Metal valve double-face one-time vulcanization forming device

Abstract

The invention relates to the technical field of metal valve vulcanization processing, in particular to a metal valve double-face one-time vulcanization forming device which comprises an upper die plate, a middle die plate and a lower die plate which are sequentially placed in the Y direction and used for vulcanization forming processing of a metal valve, and positioning guide columns used for guaranteeing matching precision are arranged among the upper die plate, the middle die plate and the lower die plate. According to the mold, a traditional matching mode of the upper mold plate and the lower mold plate is omitted, the matching mode of the upper mold plate, the middle mold plate and the lower mold plate is adopted, the upper mold plate and the lower mold plate are each provided with a glue overflowing groove, smooth overflowing of residual glue can be achieved, the height of the rubber molded surface of the metal valve meets the technical requirement, and the quality stability of the vulcanized molded surface is improved; meanwhile, the independently-arranged middle mold plate is adopted, filling of the metal valve is facilitated, after vulcanization operation is completed, the vulcanized metal valve is located at the position of the middle mold plate, and after the upper mold plate and the lower mold plate are detached, part taking operation of the metal valve can be rapidly completed above or below the middle mold plate.

Description

Technical Field

[0001] The present invention relates to the technical field of vulcanization processing of metal valves, and in particular to a device for one-time double-sided vulcanization molding of metal valves. Background Art

[0002] Metal valves need to be vulcanized with rubber on both the upper and lower sides for use in sealing the air flow switch of a certain type of aircraft control system. The double-sided vulcanization molding of this metal valve requires one-time completion and does not allow the use of a step-by-step molding method for vulcanization processing. The traditional method for one-time double-sided vulcanization molding of metal valves is to use a bar stock to machine a lower template cavity, then place the vulcanized rubber on the lower end face and the metal valve into the mold cavity of the lower template, place the rubber into the cavity of the upper end face metal valve, place the upper template above the metal valve, complete the closing of the upper and lower templates, and place them into the vulcanization equipment for vulcanization operations, finally completing the double-sided vulcanization molding processing of the metal valve. Since the vulcanization molding processing of the metal valve is completed by the cooperation of the upper and lower templates, it is difficult to remove the vulcanized metal valve, and at the same time, an overflow groove cannot be set on the lower template, resulting in the inability of the excess glue to overflow, the height of the vulcanized rubber surface exceeding the tolerance, and at the same time, due to the need to ensure the surface roughness of the surface, the form of removing the glue cannot be used to reduce its surface height, resulting in the unqualified products of the vulcanized metal valve, and multiple vulcanization operations need to be repeated. It is necessary to screen out the finished products that meet the technical requirements from the vulcanized metal valves, resulting in a low sulfur qualification rate of the metal valve and a relatively long product delivery cycle, which is not conducive to the improvement of production efficiency. Summary of the Invention

[0003] In order to solve the above problems, the present invention proposes a device for one-time double-sided vulcanization molding of metal valves.

[0004] A device for one-time double-sided vulcanization molding of metal valves includes an upper template, a middle template, and a lower template that are placed in the Y-direction sequence for vulcanization molding processing of metal valves. Positioning guide columns for ensuring the fitting accuracy are provided between the upper template, the middle template, and the lower template, and the middle template is used to place the metal valve.

[0005] An upper end face one, a lower end face one, a cylindrical bottom face one, and a cylindrical surface one for cooperating with the positioning guide column are provided on the upper template. The lower end face one is attached to the middle template, and overflow grooves with a semi-circular cross-section are provided on both the upper template and the lower template.

[0006] The beneficial effects of the present invention are:

[0007] The present invention cancels the traditional cooperation mode of upper and lower templates, adopts the cooperation mode of upper, middle and lower templates, and sets overflow grooves on both the upper and lower templates, which can realize the smooth overflow of surplus glue, make the height of the rubber surface of the metal valve meet the technical requirements, and improve the quality stability of the vulcanized surface. At the same time, an independently arranged middle template is adopted, which is convenient for filling the metal valve. After the vulcanization operation is completed, the vulcanized metal valve is located at the position of the middle template. After the upper and lower templates are disassembled, the picking operation of the metal valve can be quickly completed from above or below the middle template. The present invention sets 9 cavities, and the upper and lower double-sided vulcanization forming processing of 9 metal valves can be completed in one vulcanization, greatly improving the double-sided one-time vulcanization forming efficiency of the metal valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The present invention will be further described below with reference to the drawings and embodiments.

