Pressing die for producing sealing diaphragm

Abstract

The utility model relates to the technical field of diaphragm production, and discloses a pressing die for sealing diaphragm production, which comprises a working table, a die structure is arranged on the working table, a U-shaped frame is fixedly mounted on the working table, and a pressing structure is arranged on the U-shaped frame. According to the pressing mold for sealing diaphragm production, a preformed rubber material is placed in a cavity groove of the lower mold, a hydraulic cylinder is started through a PLC, the rubber material in the cavity groove is pressed through the upper mold, then a vacuum pump is started through the PLC, and the vacuum pump exhausts gas in the cavity groove through a first connecting pipe, a U-shaped pipe, an annular cavity and an exhaust groove; a multi-stage exhaust channel is formed by the annular cavity with the symmetric axis distributed up and down in a mirroring mode and the exhaust grooves, rubber materials can be prevented from overflowing and blocking, meanwhile, the inclination angle of the exhaust grooves ranges from 30 degrees to 45 degrees, and the exhaust grooves are consistent with the tangential direction of the contour of the cavity grooves, so that the gas flowing path can be increased, and gas can be exhausted rapidly.

Description

TECHNICAL FIELD

[0001] The utility model relates to diaphragm production technical field, concretely is a kind of pressing mould for sealed diaphragm production. BACKGROUND

[0002] Sealed diaphragm is widely used in automobile, medical treatment, aerospace and other fields, and its performance requires high precision, uniform thickness and no bubble defect.

[0003] Traditional pressing mould has the following problems: difficult demolding: diaphragm edge is thin and easy to stick cavity, and is easy to deform or tear during demolding; Low exhaust efficiency: gas in cavity is difficult to completely discharge, causing product bubble defect, therefore, we propose a kind of pressing mould for sealed diaphragm production to solve the above problems. UTILITY MODEL CONTENT

[0004] In view of the deficiencies of prior art, the utility model provides a kind of pressing mould for sealed diaphragm production, solve the problem mentioned in background art.

[0005] The utility model solves the technical scheme that the utility model adopts: a kind of pressing mould for sealed diaphragm production, including workbench, the workbench is provided with mould structure, the workbench is fixedly installed with U-shaped frame, the U-shaped frame is provided with pressing structure, the outer wall of the U-shaped frame is fixedly installed with PLC controller,

[0006] The mould structure is used to discharge gas between diaphragm and mould, and the pressing structure is used to press diaphragm and mould.

[0007] Further, the mould structure includes lower mould, the bottom of the lower mould is fixedly installed on the upper surface of workbench, the upper surface of the lower mould is provided with a plurality of cavity grooves annularly arranged, the upper surface of the lower mould is fixedly installed with sealing ring on one side of cavity groove, two annular cavities are provided in the lower mould, the two annular cavities are vertically symmetrical on the center line of the lower mould, the lower mould is further provided with exhaust groove communicated with annular cavity and cavity groove, the lower mould is further provided with U-shaped groove, the U-shaped groove is fixedly installed with U-shaped tube in the inside, the two ends of the U-shaped tube are communicated with annular cavities symmetrically above and below, the two ends of the U-shaped tube are movably installed with one-way valve, the middle end of the U-shaped tube is fixedly communicated with connecting pipe one, one end of the connecting pipe one extends to the outer wall of the lower mould, one end of the connecting pipe one is fixedly communicated with vacuum pump, the vacuum pump is fixedly installed on the outer wall of the lower mould.

[0008] Furthermore, the mold structure also includes two connecting grooves, which are symmetrically opened in the lower mold. The two ends of the connecting grooves are connected to the two annular cavities. An arc-shaped groove is opened in the lower mold between the two connecting grooves. A second connecting pipe is fixedly connected inside the arc-shaped groove. One end of the second connecting pipe extends to the outer wall of the lower mold. An air pump is fixedly connected to one end of the second connecting pipe. The air pump is fixedly installed on the outer wall of the lower mold.

