A pressing device for preparing explosion-proof valve protection patch with ventilation structure

Abstract

The present invention discloses a laminating device for preparing explosion-proof valve protective patches with a ventilation structure, and the present invention relates to the technical field of preparing explosion-proof valve protective patches. When there is a misalignment between the release film and the base material, there is no adjustment space, resulting in wrinkles. The explosion-proof valve protective patch with a ventilation structure uses the elastic force of the spring and the horizontal gasket ring to make the material pass through the gap between the laminating roller and the pre-pressing roller. Under the action of contact pressure, the laminating roller and the pre-pressing roller are driven to rotate by friction. During the rotation of the pre-pressing roller, the material is intermittently squeezed by the arc-shaped convex strip, so that the materials are intermittently pressed, and the materials are preliminarily pressed and positioned, so that the materials are not fully pressed. The materials are positioned before full pressing. At the same time, when there is a misalignment between the materials during pressing, the intermittent pressing allows the materials to be adjusted under the pressing action to avoid wrinkles.

Description

Technical Field

[0001] The invention relates to the technical field of explosion-proof valve protection patch preparation, in particular to a pressing device for preparing an explosion-proof valve protection patch with a ventilation structure. Background Art

[0002] At present, explosion-proof valve protection patches are sheet materials used to provide additional protection and auxiliary functions for explosion-proof valves. In many industrial environments, electronic equipment and other application scenarios, there may be dust, debris and other tiny particles in the outside world. Explosion-proof valve protection patches can cover the surface of explosion-proof valves to prevent these foreign objects from entering the inside of the explosion-proof valves, avoiding the accumulation of foreign objects affecting the normal opening and closing of explosion-proof valves, ensuring that they can effectively play the explosion-proof function at critical moments. For example, if there is no protection patch for explosion-proof valves on some electrical equipment in coal mines, coal dust can easily enter, which may cause the explosion-proof valve to be blocked over time. It is usually installed in relevant parts of the explosion-proof valve to enhance the performance of the explosion-proof valve, extend its service life and improve overall safety.

[0003] When a release film is pasted on the adhesive surface of the base material to protect the adhesive surface through a laminating device, the laminating device generally squeezes the materials together through a number of rollers to make them fit together. When there is a misalignment between the release film and the base material, there is no adjustment space, resulting in wrinkles. Summary of the invention

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: an explosion-proof valve protection patch with a ventilation structure, comprising:

[0005] A base sheet, which is an annular sheet and has good flexibility, one side of the base sheet is coated with an adhesive layer, one side of the base sheet is installed with a breathable film, the breathable film and the base sheet are fixed and sealed, and a release film is installed on the side of the base sheet coated with the adhesive layer, and the release film is attached to the base sheet through the adhesive layer coated on the base sheet.

[0006] A process for preparing an explosion-proof valve protection patch with a ventilation structure, comprising the following steps;

[0007] Step 1: Base treatment: clean the surface of the base material by cleaning equipment, remove the oil and impurities on the surface of the base material, and keep the surface of the base material clean and tidy;

[0008] Step 2: glue coating and film solidification: coating one side of the base material with an adhesive material, and after coating, laminating the surface of the base material with a breathable film, and then heating and curing the adhesive material to bond and fix the breathable film to the base sheet;

[0009] Step 3: Adhesive layer lamination: the other side of the base material is coated with the adhesive layer material required for lamination, and after the adhesive layer material is coated, the release film and the base material are laminated by a laminating device using the adhesive layer material;

[0010] Step 4: shaping and cutting. After the three layers of material are fixed and attached, the material is shaped and cut by cutting equipment into the required shape to form a single protective patch.

