Pipe fitting core pulling device

Abstract

The utility model discloses a pipe fitting core pulling device, a pipe fitting mold comprises an upper compound plate, a fixed mold, a movable mold assembly and a lower compound plate which are sequentially arranged from top to bottom, a group of sliding block mold cores are arranged on the movable mold assembly, the sliding block mold cores are fixed on sliding blocks corresponding to the sliding block mold cores, and a valve body product is positioned in the sliding block mold cores. An insert is arranged on the lower surface of one port of the valve body product, an ejector rod assembly is arranged on the lower surface of the insert, the ejector rod assembly is installed in a movable mold assembly, the insert is fixed to the sliding block through a first limiting screw assembly, a second limiting screw assembly enabling the insert to float upwards is arranged in the movable mold assembly, and after injection molding of the mold is completed, the movable mold is opened through external force; the sliding block and the insert float upwards under the action of the second spring until the sliding block and the insert make contact with the second limiting screw and stop moving; in the floating process of the insert, under the action of the first spring, the lower surface of the port of the valve body product is separated from the insert, core pulling is achieved, and movement is stopped until the insert makes contact with the first limiting screw. The sliding block completes core pulling under the action of the inclined guide column, and demolding of a product is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection mold sliding block demolding structure, concretely relates to a pipe fitting core-pulling device. BACKGROUND

[0002] Pipe fitting mold adopts conventional core-pulling such as sliding block, inclined ejector pin etc.

[0003] 1) the same position cannot be core-pulled in different directions, and the product can cause injury; 2) the mold needs to increase the ejector pin plate, the ejector pin complex plate and the mold foot. Some molds can exceed the maximum thickness of the mold, and the mold cannot be placed, increasing the production cost; 3) the mold manufacturing cycle is long. UTILITY MODEL CONTENT

[0004] In view of the problems existing in the prior art, the purpose of the utility model is to provide a pipe fitting core-pulling device for shortening the product forming cycle, which can core-pull in different directions and complete step by step.

[0005] To achieve the above purpose, the technical scheme of the utility model is as follows:

[0006] A pipe fitting core-pulling device, a pipe fitting mold includes upper complex plates, fixed molds, movable mold assemblies and lower complex plates arranged in sequence from top to bottom, a group of sliding block cores are arranged on the movable mold assembly, the sliding block core is fixed on the corresponding sliding block, wherein the valve body product is located in the sliding block core, the lower surface of the one end port of the valve body product is provided with an insert block, the lower surface of the insert block is provided with a top rod assembly, the top rod assembly is installed in the movable mold assembly, the insert block is fixed on the sliding block through a limiting screw one assembly, and the movable mold assembly is provided with a limiting screw two assembly for floating upward.

[0007] Further, the movable mold assembly includes a movable mold and a movable mold base plate located at the bottom of the movable mold, the movable mold base plate is located between the movable mold and the lower complex plate, and the movable mold base plate is fixed on the lower complex plate through a group of mold feet.

[0008] Further, the limiting screw one assembly includes a limiting screw one and a spring one, two limiting screws one are symmetrically arranged on the insert block, a spring one is sleeved on the limiting screw one, and the screw cap of the limiting screw one is located in the insert block, and the screw rod of the limiting screw one extends into the sliding block.

[0009] Further, a mounting hole one is formed at the cooperation position of the insert block and the screw cap of the limiting screw one, and a space one for the upward floating of the limiting screw one is arranged between the mounting hole one and the screw cap of the limiting screw one.

[0010] Further, the ejector rod assembly comprises a pair of ejector rods and a pressing plate, two ejector rods are symmetrically arranged at the center of the lower surface of the insert block, the pressing plate is fixed in the movable die holder plate, the insert block is resisted by the ejector rods, and the ejector rods pass through the movable die and the movable die holder plate and are fixed by the pressing plate.

[0011] Further, the limiting screw two assembly comprises a group of limiting screw two and spring two, limiting screw two is arranged in the four corners of the sliding block base, spring two is arranged on the limiting screw two, and the end of the limiting screw two extends to the movable die holder plate.

[0012] Further, the sliding block base is provided with mounting holes two in cooperation with the screw caps of the limiting screw two, and spaces two for the floating of the limiting screw two are arranged between the mounting holes two and the screw caps of the limiting screw two.

