Airplane rubber protective sleeve mold

Abstract

The utility model belongs to the technical field of molds, and relates to an airplane rubber protective sleeve mold which comprises a guide pin, an upper mandrel, a mold plate set, a lower mandrel and a core. The two sets of guide pins are inserted into the two sides of the interior of the template set correspondingly, and the upper core shaft and the lower core shaft are both arranged in the center of the template set. The two groups of cores are symmetrically arranged on the two sides of the top of the template group; the template group sequentially comprises an upper template, a thin middle template, a thick middle template and a lower template from top to bottom; the parting surfaces of the rubber protective sleeve are arranged, the corresponding mold is divided into the upper mold plate, the thin middle mold plate, the thick middle mold plate and the lower mold plate according to the divided parting surfaces, different positions of the rubber protective sleeve are formed by all the parts respectively, each independent mold plate is simple in structure, product defects cannot be generated after pressing, and the production efficiency is improved. And the supports of all the parts are fixed through the guide pins, demolding of all the mold plates can be completed by taking down the guide pins, and use is easy and convenient.

Description

Technical Field

[0001] The present application belongs to the field of mold technology, and in particular relates to an aircraft rubber protective cover mold. Background Art

[0002] Rubber protective cover Figure 1 The rubber protective cover is an elliptical cylindrical part with a triangular outer edge of 1.6mm thickness at the bottom, and a semi-circular ring structure of 3.6mm thickness on the upper end of the triangular outer edge. There is an arc-shaped notch in one corner of the triangular outer edge with a height of 4mm. There are two circular holes in the other two corners. There is an elliptical outer edge on the upper part of the rubber protective cover. The current rubber protective cover mold uses a middle template to form a triangular outer edge, a semi-circular ring structure, and an arc-shaped notch, and the structure is complex. As a result, the product after mold pressing will have product defects such as glue shortage, thick burrs, blistering, and spongy pores, and the product is difficult to demold from the mold. Therefore, it is necessary to solve the problems of product defects and demolding difficulties after mold pressing. Utility Model Content

[0003] The purpose of this application is to provide an aircraft rubber protective cover mold to solve the current problems of product defects and demoulding difficulties after mold pressing.

[0004] The technical solution of the present application is: a mold for an aircraft rubber protective cover, in which a first parting surface and a second parting surface are set on the rubber protective cover to divide the rubber protective cover into three parts: above the first parting surface, between the first parting surface and the second parting surface, and below the second parting surface; it includes guide pins, an upper core shaft, a template group, a lower core shaft and a core; there are two groups of guide pins and they are respectively inserted on both sides of the interior of the template group, and the upper core shaft and the lower core shaft are both arranged at the center position of the template group for molding the inner hole of the rubber protective cover; there are two groups of cores and they are symmetrically arranged on both sides of the top of the template group for molding the two holes on the triangular outer edge of the rubber protective cover; the template group includes an upper template, a thin middle template, a thick middle template and a lower template from top to bottom, for molding the overall structure of the rubber protective cover; the upper template is arranged corresponding to the top of the first parting surface, the thin middle template and the thick middle template are arranged corresponding to the first parting surface and the second parting surface, and the lower template is arranged corresponding to the bottom of the second parting surface.

[0005] Preferably, the lower template is used to form the inner hole and elliptical outer edge of the rubber protective sleeve. There is a first guide pin hole on each side of the left and right sides of the lower template. Two groups of guide pins are installed in the two first guide pin holes with interference fit. The two groups of guide pins are arranged along the height direction of the rubber protective sleeve. The lower end of the guide pin is flush with the bottom surface of the lower template, and the middle part is gap-fitted with the upper template, the thin middle template, and the thick middle template; the middle of the upper surface of the lower template is a first waist-shaped hole, and a coaxial waist-shaped groove is provided on the outside of the first waist-shaped hole. The first glue flow groove of the waist-shaped interface is provided on the outside of the waist-shaped groove for glue pouring. The first waist-shaped hole, waist-shaped groove and first glue flow groove are arranged in a stepped manner; the lower core shaft is pressed into the lower end face of the lower template through the first waist-shaped hole until it is flush with the lower end face of the lower template. The left and right sides of the lower template are designed with prying openings and the first sulfur glue groove.

