A vacuum pumping structure for the moving and fixed die valve bodies of an integrated extra-large mold

Abstract

The present invention relates to a vacuum pumping structure for the moving and stationary mold valve bodies of an integrated super-large mold, belonging to the technical field of integrated super-large mold technology. It includes a die-casting assembly, which comprises a first fixed seat, a lower mold, an upper mold, a second fixed seat, and a fixing member. The lower mold is arranged on the top of the first fixed seat, the upper mold is located on the top of the lower mold, the second fixed seat is arranged on the top of the upper mold, and the fixing member is located on one side of the lower mold. By setting a valve core to drive a filter screen to push the die-cast product away from the valve body, it prevents the die-cast product from getting stuck on the surface of the valve body; by setting an air extraction pipe to extract the air in the mold cavity, the residual water vapor of the release agent, etc., it avoids causing poor die-casting filling or porosity in the die-cast part after processing, which will further lead to problems such as unqualified airtightness and leakage of the die-cast product.

Description

Technical Field

[0001] The present invention relates to the technical field of integrated super-large molds, and particularly to a vacuum pumping structure for the moving and fixed mold valve bodies of an integrated super-large mold. Background Art

[0002] A mold is various molds and tools used in industrial production to obtain the required products by methods such as injection molding, blow molding, extrusion, die casting, or forging, smelting, stamping, etc. In the existing molds, air inside the mold cavity during die casting, water vapor remaining from the release agent, etc. can cause poor die casting filling, or pores may appear in the die-cast parts after processing, which will further lead to problems such as unqualified airtightness and leakage of die-cast products. Summary of the Invention

[0003] In view of the above problems, the present invention aims to provide a vacuum pumping structure for the moving and fixed mold valve bodies of an integrated super-large mold to solve the problems that in the existing molds, air inside the mold cavity during die casting, water vapor remaining from the release agent, etc. can cause poor die casting filling, or pores may appear in the die-cast parts after processing, which will further lead to problems such as unqualified airtightness and leakage of die-cast products.

[0004] The technical solution of the present invention is as follows:

[0005] A vacuum pumping structure for the moving and fixed mold valve bodies of an integrated super-large mold includes a die-casting assembly, a first fixing seat, a lower mold, an upper mold, a second fixing seat, and a fixing member. The lower mold is arranged on the top of the first fixing seat, the upper mold is located on the top of the lower mold, the second fixing seat is arranged on the top of the upper mold, and the fixing member is located on one side of the lower mold.

[0006] The first fixing seat is provided for fixing the lower mold, the lower mold is provided for supporting the upper mold, the second fixing seat is provided for fixing the upper mold and driving the upper mold to move up and down, and the fixing member is used to fix the lower mold on the first fixing seat and the upper mold on the bottom of the second fixing seat.

[0007] A vacuum pumping assembly is arranged in the upper mold and includes a feeding member, a discharging member, a vacuum pumping member, an expanding member, a supporting member, and a driving member. The feeding member is arranged in the lower mold, the discharging member is located in the upper mold, the vacuum pumping member is arranged in the discharging member, the expanding member is arranged on the surface of the discharging member, the supporting member is located in the upper mold, and the driving member is arranged on one side of the supporting member.

[0008] By setting the material injection part, materials such as aluminum powder required for die-casting can be injected into the lower mold. The discharging part is used to eject the die-cast finished product from the upper mold. The vacuum pumping part is used to pump out the air inside the mold cavity between the lower mold and the upper mold, as well as the residual water vapor of the mold release agent, to avoid poor die-casting filling or the appearance of air holes in the die-cast parts after processing, which may further lead to problems such as unqualified airtightness and leakage of die-cast products. The expansion part is used to expand the driving part, so that the driving part releases the limit on the discharging part. The supporting part is used to support the driving part, so that the driving part can drive the discharging part to move.

[0009] In a further technical solution, the fixing part includes a fixed base foot and a fixing bolt. The fixed base foot is arranged on one side of the lower mold, and the fixing bolt is located inside the fixed base foot.

[0010] There are eight fixed base feet, which are respectively fixed around the bottom of the lower mold and around the top of the upper mold to fix the lower mold and the upper mold. There are eight fixing bolts, all of which are movably connected inside the fixed base feet.

