Die-casting die locking mechanism

Abstract

The utility model relates to a die-casting die locking mechanism which comprises a locking plate (1), a locking rod (2), a locking block (3) and a telescopic power device, the locking plate (1) is horizontally arranged, fixing rods (11) are arranged on the front side and the rear side of the locking plate (1), and a first locking hole is formed in the locking plate (1). The upper end of the fixing rod (11) is fixedly connected with the locking plate (1), the lower end of the fixing rod (11) is installed on a die-casting platform, and the locking plate (1) is supported above the die-casting platform. The first locking hole is vertically formed, the locking rod (11) is arranged in the first locking hole in a sliding mode, the locking block (3) is fixedly installed on the movable mold, and a second locking hole is formed in the locking block (3). And the telescopic power device is fixedly arranged on the locking plate (1), is connected with the locking rod and is used for pushing the lower end of the locking rod to be inserted into the second locking hole during mold closing and pulling the lower end of the locking rod out of the second locking hole during mold opening. According to the utility model, the movable mold can be locked and is prevented from loosening under high pressure.

Description

Technical Field

[0001] The utility model relates to a die-casting die locking mechanism, in particular to the structure of the die-casting die locking mechanism. Background Art

[0002] The die casting mold is a mold used to produce die castings. If the die casting mold is an integrated structure, after the die casting is die-cast, the die casting with a complex structure or shape cannot be demolded by opening the mold. Figure 5 As shown, the existing die-casting mold 8 generally includes a fixed mold 82, a movable mold 81 and a die-casting platform 83. The fixed mold 82 is fixed on the die-casting platform 83. The sprue of the movable mold 81 is connected to the nozzle or pressure chamber of the die-casting machine. The mold can be opened and closed on the die-casting platform 83. When the mold is closed, the movable mold 81 and the fixed mold 82 are surrounded to form a cavity. The structure of the cavity is designed according to the shape and structure of the die-casting part. When the mold is opened, as shown in FIG. Figure 4 As shown, the movable mold 81 and the fixed mold 82 are separated to realize the demoulding of the die casting.

[0003] In the die-casting process, the dynamic mold is a key component, and its operating stability and accuracy directly affect the quality and production efficiency of die-cast products. However, when the existing die-casting machine is running, due to the high die-casting pressure, for example, the die-casting pressure of automotive die-casting parts needs to be at least 4000T to meet production needs. Moreover, in actual production, in order to reduce the hidden danger of pores inside the die-casting parts and ensure the mechanical properties of the die-casting parts, the actual die-casting pressure is usually adjusted to be slightly larger than the designed die-casting pressure.

[0004] In addition, during the mass production of die castings, the long-term reciprocating motion of the movable mold will cause the movable mold itself to wear and cause the movable mold to loosen.

[0005] The above reasons will cause the movable die position to have problems of unstable fixation and poor displacement accuracy, resulting in poor parameter control accuracy of the die-casting process, causing changes in the shape, structure and size of the die-casting, affecting the quality of the die-casting, and making the die-casting products unable to be assembled and used normally.

[0006] The utility model aims to solve the problem that the movable mold of the existing die-casting mold has unstable fixation and poor displacement accuracy under a relatively large die-casting pressure, which affects the quality of the die-casting parts. Utility Model Content

[0007] In order to solve the above problems, the utility model provides a die-casting mold locking mechanism, including a locking plate 1, a locking rod 2, a locking block 3 and a telescopic power device, wherein the locking plate 1 is arranged horizontally, and a fixing rod 11 is arranged on the front and rear sides, and a first locking hole 12 that matches the locking rod 2 and is transparent is arranged on the locking plate 1. The upper end of the fixing rod 11 is fixedly connected to the locking plate 1, and the die-casting mold includes a die-casting platform and a movable mold, and the lower end of the fixing rod is installed on the die-casting platform to support the locking plate 1 above the die-casting platform.

[0008] The first locking hole 12 is vertically arranged, the locking rod 2 is slidably arranged in the first locking hole 12, the locking block 3 is used to be fixedly installed on the movable mold, and the position corresponding to the first locking hole 12 on the locking block 3 is provided with a second locking hole 32 matching the locking rod 2. The telescopic power device is fixedly arranged on the locking plate 1 and connected to the locking rod 2, and is used to push the lower end of the locking rod 2 to insert into the second locking hole 32 when the mold is closed, and to pull the lower end of the locking rod 2 out of the second locking hole 32 when the mold is opened.

