CN211616474U - Four-slider core-pulling mechanism of injection mold - Google Patents

Abstract

The utility model relates to a four-slide core-pulling mechanism of an injection mold, which comprises a movable mold and a fixed mold. The movable mold includes a movable mold base plate, and a movable mold insert and a pusher plate located above the movable mold base plate. , an insert hole is formed in the middle of the pusher plate, the bottom of the movable die insert is fixed on the movable die seat plate, and the head of the movable die insert passes through the insert hole and is connected with the insert hole. The fixed die also includes a slider and an oblique guide column. Four slider installation grooves are formed around the insert hole, and the slider is provided with four and installed on the slider installation grooves respectively. , the sliding block is matched with the movable mold insert to form a core. The utility model adopts four sliding blocks to pull the core synchronously, and the pusher plate is arranged to be pushed out. When the oil cylinder drives the pusher plate to push out, the slider, the pusher plate and the inclined guide post move relatively, and the movable mold insert can support the product. In this way, the product can be ejected and core-pulled at the same time to ensure the stable production of the mold.

Description

Four-slide core-pulling mechanism for injection mold

technical field

The utility model relates to a four-slide core pulling mechanism of an injection mold, belonging to the technical field of injection molds.

Background technique

The inner barrel of the large-scale drum washing machine has a thin-walled shell product with ribs on its circumference, which makes it difficult to core-pull the product after injection molding. In the prior art, multi-slide core pulling is adopted. However, in the traditional slider structure, the inclined guide column is installed on the fixed mold. When the movable and fixed molds are opened, the sliders are opened synchronously. The situation of fixed mold leads to the failure of product demoulding.

Utility model content

The purpose of the utility model is to overcome the shortcomings of the prior art, and to provide a four-slide core-pulling mechanism for the injection mold of the thin-walled shell of the inner tub of a large-scale drum washing machine.

The technical scheme that the utility model adopts for realizing the purpose is:

The four-slide core-pulling mechanism of the injection mold includes a movable mold and a fixed mold, the movable mold includes a movable mold base plate, a movable mold insert and a pusher plate located above the movable mold base plate, and the pusher plate An insert hole is made in the middle of the movable die insert, the bottom of the movable die insert is fixed on the movable die base plate, and the head of the movable die insert passes through the insert hole and cooperates with the fixed die. It also includes a slider and an oblique guide column. Four slider installation grooves are formed around the insert hole, and the slider is provided with four and installed on the slider installation groove respectively. The movable mold inserts are matched to form a core, the sliding block mounting groove is also provided with a long first oblique guide column hole, and the slider is internally provided with a second oblique guide column hole. The bottom of the column is installed on the movable die base plate, the head of the inclined guide column passes through the first inclined guide column hole and the second inclined guide column hole in sequence, and the movable die further includes an oil cylinder, The oil cylinder is fixed on the movable die base plate, and the oil cylinder drives the pusher plate to move.

As a further optimization of the above technical solution: first guide grooves are also formed on both sides of the slider installation groove, and an L-shaped guide block is installed on the first guide groove, and the L-shaped guide block includes a vertical installation The mounting portion on the first guide groove and the guide portion perpendicular to the mounting portion, a second guide groove is formed between the guide portion and the mounting portion, and two sides of the bottom of the slider are oriented A guide protruding strip protruding outward, the guide protruding strip is located in the second guide groove.

As a further optimization of the above technical solution: the middle part of the slider installation groove is also made with two third guide grooves, the third guide grooves are installed with guide sliders, and the bottom of the slider is made with all the guide grooves. The guide chute matched with the guide slider.

As a further optimization of the above technical solution: four corners of the pusher plate are provided with bosses, and limit screw holes are defined on the four bosses, and the limit screw holes include small holes and A large hole above the small hole, a limit step is formed between the large hole and the small hole, a limit screw is arranged in the limit screw hole, and the bottom of the rod portion of the limit screw passes through the small hole And fixed on the movable die base plate, the cap head of the limit screw is located above the large hole, and the size of the cap head of the limit screw is larger than the size of the small hole and smaller than the size of the large hole. size.

As a further optimization of the above technical solution: the boss is also provided with a guide post hole, the guide post hole is provided with a guide post, the bottom of the guide post is fixed on the movable die base plate, the The head of the guide post passes through the guide post hole and is matched with the fixed die, and the pusher plate is provided with a guide post sleeve matched with the guide post.

