Perforating machine

Abstract

The utility model provides a perforating machine which can be applied to the technical field of perforating equipment and the technical field of finance and comprises a bottom plate, a perforating assembly, a limiting plate and a limiting block. The bottom plate is suitable for placing a paper voucher to be punched; the punching assembly comprises a punching knife, and the punching knife is constructed to move between a first position suspended above the bottom plate and a second position extending into the bottom plate so as to penetrate through the paper voucher to form a through hole in the state of being located at the second position; the limiting plate is movably arranged on the top face of the bottom plate, and the limiting plate is suitable for abutting against the side edge of the paper voucher so that the paper voucher can move along with the limiting plate in the first direction; the two limiting blocks are arranged on the limiting plate in a sliding mode, and the two limiting blocks are suitable for abutting against the two opposite side edges of the paper voucher so that the paper voucher can move in the second direction orthogonal to the first direction along with the limiting blocks; the paper voucher responds to movement of the limiting plate and / or the limiting block and is adjusted to the punching position below the punching knife.

Description

Technical Field

[0001] The utility model relates to the technical field of punching equipment and the technical field of finance, and in particular to a punching machine. Background Art

[0002] In financial work, paper vouchers are the basis of accounting records. These vouchers need to be prepared in a prescribed format to record economic transactions and responsibilities. Given their importance, these vouchers usually need to be organized and preserved by punching and binding after processing to ensure their integrity and facilitate future retrieval.

[0003] Chinese patent number CN109624543A discloses a financial binding machine, which fixes the paper by a sliding plate 6 and a first paper fixing clamp 8 and a second paper fixing clamp 11. The sliding plate 6 can be slidably set on the binding machine base 2, and also includes a scale mark 13 and a scale pointer 5 for moving reference. The above-mentioned financial binding machine solves the problem that the manual binding machine cannot continuously align the punching when in use, but there is still a problem that the punching position is not aligned due to the unfixed position of the paper each time the hole is punched. In the later binding process, the unevenness of the side of the paper will increase the risk of wear and tear, which is not conducive to the long-term preservation and maintenance of the voucher. Therefore, in order to improve the accuracy of punching to ensure the preservation quality of paper vouchers, it is particularly necessary to optimize the existing punching machine. Utility Model Content

[0004] In view of this, an embodiment of the utility model provides a punching machine, which improves the accuracy of punching by setting a movable limit plate and a limit block on the bottom plate to adjust the position of the paper voucher relative to the punching assembly, so as to make the paper voucher neatly bound and facilitate storage and maintenance.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a punching machine, comprising: a base plate, which is suitable for placing a paper certificate to be punched; a punching assembly, including a punching knife, which is configured to move between a first position suspended above the base plate and a second position extending into the base plate, so as to pass through the paper certificate to form a through hole when in the second position; a limit plate, which is movably arranged on the top surface of the base plate, and the limit plate is suitable for abutting the side edge of the paper certificate so that the paper certificate moves along the limit plate in a first direction; two limit blocks, which are slidably arranged on the limit plate, and the two limit blocks are suitable for abutting the opposite side edges of the paper certificate so that the paper certificate moves along the limit blocks in a second direction orthogonal to the first direction; wherein the paper certificate is adjusted to the punching position below the punching knife in response to the movement of the limit plate and / or the limit block.

[0006] According to an embodiment of the utility model, a movable groove is arranged at the top of the bottom plate, a screw rod is rotatably arranged inside the movable groove, and the limit plate is movably arranged on the screw rod; wherein the limit plate moves along the first direction in response to the rotation of the screw rod.

[0007] According to an embodiment of the utility model, the screw rod is constructed with one end extending outward and penetrating the side end of the base plate; wherein the end of the screw rod extending out of the base plate is fixedly connected to a rotating knob.

[0008] According to an embodiment of the utility model, the puncher further comprises a side plate, wherein the side plate is arranged on the bottom plate, and the side plate extends along the first direction; wherein a first scale is arranged on the side plate.

