Die and method for vacuum encapsulation of screen

Abstract

The invention provides a screen vacuum encapsulation mold which is characterized in that a backing ring surrounds the outer side of the upper end of a lower mold, sleeves are arranged in the backing ring, air bags are arranged in the sleeves, the upper ends of the sleeves are in sliding nested connection with sliding blocks, the upper ends of the sliding blocks are in sliding nested connection with extension rings, and the extension rings are in sliding nested connection with the inner side of the backing ring in the vertical direction; the air bag in the sleeve of the backing ring expands by utilizing high temperature of raw materials, when the air bag expands due to the high temperature of the raw materials, the air bag integrally expands in the sleeve, at the moment, the air bag can be extruded to one end of the sliding block, and the sliding block slides towards one end of the extension ring and drives the extension ring to slide towards the upper end of the upper die; and at the moment, the extension ring can assist the backing ring to further seal the upper mold and the lower mold, so that the mold can further protect the raw materials by utilizing the high temperature of the raw materials when the raw materials overflow.

Description

Technical Field

[0001] The invention relates to the technical field of metal casting, in particular to a screen vacuum encapsulation mold and a method. Background Art

[0002] Vacuum forming is to fix the screen on the mold, heat it to the softening temperature with a radiant heater, and then use a vacuum pump to remove the air between the screen and the mold, so that the parison is formed according to the contour of the mold. The screen vacuum forming requires the liquid compound to be accurately injected into the mold, and a tough thermosetting insulation layer is formed through solidification, which can improve the screen's protection against impact and vibration. This is a technical inspiration for the mold; The following problems were found in the mold research: The mold is usually divided into two parts, the upper and lower parts are fitted together to extrude the raw materials inside the mold. After the raw materials are filled into the mold, the extrusion of the upper and lower parts easily causes the raw materials to overflow from the outside of the mold, which in turn causes burrs to form on the outside of the screen after molding, requiring subsequent secondary processing, which in turn causes the mold to be unable to further prevent the raw materials from overflowing during the extrusion molding process. The vacuum potting process requires two injections of glue into the mold, and the screen bracket is formed after high-temperature baking. By using 470-wavelength UV glue to replace the original first glue, the curing time is only 180s, and two injections can be performed, which can save about 1 hour in the injection process. At present, CN202311119200.4 in the prior art discloses a mold for making a semi-solid screen bracket. The invention discloses a mold. A gate sleeve assembly and a mold base are provided on the inner side of the die-casting machine plate. A mold core is embedded in the mold base. The center position of the mold base and the center position of the mold core are provided with a groove body that is interconnected. The groove body and the gate sleeve assembly match each other; the gate sleeve assembly includes a protruding nozzle fixing assembly, and the nozzle fixing assembly and the die-casting machine plate form a channel that is interconnected and extends into the mold core. The channel is used to place the injection nozzle so that it extends into the mold core. The mold is modularly designed, which overcomes the hot runner design in the prior art, so that the pouring equipment is directly connected to the mold cavity and directly contacts the product, saving excess gate material, greatly reducing costs, realizing semi-solid center pouring, and at the same time improving the sand hole problem at the pouring location of the appearance surface of the injection appearance part, and improving the die-casting quality of the product; The present invention can mainly solve the problem that the mold cannot further prevent the raw material from overflowing during the extrusion molding process. Summary of the invention

[0003] The purpose of the present invention is to provide a screen vacuum encapsulation mold and method.

[0004] To achieve the above object, the present invention provides the following technical solutions: A screen vacuum potting mold and method, comprising a lower mold, the upper end of which is movably connected to an upper mold, a potting tube running through the interior of the upper mold, and gaskets inlaid on both sides of the inner wall of the potting tube.

[0005] As a further solution of the present invention: the lower mold and the upper mold are engaged and clamped by bolts, and mold grooves are provided inside the lower mold and the upper mold.

[0006] As a further solution of the present invention: the lower end of the potting tube is vertically corresponding to the lower mold.

[0007] As a further solution of the present invention: the gaskets are grouped in pairs, the upper side walls of the gaskets are inlaid with the potting tube, the gaskets are funnel-shaped as a whole, and the gaskets are made of deformable high-temperature resistant material, such as heat-resistant ABS resin material.

[0008] As a further solution of the present invention: a lower rotating shaft is hingedly connected to the inner wall of the sealing tube near the gasket below, the lower rotating shaft is swingably connected to a side plate on the side close to the gasket, the upper end of the side plate is slidingly sleeved and connected to a sliding frame, the sliding frame is swingably connected to the side close to the inner wall of the sealing tube with an upper rotating shaft, and the upper rotating shaft is hinged to the inner wall of the sealing tube.

