Blister punch forming mold with identification cover

Abstract

The application discloses a blister punch forming die with a cover body with an identification, which comprises an upper die and a lower die, a plurality of forming die units are arranged between the upper die and the lower die, the forming die unit comprises an outer peripheral die, a die cavity copper head is arranged in the outer peripheral die, a punch assembly is movably arranged in the die cavity copper head, the punch assembly comprises an upper die identification block arranged in the die cavity copper head, the lower die is provided with a lower die identification block, the lower die identification block is provided with a protruding structure protruding from the lower die identification block, the protruding structure corresponds to the upper die identification block, and a sheet material between the upper die and the lower die is formed into the cover body with the identification through blistering of the die cavity copper head and punching between the lower die identification block and the protruding structure. Through the above mode, the blister punch forming die with the cover body with the identification has the following advantages: the structure of the thermoforming die is adjusted, different sizes of cover body identifications are formed through punching and blistering while the cup cover is formed through blistering, the identification is clear, and the forming effect is good.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of forming molds, in particular to a blister punch forming mold with a cover body having an identification. BACKGROUND

[0002] With the convenience of people's going out for consumption, coffee shops, milk tea shops, juice shops and various beverage shops are springing up. These commercial shops mainly provide various instant beverages, including hot and cold drinks, and in order to facilitate packing and carrying, disposable plastic cups or paper cups are usually provided to hold the beverages, and the cup mouth is covered with a cover.

[0003] For different types of beverages, different covers may be needed to meet different needs. For example, for milk tea cups, the cup cover needs to be provided with interfaces of different sizes and shapes, or for different brands of cups, the cup cover needs to be provided with different identification patterns or patterns, etc., and these interfaces or identifications are mainly arranged in the central area of the cup cover, that is, the circumferential structure of the cup cover of various types is consistent, but the central area is different. The font of the existing cup cover on the market is not clear after being processed by the thermoforming mold, and only the font can be enlarged to meet the customer's demand. It cannot meet the requirement of clear font after ultra-small identification forming.

[0004] The existing cup cover is generally formed by blister thermoforming. As disclosed in the cover forming mold and quick change structure of CN202110320980.3, the conventional thermoforming mold is vacuumed by the upper mold and is vacuumed by the lower mold, and the exhaust holes on the mold suck the sheet onto the mold to form in place. Therefore, when designing, the customer needs to design the identification font gap according to 2 times the thickness of the sheet after stretching. In order to ensure that the font is formed clearly. The thickness of the sheet of the general bowl cover is between 0.5mm-0.8mm, so the stroke gap of the font needs to leave a distance of at least 0.8mm to make the sheet wrap around the font to form. The exhaust hole on the mold font is 0.5mm in diameter, the position of the exhaust hole is kept before the font stroke, and the exhaust hole is uniformly distributed and cannot be too large or too small. If the exhaust hole is too large, the sheet will be sucked on the exhaust hole due to softening, and the product surface will be prickly. If the exhaust hole is too small, it will cause poor exhaust, blockage and other problems, and the forming will be poor. The exhaust hole needs to be punched to communicate with the gas collection groove on the mold, and the sheet is softened after heating. The mold is vacuumed, and the sheet is wrapped around the mold font to form. When the sheet is heated and softened, it is sucked between the font strokes. Due to the limitations of the blister process, there must be enough gap between the font strokes to form clearly. Otherwise, the font formation will be blurred. When the font size is 6.5mm, the font formation is also a little blurred, and when the font size is smaller, the formed font is very blurred and has no recognition degree.

[0005] Clear markings are usually achieved by changing the equipment's process parameters. For example, increasing the temperature will make the product molding clearer. However, this can lead to issues such as the sheet adhering to the mold, causing sharp edges at the vent holes, and unstable production. Summary of the Invention

[0006] The main technical problem solved by this invention is to provide a thermoforming die for a lid with markings. By adjusting the structure of the thermoforming die, different sizes of lid markings are formed simultaneously with the thermoforming of the cup lid through stamping and thermoforming. The markings are clear and the forming effect is good.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: providing a vacuum forming mold for a cover with an identification, including an upper mold and a lower mold, with multiple forming mold units between the upper mold and the lower mold, each forming mold unit including an outer peripheral mold, a mold cavity copper head provided in the outer peripheral mold, a stamping assembly movably provided in the mold cavity copper head, the stamping assembly including an upper mold identification block located in the mold cavity copper head, a lower mold identification block provided in the lower mold, the lower mold identification block having a protruding structure protruding from the lower mold identification block, the protruding structure corresponding to the upper mold identification block, the sheet material between the upper mold and the lower mold being vacuum formed by the mold cavity copper head and the stamping between the lower mold identification block and the protruding structure to form a cover with an identification.

