Automobile gasket forming die and forming method thereof

Abstract

The automobile gasket forming mold comprises a plurality of lower molds and upper molds, each upper mold is provided with a glue injection pipe, the automobile gasket forming mold further comprises a heat dissipation box with a plurality of notches in the top, an 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, and exhaust pipes are arranged in the lower molds and the upper molds which are paired. A plurality of exhaust shells are arranged on the transverse partition plate, a plurality of exhaust ports are formed in the side wall, facing the corresponding lower die, of each exhaust shell, an air inlet assembly is arranged in the heat dissipation box and used for supplying air flow into each exhaust shell, and a plurality of local heat conduction assemblies correspond to the lower dies respectively. Rubber raw materials enter a mold cavity formed after the lower mold and the upper mold are assembled through the rubber injection pipe, then the air inlet assembly operates to supply air flow into the exhaust shells and cool the lower molds, and the local heat conduction assembly is used for increasing the contact area of overheated local parts of the lower molds and the air flow so as to ensure that all the parts of the lower molds are cooled uniformly.

Description

Technical Field

[0001] The invention relates to the field of automobile parts manufacturing, and is an automobile gasket forming die and a forming method thereof. Background Art

[0002] Rubber gaskets for automobiles have good elasticity and sealing properties and are widely used in engines and accessory systems, transmission systems, steering systems, brake systems, etc., such as valve gaskets, water pump seals, etc., and molding molds are required for manufacturing, such as:

[0003] The Chinese invention patent with the announcement number CN113290765B discloses a rubber hot pressing mold, which includes an upper mold with a glue injection port, a middle mold, a lower mold, a cylindrical insert, a cylinder, a piston, a moving rod and a sealing rubber ring. The sealing rubber ring forms a sealed space on the lower side of the plastic model. The sealing rubber ring continues to move upward under the action of the moving rod to compress the sealed space, increase the pressure of the sealed space, and balance the air pressure on the upper and lower sides of the plastic model to prevent excessive suction from causing deformation of the heat-softened plastic model. However, the invention has the following defects:

[0004] During molding, the mold cannot be cooled quickly, which reduces the cooling and solidification speed of the rubber sealing gasket, thereby reducing the manufacturing efficiency of the rubber sealing gasket. Summary of the invention

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

[0006] The present application provides an automobile gasket forming mold, comprising a plurality of lower molds and upper molds, each of which is provided with a glue injection tube, and also comprising a heat sink, a plurality of notches are provided on the top of the heat sink, and an inner cavity is divided into an upper heat conduction cavity and a lower air intake cavity by a transverse partition, exhaust pipes are provided in the paired lower molds and upper molds, the exhaust pipes are connected from top to bottom, and the lower end is connected to the heat conduction cavity, a plurality of exhaust shells are provided on the transverse partition, and a plurality of exhaust ports are provided on the side wall of each exhaust shell facing the corresponding lower mold, an air intake component is provided in the heat sink for supplying airflow to each exhaust shell, and a plurality of local heat conduction components correspond to each lower mold respectively, and are used to increase the contact area between the lower mold surface temperature position and the airflow.

[0007] The local heat conduction component includes a plurality of heat conducting plates with high-temperature thermocouples, a turntable driven by a motor, a vertical plate and a plurality of heat pipes. The heat conducting plates are distributed on the peripheral wall of the lower mold at intervals in the circumferential direction. The vertical plate is fixed on the top surface of the turntable and located on the outer side of the lower mold. The heat pipes are respectively inserted into the inner side of the vertical plate.

[0008] The cross section of each heat pipe is arc-shaped and takes the axis of the lower mold as the center of the circle. The middle part is fixed on the inner side of the vertical plate, and the inner side is in contact with the peripheral wall of the lower mold or the surface of the heat conducting plate.

[0009] Both ends of each heat pipe can cover adjacent heat conducting sheets, and both ends are tilted outwards to form dispersion grooves between the lower mold peripheral wall.

[0010] Each exhaust shell has an arc surface facing the adjacent lower mold side, and each exhaust port is arranged on the arc surface.

[0011] The air intake assembly includes a filter unit arranged in the heat dissipation box, and an air supply unit connecting the filter unit and the lower ends of each exhaust shell. The filter unit has an air inlet at the upper end and extends out of the heat dissipation box, a filter bag and a sponge ball are arranged inside, and the lower end passes through the partition plate and extends into the air intake cavity and is connected to the air supply unit.