[0009] As a further solution of the present invention: the side panel is inclined upward by 25-90 degrees, one side of the side panel is tightly fitted against the outer wall of the gasket, a sliding groove is provided on the side of the side panel close to the sliding frame, one end of the sliding frame slides obliquely inside the sliding groove, the side of the side panel close to the gasket is arranged in an arc shape, and the side panel and the gasket are arranged in a matching manner.

[0010] As a further solution of the present invention: the sliding frame is arranged in a "T" shape, the sliding frame is inclined downward by 5-50 degrees, the sliding frame is matched with the side plate, when the side plate swings upward, the sliding frame swings upward synchronously, and the weight of the sliding frame is 200-400g.

[0011] As a further solution of the present invention: the outer side of the upper end of the lower mold is surrounded by a gasket ring, the interior of the gasket ring is arranged with a sleeve, the interior of the sleeve is provided with an airbag, the upper end of the sleeve is slidably nested and connected with a slider, the upper end of the slider is slidably connected with an extension ring, and the extension ring is slidably nested and connected to the inner side of the gasket ring in a vertical direction.

[0012] As a further solution of the present invention: a groove is provided on the inner side of the upper mold, the shape of the groove matches the shape of the gasket ring, the gasket ring and the extension ring are nested and docked with the groove in a vertical direction, a slot is provided on the upper end of the gasket ring, and the sleeve, airbag and slider are all located inside the slot.

[0013] As a further solution of the present invention: the slider and the sleeve are vertically mounted, and multiple sets of sliders and sleeves are provided. The upper end of the slider is connected to the lower end of the extension ring, and the lower end of the slider is connected to the top of the airbag.

[0014] As a further solution of the present invention: the airbag is elliptical in shape, and when the airbag is not inflated, the height of the airbag is half of the internal height of the sleeve.

[0015] As a further solution of the present invention: the method comprises the following steps: S1: Fill the lower mold with raw materials, then cover the upper mold with the lower mold, and inject glue into the potting tube. The glue gun squeezes the upper end of the gasket, and the gasket deforms on the inner wall of the potting tube. Use 470 wavelength UV glue to replace the original first glue. The curing time is only 180s, and the glue can be injected twice, which can save about 1h in the injection process. S2: When the upper mold and the lower mold are fitted, the gasket and the extension ring are both clamped in the groove of the upper mold. As the upper mold and the lower mold are squeezed against each other, the raw materials and glue inside the upper mold and the lower mold overflow, and the gasket can form a preliminary seal between the upper mold and the lower mold; S3: After the gasket is deformed by the glue gun, it is squeezed to one side of the side plate. At this time, the side plate swings upward through the lower shaft, and the sliding frame swings upward synchronously through the upper shaft, and the glue gun injects glue into the interior of the lower mold; S4: After the injection is completed, the upper end of the gasket loses its extrusion. At this time, the sliding frame can slide back downward using the upper rotating shaft by utilizing the weight of the side plate and the sliding frame. S5: The side plate slides downward through the lower rotating shaft and is squeezed. At this time, the sliding frame can quickly squeeze to one side of the gasket, and the gasket can quickly deform and return to its original position; S6: When the raw material and glue continue to overflow, glue and raw material are accumulated on the surface of the gasket ring. The high temperature of the raw material is used to expand the airbag inside the sleeve of the gasket ring. When the airbag expands due to the high temperature of the raw material, the airbag expands inside the sleeve as a whole; S7: The airbag can be squeezed to one end of the slider, the slider slides toward one end of the extension ring, and the slider drives the extension ring to slide toward the upper end of the upper mold. Beneficial Effects

