A demoulding device for a plastic suction mould, its usage method and a plastic suction mould

Abstract

The present invention relates to the technical field of plastic processing and molding, and specifically discloses a demolding device for a thermoforming mold, its usage method, and a thermoforming mold, including: an insert, arranged at the bottom of the upper template of the thermoforming mold; a plurality of inserts are arranged in parallel; the insert includes a U-shaped seat, and a plastic molding module is rotatably arranged on each of the two side walls of the U-shaped seat. The plastic molding module is connected to the bottom of the U-shaped seat through at least two adjusting components. The adjusting component includes two connecting plates. One end of the connecting plate is hinged to the top of the plastic molding module, and the other end is slidably connected to the bottom of the U-shaped seat. The two connecting plates form a "V" shape, and a spring is connected between the two connecting plates; an adjusting plate, arranged between the two connecting plates; a second telescopic member, the end of the telescopic end is hinged to the adjusting plate for adjusting the lifting of the adjusting plate; a push plate, used to apply a downward thrust to the plastic sheet during demolding. The present invention can be applied to the demolding of thermoforming molds with large-sized inserts.

Description

Technical Field

[0001] The present invention relates to the technical field of plastic processing and molding, and particularly relates to a demolding device for a thermoforming mold, its using method, and a thermoforming mold. Background Art

[0002] Thermoforming is a plastic processing technology. The main principle is to heat and soften a flat plastic sheet, then use vacuum adsorption on the mold surface, cool and form, and then demold.

[0003] Thermoforming mainly includes two modes: negative pressure adsorption and positive-negative pressure adsorption. Among them, as Figures 1-2 shown, the thermoforming mold for positive-negative pressure adsorption mainly includes an upper mold backing plate, an upper template, a push plate, a lower template, a lower mold backing plate, and a cylinder. Among them, an insert for plastic sheet forming is provided at the bottom of the upper template, and a mold groove matching with the insert is provided at the top of the lower template. When the mold is closed, the insert is placed in the mold groove. An adsorption mechanism for forming negative pressure is provided on the upper mold backing plate, and a pressing mechanism for forming positive pressure is provided on the lower mold backing plate. Under the simultaneous action of negative pressure on the upper side and positive pressure on the lower side, the plastic sheet is tightly attached to a plurality of inserts. When demolding the above-mentioned thermoforming mold for positive-negative pressure adsorption, first, the upper template and the lower template are separated, and then the cylinder is used to push the push plate downward to demold the plastic sheet attached to the insert. The demolding of this thermoforming mold is achieved by applying pressure to the top of the plastic sheet on the push plate. For the demolding of inserts with relatively small sizes, it has a better demolding effect. However, when the insert is relatively large and the plastic sheet has a large contact area with the insert, the demolding effect is poor. Summary of the Invention

[0004] The purpose of the present invention is to provide a demolding device for a thermoforming mold and its using method, which can be applicable to the demolding of thermoforming molds with large-sized inserts.

[0005] In addition, the present invention also provides a thermoforming mold including the above demolding device.

[0006] The present invention is achieved through the following technical solutions:

[0007] A demolding device for a thermoforming mold, comprising:

[0008] Inserts, which are arranged at the bottom of the upper template of the thermoforming mold; a plurality of inserts are arranged in parallel; each insert includes a U-shaped seat, and a plastic molding module is rotatably arranged on each of the two side walls of the U-shaped seat. The plastic molding module is connected to the bottom of the U-shaped seat through at least two adjusting components. Each adjusting component includes two connecting plates. One end of each connecting plate is hinged to the top of the plastic molding module, and the other end is slidably connected to the bottom of the U-shaped seat. The two connecting plates form a "V" shape, and a spring is connected between the two connecting plates;

[0009] An adjusting plate, which is arranged between the two connecting plates;

[0010] A second telescopic member, the end of the telescopic end is hinged to the adjusting plate, and is used to adjust the lifting of the adjusting plate;

[0011] A push plate, which is used to apply a downward thrust to the plastic sheet during demolding.

