Double-limiting punching cutter die suitable for TPU (Thermoplastic Polyurethane) material

Abstract

The utility model relates to the technical field of TPU packaging box processing equipment, in particular to a double-limiting punching cutter die suitable for TPU materials, which comprises an upper die assembly and a lower die assembly, and a punching cutter part is arranged between the upper die assembly and the lower die assembly; the lower die assembly comprises a lower die plate, and a plurality of positioning grooves allowing box bodies to be inserted therein are formed in the lower die plate. The punching cutter part comprises an inner annular punching cutter and an outer annular punching cutter which are arranged on the outer side of each positioning groove, the inner annular punching cutters and the outer annular punching cutters are sequentially arranged from the centers of the positioning grooves to the outer sides of the positioning grooves, and the outer annular punching cutters are higher than the inner annular punching cutters. The box body cutting device has the effect of ensuring the box body cutting precision.

Description

Technical Field

[0001] The present application relates to the technical field of TPU packaging box processing equipment, and in particular to a double-limited hedging die suitable for TPU materials. Background Art

[0002] Our company processes and produces a medicine packaging box made of TPU material, which includes a box body and a convex edge set on the box body, and the convex edge is used for heat-sealing plastic film. At present, the overall processing of the packaging box is to make a whole piece of TPU sheet through blister forming and then cut it, and in order to ensure the subsequent heat-sealing effect, the accuracy of the size after cutting needs to be guaranteed.

[0003] Because the material of thermoforming products is TPU, which is softer than general PET / PS blister materials, the TPU material will deform during normal cutting and trimming after blister forming, resulting in misalignment in cutting and failure to meet the symmetry tolerance after cutting. Utility Model Content

[0004] In order to solve the above technical problems, the present application provides a double-limited hedge cutter die suitable for TPU materials, which has the advantage of ensuring the cutting accuracy of the box body.

[0005] In order to achieve the above object, the technical solution of the utility model is as follows:

[0006] A double-limited counter-punch knife die suitable for TPU materials, comprising an upper die assembly and a lower die assembly, wherein a punching knife is arranged between the upper die assembly and the lower die assembly;

[0007] The lower mold assembly comprises a lower mold plate, and the lower mold plate is provided with a plurality of positioning grooves for the box body to be inserted;

[0008] The punching blade comprises an inner annular punching blade and an outer annular punching blade arranged on the outside of each positioning groove. The inner annular punching blade and the outer annular punching blade are arranged in sequence from the center to the outside of the positioning groove, and the height of the outer annular punching blade is higher than that of the inner annular punching blade.

[0009] The above technical solution is implemented so that the box bodies connected together after blister forming can be inserted into the positioning grooves at the same time, so that the positioning grooves play a role of fixing and limiting the box bodies, so as to prevent the box bodies from arching and deforming outwards during the cutting process, thereby causing the subsequent deformation and displacement of the box bodies, thereby ensuring the dimensional accuracy after cutting; when the lower mold assembly moves down to punch the box body, it drives the outer edge of the box body to be gradually pressed against a number of outer annular punching knives, so that the box body is first cut into a number of independent individuals by the outer annular punching knives, so as to prevent the deformation of one box body from causing other box bodies to follow the deformation. Then the upper mold assembly continues to move down, so that the convex edge of each box body is cut and trimmed by its own inner annular punching knife, thereby ensuring the dimensional accuracy of the box body cutting.

[0010] As a preferred solution of the present application, the upper mold assembly includes an upper mold plate, and the upper mold plate is provided with a plurality of support blocks arranged in one-to-one correspondence with the positioning grooves, and the support blocks are inserted in the positioning grooves.

[0011] By implementing the above technical solution, when the lower mold assembly moves downward, the support block above it will be inserted into the box body and then into the positioning groove, so that the side wall of the box body is clamped and fixed by the support block and the positioning groove, thereby preventing its deformation and ensuring the cutting quality.

[0012] As a preferred solution of the present application, the support block is detachably locked on the upper template by screws.

[0013] To implement the above technical solution, different positioning blocks can be replaced to meet the positioning requirements of boxes of different shapes.

