Multi-hole punching machine with adjustable hole number

Abstract

The utility model discloses a multi-hole punching machine with the adjustable hole number. The multi-hole punching machine comprises a base, a plurality of punching knives and a gland. A paper groove allowing paper to be embedded is formed in the side portion of the base, a row of guide holes are formed in the upper side of the paper groove, a row of paper cutting holes are formed in the lower side of the paper groove, and the guide holes are aligned with the paper cutting holes one by one. The stamping knives are matched in the guide holes in a one-to-one correspondence mode, a supporting ring located above the guide holes is arranged outside each stamping knife, and a reset spring supported between the base and the supporting ring is arranged outside each stamping knife in a sleeving mode; the gland is arranged on the upper side of the base and can be pressed downwards relative to the base, the lower side of the gland is provided with receding grooves and baffles, the upper ends of the stamping knives are inserted into the receding grooves, the baffles correspond to the upper ends of the stamping knives in a one-to-one mode, and the baffles can open or close the receding grooves corresponding to the upper ends of the stamping knives respectively. According to the utility model, the number of punched holes can be adjusted according to actual requirements, and the use is more flexible.

Description

Technical Field

[0001] The utility model relates to the technical field of office equipment, in particular to a multi-hole punching machine with adjustable hole numbers. Background Art

[0002] A hole punch is a common office equipment, mainly used to punch holes in materials such as paper and cards for binding or fixing.

[0003] Chinese utility model patent CN214724818U discloses a multi-hole punching machine, including a knife base, a punching arm, a plurality of knife cores and at least one positioning assembly, wherein the plurality of knife cores are arranged at intervals on the punching arm, the punching arm is hinged on the knife base and used to drive the plurality of knife cores to move downward, so that the plurality of knife cores can be inserted into the knife base and used for punching holes, and the positioning assembly is connected to the knife base, and the positioning assembly can move up and down, so that the positioning assembly can be inserted into the hole or detached from the hole. The multi-hole punching machine of the utility model can meet the user's multi-hole punching operation, effectively avoid the phenomenon of not being laborious and insufficient strength due to punching multiple holes, save time, and is convenient to use. At the same time, even if the spacing is small, the holes can be neatly arranged, and the machine is compact, easy to operate, and does not occupy public space.

[0004] However, the number of holes punched each time by the above-mentioned multi-hole punching machine is fixed, and the number of holes punched cannot be adjusted according to actual needs, and the use is not flexible enough. Utility Model Content

[0005] In view of the defects in the prior art, the utility model provides a multi-hole punching machine with adjustable hole number, so that the number of punched holes can be adjusted according to actual needs, and the use is more flexible.

[0006] The utility model provides a multi-hole punching machine with adjustable hole number, comprising:

[0007] A base, wherein a paper slot for inserting paper is provided on the side of the base, a row of guide holes is provided on the upper side of the paper slot, and a row of paper cutting holes is provided on the lower side of the paper slot, and each of the guide holes is aligned with each of the paper cutting holes;

[0008] A plurality of punching knives, each of which is adapted to fit in each of the guide holes in a one-to-one correspondence, each of which is provided with a support ring located above the guide hole, and each of which is sleeved with a return spring supported between the base and the support ring;

[0009] A pressure cover is arranged on the upper side of the base and can be pressed down relative to the base. The lower side of the pressure cover is provided with a clearance groove for the upper end of each punching knife to be inserted and a baffle corresponding to the upper end of each punching knife. Each baffle can respectively open or close the clearance groove corresponding to the upper end of each punching knife.

[0010] Furthermore, one side of the pressure cover is hinged to the upper part of the base so that the pressure cover can be pressed down and reset by rotating the pressure cover.

[0011] Furthermore, a plurality of guide grooves corresponding to the punching knives are provided on the lower side of the pressure cover, and the baffles are slidably adapted in the guide grooves one by one. The baffles can be opened or closed by sliding along the guide grooves to open or close the clearance grooves corresponding to the upper ends of the punching knives. A downwardly bent toggle plate is provided at one end of each baffle away from the hinged side of the pressure cover and the base.

[0012] Furthermore, a pressure strip is provided on the lower side of the pressure cover, and the pressure strip is arranged perpendicular to each of the guide grooves and pressed on the outside of the baffle at a position between the clearance groove and the toggle plate.

