Exhaust structure for squeeze casting mold

Abstract

The utility model discloses an exhaust structure for a squeeze casting die, which relates to the technical field of die-casting dies, and comprises a fixed die and a movable die, and further comprises an upper cover body and an exhaust block which are arranged between the fixed die and the movable die and are stacked with each other, the upper cover body is fixedly connected to the bottom of the fixed die, and the exhaust block is fixedly connected to the bottom of the movable die. The exhaust block is fixedly connected to the top of the movable mold, an exhaust groove is formed in the surface, close to the upper cover body, of the exhaust block, one end of the exhaust groove extends towards the side edge of the exhaust block and is opened to form an air outlet, and the other end of the exhaust groove also extends towards the side edge of the exhaust block and is opened to form an air inlet; the position, close to the air outlet, of the exhaust groove is movably connected with a blocking piece used for blocking the exhaust groove, and a driving assembly used for driving the blocking piece to move in the thickness direction of the exhaust block is arranged at the bottom of the exhaust block. Through the arrangement of the structure, the gas displacement is guaranteed, and meanwhile the blocking piece is used for preventing infusion liquid from overflowing out of the whole mold.

Description

Technical Field

[0001] The utility model relates to the technical field of die casting moulds, and more specifically, to an exhaust structure for an extrusion casting mould. Background Art

[0002] A die casting die is a tool for casting metal parts, a tool that completes the die casting process on a dedicated die forging machine.

[0003] When die-casting workpieces are die-cast, the die-casting mold needs good ventilation to avoid bubbles in the product after heat treatment, which affects the product quality. Most of the existing ventilation methods use exhaust grooves on the parting surface of the mold. However, if the exhaust groove is small, the exhaust volume is reduced, which is also easy to cause bubbles. If the exhaust groove is enlarged, it is easy to cause the molten metal to overflow, resulting in waste.

[0004] Therefore, a new solution needs to be proposed to solve this problem. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides an exhaust structure for an extrusion casting mold.

[0006] The technical solution of the utility model is:

[0007] A venting structure for an extrusion casting mold comprises a fixed mold and a movable mold, and also comprises an upper cover body and an exhaust block which are stacked mutually between the fixed mold and the movable mold, wherein the upper cover body is fixedly connected to the bottom of the fixed mold, and the exhaust block is fixedly connected to the top of the movable mold, and an exhaust groove is provided on the surface of the exhaust block close to the upper cover body, one end of the exhaust groove extends toward the side of the exhaust block and opens to form an air outlet, and the other end of the exhaust groove also extends toward the side of the exhaust block and opens to form an air inlet, a sealing member for sealing the exhaust groove is movably connected to the exhaust groove near the air outlet, and a driving component for driving the sealing member to move along the thickness direction of the exhaust block is provided at the bottom of the exhaust block.

[0008] The utility model is further configured that a first through hole for the blocking member to pass through is opened on the exhaust groove, and the aperture of the first through hole is greater than the width of the exhaust groove.

[0009] The utility model is further configured that a gas outlet groove connected to the gas exhaust groove is provided on one side of the gas exhaust block close to the gas outlet, and the cross section of the gas outlet groove is funnel-shaped.

[0010] The utility model is further configured such that the driving assembly includes a cylinder seat fixed to the bottom of the movable mold and a lifting cylinder fixed on the cylinder seat, the output end of the lifting cylinder is fixedly connected to the bottom of the blocking member, and a second through hole for the blocking member to pass through is opened on the movable mold.

[0011] The utility model is further configured such that the output end of the lifting cylinder is fixedly connected to a fixed block, the end of the sealing member away from the exhaust block is fixedly connected to the top of the fixed member, a receiving groove is provided at the bottom of the movable mold, the second through hole is provided on the inner bottom wall of the receiving groove, a first limit block is fixedly connected to the inner bottom wall of the receiving groove, and a third through hole for the limit member to pass through is provided on the first limit block.

[0012] The utility model is further configured that a guide sleeve communicating with the first through hole is fixedly connected to the bottom of the exhaust block, and the blocking member extends into the guide sleeve.