[0006] Preferably, the thick and medium template is a rectangular structure, and a second guide pin hole is opened on both the left and right sides of the thick and medium template. A second waist-shaped hole is opened in the middle part of the thick and medium template, and a runway-shaped groove is set on the outside of the second waist-shaped hole. A prying edge and a second glue flow groove are opened on the outside of the runway-shaped groove.

[0007] Preferably, the thin middle template is a rectangular structure, and a third guide pin hole is provided on both sides of the thin middle template. A special-shaped hole combining an elliptical hole and a circular hole is provided in the middle position of the thin middle template, and a triangular groove is provided on the outside of the special-shaped hole.

[0008] Preferably, the upper template is a rectangular structure, with fourth guide pin holes on the left and right sides of the upper template and an elliptical model hole in the middle. The upper core shaft is pressed into the elliptical model hole and the upper end face of the upper core shaft is flush with the upper template. The upper core shaft cooperates with the upper template to form the inner hole of the rubber protective cover; the upper template has edge holes symmetrically opened on both sides of the elliptical model hole, and there are two groups of cores, which are respectively installed in the two edge holes.

[0009] Preferably, the thickness of the lower template is 15mm, the thickness of the thick middle template is 14.5mm, the thickness of the thin middle template is 4.3mm, and the thickness of the upper template is 15mm; the template materials of the upper template, thin middle template, thick middle template and lower template are all made of 45# steel, and the heat treatment method is: HRC35-40, and the surface is chrome-plated.

[0010] The aircraft rubber protective cover mold of the present application is provided with a parting surface for the rubber protective cover, and the corresponding mold is divided into an upper template, a thin middle template, a thick middle template and a lower template according to the divided surface. Each part is respectively formed at a different position of the rubber protective cover. Each individual template has a simple structure and will not produce product defects after pressing. In addition, the brackets of each part are fixed by a guide pin, and the demolding between the templates can be completed by removing the guide pin. It is simple and convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions provided by this application, the following is a brief introduction to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of this application.

[0012] Figure 1 This is a schematic diagram of the parting surface structure of the rubber protective cover of this application;

[0013] Figure 2 This is the structural explosion diagram of the rubber protective cover after the parting surface of this application;

[0014] Figure 3 This is a cross-sectional view of the overall structure of the rubber protective cover mold of this application;

[0015] Figure 4 This is a structural diagram of the rubber protective cover mold of this application, highlighting the core position;

[0016] Figure 5 This is a schematic diagram of the template structure under this application;

[0017] Figure 6 This is a schematic diagram of the thick template structure of this application;

[0018] Figure 7 This is a schematic diagram of the template structure in this application book;

[0019] Figure 8 This is a schematic diagram of the template structure of this application;

[0020] Figure 9 This is a schematic diagram of the core structure of this application.

[0021] 1. Guide pin; 2. Upper mandrel; 3. Upper template; 4. Thin middle template; 5. Thick middle template; 6. Lower template; 7. Lower mandrel; 8. Core; 9. First waist-shaped hole; 10. First glue flow groove; 11. Second waist-shaped hole; 12. Runway-shaped groove; 13. Special-shaped hole; 14. Triangular groove; 15. Elliptical model hole; 16. Edge hole. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] A mold for an aircraft rubber protective cover. In order to ensure the molding and demoulding of the rubber parts, the design of the parting surface is considered when designing the mold. Figure 1-Figure 2 According to its structural characteristics, the rubber protective cover is provided with a first parting surface and a second parting surface to divide it into three parts, namely, above the first parting surface, between the first parting surface and the second parting surface, and below the second parting surface. The first parting surface is Figure 1 As shown in ①, the second parting surface is Figure 1 As shown in ②, the first parting surface is parted along the bottom surface of the elliptical outer edge, and the second parting surface is parted along the upper surface of the arc-shaped notch.