[0009] Figure 1 Structural schematic diagram of the metal valve product of the present invention Figure 1 ;

[0010] Figure 2 Structural schematic diagram of the metal valve product of the present invention Figure 2 ;

[0011] Figure 3 Front view structural schematic diagram of the present invention;

[0012] Figure 4 Three-dimensional structural schematic diagram of the present invention;

[0013] Figure 5 Front view structural schematic diagram of the upper template of the present invention;

[0014] Figure 6 Side view structural schematic diagram of the upper template of the present invention;

[0015] Figure 7 Of the present invention Figure 5 I partial enlarged structural schematic diagram;

[0016] Figure 8 Front view structural schematic diagram of the middle template of the present invention;

[0017] Figure 9 Top view structural schematic diagram of the middle template of the present invention;

[0018] Figure 10 Front view structural schematic diagram of the lower template of the present invention;

[0019] Figure 11 Top view structural schematic diagram of the lower template of the present invention;

[0020] Figure 12 Of the present invention Figure 10Schematic diagram of the enlarged partial structure of II;

[0021] Figure 13 This is the front view structural schematic diagram of the positioning guide post of the present invention.

[0022] In the figure, 1 is the upper template; 2 is the middle template; 3 is the lower template; 4 is the positioning guide post; 101 is the first upper end face; 102 is the first lower end face; 103 is the first cylindrical bottom surface; 104 is the first cylindrical surface; 201 is the second upper end face; 202 is the second lower end face; 203 is the through hole; 204 is the second cylindrical surface; 301 is the third lower end face; 302 is the third upper end face; 303 is the third cylindrical bottom surface; 304 is the third cylindrical surface; 401 is the fourth lower end face; 402 is the fourth cylindrical surface; 403 is the fourth cylindrical surface; 404 is the end face. Detailed implementation manners

[0023] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below.

[0024] As Figures 1 to 13 shown, a double-sided one-time vulcanization forming device for a metal valve includes an upper template 1, a middle template 2, and a lower template 3 that are arranged in the Y direction sequence for the vulcanization forming process of the metal valve. A positioning guide post 4 for ensuring the fitting accuracy is provided between the upper template 1, the middle template 2, and the lower template 3. The middle template is used to place the metal valve. The independent setting of the middle template simplifies and facilitates the filling and part-taking operations. The multi-cavity setting meets the requirements of mass production and improves the operation efficiency.

[0025] Nine cavities are provided on each of the upper template 1, the middle template 2, and the lower template 3. One-time vulcanization can complete the double-sided vulcanization forming process of 9 metal valves, greatly improving the double-sided one-time vulcanization forming efficiency of the metal valve.

[0026] Figure 1 In the figure, the reference numeral a is the rubber surface.

[0027] The upper template 1 is provided with a first upper end face 101, a first lower end face 102, a first cylindrical bottom surface 103, and a first cylindrical surface 104 that cooperates with the positioning guide post 4. The first lower end face 102 is in contact with the middle template 2. Overflow grooves b with a semi-circular cross-section are provided on both the upper template 1 and the lower template 3.

[0028] The present invention cancels the traditional cooperation mode of the upper and lower templates and adopts the cooperation mode of the upper, middle, and lower templates. Overflow grooves b with a semi-circular cross-section are provided on both the upper and lower templates, which can achieve the smooth overflow of the surplus glue, making the height of the rubber surface of the metal valve meet the technical requirements and improving the quality stability of the vulcanized surface.

[0029] The parallelism deviation between the upper end face 101 and the lower end face 101 is not more than 0.02.

[0030] The dimension that the bottom surface 103 of the cylinder is lower than the lower end face 102 is 0.2 mm.

[0031] The cylindrical surface 104 has a clearance fit of 0.02 mm with the positioning guide post 4, and the coaxiality deviation is not more than 0.02 mm.

[0032] On the middle template 2, there are an upper end face 201 that fits with the lower end face 102 of the upper template 1, a lower end face 202 that fits with the lower template 3, a through hole 203 for installing the metal valve assembly, and a cylindrical surface 204 that cooperates with the positioning guide post 4. Using an independently arranged middle template facilitates the filling of the metal valve. After the vulcanization operation, the vulcanized metal valve is in the position of the middle template. After disassembling the upper and lower templates, the picking operation of the metal valve can be quickly completed from above or below the middle template.

[0033] The coaxiality deviation between the through hole 203 and the outer circle of the metal valve is not more than 0.03.

[0034] The cylindrical surface 204 has a clearance fit of 0.02 mm with the positioning guide post 4, and the coaxiality deviation is not more than 0.02 mm.

[0035] On the lower template 3, there are a lower end face 301, a bottom surface 303 of the cylinder, an upper end face 302 that fits with the lower end face 202 of the middle template 2, and a cylindrical surface 304 that cooperates with the positioning guide post 4.

[0036] The parallelism deviation between the lower end face 301 and the upper end face 302 is not more than 0.02.

[0037] The dimension that the bottom surface 303 of the cylinder is lower than the upper end face 302 is 0.2 mm.

[0038] The cylindrical surface 304 has a clearance fit of 0.02 mm with the positioning guide post 4, and the coaxiality deviation is not more than 0.02 mm.

