Airbag pressurized fixed multi-point self-forming blister upper mold manufacturing device and its use method

Abstract

The present invention provides an airbag pressurized fixed multi-point self-forming blister upper mold manufacturing device and a method for using the same. The device comprises a shaping portion (100) located at the upper portion and a buffer portion (200) located at the lower portion. The shaping portion (100) comprises a positioning frame (101) and a plurality of shaping rods (105). The positioning frame (101) comprises a lower positioning screen (102) located at the bottom, an airbag layer (104) located in the middle, and a cavity (110) located at the top. The buffer portion (200) comprises a Velcro hook surface layer (201), a shaping layer (202), and a traceless cloth layer (203) from top to bottom. The lower end of the shaping rod (105) is provided with a pasting device (400). The device can produce a shape close to that of any lower mold, and the resulting blister product is highly consistent with the lower mold and has a smooth surface. The upper mold component is firm and not easy to fall off.

Description

Technical Field

[0001] The invention relates to an airbag pressurized fixed multi-point self-forming blister upper mold manufacturing device and a use method thereof, belonging to the manufacturing field of blister processing in the plastic packaging industry. Background Art

[0002] The main principle of the blister processing technology is: the rolled sheet is pulled into the electric furnace oven and heated to a softened state, and then pulled over the blister mold while it is still hot. The mold is moved up and vacuumed to adsorb the softened sheet to the mold surface. At the same time, cooling water is sprayed in a mist form on the surface of the formed sheet to harden it. The formed sheet is then automatically pulled to the storage box, and the pneumatic cutter separates the formed and unformed sheets, thus completing the entire process.

[0003] Disadvantages of existing processing technology:

[0004] 1. The blister is not in place, the shape is deformed, and the product is not blistered into the same shape as the mold;

[0005] 2. Excessive blistering makes the product too thin;

[0006] 3. Unnecessary line marks appear on the molded product;

[0007] 4. The product thickness is uneven.

[0008] To solve the above problems, the mold needs to be debugged in place, including: the time for sheet advancement, the temperature and time of heating, the intensity and time of vacuuming, the position, time and depth of the upper mold falling, the placement of the mold in the layout, and whether accessories are added between the molds.

[0009] The degree of fit between the upper and lower molds directly determines the product quality. In production, one upper mold is usually used in conjunction with one lower mold. Currently, in the blister packaging industry, in order to save time and money on mold opening, upper molds are usually made by hand using materials such as wood and plaster. Each upper mold requires several days of manual processing by professional and technical workers, and a large amount of space is required to store different upper molds. Therefore, there is a significant waste of work efficiency, capital, and space. Furthermore, after the upper mold is handmade by professional and technical workers, it is necessary to glue traditional blister cloth onto the upper mold with glue. This is not only difficult to manufacture and the process is complicated, but it is also difficult to ensure fit with the lower mold and the stability of the shaping effect. This can lead to problems such as unwanted line marks on the molded product or uneven thickness of the product.

[0010] The invention patent for "Airbag Pressurized Fixed Multi-Point Self-Forming Blister Upper Die" with patent number ZL201820933397.3 discloses an airbag pressurized fixed multi-point self-forming blister upper die manufacturing device to address the shortcomings of the traditional upper and lower dies, as well as the low efficiency of each upper die manufacturing and replacement. The device utilizes airbag pressure to fix the mold, allowing the multi-point lifting shaping rod to form a shape close to any lower die and a flat surface that fits snugly with the lower die. However, the buffer portion in this patent utilizes magnetic force to attract the shaping rod, and the buffer portion is thick and heavy, so the shape is sometimes not very precise and occasionally falls off due to loss of magnetic force or insufficient magnetic force. Summary of the Invention

[0011] The objects of the present invention are:

[0012] To address the shortcomings of conventional upper and lower molds, which often suffer from poor fit and inefficient upper mold manufacturing and replacement, a device and method for manufacturing a multi-point self-forming upper mold with airbag pressurization and fixation is provided. This device can produce shapes similar to those of any lower mold, resulting in a highly consistent and smooth surface for the resulting blister product. The upper mold components are also secure and resist falling off.