[0011] The pressing equipment in step 3 includes:

[0012] A frame, a pressing mechanism is fixedly installed on the top of the frame, a guiding mechanism is fixedly installed on one side of the top of the pressing mechanism, and a bubble scraping mechanism is fixedly installed on the other side of the top of the pressing mechanism;

[0013] The cam is provided with a plurality of camshafts, each of which is provided with a plurality of camshafts, each of which is provided with a plurality of camshafts, each of which is provided with a plurality of camshafts, each of which is provided with a plurality of camshafts, each of which is provided with a plurality of camshafts. The elastic force of the ring causes the film pressing roller and the pre-pressing roller to rotate due to friction under the action of contact pressure when the material passes through the gap between the film pressing roller and the pre-pressing roller, so that the material is intermittently squeezed by the arc-shaped convex strips during the rotation of the pre-pressing roller, so that the materials are intermittently pressed, and the materials are initially pressed and positioned while the materials are not fully pressed. The materials are positioned before full pressing, and when the materials are misaligned during pressing, the intermittent pressing allows the materials to be adjusted in position under the pressing action to avoid wrinkles. The transverse slots of the slide plate are all equipped with transverse gaskets, and the end of the transverse gasket close to the pre-pressing roller is in contact with the two ends of the outer side of the pre-pressing roller, and the outer side of the pre-pressing roller is evenly provided with arc-shaped convex strips.

[0014] The top of described sliding plate is fixedly mounted on the top of sliding plate, and the bottom of described sliding plate is fixedly mounted on the bottom of described sliding plate, and the sliding plate is symmetrically mounted along the axis center position of the top plate, and rod holes are opened at two ends of the fixing rod, and the fixing rod is adapted to slide with the outer side of the sliding rod through the rod holes.

[0015] Preferably, the guide mechanism includes a connecting plate, which is symmetrically installed along the axis center position of the fixed frame, and the top of the connecting plate is fixedly installed with an inclined groove plate, the outer side of the inclined groove plate is provided with an inclined groove, and a gasket is installed in the inclined groove of the inclined groove plate, and a side plate is fixedly installed on the top of the connecting plate close to the pressing mechanism. A guide roller and a clamping roller are installed between the connecting plates, and the two ends of the guide roller are rotatably connected to the inner wall of the connecting plate, and the two ends of the clamping roller are slidably adapted to the inclined groove of the inclined groove plate, and the outer sides of the clamping roller and the guide roller are provided with spiral arc convex strips, which are in contact with the release film through the spiral arc convex strips evenly arranged on the outer sides of the clamping roller and the guide roller. During the passage of the release film, the spiral arc There is a gap between the shaped convex strips. After the material stops moving, the elastic force of the gasket ring can push the clamping roller to press the release film in the gap to prevent the release film from sliding and causing misalignment of the pressing position with the rubber surface. A rod groove is opened on the top of the outer side of the side plate, and a guide rod is rotatably installed on the bottom of the opposite surface of the side plate. A film pressing rod is slidably installed at the rod groove of the side plate. The film pressing rod cooperates with the guide rod to limit the position of the base sheet and the release film during transportation, reduce the swing during transportation and avoid misalignment. At the same time, the guide rod separates the release film and the rubber surface of the base sheet to prevent the two from contacting and sticking before lamination, which causes wrinkles after lamination. Counterweights are fixedly installed at both ends of the film pressing rod.

[0016] Preferably, the bubble scraping mechanism comprises a connecting frame, a heightening plate is fixedly installed on the top of the connecting frame on one side away from the guide mechanism, a fixing plate is fixedly installed on the top of the heightening plate, a convex strip plate is fixedly installed on the bottom of the fixing plate, an axis groove is provided on the bottom of the convex strip plate close to the pressing mechanism, and a rotating shaft is rotatably installed at the axis groove of the convex strip plate, the bottom of the rotating shaft is lower than the bottom of the convex strip plate, the bottom of the convex strip plate on the side away from the guide mechanism is an inclined surface inclined inwardly from top to bottom, and an arc strip is fixedly installed on the side of the convex strip plate away from the guide mechanism, through the convex strip The arc strips of the plate are matched with the gap of the inclined surface. During the process of scraping bubbles, when encountering larger bubbles, the bubbles are restricted by the arc strips, so that the bubble scraping strip moves downward, stretching the elastic pad to generate greater elastic force, driving the bubble scraping strip to squeeze the bubbles upward, thereby improving the scraping effect of the bubbles; a bottom rod is slidably installed on the inner wall of the connecting frame, a bottom plate is fixedly installed on the bottom end of the bottom rod, an elastic pad is fixedly installed between the top of the bottom plate and the bottom of the connecting frame, a bubble scraping strip is fixedly installed on the top of the bottom rod, and the side of the bubble scraping strip close to the convex strip plate is an inclined surface and fits tightly with the inclined surface of the convex strip plate.

