Paperboard punching equipment

Abstract

The utility model discloses paperboard punching equipment which comprises a bottom frame, a bottom plate, a portal frame fixedly assembled on the bottom plate, a positioning unit assembled on the bottom plate and used for positioning a paperboard and at least one group of downward pressing units assembled on the portal frame, and through grooves located under the corresponding downward pressing units are formed in the bottom plate. A supporting plate matched with the downward pressing unit is detachably assembled at the through groove, the downward pressing unit comprises a lifting plate capable of ascending and descending and a punching cutter detachably assembled on the lifting plate, the punching cutter is in a hollow state, and the top and the bottom of the punching cutter are open ends; the lifting plate is provided with an elastic discharging mechanism which is located in the punching knife, the lower end of the elastic discharging mechanism elastically extends out of the lower end of the punching knife, and the elastic discharging mechanism can push the circular paperboard or the kidney-shaped paperboard downwards, so that the circular paperboard or the kidney-shaped supporting plate falls down from the lower end of the punching knife; and it is avoided that the round paperboard or the kidney-shaped paperboard is clamped in the punching knife to affect subsequent punching work, punching work can be conducted continuously, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of cardboard processing, specifically to a cardboard punching device. Background Technology

[0002] Packaging cartons are an indispensable part of modern logistics, bearing the important responsibilities of containing, protecting, and presenting products aesthetically. Some cartons are perforated during the manufacturing process while still in their cardboard form.

[0003] Perforation of cardboard boxes can improve their air permeability, which is beneficial for the transportation and storage of products. It is generally used for cardboard boxes that carry fruits and vegetables. Some cardboard boxes also have oval holes, which, after being made into cardboard boxes, not only achieve the function of air permeability, but also serve as handles, making it convenient for manual handling of the cardboard boxes.

[0004] Chinese patent application CN202322542631.3, entitled "A Perforation Device for Carton and Paperboard Production," discloses a perforation device for carton and paperboard production. This device, equipped with a support platform, electric push rod, first support base, drive motor, and cutting wheel, can cut and perforate carton and paperboard. Waste generated after perforation is collected inside the cutting wheel, thus reducing the random splashing of perforation waste and environmental pollution. This reduces the need for workers to clean up the surrounding environment, thereby reducing their workload and improving their work efficiency.

[0005] However, the above patent still has the following shortcomings: after each carton is punched, the cut circular cardboard will remain in the cutting wheel. Multiple circular cardboard are stacked in the cutting wheel, which will not only affect the normal use of the cutting wheel later, but also make it inconvenient to clean the circular cardboard in the cutting wheel. Therefore, it is necessary to design a cardboard punching device. Utility Model Content

[0006] In view of the above-mentioned technical problems, the purpose of this utility model is to overcome the problem that the circular cardboard cut off in the prior art is inconvenient to clean up when it is located inside the cutting wheel.

[0007] To achieve the above objectives, this utility model provides a cardboard punching device, comprising: a base frame, a base plate fixedly mounted on the top of the base frame, a gantry frame fixedly mounted on the base plate, a positioning unit mounted on the base plate for positioning the cardboard, and at least one set of pressing units mounted on the gantry frame. The base plate is provided with a through groove located directly below the corresponding pressing unit, and a support plate matching the pressing unit is detachably mounted at the through groove.

[0008] The pressing unit includes a liftable lifting plate and a punching knife detachably mounted on the lifting plate. The punching knife is hollow with open ends at the top and bottom. The lifting plate is equipped with an elastic unloading mechanism located inside the punching knife and extending elastically from the bottom of the punching knife.

[0009] Preferably, the punching tool includes a pair of symmetrically arranged arc-shaped blades and a pair of straight blades, and both the arc-shaped blades and the straight blades are detachably mounted on the lifting plate by a number of first bolts;

[0010] A pair of curved blades can fit together to form a circular cutter with a circular cross-section, and a pair of curved blades and a pair of straight blades can form an oval cutter. The lifting plate is provided with a first mounting hole and a second mounting hole that match the curved blades.

[0011] Preferably, the support plate is detachably assembled to the base plate by a number of second bolts, and the support plate is provided with a punching groove that matches the punching tool.