[0013] The purpose of the present invention can be achieved through the following technical solutions:

[0014] A device for manufacturing an airbag pressurized fixed multi-point self-forming blister upper mold includes a molding part located at the upper part and a buffer part located at the lower part. The molding part includes a positioning frame and several molding rods. The positioning frame includes a lower positioning screen located at its bottom, an airbag layer located in the middle and a cavity located at its top. The lower positioning screen is provided with several positioning screen holes arranged in a dot matrix. The several positioning screen holes arranged in a dot matrix here can be evenly distributed in multiple rows with equal spacing, or can be distributed in multiple rows with regular but unequal spacing, for example: two rows are grouped together, the two rows of positioning screen holes in each group maintain a fixed spacing, the spacing is relatively close and they are staggered, and then the spacing between groups is slightly larger, and the groups are arranged with equal spacing.

[0015] The shaping rod is matched with the positioning screen hole and inserted into each positioning screen hole. The lower part of the shaping rod extends out of the positioning frame. The height of the shaping rod is higher than the airbag layer. A limit block is provided on the top of the shaping rod. The airbag layer is provided with several branch airbags, which are inserted in the gaps between the shaping rods. The buffer part is provided at the lower end of the shaping rod. The buffer part includes a Velcro hook surface layer, a shaping layer, and a traceless cloth layer from top to bottom. The shaping rod is a stainless steel tube. The lower end of the shaping rod is provided with a pasting device. The pasting device includes a rivet nailed into the lower end of the shaping rod from bottom to top, and a rubber sleeve covered on the outside of the rivet cap. The lower end surface of the rubber sleeve is fixed with a Velcro fleece surface layer that matches its shape.

[0016] The positioning frame further includes an upper positioning screen, which is arranged above the airbag layer and below the cavity. The upper positioning screen is provided with several positioning screen holes arranged in a dot matrix, and the number and position of the positioning screen holes correspond to the positioning screen holes on the lower positioning screen. The upper part of the shaping rod is inserted into the positioning screen holes of the upper positioning screen, and the height of the shaping rod is higher than the upper positioning screen.

[0017] The number of the positioning sieve holes and the number of the shaping rods are 8000-15000 respectively.

[0018] The airbag layer is an inflatable airbag, which is connected to the air inlet and outlet pipes. The air inlet and outlet pipes are also provided with a pressure gauge, an air pressure pump, a power supply, a voltage stabilizing switch, and a pressure reducing switch.

[0019] The branch airbag is a mesh airbag, or a plurality of parallel airbag strips.

[0020] The airbag layer and the branch airbag are connected in parallel.

[0021] A method for using an airbag pressurized fixed multi-point self-forming blister upper mold manufacturing device:

[0022] Step 1: Prepare other equipment and materials required for blister production, including the blister machine, lower mold, and blister sheet, and preset the distance between the upper and lower molds;

[0023] Step 2: The airbag layer is in a decompressed state, and the shaping rods are in a state where they can move freely up and down. The shaping rods are dropped into the lower mold. At this time, the shaping rods form a shape corresponding to the lower mold. Then, the airbag layer is inflated to fix the upper and lower positions of the shaping rods.

