Snap-on impact punch

Abstract

The utility model relates to printing and packaging technical field discloses a buckle type impact male die, including male die, profiling paper card and female die, the upper end of male die is provided with knock out boss, the outside of knock out boss is provided with a plurality of card slots, the profiling paper card is covered in knock out boss, the inside of profiling paper card is provided with a plurality of with corresponding the card buckle of card slot, the female die is provided with film, and the size of film completely covers female die knock out range, the utility model has the advantages of replacing traditional adhesive connection by mechanical clamping structure, effectively protecting paper surface from being damaged in the impact process, and improving forming quality.

Description

Technical Field

[0001] This utility model relates to the field of printing and packaging technology, specifically to a snap-fit ​​impact punch. Background Technology

[0002] In the existing UV printing embossing process, in order to avoid defects such as cracking and bubbles in the face paper, the traditional solution adopts a lamination embossing process, which requires additional lamination and tearing processes, resulting in a higher scrap rate of face paper, increased labor and material costs, and the need to invest in lamination machines as fixed assets.

[0003] To address the aforementioned issues, CN119459031A describes a UV printing paper embossing method and embossing mold, proposing a solution of attaching a patterned paper card to the embossing mold. However, this solution has significant drawbacks: the patterned paper card is fixed by adhesive, and the adhesive residue needs to be cleaned when replacing it, which is cumbersome and time-consuming. The adhesive residue will lift the corresponding position of the patterned part, directly affecting the flatness of the top of the patterned part and the quality of the paper surface forming. Utility Model Content

[0004] The technical problem this invention aims to solve is that existing methods of bonding the shaped paper card to the impact die with adhesive result in low efficiency in replacing the shaped paper card and may affect the quality of the paper surface forming. The objective is to provide a snap-fit ​​impact die that replaces the traditional adhesive connection with a mechanical snap-fit ​​structure, effectively protecting the paper surface from damage during impact and improving the forming quality.

[0005] This utility model is achieved through the following technical solution: A snap-fit ​​impact punch includes a male die, a shaped paper card, and a female die. The upper end of the male die is provided with an impact boss, and the outer side of the impact boss is provided with several slots. The shaped paper card is sleeved on the impact boss, and the inner side of the shaped paper card is provided with several snaps that engage with the corresponding slots. The female die is provided with a film sheet, the size of which completely covers the impact area of ​​the female die.

[0006] The beneficial effects of this utility model are that by setting a slot on the embossing platform of the male mold, and designing a matching buckle on the inner side of the shaped paper card, the shaped paper card can be quickly fitted and fastened onto the male mold without the need for glue, thereby improving the efficiency of changing the shaped paper card and avoiding the cleaning difficulties and time waste caused by glue. At the same time, the buckle connection ensures that the shaped paper card is accurately positioned and firmly attached, avoiding displacement or uneven pressure that may be caused by glue. Combined with the film covering the embossing area on the female mold, it effectively protects the paper surface from damage during the impact process and improves the forming quality.

[0007] In some embodiments, the embossing boss is rectangular in shape, and a first support is provided at the bottom of the embossing boss. The edge of the first support is located on the outer side of the embossing boss, and the slot is connected to the outer side of the first support. By providing a first support at the bottom of the embossing boss, the first support forms a reliable mounting reference surface, allowing the template paper to be quickly and accurately positioned horizontally when it is fitted, preventing tilting. At the same time, by placing the slot on the first support, the point of engagement force is transferred from the delicate side of the embossing boss to the more robust support structure, which protects the shape accuracy of the embossing boss and enhances the mechanical strength and stability of the snap-fit ​​connection.

[0008] In some embodiments, at least one slot is provided on each side wall of the first support. Providing at least one slot on each side wall of the first support enables omnidirectional and uniform constraint and fixation of the embossed paper card, ensuring that the embossed paper card will not loosen or shift in any direction due to uneven force during impact, thereby guaranteeing the positional accuracy and consistent forming quality of the embossed pattern.

[0009] In some embodiments, the buckle has an L-shaped cross-section, the slot has a 7-shaped cross-section, and the cavity thickness between the slot and the first support is 0.3mm-0.5mm thicker than the buckle thickness. By specifying the cross-sectional shapes of the buckle and slot as L-shaped and 7-shaped, the combination of the L-shape and 7-shape forms an efficient hook structure, making installation and disassembly extremely convenient with simple vertical insertion and extraction forces. Furthermore, making the cavity thickness between the slot and the first support 0.3mm-0.5mm thicker than the buckle thickness prevents the template paper from shaking during operation.