[0013] The beneficial technical effects of the utility model are:

[0014] By setting an exhaust groove and expanding the outlet of the exhaust groove, the exhaust efficiency is ensured; and a blocking piece is set to be driven by a driving component to block the exhaust groove to prevent the molten metal from overflowing from the outside of the mold and causing waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the hidden drive assembly of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the utility model which hides the fixed mold and the movable mold;

[0018] Figure 4 It is an exploded view of the utility model with the fixed mold and the movable mold hidden;

[0019] In the figure, 1, fixed mold; 11, upper cover body; 2, movable mold; 21, exhaust block; 211, exhaust groove; 212, air outlet groove; 213, air inlet; 214, first through hole; 215, guide sleeve; 22, notch; 23, accommodating groove; 231, first limit block; 3, cylinder seat; 31, lifting cylinder; 311, fixed block; 312, blocking member; 4, travel switch; 5, travel limit block. DETAILED DESCRIPTION

[0020] In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the specific implementation methods of the utility model are further described in detail below in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0021] A venting structure for an extrusion casting mold, such as Figure 1-Figure 4As shown, it includes a fixed mold 1 and a movable mold 2, and an upper cover body 11 and an exhaust block 21 are arranged between the fixed mold 1 and the movable mold 2. An exhaust groove 211 is provided on the surface of the exhaust block 21 close to the upper cover body 11. When the upper cover body 11 and the exhaust block 21 are stacked on each other, an exhaust channel is formed between the exhaust groove 211 and the bottom surface of the upper cover body 11, and a blocking member 312 is movably connected to the exhaust block 21 for blocking the exhaust channel.

[0022] A first groove for engaging the upper cover body 11 is provided at the bottom of the fixed mold 1, and the bottom surface of the upper cover body 11 is flush with the bottom surface of the fixed mold 1. A second groove for engaging the exhaust block 21 is provided at the top of the movable mold 2, and the top surface of the exhaust block 21 is flush with the top surface of the movable mold 2. When the movable mold 2 is close to the fixed mold 1 and fits with the fixed mold 1, the upper cover body 11 and the exhaust block 21 fit together, ensuring the stacking effect of the overall structure, and when the blocking piece 312 is blocked, the blocking effect can also be ensured; one end of the exhaust groove 211 extends toward the side of the exhaust block 21 and opens to form an air outlet, and the other end of the exhaust groove 211 is divided into two branches that extend toward the two side surfaces of the exhaust block 21 adjacent to the air outlet and open to form an air inlet 213, so that the cross-section of the exhaust groove 211 is T-shaped, and a first through hole 214 for the blocking piece 312 to pass through is provided on the exhaust groove 211, and the first through hole 2 The aperture of 14 is larger than the width of the exhaust groove 211, the blocking piece 312 is cylindrical, and the blocking piece 312 cooperates with the first through hole 214, so that the aperture of the blocking piece 312 is also larger than the width of the exhaust groove 211, thereby ensuring the sealing effect of the blocking piece 312; an exhaust groove 212 connected to the exhaust groove 211 is provided on the side of the exhaust block 21 close to the air outlet, and the cross-section of the exhaust groove 212 is funnel-shaped, and a notch 22 connected to the second groove is provided on the top surface of the movable mold 2, and is connected to the exhaust groove 212, and the setting of the exhaust groove 212 ensures the exhaust efficiency; a guide sleeve 215 connected to the first through hole 214 is fixedly connected to the bottom of the exhaust block 21, and the blocking piece 312 extends into the guide sleeve 215; the setting of the guide sleeve 215 limits the moving trajectory of the blocking piece 312, so that the movement of the blocking piece 312 is more stable.

[0023] The driving assembly includes a cylinder seat 3 fixed to the bottom of the movable mold 2 and a lifting cylinder 31 fixed to the cylinder seat 3. The output end of the lifting cylinder 31 is fixedly connected to the bottom of the blocking member 312. The movable mold 2 is provided with a second through hole for the blocking member 312 to pass through. The output end of the lifting cylinder 31 is fixedly connected to a fixed block 311. One end of the blocking member 312 away from the exhaust block 21 is fixedly connected to the top of the fixed member. The bottom of the movable mold 2 is provided with a receiving groove 23. The second through hole is provided on the inner bottom wall of the receiving groove 23. The inner bottom wall of the receiving groove 23 is fixedly connected to a first limit block 231 The first limit block 231 is provided with a third through hole for the limit member to pass through, and the lifting cylinder 31 is driven to move the fixed block 311 to drive the blocking member 312 fixed on the fixed block 311 to move, and the fixed block 311 is close to the first limit block 231. When the fixed block 311 touches the first limit block 231, the driving is stopped. At this time, the blocking member 312 passes through the first through hole 214 and extends into the exhaust groove 211. When the upper cover body 11 and the exhaust groove 211 are attached, the blocking member 312 is attached to the bottom surface of the upper cover body 11, thereby completing the blocking of the exhaust groove 211;

[0024] A travel switch 4 is fixedly connected to one side of the cylinder seat 3 at the bottom of the movable mold 2. The travel switch 4 is electrically connected to the lifting cylinder 31 through a PLC controller. A travel limit block 5 that cooperates with the travel switch 4 is fixedly connected to one side of the fixed block 311. The cooperation between the travel switch 4 and the travel limit block 5 is utilized to perform formation monitoring, thereby ensuring the travel effect of the blocking member 312.