[0039] On the positioning guide post 4, there are a lower end face 401 that is flush with the lower end face 301 of the lower template 3, a cylindrical surface 402 that has an interference fit with the cylindrical surface 304 of the lower template 3, cylindrical surfaces 403 that have a clearance fit of 0.02 mm with the cylindrical surface 104 of the upper template 1 and the cylindrical surface 204 of the middle template 2 respectively, and an end face 404 with a dimension of 2 mm lower than the upper end face 101 of the upper template 1. The positioning guide post 4 is used to ensure the fitting accuracy of the upper, middle, and lower templates and reduce problems such as flash on the metal rubber pressing surface and dimensional deviation caused by poor fitting accuracy.

[0040] The coaxiality of the described cylindrical surface 1 - 104, cylindrical surface 2 - 204 and cylindrical surface 4 - 403 is out of tolerance by no more than 0.02 mm.

[0041] Implementation steps:

[0042] 1. First, install the positioning guide post 4 into the lower template 3 according to the drawing requirements, a total of 4 places. Assemble the middle template 2 according to the drawing requirements to ensure that the middle template 2 fits tightly with the lower template 3 without gaps. Assemble the upper template 1 according to the drawing requirements to ensure that the upper template 1 fits tightly with the middle template 2 without gaps. Finally, complete the assembly of the device, and require that the device can be opened flexibly without jamming.

[0043] 2. After completing the assembly of the double-sided primary vulcanization forming device for the metal valve, open the upper template according to the drawing requirements. Fill the lower end surface of the metal valve with the rubber required for vulcanization and place it at the corresponding cavity position of the middle template 2. This cavity can complete the limit fixation of the metal valve. Immediately fill the rubber compound required for vulcanizing the upper end surface of the metal valve, and then close the upper template 1 to complete the production operation preparation before vulcanization.

[0044] 3. Place the assembled double-sided vulcanization device for the metal valve into the vulcanization equipment for heating, and finally complete the operation of double-sided vulcanization forming of the metal valve. The 9 cavities set in this device can complete the upper and lower double-sided vulcanization forming processing of 9 metal valves at a time, greatly improving the efficiency of double-sided primary vulcanization forming of the metal valve.

[0045] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A double-sided one-time vulcanization forming device for a metal valve, characterized in that: It includes an upper template (1), a middle template (2), and a lower template (3) arranged in the Y - direction sequence for the vulcanization molding process of a metal valve. Positioning guide posts (4) for ensuring the fitting accuracy are arranged between the upper template (1), the middle template (2), and the lower template (3). The middle template is used to place the metal valve.

2. The double-sided one-time vulcanization forming device for a metal valve according to claim 1, wherein: On the upper template (1), there are an upper end face one (101), a lower end face one (102), a cylindrical bottom face one (103), and a cylindrical surface one (104) that cooperates with the positioning guide post (4). The lower end face one (102) is in contact with the middle template (2). Glue overflow grooves (b) with a semi - circular cross - section are arranged on both the upper template (1) and the lower template (3).

3. A double-sided one-time vulcanization forming device for a metal valve, characterized in that: The parallelism tolerance between the upper end face one (101) and the lower end face one (102) is not more than 0.

02.

4. A double-sided one-time vulcanization forming device for a metal valve, characterized in that: The cylindrical bottom face one (103) is 0.2 mm lower than the lower end face one (102).

5. A double-sided one-time vulcanization forming device for a metal valve, characterized in that: On the middle template (2), there are an upper end face two (201) that is in contact with the lower end face one (102) of the upper template (1), a lower end face two (202) that is in contact with the lower template (3), a through - hole (203) for installing the metal valve assembly, and a cylindrical surface two (204) that cooperates with the positioning guide post (4).

6. A double-sided one-time vulcanization forming device for a metal valve, characterized in that: The coaxiality tolerance between the through - hole (203) and the outer circle of the metal valve is not more than 0.

03.

7. A double-sided one-time vulcanization forming device for a metal valve, characterized in that: The cylindrical surface two (204) and the positioning guide post (4) maintain a clearance fit of 0.02 mm, and the coaxiality tolerance is not more than 0.02 mm.

8. A double-sided one-time vulcanization forming device for a metal valve, characterized in that: On the lower template (3), there are a lower end face three (301), a cylindrical bottom face three (303), an upper end face three (302) that is in contact with the lower end face two (202) of the middle template (2), and a cylindrical surface three (304) that cooperates with the positioning guide post (4).

9. A double-sided one-time vulcanization forming device for a metal valve, characterized in that: The parallelism tolerance between the lower end face three (301) and the upper end face three (302) is not more than 0.

02.

10. A double-sided one-time vulcanization forming device for a metal valve, characterized in that: On the positioning guide post (4), there are a lower end face four (401) that is flush with the lower end face three (301) of the lower template (3), a cylindrical surface four (402) that has an interference fit with the cylindrical surface three (304) of the lower template (3), cylindrical surfaces four (403) that maintain a clearance fit of 0.02 mm with the cylindrical surface one (104) of the upper template (1) and the cylindrical surface two (204) of the middle template (2) respectively, and an end face (404) that is 2 mm lower than the upper end face one (101) of the upper template (1).

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