Automobile gasket forming die and forming method thereof

Abstract

The application discloses a car gasket forming die and a forming method thereof, and belongs to the technical field of rubber forming die. The car gasket forming die comprises a plurality of lower dies and upper dies, the upper dies are each provided with a glue injection pipe, and the car gasket forming die further comprises a heat dissipation box provided with a plurality of notches at the top, the inner cavity of the heat dissipation box is divided into an upper heat conduction cavity and a lower air inlet cavity through a transverse partition plate, an exhaust pipe is arranged in the matched lower die and upper die, a plurality of exhaust shells are arranged on the transverse partition plate, a plurality of exhaust ports are formed in the side wall of each exhaust shell and face the corresponding lower die, an air inlet assembly is arranged in the heat dissipation box and used for supplying airflow into each exhaust shell, and a plurality of local heat conduction assemblies are arranged and correspond to the lower dies. In daily use, the rubber raw material enters the mold cavity formed by the matched lower die and upper die through the glue injection pipe, then the air inlet assembly operates to supply airflow into each exhaust shell and cool each lower die, and the local heat conduction assemblies are used to increase the contact area between the overheated local part of the lower die and the airflow, so that the cooling of each part of the lower die is uniform.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of automobile parts manufacturing, and discloses a forming die for automobile gaskets and a forming method thereof. BACKGROUND

[0002] Rubber gaskets for automobiles have good elasticity and sealing performance, and are widely used in engine and accessory systems, transmission systems, steering systems, braking systems, etc., such as valve gaskets, water pump sealing rings, etc. Forming dies need to be used during manufacturing, for example:

[0003] A rubber hot-pressing forming die disclosed in Chinese Patent No. CN113290765B includes an upper die with a glue injection port, a middle die, a lower die, a cylindrical insert, a cylinder, a piston, a moving rod, and a sealing rubber ring. A sealing space is formed on the lower side of the plastic model by the sealing rubber ring. The sealing rubber ring continues to move upward under the action of the moving rod, compresses the sealing space, increases the pressure of the sealing space, balances the air pressure on the upper and lower sides of the plastic model, and prevents the deformation of the softened plastic model caused by excessive suction. However, the forming die has the following defects:

[0004] During forming, the die cannot be rapidly cooled, which reduces the cooling and solidification speed of the rubber sealing gasket, thereby reducing the manufacturing efficiency of the rubber sealing gasket SUMMARY

[0005] The present application aims to solve one of the technical problems in the prior art.

[0006] The present application provides a forming die for automobile gaskets, which includes a plurality of lower dies and upper dies, each upper die is provided with a glue injection pipe, and a heat dissipation box is further included. The top of the heat dissipation box is provided with a plurality of notches, and the inner cavity is divided into an upper heat conduction cavity and a lower air inlet cavity by a transverse partition plate. An exhaust pipe is arranged in each of the matched lower die and upper die, the exhaust pipe penetrates the upper and lower sides, and the lower end is connected to the heat conduction cavity. A plurality of exhaust shells are arranged on the transverse partition plate, and a plurality of exhaust ports are formed in the side wall of each exhaust shell corresponding to the lower die. An air inlet assembly is arranged in the heat dissipation box to supply air flow to each exhaust shell. A plurality of local heat conduction assemblies are arranged corresponding to each lower die to increase the contact area between the position with high surface temperature of the lower die and the air flow.

[0007] The local heat conduction assembly includes a plurality of heat conduction plates provided with high-temperature thermocouples, a rotating disc driven by a motor, a vertical plate, and a plurality of heat pipes. Each heat conduction plate is distributed on the peripheral wall of the lower die in a circumferential direction. The vertical plate is fixedly arranged on the top surface of the rotating disc and located outside the lower die. Each heat pipe is inserted into the inner side of the vertical plate.

[0008] The cross section of each heat pipe is arc-shaped with the axis of the lower die as the center. The middle part of each heat pipe is fixedly arranged on the inner side of the vertical plate, and the inner side is attached to the surface of the peripheral wall of the lower die or the heat conduction plate.