[0009] According to an embodiment of the utility model, the limit block includes a sliding portion and a clamping portion; wherein the sliding portion is slidably disposed in a limit groove disposed on the limit plate, and the clamping portion extends from the sliding portion to the bottom plate, and is suitable for clamping the paper certificate.

[0010] According to an embodiment of the utility model, the limit block further comprises a fixing bolt, and the fixing bolt has a separated state located in the limit block, and a limit state extending from the limit block and pressing against the limit groove.

[0011] According to an embodiment of the utility model, a second scale is provided on the limiting plate.

[0012] According to an embodiment of the utility model, a punching groove is provided at the punching position below the punching knife at the top of the base plate, and a collecting groove is opened at the side end of the base plate, and the punching groove is connected with the collecting groove; a storage box is movably provided inside the collecting groove, and the storage box is suitable for accommodating cut paper scraps.

[0013] According to an embodiment of the utility model, the punching assembly also includes: a bracket fixedly arranged at one end of the base plate; a driving mechanism arranged at the top of the bracket, the driving mechanism including a threaded rod; a lifting part movably connected to the outside of the threaded rod, the lifting part responds to the rotation of the threaded rod and moves vertically between a first horizontal height and a second horizontal height; wherein the punching knife is arranged on the lifting part and is constructed to move between the first position and the second position in response to the driving mechanism.

[0014] According to an embodiment of the utility model, the punching knife includes a cutter head body, the cutter head body is constructed in a cylindrical shape, a columnar member is telescopically arranged in the cutter head body, and a spring is arranged between the columnar member and the cutter head body; wherein the columnar member is constructed to be pressed into the cutter head body in response to cut paper scraps, and to push out the cut paper scraps in response to the cutter head body being in the second position.

[0015] According to the punching machine of the above embodiment of the utility model, by setting a movable limit plate and a limit block on the bottom plate, the position of the paper voucher is precisely adjusted, thereby significantly improving the accuracy of punching. In addition, the design of the limit plate and the limit block also ensures the effective restriction of the three adjacent ends of the paper voucher, effectively ensuring the flatness of the side of the paper voucher. This is conducive to the neatness of binding and further optimizes the preservation and maintenance of the paper voucher. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above contents and other purposes, features and advantages of the present invention will become more apparent through the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:

[0017] Figure 1 is a three-dimensional schematic diagram of a punching machine according to an exemplary embodiment of the utility model;

[0018] Figure 2 is a schematic diagram of a punching machine punching holes in a paper voucher according to an exemplary embodiment of the utility model;

[0019] Figure 3 yes Figure 1 A partial enlarged view of the middle limit block; and

[0020] Figure 4 It is a partial cross-sectional view of a punching knife according to an exemplary embodiment of the utility model.

[0021] In the above drawings, the meanings of the reference numerals are as follows:

[0022] 1. Bottom plate;

[0023] 11. Mobile slot;

[0024] 12. Punch slot;

[0025] 13. Collection tank;

[0026] 14. Storage box;

[0027] 2. Punching components;

[0028] 21. Bracket;

[0029] 22. Driving mechanism;

[0030] 221, threaded rod;

[0031] 23. Lifting unit;

[0032] 24. Punch knife;

[0033] 241, blade body;

[0034] 242, columnar parts;

[0035] 243. Spring;

[0036] 3. Limiting plate;

[0037] 31. Limiting groove;

[0038] 32. Second scale;

[0039] 4. Limit block;

[0040] 41. Sliding part;

[0041] 42. Fixing bolts;

[0042] 43. Clamping portion;

[0043] 5. Screw rod;

[0044] 51. Turn the knob;

[0045] 6. Side panels; and

[0046] 61. First scale. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings. The terms used herein are only for describing specific embodiments and are not intended to limit the utility model.

[0048] The terms "include", "comprising", etc. used herein indicate the presence of the features, steps, operations and / or components, but do not exclude the presence or addition of one or more other features, steps, operations or components. All terms used herein, including technical and scientific terms, have the meanings commonly understood by those skilled in the art unless otherwise defined. It should be noted that the terms used herein should be interpreted as having a meaning consistent with the context of this specification and should not be interpreted in an idealized or overly rigid manner.