[0016] 1. After the gasket is deformed by the glue gun, it is squeezed to one side of the side plate. At this time, the side plate swings upward through the lower shaft to facilitate the spacing between the gaskets. When the side plate swings upward, the sliding frame swings upward synchronously through the upper shaft to facilitate the glue gun to inject glue into the lower mold; 2. After the glue injection is completed, the upper end of the gasket loses its extrusion. At this time, the weight of the side plate and the sliding frame is used, and the sliding frame can slide back to its position by using the upper rotating shaft, while the side plate slides downward and squeezes through the lower rotating shaft. At this time, the sliding frame can quickly squeeze to one side of the gasket, and the gasket can quickly deform and return to its position, so that the gasket can quickly seal the lower end of the potting tube to prevent the glue inside the lower mold from overflowing into the inside of the potting tube again; 3. When the upper mold and the lower mold are fitted, the gasket and the extension ring are both clamped in the groove of the upper mold. As the upper mold and the lower mold are squeezed against each other, the raw materials and glue inside the upper mold and the lower mold overflow, and the gasket can form a preliminary seal between the upper mold and the lower mold; 4. When the raw material and glue continue to overflow, the raw material enters the groove of the upper mold, causing glue and raw materials to accumulate on the surface of the gasket ring. The high temperature of the raw material is used to expand the airbag inside the sleeve of the gasket ring. When the airbag expands due to the high temperature of the raw material, the airbag expands as a whole inside the sleeve. At this time, the airbag can be squeezed to one end of the slider, and the slider slides toward one end of the extension ring. The slider drives the extension ring to slide toward the upper end of the upper mold. At this time, the extension ring can assist the gasket ring to further form a seal between the upper mold and the lower mold, so that this type of mold can use the high temperature of the raw material to further protect the raw material when the raw material overflows. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 It is an overall explosion schematic diagram of the present invention.

[0019] Figure 3 For the present invention Figure 2 Middle top view schematic.

[0020] Figure 4 It is a schematic diagram of the explosion of the upper mold of the present invention.

[0021] Figure 5 It is a schematic cross-sectional view of the potting tube of the present invention.

[0022] Figure 6 It is a schematic diagram of the explosion of the potting tube of the present invention.

[0023] Figure 7 It is a schematic diagram of the explosion of the lower mold of the present invention.

[0024] Figure 8 It is a schematic diagram of the explosion of the gasket ring of the present invention.

[0025] Fig. 9 It is a schematic diagram of the explosion of the sleeve of the present invention.

[0026] Figure 1-9 Middle: 1-lower mold, 101-upper mold, 2-potting tube, 201-gasket, 3-lower rotating shaft, 301-side plate, 302-upper rotating shaft, 303-sliding frame, 4-gasket ring, 401-extension ring, 5-sleeve, 501-slider, 502-air bag. DETAILED DESCRIPTION