[0010] In some embodiments, the inner wall of the card slot is provided with several positioning grooves, which extend along the height direction of the card slot. The inner wall of the buckle is provided with several positioning protrusions, which extend along the height direction of the buckle. The positioning grooves and corresponding positioning protrusions are tightly fitted together. By providing mutually tightly fitted positioning grooves and positioning protrusions, precise vertical positioning is added to the side connection between the buckle and the card slot, effectively preventing the paper card from shifting or loosening in the vertical direction, and ensuring a tight fit between the paper card and the mold support surface. This tight fit greatly enhances the structural rigidity and stability of the entire component when subjected to high-frequency impact loads, avoiding a decrease in embossing quality due to small displacements.

[0011] In some embodiments, the cross-section of the positioning groove is arc-shaped, triangular, or rectangular. By further defining the cross-sectional shape of the positioning groove as arc-shaped, triangular, or rectangular, diverse positioning schemes are provided to adapt to different needs. Arc-shaped grooves facilitate guidance, alignment, and installation; triangular grooves provide stronger resistance to reverse displacement (self-locking effect); and rectangular grooves can withstand greater lateral shear forces.

[0012] In some embodiments, the embossed card includes an embossed portion and a second support. The second support is located at the lower end of the embossed portion, the embossed portion is fitted onto the embossed protrusion, and the second support is fitted onto the first support. By fitting the embossed portion onto the embossed protrusion and the second support onto the first support, a clear layered fit is achieved between the mold and the embossed card. The second support increases the contact area with the mold and the first support, thereby distributing the impact pressure more evenly. This protects the embossed card from damage and ensures stable pressure transmission, ultimately contributing to a clear embossed effect without indentations or defects.

[0013] In some embodiments, the buckle is disposed on the inner sidewall of the second support, and the width of the second support extending beyond the outer periphery of the protrusion is greater than the thickness of the buckle. By disposing the buckle on the inner sidewall of the second support and making its width greater than its thickness, interference between the buckle and the first support is prevented, ensuring a tight fit between the conformal card and the surface of the mold support.

[0014] In some embodiments, venting grooves are provided at each of the four corners of the shaped paper card, extending from the middle of the second support to the bottom edge of the shaped paper card. By providing venting grooves extending to the bottom edge at the four corners of the shaped paper card, an effective escape channel is provided for the air between the mold and the shaped paper card when they are tightly fitted together. This prevents the formation of an air cushion effect due to air compression during impact, thus preventing bulges from forming on the surface of the formed paper and affecting its appearance quality.

[0015] In some embodiments, the male mold is a resin mold, the female mold is a copper mold, and the conformal card uses 250g yellow-core white cardstock or white-core white cardstock. The resin male mold is lightweight, easy to process into complex card slot structures, and wear-resistant; the copper female mold has high hardness, good thermal conductivity, and durability, and can cooperate well with the film to protect the paper surface; the 250g yellow / white-core white cardstock achieves the best balance between strength, stiffness, durability, and cost, can withstand multiple impacts, can clearly form patterns, and is easy to punch out precise snap-fit ​​structures.

[0016] Compared with the prior art, this utility model has the following advantages and beneficial effects: 1. A slot is set on the embossing platform of the male mold, and a matching buckle is designed on the inside of the template card, so that the template card can be quickly fitted and locked onto the male mold without the need for glue. This improves the efficiency of changing template cards, avoids the cleaning difficulties and time waste caused by glue, and avoids the displacement or uneven pressure that may be caused by glue. Combined with the film covering the embossing area on the female mold, it effectively protects the paper surface from damage during the impact and improves the forming quality.

[0017] 2. By setting venting grooves extending to the bottom edge at the four corners of the molded paper card, an effective escape channel is provided for the air between the mold and the molded paper card when they are tightly fitted. This prevents the air from being compressed and unable to escape during impact, thus preventing bulges from forming on the surface of the formed paper and affecting the appearance quality of the formed paper.