[0008] In a preferred embodiment of the present invention, the stamping assembly further includes an ejector pin movably disposed within the outer peripheral die, an elastic element connecting the ejector pin and the outer peripheral die, and the lower end of the ejector pin being fixedly connected to the upper die marking block.

[0009] In a preferred embodiment of the present invention, the mold cavity copper head has a limiting cavity, the ejector pin is movably disposed in the limiting cavity, and the upper end of the ejector pin extends out of the limiting cavity and connects with the upper mold marking block.

[0010] In a preferred embodiment of the present invention, the upper end of the copper head of the mold cavity is provided with an installation groove, and the upper mold marking block is located in the installation groove.

[0011] In a preferred embodiment of the present invention, the upper mold and the lower mold closing push the upper mold marking block upward, so that the copper head of the mold cavity abuts against the upper mold marking block, thereby causing the protruding structure to press the upper mold marking block.

[0012] In a preferred embodiment of the present invention, the upper mold and the lower mold are separated, and the upper mold marking block is reset by the restoring force of the spring, so that the upper mold marking block is exposed in the copper head of the mold cavity.

[0013] In a preferred embodiment of the present invention, a groove is provided on the lower mold, and the lower mold marking block is installed in the groove.

[0014] In a preferred embodiment of the present application, the identification surface A of the mold cavity copper head is arranged downward, the identification surface B of the convex structure is arranged upward, and the identification surface B is below the identification surface A.

[0015] In a preferred embodiment of the present application, the upper die and the lower die are closed to stamp the identification B on the sheet material by the identification surface B and to vacuum form the identification A on the sheet material by the identification surface A, and the upper surface of the upper die identification block is flush with the identification surface B.

[0016] In a preferred embodiment of the present application, a plurality of upper air grooves are arranged in the upper die, the upper air grooves are communicated with the central hole on the outer peripheral die, the air passage in the molding die unit is discharged from the upper air grooves through the central hole, a plurality of lower air grooves are arranged in the lower die, and the lower air grooves form a negative pressure with the molding die unit to press the sheet material.

[0017] The present application has the following beneficial effects: the vacuum forming and stamping molding die of the cover body with identification of the present application can stamp a small identification on the sheet material by the stamping assembly and the convex structure and form a larger identification on the sheet material by the mold cavity copper head when the sheet material is vacuum formed into a cup cover, and different identifications are formed separately.

[0018] The vacuum forming and stamping molding die of the cover body with identification of the present application can stamp a small identification on the sheet material by the stamping assembly composed of the ejector pin, the elastic member and the upper die identification block, and the stamping molding can ensure that the small identification is clear and has high recognition.

[0019] The vacuum forming and stamping molding die of the cover body with identification of the present application can stamp and vacuum form the front and back surfaces of the sheet material by the identification surface B and the identification surface A located in the same plane when the mold is closed, and the stamping and vacuum forming are combined to realize the molding and identification molding of the sheet material. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0021] Figure 1 is a perspective structural schematic view of a preferred embodiment of the vacuum forming and stamping molding die of the cover body with identification of the present application;

[0022] Figure 2 is Figure 1 a sectional view of the preferred embodiment of the vacuum forming and stamping molding die of the cover body with identification of the present application;

[0023] Figure 3 is a schematic view of a three-dimensional structure of a forming die unit;

[0024] Figure 4 is a sectional view of Figure 3 ;

[0025] Figure 5 is a schematic view of a structure of a lower die;

[0026] Figure 6 is a contrastive schematic view of identification surface A and identification surface B;

[0027] The labels of the components in the drawings are as follows: 1, upper die, 2, lower die, 3, forming die unit, 31, outer peripheral die, 32, die cavity copper head, 33, stamping assembly, 331, upper die identification block, 332, ejector pin, 333, elastic member, 34, lower die identification block, 341, protruding structure, 35, mounting groove, 36, limiting cavity, 37, groove body, identification surface A, identification surface B. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be described clearly and completely below. The structures, proportions, sizes, etc. shown in the drawings of the present specification are merely used to cooperate with the content disclosed in the present specification, to enable those skilled in the art to understand and read, and are not used to limit the defined conditions under which the present application can be implemented, so they do not have substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects that can be produced by the present application and the purposes that can be achieved, should still fall within the scope of the technical content disclosed by the present application. At the same time, the terms such as "upper", "lower", "left", "right", "middle" etc. cited in the present specification are merely for the convenience of clear understanding of the description, and are not used to limit the implementable scope, the change or adjustment of the relative relationship, without substantially changing the technical content, is also considered as the implementable scope of the present application.