[0017] The present invention provides an explosion-proof valve protection patch with a ventilation structure. It has the following beneficial effects:

[0018] 1. The laminating equipment uses arc convex strips evenly arranged on the outer side of the pre-pressing roller. When the material enters, the elastic force of the spring and the transverse gasket is used to make the material pass through the gap between the laminating roller and the pre-pressing roller. Under the action of contact pressure, the laminating roller and the pre-pressing roller are driven to rotate by friction, so that during the rotation of the pre-pressing roller, the material is intermittently squeezed by the arc convex strips, so that the materials are intermittently pressed, and the materials are preliminarily pressed and positioned without being fully pressed. The materials are positioned before being fully pressed. At the same time, when the materials are misaligned during pressing, the intermittent pressing allows the materials to be adjusted in position under the pressing action to avoid wrinkles.

[0019] Second, the lamination equipment limits the lamination roller through the inclined slot of the slot plate, so that during the lamination process, the inclined pad ring causes the lamination roller to apply pressure obliquely upward under the action of elastic force, so that the material is deformed when passing through the lamination gap, so that the release film is in full contact with the adhesive surface of the base sheet, thereby improving the lamination effect. At the same time, a gap is left at the bottom of the lamination roller to provide misalignment adjustment space when the pre-pressing position is wrong with the pre-pressing roller.

[0020] 3. The laminating equipment contacts the release film through the spiral arc-shaped convex strips evenly arranged on the outside of the clamping roller and the guide roller. During the passage of the release film, there are gaps between the spiral arc-shaped convex strips. After the material stops moving, the elastic force of the gasket ring can push the clamping roller to press the release film in the gap to prevent the release film from sliding and causing misalignment of the laminating position with the adhesive surface.

[0021] Fourth, the lamination equipment, through the cooperation of the film pressing rod and the guide rod, limits the position of the base sheet and the release film during the transportation process, reduces the swing during the transportation process and avoids misalignment. At the same time, the guide rod separates the release film and the adhesive surface of the base sheet to avoid contact and adhesion between the two before lamination, which causes wrinkles after lamination.

[0022] 5. The pressing equipment cooperates with the arc strip of the convex strip plate and the gap between the inclined surface. When encountering larger bubbles during the scraping process, the arc strip is used to limit the bubbles, so that the scraping strip moves downward, stretching the elastic pad to generate greater elastic force, driving the scraping strip to squeeze the bubbles upward, thereby improving the scraping effect of the bubbles. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the external structure of an explosion-proof valve protection patch with a ventilation structure of the present invention;

[0024] Figure 2 This is a side view of an explosion-proof valve protection patch structure with a ventilation structure of the present invention;

[0025] Figure 3 It is a schematic diagram of the structure of the pressing device of the present invention;

[0026] Figure 4 It is a partial structural schematic diagram of the pressing device of the present invention;

[0027] Figure 5 It is a partial structural schematic diagram of the guide mechanism of the present invention;

[0028] Figure 6 It is a schematic diagram of the structure of the pressing mechanism of the present invention;

[0029] Figure 7 It is a partial structural schematic diagram of the pressing mechanism of the present invention;

[0030] Figure 8 This is a schematic diagram of the structure of the foam scraping mechanism of the present invention;

[0031] Fig. 9 It is a partial structural schematic diagram of the bubble scraping mechanism of the present invention;

[0032] Fig.10 Schematic diagram of the preparation process of the present invention.