[0018] 3. Set up mutually tight-fitting positioning grooves and positioning protrusions, and add precise vertical positioning to the side connection between the buckle and the slot, which effectively prevents the paper card from moving or loosening in the vertical direction, and ensures that the paper card fits tightly with the mold support surface. This tight fit greatly enhances the structural rigidity and stability of the entire component when subjected to high-frequency impact loads, and avoids the decline in embossing quality caused by small displacements. Attached Figure Description

[0019] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings: Figure 1 This is a partial structural diagram of the present invention; Figure 2 This is a top view of the shaped paper card in this utility model after the top has been removed; Figure 3 This utility model Figure 2 Sectional view of AA; Figure 4 This is a top view of the male mold in this utility model; Figure 5 This is the front view of the public mold in this utility model; Figure 6 This is a structural diagram of the female mold in this utility model; Figure 7 This utility model Figure 2 A magnified view of section K in the middle; Figure 8 This utility model Figure 4 Enlarged view of section K1; Figure 9 This is a top view of the present invention when the slot and the buckle are engaged.

[0020] The attached diagram shows the markings and corresponding component names: Female mold 10, film 11, male mold 20, embossed boss 21, first support 211, slot 22, positioning groove 23, patterned paper card 30, buckle 31, positioning boss 311, second support 32, venting groove 33, embossed part 34. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.

[0022] Throughout this specification, references to "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in connection with that embodiment or example is included in at least one embodiment of the present invention. Therefore, the phrases "an embodiment," "an example," "an example," or "an example" appearing in various places throughout the specification do not necessarily refer to the same embodiment or example. Furthermore, specific features, structures, or characteristics can be combined in one or more embodiments or examples in any suitable combination and / or sub-combination. Moreover, those skilled in the art will understand that the illustrations provided herein are for illustrative purposes only and are not necessarily drawn to scale. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0023] In the description of this utility model, the terms "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "high", "low", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to facilitate the description of this utility model and to simplify the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0024] The terms "first," "second," etc., used in this utility model are merely for clarity of description and are not intended to limit any order or emphasize importance. Furthermore, the term "connection" as used herein, unless otherwise specified, can refer to a direct connection or an indirect connection via other components. Example

[0025] like Figures 1-9As shown, this embodiment 1 provides a snap-fit ​​31 type impact punch, including a male mold 20, a shaped paper card 30, and a female mold 10. The upper end of the male mold 20 is provided with an embossing boss 21, and the outer side of the embossing boss 21 is provided with several slots 22. The shaped paper card 30 is fitted onto the embossing boss 21, and the inner side of the shaped paper card 30 is provided with several snap-fits 31 that engage with the corresponding slots 22. The female mold 10 is provided with a film sheet 11, the size of which completely covers the embossing area of ​​the female mold 10. The snap-fit ​​31 connection ensures accurate positioning and firm adhesion of the shaped paper card 30, avoiding displacement or uneven pressure that may be caused by adhesive. Combined with the film sheet 11 covering the embossing area on the female mold 10, it effectively protects the paper surface from damage during impact, improving the forming quality.

[0026] See Figures 1-5 The embossed protrusion 21 is rectangular in shape, and a first support 211 is provided at the bottom of the embossed protrusion 21. The edge of the first support 211 is located on the outer side of the embossed protrusion 21, and the slot 22 is connected to the outer side of the first support 211. By providing the first support 211 at the bottom of the embossed protrusion 21, the first support 211 forms a reliable mounting reference surface, enabling the conformal paper card 30 to be quickly and accurately positioned horizontally when it is fitted, preventing tilting. At the same time, by setting the slot 22 on the first support 211, the point of engagement force is transferred from the delicate side of the embossed protrusion 21 to the more robust support structure, which not only protects the shape accuracy of the embossed protrusion 21, but also enhances the mechanical strength and stability of the buckle 31 connection.

[0027] See Figures 1-5 Each side wall of the first support 211 is provided with at least one slot 22. The presence of at least one slot 22 on each side wall of the first support 211 enables all-round and uniform constraint and fixation of the embossed paper card 30, ensuring that the embossed paper card 30 will not loosen or shift in any direction due to uneven force during the impact process, thereby ensuring the positional accuracy and consistent forming quality of the embossed pattern.

