Valve mold of trailer brake system

Abstract

The utility model provides a trailer brake system valve mold which comprises a movable mold and a fixed mold, a cavity and a pouring gate system are formed after the movable mold and the fixed mold are closed, a mold core is arranged in the cavity, the pouring gate system comprises an outer pouring gate and a main pouring gate, and the main pouring gate is divided into two paths, namely a valve bottom pouring gate and a valve periphery pouring gate; auxiliary pressurizing pouring gates are arranged at the positions, connected into the front ends of the cavities, of the valve periphery pouring gates, and the tail ends of the auxiliary pressurizing pouring gates are communicated with the cavities, provided with the mold core insertion side ends, of the valve in the axial direction from bottom to top. The trailer brake system valve mold provided by the utility model is reasonable in structural design, the branch pouring gate connected out from the main pouring gate is correspondingly designed on the end surface of the cavity at the end of the core insertion side, and the branch pouring gate is wound downwards in the circumferential direction from the front end of the core insertion side of the valve and provides feeding for the cavity at the end part of the side from bottom to top, so that the end part of the side is effectively filled with molten metal, and the service life of the valve is prolonged. The pressure is ensured, so that the shrinkage cavity phenomenon is reduced, and the forming quality of the trailer brake system valve is effectively ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to a mould especially valve mould manufacturing technical field, especially a trailer brake system valve mould. BACKGROUND

[0002] The brake system of the trailer is an important component to ensure the safety of driving, and in the brake system of the trailer, the valve is a key safety component, and its design and performance are directly related to the braking effect and driving stability of the trailer. When producing the valve of the brake system of the trailer, the shell part of the valve is usually pressure die cast, that is, molten metal is injected into a mould through high pressure, and after cooling, a part with a required shape is formed. The pressure die casting process has the advantages of high production efficiency, relatively low cost, and being able to produce parts with complex shape and high precision. In the automobile industry, many key parts, including the valve of the brake system of the trailer, are manufactured by using the pressure die casting process.

[0003] The existing pressure die casting process cooperates with the valve mould of the brake system of the trailer to produce the shell part of the valve. In the mould design, the structure of the valve needs to be designed correspondingly. Usually, the mould includes a moving mould and a fixed mould, and when the moving mould and the fixed mould are closed, a cavity and a runner system for feeding metal liquid are formed. The runner system is used to deliver and inject metal liquid into the cavity. The runner system usually includes an outer runner and a main runner. The outer runner is used to access metal liquid with pressure from the outside, and the main runner is in communication with the outer runner and introduces the metal liquid into the cavity.

[0004] The cavity is used to pressure die cast the outer surface of the valve, and a core is designed in the cavity to form the inner surface of the valve. In the production of the valve of the brake system of the trailer, the shell of the valve has a generally cylindrical structure, and the cylindrical structure has a chamber coaxial with the cylindrical structure. For this purpose, a core that protrudes into the cavity needs to be correspondingly arranged in the cavity of the mould. The core that protrudes into the cavity needs to be designed at the axial middle end of the cylindrical structure of the valve shell, and supporting and pushing devices are designed at both ends respectively for demoulding operation after the internal pressure casting is formed.

[0005] In the design of the mould of the valve, the metal liquid is usually fed from the circumferential side of the cylindrical structure of the valve shell, and an overflow cavity and an exhaust groove are designed on the other side. In the existing design of feeding from the circumferential side, the main runner needs to be branched when accessing the cavity to provide feeding with pressure for the forming of the pressure casting. Since the core needs to be inserted into the end surface of the valve in the axial cross section, the runner cannot be directly accessed from the side. Therefore, the main runner is usually branched into two paths, one path corresponding to the side wall of the valve and the other path corresponding to the end surface of the valve without the core protruding into the axial direction.

[0006] However, in this feeding mode, the energy of the metal liquid under pressure is continuously consumed during the injection filling process, and when flowing through and filling the axial core-inserted end cavity, there is a lack of pressure. The lack of pressure will cause shrinkage holes to occur when the die casting is finally formed, thereby affecting the final forming quality. The utility model discloses the technical scheme

[0007] The utility model discloses to solve the technical problems: in order to overcome the prior art, the utility model provides a trailer brake system valve die, on the basis of the existing runner system, the cavity corresponding to the valve end face of one side of the insert core is reasonably arranged and designed with a sub-runner under the premise of not affecting the insertion of the insert core, effectively providing the pressure metal liquid for the end face forming of the valve on this side, effectively reducing the shrinkage hole phenomenon, and ensuring the final forming quality of the valve.