[0033] In the figure: 1, breathable membrane; 2, base sheet; 3, release film; 4, frame; 5, guide mechanism; 6, pressing mechanism; 7, bubble scraping mechanism; 51, connecting plate; 52, inclined groove plate; 53, side plate; 54, counterweight; 55, film pressing rod; 56, guide rod; 57, gasket; 58, guide roller; 59, clamping roller; 601, fixed frame; 602, slide groove plate; 603, film pressing roller; 604, top plate; 605, pre-pressing roller; 606, horizontal gasket; 607, inclined gasket; 608, fixed rod; 609, slide rod; 610, spring; 611, pressing roller; 71, connecting frame; 72, heightening plate; 73, convex strip plate; 74, bubble scraping strip; 75, fixed plate; 76, rotating shaft; 77, bottom plate; 78, elastic pad; 79, bottom rod. DETAILED DESCRIPTION

[0034] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0035] The first embodiment, as Figure 1 to Figure 2 As shown, the present invention provides a technical solution: an explosion-proof valve protection patch with a ventilation structure, comprising:

[0036] A base sheet 2 is an annular sheet with good flexibility. One side of the base sheet 2 is coated with an adhesive layer. A breathable membrane 1 is installed on one side of the base sheet 2. The breathable membrane 1 and the base sheet 2 are fixed and sealed. A release film 3 is installed on the side of the base sheet 2 coated with the adhesive layer. The release film 3 is adhered to the base sheet 2 through the adhesive layer coated on the base sheet 2.

[0037] The second embodiment is based on the first embodiment. Fig.10 As shown, a preparation process of an explosion-proof valve protection patch with a ventilation structure consists of the following steps;

[0038] Step 1: Base treatment: clean the surface of the base material by cleaning equipment, remove the oil and impurities on the surface of the base material, and keep the surface of the base material clean and tidy;

[0039] Step 2: Glue coating and film solidification: coat one side of the base material with an adhesive material, and after coating, adhere the surface of the base material to the breathable film 1, and then heat and solidify the adhesive material to bond and fix the breathable film 1 to the base sheet 2;

[0040] Step 3: Adhesive layer lamination: the other side of the base material is coated with the adhesive layer material required for lamination, and after the adhesive layer material is coated, the release film 3 is laminated to the base material using the adhesive layer material through a laminating device;

[0041] Step 4: shaping and cutting. After the three layers of material are fixed and attached, the material is shaped and cut by cutting equipment into the required shape to form a single protective patch.

[0042] The third embodiment is based on the first and second embodiments. Figures 3 to 9 As shown, the pressing equipment in step 3 includes:

[0043] A frame 4, a pressing mechanism 6 is fixedly installed on the top of the frame 4, a guiding mechanism 5 is fixedly installed on one side of the top of the pressing mechanism 6, and a bubble scraping mechanism 7 is fixedly installed on the other side of the top of the pressing mechanism 6;

