis is located between the second axis and the perforated part.

[0011] A feeding roller is located on one side of the support platform. When the rotating shaft rotates from the second state to the first state and continues to rotate to the second state, the feeding roller drives the sheet to move a set distance along the length direction. When the rotating shaft rotates to the second state, the feeding roller stops rotating.

[0012] The length direction, the width direction, and the height direction are perpendicular to each other.

[0013] By employing the above technical solution, the drilling section, rotating shaft, eccentric part, and lifting bearing work together to allow the drilling section to reciprocate up and down along the height direction when the rotating shaft drives the eccentric part and lifting bearing to rotate. During this movement, the feeding roller moves the sheet material along the length direction to the drilling position. When the drilling section reaches the drilling position along the height direction, the feeding roller stops rotating, allowing the drilling section to drill holes in the sheet material. During this drilling process, no manual adjustment is required; once the drilling device is activated, automatic and continuous drilling can be performed, effectively improving drilling efficiency.

[0014] According to a specific embodiment of the present invention, it further includes:

[0015] A lifting part is provided at the bottom of the perforated part, the lifting part is connected to the perforated part, and the lifting bearing is used to abut against the lifting part.

[0016] According to a specific embodiment of the present invention, the number of eccentric portions is two;

[0017] The two eccentric portions are disposed at both ends of the rotating shaft along the width direction, and the second axes of the two eccentric portions coincide;

[0018] The number of lifting bearings is two, and each of the two lifting bearings is respectively fitted onto one of the eccentric parts.

[0019] By adopting the above technical solution, eccentric parts are set at both ends of the rotating shaft, and lifting bearings are set at each eccentric part, which can effectively improve the stability of the drilling part reciprocating along the height direction.

[0020] According to a specific embodiment of the present invention, it further includes:

[0021] A fixing plate is fixed to the bottom of the perforated part;

[0022] Multiple punches are fixed to the fixing plate. The punches are used to punch holes in the sheet material. The punching part can drive the multiple punches to reciprocate along the height direction.

[0023] According to a specific embodiment of the present invention, the diameter of each of the plurality of punches is 0.9mm-1.1mm.

[0024] According to a specific embodiment of the present invention, the diameter of each of the plurality of punches is 0.9 mm.

[0025] According to a specific embodiment of the present invention, the plurality of punches form a first punch group, a second punch group, a third punch group, and a fourth punch group;

[0026] The first punch group, the second punch group, the third punch group, and the fourth punch group are spaced apart along the length direction. Along the length direction, the second punch group is located between the first punch group and the third punch group, and the third punch group is located between the second punch group and the fourth punch group.

[0027] The first punch group includes a plurality of punches, which are spaced apart along the width direction;

[0028] The second punch group includes a plurality of punches, which are spaced apart along the width direction;

[0029] The third punch group includes a plurality of punches, and the plurality of punches in the third punch group are spaced apart along the width direction;

[0030] The fourth punch group includes multiple punches, which are spaced apart along the width direction.

[0031] By adopting the above technical solution, multiple punches are formed into four punch groups, and the four punch groups are spaced apart along the length direction. As a result, each time the punching part punches, four rows of through holes can be generated on the sheet material, which effectively improves the punching efficiency.

[0032] According to a specific embodiment of the present invention, along the length direction, each of the punches in the first punch group is opposite to one of the punches in the third punch group; along the length direction, each of the punches in the second punch group is opposite to one of the punches in the fourth punch group.

[0033] According to a specific embodiment of the present invention, the distance between the centers of two adjacent punches in the first punch group is a first distance; the distance between the centers of two adjacent punches in the second punch group is a first distance; the distance between the centers of two adjacent punches in the third punch group is a first distance; and the distance between the centers of two adjacent punches in the fourth punch group is a first distance.

[0034] The distance between the center of each punch in the first punch group and the center of the opposite punch in the third punch group is a second distance; the distance between the center of each punch in the second punch group and the center of the opposite punch in the fourth punch group is a second distance.

[0035] The first spacing is equal to the second spacing, and the set distance is twice the second spacing.

[0036] By adopting the above technical solution, since four punch groups are set, when the set distance is twice the second spacing, the spacing of each row of through holes on the sheet material can be made equal.