[0024] Combine Figure 3-Figure 4 , including guide pins 1, upper mandrel 2, template group, lower mandrel 7 and core 8. There are two groups of guide pins 1, which are inserted on both sides of the template group. The upper mandrel 2 and lower mandrel 7 are both located in the center of the template group and are used to form the inner hole of the rubber protective cover. There are two groups of core 8, which are symmetrically located on both sides of the top of the template group and are used to form the two holes on the triangular outer edge of the rubber protective cover. The template group includes an upper template 3, a thin middle template 4, a thick middle template 5 and a lower template 6 from top to bottom, which are used to form the overall structure of the rubber protective cover. The upper template 3 is set above the first parting surface, the thin middle template 4 and the thick middle template 5 are set between the first and second parting surfaces, and the lower template 6 is set below the second parting surface.

[0025] like Figure 5 The lower mold plate 6, used to form the inner hole and elliptical outer edge of the rubber protective sleeve, is located at the bottom of the entire mold. A first guide pin hole is located on each side of the lower mold plate 6. Two sets of guide pins 1 are installed in these first guide pin holes with an interference fit. Both sets of guide pins 1 are arranged along the height of the rubber protective sleeve. The lower ends of the guide pins 1 are flush with the bottom surface of the lower mold plate 6, and the middle portions have a clearance fit with the upper mold plate 3, the thin middle mold plate 4, and the thick middle mold plate 5.

[0026] In the middle of the upper surface of the lower template 6 is a first waist-shaped hole 9, and a coaxial waist-shaped groove is opened on the outside of the first waist-shaped hole 9. A waist-shaped first glue flow groove 10 is set on the outside of the waist-shaped groove for glue liquid injection. The first waist-shaped hole 9, the waist-shaped groove and the first glue flow groove 10 are arranged in a stepped manner.

[0027] The lower core shaft 7 is pressed into the lower end surface of the lower template 6 through the first waist-shaped hole until it is flush with the lower end surface of the lower template 6. The left and right sides of the lower template 6 are designed with prying openings and the first sulfur rubber groove for rubber vulcanization.

[0028] Preferably, the upper end of the guide pin 1 is provided with a chamfer to facilitate assembly.

[0029] Preferably, a φ6-diameter temperature measuring hole with a depth of 30 mm is provided at the front end of the lower template 6 for temperature measurement.

[0030] Preferably, the lower template 6 is a rectangular structure with a thickness of 15 mm, and the template material is 45# steel, heat treated to HRC35-40, and chrome-plated on the surface. The sizes of the two first guide pin holes are φ12H7 and φ10H7 respectively.

[0031] like Figure 6 The thick and medium template 5 is a rectangular structure. Second guide pin holes are provided on both sides of the thick and medium template 5. The second guide pin holes are correspondingly connected to the first guide pin holes. A second waist-shaped hole 11 is provided in the middle part of the thick and medium template 5. A runway-shaped groove 12 is provided on the outside of the second waist-shaped hole 11. A 3mm deep prying opening and a second glue flow groove are provided on the outside of the runway-shaped groove 12 for glue pouring.

[0032] Preferably, the thickness of the thick medium template 5 is 14.5 mm, the template material is 45# steel, the heat treatment method is: HRC35-40, and the surface is chrome-plated. The sizes of the two second guide pin holes are φ12H7 and φ10H7 respectively.