[0013] Furthermore, a detachable confetti box is provided at the bottom of the base.

[0014] Furthermore, one side end of the base is provided with a positioning ruler located on the extension line of the paper trough, and two positioning columns and a mounting groove for installing the positioning columns are provided on the positioning ruler along the length direction, and the mounting groove connects the side and the top of one side of the positioning ruler, and the lower part of the positioning column is hinged in the mounting groove, and when the positioning column is rotated to face upward, its top protrudes from the top surface of the positioning ruler, and when the positioning column is rotated to face the side, its top retracts to the lower side of the top surface of the positioning ruler.

[0015] Furthermore, one end of the positioning ruler is hinged to the base, so that the positioning ruler can be folded and stored on one side of the base or unfolded to the extension line of the paper slot;

[0016] Alternatively, the positioning ruler is detachably connected to the side end of the base.

[0017] Furthermore, the guide hole is a stepped hole, including an upper small hole section and a lower large hole section, and a section of the punch that cooperates with the guide hole is a stepped shaft, including an upper small diameter section and a lower large diameter section, the upper small diameter section is adapted to the upper small hole section, and the lower large diameter section is adapted to the lower large hole section.

[0018] Furthermore, the guide hole is an equal-diameter hole, a section of the punching knife that cooperates with the guide hole is the optical axis, a limiting member is installed on the upper side of the base, and a plurality of clearance holes are provided on the limiting member. The upper ends of the punching knives pass through the clearance holes one by one, and the support ring outside the punching knife is limited to the lower side of the clearance hole.

[0019] Furthermore, the limiting member includes a U-shaped groove portion with openings facing each other and folded edges folded outward from the two side edges of the U-shaped groove portion, the clearance hole is opened on the top plate of the U-shaped groove portion, and connecting columns are provided on both sides of the guide hole on the upper side of the base, and the folded edges on both sides of the U-shaped groove portion are respectively fixed to the corresponding connecting columns by screws.

[0020] The beneficial effects of the utility model are embodied in:

[0021] The present application sets a clearance groove and a baffle on the lower side of the pressure cover. For the punching knife that needs to be used, the corresponding clearance groove can be blocked by the baffle. In this way, when the pressure cover is pressed down to punch holes, the corresponding punching knife can be pressed down by the baffle to punch holes in the paper inserted in the paper slot. For the punching knife that does not need to be used, the corresponding baffle can be opened to expose the clearance groove. In this way, when the pressure cover is pressed down to punch holes, the upper end of the corresponding punching knife is inserted into the clearance groove to avoid the unused punching knife being pressed down. Therefore, the present application is convenient for adjusting the number of holes to be punched according to actual needs, and is more flexible to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0023] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of the utility model (I);

[0024] Figure 2 This is a schematic diagram of the three-dimensional structure of an embodiment of the utility model (II);

[0025] Figure 3 A top view of an embodiment of the utility model;

[0026] Figure 4 for Figure 3 AA section view;

[0027] Figure 5 for Figure 3 BB cross-sectional view;

[0028] Figure 6 This is a schematic structural diagram of a base according to an embodiment of the utility model;

[0029] Figure 7 This is a schematic structural diagram of a gland according to an embodiment of the utility model;

[0030] Figure 8 This is a schematic structural diagram of a positioning ruler according to an embodiment of the utility model;

[0031] Fig. 9 This is a schematic diagram of the three-dimensional structure of another embodiment of the utility model;

[0032] Fig.10 A top view of another embodiment of the utility model;

[0033] Fig.11 for Fig.10 CC section view;

[0034] Fig.12 for Fig.10 DD cross-sectional view;

[0035] Fig.13 It is a structural schematic diagram of a base according to another embodiment of the utility model.

[0036] In the attached drawings, 100-base; 110-paper slot; 120-guide hole; 121-upper small hole section; 122-lower large hole section; 130-paper cutting hole; 140-paper scrap box; 150-limiting piece; 151-clearance hole; 152-U-shaped groove; 153-folding edge; 160-connecting column; 200-punch; 210-support ring; 220-reset spring; 230-upper small diameter section; 240-lower large diameter section; 300-pressure cover; 310-clearance groove; 320-baffle; 321-push plate; 330-guide groove; 340-pressing strip; 400-positioning ruler; 410-positioning column; 420-installation groove. DETAILED DESCRIPTION

[0037] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0038] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which the utility model belongs.