[0008] The utility model discloses the technical scheme that solves its technical problems is: a trailer brake system valve die is used to the die casting forming of the valve of trailer brake system, including movable die and fixed mode, the movable die and fixed mode close and form cavity and runner system, the cavity is equipped with the insert core for the inner surface forming of corresponding valve, the runner system includes outer gate and main runner, the outer gate outer end is accessed with pressure metal liquid, and the inner end communicates with main runner, the main runner is divided into two and has two roads, and the valve bottom runner and valve peripheral runner are communicated respectively, and the valve bottom runner is communicated with the cavity of valve axial no-insertion side end, and the valve peripheral runner is communicated with the cavity corresponding to the valve circumferential side wall, the valve peripheral runner has the branch at the position of accessing the front end of the cavity, and the branch is auxiliary pressure runner, and the auxiliary pressure runner end is communicated with the cavity of valve axial having insert insertion side end from below to above.

[0009] In the above scheme, in view of the problem that the pressure of the metal liquid on one side end is lost and causes shrinkage holes, the auxiliary pressure runner is arranged in the runner system, the mold space is reasonably utilized, the valve body is fed from below to above from the lower end of the valve body, the valve body is fed under pressure on the side end in the limited space, the insert core is not affected by the push-in of the side end, the shrinkage hole phenomenon in the die casting process can be effectively reduced, and the die casting quality of the valve is effectively improved.

[0010] Further, the auxiliary pressurizing sprue comprises a plane branch sprue, a circumferential sprue and a feeding sprue which are sequentially communicated; the plane branch sprue is located in the same plane with the circumferential sprue, and the plane branch sprue extends to the side end where the core is inserted along the valve axial direction after being separated from the circumferential sprue; the circumferential sprue is located at the end of the valve axial direction where the core is inserted, and is arranged around the circumferential side of the valve; the feeding sprue is located at the end of the valve axial direction where the core is inserted, and is located below the valve cavity, and is communicated with the valve cavity through a feeding port.

[0011] Further, the circumferential sprue is arranged in an L-shaped structure, wherein the upper end of the vertical part of the L-shaped structure is connected with the end of the plane branch sprue, the end of the horizontal part of the L-shaped structure is connected with the feeding sprue, and the vertical part and the horizontal part of the L-shaped structure are connected through an arc transition. Through the arc transition, the energy loss of the pressure metal liquid in the flow turning process can be effectively reduced, and the feeding effect of the cavity at the end position of the valve can be better ensured.

[0012] Further, the bottom surface of the feeding port is an upward guiding slope, and the cross-sectional area of the flow channel port gradually decreases along the slope of the guiding slope when the pressure metal liquid flows through the guiding slope, so that the entering pressure metal liquid can be subjected to a certain pressurizing effect.

[0013] Preferably, the main sprue is provided with a main flow dividing block to divide the sprue into two paths; the circumferential sprue is provided with a secondary flow dividing block at the inlet communicated with the circumferential side wall of the valve, the secondary flow dividing block divides the pressure metal liquid flowing into the corresponding cavity of the circumferential side wall of the valve into two parts, and the secondary flow dividing block is located at the position of 1 / 2 of the axial length of the valve.

[0014] Correspondingly, the front end of the circumferential sprue corresponding to the position of the secondary flow dividing block is provided with an auxiliary flow dividing block to divide the sprue into the auxiliary pressurizing sprue.

[0015] The trailer brake system valve mold has the advantages that the trailer brake system valve mold has a reasonable structure design, a branch sprue connected with the main sprue is designed at the cavity end face corresponding to the side end where the core is inserted, the branch sprue is circumferentially arranged downwards from the front end of the side where the valve core is inserted, and the branch sprue provides feeding for the cavity of the side end from downwards to upwards, effectively fills the metal liquid of the side end, ensures the pressure, reduces the generation of shrinkage holes, and effectively ensures the forming quality of the trailer brake system valve. BRIEF DESCRIPTION OF DRAWINGS

[0016] The utility model is further described below in combination with the drawings and embodiments.

[0017] Figure 1 is a structural schematic view of the optimal embodiment of the utility model.

[0018] Figure 2 is a structural schematic view of the optimal embodiment of the utility model after removing the fixed mold.

[0019] Figure 3 is Figure 2 is an enlarged view of the section A-A.

[0020] Figure 4 is a perspective view of the optimal embodiment of the utility model after removing the fixed mold.