[0009] Furthermore, the pressing structure includes a hydraulic cylinder, which is fixedly installed on the upper surface of the U-shaped frame. The output end of the hydraulic cylinder passes through the interior of the U-shaped frame. Several pressing plates are fixedly installed in a ring arrangement at the output end of the hydraulic cylinder. A sealing ring groove is opened on the lower surface of the pressing plate, and an upper mold is fixedly installed on the lower surface of the pressing plate.

[0010] Furthermore, the cavity has a trapezoidal cross-sectional shape, the exhaust grooves are arranged in a ring, the exhaust grooves have an inclination angle of 30 to 45 degrees, the size of the cavity is adapted to the size of the upper mold, and the size of the sealing ring groove is adapted to the size of the sealing ring.

[0011] Furthermore, the PLC controller is electrically connected to the hydraulic cylinder, the PLC controller is electrically connected to the air pump, the PLC controller is electrically connected to the vacuum pump, and the PLC controller is electrically connected to the check valve.

[0012] The beneficial effects of this utility model are:

[0013] 1. The pressing mold used in the production of this sealing diaphragm places the pre-formed rubber material in the lower mold cavity. The hydraulic cylinder is started by the PLC controller, which causes the upper mold to press the rubber material in the cavity. Then, the vacuum pump is started by the PLC controller. The vacuum pump discharges the gas in the cavity through the connecting pipe, U-shaped pipe, annular cavity and exhaust groove. The multi-stage exhaust channel formed by the annular cavity with its symmetrical upper and lower mirror distribution and several exhaust grooves can prevent the rubber material from overflowing and clogging. At the same time, the exhaust groove is inclined at an angle of 30 to 45 degrees, which is consistent with the tangent direction of the cavity contour. This can improve the gas flow path and enable the gas to be discharged quickly.

[0014] 2. The pressing mold used in the production of the sealing diaphragm sheet has the following functions: When it is necessary to demold the diaphragm sheet pressed into the cavity of the lower mold, the air pump is started by the PLC controller. The air pump inflates several exhaust grooves through the connecting pipe 2, the arc groove, and the annular cavity, so that the gas inside the exhaust grooves enters the cavity. The diaphragm sheet formed in the cavity is demolded by the flow of gas, so that the diaphragm sheet will not stick to the cavity. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a partial cross-sectional view of the structure of this utility model;

[0018] Figure 3 This is a cross-sectional view of the mold structure of this utility model;

[0019] Figure 4 This is a partial sectional view of the mold structure of this utility model;

[0020] Figure 5 This utility model Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0021] Figure 6 This utility model Figure 2 Enlarged schematic diagram of the structure at point B;

[0022] Figure 7 This utility model Figure 3 Enlarged schematic diagram of the structure at point C;

[0023] Figure 8 This utility model Figure 4 Enlarged schematic diagram of the structure at point D.

[0024] Explanation of reference numerals in the attached drawings: 1. Workbench; 2. Mold structure; 21. Lower mold; 22. Cavity groove; 23. Sealing ring; 24. Annular cavity; 25. Exhaust groove; 26. U-shaped groove; 27. U-shaped pipe; 28. One-way valve; 29. ​​Connecting pipe one; 210. Vacuum pump; 211. Connecting groove; 212. Arc groove; 213. Connecting pipe two; 214. Air pump; 3. U-shaped frame; 4. Pressing structure; 41. Hydraulic cylinder; 42. Pressing plate; 43. Sealing ring groove; 44. Upper mold; 5. PLC controller. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0026] Please see Figures 1-8 A pressing mold for producing sealing diaphragms includes a workbench 1, a mold structure 2 mounted on the workbench 1, a U-shaped frame 3 fixedly mounted on the workbench 1, a pressing structure 4 mounted on the U-shaped frame 3, and a PLC controller 5 fixedly mounted on the outer wall of the U-shaped frame 3.