[0012] Preferably, the elastic unloading mechanism includes a slide rod that slides vertically through the lifting plate, a limiting member fixedly mounted on the upper end of the slide rod, a chassis fixedly mounted on the lower end of the slide rod, and a spring sleeved on the slide rod with its two ends respectively in contact with the lifting plate and the chassis.

[0013] Preferably, the pressing unit further includes a connecting frame fixedly connected to the lifting plate, at least one first guide rod fixedly connected to the connecting frame and sliding vertically through the gantry frame, and a drive push rod assembled on the gantry frame and whose moving end is fixedly connected to the connecting frame.

[0014] Preferably, the positioning unit includes a pair of strip-shaped limiting plates that are arranged vertically and are in contact with the upper surface of the base plate. Each strip-shaped limiting plate is fixedly connected with at least one horizontal second guide rod that is perpendicular to its length direction. The edge of the base plate is fixedly fitted with a guide sleeve through which the corresponding second guide rod slides. The guide sleeve is threadedly connected with a locking bolt whose end can abut against the second guide rod.

[0015] Preferably, the base frame is provided with a support part, and a receiving box located directly below the base plate is placed on the support part.

[0016] According to the above technical solution, the cardboard punching device provided by this utility model has the following beneficial effects during use:

[0017] Firstly, the punch is hollow with open ends at the top and bottom, so it is flat. Therefore, when the punch moves downward to cut the cardboard, the local shearing force is large, which is beneficial for punching the cardboard and can prevent the cardboard around the punch from being flattened.

[0018] Secondly, the flexible unloading mechanism pushes the round or oval cardboard downwards, causing the round or oval support plate to fall from the bottom of the punching knife. This prevents the round or oval cardboard from getting stuck in the punching knife and affecting subsequent punching work, thus facilitating continuous punching operations and improving work efficiency.

[0019] Other features and advantages of this utility model will be described in detail in the following detailed description section; and all parts not covered in this utility model are the same as or can be implemented using existing technology. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0021] Figure 1 This is a three-dimensional structural diagram of a cardboard punching device provided in this utility model. Figure 1 ;

[0022] Figure 2 This utility model provides a cardboard punching device. Figure 1 Enlarged view of point A in the middle;

[0023] Figure 3 This is a three-dimensional structural diagram of a cardboard punching device provided in this utility model. Figure 2 ;

[0024] Figure 4 This utility model provides a cardboard punching device. Figure 3 Enlarged view of point B in the middle;

[0025] Figure 5 This is a partial three-dimensional structural diagram of a cardboard punching device provided in this utility model;

[0026] Figure 6 This utility model provides a schematic diagram of the use of the pressing unit of a cardboard punching device. Figure 1 ;

[0027] Figure 7 This utility model provides a schematic diagram of the use of the pressing unit of a cardboard punching device. Figure 2 .

[0028] Explanation of reference numerals in the attached figures

[0029] 1. Base frame; 2. Base plate; 3. Gantry frame; 4. Support plate; 5. Lifting plate; 6. Arc-shaped blade; 7. Straight blade; 8. Second bolt; 9. Drilled through slot; 10. Sliding rod; 11. Limiting component; 12. Spring; 13. Chassis; 14. Connecting frame; 15. First guide rod; 16. Drive push rod; 17. Strip-shaped limiting plate; 18. Second guide rod; 19. Guide sleeve; 20. Locking bolt; 21. Receiving box. Detailed Implementation

[0030] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0031] In this utility model, unless otherwise stated, directional words such as "upper," "lower," "inner," and "outer" included in the terminology only represent the orientation of the term in its conventional use or are common terms understood by those skilled in the art, and should not be regarded as limitations on the term.

[0032] like Figure 1-7 As shown, a cardboard punching device includes: a base frame 1, a base plate 2 fixedly mounted on the top of the base frame 1, a gantry frame 3 fixedly mounted on the base plate 2, a positioning unit mounted on the base plate 2 for positioning the cardboard, and at least one set of pressing units mounted on the gantry frame 3. The base plate 2 is provided with a through groove located directly below the corresponding pressing unit, and a support plate 4 matching the pressing unit is detachably mounted at the through groove.