[0021] Figure 5 is a perspective view of the optimal embodiment of the utility model after removing the fixed mold and the core.

[0022] Figure 6 is Figure 5 is an enlarged view of the position B.

[0023] In the figure, 1 is a movable mold, 2 is a fixed mold, 3 is a sub-runner block, 4 is an auxiliary runner block, 5 is an auxiliary pressurized gate, 6 is a valve peripheral gate, 7 is a main runner block, 8 is a valve bottom gate, 9 is a planar branch gate, 10 is a peripheral gate, 11 is an arc-shaped transition, 12 is a feeding gate, 13 is a guide slope, and 14 is a core. DETAILED DESCRIPTION

[0024] The utility model will be further described in detail in combination with the drawings. These drawings are all simplified schematic views, and only schematically illustrate the basic structure of the utility model, so that they only show the structure, direction and reference (for example, up, down, left, right, etc.) related to the utility model, which can only be used to help describe the features in the drawings. Therefore, the following detailed description is not used in a limiting sense, and the scope of the claimed subject matter is only defined by the appended claims and their equivalents.

[0025] As Figures 1 to 5 shown in the figure, the utility model discloses a trailer brake system valve mold which is the optimal embodiment.

[0026] As Figure 1 shown, the mold is used for the die casting forming of the valve of the trailer brake system, and comprises a movable mold 1 and a fixed mold 2, and a cavity and a gate system are formed after the movable mold 1 and the fixed mold 2 are closed. The cavity is provided with a core 14 used for corresponding inner surface forming of the valve. In the embodiment, the valve end face position inserted with the core 14 is arranged as the front end of the valve, and the valve end face position without the core 14 insertion is arranged as the rear end of the valve.

[0027] Specifically, the gating system comprises an outer gate and a main gate, the outer gate has a pressure metal liquid access at an outer end and is communicated with the main gate at an inner end. The main gate is divided into two paths, which are a valve bottom gate 8 and a valve peripheral gate 6. The valve bottom gate 8 is communicated with the cavity at the rear end of the valve. The valve peripheral gate 6 is communicated with the cavity corresponding to the valve peripheral side wall. The valve peripheral gate 6 has a branch at the position of the access to the front end of the cavity, and the branch is an auxiliary pressurizing gate 5, the end of the auxiliary pressurizing gate 5 is communicated with the cavity at the front end of the valve from bottom to top.

[0028] In the branch process of the gate, the flow is divided by the protruding design of the flow dividing block on the bottom surface of the gate. The flow dividing block is usually designed as a block structure with a cross section similar to a rhombus.

[0029] As shown in the drawings, Figure 2 The main gate is provided with a main flow dividing block 7 to divide the gate into two paths; the valve peripheral gate 6 is provided with a secondary flow dividing block 3 at the inlet communicated with the valve peripheral side wall, the secondary flow dividing block 3 divides the pressure metal liquid flowing into the cavity corresponding to the valve peripheral side wall into two parts, and the secondary flow dividing block 3 is located at the position of 1 / 2 of the axial length of the valve. The front end of the valve peripheral gate 6 corresponding to the position of the secondary flow dividing block 3 is provided with an auxiliary flow dividing block 4 to divide the gate into the auxiliary pressurizing gate 5.

[0030] As shown in the drawings, Figures 3 to 6 In the design of the auxiliary pressurizing gate 5, the auxiliary pressurizing gate 5 comprises a planar branch gate 9, a circumferential gate 10 and a feeding gate 12 communicated in sequence. The planar branch gate 9, the circumferential gate 10 and the feeding gate 12 are communicated in sequence and smoothly without any obstruction. The planar branch gate 9 is located in the same plane as the valve peripheral gate 6, and the planar branch gate 9 extends to the front end of the valve after being branched from the valve peripheral gate 6.

[0031] The circumferential gate 10 is arranged in an L-shaped structure, wherein the upper end of the vertical part of the L-shaped structure is connected with the end of the planar branch gate 9, the end of the horizontal part of the L-shaped structure is connected with the feeding gate 12, and the vertical part and the horizontal part of the L-shaped structure are connected through an arc transition. Through the arc transition 11, the energy loss of the pressure metal liquid in the flow turning process can be effectively reduced, so that the kinetic energy in the pressure metal liquid can be better preserved in the conveying process, thereby reducing the kinetic energy loss for filling the cavity.