[0009] Two ends of each heat pipe can cover adjacent heat-conducting sheets, and the two ends are outwardly curved to form dispersion grooves between the two ends and the peripheral wall of the lower mold.

[0010] Each exhaust shell is arc-shaped towards the adjacent lower mold, and each exhaust port is arranged on the arc surface.

[0011] The air inlet assembly comprises a filter unit arranged in the heat dissipation box, an air supply unit connected with the filter unit and the lower end of each exhaust shell, the upper end of the filter unit is provided with an air inlet and extends out of the heat dissipation box, the filter unit is internally provided with filter bags and sponge balls, and the lower end of the filter unit penetrates through the transverse partition plate and extends into the air inlet cavity and is connected with the air supply unit.

[0012] The filter unit comprises a filter material cylinder and a plurality of barrier nets, a plurality of notches are formed in the bottom of the filter material cylinder, and each barrier net is inlaid in the notches.

[0013] The air supply unit comprises a fixing cylinder sleeved on the peripheral side of the bottom of the filter material cylinder, the upper end of the fixing cylinder is fixedly connected with the transverse partition plate, the lower end of the fixing cylinder is fixedly connected with the bottom of the heat dissipation box, and each exhaust pipe is communicated with the inner cavity of the fixing cylinder through a plurality of connecting pipelines provided with air pumps.

[0014] Each air supply pipeline is provided with an air pump and is communicated with one third of the exhaust shells.

[0015] Meanwhile, a forming method of the automobile gasket is disclosed, comprising the following steps:

[0016] S1, the upper mold and the lower mold are closed, and the rubber raw material enters the mold cavity from the injection pipe;

[0017] S2, the air inlet assembly is operated, so that the air flow passes through the peripheral wall of each lower mold to cool the lower mold;

[0018] S3, each local heat-conducting assembly detects the temperature of each part of the corresponding peripheral wall of the lower mold;

[0019] S4, each local heat-conducting assembly acts to increase the contact area of the highest temperature part of the corresponding peripheral wall of the lower mold with the air flow;

[0020] S5, after cooling, the upper mold is opened, and the formed automobile gasket is taken out from the mold cavity.

[0021] The beneficial effects of the present application are as follows:

[0022] The rubber raw material enters the mold cavity formed by the lower mold and the upper mold after the injection pipe is combined, then the air pumps are operated, the external airflow enters the filter cylinder through the air inlet, is filtered by the filter bag and is dehumidified by the sponge ball, then the airflow enters each exhaust shell through each barrier net and each connecting pipeline, is discharged from the exhaust port of each exhaust shell and is blown to the peripheral wall of each lower mold, the airflow is discharged through the exhaust pipe, and meanwhile the lower mold can be cooled again, and each high-temperature thermocouple detects the temperature of the peripheral wall of each lower mold, cooperates with the control system, controls the operation of each motor, moves each heat pipe to the position with the highest surface temperature of the corresponding lower mold and is attached to the heat-conducting sheet at the position, utilizes the high-efficiency heat conduction characteristic of the heat pipe to quickly transfer the heat at the high-temperature position of the peripheral wall of the lower mold to the airflow, so that the cooling of the lower mold is uniform, and compared with the prior art, the manufacturing efficiency of the rubber sealing gasket can be greatly improved and the quality of the finished product can be ensured. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a top view of the automobile gasket forming mold in the embodiment of the present application;

[0024] Figure 2 It is Figure 1 A-A direction cross-sectional structure schematic view in the embodiment of the present application;

[0025] Figure 3 It is Figure 2 B-B direction cross-sectional structure schematic view in the embodiment of the present application;

[0026] Figure 4 It is Figure 2 C-C direction cross-sectional structure schematic view in the embodiment of the present application.