[0009] When the utility model is used, the lower end of the fixing rod 11 is mounted on the die-casting platform, so that the locking plate 1 is located above the movable mold when the mold is closed, and a space for the movable mold to slide is formed between the locking plate 1 and the die-casting platform, and the locking block 3 is fixedly mounted on the movable mold, so that the position of the second locking hole 32 on the locking block 3 corresponds to the position of the first locking hole 12 on the locking plate 1. When the mold is closed, the locking rod 2 is pushed by the telescopic power device to slide downward along the first locking hole 12 until the lower end is inserted into the second locking hole 32 to lock the movable mold. When the mold is opened, the lower end of the locking rod 2 is pulled out of the second locking hole 32 by the telescopic power device.

[0010] The utility model sets a locking plate 1 and a locking block 3, sets the locking plate 1 above the die-casting platform through a fixing rod 11, sets a first locking hole 12 on the locking plate 1, and a locking rod 2 can be slidably set in the first locking hole 12, and the locking block 3 is fixedly installed on the movable mold, and a second locking hole 32 is set on the locking block 3. A telescopic power device is fixedly set on the locking plate 1. When the mold is closed, the lower end of the locking rod 2 is pushed by the telescopic power device to be inserted into the second locking hole 32, so as to lock the movable mold and prevent the movable mold from loosening under high pressure, thereby solving the problem of unstable fixing of the movable mold of the existing die-casting mold.

[0011] Preferably, the telescopic power device is a telescopic cylinder 4, which is vertically arranged above the locking plate 1, and the cylinder body 41 of the telescopic cylinder 4 is fixedly connected to the locking plate 1 through a connecting rod 43, and the end of the piston rod 42 of the telescopic cylinder 4 is fixedly connected to the locking rod 2.

[0012] Preferably, the lower end of the locking rod 2 is hemispherical, which can facilitate the insertion of the locking rod 2 into the second locking hole 32.

[0013] Preferably, a guide device 5 is further included, and the guide device 5 includes a slide rail 51 and a slider 52. Support rods 53 are provided on the front and rear sides of the slide rail 51, and the right end is fixedly connected to the locking plate 1. The upper end of the support rod 53 is fixedly connected to the slide rail 51, and the lower end is used to be installed on the die-casting platform to support the slide rail 51 above the die-casting platform. The slider 52 is slidably arranged on the slide rail 51, and a connector 6 is provided at the bottom of the slider 52, which is fixedly connected to the movable mold through the connector 6.

[0014] A guide device 5 is provided, and a slide rail 51 is provided above the die-casting platform through a support rod 53. A slider 52 is slidably provided on the slide rail 51 and fixedly connected to the movable mold through a connecting piece 6. Through the cooperation of the slider 52 and the slide rail 51, the movable mold can be guided and limited, so that the displacement of the movable mold under high pressure is kept stable, thereby improving the displacement accuracy of the movable mold.

[0015] Preferably, a locking cylinder 13 is further included, which matches the locking rod 2 and is vertically arranged at the bottom of the locking plate 1 and below the first locking hole 12 .

[0016] Preferably, the fixing rod 11 and the support rod 53 are both provided with a fixing plate 7 at their lower ends. The fixing plate 7 is provided with a fixing hole. A fixing bolt 71 is provided in the fixing hole. The fixing bolt 71 is used to fix the fixing plate 7 to the die-casting platform.

[0017] By setting a fixing plate 7 at the lower end of the fixing rod 11 and the support rod 53, setting a fixing hole on the fixing plate 7, inserting the fixing bolt 71 into the fixing hole, and fixing the fixing plate 7 to the die-casting platform, the firmness of the connection between the locking plate 1 and the slide rail 51 and the die-casting platform can be enhanced, and it is convenient to disassemble and overhaul the equipment.

[0018] Preferably, the connecting member 6 includes a connecting plate 61 and a connecting bolt 62. The connecting plate 61 is vertically arranged, and the upper end is fixedly connected to the slider 52. A connecting hole is arranged on the connecting plate 61. The connecting bolt 62 is inserted into the connecting hole to fix the connecting plate 61 to the movable mold.