[0024] Step 3: The blister machine preheats the blister sheet, pulls the preheated and softened rolled blister sheet over the lower mold while it is hot, and the lower mold moves up while the shaping rod descends, so that the distance between the upper and lower molds reaches the preset value described in step 1. At this time, the blister machine vacuums under the lower mold to extract the air in the gap between the blister sheet and the lower mold, and adsorbs the softened blister sheet to the surface of the lower mold. Then, cooling water is sprayed in a mist form on the surface of the formed blister sheet to harden it. The formed blister sheet is automatically pulled to the storage box by the blister machine, and the pneumatic cutter separates the formed and unformed blister sheets. The formed blister sheet obtained at this time becomes the modeling layer;

[0025] Step 4: Fix the buffer part, i.e. the Velcro hook surface layer, the shaping layer, and the traceless fabric layer from top to bottom, and stick the Velcro fleece surface layer at the lower end of the sticking device to the Velcro hook surface layer at the upper end of the buffer part;

[0026] Step 5: The blister machine pulls the rolled sheet into the electric furnace oven and heats it to a softened state. While it is hot, it is pulled over the lower mold. The shaping rod and the buffer portion fixed under the shaping rod descend together. At the same time, the lower mold moves up so that the distance between the upper and lower molds reaches the preset value described in step 1. At this time, the blister machine vacuums the lower mold, extracts the air in the gap between the blister sheet and the lower mold, and adsorbs the softened blister sheet to the surface of the lower mold. Then, cooling water is sprayed in a mist form on the surface of the formed blister sheet to harden it. The formed blister sheet is automatically pulled to the storage box by the blister machine, and the pneumatic cutter separates the formed and unformed blister sheets. The formed blister sheet obtained at this time is the finished product.

[0027] The beneficial effects of the present invention are:

[0028] 1. The multi-point lifting stainless steel tube, secured by airbag pressure, can be adjusted to any lower mold. This improves production efficiency, eliminates the need to replace the upper mold, and saves storage space. It can produce shapes similar to any lower mold, and the resulting blister product is highly consistent with the lower mold and has a smooth surface.

[0029] 2. The buffer layer in the technical solution of the present invention can be highly consistent with the shape of the lower mold and has moderate hardness and softness, solving the problem of uneven thickness of the product caused by excessive or inadequate vacuum forming.

[0030] 3. The stainless steel pipe and the upper mold buffer layer are firmly fixed and not easy to fall off.

[0031] 4. Simple structure, saving production costs, few working procedures, and easy to promote. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0033] Figure 2 It is a cross-sectional structural entity diagram of the shaping rod 105 of the present invention.

[0034] Figure 3 This is one of the partial structural diagrams of the present invention, and is a schematic diagram of the cross-sectional structure of the lower positioning screen 102 in a certain embodiment. The structure of the upper positioning screen 108 is the same as that of the lower positioning screen 102.

[0035] Figure 4 This is a schematic diagram of the local structure of an embodiment of the present invention, and is a vertical cross-sectional diagram of the positioning frame 101. In this embodiment, the positioning frame 101 includes a lower positioning screen 102 located at its bottom, an airbag layer 104 located in the middle, and a cavity 110 located at its top.

[0036] Figure 5It is a schematic diagram of the local structure of a certain embodiment of the present invention, and is a vertical cross-sectional diagram of the positioning frame 101. In this embodiment, the positioning frame 101 includes a lower positioning screen 102 at its bottom, an airbag layer 104 at its middle, an upper positioning screen 108 at its upper part, and a cavity 110 at its top.

[0037] Figure 6 1 is a schematic diagram of a partial structure of an embodiment of the present invention, and is a schematic diagram of a cross section of the positioning frame 101. In this embodiment, the branch airbags 107 are several parallel airbag strips.

[0038] Figure 7 1 is a schematic diagram of a partial structure of an embodiment of the present invention, and is a schematic diagram of a cross section of the positioning frame 101. In this embodiment, the branch airbag 107 is a mesh airbag.

[0039] Figure 8 This is one of the partial structural diagrams of the present invention, which is a schematic diagram of the connection relationship between the inlet and outlet air pipes 109 and the pressure gauge, air pressure pump, power supply, voltage regulator switch, and pressure reducing switch.

[0040] Figure 9 This is one of the partial structural diagrams of the present invention, and is a schematic diagram of the cross-sectional structure of the lower positioning screen 102 in a certain embodiment. The structure of the upper positioning screen 108 is the same as that of the lower positioning screen 102.