[0027] REFERENCE NUMERALS

[0028] 1-lower mold, 2-upper mold, 3-injection pipe, 4-radiating box, 5-groove, 6-cross partition plate, 7-heat-conducting cavity, 8-air inlet cavity, 9-exhaust pipe, 10-exhaust shell, 11-exhaust port, 12-air inlet assembly, 121-filter unit, 1211-filter bag, 1212-sponge ball, 1213-filter cylinder, 1214-barrier net, 1215-gap, 122-gas supply unit, 1221-fixed cylinder, 1222-air pump, 1223-connecting pipeline, 13-local heat-conducting assembly, 131-heat-conducting sheet, 132-motor, 133-rotating disc, 134-stand plate, 135-heat pipe. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art belong to the scope of protection of the present application.

[0030] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0031] The following description, in conjunction with the accompanying drawings, details the automotive gasket molding die and its molding method provided in this application through specific embodiments and application scenarios.

[0032] Example 1:

[0033] like Figures 1 to 4 As shown, this application provides an automotive gasket molding die, including several lower molds 1 and upper molds 2. Each upper mold 2 is provided with a glue injection tube 3. It also includes a heat dissipation box 4. The top of the heat dissipation box 4 is provided with several slots 5. The inner cavity is divided into an upper heat conduction cavity 7 and a lower air intake cavity 8 by a transverse partition 6. Each paired lower mold 1 and upper mold 2 is provided with an exhaust pipe 9. The exhaust pipe 9 is open at both the top and bottom, and the lower end is connected to the heat conduction cavity 7. The transverse partition 6 is provided with several exhaust shells 10. Each exhaust shell 10 has several exhaust ports 11 on the side wall facing the corresponding lower mold 1. The heat dissipation box 4 is provided with an air intake assembly 12 for supplying airflow to each exhaust shell 10. Several local heat conduction assemblies 13 are respectively provided for each lower mold 1 to increase the contact area between the higher surface temperature position of the lower mold 1 and the airflow.

[0034] Furthermore, each of the exhaust shells 10 has an arc surface facing the adjacent lower mold 1, and each exhaust port 11 is disposed on the arc surface.

[0035] A method for molding automotive gaskets is also disclosed, characterized by the following steps:

[0036] S1. The upper mold 2 and lower mold 1 are closed, and the rubber raw material enters the mold cavity from the injection tube 3;

[0037] S2, the air intake assembly 12 operates, causing airflow to pass through the perimeter wall of each lower mold 1 to cool down the lower mold 1;

[0038] S3. Each local heat-conducting component 13 detects the temperature at various points on the perimeter wall of the lower mold 1.

[0039] S4. Each local heat-conducting component 13 is activated to increase the contact area between the corresponding lower mold 1 peripheral wall with the highest temperature and the airflow.

[0040] S5. After cooling is complete, open the upper mold 2 and remove the formed automotive gasket from the mold cavity.

[0041] In this embodiment of the application, due to the above-described structure, the rubber raw material enters the mold cavity formed after the lower mold 1 and the upper mold 2 are closed through the injection pipe 3. Then, the air intake component 12 operates to supply airflow into each exhaust shell 10 to cool each lower mold 1. Finally, the airflow is discharged through each exhaust pipe 9. During this process, the lower mold 1 can also be cooled again. The local heat conduction component 13 is used to increase the contact area between the overheated parts of the lower mold 1 and the airflow to ensure that the lower mold 1 is cooled evenly and quickly.

[0042] Example 2:

[0043] like Figures 1 to 4 As shown, in this embodiment, in addition to the structural features of the aforementioned embodiments, the local heat-conducting component 13 includes a plurality of heat-conducting plates 131 with high-temperature thermocouples, a turntable 133 driven by a motor 132, a vertical plate 134, and a plurality of heat pipes 135. Each heat-conducting plate 131 is distributed circumferentially on the peripheral wall of the lower mold 1. The vertical plate 134 is fixed on the top surface of the turntable 133 and located outside the lower mold. Each heat pipe 135 is inserted into the inner side of the vertical plate 134.

[0044] Furthermore, the cross-section of each heat pipe 135 is arc-shaped and the axis of the lower mold 1 is the center. The middle part is fixed inside the vertical plate 134, and the inner side is in contact with the peripheral wall of the lower mold 1 or the surface of the heat-conducting plate 131.