[0019] The connecting member 6 includes a connecting plate 61 and a connecting bolt 62. The upper end of the connecting plate 61 is fixedly connected to the slider 52. The connecting plate 61 is fixedly connected to the movable mold by the connecting bolt 62, which can enhance the firmness of the connection between the slider 52 and the movable mold and facilitate disassembly and maintenance of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 .Schematic diagram of the overall structure of the die-casting mold clamping mechanism;

[0021] Figure 2 .Schematic diagram of the cross section of the locking plate and the locking block;

[0022] Figure 3 . Figure 1Schematic diagram of the AA section;

[0023] Figure 4 . Schematic diagram of the working state of the die-casting mold locking mechanism when the mold is opened;

[0024] Figure 5 . Schematic diagram of the working status of the clamping mechanism of the die-casting mold when closing the mold.

[0025] In the figure, 1. locking plate, 11. fixing rod, 12. first locking hole, 13. locking cylinder, 2. locking rod, 3. locking block, 32. second locking hole, 4. telescopic cylinder, 41. cylinder body, 42. piston rod, 43. connecting rod, 5. guide device, 51. slide rail, 52. slider, 53. support rod, 6. connecting piece, 61. connecting plate, 62. connecting bolt, 7. fixing plate, 71. fixing bolt, 8. die-casting mold, 81. movable mold, 82. fixed mold, 83. die-casting platform. DETAILED DESCRIPTION

[0026] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0027] like Figure 1 and Figure 2 As shown, the die-casting mold locking mechanism includes a locking plate 1, a locking rod 2, a locking block 3, a telescopic power device and a guide device 5. The locking plate 1 is horizontally arranged, and fixed rods 11 are arranged on the front and rear sides. The locking plate 1 is provided with a first locking hole 12 that matches the locking rod 2 and is transparent, and the first locking hole 12 is vertically arranged.

[0028] The die-casting mold 8 includes a fixed mold 82 , a movable mold 81 and a die-casting platform 83 . The fixed mold 82 is fixed on the die-casting platform 83 , and the movable mold 81 can move on the die-casting platform 83 to open and close the mold.

[0029] The locking plate 1 is provided with a first locking hole 12 which matches the locking rod 2 and is transparent, wherein the matching means that the inner diameter of the first locking hole 12 is equal to or slightly larger than the diameter of the locking rod 2, so that the locking rod 2 can be inserted into the first locking hole 12 and slide in the first locking hole 12, and the outer wall of the locking rod 2 fits with the inner wall of the first locking hole 12.

[0030] A locking cylinder 13 is disposed at the bottom of the locking plate 1 . The locking cylinder 13 matches the locking rod 2 and is vertically disposed at the bottom of the locking plate 1 and below the first locking hole 12 .

[0031] The locking cylinder 13 matches the locking rod 2, wherein the matching means that the inner diameter of the locking cylinder 13 is equal to or slightly larger than the diameter of the locking rod 2, so that the locking rod 2 can be inserted into the locking cylinder 13 and slide in the locking cylinder 13, and the outer wall of the locking rod 2 fits with the inner wall of the locking cylinder 13.

[0032] The upper end of the fixing rod 11 is fixedly connected to the locking plate 1, and the lower end is used to be installed on the die-casting platform, supporting the locking plate 1 above the die-casting platform so that the locking plate 1 is located above the movable mold when the mold is closed, and a space for the movable mold to slide is formed between the locking plate 1 and the die-casting platform.

[0033] The locking block 3 is used to be fixedly installed on the top of the movable mold. In this embodiment, the locking block 3 is fixedly connected to the movable mold by welding. In other embodiments, it can also be fixed by bolt connection.

[0034] The position of the locking block 3 corresponding to the first locking hole 12 is provided with a second locking hole 32 matching the locking rod 2, and the second locking hole 32 is vertically arranged. The position of the locking block 3 corresponding to the first locking hole 12 means that when the mold is closed, the locking block 3 is located below the locking plate 1 and the position on the locking block 3 is directly opposite to the first locking hole 12.

[0035] A second locking hole 32 matching the locking rod 2 is provided at the position of the locking block 3 corresponding to the first locking hole 12, wherein the matching means that the inner diameter of the second locking hole 32 is equal to or slightly larger than the diameter of the locking rod 2, so that the locking rod 2 can be slidably inserted into the second locking hole 32, and the outer wall of the locking rod 2 fits with the inner wall of the second locking hole 32.