[0011] In a further technical solution, the fixing part further includes a fixed disk and a fixing nut. The fixed disk is arranged at the end of the fixing bolt, and the fixing nut is located on the surface of the fixing bolt.

[0012] There are eight fixed disks, all of which are fixed at the ends of the fixing bolts. The fixing nut is threadedly connected to the surface of the fixing bolt. When the fixing nut is rotated, the lower mold and the upper mold are respectively fixed on one side of the first fixing seat and the second fixing seat by the fixed disk being clamped in the first fixing seat and the second fixing seat.

[0013] In a further technical solution, the material injection part includes a shot tube and a guide tube. The shot tube is arranged inside the lower mold, the guide tube is located at the end of the shot tube, and a mold cavity is opened at the top of the lower mold.

[0014] There are two shot tubes, which are respectively located on both sides of the mold cavity and can inject materials such as aluminum powder required for die-casting into the mold cavity. There are two guide tubes, both of which are connected to the shot tubes and are used to transport materials such as aluminum powder required for die-casting.

[0015] In a further technical solution, the material injection part further includes a material injection installation tube, an installation nut, and a fixed tube. The material injection installation tube is arranged inside the guide tube, the installation nut is located on the surface of the material injection installation tube, and the fixed tube is arranged at the end of the material injection installation tube.

[0016] The installation pipe is threadedly connected inside the material guiding pipe. The installation nut is fixed on the surface of the installation pipe. The fixed pipe is communicated with the installation pipe. By connecting with the external material conveying pipe through the fixed pipe, materials such as aluminum powder required for die casting can be conveyed into the material guiding pipe through the installation pipe, and the installation pipe is fixed by rotating the installation nut.

[0017] In a further technical solution, the discharging member includes a valve body, a valve core, a first limiting ring, a first spring and a second limiting ring. The valve body is arranged at the bottom of the upper die. The valve core is located inside the valve body. The first limiting ring is arranged on the surface of the valve core. One end of the first spring is located on one side of the first limiting ring. The second limiting ring is arranged at the end of the valve core. A clamping groove is formed on the surface of the valve core.

[0018] The valve body is fixed at the bottom of the upper die. The valve core slides inside the upper die. The first limiting ring is fixed on the surface of the valve core. Both ends of the first spring are respectively fixed on one side of the first limiting ring and the inner wall of the upper die. The second limiting ring is fixed at the end of the valve core. Due to the restoring elastic force of the first spring, the valve core can be ejected from the valve body to push the die-cast product away from the valve body.

[0019] In a further technical solution, the vacuum pumping member includes a filter screen, a connecting pipe and an air extraction pipe. The filter screen is located at the end of the valve core. The connecting pipe is arranged on one side of the filter screen. The air extraction pipe is located inside the valve core.

[0020] The filter screen and the air extraction pipe are threadedly connected through the connecting pipe, and one end of the filter screen and the air extraction pipe is communicated. The other end of the air extraction pipe is connected to a vacuum pump. The filter screen can filter materials such as aluminum powder in the mold cavity, so that the air extraction pipe can extract the air, the residual water vapor of the mold release agent, etc. in the mold cavity, avoiding poor die-casting filling or the appearance of air holes in the die-cast part after processing, which will further lead to problems such as unqualified airtightness and leakage of the die-cast product.

[0021] In a further technical solution, the expanding member includes a fixed column and an expanding pipe. The fixed column is located on the surface of the valve core. The expanding pipe is arranged on one side of the fixed column.

[0022] The fixed column is fixed inside the upper die and slides on the surface of the valve core. The expanding pipe is fixed on one side of the fixed column. A slope is formed on one side of the expanding pipe, which is convenient for expanding the driving member to release the limit on the valve core.

[0023] In a further technical solution, the supporting member includes a supporting column, a third limiting ring and a second spring. The supporting column is arranged inside the upper die. The third limiting ring is located on the surface of the supporting column. One end of the second spring is arranged on one side of the third limiting ring.