[0014] As a preferred solution of the present application, the lower template includes a base plate and a positioning plate arranged on the base plate, and the positioning groove is arranged on the positioning plate.

[0015] By implementing the above technical solution, the positioning requirements of different boxes can be met by replacing the positioning plates with positioning grooves of different sizes and shapes.

[0016] As a preferred solution of the present application, a plurality of guide posts are arranged on the lower template, and a slide groove for the guide posts to slide is arranged on the upper template.

[0017] By implementing the above technical solution, the upper mold assembly is guided and positioned by a plurality of guide columns when it moves downward, so as to ensure that the lower mold assembly moves downward smoothly, thereby ensuring that it does not tilt downward and cause cutting deviation, thereby ensuring the forming size of the box body.

[0018] In summary, the present application includes at least one of the following beneficial technical effects:

[0019] 1. The box bodies connected together after blister forming can be inserted into the positioning grooves at the same time, so that the positioning grooves can play a role of fixing and limiting the box bodies, so as to prevent the box bodies from arching outwards and deforming during the cutting process, thereby causing the subsequent deformation and displacement of the box bodies, thereby ensuring the dimensional accuracy after cutting;

[0020] 2. When the lower die assembly moves down to punch the box body, it drives the outer edge of the box body to gradually press against several outer annular punching knives, so that the box body is first cut into several independent individuals by the outer annular punching knives to prevent the deformation of one box body from causing other box bodies to follow the deformation. Then the upper die assembly continues to move down, so that the convex edge of each box body is cut and trimmed by its own inner annular punching knife, thereby ensuring the dimensional accuracy of the box body cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0023] Figure 2 It is an exploded view of the embodiment itself.

[0024] Figure 3 It is a structural schematic diagram of the upper mold assembly in an embodiment of the present application.

[0025] Figure numerals: 1. lower mold assembly; 11. lower mold plate; 111. bottom plate; 112. positioning plate; 12. positioning groove; 13. guide column; 2. upper mold assembly; 21. upper mold plate; 22. support block; 23. slide groove; 24. avoidance groove; 3. punching knife; 31. inner annular punching knife; 32. outer annular punching knife. DETAILED DESCRIPTION

[0026] The following is combined with Figure 1-3 This application is described in further detail.

[0027] The present application embodiment discloses a double-limited hedging die suitable for TPU materials. Figure 1 and Figure 2 The double-limited punching die suitable for TPU materials includes an upper die assembly 2 and a lower die assembly 1, and a punching knife 3 is arranged between the upper die assembly 2 and the lower die assembly 1.

[0028] Reference Figure 1 and Figure 2 The lower mold assembly 1 includes a lower mold plate 11, and a plurality of positioning grooves 12 for inserting the box body are arranged on the lower mold plate 11, so that the box bodies connected together after the vacuum forming can be inserted into the positioning grooves 12 at the same time, so that the positioning grooves 12 play a role of fixing and limiting the box body, so as to prevent the box body from arching outward and deforming during the cutting process, thereby causing the subsequent cutting box body deformation and displacement, thereby ensuring the dimensional accuracy after cutting. The lower mold plate 11 includes a bottom plate 111 and a positioning plate 112 arranged on the bottom plate 111, and the positioning plate 112 is detachably fixed to the bottom plate 111 by screws or other fasteners, and the positioning grooves 12 are arranged on the positioning plate 112, so that the positioning requirements of different box bodies can be met by replacing the positioning plate 112 with positioning grooves 12 of different sizes and shapes.

[0029] The punching blade 3 includes an inner annular punching blade 31 and an outer annular punching blade 32 arranged outside each positioning groove 12, and the inner annular punching blade 31 and the outer annular punching blade 32 are fixed on the top of the positioning plate 112. The inner annular punching blade 31 and the outer annular punching blade 32 are arranged in sequence from the center to the outside of the positioning groove 12, and the height of the outer annular punching blade 32 is higher than that of the inner annular punching blade 31. As a result, when the lower mold assembly 1 moves down to punch the box body, the outer edge of the box body is gradually pressed against a plurality of outer annular punching blades 32, so that the box body is first cut into a plurality of independent individuals by the outer annular punching blades 32 to prevent the deformation of one box body from causing other box bodies to follow the deformation. Then the upper mold assembly 2 continues to move down, so that the convex edge of each box body is cut and trimmed by the respective inner annular punching blades 31, thereby ensuring the dimensional accuracy of the box body cutting.