[0049] In this document, unless otherwise specified, directional terms such as "upper", "lower", "left", "right", "inner", "outer", etc. are used to indicate the orientation or positional relationship based on the drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device, element or component referred to must have a specific orientation, be constructed or operate in a specific orientation. It should be understood that when the absolute position of the described object changes, the relative positional relationship they represent may also change accordingly. Therefore, these directional terms cannot be understood as limiting the present invention.

[0050] When using expressions such as "at least one of A, B, and C, etc.", it should generally be interpreted as the meaning of the expression generally understood by those skilled in the art. For example, "a system having at least one of A, B, and C" should include but not be limited to a system having A alone, B alone, C alone, A and B, A and C, B and C, and / or A, B, C, etc. When using expressions such as "at least one of A, B, or C, etc.", it should generally be interpreted as the meaning of the expression generally understood by those skilled in the art. For example, "a system having at least one of A, B, or C" should include but not be limited to a system having A alone, B alone, C alone, A and B, A and C, B and C, and / or A, B, C, etc.

[0051] Figure 1 is a three-dimensional schematic diagram of a punching machine according to an exemplary embodiment of the utility model; Figure 2 It is a schematic diagram of punching holes in a paper voucher by a punching machine according to an exemplary embodiment of the utility model.

[0052] As described in the background technology, currently in financial work, paper vouchers need to be prepared in a prescribed format to record economic transactions and responsibilities. These vouchers usually need to be organized and preserved by punching and binding. In the existing financial punching machines, the positions of the holes are not fixed during each punching process, resulting in uneven positions of the paper. In the subsequent binding process, the sides of the paper will become uneven, which can easily cause the sides to wear and is not conducive to preservation.

[0053] According to a punching machine provided by the utility model, Figure 1 and Figure 2As shown, it includes a base plate 1, a punching assembly 2, a limit plate 3, and two limit blocks 4. The base plate 1 is suitable for placing paper vouchers to be punched; the punching assembly 2 includes a punching knife 24, which is configured to move between a first position suspended above the base plate 1 and a second position extending into the base plate 1, so as to pass through the paper voucher to form a through hole when in the second position; the limit plate 3 is movably arranged on the top surface of the base plate 1, and the limit plate 3 is suitable for abutting the side of the paper voucher so that the paper voucher moves along the limit plate 3 in a first direction; the two limit blocks 4 are slidably arranged on the limit plate 3, and the two limit blocks 4 are suitable for abutting the opposite side edges of the paper voucher so that the paper voucher moves along the limit blocks 4 in a second direction orthogonal to the first direction; wherein, the paper voucher is adjusted to the punching position below the punching knife 24 in response to the movement of the limit plate 3 and / or the limit block 4.

[0054] According to the above-mentioned setting method, the bottom plate 1 cooperates with the punching knife 24 that can move between the first position suspended above the bottom plate 1 and the second position extending into the bottom plate 1 to complete the punching of the paper voucher. A movable limit plate 3 is set on the bottom plate. The limit plate 3 can adjust the relative position of the paper voucher and the punching assembly along the first direction. Two slidable limit blocks 4 are set on the limit plate 3, which can respectively abut the opposite sides of the paper voucher to adjust the relative position of the paper voucher and the punching assembly in the second direction orthogonal to the first direction, thereby achieving precise adjustment of the position of the paper voucher to ensure that the punching positions of different paper vouchers are the same, thereby significantly improving the accuracy of the punching. In addition, the design of the limit plate 3 and the limit block 4 also ensures that when punching multiple paper vouchers at a time, the adjacent three end sides of the multiple paper vouchers are restricted, effectively ensuring the flatness of the sides of the multiple paper vouchers to ensure the consistency of the punching positions. Under the adjustment and restriction of the limit plate 3 and the limit block 4, the neatness of the paper vouchers after binding is significantly improved, and the preservation and maintenance effect of the paper vouchers is further optimized.