[0044] Wherein, the pressing mechanism 6 includes a fixed frame 601, which is fixedly installed on the top of the frame body 4, and a slide plate 602 is fixedly installed at the center position of both sides of the fixed frame 601, an empty groove is opened at the center position of the top of the outer side of the slide plate 602, and a horizontal slide groove and an inclined slide groove are opened at the bottom of the outer side of the slide plate 602. The horizontal slide groove is located on the side of the outer side of the slide plate 602 close to the guide mechanism 5, and the inclined slide groove is located on the side of the outer side of the slide plate 602 close to the bubble scraping mechanism 7, and the inclined slide groove is inclined from top to bottom to the outside, and a fixed rod 608 is slidably installed at the empty groove of the slide plate 602, and enters the gap between the pre-pressing roller 605 and the film pressing roller 603 together with the base sheet 2 and the release film 3 after the air permeable membrane 1 is cured, and is uniformly provided on the surface of the pre-pressing roller 605. The arc-shaped convex strips are arranged under the joint action of the spring 610 and the transverse gasket ring 606, which squeeze the passing material, so that the film pressing roller 603 and the pre-pressing roller 605 are under the action of contact pressure, and the arc-shaped convex strips on the surface of the pre-pressing roller 605 intermittently press the release film 3 and the glue-coated surface of the base sheet 2, so that the release film 3 and the glue-coated surface of the base sheet 2 are pre-pressed, and the film pressing roller 603 is rotatably installed at the center position of the outer side of the fixed rod 608, and the pre-pressing roller 605 is slidably installed at the transverse groove of the slide plate 602, and the transverse gasket rings 606 are installed at the transverse groove of the slide plate 602, and the end of the transverse gasket ring 606 close to the pre-pressing roller 605 is in contact with the two ends of the outer side of the pre-pressing roller 605, and the outer side of the pre-pressing roller 605 is evenly provided with arc-shaped convex strips.

[0045] The top of the slide plate 602 is fixedly installed with a top plate 604, the bottom of the top plate 604 is fixedly installed with a slide rod 609, the slide rod 609 is symmetrically installed along the center position of the axis of the top plate 604, the two ends of the fixed rod 608 are provided with rod holes, the fixed rod 608 is slidably adapted to the outer side of the slide rod 609 through the rod holes, the bottom of the top plate 604 is fixedly installed with a spring 610, the inclined slide of the slide plate 602 is slidably installed with a pressing roller 611, and the inclined slide of the slide plate 602 is installed with an inclined gasket 611. 07. The pre-laminated material enters the gap between the lamination roller 611 and the film pressing roller 603. The lamination roller 611 is pushed by the inclined pad ring 607 in the inclined slide groove to apply pressure to the material obliquely upward, making the material bend in an arc shape. At the same time, the film pressing roller 603 is cooperated to press the base sheet 2 and the release film 3. The release film 3 is bonded to the base sheet 2 through the colloid coated on the base sheet 2. The end of the inclined pad ring 607 close to the lamination roller 611 is in contact with the two ends on the outside of the lamination roller 611.

[0046] The guide mechanism 5 includes a connecting plate 51, which is symmetrically installed along the center position of the axis of the fixed frame 601, and an inclined groove plate 52 is fixedly installed on the top of the connecting plate 51. The release film 3 passes through the bottom of the guide roller 58 and enters the gap between the clamping roller 59 and the guide roller 58. At the same time, during the passing process, the spiral arc convex strips on the outside of the clamping roller 59 and the guide roller 58 contact the two sides of the release film 3. In the process of the release film 3 passing through the gap, the spiral arc convex strips are used to contact the release film 3. At the same time, the clamping roller 59 approaches the guide roller 58 under the elastic force of the gasket 57 to clamp the release film 3. An inclined groove is provided on the outside of the inclined groove plate 52, and a gasket 57 is installed in the inclined groove of the inclined groove plate 52. A side plate 53 is fixedly installed on one side of the top of the connecting plate 51 close to the pressing mechanism 6. A guide roller 58 and a clamping roller 59 are installed between the connecting plates 51. Both ends of the guide roller 58 contact the connecting plate The inner wall of the connecting plate 51 is rotatably connected, and the two ends of the clamping roller 59 are slidably adapted to the inclined groove of the inclined groove plate 52, and the outer sides of the clamping roller 59 and the guide roller 58 are provided with spiral arc convex strips, and the top of the outer side of the side plate 53 is provided with a rod groove, and the bottom of the opposite surface of the side plate 53 is rotatably installed with a guide rod 56. After the release film 3 passes through the gap, it passes through the top of the clamping roller 59 and passes through the bottom of the guide rod 56. The cured material of the base sheet 2 and the breathable membrane 1 passes through the bottom of the film pressing rod 55, and the gravity of the counterweight block 54 acts on the surface of the breathable membrane 1 through the film pressing rod 55. In the process of passing through, the release film 3 is separated from the glue-coated surface of the base sheet 2 by the guide rod 56. Before entering the laminating mechanism 6, the release film 3 is not in contact with the glue-coated surface of the base sheet 2. The film pressing rod 55 is slidably installed at the rod groove of the side plate 53, and the two ends of the film pressing rod 55 are fixedly installed with counterweight blocks 54.