[0041] Figure 10 The schematic diagram of the usage state includes a schematic diagram of the overall structure of the present invention and a schematic diagram of the lower mold.

[0042] in:

[0043] 100, shaping part; 101, positioning frame; 102, lower positioning screen; 103, positioning screen hole; 104, airbag layer; 105, shaping rod; 106, limit block; 107, branch airbag; 108, upper positioning screen; 109, inlet and outlet pipes; 110, cavity;

[0044] 200, buffer part; 201, Velcro hook surface layer; 202, shaping layer; 203, seamless fabric layer;

[0045] 300, lower die;

[0046] 400, adhesive device; 401, rivet; 402, rubber sleeve; 403, Velcro fleece layer. DETAILED DESCRIPTION

[0047] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0048] like Figure 1As shown, a device for manufacturing an airbag pressurized, fixed, multi-point self-forming blister upper mold comprises a molding section 100 located at the top, a buffer section 200 located at the bottom, and a lower mold 300. The lower mold 300 is manufactured according to conventional methods and preset with the shape of the blister product to be produced. The molding section 100 comprises a positioning frame 101 and several molding rods 105. The positioning frame 101 includes a lower positioning screen 102 located at its bottom, an airbag layer 104 located in its middle, and a cavity 110 located at its top. The buffer section 200 comprises, from top to bottom, a Velcro hook surface layer 201, a shaping layer 202, and a traceless fabric layer 203. The lower end surface of the rubber sleeve 402 is fixed with a Velcro fleece surface layer 403 that matches its shape. The Velcro described herein can be purchased directly and comes with its own adhesive backing, saving production costs and time.

[0049] like Figure 2 The figure shows a cross-sectional view of the shaping rod 105 of the present invention. The shaping rod 105 is a stainless steel tube. An attachment device 400 is provided at the lower end of the shaping rod 105. The attachment device 400 comprises a rivet 401 driven upward from the bottom of the shaping rod 105, and a rubber sleeve 402 covering the rivet cap. A Velcro loop layer 403, matching its shape, is fixed to the lower end of the rubber sleeve 402. The rivet 401 is made of stainless steel.

[0050] like Figure 3 As shown, the lower positioning screen 102 is provided with a plurality of positioning screen holes 103 arranged evenly in a dot matrix. The plurality of positioning screen holes arranged in a dot matrix can be evenly distributed in multiple rows with equal spacing, or can be regularly distributed in multiple rows with unequal spacing, for example: Figure 9 As shown, in a preferred embodiment of the present invention, two rows form a group, and the two rows of positioning screen holes in each group maintain a fixed spacing, are closely spaced, and are staggered. The spacing between groups is slightly larger, and the groups are evenly spaced. The shaping rods 105 match the positioning screen holes 103 and are inserted into each positioning screen hole 103. The shaping rods 105 can move up and down. The lower portion of the shaping rods 105 extends out of the positioning frame 101. The height of the shaping rods 105 is higher than the airbag layer 104. The top of the shaping rods 105 is provided with a stopper 106 to prevent the shaping rods 105 from falling downward. The airbag layer 104 is provided with several branch airbags 107, which are inserted into the gaps between the shaping rods 105. The buffer portion 200 is laid on the lower end of the shaping rods 105.

[0051] like Figure 4 As shown, in a certain embodiment of the present invention, the upper positioning screen 108 is not provided.

[0052] like Figure 5As shown, in one embodiment of the present invention, the positioning frame 101 may further include an upper positioning screen 108, which is arranged above the airbag layer 104 and below the cavity 110. The upper positioning screen 102 is provided with a plurality of positioning screen holes 103 arranged in a lattice pattern, and the number and position of the positioning screen holes 103 correspond to the positioning screen holes 103 on the lower positioning screen 102. The upper portion of the shaping rod 105 is inserted into the positioning screen holes 103 of the upper positioning screen 108, and the height of the shaping rod 105 is higher than the upper positioning screen 108. The provision of the upper positioning screen 108 can make the up and down movement trajectory of the shaping rod 105 and the positioning effect of the airbag more stable.