[0055] In an illustrative embodiment, Figure 1 As shown, a movable groove 11 is arranged at the top of the bottom plate 1, a screw rod 5 is rotatably arranged inside the movable groove 11, and a limit plate 3 is movably arranged on the screw rod 5; wherein the limit plate 3 moves along the first direction in response to the rotation of the screw rod 5.

[0056] According to the above-mentioned setting mode, by setting the moving groove 11 and the internally rotating screw 5 on the bottom plate 1, the limit plate 3 is moved along the axial direction of the screw by the rotation of the screw 5, which increases the flexibility and adaptability of the device and can meet the adjustment requirements of different positions and distances. At the same time, the use of the screw 5 to adjust the linear motion control with precision, high efficiency, stability and flexibility can accurately control the movement of the limit plate, and the self-locking function can also ensure the fixation of the limit plate 3, so as to achieve precise positioning and limiting effects.

[0057] In an illustrative embodiment, Figure 1 As shown, the screw rod 5 is constructed with one end extending outward and penetrating the side end of the base plate 1 ; wherein, the end of the screw rod 5 extending out of the base plate 1 is fixedly connected with a rotating knob 51 .

[0058] According to the above configuration, one end of the screw rod 5 extends out of the bottom plate and is provided with a rotation knob 51. The operator can directly control the rotation of the screw rod 5 by rotating the rotation knob 51, thereby driving the movement of the limit plate 3. Such a design simplifies the operation process and improves the convenience of use.

[0059] In a replaceable schematic embodiment, a movable groove 11 is provided at the top of the base plate 1, a pneumatic cylinder is retractably provided inside the movable groove 11, and a limit plate 3 is fixedly installed at the output end of the pneumatic cylinder; wherein the limit plate 3 moves along the first direction in response to the drive of the pneumatic cylinder.

[0060] According to the above setting mode, the pneumatic cylinder is used to move the position of the limit plate 3, and the pneumatic cylinder can provide fast and smooth linear movement. When continuous punching operation is required for paper vouchers, the position of the limit plate 3 needs to be adjusted frequently, and the efficiency of the pneumatic cylinder is obviously better than the manual adjustment method.

[0061] In an illustrative embodiment, Figure 1 and Figure 2 As shown, the puncher further includes a side plate 6 , which is disposed on the bottom plate 1 and extends along a first direction; wherein a first scale 61 is disposed on the side plate 6 .

[0062] According to the above method, a side plate 6 is set with the same moving direction as the limit plate 3. The first scale 61 on the side plate 6 can be used as a reference for the movement of the limit plate 3, so that the limit plate 3 can be adjusted at equal intervals to ensure the uniformity of the punching position. The position judgment by the first scale 61 further ensures the consistency of the punching position of different paper vouchers, improves the neatness of the paper vouchers after binding, and further optimizes the preservation and maintenance effect of the paper vouchers.

[0063] Figure 3 yes Figure 1 A partial enlarged view of the middle limit block.

[0064] In an illustrative embodiment, Figure 1 and Figure 3 As shown, the limit block 4 includes a sliding portion 41 and a clamping portion 43; wherein the sliding portion 41 is slidably disposed in the limit groove 31 disposed on the limit plate 3, and the clamping portion 43 extends from the sliding portion 41 to the bottom plate 1, and is suitable for clamping paper vouchers.

[0065] According to the above-mentioned setting method, the limit block 4 slides in the limit groove 31 configured in the limit plate 3 through the sliding part 41, and abuts against the side of the paper certificate through the clamping part 43. The two limit blocks 4 cooperate to clamp the two ends of paper certificates of different sizes, thereby improving the applicability. At the same time, the clamping part 43 can effectively ensure the flatness of the clamped two ends of the paper certificate. At the same time, the paper certificate can also move with the limit block 4 to be adjusted to the required punching position.