[0047] The scraping mechanism 7 includes a connecting frame 71, a heightening plate 72 is fixedly installed on the side of the top of the connecting frame 71 away from the guide mechanism 5, a fixing plate 75 is fixedly installed on the top of the heightening plate 72, a convex strip plate 73 is fixedly installed on the bottom of the fixing plate 75, an axial groove is provided at the bottom of the convex strip plate 73 close to the pressing mechanism 6, and a rotating shaft 76 is rotatably installed at the axial groove of the convex strip plate 73, passes through the pressing mechanism 6, and then enters the scraping mechanism 7, the material passes through the bottom of the convex strip plate 73 close to the pressing mechanism 6, and in the process of passing, the rotating shaft 76 is used to contact the material, and the friction between the material and the rotating shaft 76 is reduced by the rotation connection between the rotating shaft 76 and the inner wall of the convex strip plate 73, the bottom of the rotating shaft 76 is lower than the bottom of the convex strip plate 73, and the bottom of the convex strip plate 73 away from the guide mechanism 5 is an inclined surface inclined inward from top to bottom, and The side of the convex strip plate 73 away from the guide mechanism 5 is fixedly installed with an arc strip, and the inner wall of the connecting frame 71 is slidably installed with a bottom rod 79, and the bottom end of the bottom rod 79 is fixedly installed with a bottom plate 77, and an elastic pad 78 is fixedly installed between the top of the bottom plate 77 and the bottom of the connecting frame 71. The top of the bottom rod 79 is fixedly installed with a bubble scraper strip 74, and the material enters the gap between the convex strip plate 73 and the bubble scraper strip 74. In the process of passing through the gap, the elastic force of the elastic pad 78 makes the inclined surface of the bubble scraper strip 74 fit closely with the inclined surface of the convex strip plate 73, squeezing the passing material, so that the bubbles between the release film 3 and the base sheet 2 are squeezed out, and then the material passes through the convex strip position of the convex strip plate 73 and is wound and collected by the winding equipment. The side of the bubble scraper strip 74 close to the convex strip plate 73 is an inclined surface and fits closely with the inclined surface of the convex strip plate 73.

[0048] When in use, the material after the base sheet 2 and the breathable membrane 1 are solidified together is coated with glue, and after coating with glue, it is introduced into the laminating device together with the release film 3, so that the material first enters the guide mechanism 5, and is guided and positioned by the guide mechanism 5 to be transported to the laminating mechanism 6. After entering the laminating mechanism 6, the release film 3 and the base sheet 2 are bonded together through the coated glue layer. After lamination, they continue to pass through the bubble scraping mechanism 7 to scrape off the bubbles between the release film 3 and the base sheet 2, and finally pass through the bubble scraping mechanism 7 to be wound and collected by the winding device.

[0049] When the material is guided by the guide mechanism 5, the release film 3 passes through the bottom of the guide roller 58 and enters the gap between the clamping roller 59 and the guide roller 58. At the same time, during the passing process, the spiral arc convex strips on the outside of the clamping roller 59 and the guide roller 58 contact the two sides of the release film 3. When the release film 3 passes through the gap, the spiral arc convex strips contact the release film 3. At the same time, the clamping roller 59 approaches the guide roller 58 under the elastic force of the gasket ring 57, and the release film 3 is pressed. The release film 3 passes through the gap and then goes out from the top of the clamping roller 59 and passes through the bottom of the guide rod 56. The cured material of the base sheet 2 and the breathable membrane 1 passes through the bottom of the film pressing rod 55. The gravity of the counterweight block 54 acts on the surface of the breathable membrane 1 through the film pressing rod 55. During the passing process, the release film 3 is separated from the glue-coated surface of the base sheet 2 by the guide rod 56. Before entering the laminating mechanism 6, the release film 3 and the glue-coated surface of the base sheet 2 are not in contact with each other.