[0053] The number of the positioning sieve holes 103 and the number of the shaping rods 105 are 8000-15000, preferably 10000-12000.

[0054] The airbag layer 104 is an inflatable airbag, and the airbag layer 104 is connected to the air inlet and outlet pipes 109. Figure 8 As shown, the air inlet and outlet pipes 109 are also equipped with a pressure gauge, an air pressure pump, a power supply, a voltage regulator switch, and a pressure reducing switch. The pressure gauge can monitor the pressure of the airbag layer 104 in real time. One end of the air inlet and outlet pipes 109 is connected to the voltage regulator switch and the air pressure pump to form a loop. The air pressure pump can inflate the airbag layer 104. When the voltage regulator switch is open, the air pressure pump is driven to inflate, and when the voltage regulator switch is closed, the air pressure pump stops inflation. When the air pressure falls below the set value (preset according to actual working conditions), the voltage regulator switch opens; otherwise, it closes. One end of the air inlet and outlet pipes 109 is connected to the pressure reducing switch. When the pressure reducing switch is open, the airbag layer 104 is deflated.

[0055] like Figure 7 As shown, in one embodiment of the present invention, the branch airbag 107 can be a mesh airbag; or Figure 6 As shown, in a certain embodiment of the present invention, the branch airbag 107 is a plurality of parallel airbag strips. The mesh airbags or parallel airbags described herein can be evenly distributed with equal spacing, or can be distributed with regular but unequal spacing. The arrangement of the airbags is flexibly arranged according to the actual distribution of the positioning sieve holes 103 and the shaping rods 105. The airbag layer 104 is connected in parallel with the branch airbags 107. In actual production, the shaping rod 105 area that is in contact with the lower mold 300 (hereinafter referred to as the effective area) is usually located in the middle area of ​​the positioning frame 101. Therefore, the laying of the branch airbags 107 is mainly to ensure that the shaping rods 105 in the effective area are fixed.

[0056] The method for using the airbag pressurized fixed multi-point self-forming blister upper mold manufacturing device of the present invention is as follows:

[0057] Step 1: Prepare other equipment and materials needed for blister operation, including blister machine, lower mold 300 and blister sheet, and preset the distance between the upper and lower molds. These equipment and materials are common supplies for blister operation. Figure 10 The figure shows a schematic diagram of the usage state, including a schematic diagram of the overall structure of the present invention and a schematic diagram of the lower mold.

[0058] Step 2: The airbag layer 104 is in a decompressed state, and the shaping rods 105 are in a state where they can move freely up and down. The shaping rods 105 are dropped into the lower mold 300. At this time, the shaping rods 105 form a shape corresponding to the lower mold 300. Then, the airbag layer 104 is inflated so that the upper and lower positions of each shaping rod 105 are fixed.

[0059] Step 3: The blister machine preheats the blister sheet, pulls the preheated and softened rolled blister sheet over the lower die 300 while it is hot, and the lower die 300 moves up while the shaping rod 105 descends, so that the spacing between the upper and lower dies reaches the preset value described in step 1. At this time, the blister machine vacuums the lower die 300, extracts the air in the gap between the blister sheet and the lower die 300, and adsorbs the softened blister sheet to the surface of the lower die 300. Then, cooling water is sprayed in a mist form on the surface of the formed blister sheet to harden it. The formed blister sheet is automatically pulled to the storage box by the blister machine, and the pneumatic cutter separates the formed and unformed blister sheets. The formed blister sheet obtained at this time becomes the modeling layer 202. At this time, the sheet, i.e., the upper surface of the modeling layer 202, has pits caused by the downward pressure of the upper shaping rod 105, and cannot be directly used as a finished product, but as an intermediate product for shaping.