[0012] The filter unit comprises a filter material cylinder and a plurality of barrier nets. A plurality of notches are arranged at the bottom of the filter material cylinder, and the barrier nets are respectively embedded in the notches.

[0013] The air supply unit includes a fixed cylinder sleeved on the circumference of the bottom of the filter material cylinder, the upper end of the fixed cylinder is fixedly connected to the transverse partition 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 multiple connecting pipelines equipped with air pumps.

[0014] Each air supply line is equipped with an air pump and is connected to one-third of the exhaust shell.

[0015] Also disclosed is a method for forming an automobile gasket, comprising the following steps:

[0016] S1, close the upper mold and the lower mold, and the rubber raw material enters the mold cavity from the injection hose;

[0017] S2, the air intake assembly operates to allow air to pass through the peripheral walls of each lower mold to cool the lower mold;

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

[0019] S4, each local heat-conducting component operates to increase the contact area between the corresponding lower mold wall with the highest temperature and the airflow;

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

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

[0022] The rubber raw material enters the mold cavity formed by the lower mold and the upper mold through the glue injection tube, and then each air pump is operated, and the external air flow enters the filter material cylinder from the air inlet. After being filtered by the filter bag and absorbing moisture by the sponge ball, the air flow passes through each barrier net and each connecting pipe into each exhaust shell, and is discharged from the exhaust port on each exhaust shell and blown to the surrounding wall of each lower mold. After cooling each lower mold, the air flow is discharged through the exhaust pipe, and the lower mold can also be cooled again. At the same time, each high-temperature thermocouple detects the temperature of the surrounding wall of each lower mold, cooperates with the control system, and controls the operation of each motor to move each heat pipe to the position with the highest surface temperature of the corresponding lower mold and fit with the thermal conductive plate at that position. The heat at the high-temperature position of the surrounding wall of the lower mold is quickly transferred to the air flow by utilizing the efficient heat conduction characteristics of the heat pipe, so as to ensure uniform cooling of all parts of the lower mold. Compared with the existing technology, it can greatly improve the manufacturing efficiency of rubber sealing gaskets and ensure the quality of finished products. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A top view of a molding die for an automobile gasket in an embodiment of the present application;

[0024] Figure 2 for Figure 1 Schematic diagram of the cross-section structure in the AA direction;

[0025] Figure 3 for Figure 2 Schematic diagram of the cross-section structure in the middle BB direction;

[0026] Figure 4 for Figure 2 Schematic diagram of the cross-section structure in the CC direction.

[0027] Reference numerals

[0028] 1-lower mold, 2-upper mold, 3-glue injection hose, 4-heat sink, 5-slot, 6-cross partition, 7-heat conduction cavity, 8-air intake cavity, 9-exhaust pipe, 10-exhaust shell, 11-exhaust port, 12-air intake assembly, 121-filter unit, 1211-filter bag, 1212-sponge ball, 1213-filter material cylinder, 1214-barrier net, 1215-gap, 122-air supply unit, 1221-fixed cylinder, 1222-air pump, 1223-connecting pipeline, 13-local heat conduction assembly, 131-heat conduction sheet, 132-motor, 133-turntable, 134-vertical plate, 135-heat pipe, 136-dispersion tank. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0030] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0031] The automotive gasket forming mold and forming method provided in the embodiments of the present application are described in detail below through specific embodiments and their application scenarios in conjunction with the accompanying drawings.

[0032] Embodiment 1:

[0033] like Figures 1 to 4 As shown, an embodiment of the present application provides an automobile gasket forming mold, including a plurality of lower molds 1 and upper molds 2, each upper mold 2 is provided with a glue injection tube 3, and also includes a heat sink 4, a plurality of notches 5 are provided on the top of the heat sink 4, and the inner cavity is divided into an upper heat conduction cavity 7 and a lower air intake cavity 8 by a transverse partition 6, and an exhaust pipe 9 is provided in the paired lower mold 1 and upper mold 2. The exhaust pipe 9 is connected from top to bottom, and the lower end is connected to the heat conduction cavity 7, and a plurality of exhaust shells 10 are provided on the transverse partition 6. Each exhaust shell 10 has a plurality of exhaust ports 11 on the side wall facing the corresponding lower mold 1, and an air intake component 12 is provided in the heat sink 4 for supplying airflow to each exhaust shell 10, and a plurality of local heat conduction components 13, which respectively correspond to each lower mold 1, are used to increase the contact area between the surface temperature of the lower mold 1 and the airflow.