[0066] In an illustrative embodiment, Figure 1 and Figure 3 As shown, the sliding portion 41 is configured in a T-shape, the limiting groove 31 is configured in a T-shaped sliding groove, and the sliding portion 41 is slidably disposed in the limiting groove 31 .

[0067] According to the above-mentioned setting method, the sliding part 41 and the limiting groove 31 are both constructed in a T shape. The T-shaped design can provide a stable guiding mechanism to ensure that the sliding part 41 moves smoothly along the limiting groove 31, reducing the possibility of lateral swing or deviation; the T-shaped structure can also prevent the sliding part 41 from accidentally falling off in the limiting groove 31 to a certain extent, further increasing stability and safety.

[0068] In an illustrative embodiment, Figure 1 and Figure 3 As shown, the limit block 4 further includes a fixing bolt 42 , and the fixing bolt 42 has a separated state located in the limit block 4 , and a limit state in which the fixing bolt 42 extends from the limit block 4 and presses against the limit groove 31 .

[0069] According to the above-mentioned setting, after adjusting the paper voucher to the required position, the limit block 4 can be fixed by the fixing bolt 42, allowing the operator to quickly switch between the free movement and fixed positions by simply rotating or pushing the bolt as needed.

[0070] In a replaceable schematic embodiment, a limiting groove is provided on the limiting plate 4 and passes through the limiting plate 4 along a first direction; the limiting block 4 includes a sliding portion, a clamping portion and a fixed portion, the sliding portion is slidably arranged in the limiting groove, the clamping portion and the fixed portion are respectively arranged at two opposite ends of the sliding portion, the clamping portion extends from the sliding portion to the bottom plate 1, and the fixed portion is connected to the sliding portion by a thread, and has a separation state without contacting the limiting plate 3, and a limiting state by pressing against the limiting plate 3.

[0071] According to the above-mentioned setting method, after adjusting the paper voucher to the required position when the fixed part is separated, the distance between the fixed part and the clamping part can be shortened by the threaded cooperation between the fixed part and the sliding part, so that the fixed part is pressed against the limit plate 3 to fix the limit block 4, allowing the operator to simply rotate as needed to quickly switch between the free movement and fixed positions.

[0072] In an illustrative embodiment, Figure 1 As shown, a second scale 32 is provided on the limiting plate 3 .

[0073] According to the above-mentioned setting method, the second scale 32 can be used as a reference for the movement of the limit block 4. Through the judgment of the position by the second scale 32, the consistency of the punching positions of different paper vouchers is further guaranteed, the neatness of the paper vouchers after binding is improved, and the preservation and maintenance effect of the paper vouchers is further optimized.

[0074] In an illustrative embodiment, Figure 1 As shown, a punching groove 12 is provided at the punching position below the punching knife 24 at the top of the base plate 1, and a collecting groove 13 is provided at the side end of the base plate 1, and the punching groove 12 is connected to the collecting groove 13; a storage box 14 is movably provided inside the collecting groove 13, and the storage box 14 is suitable for accommodating cut paper scraps.

[0075] According to the above-mentioned setting mode, a punching slot 12 corresponding to the punching position of the punching knife 24 is set on the bottom plate 1. When the punching knife 24 moves from the first position to the second position during the punching process, the bottom plate 1 abuts against the bottom surface of the paper voucher. The shear force generated by the relative movement of the punching slot 12 and the punching knife 24 completes the punching of the paper voucher and makes the periphery of the hole smooth. Furthermore, the punching slot 12 is also configured with a connected collection slot 13. The storage box 14 in the collection slot 13 can accommodate the paper scraps cut during the punching process to prevent the paper scraps from affecting the working environment.

[0076] In an illustrative embodiment, Figure 1 and Figure 2 As shown, the punching assembly 2 also includes: a bracket 21, fixedly arranged at one end of the base plate 1; a driving mechanism 22, arranged at the top of the bracket 21, and the driving mechanism 22 includes a threaded rod 221; a lifting part 23, movably connected to the outside of the threaded rod 221, and the lifting part 23 rotates in response to the threaded rod 221 and moves vertically between a first horizontal height and a second horizontal height; wherein, the punching knife 24 is arranged on the lifting part 23, and is constructed to move between a first position and a second position in response to the driving mechanism 22.