[0024] The support column slides within the upper die, the third limiting ring is fixed on the surface of the support column, and both ends of the second spring are respectively fixed on one side of the third limiting ring and the inner wall of the upper die. When the lower die and the upper die come into contact, the lower die presses the support column, causing the support column to move upward. At this time, the third limiting ring presses the second spring.

[0025] In a further technical solution, the driving member includes a fixing frame, a swing rod, a support frame, a support shaft, a third spring, a limiting rod, a limiting push block, and a fourth spring. The fixing frame is arranged on the inner wall of the upper die, the swing rod is located within the fixing frame, the support frame is arranged on one side of the swing rod, the support shaft is located within the support frame, the third spring is arranged on one side of the swing rod, the limiting rod is located on the surface of the support shaft, the limiting push block is arranged on one side of the limiting rod, and the end of the fourth spring is located on one side of the limiting rod.

[0026] The fixing frame is fixed on the inner wall of the upper die. The swing rod is connected to the fixing frame through a rotating shaft. There are two support frames, which are fixed on both sides of the swing rod. There are two support shafts, which are fixed within the two support frames. Both ends of the third spring are respectively fixed on one side of the swing rod and the inner top wall of the upper die. The limiting rod is rotatably connected to the surface of the support shaft. There are two limiting push blocks, which are respectively fixed on one side of the two limiting rods. The limiting push blocks are located within the card slots. Both ends of the fourth spring are respectively fixed on one side of the two limiting rods. When the lower die and the upper die approach, the lower die presses the support column, causing the support column to move upward. At this time, the third limiting ring presses the second spring. The support column presses the swing rod, causing the swing rod to drive the two limiting rods to move. At the same time, the lower die presses the filter screen, causing the filter screen to press the valve core, causing the valve core to move, so that the limiting push block on one side of the limiting rod slides from the surface of the expansion pipe to within the card slot. Through the action of the swing rod, the moving distance of the valve core is greater than that of the support column, so that the filter screen is located within the valve body. When the lower die and the upper die move away from each other, the support column is ejected from the upper die by the restoring elastic force of the second spring. At this time, the swing rod loses the support of the support column and moves under the action of the restoring elastic force of the third spring. At the same time, the valve core moves under the action of the restoring elastic force of the first spring, causing the limiting push block to approach the expansion pipe. Through the inclined surface on one side of the expansion pipe, the limiting push block moves away from the card slot and slides onto the surface of the expansion pipe, so as to release the limit of the valve core by the limiting push block, and the valve core drives the filter screen to push the die-cast product away from the valve body.

[0027] The beneficial effects of the present invention are:

[0028] 1. By arranging for the valve core to drive the filter screen to push the die-cast product away from the valve body, it prevents the die-cast product from getting stuck on the surface of the valve body.

[0029] 2. By setting up an extraction pipe to extract the air in the mold cavity, the residual moisture of the mold release agent, etc., it is possible to avoid poor die-casting filling or the appearance of air holes in the die-cast parts after processing, which will further lead to problems such as unqualified airtightness and leakage of die-cast products. Brief Description of the Drawings

[0030] Figure 1 is the structural schematic diagram of the present invention;

[0031] Figure 2 is the structural schematic diagram of another perspective of the present invention;

[0032] Figure 3 is the structural schematic diagram of the connection of the fixed feet, fixed bolts, fixed disc and fixed nuts of the present invention;

[0033] Figure 4 is the present invention Figure 3 partial enlarged view of the structure at A in;

[0034] Figure 5 is the sectional structural schematic diagram of the upper mold and the lower mold of the present invention;

[0035] Figure 6 is the structure of the present invention Figure 5 partial enlarged view of the structure at B in;

[0036] Figure 7 is the sectional structural schematic diagram of the upper mold and the lower mold of the present invention;

[0037] Figure 8 is the present invention Figure 7 partial enlarged view of the structure at C in;

[0038] Figure 9 is the structural schematic diagram of the connection between the lower mold and the injection pipe of the present invention;

[0039] Figure 10 is the structural schematic diagram of the connection of the injection pipe, the guide pipe, the mounting nut and the fixed pipe of the present invention;

[0040] Figure 11 is the structural schematic diagram of the connection of the injection installation pipe, the mounting nut and the fixed pipe of the present invention;

[0041] Figure 12 is the structural schematic diagram of the connection of the valve core, the first limiting ring and the second limiting ring of the present invention;

[0042] Figure 13 is the structural schematic diagram of the connection between the filter screen and the connecting pipe of the present invention;

[0043] Figure 14 is the structural schematic diagram of the connection of the swing rod, the support frame and the support shaft of the present invention;

[0044] Figure 15It is a schematic diagram of the connection structure of the limit rod, limit push block and fourth spring of the present invention;

[0045] Figure 16 It is a schematic diagram of the connection structure of the fixed column and the expansion tube of the present invention.