As a further optimization of the above technical solution: an I-shaped block is fixed at the end of the piston rod of the oil cylinder, an I-shaped groove is formed in the middle of the I-shaped block, and a connecting block is fixed on one side of the pusher plate, The top end of the connecting block is provided with a protruding matching block, the matching hole is formed on the matching block to match the I-shaped block, and the lower part of the hole wall of the matching hole protrudes inwardly to form a matching step, and the matching step is is located in the I-shaped slot.

Compared with the prior art, the utility model installs the inclined guide column on the movable mold base plate, so as to ensure that the sliding block can press the product when the movable and fixed mold is opened, so that the product does not stick to the fixed mold; The core is equipped with the pusher plate to be ejected. When the oil cylinder drives the pusher plate to push out, the slider, the pusher plate and the inclined guide column move relative to each other. The movable die insert can support the product, so that the product can be pushed out and the core is pulled at the same time. , to ensure the stable production of molds.

Description of drawings

Fig. 1 is a three-dimensional structure schematic diagram of the present invention.

FIG. 2 is a partial enlarged view of A in FIG. 1 .

FIG. 3 is a schematic cross-sectional structure diagram of the present invention.

FIG. 4 is another schematic cross-sectional structure diagram of the present invention.

Detailed ways

The present utility model will be further described below with reference to the accompanying drawings and specific embodiments. As shown in Figure 1-4, for the convenience of display, Figure 1 removes the movable mold insert 2, Figure 3 removes the left slider 4, inclined guide post 5, etc., the four-slide core pulling mechanism of the injection mold , including a movable mold and a fixed mold, the movable mold includes a movable mold base plate 1, a movable mold insert 2 and a pusher plate 3 located above the movable mold base plate 1, and the middle of the pusher plate 3 is made with Insert hole 31, the bottom of the movable die insert 2 is fixed on the movable die seat plate 1, and the head of the movable die insert 2 passes through the insert hole 31 and cooperates with the fixed die , and also includes a slider 4 and an inclined guide column 5, four slider mounting slots 32 are formed around the insert hole 31, and the slider 4 is provided with four slider mounting slots 32 respectively. Above, the slider 4 cooperates with the movable mold insert 2 to form a core, and the slider installation groove 32 is also provided with a long first oblique guide hole 321, and the slider 4 is internally made There is a second oblique guide post hole, the bottom of the oblique guide post 5 is installed on the movable die base plate 1, and the head of the oblique guide post 5 passes through the first oblique guide post hole 321 and all the The second inclined guide post hole, the movable mold further includes an oil cylinder 6, the oil cylinder 6 is fixed on the movable mold base plate 1, and the oil cylinder 6 drives the pusher plate 3 to move. After the injection is completed, the movable and fixed molds are opened, and the inclined guide posts 5 are installed on the movable mold base plate 1 so that the sliders 4 will not be opened synchronously when the movable and fixed molds are opened, and the sliders 4 can press the product to prevent the product from sticking to the fixed mold. After the product is completely separated from the fixed die, the oil cylinder 6 drives the pusher plate 3 and the slider 4 to make an ejection movement, the oblique guide column 5 moves laterally in the first oblique guide column hole 321, and the second oblique guide column hole is close to the The oblique guide column 5 makes the slider 4 move back along the oblique guide column to perform core pulling movement at the same time during the ejection process, so as to realize the core pulling while being ejected. Simultaneous core pulling in each direction. Two first inclined guide post holes 321 are formed on each slider mounting slot 32 , and two second inclined guide post holes 321 are formed inside each slider 4 . The holes 321 are in one-to-one correspondence with each of the second inclined guide post holes, that is, each slider 4 is matched with two sets of inclined guide posts 5, so that the core pulling is more stable.

In the above technical solution: first guide grooves 322 are also formed on both sides of the slider installation groove 32, and an L-shaped guide block 7 is installed on the first guide groove 322, and the L-shaped guide block 7 includes a vertical guide block 7. The installation part 71 installed on the first guide groove 322 and the guide part 72 perpendicular to the installation part 71 form a second guide groove 73 between the guide part 72 and the installation part 71 . Two sides of the bottom of the block 4 are formed with outwardly protruding guide protruding strips 41 , and the guiding protruding strips 41 are located in the second guide grooves 73 . The cooperation of the guide protruding strip 41 and the second guide groove 73 plays a guiding role in the core pulling process of the slider 4 . Two third guide grooves 323 are also formed in the middle of the sliding block installation groove 32 , the guide sliding bars 11 are installed on the third guiding grooves 323 , and the bottom of the sliding block 4 is made with the sliding guide bars. 11. Matching guide chute 42. The cooperation of the guide rails 11 and the guide grooves 42 plays the role of guide.