[0037] According to a specific embodiment of the present invention, the first spacing and the second spacing are 4.4mm-7.0mm. Attached Figure Description

[0038] Figure 1 A side view of the drilling device according to an embodiment of the present invention is shown.

[0039] Figure 2 A perspective view of the punching device according to an embodiment of the present invention is shown.

[0040] Figure 3 A side view of the punching device according to an embodiment of the present invention is shown.

[0041] Figure 4 A cross-sectional view of the lifting mechanism of the punching device according to an embodiment of the present invention is shown.

[0042] Figure 5 The diagram shows the motion of the rotating shaft, lifting bearing, and lifting part of the drilling device according to an embodiment of the present invention.

[0043] Figure 6 The side view shows the lifting bearing and lifting part of the drilling device according to an embodiment of the present invention.

[0044] Figure 7 The image shows a bottom view of the fixing plate and multiple punches of the punching device according to an embodiment of the present invention.

[0045] Figure 8 Show Figure 7A magnified view of point C in the middle.

[0046] Figure 9 This diagram illustrates the punch of the punching device according to an embodiment of the present invention punching holes in leather. Detailed Implementation

[0047] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Although the description of this utility model will be presented in conjunction with preferred embodiments, this does not mean that the features of this utility model are limited to this embodiment. On the contrary, the purpose of describing the utility model in conjunction with the embodiments is to cover other options or modifications that may be derived based on the claims of this utility model. To provide a deep understanding of this utility model, many specific details will be included in the following description. This utility model may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this utility model, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0048] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0049] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0050] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0051] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.

[0052] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0053] refer to Figure 1 This application provides a perforation device 10, which can perforate sheet materials, such as PVC (Polyvinyl chloride) artificial leather (also known as polyvinyl chloride artificial leather) or TPO (Thermoplastic Polyolefin) artificial leather (also known as thermoplastic polyolefin artificial leather). For ease of description, the sheet material will be described as leather 104 below, but it is not limited to this. In other possible application scenarios, the sheet material can also be fabric, polymer sheet material, etc. The perforation device 10 perforates the leather 104 to improve the breathability, heat dissipation, and anti-slip properties of the leather 104, effectively improving the texture of the leather. The perforated leather 104 can be used to make car seats, thereby enabling the car seats to have functions such as seat heating, seat cooling, and seat ventilation, effectively improving the comfort of the car seats. In addition, the perforated leather 104 can also be used to make steering wheels, thereby enabling the steering wheel to have a heating function, giving users a better driving experience in winter or summer.

[0054] Continue to refer to Figure 1 The punching device 10 includes: a paper receiving device 100, a leather winding device 200, a punching device 300, a leather feeding device 400, and a paper feeding device 500. The leather feeding device 400 provides unpunched leather 104 to the punching device 300, and the paper feeding device 500 provides paper 102 to the punching device 300. While the punching device 300 punches holes in the leather 104, the paper 102 is placed underneath the leather 104 to protect the punching tool (not shown) and the leather 104, preventing damage to them. After the leather 104 is punched, the leather winding device 200 winds up the punched leather 104 to form a leather roll 105, and the paper receiving device 100 winds up the paper 102 to form a paper roll 103.

[0055] In this embodiment, paper 102 is specifically corrugated paper, but it is not limited thereto. In other possible embodiments, paper 102 can also be other materials with a certain degree of rigidity and capable of being wound into paper roll 103. This embodiment does not impose special limitations on the thickness of paper 102. For example, in some possible embodiments, the thickness of paper 102 is 0.9 mm, while in other possible embodiments, the thickness of paper 102 can be 1.0 mm, 1.1 mm, or 1.2 mm, etc.

[0056] The punching device 300 will be described in detail below with reference to the accompanying drawings.

[0057] For ease of description, the length direction X, width direction Y, and height direction Z of the drilling device 300 are defined here. The length direction X, width direction Y, and height direction Z are perpendicular to each other, meaning the angles between the length direction X and width direction Y, the width direction Y and height direction Z, and the length direction X and height direction Z are all 90°. However, this is not a limitation; in other possible embodiments, the angles between the length direction X and width direction Y, the width direction Y and height direction Z, and the length direction X and height direction Z can also be 89°, 91°, or 92°, etc.