[0050] When the material enters the laminating mechanism 6, it enters the gap between the pre-pressing roller 605 and the laminating roller 603 together with the cured base sheet 2 and the release film 3 of the breathable film 1. The arc-shaped convex strips evenly arranged on the surface of the pre-pressing roller 605 squeeze the material passing through under the joint action of the spring 610 and the horizontal pad ring 606, so that the release film 3 and the adhesive surface of the base sheet 2 are pressed together by the arc-shaped convex strips on the surface of the pre-pressing roller 605 under the action of the contact pressure. The lamination roller 603 is used to press the release film 3 and the adhesive coated surface of the base sheet 2 at intervals, and the pre-laminated material enters the gap between the lamination roller 611 and the film pressing roller 603. The lamination roller 611 is pushed by the inclined pad ring 607 in the inclined slide groove to press the material obliquely upward to make the material bend in an arc shape. At the same time, the film pressing roller 603 is used to press the base sheet 2 and the release film 3, and the release film 3 is bonded to the base sheet 2 through the colloid coated on the base sheet 2.

[0051] After the material is pressed, it passes through the pressing mechanism 6 and then enters the scraping mechanism 7. The material passes through the bottom of the convex plate 73 close to the pressing mechanism 6. During the penetration process, the rotating shaft 76 is used to contact the material. The rotating shaft 76 is connected to the inner wall of the convex plate 73 to reduce the friction between the material and the material. Then the material enters the gap between the convex plate 73 and the scraping strip 74. During the process of passing through the gap, the elastic force of the elastic pad 78 makes the inclined surface of the scraping strip 74 fit tightly with the inclined surface of the convex plate 73, squeezing the passed material, so that the bubbles between the release film 3 and the base sheet 2 are squeezed out, and then the material passes through the convex position of the convex plate 73 and is wound and collected by the winding equipment.