[0013] Further, the fixed die bottom is provided with inclined guide columns.

[0014] Compared with the prior art, the utility model has the beneficial effects as follows:

[0015] 1) After the mold is completed, the movable die is opened by external force, the sliding block and the insert block are floated upwards under the action of the spring two, and stop moving until the limiting screw two is contacted; in the floating process of the insert block, the lower surface of the port of the valve body product is separated from the insert block under the action of the spring one, core pulling is realized, and stop moving until the limiting screw one is contacted; the sliding block is completed under the action of the inclined guide column, and the product is demolded;

[0016] 2) The core pulling device has reasonable structure design, can core pull in different directions, is completed in steps, and shortens the product forming cycle. DRAWINGS

[0017] Figure 1 It is a whole structure schematic view of the pipe fitting mold of the utility model;

[0018] Figure 2 It is a mold section of the utility model Figure 1 ;

[0019] Figure 3 It is Figure 2 A-A1 section view in the utility model;

[0020] Figure 4 It is a mold section of the utility model Figure 2 ;

[0021] Figure 5 It is Figure 4 B-B2 section view in the utility model;

[0022] Figure 6 It is a mold clamping state structure schematic view in the utility model;

[0023] Figure 7 It is the sliding block core-pulling structure schematic view of the utility model;

[0024] Figure 8 It is the structure schematic view of the valve body product port and the insert block, the limiting screw one assembly and the top rod assembly cooperation of the utility model;

[0025] Figure 9 It is the insert block structure schematic view of the utility model;

[0026] Figure 10 It is the moving die structure schematic view of the utility model.

[0027] In the drawing: 1, valve body product;2, upper cover plate;3, fixed die;4, moving die;5, inclined guide pillar;6, moving die base plate;7, die foot;8, lower cover plate;9, sliding block;901, mounting hole two;10, spring one;11, limiting screw one;12, insert block;1201, mounting hole one;13, top rod;14, pressing plate;15, spring two;16, limiting screw two;17, space one;18, space two. DETAILED DESCRIPTION

[0028] The utility model will be further explained in connection with the drawings, but the scope of the utility model is not limited to the range.

[0029] Please refer to Figure 1 A pipe core-pulling device, the pipe mold includes upper cover plate 2, fixed die 3, moving die 4 and lower cover plate 8 arranged in sequence from top to bottom, moving die 4 is provided with moving die base plate 6 between lower cover plate 8, moving die base plate 6 is fixed on lower cover plate 8 by a group of die feet 7, the bottom of fixed die 3 is provided with inclined guide pillar 5, moving die 4 is provided with a group of sliding block cores, the sliding block core is fixed on the corresponding sliding block 9, wherein the valve body product 1 is located inside the sliding block core, as shown in Figure 3 The lower surface of the one port of valve body product 1 is provided with insert block 12.

[0030] Please refer to Figures 2-5 The lower surface of insert block 12 is provided with top rod assembly, and the top rod assembly is installed in moving die assembly, insert block 12 is fixed on sliding block 9 through limiting screw one assembly, and moving die assembly is provided with limiting screw two assembly to make it float upward.

[0031] Limiting screw one assembly includes limiting screw one 11 and spring one 10, two limiting screw ones 11 are symmetrically provided on insert block 12, wherein spring one 10 is sleeved on limiting screw one 11, and the screw cap of limiting screw one 11 is located in insert block 12, and the screw rod of limiting screw one 11 extends into sliding block 9.

[0032] Please refer to Figure 9, the insert 12 and the screw cap of the limiting screw one 11 are provided with a mounting hole one 1201, the mounting hole one 1201 and the screw cap of the limiting screw one 11 are provided with a space one 17 for floating of the limiting screw one 11, and the movable range of the limiting screw one 11 is the space one 17.

[0033] The ejector rod assembly comprises a pair of ejector rods 13 and a pressing plate 14, the insert 12 is provided with two ejector rods 13 symmetrically at the center of the lower surface, the pressing plate 14 is fixed in the movable die seat plate 6, the insert 12 is pressed by the ejector rods 13, the ejector rods 13 pass through the movable die 4 and the movable die seat plate 6 and are fixed by the pressing plate 14

[0034] The limiting screw two assembly comprises a group of limiting screw two 16 and spring two 15, the slide block 9 base is provided with the limiting screw two 16 near the four corners, the limiting screw two 16 is provided with the spring two 15, and the end of the limiting screw two 16 extends to the movable die seat plate 6.