[0012] In the prior art, a number of inserts arranged in a matrix are provided at the bottom of the upper template. The size of the inserts is usually small, that is, after the plastic sheet is molded, the contact area between the plastic sheet and the inserts is small. The downward thrust applied to the plastic sheet by the push plate can complete the rapid demolding of the plastic sheet. However, when the size of the insert is large, after the plastic sheet is molded, the contact area between the plastic sheet and the insert is large. It is very difficult to achieve the rapid demolding of the plastic sheet only by the downward thrust applied to the plastic sheet by the push plate.

[0013] In the present invention, the structure of the insert is improved. The insert is no longer a whole block structure, but includes two rotatable molding modules. When the demolding device is closed, the molding modules are in a horizontal state, and the two molding modules on the same insert are in contact with each other and can be used for molding the plastic sheet; when demolding, the molding modules can be rotated to adjust the molding modules from a horizontal state to an inclined state. At this time, under the combined action of the rotation of the molding modules and the thrust applied to the plastic sheet by the push plate, the inclined setting of the molding modules reduces the contact area between the molding modules and the plastic sheet, which is beneficial for the push plate to achieve the rapid demolding of the plastic sheet.

[0014] In order to realize the rotation of the molding module, the present invention is provided with an adjusting assembly in cooperation. By using the expansion and contraction of the second telescopic member, the opening and closing of two connecting plates in the adjusting assembly are adjusted, and then the rotation of the molding module is realized. The adjusting assembly of the present invention can not only realize the stable rotation of the molding module, but also facilitate the reset of the molding module, and has a simple structure, and the inclination angle of the molding module can be adjusted according to actual needs, improving the convenience of operation.

[0015] In summary, the demolding device of the present invention can be applied to the demolding of a thermoforming mold with large-sized inserts.

[0016] In a preferred manner, the push plate includes a frame, and a plurality of pressing plates are arranged between two symmetric sides of the frame. When the thermoforming mold is closed, the pressing plates are arranged outside the insert; when demolding, the pressing plates apply a downward thrust to the plastic sheet, and the push plate is connected to a first telescopic member arranged on the thermoforming mold.

[0017] In a preferred manner, air inlet holes are arranged on the pressing plates; a strip hole is arranged along the length direction inside the pressing plates, and a plurality of purging holes are arranged on both sides of the strip hole inside the pressing plates. The purging holes are used to purge air flow to the connection surface between the molding module and the plastic sheet, and the strip hole connects the air inlet holes and the purging holes.

[0018] Before the pressing plate applies a downward thrust to the plastic sheet, the purging holes provided in the present invention can purge air flow to the joint surface between the plastic molding module and the plastic sheet. On the one hand, the purging air flow can accelerate the cooling of the plastic sheet, and the plastic sheet with a lower temperature is more conducive to demolding. On the other hand, the purging air flow has a certain speed and can play a role in pre-loosening the demolding of the plastic sheet to a certain extent, that is, the purging air flow can weaken the bonding force between the plastic sheet and the plastic molding module, which is conducive to applying a downward pressure to the plastic sheet through the pressing plate to complete demolding later.

[0019] In a preferred manner, the purging holes on both sides of the strip-shaped hole are arranged staggeredly.

[0020] Compared with the side-by-side arrangement, the above setting can increase the speed of the air flow at the outlet of the purging holes, which is more conducive to the demolding of the plastic sheet.

[0021] In a preferred manner, the purging holes are inclined, and the outlet end of the purging hole is the lower end.

[0022] The purging air flow with a certain inclination angle can apply a certain thrust to the top of the plastic sheet while purging the air flow to the joint surface between the plastic molding module and the plastic sheet, and can improve the effect of the air flow weakening the bonding force between the plastic molding module and the plastic sheet.