[0033] like Figure 7 The thin middle template 4 is a rectangular structure, used to form the triangular outer edge and arc-shaped notch of the rubber protective sleeve, as well as the lower semi-circular ring structure and outer cylindrical structure. Third guide pin holes are provided on both the left and right sides of the thin middle template 4, correspondingly connected to the second guide pin holes. A special-shaped hole 13, combining an elliptical hole and an annular hole, is provided in the middle of the thin middle template 4. A triangular groove 14 is provided on the outside of the special-shaped hole 13, and a rounded transition is provided at the end of the special-shaped hole 13.

[0034] Preferably, the thickness of the thin middle template 4 is 4.3 mm, the template material is 45# steel, the heat treatment method is: HRC35-40, and the surface is chrome-plated. The sizes of the two third guide pin holes are φ12H7 and φ10H7 respectively.

[0035] like Figure 8The upper template 3 is a rectangular structure, used for molding the inner hole of the rubber protective plate. The upper template 3 has a fourth guide pin hole on the left and right sides, and an elliptical model hole 15 in the middle. The upper core shaft 2 is pressed into the elliptical model hole 15, and the upper end face of the upper core shaft 2 is flush with the upper template 3. The guide pin 1 is inserted into the first guide pin hole, the second guide pin hole, the third guide pin hole and the fourth guide pin hole to fix the upper template 3, the thin middle template 4, the thick middle template 5 and the lower template 6. The upper core shaft 2 cooperates with the upper template 3 to mold the inner hole of the rubber protective cover; the upper template 3 has edge holes 16 symmetrically opened on both sides of the elliptical model hole 15. There are two groups of cores 8, which are respectively installed in the two edge holes 16 to mold the two holes on the triangular outer edge of the rubber protective cover, such as Figure 9 .

[0036] Preferably, the upper template 3 is 15 mm thick, made of 45# steel, heat-treated to HRC 35-40, and chrome-plated. The upper mandrel 2 has an interference fit with the elliptical mold hole 15, with a tolerance of H7 / r6. The upper mandrel 2 is 29 mm thick, and the core 8 has an interference fit with the edge hole 16. The dimensions of the two fourth guide pin holes are φ12H7 and φ10H7, respectively.

[0037] To sum up, by setting the parting surface of the rubber protective cover and splitting the corresponding mold into the upper template 3, the thin middle template 4, the thick middle template 5 and the lower template 6 according to the divided surface, each part is formed into different positions of the rubber protective cover. Each individual template has a simple structure and will not produce product defects after pressing. In addition, the brackets of each part are fixed by the guide pin 1. By removing the guide pin 1, the demolding between the templates can be completed. It is simple and convenient to use.

[0038] As a specific implementation, the steps of forming the rubber protective cover are also included, which are as follows:

[0039] Step 1: Roll the rubber material into thin sheets in an open rubber mixing mill and cut it into strips with a width of 5 mm and a length of 30 mm.

[0040] Step 2: Preheat the flat vulcanizing press.

[0041] Step 3: After assembling the lower template 6 and the thick middle template 5 through the guide pin 1, put the rubber strip into the thick middle mold cavity, and then install the thin middle template 4 and the upper template 3 according to the guide pin 1.

[0042] Step 4: Place the assembled mold on a flat vulcanizing press and heat for 40 minutes at a temperature of 151°C ± 2°C; the pressure gauge pressure is 11MPa to 1MPa.

[0043] Step 5: After completing step 4, remove the mold from the flat vulcanizer, take out the rubber part from the mold and place it to cool naturally.

[0044] Finally, it should be noted that the drawings of the embodiments disclosed in this utility model only involve structures related to the embodiments disclosed in this utility model. Other structures can refer to common designs. In the absence of conflicts, the same embodiment and different embodiments of the utility model can be combined with each other.