[0045] Furthermore, the two ends of each heat pipe 135 can cover the adjacent heat-conducting sheet 131, and the two ends are raised outward to form a dispersion groove between them and the peripheral wall of the lower mold 1.

[0046] In this embodiment of the application, due to the above-described structure, several heat-conducting plates 131 and several high-temperature thermocouples are distributed on the periphery of each lower mold 1. Each high-temperature thermocouple detects the temperature at the corresponding position on the periphery of the lower mold 1, and controls the operation of each motor 132 through the control system, causing each turntable 133 to rotate. Each upright plate 134 rotates to the position with the highest temperature on the periphery of the lower mold 1, and the inner side of each heat pipe 135 contacts the heat-conducting plate 131 at the position with the highest temperature on the periphery of the lower mold 1, so that the heat at this position is quickly conducted into the airflow. The two ends of the heat pipe 135 extend to overlap with the adjacent heat-conducting plates 131 on both sides, which can greatly increase the length of the heat pipe 135 to improve the heat dissipation efficiency of the local high temperature of the lower mold 1. In addition, the setting of the dispersion groove can prevent the heat pipe 135 from contacting the adjacent heat-conducting plate 131, ensuring that only the position with the highest temperature on the periphery of the lower mold 1 is cooled.

[0047] Example 3:

[0048] like Figures 1 to 4As shown, in this embodiment, in addition to the structural features of the foregoing embodiments, the air intake assembly 12 comprises a filter unit 121 arranged in the heat dissipation box 4, a gas supply unit 122 connected to the filter unit 121 and the lower ends of the exhaust shells 10, the upper end of the filter unit 121 has an air inlet and extends out of the heat dissipation box 4, the inside is provided with filter bags 1211 and sponge balls 1212, and the lower end penetrates through the transverse partition plate 6 into the air intake cavity 8 and is connected to the gas supply unit 122.

[0049] Further, the filter unit 121 comprises filter material cylinders 1213 and a plurality of barrier nets 1214, the bottom of each filter material cylinder 1213 is provided with a plurality of notches 1215, and each barrier net 1214 is embedded in the notches 1215.

[0050] Further, the gas supply unit 122 comprises a fixed cylinder 1221 sleeved on the bottom of the filter material cylinder 1213, the upper end of the fixed cylinder 1221 is fixedly connected to the transverse partition plate 6, the lower end is fixedly connected to the bottom of the heat dissipation box 4, and each exhaust pipe 9 is connected to the inner cavity of the fixed cylinder 1221 through a plurality of connection pipelines 1223 provided with air pumps 1222.

[0051] Further, each gas supply pipeline is provided with an air pump 1222 and is connected to one third of the exhaust shells 10.

[0052] In this embodiment of the present application, due to the above-mentioned structure, the airflow enters the filter material cylinder 1213 from the air inlet, first passes through the filter bags, filters the dust and impurities in the airflow, then passes through the sponge balls 1212, and the sponge balls 1212 adsorb the moisture in the airflow, so that the airflow blowing on the peripheral wall of the lower mold 1 is dry and clean, thereby avoiding the dust and impurities carried in the airflow from adhering to the surface of the lower mold 1 under the action of water, and affecting the cooling effect of the airflow on the lower mold 1.

[0053] It should be noted that in this document, the terms "comprise", "comprising", or any other variant thereof are intended to cover non-exclusive inclusions, so that processes, methods, articles, or devices that include a series of elements not only include those elements, but also include other elements not explicitly listed, or inherent to such processes, methods, articles, or devices. Without more limitations, the element defined by the statement "comprising a" does not exclude the presence of other identical elements in the process, method, article, or device that includes the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, but can also include performing functions in a substantially simultaneous manner or in reverse order, for example, the described method can be performed in an order different from that described, and various steps can also be added, omitted, or combined. In addition, the features described with reference to certain examples can be combined in other examples.

[0054] The embodiments of the present application are described above with reference to the accompanying drawings, but the present application is not limited to the above-described specific embodiments, and the above-described specific embodiments are merely illustrative, but not restrictive, and a person of ordinary skill in the art can make many forms under the inspiration of the present application without departing from the purpose of the present application and the scope protected by the claims.