[0027] See also Figure 1-9 In the embodiment of the present invention, Embodiment 1: A mold and method for vacuum potting of a screen, comprising a lower mold 1, the upper end of which is movably connected to an upper mold 101, a potting tube 2 passes through the interior of the upper mold 101, and gaskets 201 are inlaid on both sides of the inner wall of the potting tube 2; Wherein: the lower mold 1 and the upper mold 101 are engaged and clamped by bolts, and mold grooves are provided inside the lower mold 1 and the upper mold 101; The lower mold 1 and the upper mold 101 are both provided with mold grooves, and the mold grooves are filled with raw materials to facilitate screen molding; A potting tube 2, the lower end of which is vertically corresponding to the lower mold 1; The potting tube 2 runs through the interior of the upper mold 101, so as to facilitate the potting of glue inside the lower mold 1; Gasket 201, each two gaskets 201 are in a group, the upper side wall of the gasket 201 is inlaid with the potting tube 2, the gasket 201 is funnel-shaped as a whole, and the gasket 201 is made of a deformable high-temperature resistant material, such as a heat-resistant ABS resin material; Wherein: by filling the lower mold 1 with raw materials, then covering the upper mold 101 on the upper end of the lower mold 1, and injecting glue into the potting tube 2 with a glue gun, the glue gun is squeezed to the upper end of the gasket 201, the gasket 201 is deformed on the inner wall of the potting tube 2, and the glue enters the lower mold 1 through the potting tube 2, completing the glue potting of the lower mold 1; Example 2: Refer to the attached manual Figure 1-6 It can be known that the difference between Example 2 and Example 1 is that a lower rotating shaft 3 is hingedly connected to the lower part of the inner wall of the potting tube 2 near the gasket 201, and a side plate 301 is swingably connected to the side of the lower rotating shaft 3 near the gasket 201, and a sliding frame 303 is slidably sleeved and connected to the upper end of the side plate 301, and an upper rotating shaft 302 is swingably connected to the side of the sliding frame 303 near the inner wall of the potting tube 2, and the upper rotating shaft 302 is hinged to the inner wall of the potting tube 2; Among them: the lower rotating shaft 3 and the side plate 301, the side plate 301 is inclined upward by 25-90 degrees, one side of the side plate 301 is tightly fitted with the outer wall of the gasket 201, a sliding groove is provided on the side of the side plate 301 close to the sliding frame 303, one end of the sliding frame 303 slides obliquely inside the sliding groove, the side of the side plate 301 close to the gasket 201 is arranged in an arc shape, and the side plate 301 is matched with the gasket 201; The side of the side plate 301 close to the gasket 201 is arranged in an arc shape, so that the side plate 301 can be attached to one side of the gasket 201 conveniently; A slide groove is provided on one side of the side plate 301 close to the slide frame 303, and one end of the slide frame 303 slides in an inclined manner inside the slide groove. Figure 5 As shown; The sliding frame 303 and the upper rotating shaft 302 are arranged in a "T" shape. The sliding frame 303 is inclined downward by 5-50 degrees. The sliding frame 303 is matched with the side plate 301. When the side plate 301 swings upward, the sliding frame 303 swings upward synchronously. The weight of the sliding frame 303 is 200-400g. The sliding frame 303 is arranged in a "T" shape, and is slidably engaged with one side of the side plate 301 by the sliding frame 303. The sliding frame 303 can be used to limit the swing angle of the side plate 301, so as to prevent the side plate 301 from swinging downward to the bottom of the potting tube 2 on one side of the gasket 201 due to the deformable material of the gasket 201; Wherein: after the gasket 201 is deformed by the glue gun, the gasket 201 is squeezed to one side of the side plate 301. At this time, the side plate 301 swings upward through the lower shaft 3, which is convenient for generating a gap between the gaskets 201. When the side plate 301 swings upward, the sliding frame 303 swings upward synchronously through the upper shaft 302, which is convenient for the glue gun to inject glue into the lower mold 1. After the glue injection is completed, the upper end of the gasket 201 loses its extrusion. At this time, the weight of the side plate 301 and the sliding frame 303 is utilized, and the sliding frame 303 can slide back to its original position by the upper rotating shaft 302, while the side plate 301 slides downward and is extruded by the lower rotating shaft 3. At this time, the sliding frame 303 can be quickly extruded to one side of the gasket 201, and the gasket 201 can be quickly deformed and returned to its original position, so that the gasket 201 can quickly seal the lower end of the potting tube 2, thereby preventing the glue inside the lower mold 1 from overflowing into the inside of the potting tube 2 again. Example 3: Refer to the attached manual Figure 3 , 7 -9 It can be known that the difference between Example 3 and Example 1-2 is that the outer side of the upper end of the lower mold 1 is surrounded by a gasket ring 4, the inner part of the gasket ring 4 is arranged with a sleeve 5, the inner part of the sleeve 5 is provided with an air bag 502, the upper end of the sleeve 5 is slidably nested with a slider 501, the upper end of the slider 501 is slidably connected with an extension ring 401, and the extension ring 401 is slidably nested and connected to the inner side of the gasket ring 4 in a vertical direction; Among them: the gasket 4, the inner side of the upper mold 101 is provided with a groove, the shape of the groove matches the shape of the gasket 4, the gasket 4 and the extension ring 401 are nested and docked with the groove in a vertical direction, the upper end of the gasket 4 is provided with a slot, and the sleeve 5, the airbag 502 and the slider 501 are all inside the slot; The inner side of the upper mold 101 is provided with a groove, the shape of which matches the shape of the gasket 4. Figure 3 As shown; The sleeve 5 and the slider 501 are vertically mounted. The slider 501 and the sleeve 5 are provided in multiple sets. The upper end of the slider 501 is connected to the lower end of the extension ring 401, and the lower end of the slider 501 is connected to the top of the airbag 502. The airbag 502 is oval in shape. When the airbag 502 is not inflated, the height of the airbag 502 is half of the internal height of the sleeve 5; The airbag 502 is elliptical in shape. When the airbag 502 is not inflated, the airbag 502 is in a contracted state as a whole; When the airbag 502 expands due to the high temperature of the raw material, the airbag 502 expands as a whole inside the sleeve 5, and at this time, the airbag 502 can be squeezed to one end of the slider 501; Wherein: when the upper mold 101 and the lower mold 1 are engaged, the gasket 4 and the extension ring 401 are both clamped in the groove of the upper mold 101. As the upper mold 101 and the lower mold 1 are squeezed against each other, the raw materials and glue inside the upper mold 101 and the lower mold 1 overflow, and the gasket 4 can form a preliminary seal between the upper mold 101 and the lower mold 1. When the raw material and glue continue to overflow, the raw material enters the groove of the upper mold 101, so that glue and raw material are accumulated on the surface of the gasket 4. The high temperature of the raw material is used to expand the airbag 502 inside the sleeve 5 of the gasket 4. When the airbag 502 expands due to the high temperature of the raw material, the airbag 502 expands as a whole inside the sleeve 5. At this time, the airbag 502 can be squeezed to one end of the slider 501, and the slider 501 slides toward one end of the extension ring 401. The slider 501 drives the extension ring 401 to slide toward the upper end of the upper mold 101. At this time, the extension ring 401 can assist the gasket 4 to further form a seal between the upper mold 101 and the lower mold 1, so that this type of mold can use the high temperature of the raw material to further protect the raw material when the raw material overflows; Example