[0023] In a preferred manner, a connecting member is provided on the pressing plate, and the connecting member is connected to the first telescopic member.

[0024] In a preferred manner, it further includes a guide plate provided on the plastic suction mold, and a guide rail is provided on the guide plate;

[0025] A guide block matching with the guide rail is provided on the outer wall of the push plate. When the push plate moves up and down, the guide block moves in the guide rail.

[0026] The above setting can improve the stability of the up-and-down displacement of the push plate.

[0027] In a preferred manner, the width of the adjusting plate gradually decreases from top to bottom. That is, the two vertical surfaces of the adjusting plate are inclined surfaces, and the inclination angle of the inclined surface has a certain degree of adaptability to the inclination of the connecting plate, which is more conducive to realizing the opening and closing degree between the two connecting plates in a "V" shape through the lifting of the adjusting plate.

[0028] A method for using a demolding device includes the following steps:

[0029] When the demolding device is closed, the plastic molding module is in a horizontal state, and the two plastic molding modules on the same insert are in contact with each other. At this time, the spring is in a natural state;

[0030] When the demolding device demolds, the push plate is moved downward to apply a downward thrust to the plastic sheet. At the same time, the adjusting plate is lowered by the second telescopic member, and the lowering of the adjusting plate increases the distance between the two connecting plates, so that the shaping module rotates to an inclined state until the plastic sheet is separated from the shaping module.

[0031] A plastic suction mold including the above demolding device further includes an upper mold backing plate, an upper template, a lower template, a lower mold backing plate, and a first telescopic member;

[0032] The insert is provided at the bottom of the upper template, and the upper mold backing plate is provided at the top of the upper template;

[0033] The fixed end of the first telescopic member is provided on the upper mold backing plate, and the telescopic end of the first telescopic member passes through the upper template and is connected to the push plate;

[0034] The lower mold backing plate is provided at the bottom of the lower template, and mold grooves corresponding to the inserts one by one are provided at the top of the lower template.

[0035] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0036] 1. By structurally improving the large-sized insert, the present invention sets two rotatable shaping modules and a regulating assembly for realizing the rotation of the shaping module. When the demolding device is closed, the shaping module is in a horizontal state; when demolding, the shaping module can be rotated from the horizontal state to an inclined state. At this time, under the combined action of the rotation of the shaping module and the thrust applied by the push plate to the plastic sheet, the inclined setting of the shaping module reduces the contact area between the shaping module and the plastic sheet, which is conducive to the push plate to quickly demold the plastic sheet.

[0037] 2. Before applying a downward thrust to the plastic sheet by using the pressing plate, the present invention first blows air flow through the purging holes provided on the pressing plate to the connection surface between the plastic sheet and the shaping module, which can reduce the bonding force between the plastic sheet and the shaping module, facilitating the subsequent application of a downward thrust by the pressing plate to complete demolding, and further accelerating the demolding of the plastic sheet. Description of the Drawings

[0038] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, form a part of this application, and do not limit the embodiments of the present invention. In the drawings:

[0039] Figure 1 is the overall structural schematic diagram of the existing plastic suction mold;

[0040] Figure 2 is the exploded schematic diagram of the existing plastic suction mold;

[0041] Figure 3 is the overall structural schematic diagram of the plastic suction mold of the present invention;

[0042] Figure 4 This is an explosion diagram of the thermoforming mold of the present invention;

[0043] Figure 5 This is a longitudinal sectional view of the thermoforming mold of the present invention;

[0044] Figure 6 For the present invention Figure 5 Partial enlarged view of part A in;

[0045] Figure 7 This is a schematic diagram of the insert unfolding during demolding of the present invention;

[0046] Figure 8 This is a top view of the ejector plate of the present invention;

[0047] Figure 9 This is a partial sectional view of the pressure plate of the present invention.