[0030] Reference Figure 1 , Figure 2 and Figure 3 The upper mold assembly 2 includes an upper mold plate 21, and a plurality of support blocks 22 corresponding to the positioning grooves 12 are arranged on the upper mold plate 21. The support blocks 22 are inserted into the positioning grooves 12, so that when the lower mold assembly 1 moves downward, the support blocks 22 above it will be inserted into the box body and then inserted into the positioning grooves 12, so that the side walls of the box body are clamped and fixed by the support blocks 22 and the positioning grooves 12, thereby preventing the deformation of the box body and ensuring the quality of cutting. The support blocks 22 are detachably locked on the upper mold plate 21 by screws, so that different support blocks 22 can be replaced to meet the positioning requirements of boxes of different shapes. The upper mold plate 21 is provided with an avoidance groove 24 for the outer annular punching knife to be inserted, so as to prevent the outer annular punching knife 32 from being damaged due to excessive height.

[0031] Reference Figure 1 and Figure 2The lower template 11 is provided with a plurality of guide posts 13, and the upper template 21 is provided with slide grooves 23 for the guide posts 13 to slide, so that when the upper mold assembly 2 moves downward, it is guided and positioned by the plurality of guide posts 13 to ensure that the lower mold assembly 1 moves downward smoothly, thereby ensuring that it does not tilt downward and cause cutting deviation, thereby ensuring the molding size of the box body.

[0032] The implementation principle of a double-limited punching knife die suitable for TPU materials in an embodiment of the present application is as follows: when the lower die assembly 1 moves downward, the support block 22 above it will be inserted into the box body and then inserted into the positioning groove 12, so that the side wall of the box body is clamped and fixed by the support block 22 and the positioning groove 12, thereby preventing its deformation and thus ensuring the quality of cutting. When the lower die assembly 1 moves downward to punch the box body, it drives the outer edge of the box body to be gradually pressed against a number of outer annular punching knives 32, so that the box body is first cut into a number of independent individuals by the outer annular punching knives 32, so as to prevent the deformation of one box body from causing other box bodies to follow the deformation. Then the upper die assembly 2 continues to move downward, so that the convex edge of each box body is cut and trimmed by its respective inner annular punching knife 31, thereby ensuring the dimensional accuracy of the box body cutting.

[0033] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. Double-limited hedging die suitable for TPU materials, characterized by: It comprises an upper die assembly (2) and a lower die assembly, wherein a punching blade (3) is arranged between the upper die assembly (2) and the lower die assembly (1); The lower mold assembly (1) comprises a lower mold plate (11), and the lower mold plate (11) is provided with a plurality of positioning grooves (12) for inserting the box body; The punching blade comprises an inner annular punching blade (31) and an outer annular punching blade (32) which are arranged on the outside of each positioning groove (12); the inner annular punching blade (31) and the outer annular punching blade are arranged in sequence from the center to the outside of the positioning groove (12); the height of the outer annular punching blade is higher than the height of the inner annular punching blade (31).

2. The double-limited hedging die suitable for TPU materials according to claim 1, characterized in that: The upper mold assembly (2) comprises an upper mold plate (21), on which a plurality of support blocks (22) are arranged in one-to-one correspondence with the positioning grooves (12), and the support blocks (22) are inserted into the positioning grooves (12).

3. The double-limited hedging die suitable for TPU material according to claim 2, characterized in that: The support block (22) is detachably locked on the upper template (21) by means of screws.

4. The double-limited hedging die suitable for TPU materials according to claim 1, characterized in that: The lower template (11) comprises a bottom plate (111) and a positioning plate (112) arranged on the bottom plate (111), and the positioning groove (12) is arranged on the positioning plate (112).

5. The double-limited hedging die suitable for TPU material according to claim 2, characterized in that: The lower template (11) is provided with a plurality of guide columns (13), and the upper template (21) is provided with a slide groove (23) for the guide columns (13) to slide.

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