Inclined hole core-pulling forming die

Abstract

The utility model provides an inclined hole core-pulling forming die, which is used for forming an inverted buckle of a product, and comprises a movable die and a fixed die, the fixed die is provided with a pouring gate, a forming cavity communicated with the pouring gate is arranged between the movable die and the fixed die, the movable die is fixedly connected with an oil cylinder, a telescopic rod of the oil cylinder is fixedly connected with a driving block, and the driving block is fixedly connected with the movable die. The driving block is matched with a core pulling assembly, and the core pulling assembly drives a product to form an inclined hole.

Description

Technical Field

[0001] The utility model relates to the field of die casting moulds, in particular to an inclined hole core pulling moulding mould. Background Art

[0002] For existing die-casting molded products, if the molded product has undercuts along the direction of the moving and fixed molds, the blank can only be made into a special-shaped hole (pin collision to achieve inclined hole forming), and then CNC completes the final shape processing.

[0003] There are two problems with products processed in this way. The first is that after the product is formed, the special-shaped holes need to be processed manually, resulting in a large amount of manpower and material resources.

[0004] The second aspect is that when artificially processing special-shaped holes, the special-shaped holes need to be secondary molded to obtain inclined holes, resulting in low processing accuracy of the inclined holes, and the strength of the inclined holes is lower than that of the inclined holes formed once. Utility Model Content

[0005] In order to solve the above technical problems, the utility model proposes an inclined hole core-pulling molding mold for undercut molding of products, including: a movable mold and a fixed mold, the fixed mold is provided with a casting port, a molding cavity connected to the casting port is provided between the movable mold and the fixed mold, the movable mold is fixedly connected to an oil cylinder, the telescopic rod of the oil cylinder is fixedly connected to a driving block, the driving block is equipped with a core-pulling assembly, and the core-pulling assembly drives the inclined hole molding of the product.

[0006] Preferably, the core pulling assembly includes: two parallel plates arranged on the movable mold, the two parallel plates are provided with driving grooves for driving the movement of the drive block, the driving block is matched with a core pulling block, the parallel plates are provided with movable grooves for movement with the core pulling block, and the end of the core pulling block is fixedly connected with a core pulling pin that cooperates with the inclined hole.

[0007] Preferably, the driving block is provided with an inclined surface, the inclined surface is provided with a guide rail, the core pulling block is provided with a displacement groove cooperating with the guide rail, the oil cylinder drives the driving block to move and drives the guide rail to cooperate with the displacement groove, so that the core pulling block drives the core pulling pin to leave the inclined hole of the product.

[0008] Preferably, the guide rail is a dovetail guide rail, and the displacement groove is a dovetail groove.

[0009] Preferably, the inclined surface is provided with a low point and a high point, and when the core pulling block contacts the low point, the core pulling pin contacts the inclined hole of the product, and when the high point of the inclined surface contacts the core pulling block, the core pulling pin is out of contact with the inclined hole.

[0010] Preferably, the movable mold and the fixed mold are each provided with an exhaust block, the two exhaust blocks are provided with teeth that cooperate with each other, and an exhaust channel that is connected to the molding cavity is provided between the two teeth.

[0011] Preferably, an air inlet communicating with the molding cavity is provided at one end of the exhaust channel, and an air outlet is provided at the other end of the exhaust channel, and the cross-section of the exhaust channel gradually decreases from the air inlet to the air outlet.

[0012] The utility model has the following advantages:

[0013] 1. The inclined hole is formed by the core pulling assembly to reduce the deformation of the inclined hole when the pins collide, and the inclined hole is formed in one step, which reduces the output of manpower and material resources and improves the processing accuracy of the inclined hole.

[0014] 2. By setting teeth on the exhaust block, the exhaust flow rate and temperature can be reduced, thereby improving the safety during processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following briefly introduces the drawings required for describing the embodiments.

[0016] Figure 1 It is a schematic diagram of the overall structure of the oblique hole core pulling forming mold in the embodiment of the utility model;

[0017] Figure 2 It is a partial structural schematic diagram of the inclined hole core pulling forming mold in the embodiment of the utility model;

[0018] Figure 3 The overall structure of the oblique hole core pulling forming mold in the embodiment of the utility model is shown in cross section. Figure 1 ;

[0019] Figure 4 The overall structure of the oblique hole core pulling forming mold in the embodiment of the utility model is shown in cross section. Figure 2 ;

[0020] Figure 5 It is an enlarged view of the local structure of the inclined hole core pulling forming mold in the embodiment of the utility model.

[0021] In the figure: 1, movable mold 2, fixed mold 3, casting port 4, oil cylinder 5, driving block 501, guide rail 6, parallel plate 7, core pulling block 8, core pulling pin 9, exhaust block 901, exhaust channel. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0023] The present invention is further described in detail below in conjunction with embodiments and specific implementation methods.

[0024] Example:

[0025] like Figure 1 , Figure 3 , Figure 4 As shown, an inclined hole core-pulling molding mold is used for undercut molding of products, including: a movable mold 1 and a fixed mold 2, the fixed mold 2 is provided with a casting port 3, a molding cavity connected to the casting port 3 is provided between the movable mold 1 and the fixed mold 2, and the movable mold 1 and the fixed mold 2 are both provided with an exhaust block 9, the two exhaust blocks 9 are provided with teeth that cooperate with each other, and an exhaust channel 901 connected to the molding cavity is provided between the two teeth.

[0026] An air inlet communicating with the molding cavity is disposed at one end of the exhaust channel 901 , and an air outlet is disposed at the other end of the exhaust channel 901 . The cross section of the exhaust channel 901 gradually decreases from the air inlet to the air outlet.