[0027] Mold structure 2 is used to discharge gas between the diaphragm and the mold, and pressing structure 4 is used to press the diaphragm and the mold.

[0028] Reference Figures 3-8 As shown, mold structure 2 includes a lower mold 21. The bottom of the lower mold 21 is fixedly installed on the upper surface of the workbench 1. Several grooves 22 are arranged in a ring on the upper surface of the lower mold 21. A sealing ring 23 is fixedly installed on one side of the grooves 22 on the upper surface of the lower mold 21. Two annular cavities 24 are opened inside the lower mold 21. The two annular cavities 24 are distributed vertically and horizontally in a mirror image with the vertical center line of the lower mold 21 as the axis of symmetry. The lower mold 21 also has venting grooves 25 that communicate with the annular cavities 24 and the grooves 22. The multi-stage venting channel formed by the vertically and horizontally mirrored annular cavities 24 and several venting grooves 25 can prevent the glue from overflowing and clogging. At the same time, the venting grooves 25 are inclined at an angle of 30 to 45 degrees, consistent with the tangent direction of the groove contour 22, which can improve the gas flow path and allow for rapid gas discharge. The lower mold 21 also has a U-shaped groove 26. A U-shaped tube 27 is fixedly installed inside the U-shaped groove 26. The two ends of the U-shaped tube 27 are connected to the vertically and horizontally symmetrical annular cavities. 24 are connected. One-way valves 28 are movably installed at both ends of the U-shaped tube 27. A connecting pipe 29 is fixedly connected to the middle end of the U-shaped tube 27. One end of the connecting pipe 29 extends to the outer wall of the lower mold 21. A vacuum pump 210 is fixedly connected to one end of the connecting pipe 29. The vacuum pump 210 is fixedly installed on the outer wall of the lower mold 21. Several annular cavities 24 are arranged in a ring inside the lower mold 21. The annular cavities 24 are distributed in a mirror image with the vertical center line of the lower mold 21 as the axis of symmetry. The annular cavities 24 are connected to the row of... The air groove 25 and the U-shaped tube 27 are connected. Then, the pre-formed rubber material is placed in the cavity 22 of the lower mold 21. The hydraulic cylinder 41 is started by the PLC controller 5. The hydraulic cylinder 41 drives the pressing plate 42 and the upper mold 44 to move downward through the output end, so that the upper mold 44 presses the rubber material in the cavity 22. Then, the vacuum pump 210 is started by the PLC controller 5. The vacuum pump 210 discharges the gas in the cavity 22 through the connecting pipe 29, the U-shaped tube 27, the annular cavity 24 and the exhaust groove 25.

[0029] Reference Figure 5 , 8As shown, the mold structure 2 also includes connecting grooves 211. There are two connecting grooves 211, which are symmetrically opened in the lower mold 21. The two ends of the connecting grooves 211 are connected to two annular cavities 24. An arc-shaped groove 212 is opened in the lower mold 21 between the two connecting grooves 211. A connecting pipe 213 is fixedly connected inside the arc-shaped groove 212. One end of the connecting pipe 213 extends to the outer wall of the lower mold 21, and an air pump 214 is fixedly connected to one end of the connecting pipe 213. The air pump 214 is fixedly connected to the air pump 214. Installed on the outer wall of the lower mold 21, when it is necessary to demold the diaphragm sheet pressed and formed in the cavity 22 of the lower mold 21, the air pump 214 is started by the PLC controller 5. The air pump 214 inflates several exhaust grooves 25 through the connecting pipe 213, the arc groove 212, and the annular cavity 24, so that the gas inside the exhaust grooves 25 enters the cavity 22. The diaphragm sheet formed in the cavity 22 is demolded by the flow of gas, so that the diaphragm sheet will not stick to the cavity 22.