[0046] Explanation of reference numerals:

[0047] 100, die-casting assembly; 101, first fixed seat; 102, lower mold; 103, upper mold; 104, second fixed seat; 105, fixing member; 105a, fixing foot; 105b, fixing bolt; 105c, fixing plate; 105d, fixing nut; 200, vacuum pumping assembly; 201, injection member; 201a, injection tube; 201b, guide tube; 201c, injection installation tube; 201d, installation nut; 201e, fixing tube; 202, discharge member; 202a, valve body; 202b, valve core; 202c, first limit ring; 202d, first spring; 202e, second limit ring; 203, vacuum pumping member; 203a, filter screen; 203b, connecting tube; 203c, air extraction tube; 204, expansion member; 204a, fixed column; 204b, expansion tube; 205, support member; 205a, support column; 205b, third limit ring; 205c, second spring; 206, driving member; 206a, fixed frame; 206b, swing rod; 206c, support frame; 206d, support shaft; 206e, third spring; 206f, limit rod; 206g, limit push block; 206h, fourth spring. Detailed implementation manners

[0048] The embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0049] Embodiment 1

[0050] As Figure 1-16 shown, the present invention provides a vacuum pumping structure for the moving and fixed mold valve bodies of an integrated super-large mold, including a die-casting assembly 100, a first fixed seat 101, a lower mold 102, an upper mold 103, a second fixed seat 104 and a fixing member 105. The lower mold 102 is arranged on the top of the first fixed seat 101, the upper mold 103 is located on the top of the lower mold 102, the second fixed seat 104 is arranged on the top of the upper mold 103, and the fixing member 105 is located on one side of the lower mold 102.

[0051] The vacuum pumping assembly 200 is arranged inside the upper mold 103 and includes a material injection part 201, a material discharging part 202, a vacuum pumping part 203, an expansion part 204, a support part 205 and a driving part 206. The material injection part 201 is arranged inside the lower mold 102, the material discharging part 202 is located inside the upper mold 103, the vacuum pumping part 203 is arranged inside the material discharging part 202, the expansion part 204 is arranged on the surface of the material discharging part 202, the support part 205 is located inside the upper mold 103, and the driving part 206 is arranged on one side of the support part 205.