[0028] S1: Fill the lower mold 1 with raw materials, then cover the upper mold 101 on the upper end of the lower mold 1, and inject glue into the potting tube 2 with a glue gun, squeeze the glue gun to the upper end of the gasket 201, and the gasket 201 is deformed on the inner wall of the potting tube 2. Use 470 wavelength UV glue to replace the original first glue, and the curing time is only 180s, so that two injections can be performed, and the injection process can save about 1h; S2: When the upper mold 101 and the lower mold 1 are fitted together, the gasket 4 and the extension ring 401 are both clamped in the groove of the upper mold 101. As the upper mold 101 and the lower mold 1 are squeezed against each other, the raw materials and glue inside the upper mold 101 and the lower mold 1 overflow, and the gasket 4 can form a preliminary seal between the upper mold 101 and the lower mold 1. S3: After the gasket 201 is deformed by the glue gun, the gasket 201 is squeezed to one side of the side plate 301. At this time, the side plate 301 swings upward through the lower shaft 3, and the sliding frame 303 swings upward synchronously through the upper shaft 302. The glue gun injects glue into the lower mold 1. S4: After the glue injection is completed, the upper end of the gasket 201 loses its compression. At this time, the sliding frame 303 can slide downward back to its original position by using the weight of the side plate 301 and the sliding frame 303 using the upper rotating shaft 302; S5: The side plate 301 slides downward through the lower rotating shaft 3, and the sliding frame 303 can be quickly pressed to one side of the gasket 201, and the gasket 201 can be quickly deformed and returned to its original position; S6: When the raw material and glue continue to overflow, glue and raw material are accumulated on the surface of the gasket 4. The high temperature of the raw material is used to expand the airbag 502 inside the sleeve 5 of the gasket 4. When the airbag 502 expands due to the high temperature of the raw material, the airbag 502 expands inside the sleeve 5 as a whole. S7: The airbag 502 can be squeezed to one end of the slider 501 , and the slider 501 slides toward one end of the extension ring 401 , and the slider 501 drives the extension ring 401 to slide toward the upper end of the upper mold 101 .

[0029] The above are only preferred embodiments of the present invention. It should be pointed out that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention. These should also be regarded as the protection scope of the present invention. These will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. A screen vacuum potting mold, characterized in that: include A lower mold (1), the upper end of the lower mold (1) being movably engaged with the upper mold (101), a potting tube (2) passing through the interior of the upper mold (101), and gaskets (201) being inlaid on both sides of the inner wall of the potting tube (2); The lower mold (1) and the upper mold (101) are engaged and clamped by bolts, and mold grooves are provided inside the lower mold (1) and the upper mold (101); A potting tube (2), wherein the lower end of the potting tube (2) is vertically corresponding to the lower mold (1); Gaskets (201), two gaskets (201) are grouped together, the upper end side walls of the gaskets (201) are inlaid with the potting tube (2), and the gaskets (201) are funnel-shaped as a whole.

2. A screen vacuum potting mold according to claim 1, characterized in that: A lower rotating shaft (3) is hingedly connected to the lower part of the inner wall of the potting tube (2) near the gasket (201); a side of the lower rotating shaft (3) near the gasket (201) is swingably connected to a side plate (301); an upper end of the side plate (301) is slidably sleevedly connected to a sliding frame (303); a side of the sliding frame (303) near the inner wall of the potting tube (2) is swingably connected to an upper rotating shaft (302); and the upper rotating shaft (302) is hingedly connected to the inner wall of the potting tube (2).

3. A screen vacuum potting mold according to claim 2, characterized in that: The side plate (301) is inclined upward at 25-90 degrees, one side of the side plate (301) is tightly fitted against the outer wall of the gasket (201), a slide groove is provided on the side of the side plate (301) close to the sliding frame (303), one end of the sliding frame (303) slides in an inclined manner inside the slide groove, the side of the side plate (301) close to the gasket (201) is arranged in an arc shape, and the side plate (301) and the gasket (201) are arranged in a matching manner.