[0030] Reference Figure 1 , 2 As shown, the pressing structure 4 includes a hydraulic cylinder 41, which is fixedly installed on the upper surface of the U-shaped frame 3. The output end of the hydraulic cylinder 41 passes through the interior of the U-shaped frame 3. Several pressing plates 42 are fixedly installed on the output end of the hydraulic cylinder 41 in a ring arrangement. A sealing ring groove 43 is opened on the lower surface of the pressing plate 42. An upper mold 44 is fixedly installed on the lower surface of the pressing plate 42.

[0031] In this embodiment, the hydraulic cylinder 41 is a single-piston hydraulic cylinder. The inlet and outlet of the hydraulic cylinder are connected to one side of the external liquid directional valve through oil pressure pipes, and the other side of the external liquid directional valve is connected to the inlet and outlet of the hydraulic pump through oil pressure pipes. This allows the output of the hydraulic cylinder 41 to move up and down. Therefore, a flow divider and combiner valve is installed between the external liquid directional valve and the hydraulic cylinder 41 to ensure that the oil inlet and outlet of the hydraulic cylinder 41 are evenly distributed. The inlet and outlet of the hydraulic cylinder 41 are connected to the branch inlet and outlet of the external flow divider and combiner valve through oil pressure pipes, and the main inlet and outlet of the external flow divider and combiner valve are connected to one side of the external liquid directional valve through oil pressure pipes. It should be noted that the external liquid directional valve is an externally connected independent design and is an existing technical solution, so it will not be described in detail here.

[0032] Reference Figure 2 , 4 As shown in Figures 5 and 6, the cross-sectional shape of the cavity 22 is trapezoidal, the number of exhaust grooves 25 is arranged in a ring, the inclination angle of the exhaust grooves 25 is 30 to 45 degrees, the size of the cavity 22 is adapted to the size of the upper mold 44, and the size of the sealing ring groove 43 is adapted to the size of the sealing ring 23.

[0033] ReferenceFigure 1 , 2 As shown in Figures 5, 7, and 8, PLC controller 5 is electrically connected to hydraulic cylinder 41, PLC controller 5 is electrically connected to air pump 214, PLC controller 5 is electrically connected to vacuum pump 210, and PLC controller 5 is electrically connected to check valve 28.

[0034] In this embodiment, the PLC controller 5 controls the power supply of the air pump 214 through the output module to achieve air inflation; the PLC controller 11 controls the power supply of the vacuum pump 210 through the output module to achieve start and stop, and its control terminal is controlled by an external power supply control device through a wiring harness.

[0035] In use, several annular cavities 24 are arranged in a ring within the lower mold 21. These annular cavities 24 are mirror images of each other with the vertical center line of the lower mold 21 as the axis of symmetry. The annular cavities 24 are connected to the venting groove 25 and the U-shaped tube 27. The pre-formed rubber material is then placed in the cavity 22 of the lower mold 21. The hydraulic cylinder 41 is activated via the PLC controller 5. The hydraulic cylinder 41 drives the pressing plate 42 and the upper mold 44 downwards through its output end, causing the upper mold 44 to press the rubber material in the cavity 22. Then, the vacuum pump 210 is activated via the PLC controller 5. The vacuum pump 210 discharges the gas from the cavity 22 through the connecting pipe 29, the U-shaped tube 27, the annular cavities 24, and the venting groove 25. The annular cavities 24 and the U-shaped tube 27 are mirror images of each other with the designed axis of symmetry. The multi-stage venting channel formed by several venting grooves 25 can prevent the rubber material from overflowing and clogging. At the same time, the venting grooves 25 are inclined at an angle of 30 to 45 degrees, which is consistent with the tangent direction of the cavity 22 contour. This can improve the gas flow path and allow for rapid gas discharge. When it is necessary to demold the diaphragm sheet pressed and formed in the cavity 22 of the lower mold 21, the air pump 214 is started by the PLC controller 5. The air pump 214 inflates the several venting grooves 25 through the connecting pipe 213, the arc groove 212, and the annular cavity 24, so that the gas inside the venting grooves 25 enters the cavity 22. The diaphragm sheet formed in the cavity 22 is demolded by the gas flow, so that the diaphragm sheet does not stick to the cavity 22.