[0029] Please refer to Figures 1 to 4 , a blister stamping forming die with an identification cover, comprising an upper die 1 and a lower die 2, a plurality of forming die units 3 are arranged between the upper die 1 and the lower die 2. The forming die units 3 are arranged in an array on the upper die 1, and the structures of the upper die 1 and the lower die 2 are corresponding, so that a plurality of cup covers can be formed at one time. A sheet is arranged between the upper die 1 and the lower die 2. In the forming process, the thermoplastic plastic sheet is heated to a softened state, and under the action of external force of the upper die 1 and the lower die 2, it is tightly attached to the forming surface of the forming die unit 3, so as to obtain a shape similar to the surface of the forming die unit 3. After cooling and setting, the cover with a predetermined shape is obtained after modification

[0030] The upper die 1 is provided with a plurality of upper air grooves, the upper air grooves are communicated with the central hole on the outer peripheral die 31, the air path channel in the forming die unit 3 is discharged from the upper air grooves through the central hole, and the lower die 2 is provided with a plurality of lower air grooves. The lower air grooves form a negative pressure with the forming die unit 3 to press the sheet. The structure of the upper die 1 and the lower die 2 is a conventional structure in the art. Other structures of the present application can be referred to the disclosed structures in CN202110320980.3 Cover forming die and quick change structure. The forming die unit 3 is provided with a plurality of air path channels, which realize exhaust during mold suction. The structure of the air path channel is a conventional setting in the art or can be referred to the air path channel structure of the forming die disclosed in CN202110320980.3 Cover forming die and quick change structure.

[0031] The forming die unit 3 comprises an outer peripheral die 31, the outer peripheral die 31 is provided with a die cavity copper head 32, the die cavity copper head 32 is movably provided with a stamping assembly 33, the stamping assembly 33 comprises an upper die identification block 331 located in the die cavity copper head 32, and the lower die 2 is provided with a lower die identification block 34. The lower die identification block 34 has a protruding structure 341 protruding from the lower die identification block 34, the protruding structure 341 corresponds to the upper die identification block 331, and the sheet between the upper die 1 and the lower die 2 is sucked by the die cavity copper head 32 and is stamped between the lower die identification block 34 and the protruding structure 341 to form a cover body with identification. Other structures of the outer peripheral die 31 can be referred to the similar structures disclosed in CN202110320980.3 Cover forming die and quick change structure.

[0032] The stamping assembly 33 further comprises a ejector pin 332 movably arranged in the outer peripheral die 31, and the ejector pin 332 and the outer peripheral die 31 are connected with an elastic member 333. The elastic member 333 is a spring or other similar elastic reset component. The lower end of the ejector pin 332 is fixedly connected with the upper die identification block 331. The die cavity copper head 32 is provided with a limiting cavity 36, and the ejector pin 332 is movably arranged in the limiting cavity 36. The upper end of the ejector pin 332 extends out of the limiting cavity 36 and is connected with the upper die identification block 331. The upper end of the die cavity copper head 32 is provided with a mounting groove 35, and the upper die identification block 331 is located in the mounting groove 35. The lower die 2 is provided with a groove body 37, and the lower die identification block 34 is arranged in the groove body 37. The ejector pin 332 is limited between the die cavity copper head 32 and the outer peripheral die 31. The limiting cavity 36 provides the vertical movement position of the ejector pin 332. The spring is pressed on the outer peripheral die 31 by the ejector pin 332. The upper end of the ejector pin 332 is fixedly connected with the upper die identification block 331 through threads. When the upper die 1 and the lower die 2 are separated, the ejector pin 332 moves downward to the limit position due to the reaction force of the spring and the gravity. At this time, the lower surface of the upper die identification block 331 just exposes from the die cavity copper head 32 (is flush with the identification surface A), which is the initial state.

[0033] The upper die 1 and the lower die 2 are closed to push the upper die mark block 331 upwards, so that the mold cavity copper head 32 is pressed against the upper die mark block 331, thereby pressing the protruding structure 341 against the upper die mark block 331. Before forming, the sheet is on the mold cavity copper head 32, when the upper die 1 and the lower die 2 are closed, the protruding structure 341 on the lower die mark block 34 is close to the upper die mark block 331, after the two are in contact, due to the effect of the protruding structure 341, the upper die mark block 331 is pushed upwards, and the ejector pin is also raised to the limit position. At this time, the mold is closed, and the protruding structure 341 and the upper die mark block 331 are completely pressed against the sheet.