[0045] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An aircraft rubber protective cover mold, characterized in that: The first parting surface and the second parting surface are arranged on the rubber protective sleeve to divide the rubber protective sleeve into three parts: above the first parting surface, between the first parting surface and the second parting surface, and below the second parting surface; including guide pins (1), an upper core shaft (2), a template group, a lower core shaft (7) and a core (8); the guide pins (1) are in two groups and are respectively inserted on both sides of the interior of the template group, and the upper core shaft (2) and the lower core shaft (7) are both arranged at the center of the template group for molding the inner hole of the rubber protective sleeve; the core (8) is in two groups and is symmetrically arranged on both sides of the top of the template group for molding the two holes on the triangular outer edge of the rubber protective sleeve; the template group includes, from top to bottom, an upper template (3), a thin middle template (4), a thick middle template (5) and a lower template (6) for molding the overall structure of the rubber protective sleeve; The upper template (3) is arranged above the first parting surface, the thin middle template (4) and the thick middle template (5) are arranged between the first parting surface and the second parting surface, and the lower template (6) is arranged below the second parting surface.

2. The aircraft rubber protective cover mold according to claim 1, characterized in that: The lower template (6) is used to form the inner hole and the elliptical outer edge of the rubber protective sleeve. There is a first guide pin hole on each of the left and right sides of the lower template (6). Two groups of guide pins (1) are respectively installed in the two first guide pin holes with interference fit. The two groups of guide pins (1) are arranged along the height direction of the rubber protective sleeve. The lower end of the guide pin (1) is flush with the bottom surface of the lower template (6), and the middle part is clearance-fitted with the upper template (3), the thin middle template (4), and the thick middle template (5); the upper surface of the lower template (6) is The middle of the surface is a first waist-shaped hole (9), a coaxial waist-shaped groove is provided on the outside of the first waist-shaped hole (9), a waist-shaped first glue flow groove (10) is provided on the outside of the waist-shaped groove for glue liquid injection, and the first waist-shaped hole (9), the waist-shaped groove and the first glue flow groove (10) are arranged in a stepped manner; the lower core shaft (7) is pressed into the lower end face of the lower template (6) through the first waist-shaped hole until it is flush with the lower end face of the lower template (6), and the left and right sides of the lower template (6) are designed with a prying opening and a first sulfur glue groove.

3. The aircraft rubber protective cover mold according to claim 1, characterized in that: The thick middle template (5) is a rectangular structure, and second guide pin holes are provided on both the left and right sides of the thick middle template (5). A second waist-shaped hole (11) is provided in the middle of the thick middle template (5), and a runway-shaped groove (12) is provided on the outside of the second waist-shaped hole (11). A prying opening and a second glue flow groove are provided on the outside of the runway-shaped groove (12).

4. The aircraft rubber protective cover mold according to claim 1, characterized in that: The thin middle template (4) is a rectangular structure, and a third guide pin hole is provided on both the left and right sides of the thin middle template (4). A special-shaped hole (13) combining an elliptical hole and a circular hole is provided in the middle position of the thin middle template (4), and a triangular groove (14) is provided on the outside of the special-shaped hole (13).

5. The aircraft rubber protective cover mold according to claim 1, characterized in that: The upper template (3) is a rectangular structure. The left and right sides of the upper template (3) are provided with fourth guide pin holes, and the middle position is provided with an elliptical model hole (15). The upper core shaft (2) is pressed into the elliptical model hole (15) and the upper end surface of the upper core shaft (2) is flush with the upper template (3). The upper core shaft (2) and the upper template (3) cooperate to form the inner hole of the rubber protective sleeve; the upper template (3) is symmetrically provided with edge holes (16) on both sides of the elliptical model hole (15), and the core (8) has two groups and is respectively installed in the two edge holes (16).

6. The aircraft rubber protective cover mold according to claim 1, characterized in that: The thickness of the lower template (6) is 15 mm, the thickness of the thick middle template (5) is 14.5 mm, the thickness of the thin middle template (4) is 4.3 mm, and the thickness of the upper template (3) is 15 mm; the template materials of the upper template (3), the thin middle template (4), the thick middle template (5) and the lower template (6) are all 45# steel, and the heat treatment method is: HRC35-40, and the surface is chrome-plated.

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