[0058] refer to Figures 2 to 4 and combined Figure 1 This application provides a punching device 300, which includes: a bracket 310, a support platform 320, a punching part 330, a rotating shaft 340, a lifting mechanism 305, and a feeding roller 301. The support platform 320 is mounted on the bracket 310. The punching part 330 is movably connected to the bracket 310 along the height direction Z, and is positioned opposite to the support platform 320 along the height direction Z. Specifically, when the punching part 330 moves along the height direction Z toward the support platform 320 and punches holes in the leather 104 located above the support platform 320, the support platform 320 can support the paper 102 and the leather 104.

[0059] For example, along the length direction X, the feeding roller 301 is located on one side of the punching device 300. The feeding roller 301 is an active roller. The feeding roller 301 can drive the punched leather 104 and paper 102 to move along the length direction X to enter the subsequent winding step.

[0060] For example, refer to Figures 4 to 6 and combined Figures 1 to 3 The lifting mechanism 305 is located below the support platform 320 along the height direction Z, and includes: a housing 306, a rotating shaft 340, two lifting bearings 342, and two lifting parts 344. The rotating shaft 340, the two lifting bearings 342, and the two lifting parts 344 are located inside the housing 306. The rotating shaft 340 extends along the width direction Y. Along the width direction Y, each end of the rotating shaft 340 has an eccentric part 341. The axis of the rotating shaft 340 is a first axis (e.g., ...). Figure 4 As shown by solid line A), the axis of each eccentric part 341 is the second axis (as shown by solid line A). Figure 4(As shown by the dashed line B), and the second axis B of the two eccentric parts 341 coincides, while the first axis A is parallel to and does not coincide with the second axis B. When the rotating shaft 340 rotates, the second axis B rotates around the first axis A.

[0061] It should be noted that the number of eccentric portions 341 is not specifically limited in this embodiment. For example, in other possible implementations, the number of eccentric portions 341 may be one, three, four, or more. Similarly, the number of lifting bearings 342 is not specifically limited in this embodiment. For example, in other possible implementations, the number of lifting bearings 342 may be one, three, four, or more. Likewise, the number of lifting portions 344 is not specifically limited in this embodiment. For example, in other possible implementations, the number of lifting portions 344 may be one, three, four, or more.

[0062] Each of the two lifting bearings 342 is fitted onto an eccentric part 341. The axis of the lifting bearing 342 coincides with the axis of the eccentric part 341, both being the second axis B. A lifting part 344 is provided above each lifting bearing 342, and the lifting part 344 abuts against the lifting bearing 342. When the rotating shaft 340 rotates, the lifting bearing 342 drives the lifting part 344 to reciprocate along the height direction Z.

[0063] Specifically, refer to Figure 5 and combined Figures 1 to 4 The rotating shaft 340 has a first state and a second state. For example... Figure 5 As shown, Figure 5 The left side shows a schematic diagram of the rotating shaft 340 in its first state. Figure 5 The diagram on the right shows the pivot 340 in its second state. In the first state, along the height direction Z, the second axis B is located between the first axis A and the lifting part 344. In the second state, along the height direction Z, the first axis A is located between the second axis B and the lifting part 344.

[0064] For example, when the rotating shaft 340 drives the lifting bearing 342 to rotate clockwise in the direction R1 from the first state to the second state, the lifting bearing 342 drives the lifting part 344 to move downward in the height direction Z. When the rotating shaft 340 drives the lifting bearing 342 to rotate clockwise in the direction R1 from the second state to the first state, the lifting bearing 342 drives the lifting part 344 to move upward in the height direction Z. Thus, when the rotating shaft 340 continues to rotate, the lifting bearing 342 drives the lifting part 344 to reciprocate in the height direction Z.

[0065] For example, the lifting part 344 is connected to the piston rod 346 of the drilling part 330. Thus, when the lifting bearing 342 drives the lifting part 344 to reciprocate along the height direction Z, the lifting part 344 can drive the piston rod 346 of the drilling part 330 to reciprocate along the height direction Z. Specifically, there are four piston rods 346, and the housing 306 is provided with four connecting holes 345. Each connecting hole 345 allows one piston rod 346 to extend into the housing and connect the piston rod 346 to the lifting part 344 inside the housing 306.