[0060] Step 4: Fix the buffer part 200, i.e. the Velcro hook surface layer 201, the shaping layer 202, and the seamless fabric layer 203 from top to bottom, and stick the Velcro fleece surface layer 403 at the lower end of the sticking device 400 to the Velcro hook surface layer 201 at the upper end of the buffer part 200;

[0061] Step five: The blister machine pulls the rolled sheet into the electric furnace oven and heats it to a softened state. While it is hot, it is pulled above the lower mold 300. The shaping rod 105 and the buffer portion 200 fixed below the shaping rod 105 descend together. At the same time, the lower mold 300 moves up so that the spacing between the upper and lower molds reaches the preset value described in step one. At this time, the blister machine vacuums the lower mold 300, extracts the air in the gap between the blister sheet and the lower mold 300, and adsorbs the softened blister sheet to the surface of the lower mold 300. Then, cooling water is sprayed in a mist form on the surface of the formed blister sheet to harden it. The formed blister sheet is automatically pulled to the storage box by the blister machine, and the pneumatic cutter separates the formed and unformed blister sheets. The surface of the formed blister sheet obtained at this time is smooth and has no pits, and is a finished product.

[0062] Since the buffer part 200 is made of lightweight materials, it is firmly adhered and fixed. According to tests, this technical solution can withstand the strong pressure generated during the stamping of the blister operation.

[0063] While the present invention has been described and illustrated herein by reference to a particular configuration or configurations, it is not intended to be limited to such details, since various modifications and structural changes are possible within the scope of the claims without departing from the spirit of the invention.

[0064] Parts of the present invention are the same as those in the prior art or can be implemented by using the prior art.

Claims

1. A device for manufacturing an airbag pressurized fixed multi-point self-forming blister upper mold, comprising a shaping portion (100) located at an upper portion and a buffer portion (200) located at a lower portion, wherein the shaping portion (100) comprises a positioning frame (101) and a plurality of shaping rods (105), wherein the positioning frame (101) comprises a lower positioning screen (102) located at its bottom, an airbag layer (104) located in its middle, and a cavity (110) located at its top, wherein a plurality of positioning screen holes (103) arranged in a dot matrix are provided on the lower positioning screen (102), and the positioning screen (102) comprises a plurality of positioning screen holes (103) arranged in a dot matrix. The shaping rod (105) matches the positioning sieve hole (103) and is inserted into each positioning sieve hole (103). The lower part of the shaping rod (105) extends out of the positioning frame (101). The height of the shaping rod (105) is higher than the airbag layer (104). A limit block (106) is provided on the top of the shaping rod (105); the airbag layer (104) is provided with a plurality of branch airbags (107), and the branch airbags (107) are inserted into the gaps between the shaping rods (105); the buffer portion (200) is provided at the lower end of the shaping rod (105), and is characterized in that, The buffer portion (200) comprises, from top to bottom, a Velcro hook surface layer (201), a shaping layer (202), and a traceless cloth layer (203); the shaping rod (105) is a stainless steel tube; the lower end of the shaping rod (105) is provided with a pasting device (400); the pasting device (400) comprises a rivet (401) nailed into the lower end of the shaping rod (105) from bottom to top, and a rubber sleeve (402) covering the rivet cap; the lower end surface of the rubber sleeve (402) is fixed with a Velcro fleece surface layer (403) matching the shape thereof; the shaping layer (202) is a blister sheet formed corresponding to the shape of the lower mold.

2. The airbag pressurized fixed multi-point self-forming blister upper mold manufacturing device according to claim 1, characterized in that The positioning frame (101) further includes an upper positioning screen (108), which is arranged above the airbag layer (104) and below the cavity (110). The upper positioning screen (108) is provided with a plurality of positioning screen holes (103) arranged in a dot matrix, and the number and position of the positioning screen holes (103) correspond to the positioning screen holes (103) on the lower positioning screen (102). The upper part of the shaping rod (105) is inserted into the positioning screen holes (103) of the upper positioning screen (108), and the height of the shaping rod (105) is higher than the upper positioning screen (108).