[0077] According to the above-mentioned setting mode, the movement of the punching knife 24 is achieved by rotating the threaded rod 221. The efficient transmission mechanism of the threaded rod 221 ensures that the input rotational power can be efficiently converted into the linear motion of the slider, while providing excellent guidance and motion stability. This design allows the lifting part 23 and the punching knife 24 to remain stable during the movement, effectively reducing any possible vibration or deviation, thereby ensuring high-precision and reliable punching operation, further ensuring the consistency of the punching positions of different paper vouchers, improving the neatness of the paper vouchers after binding, and optimizing the preservation and maintenance effect of the paper vouchers.

[0078] In an illustrative embodiment, the driving mechanism 22 further includes a motor and a control system, and the motor is fixedly connected to the threaded rod 221 .

[0079] According to the above-mentioned setting mode, the automatic control of the punching process can be realized.

[0080] In an alternative exemplary embodiment, the driving mechanism 22 includes a hydraulic cylinder fixedly connected to the lifting portion 23 .

[0081] Figure 4 It is a partial cross-sectional view of a punching knife according to an exemplary embodiment of the utility model.

[0082] In an illustrative embodiment, Figure 4 As shown, the punching knife 24 includes a cutter head body 241, which is constructed in a cylindrical shape. A columnar member 242 is telescopically arranged in the cutter head body 241, and a spring 243 is arranged between the columnar member 242 and the cutter head body; wherein the columnar member 242 is constructed to respond to the cut paper scraps being pressed into the cutter head body 241, and to respond to the cut paper scraps being pushed out in response to the cutter head body 241 being in the second position.

[0083] According to the above-mentioned setting method, the cutter head body 241 of the punching knife 24 is constructed into a cylindrical shape. During the punching process, a large pressure is generated on the surface of the paper voucher, which is beneficial to the cutting of the paper voucher. While ensuring the smoothness of the cutting edge, it is not easy for the paper voucher around the hole to be stretched due to pressure to affect the subsequent binding. A retractable columnar member 242 is arranged inside the cutter head body 241. The tension of the spring 243 can push out the cut paper scraps that enter the cutter head body 241 during the punching process of the punching knife 24 to avoid affecting the subsequent punching effect.

[0084] In an illustrative embodiment, an annular partition is provided inside the cutter head body 241, which divides the inside of the cutter head body 241 into a punching portion and a movable groove. The columnar member 242 is constructed with a T-shaped cross-section and is movably arranged in the movable groove. A spring 243 is provided between the columnar member 242 and the movable groove. The columnar member 242 responds to the tension of the spring 243 and the pressure of the cut paper scraps, and has a first state of extending out of the cutter head body 241 and a second state inside the cutter head body 241. When the columnar member 242 is in the first state, it presses against the partition.

[0085] According to the above-mentioned setting method, the T-shaped cross-section of the columnar member 242 and the involvement of the annular partition allow the columnar member 242 to slide firmly in the movable groove. This design enhances the guidance and stability of the columnar member 242 in the movable groove, and can prevent the columnar member 242 from falling off from the inside of the cutter head body 241.

[0086] Those skilled in the art will appreciate that the features described in the various embodiments and / or claims of the present invention may be combined and / or combined in various ways, even if such combinations and / or combinations are not explicitly described in the present invention. In particular, the features described in the various embodiments and / or claims of the present invention may be combined and / or combined in various ways without departing from the spirit and teachings of the present invention. All of these combinations and / or combinations fall within the scope of the present invention.

[0087] The embodiments of the present invention are described above. However, these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Although the embodiments are described above separately, this does not mean that the measures in the various embodiments cannot be used in combination to advantage. The scope of the present invention is defined by the attached claims and their equivalents. Without departing from the scope of the present invention, a person skilled in the art may make a variety of substitutions and modifications, which should all fall within the scope of the present invention.