[0066] It should be noted that the number of piston rods 346 is not specifically limited in this embodiment. For example, in other possible implementations, the number of piston rods 346 may be two, six, eight, or more. Similarly, the number of connecting holes 345 is not specifically limited in this embodiment, but it should be ensured that the number of connecting holes 345 corresponds one-to-one with the number of piston rods 346.

[0067] For example, refer to Figure 2 and Figure 3 In this embodiment, the feeding roller 301 is driven by a first motor 302. Specifically, the first motor 302 drives the feeding roller 301 to rotate, thereby causing the leather 104 to move along the length direction X. In this embodiment, the first motor 302 drives the feeding roller 301 to cause the leather 104 to move in an inching motion. Specifically, "inching motion" means that the leather 104 moves a set distance along the length direction X, stops moving for a period of time, then moves a set distance again, stops moving for a period of time again, and so on, repeating the above process to achieve inching motion.

[0068] For example, refer to Figure 5 and combined Figure 2 and Figure 3 During the process of the lifting bearing 342 moving from the second state to the first state and then back to the second state, the first motor 302 drives the feeding roller 301 to move the leather 104 a set distance. When the lifting bearing 342 reaches the second state, the first motor 302 stops working and stops the leather 104, allowing the punching part 330 to punch holes in the leather 104. After punching is completed, during the process of the lifting bearing 342 moving from the second state to the first state and then back to the second state, the first motor 302 again drives the feeding roller 301 to move the leather 104 a set distance.

[0069] It should be noted that the embodiments of this application do not impose special limitations on the set distance. For example, in some possible implementations, the set distance is 14mm, while in other possible implementations, the set distance may be 8mm, 10mm, or 12mm, etc. Correspondingly, the embodiments of this application do not impose special limitations on the time for the leather 104 to stop moving. For example, in some possible implementations, the stopping time is 1 second, while in other possible implementations, the stopping time may be 2 seconds, 3 seconds, etc.

[0070] Exemplarily, in this embodiment, through the cooperation of the rotating shaft 340, the eccentric part 341, the lifting bearing 342, and the lifting part 344, the rotating shaft 340 rotates, causing the lifting part 344 to drive the punching part 330 to reciprocate along the height direction Z. During the process of the lifting bearing 342 moving from the second state to the first state and then back to the second state, the first motor 302 drives the feeding roller 301 to move the leather 104 a predetermined distance. When the lifting bearing 342 reaches the second state, the first motor 302 stops working, and the leather 104 stops, allowing the punching part 330 to punch holes in the leather 104. After punching is completed, during the process of the lifting bearing 342 moving from the second state to the first state and then back to the second state, the first motor 302 again drives the feeding roller 301 to move the leather 104 a predetermined distance. Therefore, by simply ensuring the rotating shaft 340 and the feeding roller 301 operate normally, continuous punching of the leather 104 can be achieved.

[0071] Compared to traditional punching equipment, which requires manual alignment and then machine control to punch holes in the leather, the punching device 300 provided in this application embodiment does not require manual intervention during the punching process, resulting in higher punching efficiency.

[0072] For example, the shaft 340 can be driven by a motor, but is not limited thereto. In other possible implementations, the shaft 340 can also be driven by a belt.

[0073] For example, the punching device 300 of this application embodiment also includes a feeding roller 303 and a second motor 304. The second motor 304 can drive the feeding roller 303 to rotate so as to move the unpunched leather 104 to the underside of the punching section 330.

[0074] refer to Figure 7 and Figure 8 and combined Figure 2The punching device 300 of this application embodiment further includes a fixing plate 350 and a plurality of punches 351. The fixing plate 350 is fixed to the bottom of the punching section 330, and the plurality of punches 351 are fixed to the side of the fixing plate 350 facing away from the punching section 330. The punches 351 are used to punch holes in the leather 104. The punching section 330 can drive the fixing plate 350 and the plurality of punches 351 to reciprocate along the height direction Z.

[0075] For example, in the embodiments of this application, the maximum diameter D of each of the plurality of punches 351 is 0.9 mm to 1.1 mm (inclusive). Preferably, the maximum diameter D of each of the plurality of punches 351 is 0.9 mm.