[0035] Please refer to Figure 10 , the slide block 9 base and the screw cap of the limiting screw two 16 are provided with a mounting hole two 901, and the mounting hole two 901 and the screw cap of the limiting screw two 16 are provided with a space two 18 for floating of the limiting screw two 16.

[0036] Please refer to Figures 6-8 , the core pulling process is as follows:

[0037] After the mold is completed, the movable die 4 is opened by external force, the slide block 9 and the insert 12 are floated upwards under the action of the spring two 15 until the slide block 9 and the insert 12 stop moving by contacting the limiting screw two 16; in the floating process of the insert 12, the valve body product 1 port lower surface is separated from the insert 12 under the action of the spring one 10, the core pulling is realized, and the slide block 9 stops moving by contacting the limiting screw one 11; the slide block 9 is completed under the action of the inclined guide column 5, the product is demolded;

[0038] In the process of closing the mold, the slide block 9 contacts the fixed die 3 under the action of the inclined guide column 5, the spring two 15 starts to compress, the insert 12 bottom surface contacts the ejector rod 13, and starts to reset until the reset is completed.

Claims

1. A pipe fitting core-pulling device, wherein the pipe fitting mold includes an upper cover plate (2), a fixed mold (3), a moving mold assembly, and a lower cover plate (8) arranged sequentially from top to bottom, wherein the moving mold assembly is provided with a set of slider cores, the slider cores being fixed on their corresponding sliders (9), wherein the valve body product (1) is located inside the slider cores, characterized in that... The valve body product (1) has an insert (12) on the lower surface of one end. The insert (12) has a push rod assembly on the lower surface. The push rod assembly is installed in the moving mold assembly. The insert (12) is fixed to the slider (9) by a limiting screw assembly. The moving mold assembly has a limiting screw assembly that makes it float upward.

2. The tube core-pulling device according to claim 1, characterized in that... The moving mold assembly includes a moving mold (4) and a moving mold base plate (6) located at the bottom of the moving mold (4). The moving mold base plate (6) is located between the moving mold (4) and the lower cover plate (8). The moving mold base plate (6) is fixed to the lower cover plate (8) by a set of mold feet (7).

3. A pipe core-pulling device according to claim 1, characterized in that... The limiting screw assembly includes a limiting screw (11) and a spring (10). Two limiting screws (11) are symmetrically arranged on the insert (12). The spring (10) is sleeved on the limiting screw (11). The screw cap of the limiting screw (11) is located inside the insert (12), and its screw rod extends into the slider (9).

4. A tube core-pulling device according to claim 3, characterized in that... The insert (12) has a mounting hole (1201) at the joint with the screw cap of the limiting screw (11), and there is a space (17) between the mounting hole (1201) and the screw cap of the limiting screw (11) for the limiting screw (11) to float upward.

5. A pipe core-pulling device according to claim 2, characterized in that... The push rod assembly includes a pair of push rods (13) and a pressure plate (14). Two push rods (13) are symmetrically arranged at the center of the lower surface of the insert (12). The pressure plate (14) is fixed inside the moving mold base plate (6). The insert (12) is held in place by the push rods (13). The push rods (13) pass through the moving mold (4) and the moving mold base plate (6) and are fixed by the pressure plate (14).

6. A tube core-pulling device according to claim 2, characterized in that... The limiting screw assembly includes a set of limiting screws (16) and springs (15). The slider (9) base is provided with limiting screws (16) near the four corners. Springs (15) are fitted on the limiting screws (16). The ends of the limiting screws (16) extend to the moving mold base plate (6).

7. A tube core-pulling device according to claim 6, characterized in that... The base of the slider (9) and the screw cap of the limiting screw (16) are provided with a mounting hole (901), wherein a space (18) for the limiting screw (16) to float is provided between the mounting hole (901) and the screw cap of the limiting screw (16).

8. A tube core-pulling device according to claim 2, characterized in that... The bottom of the fixed mold (3) is provided with inclined guide pillars (5).

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