[0034] The identification surface A of the mold cavity copper head 32 is arranged downward, the identification surface B of the protruding structure 341 is arranged upward, and the identification surface B is below the identification surface A. The upper die 1 and the lower die 2 are closed to stamp the identification surface B on the sheet to form the identification B, the identification surface A is vacuum formed on the sheet to form the identification A, and the upper surface of the upper die mark block 331 is flush with the identification surface B. When the cover is formed, since the sheet is adsorbed on the mold cavity copper head 32, the identification surface A is vacuum formed on the sheet to form the identification A. Since the protruding structure 341 is pressed against the sheet with the upper die mark block 331, the identification surface B is stamped on the surface of the sheet to form the identification B. During the forming of the cover, different identifications are formed on the cover by vacuum forming and stamping. The identification A and the identification B can be patterns or characters. Due to the limitation of the vacuum forming process, the identification A is a large-size pattern or character, which generally has good clarity and recognition degree when the size is greater than 6.5 mm. Compared with the identification B, since the identification B is formed by stamping, the identification on the identification surface B can be smaller, and even when the size is about 3 mm, it also has very good clarity. Therefore, by increasing the stamping assembly 33 on the mold cavity copper head 32, the smaller identification B is formed during the forming of the cover, so that the small-size identification also has very good clarity.

[0035] As shown in Figure 6 The font and pattern in the identification surface A and the identification surface B are only for illustrative purposes, and other fonts and patterns can also be used. Through comparison in the drawings, the font and pattern of the identification surface B are obviously smaller than the font and pattern of the identification surface A.

[0036] Compared with the prior art, the vacuum forming and stamping mold of the cover with identification has the advantages that by adjusting the structure of the thermoforming mold, different sizes of cover identifications are formed by stamping and vacuum forming during the vacuum forming of the cup cover, the identification is clear, and the forming effect is good.

[0037] The above describes the present application and its embodiments in a schematic manner, and the description is not restrictive, and the embodiments shown in the drawings are only one of the embodiments of the present application, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by the above, without departing from the spirit of the present application, similar structural modes and embodiments can be designed without creativity, and all of them shall belong to the protection scope of the present application.

Claims

1. A thermoforming mold for a cover with an identifier, comprising an upper mold and a lower mold, wherein a plurality of forming mold units are provided between the upper mold and the lower mold, and each forming mold unit includes an outer peripheral mold, characterized in that, The outer peripheral mold is provided with a mold cavity copper head, and a stamping assembly is movably disposed within the mold cavity copper head. The stamping assembly includes an upper mold marking block located within the mold cavity copper head and an ejector pin movably disposed within the outer peripheral mold. An elastic element is connected between the ejector pin and the outer peripheral mold. The lower mold is provided with a lower mold marking block, and the lower mold marking block has a protruding structure that corresponds to the upper mold marking block. The sheet material between the upper mold and the lower mold is vacuum-formed by the mold cavity copper head and stamped between the lower mold marking block and the protruding structure to form a cover with markings. The marking surface A of the copper head of the mold cavity is set downwards, and the marking surface B of the protruding structure is set upwards. The marking surface B is located below the marking surface A. The upper and lower molds are joined together so that the marking surface B is stamped on the sheet to form marking B, and the marking surface A is vacuum-formed on the sheet to form marking A, and the upper surface of the upper mold marking block is flush with the marking surface B.

2. The vacuum forming mold for the cover with markings according to claim 1, characterized in that, The mold cavity copper head has a limiting cavity, and the ejector pin is movably disposed in the limiting cavity. The upper end of the ejector pin extends out of the limiting cavity and is connected to the upper mold marking block.

3. The vacuum forming mold for the cover with markings according to claim 1, characterized in that, The upper end of the copper head of the mold cavity is provided with an installation groove, and the upper mold marking block is located in the installation groove.

4. The vacuum forming mold for the cover with markings according to claim 1, characterized in that, The upper and lower molds closing together push the upper mold marking block upwards, causing the copper head of the mold cavity to press against the upper mold marking block, thereby pressing the protruding structure against the upper mold marking block.

5. The vacuum forming mold for the cover with markings according to claim 1, characterized in that, The upper and lower molds are separated, and the spring's restoring force pushes the ejector pin to reset the upper mold marking block, causing the upper mold marking block to be exposed in the mold cavity copper head.

6. The vacuum forming mold for the cover with markings according to claim 1, characterized in that, The lower mold has a groove, and the lower mold marking block is installed in the groove.

7. The vacuum forming mold for the cover with markings according to claim 1, characterized in that, The upper mold is provided with multiple upper air grooves, which are connected to the central hole on the outer peripheral mold. The air passage in the forming mold unit is discharged from the upper air grooves through the central hole. The lower mold is provided with multiple lower air grooves, which form a negative pressure with the forming mold unit to press the sheet material.

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