[0076] It should be noted that punch 351 is itself a cutting tool. Along the height direction Z, different parts of punch 351 have different diameters. For example, the diameter of the end of punch 351 furthest from the fixing plate 350 is smaller to facilitate penetration through the leather 104. The "maximum diameter" of punch 351 refers to its maximum diameter D along the height direction Z. It can be understood that the diameter of the through hole formed by punch 351 in the leather 104 is the same as the maximum diameter D of punch 351.

[0077] It should be noted that the maximum diameter of the punch 351 is not specifically limited in this embodiment, and can be adapted to meet the actual needs of the product. For example, in other possible implementations, the maximum diameter D of the punch 351 is 0.95mm, 0.98mm, or 1.05mm, etc.

[0078] Continue to refer to Figure 7 and Figure 8 Multiple punches 351 are arranged in four groups. Specifically, the multiple punches 351 form a first punch group 352, a second punch group 353, a third punch group 354, and a fourth punch group 355. Along the length direction X, the first punch group 352, the second punch group 353, the third punch group 354, and the fourth punch group 355 are spaced apart. And along the length direction X, the second punch group 353 is located between the first punch group 352 and the third punch group 354, and the third punch group 354 is located between the second punch group 353 and the fourth punch group 355.

[0079] For example, a first punch group 352 includes a plurality of punches 351, which are spaced apart along the width direction Y. A second punch group 353 includes a plurality of punches 351, which are spaced apart along the width direction Y. A third punch group 354 includes a plurality of punches 351, which are spaced apart along the width direction Y. A fourth punch group 355 includes a plurality of punches 351, which are spaced apart along the width direction Y.

[0080] For example, along the length direction X, each punch 351 in the first punch group 352 is opposite to one punch 351 in the third punch group 354. Along the length direction X, each punch 351 in the second punch group 353 is opposite to one punch 351 in the fourth punch group 355.

[0081] In the first punch group 352, the distance between the centers of two adjacent punches 351 is the first distance L1; in the second punch group 353, the distance between the centers of two adjacent punches 351 is the first distance L1; in the third punch group 354, the distance between the centers of two adjacent punches 351 is the first distance L1; and in the fourth punch group 355, the distance between the centers of two adjacent punches 351 is the first distance L1.

[0082] The distance between the center of each punch 351 in the first punch group 352 and the center of the opposite punch 351 in the third punch group 354 is a second distance L2. The distance between the center of each punch 351 in the second punch group 353 and the center of the opposite punch 351 in the fourth punch group 355 is also a second distance L2. The first distance L1 is equal to the second distance L2. The aforementioned set distance is twice the second distance L2.

[0083] For example, the range of the first spacing L1 and the second spacing L2 is from 4.4 mm to 7.0 mm (inclusive). Preferably, the first spacing L1 and the second spacing L2 are 7.0 mm. In other possible embodiments, the first spacing L1 and the second spacing L2 may also be 5 mm, 6 mm, 6.5 mm, or 6.8 mm, etc.

[0084] In this embodiment, the first motor 302 drives the feeding roller 301 to move the leather 104 by a set distance of 14mm, while the second spacing L2 is 7.0mm. Therefore, along the length direction X, the spacing of the through holes produced by the multiple punches 351 on the leather 104 is the same, ensuring the aesthetic appearance of the leather 104.

[0085] Specifically, such as Figure 9 As shown, Figure 9In the diagram, through hole 1041a is the through hole produced by punch 351 of the first punch group 352 on leather 104; through hole 1041b is the through hole produced by punch 351 of the second punch group 353 on leather 104; through hole 1041c is the through hole produced by punch 351 of the third punch group 354 on leather 104; and through hole 1041d is the through hole produced by punch 351 of the fourth punch group 355 on leather 104. It can be understood that the distance between the center of through hole 1041a and the center of through hole 1041c is the second distance L2. Dotted holes 1041e, 1041f, 1041g, and 1041h represent the areas to be punched. As can be seen, when the feeding roller 301 drives the leather to move to the left along the length direction X by a set distance of twice the second spacing L2, the dotted hole 1041e corresponds to the through hole 1041a, the dotted hole 1041f corresponds to the through hole 1041b, the dotted hole 1041g corresponds to the through hole 1041c, and the dotted hole 1041h corresponds to the through hole 1041d.