[0028] See Figures 7-9 The buckle 31 has an L-shaped cross-section, and the slot 22 has a 7-shaped cross-section. The cavity thickness between the slot 22 and the first support 211 is 0.3mm-0.5mm thicker than the buckle 31. By specifying the cross-sectional shapes of the buckle 31 and the slot 22 as L-shaped and 7-shaped, the combination of the L-shape and the 7-shape forms an efficient hook structure, making installation and disassembly extremely convenient as it only requires simple vertical insertion and extraction force. Furthermore, making the cavity thickness between the slot 22 and the first support 211 0.3mm-0.5mm thicker than the buckle 31 prevents the shaped paper card 30 from shaking during operation.

[0029] See Figures 7-9 The inner wall of the slot 22 is provided with several positioning grooves 23, which extend along the height direction of the slot 22. The inner wall of the buckle 31 is provided with several positioning protrusions, which extend along the height direction of the buckle 31. The positioning grooves 23 and the corresponding positioning protrusions are tightly fitted together. By setting the mutually tightly fitted positioning grooves 23 and positioning protrusions, precise vertical positioning is added to the side connection between the buckle 31 and the slot 22, effectively preventing the shaped paper card 30 from shifting or loosening in the vertical direction, and ensuring a tight fit between the shaped paper card 30 and the support surface of the mold 20. This tight fit greatly enhances the structural rigidity and stability of the entire component when subjected to high-frequency impact loads, and avoids the decrease in embossing quality caused by small displacements.

[0030] See Figures 7-9 The cross-section of the positioning groove 23 is arc-shaped, triangular, or rectangular. By further defining the cross-sectional shape of the positioning groove 23 as arc-shaped, triangular, or rectangular, diverse positioning schemes are provided to adapt to different needs. Arc-shaped grooves facilitate guidance, alignment, and installation; triangular grooves provide stronger resistance to reverse displacement (self-locking effect); and rectangular grooves can withstand greater lateral shear forces.

[0031] See Figures 1-3 The embossed paper card 30 includes an embossed portion 34 and a second support 32. The second support 32 is located at the lower end of the embossed portion 34. The embossed portion 34 is fitted onto the embossing boss 21, and the second support 32 is fitted onto the first support 211. By fitting the embossed portion 34 onto the embossing boss 21 and the second support 32 onto the first support 211, a clear layered fit is achieved between the mold 20 and the embossed paper card 30. The second support 32 increases the contact area with the mold 20 and the first support 211, thereby distributing the impact pressure more evenly. This protects the embossed paper card 30 from damage and ensures stable pressure transmission, ultimately contributing to a clear outline and embossed effect without indentations.

[0032] See Figures 1-3 The buckle 31 is disposed on the inner sidewall of the second support 32, and the width of the second support 32 extending beyond the outer periphery of the protrusion 34 is greater than the thickness of the buckle 31. By disposing of the buckle 31 on the inner sidewall of the second support 32 and making its width greater than its thickness, interference between the buckle 31 and the first support 211 is prevented, ensuring a tight fit between the conformal paper card 30 and the support surface of the mold 20.

[0033] See Figures 1-3Each of the four corners of the shaped paper card 30 is provided with an exhaust groove 33, which extends from the middle of the second support 32 to the bottom edge of the shaped paper card 30. By providing exhaust grooves 33 extending to the bottom edge at the four corners of the shaped paper card 30, an effective escape channel is provided for the air between the mold 20 and the shaped paper card 30 when they are tightly fitted together. This prevents the formation of an air cushion effect due to the air being compressed and unable to escape during impact, and prevents bulges from forming on the surface of the formed paper, thus affecting the appearance quality of the formed paper.

[0034] Specifically, the male mold 20 is a resin mold, the female mold 10 is a copper mold, and the conformal paper card 30 uses 250g yellow-core white cardstock or white-core white cardstock. The resin male mold 20 is lightweight, easy to process into complex card slot 22 structures, and wear-resistant; the copper female mold 10 has high hardness, good thermal conductivity, and durability, and can cooperate well with the film 11 to protect the paper surface; the 250g yellow-core / white-core white cardstock achieves the best balance between strength, stiffness, durability, and cost, can withstand multiple impacts, can clearly form patterns, and is easy to punch out precise snap-fit ​​31 structures.