[0036] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A pressing mold for producing a sealing diaphragm sheet, comprising a worktable (1), characterized in that: The workbench (1) is provided with a mold structure (2), a U-shaped frame (3) is fixedly installed on the workbench (1), a pressing structure (4) is provided on the U-shaped frame (3), and a PLC controller (5) is fixedly installed on the outer wall of the U-shaped frame (3). The mold structure (2) is used to discharge gas between the diaphragm and the mold, and the pressing structure (4) is used to press between the diaphragm and the mold.

2. The pressing mold for producing a sealing diaphragm sheet according to claim 1, characterized in that: The mold structure (2) includes a lower mold (21). The bottom of the lower mold (21) is fixedly installed on the upper surface of the workbench (1). The upper surface of the lower mold (21) has several cavities (22) arranged in a ring. A sealing ring (23) is fixedly installed on one side of the cavity (22) on the upper surface of the lower mold (21). Two annular cavities (24) are opened inside the lower mold (21). The two annular cavities (24) are distributed vertically and horizontally with the vertical center line of the lower mold (21) as the axis of symmetry. The lower mold (21) also has an exhaust groove (2) that communicates with the annular cavity (24) and the cavity (22). 5) A U-shaped groove (26) is also provided in the lower mold (21). A U-shaped tube (27) is fixedly installed inside the U-shaped groove (26). The two ends of the U-shaped tube (27) are connected to the upper and lower symmetrical annular cavities (24). One-way valves (28) are movably installed at both ends of the U-shaped tube (27). A connecting pipe (29) is fixedly connected to the middle end of the U-shaped tube (27). One end of the connecting pipe (29) extends to the outer wall of the lower mold (21). A vacuum pump (210) is fixedly connected to one end of the connecting pipe (29). The vacuum pump (210) is fixedly installed on the outer wall of the lower mold (21).

3. The pressing mold for producing a sealing diaphragm sheet according to claim 2, characterized in that: The mold structure (2) also includes a connecting groove (211). There are two connecting grooves (211). The two connecting grooves (211) are symmetrically opened in the lower mold (21). The two ends of the connecting grooves (211) are connected to the two annular cavities (24). An arc groove (212) is opened in the lower mold (21) between the two connecting grooves (211). A connecting pipe (213) is fixedly connected inside the arc groove (212). One end of the connecting pipe (213) extends to the outer wall of the lower mold (21). One end of the connecting pipe (213) is fixedly connected to an air pump (214). The air pump (214) is fixedly installed on the outer wall of the lower mold (21).

4. The pressing mold for producing a sealing diaphragm sheet according to claim 3, characterized in that: The pressing structure (4) includes a hydraulic cylinder (41), which is fixedly installed on the upper surface of the U-shaped frame (3). The output end of the hydraulic cylinder (41) passes through the interior of the U-shaped frame (3). Several pressing plates (42) are fixedly installed on the output end of the hydraulic cylinder (41) in a ring arrangement. A sealing ring groove (43) is opened on the lower surface of the pressing plate (42). An upper mold (44) is fixedly installed on the lower surface of the pressing plate (42).

5. A pressing mold for producing a sealing diaphragm sheet according to claim 4, characterized in that: The cavity (22) has a trapezoidal cross-sectional shape. The number of exhaust grooves (25) is arranged in a ring. The inclination angle of the exhaust grooves (25) is thirty to forty-five degrees. The size of the cavity (22) is adapted to the size of the upper mold (44). The size of the sealing ring groove (43) is adapted to the size of the sealing ring (23).

6. A pressing mold for producing a sealing diaphragm sheet according to claim 5, characterized in that: The PLC controller (5) is electrically connected to the hydraulic cylinder (41), the PLC controller (5) is electrically connected to the air pump (214), the PLC controller (5) is electrically connected to the vacuum pump (210), and the PLC controller (5) is electrically connected to the check valve (28).

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