[0032] The feeding gate 12 is located at the front end of the valve and below the valve cavity. The feeding gate 12 is communicated with the valve cavity upward through a feeding port. The bottom surface of the feeding port is a guiding inclined surface 13 inclined upward. When the pressure metal liquid flows through the guiding inclined surface 13, the cross-sectional area of the flow port gradually decreases along the inclination of the guiding inclined surface 13, thereby generating a certain pressurizing effect on the flowing pressure metal liquid, ensuring the pressure of the pressure metal liquid entering the cavity, and further reducing the shrinkage hole phenomenon caused by insufficient pressure.

[0033] The trailer brake system valve mold designed in this way, aiming at the problem of shrinkage caused by pressure metal liquid pressure loss existing in one side end, sets auxiliary pressurizing gate 5 in the setting of the gate system, reasonably uses the mold space, feeds from the lower end of the valve body from bottom to top after circumferential feeding of the valve body. Among them, the planar branch gate 9 is responsible for leading out the pressure metal liquid from the valve circumferential gate 6, the circumferential gate 10 is used for feeding around the valve downward, and the feeding gate 12 is responsible for feeding from bottom to top for the valve side end finally. The valve body side end can be provided with pressurized feeding in the limited space, and the core 14 of the side end can be pushed in without affecting the side end, which can effectively reduce the shrinkage phenomenon generated in the die casting process and effectively improve the die casting quality of the valve.

[0034] Based on the above ideal embodiments of the present application, through the above description, relevant personnel can make various changes and modifications without deviating from the technical idea of the present application. The technical scope of the present application is not limited to the content in the specification, and must be determined according to the scope of claims.

Claims

1. A trailer brake system valve die for die casting a valve of a trailer brake system, comprising a movable die (1) and a fixed die (2), said movable die (1) and said fixed die (2) forming a cavity and a gating system when closed, said cavity being provided with a core (14) for forming an inner surface of the valve, characterized in that: The runner system comprises an outer runner and a main runner, the outer runner is connected with the pressure metal liquid at the outer end, and the inner end is communicated with the main runner; The main runner is divided into two paths, the valve bottom runner (8) and the valve peripheral runner (6); the valve bottom runner (8) is communicated with the cavity of the valve shaft core (14) inserted side end, and the valve peripheral runner (6) is communicated with the cavity corresponding to the valve peripheral side wall. The valve peripheral runner (6) has a branch at the position of the type cavity front end, which is an auxiliary pressure runner (5), and the auxiliary pressure runner (5) is communicated with the cavity of the valve shaft core (14) inserted side end from bottom to top.

2. The trailer brake system valve mold of claim 1, wherein: The auxiliary pressure runner (5) comprises a plane branch runner (9), a peripheral runner (10) and a feeding runner (12) communicated in sequence; The plane branch runner (9) is located in the same plane with the valve peripheral runner (6), and the plane branch runner (9) extends to the side end of the valve shaft core (14) inserted after being branched from the valve peripheral runner (6); The peripheral runner (10) is located at the end of the valve shaft core (14) inserted side in the valve shaft direction, and is arranged around the valve peripheral side wall; The feeding runner (12) is located at the end of the valve shaft core (14) inserted side in the valve shaft direction, and is located below the valve cavity, and is communicated with the valve cavity through the feeding port.

3. The trailer brake system valve mold of claim 2, wherein: The peripheral runner (10) is arranged in L-shaped structure, the upper end of the vertical part of the L-shaped structure is connected with the end of the plane branch runner (9), the end of the horizontal part of the L-shaped structure is connected with the feeding runner (12), and the vertical part and the horizontal part of the L-shaped structure are connected through the arc transition.

4. The trailer brake system valve mold of claim 3, wherein: The bottom surface of the feeding port is an upward guiding slope (13).

5. The trailer brake system valve mold of claim 1, wherein: The main runner is provided with a main flow dividing block (7) to divide the runner into two paths; The valve peripheral runner (6) is provided with a secondary flow dividing block (3) at the inlet communicated with the valve peripheral side wall, the secondary flow dividing block (3) divides the pressure metal liquid flowing into the cavity corresponding to the valve peripheral side wall of the valve peripheral runner (6) into two parts, and the secondary flow dividing block (3) is located at the position of 1 / 2 of the valve shaft length.

6. The trailer brake system valve mold of claim 5, wherein: The front end of the valve peripheral runner (6) corresponding to the position of the secondary flow dividing block (3) is provided with an auxiliary flow dividing block (4) to divide the runner into the auxiliary pressure runner (5).

Images