[0035] Specifically, the thickness of the film 11 is 0.11mm-0.13mm, and the included angle α formed by the two ends of the film 11 along the bending direction and the molded surface of the embossing die 103 is 15°-20°.

[0036] During assembly, insert the embossed part 34 of the template paper card 30 into the embossing boss 21 and the second support 32 into the first support 211, align the buckle 31 with the slot 22, and gently press the template paper card 30. After the buckle 31 elastically deforms, it is embedded into the slot 22, and the positioning protrusion and the positioning groove 23 are tightly fitted, thus fixing the template paper card 30. Cover the embossing groove of the master mold 10 with the pre-bent film 11, and fasten the magnetic pressure ring. It is instantly fixed by magnetic attraction. After assembly, the template paper card 30 and the embossing boss 21 are coaxial, and the film 11 and the embossing groove are coaxial.

[0037] During operation, the UV printing face paper is placed between the male mold 20 and the female mold 10. The embossing machine drives the female mold 10 to press down (pressure controlled between 3MPa and 5MPa). The embossing part 34 of the shaped paper card 30 and the second support 32 together provide a flat extrusion surface, and the pressure is evenly transmitted to the face paper. During embossing, the air between the face paper and the shaped paper card 30 is quickly discharged through the four corner exhaust grooves 33. The film 11 gradually adheres to the face paper from the center to the edge, which plays a buffering role and prevents the face paper from cracking. After embossing is completed, the female mold 10 rises and the face paper can be removed.

[0038] When disassembling the shaped paper card 30, pry open the buckle 31 through the gripping notch on the outer ring of the shaped paper card 30 (a semi-circular notch with a radius of 3mm can be opened on the outer ring of the second support 32) to disengage the buckle 31 from the card slot 22, and then remove it upwards; when replacing the film 11, remove the magnetic pressure ring, replace the new film 11, and then reattach the pressure ring, leaving no adhesive residue.

[0039] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A snap-fit ​​impact punch, characterized in that, include: The male mold has an embossed boss at its upper end, and several slots are provided on the outer side of the embossed boss. A shaped paper card is fitted onto the embossing platform, and the inner side of the shaped paper card is provided with several buckles that engage with the corresponding card slots; A master mold, on which a film is provided, the size of which completely covers the embossing area of ​​the master mold.

2. The snap-fit ​​impact punch according to claim 1, characterized in that, The embossing boss is in the shape of a rectangular plate. A first support is provided at the bottom of the embossing boss. The edge of the first support is located on the outside of the embossing boss. The slot is connected to the outside of the first support.

3. The snap-fit ​​impact punch according to claim 2, characterized in that, At least one slot is provided on each side wall of the first pier.

4. The snap-fit ​​impact punch according to claim 3, characterized in that, The buckle has an L-shaped cross-section, the slot has a 7-shaped cross-section, and the cavity thickness between the slot and the first support is 0.3mm-0.5mm thicker than the buckle thickness.

5. The snap-fit ​​impact punch according to claim 3, characterized in that, The inner wall of the slot is provided with several positioning grooves, which extend along the height direction of the slot. The inner wall of the buckle is provided with several positioning protrusions, which extend along the height direction of the buckle. The positioning grooves and the corresponding positioning protrusions are tightly fitted together.

6. The snap-fit ​​impact punch according to claim 5, characterized in that, The cross-section of the positioning groove is arc-shaped, triangular, or rectangular.

7. The snap-fit ​​impact punch according to claim 2, characterized in that, The shaped paper card includes an embossed part and a second support. The second support is located at the lower end of the embossed part. The embossed part is fitted onto the embossed protrusion, and the second support is fitted onto the first support.

8. The snap-fit ​​impact punch according to claim 7, characterized in that, The buckle is disposed on the inner side wall of the second support, and the width of the second support extending beyond the outer periphery of the protrusion is greater than the thickness of the buckle.

9. The snap-fit ​​impact punch according to claim 7, characterized in that, Venting grooves are provided at all four corners of the shaped paper card, and the venting grooves extend from the middle of the second support to the bottom edge of the shaped paper card.

10. The snap-fit ​​impact punch according to claim 7, characterized in that, The male mold is a resin mold, the female mold is a copper mold, and the shaped paper card is made of 250g yellow core white cardboard or white core white cardboard.

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