[0039] Example 1

[0040] like Figure 1-Figure 8 As shown, Embodiment 1 provides a multi-hole punching machine with adjustable number of holes, including a base 100 , a plurality of punching knives 200 and a pressing cover 300 .

[0041] A paper slot 110 for inserting paper is provided on the side of the base 100 , a row of guide holes 120 is provided on the upper side of the paper slot 110 , and a row of paper cutting holes 130 is provided on the lower side of the paper slot 110 , and each guide hole 120 is aligned with each paper cutting hole 130 .

[0042] Each punching knife 200 is adapted to each guide hole 120 in a one-to-one correspondence. A support ring 210 located above the guide hole 120 is provided outside each punching knife 200 . A return spring 220 supported between the base 100 and the support ring 210 is sleeved outside each punching knife 200 .

[0043] The pressure cover 300 is arranged on the upper side of the base 100 and can be pressed down relative to the base 100. The lower side of the pressure cover 300 is provided with a clearance groove 310 for inserting the upper end of each punching knife 200 and a baffle 320 corresponding to the upper end of each punching knife 200. Each baffle 320 can open or close the clearance groove 310 corresponding to the upper end of each punching knife 200 respectively.

[0044] It should be noted that the clearance groove 310 of this embodiment can be a through groove, or can be a plurality of single grooves corresponding one-to-one to the upper ends of the punching knives 200 .

[0045] The present application sets a clearance groove 310 and a baffle 320 on the lower side of the pressure cover 300. For the punching knife 200 that needs to be used, the corresponding clearance groove 310 can be blocked by the baffle 320. In this way, when the pressure cover 300 is pressed down to punch holes, the corresponding punching knife 200 can be pressed down by the baffle 320 to punch holes in the paper inserted into the paper slot 110. For the punching knife 200 that does not need to be used, the corresponding baffle 320 can be opened to expose the clearance groove 310. In this way, when the pressure cover 300 is pressed down to punch holes, the upper end of the corresponding punching knife 200 is inserted into the clearance groove 310 to avoid the unused punching knife 200 from being pressed down. Therefore, the present application is convenient for adjusting the number of holes to be punched according to actual needs, and is more flexible to use.

[0046] The punching knives 200 of this embodiment are specifically provided with 6, which can satisfy the punching requirements of 5 holes, 6 holes and 3 holes at a time, and can meet the binding requirements of 30 holes, 24 holes, 20 holes, 6 holes and 9 holes accordingly. According to the paper, it can meet the punching and binding requirements of A4, A5, B5, A6, A7 and other sizes. In short, it is not limited to paper, flexible and changeable, one machine can be used for multiple purposes, and the number of holes is not limited.

[0047] In one embodiment, referring to Figure 1 , Figure 2 and Figure 5 One side of the pressure cover 300 is hinged to the upper part of the base 100 so that the pressure cover 300 can be pressed down and reset by rotating the pressure cover 300.

[0048] Preferably, refer to Figure 5 and Figure 7A plurality of guide grooves 330 corresponding to each punching knife 200 are provided on the lower side of the pressure cover 300, and each baffle plate 320 is slidably adapted in each guide groove 330 one by one. The baffle plate 320 can be slid along the guide groove 220 to open or close the clearance groove 310 corresponding to the upper end of the punching knife 200. A downwardly bent toggle piece 321 is provided at one end of each baffle plate 320 away from the hinged side of the pressure cover 300 and the base 100.

[0049] In this embodiment, the baffle 320 can be driven to slide forward and backward along the guide groove 330 by the toggle piece 321 to control the baffle 320 to open or close the give way groove 310, thereby adjusting the number of holes punched each time. When the pressure cover 300 is opened, an opening is formed on one side between the pressure cover 300 and the base 100, which is convenient for operating the toggle piece 321 at one end of the baffle 320 through the opening.

[0050] In order to limit the baffle 320 in the guide groove 330, a pressure strip 340 is provided on the lower side of the pressure cover 300. The pressure strip 340 is arranged perpendicular to each guide groove 330 and is pressed outside the baffle 320 between the make way groove 310 and the toggle piece 321. The two side ends of the pressure strip 340 are fixed to the two sides of the pressure cover 300 by screws respectively.