[0034] Furthermore, each exhaust shell 10 has a curved surface facing the adjacent lower mold 1 , and each exhaust port 11 is arranged on the curved surface.

[0035] A method for forming an automobile gasket is also disclosed, which is characterized by comprising the following steps:

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

[0037] S2, the air intake assembly 12 is operated to allow the air flow to pass through the peripheral wall of each lower mold 1 to cool the lower mold 1;

[0038] S3, each local heat-conducting component 13 detects the temperature of each location on the peripheral wall of the corresponding lower mold 1;

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

[0040] S5. After cooling, open the upper mold 2 and take the formed automobile gasket out of the mold cavity.

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

[0042] Embodiment 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, the heat-conducting plates 131 are circumferentially spaced on the peripheral wall of the lower mold 1, the vertical plate 134 is fixed on the top surface of the turntable 133 and is located on the outer side of the lower mold, and the heat pipes 135 are respectively inserted into the inner side of the vertical plate 134.

[0044] Furthermore, the cross section of each heat pipe 135 is arc-shaped with the axis of the lower mold 1 as the center of the circle, the middle part is fixed on the inner side of 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 conductive plate 131.

[0045] Furthermore, both ends of each heat pipe 135 can cover the adjacent heat conducting sheet 131 , and both ends are tilted outwards to form a dispersion groove 136 between the ends and the peripheral wall of the lower mold 1 .

[0046] In this embodiment of the present application, due to the adoption of the above-mentioned structure, a number of heat-conducting sheets 131 and a number of high-temperature thermocouples are distributed on the peripheral wall of each lower mold 1, and each high-temperature thermocouple detects the temperature of the corresponding position of the peripheral wall of the lower mold 1, and controls the operation of each motor 132 through the control system to rotate each turntable 133, and each vertical plate 134 rotates to the position with the highest temperature on the peripheral wall of the lower mold 1, and the inner side of each corresponding heat pipe 135 contacts the heat-conducting sheet 131 at the position with the highest temperature on the peripheral wall of the lower mold 1, and the heat at this position is quickly transferred to the airflow, and the two ends of the heat pipe 135 extend to overlap with the adjacent two-side heat-conducting sheets 131, 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, and the setting of the dispersion groove 136 can prevent the heat pipe 135 from contacting the adjacent heat-conducting sheets 131, ensuring that only the point with the highest temperature on the peripheral wall of the lower mold 1 is cooled.

[0047] Embodiment 3:

[0048] like Figures 1 to 4As shown, in this embodiment, in addition to the structural features of the aforementioned embodiments, the air intake assembly 12 includes a filter unit 121 arranged in the heat sink 4, and an air supply unit 122 connected to the filter unit 121 and the lower end of each exhaust shell 10. The filter unit 121 has an air inlet at the upper end and extends out of the heat sink 4, a filter bag 1211 and a sponge ball 1212 are arranged inside, and the lower end passes through the partition 6 and extends into the air intake cavity 8 and is connected to the air supply unit 122.

[0049] Furthermore, the filter unit 121 includes a filter material cylinder 1213 and a plurality of barrier nets 1214 . A plurality of notches 1215 are provided at the bottom of the filter material cylinder 1213 , and the barrier nets 1214 are respectively embedded in the notches 1215 .

[0050] Furthermore, the air supply unit 122 includes a fixed cylinder 1221 which is sleeved on the bottom circumference of the filter material cylinder 1213. The upper end of the fixed cylinder 1221 is fixedly connected to the transverse partition 6 and the lower end is fixedly connected to the bottom of the heat dissipation box 4. Each exhaust pipe 9 is connected to the inner cavity of the fixed cylinder 1221 through a plurality of connecting pipes 1223 equipped with an air pump 1222.

[0051] Furthermore, each air supply pipeline is equipped with an air pump 1222 and is connected to one third of the exhaust shell 10 .