[0048] Marks in the drawings and corresponding component names:

[0049] 1 - upper die backing plate; 2 - upper template; 3 - ejector plate; 4 - lower template; 5 - lower die backing plate; 6 - first telescopic member; 7 - second telescopic member; 8 - guide plate; 21 - insert; 31 - pressure plate; 32 - connecting member; 33 - air inlet hole; 34 - frame; 41 - mold cavity; 42 - guide block; 211 - U-shaped seat; 212 - spring; 213 - adjusting plate; 214 - connecting plate; 215 - plastic molding module; 311 - strip hole; 312 - purging hole. Detailed implementation manners

[0050] To make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below in conjunction with embodiments. The illustrative embodiments and descriptions of the present invention are only used to explain the present invention and are not intended to limit the present invention. The following described embodiments are some embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0051] In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present invention. However, it is obvious to those of ordinary skill in the art that the present invention does not have to be implemented with these specific details. In other embodiments, well-known structures, materials or methods are not specifically described in order to avoid obscuring the present invention. Materials, instruments and reagents used in the following embodiments, unless otherwise specified, can all be obtained from commercial channels. The technical means used in the embodiments, unless otherwise specified, are all conventional means well-known to those skilled in the art.

[0052] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, "a plurality of" means two or more, unless otherwise specifically defined.

[0053] Embodiment 1:

[0054] As Figures 1-2 shown, the existing plastic suction mold for positive and negative pressure adsorption mainly includes an upper die backing plate 1, an upper template 2, a push plate 3, a lower template 4, a lower die backing plate 5, and a cylinder. Among them, an insert 21 for plastic sheet forming is provided at the bottom of the upper template 2, and a mold groove 41 matching the insert 21 is provided at the top of the lower template 4. When the mold is closed, the insert 21 is placed in the mold groove 41. An adsorption mechanism for forming negative pressure is provided on the upper die backing plate 1, and a pressing mechanism for forming positive pressure is provided on the lower die backing plate 5. Under the simultaneous action of negative pressure on the upper side and positive pressure on the lower side, the plastic sheet is tightly attached to a plurality of inserts 21.

[0055] As Figures 3-8 shown, in order to realize the demolding process of the plastic suction mold with a large-area insert 21, this embodiment provides a demolding device for a plastic suction mold, including:

[0056] The insert 21 is provided at the bottom of the upper template 2 of the plastic suction mold; a plurality of inserts 21 are arranged in parallel, that is, a plurality of inserts 21 with larger sizes are arranged in parallel at the bottom of the upper template 2. The insert 21 includes a U-shaped seat 211, and a plastic molding module 215 is rotatably arranged on each of the two side walls of the U-shaped seat 211. In a specific case, a U-shaped groove is provided on the side wall of the U-shaped seat 211, and the plastic molding module 215 is a convex structure. The small ends of the convex structure are connected to the side walls of the U-shaped groove through a rotating shaft. The same plastic molding module 215 is connected to the bottom of the U-shaped seat 211 through at least two adjusting components. The adjusting component includes two connecting plates 214. One end of the connecting plate 214 is hinged to the top of the plastic molding module 215, and the hinge point is far from the rotating connection between the plastic molding module 215 and the U-shaped seat 211. The other end is slidably connected to the bottom of the U-shaped seat 211. The two connecting plates 214 form a "V" shape, that is, the distance between the two connecting plates 214 gradually decreases from top to bottom. The two connecting plates 214 are connected by a spring 212. When the spring 212 is stretched, the restoring force generated by it is used to realize the reset of the two connecting plates 214.

[0057] The adjusting plate 213 is arranged between the two connecting plates 214; the distance between the two connecting plates 214 is adjusted by moving the adjusting plate 213 up and down, that is, when the adjusting plate 213 moves downward until the distance between the two connecting plates 214 is smaller than the width of the adjusting plate 213, the adjusting plate 213 opens the two connecting plates 214. At this time, the inclination angle of the connecting plate 214 becomes larger, and the change in the inclination angle of the connecting plate 214 drives the molding module 215 to rotate.