Claims

1. A punching machine, It is characterized in that include: A bottom plate (1), the bottom plate (1) being suitable for placing paper vouchers to be punched; A punching assembly (2), comprising a punching knife (24), wherein the punching knife (24) is configured to move between a first position suspended above the bottom plate (1) and a second position extending into the bottom plate (1), so as to penetrate the paper voucher to form a through hole when in the second position; A limiting plate (3) is movably arranged on the top surface of the bottom plate (1), and the limiting plate (3) is suitable for abutting against the side edge of the paper certificate so that the paper certificate moves along the limiting plate (3) along the first direction; Two limit blocks (4) are slidably arranged on the limit plate (3), and the two limit blocks (4) are suitable for abutting against two opposite sides of the paper certificate so that the paper certificate moves along the limit blocks along a second direction orthogonal to the first direction; The paper voucher is adjusted to a punching position below the punching knife (24) in response to the movement of the limiting plate (3) and / or the limiting block (4).

2. The punching machine according to claim 1, It is characterized in that The top of the bottom plate (1) is provided with a movable groove (11), a screw rod (5) is rotatably arranged inside the movable groove (11), and the limiting plate (3) is movably arranged on the screw rod (5); The limiting plate (3) moves along the first direction in response to the rotation of the screw rod (5).

3. The punching machine according to claim 2, It is characterized in that The screw rod (5) is configured such that one end thereof extends outward and penetrates through the side end of the bottom plate (1); One end of the screw rod (5) extending out of the base plate (1) is fixedly connected to a rotating knob (51).

4. The punching machine according to claim 1, It is characterized in that It also includes a side plate (6), wherein the side plate (6) is arranged on the bottom plate (1), and the side plate (6) extends along the first direction; Wherein, a first scale (61) is provided on the side plate (6).

5. The punching machine according to any one of claims 1 to 4, It is characterized in that The limit block (4) comprises a sliding portion (41) and a clamping portion (43); The sliding portion (41) is slidably disposed in a limiting groove (31) provided on the limiting plate (3), and the clamping portion (43) extends from the sliding portion (41) toward the bottom plate (1) and is suitable for clamping the paper voucher.

6. The punching machine according to claim 5, It is characterized in that The limit block (4) further comprises a fixing bolt (42), wherein the fixing bolt (42) has a separated state located inside the limit block (4), and a limit state in which the fixing bolt (42) extends from the limit block (4) and presses against the limit groove (31).

7. The punching machine according to claim 6, It is characterized in that The limiting plate (3) is provided with a second scale (32).

8. The punching machine according to claim 1, It is characterized in that A punching groove (12) is provided at the punching position below the punching knife (24) at the top end of the bottom plate (1), and a collecting groove (13) is provided at the side end of the bottom plate (1), and the punching groove (12) is connected to the collecting groove (13); A storage box (14) is movably provided inside the collecting trough (13), and the storage box (14) is suitable for accommodating cut paper scraps.

9. The punching machine according to claim 1, It is characterized in that The punching assembly (2) further comprises: A bracket (21) is fixedly arranged at one end of the base plate (1); A driving mechanism (22) is arranged at the top end of the bracket (21), and the driving mechanism (22) comprises a threaded rod (221); A lifting part (23) is movably connected to the outside of the threaded rod (221), and the lifting part (23) rotates in response to the threaded rod (221) to move vertically between a first level and a second level; The punching knife (24) is arranged on the lifting part (23) and is configured to move between the first position and the second position in response to the driving mechanism (22).

10. The punching machine according to claim 1, It is characterized in that The punching knife (24) comprises a cutter head body (241), the cutter head body (241) is configured to be cylindrical, a columnar member (242) is telescopically arranged in the cutter head body (241), and a spring (243) is arranged between the columnar member (242) and the cutter head body; The columnar member (242) is configured to be pressed into the cutter head body (241) in response to the cut paper scraps being pressed, and to push out the cut paper scraps in response to the cutter head body (241) being in the second position.

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