[0052] Specifically, the fixing member 105 includes a fixing foot 105a and a fixing bolt 105b. The fixing foot 105a is arranged on one side of the lower die 102, and the fixing bolt 105b is located inside the fixing foot 105a. The fixing member 105 further includes a fixing plate 105c and a fixing nut 105d. The fixing plate 105c is arranged at the end of the fixing bolt 105b, and the fixing nut 105d is located on the surface of the fixing bolt 105b. The injection member 201 includes an injection pipe 201a and a guide pipe 201b. The injection pipe 201a is arranged inside the lower die 102, and the guide pipe 201b is located at the end of the injection pipe 201a. A mold cavity U is formed at the top of the lower die 102. The injection member 201 further includes an injection installation pipe 201c, an installation nut 201d, and a fixing pipe 201e. The injection installation pipe 201c is arranged inside the guide pipe 201b, the installation nut 201d is located on the surface of the injection installation pipe 201c, and the fixing pipe 201e is arranged at the end of the injection installation pipe 201c. The discharging member 202 includes a valve body 202a, a valve core 202b, a first limiting ring 202c, a first spring 202d, and a second limiting ring 202e. The valve body 202a is arranged at the bottom of the upper die 103, the valve core 202b is located inside the valve body 202a, the first limiting ring 202c is arranged on the surface of the valve core 202b, one end of the first spring 202d is located on one side of the first limiting ring 202c, the second limiting ring 202e is arranged at the end of the valve core 202b, and a clamping groove V is formed on the surface of the valve core 202b. The vacuum pumping member 203 includes a filter screen 203a, a connecting pipe 203b, and an air extraction pipe 203c. The filter screen 203a is located at the end of the valve core 202b, the connecting pipe 203b is arranged on one side of the filter screen 203a, and the air extraction pipe 203c is located inside the valve core 202b. The expansion member 204 includes a fixing column 204a and an expansion pipe 204b. The fixing column 204a is located on the surface of the valve core 202b, and the expansion pipe 204b is arranged on one side of the fixing column 204a. The supporting member 205 includes a supporting column 205a, a third limiting ring 205b, and a second spring 205c. The supporting column 205a is arranged inside the upper die 103, the third limiting ring 205b is located on the surface of the supporting column 205a, and one end of the second spring 205c is arranged on one side of the third limiting ring 205b. The driving member 206 includes a fixing frame 206a, a swing rod 206b, a supporting frame 206c, a supporting shaft 206d, a third spring 206e, a limiting rod 206f, a limiting push block 206g, and a fourth spring 206h. The fixing frame 206a is arranged on the inner wall of the upper die 103, the swing rod 206b is located inside the fixing frame 206a, the supporting frame 206c is arranged on one side of the swing rod 206b, the supporting shaft 206d is located inside the supporting frame 206c, the third spring 206e is arranged on one side of the swing rod 206b, the limiting rod 206f is located on the surface of the supporting shaft 206d, the limiting push block 206g is arranged on one side of the limiting rod 206f, and one end of the fourth spring 206h is located on one side of the limiting rod 206f.

[0053] The working principle and beneficial effects of the above embodiments.

[0054] When the lower die 102 and the upper die 103 approach each other, the lower die 102 presses against the support column 205a, causing the support column 205a to move upward. At this time, the third limiting ring 205b presses against the second spring 205c, and the support column 205a presses against the swing rod 206b, causing the swing rod 206b to drive the two limiting rods 206f to move. At the same time, the lower die 102 presses against the filter screen 203a, causing the filter screen 203a to press against the valve core 202b, causing the valve core 202b to move. As a result, the limiting push block 206g on one side of the limiting rod 206f slides from the surface of the expansion tube 204b into the card slot V. Through the action of the swing rod 206b, the moving distance of the valve core 202b is greater than that of the support column 205a, so that the filter screen 203a is located inside the valve body 202a. When the lower die 102 and the upper die 103 move away from each other, the support column 205a is ejected from the upper die 103 by the restoring elastic force of the second spring 205c. At this time, the swing rod 206b loses the support of the support column 205a and moves under the action of the restoring elastic force of the third spring 206e. At the same time, the valve core 202b moves under the action of the restoring elastic force of the first spring 202d, causing the limiting push block 206g to approach the expansion tube 204b. Through the inclined surface on one side of the expansion tube 204b, the limiting push block 206g moves away from the card slot V and slides onto the surface of the expansion tube 204b, thereby releasing the limit on the valve core 202b by the limiting push block 206g, and the valve core 202b drives the filter screen 203a to push the die-cast product away from the valve body 202a, solving the problem that in the existing die-casting, air inside the die cavity, residual water vapor of the release agent, etc. will cause poor die-casting filling, or air holes will appear in the die-cast part after processing, which will further lead to non-compliance of the airtightness of the die-cast product and leakage.