[0058] In a preferred case, the width of the adjustment plate 213 tends to gradually decrease from top to bottom; that is, the two vertical surfaces of the adjustment plate 213 are inclined surfaces, and the inclination angle of the inclined surfaces has a certain degree of adaptability with the inclination of the connecting plate 214, which is more conducive to realizing the opening and closing degree between the two "V"-shaped connecting plates 214 through the lifting and lowering of the adjustment plate 213.

[0059] The second telescopic member 7 has a telescopic end hinged to the adjustment plate 213 and is used to adjust the lifting and lowering of the adjustment plate 213 ; the second telescopic member 7 may specifically be a cylinder, a hydraulic cylinder, or the like.

[0060] The push plate 3 is used to apply a downward thrust to the plastic sheet during demoulding. In a specific case, the push plate 3 includes a frame 34, which is specifically a rectangular frame. A plurality of pressure plates 31 are arranged between two symmetrical sides of the frame 34. When the blister mold is closed, the pressure plate 31 is arranged on the outside of the insert 21; when demoulding, the pressure plate 31 applies a downward thrust to the plastic sheet, and the push plate 3 is connected to the first telescopic member 6 arranged on the blister mold; the first telescopic member 6 can specifically be a cylinder, a hydraulic cylinder, etc. In a specific implementation, a connecting member 32 is arranged on the pressure plate 31, and the connecting member 32 is connected to the first telescopic member 6.

[0061] In specific implementation, when the same shaping module 215 is connected to the bottom of the U-shaped seat 211 through two adjustment components, one second telescopic member 7 can be set corresponding to one adjustment component; when the same shaping module 215 is connected to the bottom of the U-shaped seat 211 through three or more adjustment components, in order to reduce the usage of the second telescopic member 7 and realize the synchronous control of multiple adjustment components, a strip plate is set at the telescopic end of the second telescopic member 7, and the strip plate is hinged to multiple adjustment plates 213.

[0062] In a preferred case, it also includes a guide plate 8 arranged on the blister mold, and a guide rail is arranged on the guide plate 8;

[0063] A guide block 42 that matches the guide rail is disposed on the outer wall of the push plate 3. When the push plate 3 moves up and down, the guide block 42 moves in the guide rail.

[0064] The method for using the demoulding device of this embodiment comprises the following steps:

[0065] When the demolding device is in the mold closing state, the shaping module 215 is in a horizontal state, and the two shaping modules 215 on the same insert 21 are in contact with each other. At this time, the spring 212 is in a natural state;

[0066] When the demolding device demolds, the push plate 3 is moved downward to apply a downward thrust to the plastic sheet; at the same time, the adjusting plate 213 is lowered through the second telescopic member 7. The lowering of the adjusting plate 213 increases the distance between the two connecting plates 214, so that the shaping module 215 rotates to an inclined state until the plastic sheet is separated from the shaping module 215.

[0067] In this embodiment, by structurally improving the large-sized insert 21, by providing two rotatable shaping modules 215 and a matching adjusting component for realizing the rotation of the shaping module 215, when the demolding device is in the mold closing state, the shaping module 215 is in a horizontal state; when demolding, the shaping module 215 can be rotated to adjust the shaping module 215 from a horizontal state to an inclined state. At this time, under the combined action of the rotation of the shaping module 215 and the thrust applied by the push plate 3 to the plastic sheet, the inclined setting of the shaping module 215 reduces the contact area between the shaping module 215 and the plastic sheet, which is beneficial for the push plate 3 to quickly demold the plastic sheet.

[0068] Embodiment 2:

[0069] This embodiment is based on Embodiment 1. As Figures 8-9 shown, an air inlet hole 33 is provided on the pressing plate 31; a strip-shaped hole 311 is provided in the pressing plate 31 along its length direction. On both sides of the strip-shaped hole 311 in the pressing plate 31, a plurality of purging holes 312 are provided. The purging holes 312 are used to purge air flow to the connection surface between the shaping module 215 and the plastic sheet. The strip-shaped hole 311 connects the air inlet hole 33 and the purging holes 312.