[0027] The casting port 3 is mainly connected to the barrel. The barrel drives the aluminum liquid into the casting port 3 and into the molding cavity. There is a section of gas at the front end of the barrel that needs to be discharged from the molding cavity.

[0028] When internal molding is required, the gas in the molding cavity needs to be driven to be discharged, so the exhaust channel 901 drives the gas to be discharged, but the gas is generally high temperature and high pressure, so a tooth portion is set on the exhaust block 9, and the gas gradually slows down after passing through the tooth portion, and finally when it is discharged from the outlet, the temperature and pressure of the gas will be reduced.

[0029] The movable mold 1 is fixedly connected with an oil cylinder 4, the telescopic rod of the oil cylinder 4 is fixedly connected with a driving block 5, and the driving block 5 is matched with a core pulling component, and the core pulling component drives the product oblique hole to be formed.

[0030] like Figures 1 to 4 As shown, the core pulling assembly includes: two parallel plates 6 arranged on the movable mold 1, the two parallel plates 6 are provided with driving grooves for the movement of the driving block 5, the driving block 5 is matched with a core pulling block 7, the parallel plates 6 are provided with moving grooves for the movement of the core pulling block 7, and the end of the core pulling block 7 is fixedly connected with a core pulling pin 8 that cooperates with the inclined hole.

[0031] The driving block 5 is provided with an inclined surface, on which a guide rail 501 is provided (the guide rail 501 adopts a dovetail guide rail 501), and the core pulling block 7 is provided with a displacement groove (the displacement groove adopts a dovetail groove) matched with the guide rail 501. The oil cylinder 4 drives the driving block 5 to move and drives the guide rail 501 to cooperate with the displacement groove, so that the core pulling block 7 drives the core pulling pin 8 to leave the inclined hole of the product.

[0032] The dovetail groove cooperates with the dovetail guide rail 501 to reduce the possibility of the core-pulling block 7 being separated from the driving block 5 during processing.

[0033] The inclined surface is provided with a low point and a high point. When the core pulling block 7 contacts the low point, the core pulling pin 8 contacts the inclined hole of the product. When the high point of the inclined surface contacts the core pulling block 7, the core pulling pin 8 is out of contact with the inclined hole.

[0034] The low point and high point of the inclined surface of the driving block 5 cooperate with the core pulling block 7, thereby driving the core pulling action of the inclined hole, so that the core pulling pin 8 and the product are successfully demoulded and mass production is achieved.

[0035] like Figures 1 to 5 As shown, when working, the fixed mold 2 is driven to cooperate with the movable mold 1, the core pulling block 7 is coordinated with the driving block 5, the cylinder 4 drives the driving block 5 to move, and drives the core pulling block 7 to move from a high point to a low point, and the core pulling block 7 drives the pulling pin to enter the processing position.

[0036] The aluminum liquid enters the molding cavity from the casting port 3, and the gas in the molding cavity is discharged from the exhaust channel 901. After the product is molded, the cylinder 4 drives the driving block 5 to move, and drives the core pulling block 7 to move from the low point to the high point, and the core pulling block 7 drives the pulling pin to leave the processing position.

[0037] The fixed mold 2 and the movable mold 1 are driven out of the matching state, and the product is demoulded after being formed.

[0038] Therefore, various modifications to these embodiments will be 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 invention.

Claims

1. An inclined hole core-pulling forming mold, used for undercut forming of products, comprising: A movable mold and a fixed mold, wherein the fixed mold is provided with a casting port, and a molding cavity connected to the casting port is provided between the movable mold and the fixed mold, characterized in that the movable mold is fixedly connected with an oil cylinder, the telescopic rod of the oil cylinder is fixedly connected with a driving block, the driving block is matched with a core pulling assembly, and the core pulling assembly drives the product oblique hole to be formed; The core pulling assembly includes: two parallel plates arranged on the movable mold, the two parallel plates are provided with driving grooves for driving the movement of the drive block, the drive block is matched with a core pulling block, the parallel plates are provided with moving grooves that move with the core pulling block, and the end of the core pulling block is fixedly connected with a core pulling pin that cooperates with the inclined hole.

2. The inclined hole core-pulling forming mold according to claim 1, characterized in that: The driving block is provided with an inclined surface, the inclined surface is provided with a guide rail, the core pulling block is provided with a displacement groove cooperating with the guide rail, the oil cylinder drives the driving block to move and drives the guide rail to cooperate with the displacement groove, so that the core pulling block drives the core pulling pin to leave the inclined hole of the product.

3. The inclined hole core-pulling forming mold according to claim 2, characterized in that: The guide rail is a dovetail guide rail, and the displacement groove is a dovetail groove.

4. The inclined hole core-pulling forming die according to claim 3, characterized in that: The inclined surface is provided with a low point and a high point. When the core pulling block contacts the low point, the core pulling pin contacts the inclined hole of the product. When the high point of the inclined surface contacts the core pulling block, the core pulling pin is separated from the contact with the inclined hole.

5. The inclined hole core-pulling forming mold according to claim 1, characterized in that: The movable mold and the fixed mold are both provided with an exhaust block, the two exhaust blocks are provided with teeth that match each other, and an exhaust channel that is connected with the molding cavity is provided between the two teeth.

6. The inclined hole core-pulling forming die according to claim 5, characterized in that: An air inlet communicating with the molding cavity is provided at one end of the exhaust channel, and an air outlet is provided at the other end of the exhaust channel. The cross section of the exhaust channel gradually decreases from the air inlet to the air outlet.

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