[0036] The locking rod 2 is vertically arranged and slidably arranged in the first locking hole 12, and the lower end of the locking rod 2 is hemispherical. The lower end of the locking rod 2 is arranged to be hemispherical to facilitate the locking rod 2 to be inserted into the second locking hole 32.

[0037] The telescopic power device is a telescopic cylinder 4, which is vertically arranged above the locking plate 1. The cylinder body 41 of the telescopic cylinder 4 is fixedly connected to the locking plate 1 through a connecting rod 43. The end of the piston rod 42 of the telescopic cylinder 4 is fixedly connected to the upper end of the locking rod 2. When the mold is closed, the lower end of the locking rod 2 is pushed to insert into the second locking hole 32 to lock the movable mold to prevent the movable mold from loosening under a large die-casting pressure state, so that the movable mold of the die-casting mold remains stable. When the mold is opened, the lower end of the locking rod 2 is pulled out from the second locking hole 32.

[0038] like Figure 1 and Figure 3 As shown, the guide device 5 includes a slide rail 51 and a slider 52 . Support rods 53 are provided on the front and rear sides of the slide rail 51 , and the right end of the slide rail 51 is fixedly connected to the locking plate 1 .

[0039] The upper end of the support rod 53 is fixedly connected to the slide rail 51, and the lower end is used to be installed on the die-casting platform to support the slide rail 51 above the die-casting platform. A space for the movable mold to slide is formed between the slide rail 51 and the die-casting platform.

[0040] The slider 52 is slidably disposed on the slide rail 51 , and a connecting member 6 is disposed at the bottom of the slider 52 , which is fixedly connected to the movable mold via the connecting member 6 .

[0041] A guide device 5 is provided, and a slide rail 51 is provided above the die-casting platform through a support rod 53. A slider 52 is slidably provided on the slide rail 51 and fixedly connected to the movable mold through a connecting piece 6. Through the cooperation of the slider 52 and the slide rail 51, the movable mold can be guided and limited, so that the displacement of the movable mold under high pressure is kept stable, thereby improving the displacement accuracy of the movable mold.

[0042] The connecting member 6 includes a connecting plate 61 and a connecting bolt 62 . The connecting plate 61 is vertically arranged, and the upper end thereof is fixedly connected to the slider 52 . A connecting hole is arranged on the connecting plate 61 .

[0043] The connecting bolt 62 is inserted into the connecting hole to fix the connecting plate 61 with the movable mold. The connecting plate 61 is fixedly connected with the movable mold by the connecting bolt 62, so that the firmness of the connection between the slider 52 and the movable mold can be enhanced, and it is convenient to disassemble and overhaul the equipment.

[0044] The lower ends of the fixing rod 11 and the support rod 53 are both provided with a fixing plate 7, and the fixing plate 7 is provided with a fixing hole, and a fixing bolt 71 is provided in the fixing hole, and the fixing bolt 71 fixes the fixing plate 7 to the die-casting platform. By fixing the fixing plate 7 to the die-casting platform with the fixing bolt 71, the firmness of the connection between the locking plate 1 and the slide rail 51 and the die-casting platform can be enhanced, and it is convenient to disassemble and overhaul the equipment.

[0045] When the utility model is used, Figure 4 As shown, the lower end of the support rod 53 is mounted on the die-casting platform 83, so that the extension direction of the slide rail 51 is the same as the moving direction of the movable mold 81. The lower end of the fixed rod 11 is mounted on the die-casting platform 83, so that the locking plate 1 is located above the movable mold 81 when the mold is closed, and a space for the movable mold 81 to slide is formed between the slide rail 51, the locking plate 1 and the die-casting platform 83. The locking block 3 is welded and fixed to the top of the movable mold 81, so that the position of the second locking hole 32 on the locking block 3 corresponds to the position of the first locking hole 12 on the locking plate 1. Figure 5 As shown, when closing the mold, the telescopic power device is used to push the locking rod 2 to slide downward along the first locking hole 12 until the lower end is inserted into the second locking hole 32 to lock the movable mold 81. When opening the mold, the telescopic power device is used to pull the lower end of the locking rod 2 out of the second locking hole 32.