[0033] The pressing unit includes a lifting plate 5 that can be raised and lowered, and a punching knife that can be detachably mounted on the lifting plate 5. The punching knife is hollow and has open ends at the top and bottom. The lifting plate 5 is equipped with an elastic unloading mechanism located inside the punching knife and with its lower end elastically extending out of the lower end of the punching knife.

[0034] Because the punch is hollow and has open ends at the top and bottom, it is flat. Therefore, when the punch moves downward to cut the cardboard, the local shearing force is large, which is beneficial for punching holes in the cardboard and can prevent the cardboard around the punched area from being flattened.

[0035] The cardboard is quickly positioned by the positioning unit. The lifting plate 5 moves downward. After the elastic unloading mechanism contacts the cardboard, the lifting plate 5 continues to move downward. At this time, the elastic unloading mechanism is compressed, and the lower end of the punching knife is lower than the support plate 4. When the punching knife moves downward to cut the round or oval cardboard, the elastic unloading mechanism will push the round or oval cardboard downward, so that the round or oval support plate 4 falls from the lower end of the punching knife. This prevents the round or oval cardboard from getting stuck in the punching knife and affecting subsequent punching work, so as to facilitate continuous punching operations and improve work efficiency.

[0036] The punching tool includes a pair of symmetrically arranged arc-shaped blades 6 and a pair of straight blades 7. Both the arc-shaped blades 6 and the straight blades 7 are detachably mounted on the lifting plate 5 by a number of first bolts.

[0037] A pair of curved blades 6 can fit together to form a circular cutter with a circular cross-section, and a pair of curved blades 6 and a pair of straight blades 7 can form an oval cutter. The lifting plate 5 is provided with a first mounting hole and a second mounting hole that match the curved blades 6.

[0038] When a circular cutter is needed, remove a pair of straight blades 7 and assemble a pair of curved blades 6 into the corresponding first mounting holes. The pair of curved blades 6 will then form a circular cutter. When an oval cutter is needed, assemble a pair of curved blades 6 into the corresponding second mounting holes, and then assemble a pair of straight blades 7 onto the lifting plate 5. The two ends of the straight blades 7 are respectively attached to the ends of the pair of curved blades 6, thus forming an oval cutter.

[0039] It can switch between oval and round cutters to cut round or oval through slots on the support plate 4 according to actual needs, making it highly practical.

[0040] The support plate 4 is detachably assembled onto the base plate 2 by a number of second bolts 8, and the support plate 4 is provided with a punching groove 9 that matches the punching tool.

[0041] When switching between the circular cutter and the oval cutter, the second bolt 8 must be loosened to remove the support plate 4 so that the support plate 4 with the punching slot 9 that matches the punching knife can be installed.

[0042] The elastic unloading mechanism includes a slide rod 10 that slides vertically through the lifting plate 5, a limiting member 11 fixedly mounted on the upper end of the slide rod 10, a base plate 13 fixedly mounted on the lower end of the slide rod 10, and a spring 12 sleeved on the slide rod 10 and whose two ends respectively abut against the lifting plate 5 and the base plate 13.

[0043] As the lifting plate 5 moves downward, the base plate 13 first contacts the cardboard; the lifting plate 5 continues to slide downward, the slide rod 10 slides upward relative to the lifting plate 5, the spring 12 is further compressed, and the punching knife moves downward to cut the round or oval cardboard. At this time, the spring 12 will push the base plate 13 downward, pushing the round or oval cardboard downward to push the punching knife downward, avoiding it from getting stuck in the punching knife, so as to facilitate continuous punching operations and improve work efficiency.

[0044] The pressing unit also includes a connecting frame 14 fixedly connected to the lifting plate 5, at least one first guide rod 15 fixedly connected to the connecting frame 14 and sliding vertically through the gantry 3, and a drive push rod 16 assembled on the gantry 3 and whose moving end is fixedly connected to the connecting frame 14.

[0045] The drive push rod 16 drives the lifting plate 5 to move vertically through the connecting frame 14.