[0052] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A pressing device for preparing an explosion-proof valve protective patch with a ventilation structure, comprising: A frame (4), a pressing mechanism (6) being fixedly mounted on the top of the frame (4), a guiding mechanism (5) being fixedly mounted on one side of the top of the pressing mechanism (6), and a foam scraping mechanism (7) being fixedly mounted on the other side of the top of the pressing mechanism (6); The pressing mechanism (6) comprises a fixed frame (601), the fixed frame (601) is fixedly mounted on the top of the frame (4), and a slide plate (602) is fixedly mounted at the center position of both sides of the fixed frame (601), an empty groove is provided at the center position of the top of the outer side of the slide plate (602), and a horizontal slide groove and an inclined slide groove are provided at the bottom of the outer side of the slide plate (602), the horizontal slide groove is located on the side of the outer side of the slide plate (602) close to the guide mechanism (5), the inclined slide groove is located on the side of the outer side of the slide plate (602) close to the bubble scraping mechanism (7), and the inclined slide groove is provided on the side of the outer side of the slide plate (602) close to the bubble scraping mechanism (7). The groove is inclined outward from top to bottom, a fixed rod (608) is slidably installed at the empty groove of the slide groove plate (602), a film pressing roller (603) is rotatably installed at the center position of the outer side of the fixed rod (608), a pre-pressing roller (605) is slidably installed at the transverse slide groove of the slide groove plate (602), and transverse gaskets (606) are installed at the transverse slide grooves of the slide groove plate (602), one end of the transverse gasket (606) close to the pre-pressing roller (605) contacts the two ends of the outer side of the pre-pressing roller (605), and the outer side of the pre-pressing roller (605) is evenly provided with arc-shaped convex strips; The bubble scraping mechanism (7) comprises a connecting frame (71), a heightening plate (72) being fixedly mounted on a side of the top of the connecting frame (71) away from the guide mechanism (5), a fixing plate (75) being fixedly mounted on the top of the heightening plate (72), and a convex strip plate (73) being fixedly mounted on the bottom of the fixing plate (75); An axis groove is formed at the bottom of the convex strip plate (73) on the side close to the pressing mechanism (6), and a rotating shaft (76) is rotatably mounted at the axis groove of the convex strip plate (73), the bottom of the rotating shaft (76) is lower than the bottom of the convex strip plate (73), the bottom of the convex strip plate (73) on the side away from the guide mechanism (5) is an inclined surface inclined inward from top to bottom, and an arc strip is fixedly mounted on the side of the convex strip plate (73) away from the guide mechanism (5); A bottom rod (79) is slidably mounted on the inner wall of the connecting frame (71); a bottom plate (77) is fixedly mounted on the bottom end of the bottom rod (79); an elastic pad (78) is fixedly mounted between the top of the bottom plate (77) and the bottom of the connecting frame (71); a bubble scraping strip (74) is fixedly mounted on the top of the bottom rod (79); a side of the bubble scraping strip (74) close to the convex strip plate (73) is an inclined surface and is tightly fitted with the inclined surface of the convex strip plate (73).

2. The pressing device for preparing an explosion-proof valve protective patch with a ventilation structure according to claim 1, characterized in that: A top plate (604) is fixedly installed on the top of the slide plate (602), a sliding rod (609) is fixedly installed on the bottom of the top plate (604), and the sliding rod (609) is symmetrically installed along the center position of the axis of the top plate (604). Rod holes are opened at both ends of the fixed rod (608), and the fixed rod (608) is slidably adapted to the outer side of the sliding rod (609) through the rod holes. A spring (610) is fixedly installed on the bottom of the top plate (604), and a pressing roller (611) is slidably installed at the inclined slide of the slide plate (602). An inclined gasket (607) is installed at the inclined slide of the slide plate (602), and one end of the inclined gasket (607) close to the pressing roller (611) contacts the two ends of the outer side of the pressing roller (611).

3. The pressing device for preparing an explosion-proof valve protective patch with a ventilation structure according to claim 1, characterized in that: The guide mechanism (5) comprises a connecting plate (51), the connecting plate (51) being symmetrically mounted along the central position of the axis of the fixed frame (601), and a chute plate (52) being fixedly mounted on the top of each of the connecting plates (51), a chute plate (52) being provided with a chute on the outside of each of the chute plates (52), a gasket (57) being mounted in the chute of each of the chute plates (52), and a side plate (53) being fixedly mounted on one side of the top of each of the connecting plates (51) close to the pressing mechanism (6).

4. The pressing device for preparing an explosion-proof valve protective patch with a ventilation structure according to claim 3, characterized in that: A guide roller (58) and a clamping roller (59) are installed between the connecting plates (51); both ends of the guide roller (58) are rotatably connected to the inner wall of the connecting plate (51); both ends of the clamping roller (59) are slidably fitted to the inclined groove of the inclined groove plate (52); and the outer sides of the clamping roller (59) and the guide roller (58) are both provided with spiral arc-shaped convex strips.

5. The pressing device for preparing an explosion-proof valve protective patch with a ventilation structure according to claim 3, characterized in that: The top of the outer side of the side plate (53) is provided with a rod groove, and the bottom of the opposite surface of the side plate (53) is rotatably mounted with a guide rod (56), and a film pressing rod (55) is slidably mounted at the rod groove of the side plate (53), and counterweight blocks (54) are fixedly mounted at both ends of the film pressing rod (55).

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