[0051] In this embodiment, refer to Figure 4 and Figure 5 A detachable scrap box 140 is provided at the bottom of the base 100, and the scraps generated by punching can be collected in the scrap box 140. The scrap box 140 can be removed from the base 100 to facilitate dumping of the collected scraps.

[0052] In this embodiment, refer to Figure 1-Figure 4 A positioning ruler 400 is provided on one side end of the base 100 and is located on the extension line of the paper slot 110. The positioning ruler 400 is provided with at least one positioning column 410 and a mounting slot 420 for mounting the positioning column 410. The mounting slot 420 connects the side and the top of one side of the positioning ruler 400. The lower part of the positioning column 410 is hinged in the mounting slot 420. When the positioning column 410 rotates to face upward, its top protrudes from the top surface of the positioning ruler 400. When the positioning column 410 rotates to face the side, its top retreats to the lower side of the top surface of the positioning ruler 400. When punching holes in paper, it is generally necessary to punch several groups of holes in succession. When punching the holes at the back, the positioning column 410 can be positioned in the holes punched in front of the paper, so as to position the distance between the front and rear groups of holes. When the positioning column 410 is not in use, the positioning column 410 can be rotated to the side to be retracted.

[0053] Preferably, two positioning posts 410 are provided along the length direction of the positioning ruler 400. By providing two positioning posts 410 on the positioning ruler 400, when one positioning post 410 is in use, the other positioning post 410 needs to be retracted, and different holes on the paper are positioned by different positioning posts 410, so that the punching spacing between two adjacent groups of holes can be adjusted.

[0054] In this embodiment, refer to Figure 6 and Figure 8 The positioning ruler 400 is detachably connected to the side end of the base 100, specifically adopting a plug-in connection method. When in use, the positioning ruler 400 is installed, and when not in use, the positioning ruler 400 is removed, thereby storing the positioning ruler 400.

[0055] In another embodiment, one end of the positioning ruler 400 is hinged to the base 100, so that the positioning ruler 400 can be folded and stored on one side of the base 100 or unfolded to the extension line of the paper slot 110. When in use, the positioning ruler 400 can be unfolded to the extension line of the paper slot 110, and when not in use, the positioning ruler 400 can be rotated to one side of the base 100, so as to be folded.

[0056] Reference Figure 4 and Figure 5 The guide hole 120 is a stepped hole, including an upper small hole section 121 and a lower large hole section 122. A section of the punching knife 200 that cooperates with the guide hole 120 is a stepped shaft, including an upper small diameter section 230 and a lower large diameter section 240. The upper small diameter section 230 is adapted to the upper small hole section 121, and the lower large diameter section 240 is adapted to the lower large hole section 122. In this way, when the punching knife 200 rebounds under the action of the reset spring 220, the rebound height of the punching knife 200 can be limited by the step hole.

[0057] Example 2

[0058] like Figure 9-13 As shown, Example 2 provides a multi-hole punching machine with adjustable number of holes. The technical solution of this example is basically the same as that of Example 1, except that the structure of the punching knife rebound limiter is different.

[0059] Reference Fig.11 , Fig.12 and Fig.13The guide hole 120 is an equal-diameter hole, and a section of the punching knife 200 that cooperates with the guide hole 120 is an optical axis. A limiting member 150 is installed on the upper side of the base 100, and a plurality of clearance holes 151 are provided on the limiting member 150. The upper ends of the punching knives 200 pass through the clearance holes 151 one by one, and the support ring 210 outside the punching knife 200 is limited to the lower side of the clearance hole 151. In this way, when the punching knife 200 rebounds under the action of the reset spring 220, the rebound height of the punching knife 200 can be limited by the limiting member 150. Compared with the structure of Example 1, this embodiment can reduce the processing difficulty and reduce the manufacturing cost.