[0046] The utility model arranges a locking plate 1 and a locking block 3, arranges the locking plate 1 above the die-casting platform, arranges a first locking hole 12 on the locking plate 1, and a locking rod 2 can be slidably arranged in the first locking hole 12, and the locking block 3 is fixedly installed on the movable mold, and a second locking hole 32 is arranged on the locking block 3. A telescopic power device is fixedly arranged on the locking plate 1. When the mold is closed, the lower end of the locking rod 2 is pushed by the telescopic power device to be inserted into the second locking hole 32 to lock the movable mold to prevent the movable mold from loosening under high pressure, so that the movable mold of the die-casting mold can be accurately displaced and kept fixed when the mold is closed.

[0047] A guide device 5 is provided, and a slide rail 51 is provided above the die-casting platform through a support rod 53. A slider 52 is slidably provided on the slide rail 51 and fixedly connected to the movable mold through a connecting piece 6. Through the cooperation of the slider 52 and the slide rail 51, the movable mold can be guided and limited, so that the displacement of the movable mold under high pressure is kept stable, thereby improving the displacement accuracy of the movable mold.

[0048] It should be noted that the above-mentioned embodiments illustrate rather than limit the invention and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims.

Claims

1. Die-casting mold clamping mechanism, characterized in that: It comprises a locking plate (1), a locking rod (2), a locking block (3) and a telescopic power device. The locking plate (1) is arranged horizontally, and fixing rods (11) are arranged on the front and rear sides; a first locking hole (12) which matches the locking rod (2) and is transparent is arranged on the locking plate (1); The upper end of the fixing rod (11) is fixedly connected to the locking plate (1); the die-casting mold comprises a die-casting platform and a movable mold; the lower end of the fixing rod (11) is mounted on the die-casting platform to support the locking plate (1) above the die-casting platform; The first locking hole (12) is arranged vertically; The locking rod (2) is slidably disposed in the first locking hole (12); The locking block (3) is used for being fixedly mounted on the movable mold, and a second locking hole (32) matching the locking rod (2) is provided at a position on the locking block (3) corresponding to the first locking hole (12); The telescopic power device is fixedly arranged on the locking plate (1) and connected to the locking rod (2) and is used to push the lower end of the locking rod (2) to be inserted into the second locking hole (32) when the mold is closed, and to pull the lower end of the locking rod (2) out of the second locking hole (32) when the mold is opened.

2. The die-casting mold clamping mechanism according to claim 1, characterized in that: The telescopic power device is a telescopic oil cylinder (4). The telescopic oil cylinder (4) is vertically arranged above the locking plate (1); the cylinder body (41) of the telescopic oil cylinder (4) is fixedly connected to the locking plate (1) via a connecting rod (43); and the end of the piston rod (42) of the telescopic oil cylinder (4) is fixedly connected to the locking rod (2).

3. The die-casting mold clamping mechanism according to claim 2, characterized in that: The lower end of the locking rod (2) is hemispherical.

4. The die-casting mold clamping mechanism according to claim 3, characterized in that: It also includes a guide device (5), The guide device (5) comprises a slide rail (51) and a slide block (52). Support rods (53) are provided on the front and rear sides of the slide rail (51), and the right end is fixedly connected to the locking plate (1); The upper end of the support rod (53) is fixedly connected to the slide rail (51), and the lower end is used to be mounted on the die-casting platform to support the slide rail (51) above the die-casting platform; The slider (52) is slidably disposed on the slide rail (51), and a connecting piece (6) is disposed at the bottom of the slider (52), which is fixedly connected to the movable mold via the connecting piece (6).

5. The die-casting mold clamping mechanism according to claim 4, characterized in that: Also includes a locking cylinder (13), The locking cylinder (13) matches the locking rod (2), and is vertically arranged at the bottom of the locking plate (1), below the first locking hole (12).

6. The die-casting mold clamping mechanism according to claim 5, characterized in that: The lower ends of the fixing rod (11) and the supporting rod (53) are both provided with fixing plates (7); The fixing plate (7) is provided with a fixing hole, in which a fixing bolt (71) is provided, and the fixing plate (7) is fixedly connected to the die-casting platform via the fixing bolt (71).

7. The die-casting mold clamping mechanism according to claim 6, characterized in that: The connecting member (6) comprises a connecting plate (61) and connecting bolts (62). The connecting plate (61) is arranged vertically, and the upper end is fixedly connected to the slider (52), and a connecting hole is arranged on the connecting plate (61); The connecting bolts (62) are inserted into the connecting holes to fix the connecting plate (61) to the movable mold.

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