[0086] Although the present invention has been illustrated and described with reference to certain preferred embodiments, those skilled in the art should understand that the above description is a further detailed explanation of the present invention in conjunction with specific embodiments, and should not be construed as limiting the specific implementation of the present invention to these descriptions. Those skilled in the art can make various changes in form and detail, including some simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A perforating device for perforating a sheet material, characterized in that include: support; A support platform is provided on the bracket, and the support platform is used to support the sheet material; A perforated portion is connected to the bracket in a manner that allows it to move along the height direction. The perforated portion is located above the support platform and is positioned opposite to the support platform along the height direction. A rotating shaft extends along its width and has an eccentric portion. The axis of the rotating shaft is a first axis, and the axis of the eccentric portion is a second axis. The first axis and the second axis are parallel and do not coincide. When the rotating shaft rotates, the second axis rotates around the first axis. A lifting bearing is sleeved on the eccentric part, and the axis of the lifting bearing coincides with the second axis. When the shaft rotates, the lifting bearing drives the perforated part to reciprocate along the height direction. The shaft has a first state and a second state. In the first state, along the height direction, the second axis is located between the first axis and the perforated part. In the second state, along the height direction, the first axis is located between the second axis and the perforated part. A feeding roller is located on one side of the support platform. When the rotating shaft rotates from the second state to the first state and continues to rotate to the second state, the feeding roller drives the sheet to move a set distance along the length direction. When the rotating shaft rotates to the second state, the feeding roller stops rotating. The length direction, the width direction, and the height direction are perpendicular to each other.

2. The punching device as described in claim 1, characterized in that, Also includes: A lifting part is provided at the bottom of the perforated part, the lifting part is connected to the perforated part, and the lifting bearing is used to abut against the lifting part.

3. The perforating device according to claim 1 or 2, characterized in that The number of eccentric portions is two; The two eccentric portions are disposed at both ends of the rotating shaft along the width direction, and the second axes of the two eccentric portions coincide; The number of lifting bearings is two, and each of the two lifting bearings is respectively fitted onto one of the eccentric parts.

4. The perforating device of claim 1, wherein, Also includes: A fixing plate is fixed to the bottom of the perforated part; Multiple punches are fixed to the fixing plate. The punches are used to punch holes in the sheet material. The punching part can drive the multiple punches to reciprocate along the height direction.

5. The punching device as described in claim 4, characterized in that, The diameter of each of the plurality of punches is 0.9 mm to 1.1 mm.

6. The punching device as described in claim 5, characterized in that, The diameter of each of the plurality of punches is 0.9 mm.

7. The perforating device of claim 4, wherein, The plurality of punches form a first punch group, a second punch group, a third punch group, and a fourth punch group; The first punch group, the second punch group, the third punch group, and the fourth punch group are spaced apart along the length direction. Along the length direction, the second punch group is located between the first punch group and the third punch group, and the third punch group is located between the second punch group and the fourth punch group. The first punch group includes a plurality of punches, which are spaced apart along the width direction; The second punch group includes a plurality of punches, which are spaced apart along the width direction; The third punch group includes a plurality of punches, and the plurality of punches in the third punch group are spaced apart along the width direction; The fourth punch group includes multiple punches, which are spaced apart along the width direction.

8. The perforating device of claim 7, wherein, Along the length direction, each of the punches in the first punch group is opposite to one of the punches in the third punch group; along the length direction, each of the punches in the second punch group is opposite to one of the punches in the fourth punch group.

9. The perforating device of claim 7, wherein, The distance between the centers of two adjacent punches in the first punch group is a first distance; the distance between the centers of two adjacent punches in the second punch group is a first distance; the distance between the centers of two adjacent punches in the third punch group is a first distance; the distance between the centers of two adjacent punches in the fourth punch group is a first distance. The distance between the center of each punch in the first punch group and the center of the opposite punch in the third punch group is a second distance; the distance between the center of each punch in the second punch group and the center of the opposite punch in the fourth punch group is a second distance. The first spacing is equal to the second spacing, and the set distance is twice the second spacing.

10. The punching device as described in claim 9, characterized in that, The first spacing and the second spacing are 4.4mm-7.0mm.

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