[0060] Specifically, the limiting member 150 includes a U-shaped groove portion 152 with openings facing each other and folded edges 153 folded outward from the two side edges of the U-shaped groove portion 152. The positioning hole 151 is opened on the top plate of the U-shaped groove portion 152. Connecting columns 160 are provided on both sides of the guide hole 120 on the upper side of the base 100. The folded edges 153 on both sides of the U-shaped groove portion 152 are respectively fixed to the corresponding connecting columns 160 by screws, which is convenient for assembly.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

Claims

1. A multi-hole punch with adjustable number of holes, characterized in that: include: A base, wherein a paper slot for inserting paper is provided on the side of the base, a row of guide holes is provided on the upper side of the paper slot, and a row of paper cutting holes is provided on the lower side of the paper slot, and each of the guide holes is aligned with each of the paper cutting holes; A plurality of punching knives, each of which is adapted to fit in each of the guide holes in a one-to-one correspondence, each of which is provided with a support ring located above the guide hole, and each of which is sleeved with a return spring supported between the base and the support ring; A pressure cover is arranged on the upper side of the base and can be pressed down relative to the base. The lower side of the pressure cover is provided with a clearance groove for the upper end of each punching knife to be inserted and a baffle corresponding to the upper end of each punching knife. Each baffle can respectively open or close the clearance groove corresponding to the upper end of each punching knife.

2. The multi-hole punching machine with adjustable number of holes according to claim 1, characterized in that: One side of the pressure cover is hinged to the upper part of the base so that the pressure cover can be pressed down and reset by rotating the pressure cover.

3. The multi-hole punching machine with adjustable number of holes according to claim 2, characterized in that: The lower side of the pressure cover is provided with a plurality of guide grooves corresponding to each of the punching knives, and each of the baffles is slidably adapted in each of the guide grooves. The baffles can be slid along the guide grooves to open or close the corresponding clearance grooves at the upper ends of the punching knives. Each of the baffles is provided with a downwardly bent toggle piece at one end away from the hinged side of the pressure cover and the base.

4. The multi-hole punching machine with adjustable number of holes according to claim 3, characterized in that: A pressure strip is provided on the lower side of the pressure cover, and the pressure strip is arranged perpendicular to each of the guide grooves and pressed on the outside of the baffle plate at a position between the give way groove and the toggle plate.

5. The multi-hole punching machine with adjustable number of holes according to claim 1, characterized in that: A detachable paper scrap box is provided at the bottom of the base.

6. The multi-hole punching machine with adjustable number of holes according to claim 1, characterized in that: One side end of the base is provided with a positioning ruler located on the extension line of the paper trough, and two positioning columns and a mounting groove for mounting the positioning columns are provided on the positioning ruler along the length direction, and the mounting groove is connected to the side and the top of one side of the positioning ruler, and the lower part of the positioning column is hinged in the mounting groove, and when the positioning column is rotated to face the upper part, the top part thereof protrudes from the top surface of the positioning ruler, and when the positioning column is rotated to face the side part, the top part thereof retreats to the lower side of the top surface of the positioning ruler.

7. The multi-hole punching machine with adjustable number of holes according to claim 6, characterized in that: One end of the positioning ruler is hinged to the base, so that the positioning ruler can be folded and stored on one side of the base or unfolded to the extension line of the paper slot; Alternatively, the positioning ruler is detachably connected to the side end of the base.

8. The multi-hole punching machine with adjustable number of holes according to any one of claims 1 to 7, characterized in that: The guide hole is a stepped hole, including an upper small hole section and a lower large hole section. The section of the punch that cooperates with the guide hole is a stepped shaft, including an upper small diameter section and a lower large diameter section. The upper small diameter section is adapted to the upper small hole section, and the lower large diameter section is adapted to the lower large hole section.

9. The multi-hole punching machine with adjustable number of holes according to any one of claims 1 to 7, characterized in that: The guide hole is an equal-diameter hole, and a section of the punching knife that cooperates with the guide hole is an optical axis. A limiting member is installed on the upper side of the base, and a plurality of clearance holes are provided on the limiting member. The upper ends of the punching knives pass through the clearance holes one by one, and the support ring outside the punching knife is limited to the lower side of the clearance hole.

10. The multi-hole punching machine with adjustable number of holes according to claim 9, characterized in that: The limiting member includes a U-shaped groove portion with openings facing each other and folded edges folded outward from the two side edges of the U-shaped groove portion, the clearance hole is opened on the top plate of the U-shaped groove portion, and connecting columns are provided on both sides of the guide hole on the upper side of the base, and the folded edges on both sides of the U-shaped groove portion are respectively fixed to the corresponding connecting columns by screws.

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