[0070] In a preferred case, the purging holes 312 on both sides of the strip-shaped hole 311 are arranged staggeredly.

[0071] In a preferred case, the purging holes 312 are inclined, and the outlet end of the purging hole 312 is the lower end.

[0072] In this embodiment, before using the pressing plate 31 to apply a downward thrust to the plastic sheet, the air flow is first purged to the connection surface between the plastic sheet and the shaping module 215 by the purging holes 312 provided on the pressing plate 31, which can reduce the bonding force between the plastic sheet and the shaping module, and is beneficial for subsequent use of the pressing plate 31 to apply a downward thrust to the plastic sheet to complete demolding, further accelerating the demolding of the plastic sheet.

[0073] Embodiment 3:

[0074] As Figures 1-9As shown, a plastic thermoforming mold including a demolding device as described in Embodiment 1 or Embodiment 2 further includes an upper die backing plate 1, an upper template 2, a lower template 4, a lower die backing plate 5, and a first telescopic member 6;

[0075] The insert 21 is disposed at the bottom of the upper template 2, and the upper die backing plate 1 is disposed on the top of the upper template 2; an adsorption mechanism for forming negative pressure is disposed on the upper die backing plate 1;

[0076] The fixed end of the first telescopic member 6 is disposed on the upper die backing plate 1, and the telescopic end of the first telescopic member 6 passes through the upper template 2 and is connected to the push plate 3; the fixed end of the second telescopic member 7 is also disposed on the upper die backing plate 1;

[0077] The lower die backing plate 5 is disposed at the bottom of the lower template 4, and a die groove 41 corresponding to the insert 21 one by one is disposed on the top of the lower template 4. A pressing mechanism for forming positive pressure is disposed on the lower die backing plate 5. Both the adsorption mechanism and the pressing mechanism are prior arts, and the plastic sheet is pressed against a plurality of inserts 21 under the simultaneous action of negative pressure on the upper side and positive pressure on the lower side of the plastic sheet.

[0078] The working process of this embodiment is as follows:

[0079] Place the plastic sheet to be processed on the lower template 4, and then move the upper template 2 downward to realize the closing of the upper template 2 and the lower template 4. At this time, the plastic sheet is pressed between the die groove 41 and the insert 21, and the plastic sheet is shaped by heating.

[0080] After shaping, then move the upper template 2 upward to realize the opening of the upper template 2 and the lower template 4, then drive the first telescopic member 6 to extend, realize the downward movement of the push plate 3, and at the same time drive the second telescopic member 7 to extend, realize the rotation of the shaping module 215, and complete the demolding of the plastic sheet under the thrust of the push plate 3.

[0081] The specific embodiments described above further elaborate on the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only the specific embodiments of the present invention and is not used to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0082] It should be noted that the structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the conditions under which the present invention can be implemented. Therefore, they do not have a substantial technical meaning. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle", etc. cited in this specification are only for the convenience of clear description and are not used to limit the scope in which the present invention can be implemented. The change or adjustment of their relative relationships, without substantial change in the technical content, should also be regarded as the scope in which the present invention can be implemented.