[0025] Working principle: The lifting cylinder 31 is used to drive the fixed block 311 to move, thereby driving the blocking piece 312 to move, so that the blocking piece 312 extends into the first through hole 214 and away from the exhaust groove 211, and the exhaust groove 211 is open at this time; when die-casting is performed, the movable mold 2 is close to the fixed mold 1, and the upper cover body 11 is stacked with the exhaust block 21. Since the exhaust groove 211 is open, the molten metal squeezes the air toward the dormitory in the exhaust groove 211. When the molten metal reaches the first through hole 214, the lifting cylinder 31 is driven to insert the blocking piece 312 into the first through hole 214, extend it into the exhaust groove 211, and fit with the bottom surface of the upper cover body 11, thereby sealing the exhaust groove 211 and preventing the molten metal from being discharged from the exhaust groove 211 to the outside of the entire die-casting mold, causing waste; after the die-casting is completed, the lifting cylinder 31 is used to reset the blocking piece 312 and away from the exhaust groove 211, so that the exhaust groove 211 is open.

[0026] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as within the protection scope of the present invention.

Claims

1. An exhaust structure for an extrusion casting mold, comprising a fixed mold (1) and a movable mold (2), characterized in that: The invention also comprises an upper cover body (11) and an exhaust block (21) which are arranged and stacked with each other between the fixed mold (1) and the movable mold (2); the upper cover body (11) is fixedly connected to the bottom of the fixed mold (1); the exhaust block (21) is fixedly connected to the top of the movable mold (2); an exhaust groove (211) is provided on the surface of the exhaust block (21) close to the upper cover body (11); one end of the exhaust groove (211) extends toward the side of the exhaust block (21) and opens to form an air outlet; the other end of the exhaust groove (211) also extends toward the side of the exhaust block (21) and opens to form an air inlet (213); a blocking member (312) for blocking the exhaust groove (211) is movably connected to the position of the exhaust groove (211) close to the air outlet; and a driving component for driving the blocking member (312) to move along the thickness direction of the exhaust block (21) is provided at the bottom of the exhaust block (21).

2. The exhaust structure for squeeze casting mold according to claim 1, characterized in that: The exhaust groove (211) is provided with a first through hole (214) for the blocking member (312) to pass through, and the diameter of the first through hole (214) is greater than the width of the exhaust groove (211).

3. The exhaust structure for squeeze casting mold according to claim 1, characterized in that: An air outlet groove (212) communicating with the air outlet groove (211) is provided on one side of the air outlet block (21) close to the air outlet, and the cross section of the air outlet groove (212) is funnel-shaped.

4. The exhaust structure for squeeze casting mold according to claim 1, characterized in that: The driving assembly comprises a cylinder seat (3) fixed to the bottom of the movable mold (2) and a lifting cylinder (31) fixed to the cylinder seat (3); the output end of the lifting cylinder (31) is fixedly connected to the bottom of the blocking member (312); and a second through hole for the blocking member (312) to pass through is provided on the movable mold (2).

5. The exhaust structure for squeeze casting mold according to claim 4, characterized in that: The output end of the lifting cylinder (31) is fixedly connected to a fixed block (311); one end of the blocking member (312) away from the exhaust block (21) is fixedly connected to the top of the fixed member; a receiving groove (23) is provided at the bottom of the movable mold (2); the second through hole is provided on the inner bottom wall of the receiving groove (23); a first limiting block (231) is fixedly connected to the inner bottom wall of the receiving groove (23); and a third through hole for the limiting member to pass through is provided on the first limiting block (231).

6. The exhaust structure for squeeze casting mold according to claim 1, characterized in that: A guide sleeve (215) communicating with the first through hole (214) is fixedly connected to the bottom of the exhaust block (21), and the blocking member (312) extends into the guide sleeve (215).

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