Claims

1. An automobile gasket forming die comprising a plurality of lower dies and upper dies, each of the upper dies being provided with a glue injection pipe, characterized in that, The heat dissipation box is provided with a plurality of notches on the top, and the inner cavity is divided into an upper heat conduction cavity and a lower air inlet cavity by a transverse partition plate. Exhaust pipes are arranged in the matched lower mold and upper mold, and the exhaust pipes are penetrated from top to bottom and connected to the heat conduction cavity at the lower end. A plurality of exhaust shells are arranged on the transverse partition plate, and a plurality of exhaust ports are arranged on the side wall of each exhaust shell corresponding to the lower mold. An air inlet assembly is arranged in the heat dissipation box to supply airflow to each exhaust shell. A plurality of local heat conduction assemblies are arranged corresponding to each lower mold to increase the contact area between the position with higher surface temperature of the lower mold and the airflow. The local heat conduction assembly comprises a plurality of heat conduction plates provided with high-temperature thermocouples, a rotating disc driven by a motor, a vertical plate fixed on the top surface of the rotating disc and located outside the lower mold, and a plurality of heat pipes inserted into the inside of the vertical plate.

2. The automobile gasket forming die according to claim 1, wherein The cross section of each heat pipe is arc-shaped with the axis of the lower mold as the center, and the middle part is fixed on the inside of the vertical plate and is in close contact with the surface of the heat conduction plate or the peripheral wall of the lower mold.

3. The automobile gasket forming die according to claim 2, wherein The two ends of each heat pipe can cover the adjacent heat conduction plate, and the two ends are outwardly tilted to form a dispersion groove between the peripheral wall of the lower mold.

4. The automobile gasket forming die according to claim 1, wherein The side of each exhaust shell corresponding to the adjacent lower mold is arc-shaped, and each exhaust port is arranged on the arc surface.

5. The automobile gasket forming die according to claim 1, wherein The air inlet assembly comprises a filter unit arranged in the heat dissipation box, a gas supply unit connected to the filter unit and the lower end of each exhaust shell, and the upper end of the filter unit has an air inlet and extends out of the heat dissipation box, and the inside of the filter unit is provided with a filter bag and a sponge ball, and the lower end of the filter unit penetrates through the transverse partition plate and extends into the air inlet cavity and is connected to the gas supply unit.

6. The automotive gasket forming die of claim 5 wherein, The filter unit comprises a filter material cylinder and a plurality of barrier nets, and a plurality of notches are formed in the bottom of the filter material cylinder, and each barrier net is inlaid in the notch.

7. The automotive gasket forming die of claim 6 wherein, The gas supply unit comprises a fixed cylinder sleeved on the bottom of the filter material cylinder, and the upper end of the fixed cylinder is fixedly connected to the transverse partition plate and the lower end is fixedly connected to the bottom of the heat dissipation box, and each exhaust pipe is connected to the inner cavity of the fixed cylinder through a plurality of connection pipes provided with air pumps.

8. The automotive gasket forming die of claim 7, wherein, Each gas supply pipe is provided with an air pump and is connected to one third of the exhaust shells.

9. A method of forming a gasket for an automobile as claimed in claim 1, wherein, The method comprises the following steps: S1, the upper mold and the lower mold are closed, and the rubber raw material enters the mold cavity from the injection pipe; S2, the air inlet assembly operates to make the airflow pass through the peripheral wall of each lower mold to cool the lower mold; S3, each local heat conduction assembly detects the temperature of each part of the peripheral wall of the corresponding lower mold; S4, each high-temperature thermocouple detects the temperature of the corresponding position of the peripheral wall of the lower mold, and controls the operation of each motor through the control system to make each rotating disc rotate and each vertical plate rotate to the position with the highest temperature of the peripheral wall of the lower mold, and the inside of each heat pipe contacts the heat conduction plate at the position with the highest temperature of the peripheral wall of the lower mold to quickly conduct the heat at the position to the airflow; S5, after cooling, the upper mold is opened, and the formed automobile gasket is taken out from the mold cavity.

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