Claims

1. A demoulding device for a blister mold, characterized in that: include: An insert (21) is arranged at the bottom of the upper mold plate (2) of the blister mold; a plurality of inserts (21) are arranged in parallel; the insert (21) comprises a U-shaped seat (211), and a molding module (215) is rotatably arranged on each of the two side walls of the U-shaped seat (211); the molding module (215) is connected to the bottom of the U-shaped seat (211) via at least two adjustment components, and the adjustment components comprise two connecting plates (214), one end of the connecting plate (214) is hinged to the top of the molding module (215), and the other end is slidably connected to the bottom of the U-shaped seat (211), the two connecting plates (214) form a "V" shape, and the two connecting plates (214) are connected via a spring (212); When the demoulding device is closed, the molding module (215) is in a horizontal state, and two molding modules (215) on the same insert (21) are in contact with each other, so as to be used for molding the plastic sheet; An adjustment plate (213) disposed between the two connecting plates (214); A second telescopic member (7), the telescopic end of which is hinged to the adjustment plate (213) and is used to adjust the lifting and lowering of the adjustment plate (213); A push plate (3) is used to apply a downward thrust to the plastic sheet during demoulding; the push plate (3) comprises a frame (34), a plurality of pressure plates (31) are arranged between two symmetrical sides of the frame (34), and when the blister mold is closed, the pressure plate (31) is arranged outside the insert (21); when demoulding, the pressure plate (31) applies a downward thrust to the plastic sheet, and the push plate (3) is connected to a first telescopic member (6) arranged on the blister mold.

2. A demoulding device for a blister mold according to claim 1, characterized in that: The pressing plate (31) is provided with an air inlet hole (33); the pressing plate (31) is provided with a strip hole (311) along its length direction; the pressing plate (31) is provided with a plurality of purge holes (312) on both sides of the strip hole (311); the purge holes (312) are used to purge air flow toward the connection surface between the molding module (215) and the plastic sheet; the strip hole (311) enables the air inlet hole (33) to communicate with the purge hole (312).

3. A demoulding device for a blister mold according to claim 2, characterized in that: The purge holes (312) on both sides of the strip-shaped holes (311) are arranged in a staggered manner.

4. A demoulding device for a blister mold according to claim 2, characterized in that: The purge hole (312) is arranged obliquely, and the outlet end of the purge hole (312) is the lower end.

5. A demoulding device for a blister mold according to claim 1, characterized in that: A connecting piece (32) is provided on the pressing plate (31), and the connecting piece (32) is connected to the first telescopic piece (6).

6. A demoulding device for a blister mold according to claim 1, characterized in that: It also includes a guide plate (8) arranged on the blister mold, wherein the guide plate (8) is provided with a guide rail; A guide block (42) that matches the guide rail is provided on the outer wall of the push plate (3); when the push plate (3) moves up and down, the guide block (42) moves inside the guide rail.

7. A demoulding device for a blister mold according to any one of claims 1 to 6, characterized in that: The width of the adjustment plate (213) tends to gradually decrease from top to bottom.

8. The method for using the demoulding device according to any one of claims 1 to 7, characterized in that: The following steps are involved: When the demoulding device is in mold closing, the molding module (215) is in a horizontal state, and two molding modules (215) on the same insert (21) are in contact with each other, and at this time, the spring (212) is in a natural state; When the demoulding device is demoulding, the push plate (3) is moved downward to apply a downward thrust to the plastic sheet; at the same time, the adjustment plate (213) is lowered through the second telescopic member (7), and the lowering of the adjustment plate (213) increases the distance between the two connecting plates (214), thereby causing the molding module (215) to rotate to a tilted state until the plastic sheet is separated from the molding module (215).

9. A blister mold comprising the demoulding device according to any one of claims 1 to 7, characterized in that: It also includes an upper die pad (1), an upper die plate (2), a lower die plate (4), a lower die pad (5) and a first telescopic member (6); The insert (21) is arranged at the bottom of the upper mold plate (2), and the upper mold pad (1) is arranged at the top of the upper mold plate (2); The fixed end of the first telescopic member (6) is arranged on the upper mold plate (1), and the telescopic end of the first telescopic member (6) passes through the upper mold plate (2) and is connected to the push plate (3); The lower die pad (5) is arranged at the bottom of the lower die plate (4), and a die groove (41) corresponding one-to-one to the insert (21) is arranged at the top of the lower die plate (4).

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