3. The airbag pressurized fixed multi-point self-forming blister upper mold manufacturing device according to claim 1 or 2, characterized in that The number of the positioning sieve holes (103) and the number of the shaping rods (105) are 8,000-15,000 respectively.

4. The airbag pressurized fixed multi-point self-forming blister upper mold manufacturing device according to claim 1, characterized in that The airbag layer (104) is an inflatable airbag, and the airbag layer (104) is connected to the air inlet and outlet pipes (109). The air inlet and outlet pipes (109) are also provided with a pressure gauge, an air pressure pump, a power supply, a voltage stabilizing switch, and a pressure reducing switch.

5. The airbag pressurized fixed multi-point self-forming blister upper mold manufacturing device according to claim 1, characterized in that The branch airbag (107) is a mesh airbag, or a plurality of parallel airbag strips.

6. The airbag pressurized fixed multi-point self-forming blister upper mold manufacturing device according to claim 1, 4 or 5, characterized in that The airbag layer (104) and the branch airbag (107) are connected in parallel.

7. A method for using a device for manufacturing an airbag pressurized fixed multi-point self-forming blister upper mold, which is used for the device for manufacturing an airbag pressurized fixed multi-point self-forming blister upper mold according to any one of claims 1 to 6, characterized in that The following steps are involved: Step 1: Prepare other equipment and materials required for the blister operation, including a blister machine, a lower mold (300) and blister sheets, and preset the distance between the upper and lower molds; Step 2: The airbag layer (104) is in a decompressed state, and the shaping rods (105) are in a state where they can move freely up and down. The shaping rods (105) are dropped into the lower mold (300). At this time, the shaping rods (105) form a shape corresponding to the lower mold (300). Then, the airbag layer (104) is inflated so that the upper and lower positions of the shaping rods (105) are fixed. Step 3: The blister machine preheats the blister sheet, pulls the preheated and softened rolled blister sheet onto the top of the lower mold (300) while it is hot, and the shaping rod (105) descends while the lower mold (300) moves up, so that the distance between the upper and lower molds reaches the preset distance between the upper and lower molds described in step 1. At this time, the blister machine vacuums the bottom of the lower mold (300), extracts the air in the gap between the blister sheet and the lower mold (300), and absorbs the softened blister sheet onto the surface of the lower mold (300). Then, cooling water is sprayed in a mist form on the surface of the formed blister sheet to harden it. The formed blister sheet is then automatically pulled to the storage box by the blister machine, and the pneumatic cutter separates the formed and unformed blister sheets. The formed blister sheet obtained at this time becomes the shaping layer (202); Step 4: Fix the buffer part (200), i.e., the Velcro hook surface layer (201), the shaping layer (202), and the traceless cloth layer (203) from top to bottom, and stick the Velcro fur surface layer (403) at the lower end of the sticking device (400) to the Velcro hook surface layer (201) at the upper end of the buffer part (200); Step 5: The blister machine pulls the rolled sheet into the electric furnace oven and heats it to a softened state. While it is hot, it is pulled over the lower mold (300). The shaping rod (105) and the buffer portion (200) fixed below the shaping rod (105) are lowered together. At the same time, the lower mold (300) moves up so that the spacing between the upper and lower molds reaches the preset spacing between the upper and lower molds described in step 1. At this time, the blister machine vacuums the lower mold (300) to extract the air in the gap between the blister sheet and the lower mold (300), and adsorbs the softened blister sheet to the surface of the lower mold (300). Then, cooling water is sprayed in a mist form on the surface of the formed blister sheet to harden it. The formed blister sheet is automatically pulled to the storage box by the blister machine, and the pneumatic cutter separates the formed and unformed blister sheets. The formed blister sheet obtained at this time is a finished product.

Images