[0046] The positioning unit includes a pair of strip-shaped limiting plates 17 that are arranged vertically and are in contact with the upper surface of the base plate 2. Each strip-shaped limiting plate 17 is fixedly connected to at least one horizontal second guide rod 18 that is perpendicular to its length direction. The edge of the base plate 2 is fixedly fitted with a guide sleeve 19 through which the corresponding second guide rod 18 slides. The guide sleeve 19 is threadedly connected with a locking bolt 20 whose end can abut against the second guide rod 18.

[0047] When the position of the strip limit plate 17 needs to be adjusted, loosen the locking bolt 20, and the second guide rod 18 can slide on the guide sleeve 19 to adjust the position of the strip limit plate 17. By adjusting the position of the two strip limit plates 17, holes can be punched at different positions on cardboard of different specifications, which is highly practical.

[0048] The base frame 1 is provided with a support part, and a receiving box 21 located directly below the base plate 2 is placed on the support part.

[0049] The receiving box 21 can catch round and oval cardboard, preventing the cut round or oval cardboard from scattering on the ground.

[0050] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0051] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.

[0052] Furthermore, various different embodiments of this utility model can be combined in any way, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.

Claims

1. A cardboard punching device, characterized in that, include: The base frame (1), the base plate (2) fixedly mounted on the top of the base frame (1), the gantry frame (3) fixedly mounted on the base plate (2), the positioning unit for positioning the cardboard mounted on the base plate (2), and at least one set of pressing units mounted on the gantry frame (3). The base plate (2) is provided with a through groove located directly below the corresponding pressing unit. A support plate (4) matching the pressing unit is detachably mounted at the through groove. The pressing unit includes a lifting plate (5) that can be raised and lowered and a punching knife that can be detachably mounted on the lifting plate (5). The punching knife is hollow and has open ends at the top and bottom. The lifting plate (5) is equipped with an elastic unloading mechanism located inside the punching knife and with its lower end elastically extending out of the lower end of the punching knife.

2. The cardboard punching device according to claim 1, characterized in that, The punching tool includes a pair of symmetrically arranged arc-shaped blades (6) and a pair of straight blades (7). The arc-shaped blades (6) and the straight blades (7) are detachably mounted on the lifting plate (5) by a number of first bolts. A pair of the arc-shaped blades (6) can fit together to form a circular cutter with a circular cross-section. A pair of the arc-shaped blades (6) and a pair of the straight blades (7) can form an oval cutter. The lifting plate (5) is provided with a first mounting hole and a second mounting hole that match the arc-shaped blades (6).

3. The cardboard punching device according to claim 2, characterized in that, The support plate (4) is detachably mounted on the base plate (2) by a number of second bolts (8), and the support plate (4) is provided with a punching through groove (9) that matches the punching tool.

4. The cardboard punching device according to claim 1, characterized in that, The elastic unloading mechanism includes a slide rod (10) that slides vertically through the lifting plate (5), a limiting member (11) fixedly mounted on the upper end of the slide rod (10), a chassis (13) fixedly mounted on the lower end of the slide rod (10), and a spring (12) sleeved on the slide rod (10) and whose two ends respectively abut against the lifting plate (5) and the chassis (13).

5. The cardboard punching device according to claim 1, characterized in that, The pressing unit also includes a connecting frame (14) fixedly connected to the lifting plate (5), at least one first guide rod (15) fixedly connected to the connecting frame (14) and sliding vertically through the gantry frame (3), and a drive push rod (16) assembled on the gantry frame (3) and whose moving end is fixedly connected to the connecting frame (14).

6. The cardboard punching device according to claim 1, characterized in that, The positioning unit includes a pair of strip-shaped limiting plates (17) arranged vertically and in contact with the upper surface of the base plate (2). Each strip-shaped limiting plate (17) is fixedly connected with at least one horizontal second guide rod (18) perpendicular to its length direction. The edge of the base plate (2) is fixedly fitted with a guide sleeve (19) through which the corresponding second guide rod (18) slides. The guide sleeve (19) is threadedly connected with a locking bolt (20) whose end can abut against the second guide rod (18).

7. The cardboard punching device according to claim 1, characterized in that, The base frame (1) is provided with a support part, and a receiving box (21) located directly below the base plate (2) is placed on the support part.

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