[0055] The above embodiments only represent the specific implementation manners of the present invention, and the description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A vacuum pumping structure for the moving and fixed die valve bodies of an integrated super-large mold, characterized in that: It includes a die-casting assembly (100), a first fixing base (101), a lower die (102), an upper die (103), a second fixing base (104), and a fixing member (105). The lower die (102) is disposed on the top of the first fixing base (101), the upper die (103) is located on the top of the lower die (102), the second fixing base (104) is disposed on the top of the upper die (103), and the fixing member (105) is located on one side of the lower die (102); and a vacuum pumping assembly (200), which is disposed in the upper die (103) and includes a feeding member (201), a discharging member (202), a vacuum pumping member (203), an expanding member (204), a supporting member (205), and a driving member (206). The feeding member (201) is disposed in the lower die (102), the discharging member (202) is located in the upper die (103), the vacuum pumping member (203) is disposed in the discharging member (202), the expanding member (204) is disposed on the surface of the discharging member (202), the supporting member (205) is located in the upper die (103), and the driving member (206) is disposed on one side of the supporting member (205); the fixing member (105) includes a fixing foot (105a) and a fixing bolt (105b). The fixing foot (105a) is disposed on one side of the lower die (102), and the fixing bolt (105b) is located in the fixing foot (105a); the discharging member (202) includes a valve body (202a), a valve core (202b), a first limiting ring (202c), a first spring (202d), and a second limiting ring (202e). The valve body (202a) is disposed at the bottom of the upper die (103), the valve core (202b) is located in the valve body (202a), the first limiting ring (202c) is disposed on the surface of the valve core (202b), the end of the first spring (202d) is located on one side of the first limiting ring (202c), the second limiting ring (202e) is disposed at the end of the valve core (202b), and a clamping groove (V) is formed on the surface of the valve core (202b); the vacuum pumping member (203) includes a filter net (203a), a connecting pipe (203b), and a suction pipe (203c). The filter net (203a) is located at the end of the valve core (202b), the connecting pipe (203b) is disposed on one side of the filter net (203a), and the suction pipe (203c) is located in the valve core (202b).

2. The vacuum pumping structure for the moving and fixed mold valve bodies of an integrated super-large mold according to claim 1, characterized in that: The fixing member (105) further includes a fixing disc (105c) and a fixing nut (105d). The fixing disc (105c) is disposed at the end of the fixing bolt (105b), and the fixing nut (105d) is located on the surface of the fixing bolt (105b).

3. The vacuum pumping structure for the moving and fixed die valve bodies of an integrated super-large mold according to claim 2, characterized in that: The material injection part (201) includes a shot tube (201a) and a material guiding tube (201b). The shot tube (201a) is arranged in the lower die (102), and the material guiding tube (201b) is located at the end of the shot tube (201a). A mold cavity (U) is formed at the top of the lower die (102).

4. A vacuum pumping structure for the moving and fixed die valve bodies of an integrated super-large mold, according to claim 3, characterized in that: The material injection part (201) further includes a material injection installation tube (201c), an installation nut (201d), and a fixing tube (201e). The material injection installation tube (201c) is arranged in the material guiding tube (201b), the installation nut (201d) is located on the surface of the material injection installation tube (201c), and the fixing tube (201e) is arranged at the end of the material injection installation tube (201c).

5. A vacuum pumping structure for the moving and fixed mold valve bodies of an integrated super-large mold, as described in claim 1, wherein: The expansion part (204) includes a fixing column (204a) and an expansion tube (204b). The fixing column (204a) is located on the surface of the valve core (202b), and the expansion tube (204b) is arranged on one side of the fixing column (204a).

6. The vacuum pumping structure for the moving and fixed mold valve bodies of an integrated super-large mold according to claim 1, wherein: The support part (205) includes a support column (205a), a third limit ring (205b), and a second spring (205c). The support column (205a) is arranged in the upper die (103), the third limit ring (205b) is located on the surface of the support column (205a), and the end of the second spring (205c) is arranged on one side of the third limit ring (205b).

7. A vacuum pumping structure for the moving and fixed die valve bodies of an integrated super-large mold, as described in claim 1, wherein: The driving part (206) includes a fixing frame (206a), a swing rod (206b), a support frame (206c), a support shaft (206d), a third spring (206e), a limit rod (206f), a limit push block (206g), and a fourth spring (206h). The fixing frame (206a) is arranged on the inner wall of the upper die (103), the swing rod (206b) is located in the fixing frame (206a), the support frame (206c) is arranged on one side of the swing rod (206b), the support shaft (206d) is located in the support frame (206c), the third spring (206e) is arranged on one side of the swing rod (206b), the limit rod (206f) is located on the surface of the support shaft (206d), the limit push block (206g) is arranged on one side of the limit rod (206f), and the end of the fourth spring (206h) is located on one side of the limit rod (206f).

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