[0052] In this embodiment of the present application, due to the adoption of the above-mentioned structure, the airflow enters the filter material tube 1213 from the air inlet, first passes through the track to filter the dust and impurities in the airflow, and then passes through the sponge ball 1212, which absorbs the moisture in the airflow, making the airflow blown to the wall of the lower mold 1 dry and clean, thereby preventing the dust and impurities carried in the airflow from adhering to the surface of the lower mold 1 under the action of moisture, thereby affecting the cooling effect of the airflow on the lower mold 1.

[0053] It should be noted that, in this article, the term "comprises", "includes" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the method and device in the embodiment of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0054] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. An automobile gasket forming mold, comprising a plurality of lower molds and upper molds, each upper mold is provided with a glue injection tube, characterized in that: It also includes a heat sink, which has a plurality of slots on its top. The inner cavity is divided into an upper heat conduction cavity and a lower air intake cavity by a transverse partition. Exhaust pipes are provided in the paired lower and upper molds. The exhaust pipes are connected from top to bottom and the lower end is connected to the heat conduction cavity. A plurality of exhaust shells are provided on the transverse partition. A plurality of exhaust ports are provided on the side wall of each exhaust shell facing the corresponding lower mold. An air intake assembly is provided in the heat sink for supplying airflow to each exhaust shell. A plurality of local heat conduction assemblies correspond to each lower mold respectively and are used to increase the contact area between the lower mold surface temperature position and the airflow.

2. The automotive gasket forming mold according to claim 1, characterized in that: The local heat conduction component includes a plurality of heat conducting plates with high-temperature thermocouples, a turntable driven by a motor, a vertical plate and a plurality of heat pipes. The heat conducting plates are distributed on the peripheral wall of the lower mold at intervals in the circumferential direction. The vertical plate is fixed on the top surface of the turntable and located on the outer side of the lower mold. The heat pipes are respectively inserted into the inner side of the vertical plate.

3. The automotive gasket forming mold according to claim 2, characterized in that: The cross section of each heat pipe is arc-shaped and takes the axis of the lower mold as the center of the circle. The middle part is fixed on the inner side of the vertical plate, and the inner side is in contact with the peripheral wall of the lower mold or the surface of the heat conducting plate.

4. The automotive gasket forming mold according to claim 3, characterized in that: Both ends of each heat pipe can cover adjacent heat conducting sheets, and both ends are tilted outwards to form dispersion grooves between the lower mold peripheral wall.

5. The automotive gasket forming mold according to claim 1, characterized in that: Each exhaust shell has an arc surface facing the adjacent lower mold side, and each exhaust port is arranged on the arc surface.

6. The automotive gasket forming mold according to claim 1, characterized in that: The air intake assembly includes a filter unit arranged in the heat dissipation box, and an air supply unit connecting the filter unit and the lower ends of each exhaust shell. The filter unit has an air inlet at the upper end and extends out of the heat dissipation box, a filter bag and a sponge ball are arranged inside, and the lower end passes through the partition plate and extends into the air intake cavity and is connected to the air supply unit.

7. The automotive gasket forming die according to claim 6, characterized in that: The filter unit comprises a filter material cylinder and a plurality of barrier nets. A plurality of notches are arranged at the bottom of the filter material cylinder, and the barrier nets are respectively embedded in the notches.

8. The automotive gasket forming die according to claim 7, characterized in that: The air supply unit includes a fixed cylinder sleeved on the circumference of the bottom of the filter material cylinder, the upper end of the fixed cylinder is fixedly connected to the transverse partition 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 multiple connecting pipelines equipped with air pumps.

9. The automotive gasket forming die according to claim 8, characterized in that: Each air supply line is equipped with an air pump and is connected to one-third of the exhaust shell.

10. A molding method suitable for the automotive gasket molding die of claim 1, characterized in that: The following steps are involved: S1, close the upper mold and the lower mold, and the rubber raw material enters the mold cavity from the injection hose; S2, the air intake assembly operates to allow air to pass through the peripheral walls of each lower mold to cool the lower mold; S3, each local heat-conducting component detects the temperature of each location on the peripheral wall of the corresponding lower mold; S4, each local heat-conducting component operates to increase the contact area between the corresponding lower mold wall with the highest temperature and the airflow; S5. After cooling is completed, the upper mold is opened and the formed automobile gasket is taken out from the mold cavity.

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