4. A screen vacuum potting mold according to claim 2, characterized in that: The sliding frame (303) is arranged in a "T" shape, and is inclined downward by 5-50 degrees. The sliding frame (303) is matched with the side plate (301). When the side plate (301) swings upward, the sliding frame (303) swings upward synchronously. The weight of the sliding frame (303) is 200-400g.

5. The screen vacuum potting mold according to claim 2, characterized in that: The sliding frame (303) is slidably engaged with one side of the side plate (301), and the sliding frame (303) can be used to limit the swing angle of the side plate (301).

6. The screen vacuum potting mold according to claim 1, characterized in that: The outer side of the upper end of the lower mold (1) is surrounded by a gasket ring (4), the inner part of the gasket ring (4) is provided with a sleeve (5), the inner part of the sleeve (5) is provided with an air bag (502), the upper end of the sleeve (5) is slidably nested with a slider (501), the upper end of the slider (501) is slidably connected to an extension ring (401), and the extension ring (401) is slidably nested with the inner side of the gasket ring (4) in a vertical direction.

7. A screen vacuum potting mold according to claim 6, characterized in that: A groove is provided on the inner side of the upper mold (101), the shape of the groove matches the shape of the gasket ring (4), the gasket ring (4) and the extension ring (401) are nested and docked with the groove in a vertical direction, and a slot is provided on the upper end of the gasket ring (4), and the sleeve (5), the airbag (502) and the slider (501) are all located inside the slot.

8. The screen vacuum potting mold according to claim 6, characterized in that: The slider (501) and the sleeve (5) are vertically mounted, and multiple sets of the slider (501) and the sleeve (5) are matched. The upper end of the slider (501) is connected to the lower end of the extension ring (401), and the lower end of the slider (501) is connected to the top of the airbag (502).

9. The screen vacuum potting mold according to claim 6, characterized in that: The airbag (502) is elliptical in shape, and when the airbag (502) is not inflated, the height of the airbag (502) is half the internal height of the sleeve (5).

10. A method for vacuum potting a screen mold, characterized in that According to the screen vacuum encapsulation mold according to claims 1-9, the method comprises the following steps: S1: by filling the lower mold (1) with raw materials, then covering the upper end of the lower mold (1) with the upper mold (101), and injecting glue into the inside of the potting tube (2) with a glue gun, the glue gun is squeezed to the upper end of the gasket (201), and the gasket (201) is deformed on the inner wall of the potting tube (2). A 470 wavelength UV glue is used to replace the original first glue. The curing time is only 180 seconds, and the glue injection can be performed twice, and the glue injection process can save about 1 hour; S2: When the upper mold (101) and the lower mold (1) are engaged, the gasket (4) and the extension ring (401) are both clamped in the groove of the upper mold (101). As the upper mold (101) and the lower mold (1) are squeezed against each other, the raw materials and glue inside the upper mold (101) and the lower mold (1) overflow, and a preliminary seal can be formed between the upper mold (101) and the lower mold (1) through the gasket (4); S3: After the gasket (201) is deformed by the glue gun, the gasket (201) is squeezed to one side of the side plate (301). At this time, the side plate (301) swings upward through the lower rotating shaft (3), and the sliding frame (303) swings upward synchronously through the upper rotating shaft (302), and the glue gun injects glue into the interior of the lower mold (1); S4: After the injection of glue is completed, the upper end of the gasket (201) loses its compression. At this time, the sliding frame (303) can slide downwards back to its original position by utilizing the weight of the side plate (301) and the sliding frame (303) using the upper rotating shaft (302); S5: the side plate (301) slides downwards and is squeezed through the lower rotating shaft (3), at which time the sliding frame (303) can quickly squeeze to one side of the gasket (201), and the gasket (201) can quickly deform and return to its original position; S6: When the raw material and glue continue to overflow, glue and raw material are accumulated on the surface of the gasket (4), and the high temperature of the raw material is used to expand the airbag (502) inside the sleeve (5) of the gasket (4). When the airbag (502) expands due to the high temperature of the raw material, the airbag (502) expands as a whole inside the sleeve (5); S7: The airbag (502) can be squeezed to one end of the slider (501), and the slider (501) slides toward one end of the extension ring (401), and the slider (501) drives the extension ring (401) to slide toward the upper end of the upper mold (101).

Images