In the above technical solution, the four corners of the pusher plate 3 are provided with bosses 33 , and the four bosses 33 are all defined with positioning screw holes 331 . As shown in FIG. 3 , the limit screw hole 331 includes a small hole 3311 and a large hole 3312 located above the small hole 3311 , and a limit step 3313 is formed between the large hole 3312 and the small hole 3311 . The limit screw hole 331 is provided with a limit screw 8. The bottom of the rod portion of the limit screw 8 passes through the small hole 3311 and is fixed on the movable die base plate 1. The cap of the limit screw 8 The head is located above the large hole 3312 , and the size of the cap head of the limit screw 8 is larger than the size of the small hole 3311 and smaller than the size of the large hole 3312 . The cooperation of the limit screw 8 and the limit step 3313 can limit the ejection of the pusher plate 3 .

In the above technical solution: the boss 33 is further provided with a guide post hole 332, the guide post hole 332 is provided with a guide post 9, and the bottom of the guide post 9 is fixed on the movable die base plate 1, The head of the guide post 9 passes through the guide post hole 332 and is matched with the fixed die. The pusher plate 3 is provided with a guide post sleeve 10 matched with the guide post 9 . The guide post 9 plays a guiding role for the separation of the movable and the fixed die and the ejection of the pusher plate.

In the above technical solution: an I-shaped block 12 is fixed at the end of the piston rod of the oil cylinder 6. As shown in FIG. 2 , an I-shaped groove 121 is concavely formed in the middle of the A connecting block 13 is fixed on one side, a protruding matching block 131 is formed on the top of the connecting block 13, and a matching hole 1311 is formed on the matching block 131 for matching with the I-shaped block 12. The matching hole 1311 has a hole. The lower part of the wall protrudes inwardly to form a matching step 1312 , and the matching step 1312 is located in the I-shaped groove 121 . The oil cylinder 6 drives the pusher plate 3 to move through the cooperation between the matching step 1311 and the I-shaped groove 121 .

The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make many modifications and changes according to the concept of the present invention without creative efforts. Therefore, any technical solutions that can be obtained by those skilled in the art through logical analysis, reasoning or limited experiments on the basis of the prior art according to the concept of the present invention shall fall within the protection scope of the present invention.

Claims (6)

1. The four-slide core-pulling mechanism of the injection mold includes a movable mold and a fixed mold, and the movable mold includes a movable mold base plate (1) and a movable mold insert (2) located above the movable mold base plate (1). ) and a pusher plate (3), an insert hole (31) is formed in the middle of the pusher plate (3), and the bottom of the movable die insert (2) is fixed on the movable die seat plate (1) On the upper side, the head of the movable mold insert (2) passes through the insert hole (31) and cooperates with the fixed mold, and is characterized in that it also includes a slider (4) and an inclined guide column (5), Four sliding block mounting grooves (32) are formed around the insert hole (31), and four sliding block mounting grooves (32) are provided on the sliding block (4) and are respectively mounted on the sliding block mounting grooves (32). The slider (4) cooperates with the movable mold insert (2) to form a core, and the slider installation groove (32) is also provided with a long first oblique guide column hole (321). The inside of the block (4) is provided with a second oblique guide post hole, the bottom of the oblique guide post (5) is mounted on the movable die base plate (1), and the head of the oblique guide post (5) passes through in sequence. Through the first inclined guide post hole (321) and the second inclined guide post hole, the movable die further comprises an oil cylinder (6), and the oil cylinder (6) is fixed on the movable die base plate (1). On the upper side, the oil cylinder (6) drives the pusher plate (3) to move. 2. The four-slide core-pulling mechanism of an injection mold according to claim 1, characterized in that first guide grooves (322) are further formed on both sides of the slide block installation groove (32), and the first guide grooves (322) An L-shaped guide block (7) is mounted on the groove (322), and the L-shaped guide block (7) includes a mounting part (71) vertically mounted on the first guide groove (322) and a mounting part (71) connected with the mounting part (71). A second guide groove (73) is formed between the guide portion (72) and the mounting portion (71), and two sides of the bottom of the slider (4) are There are guiding protruding strips (41) protruding outwards, and the guiding protruding strips (41) are located in the second guiding grooves (73). 3. The four-slide core-pulling mechanism of an injection mold according to claim 1, characterized in that two third guide grooves (323) are further formed in the middle of the slider mounting groove (32), and the third A guide rail (11) is installed on the guide groove (323), and a guide groove (42) matched with the guide rail (11) is formed at the bottom of the sliding block (4). 4. The four-slide core-pulling mechanism of an injection mold according to claim 1, wherein the four corners of the pusher plate (3) are provided with bosses (33), and the four bosses (33) ) are limited with a limit screw hole (331), the limit screw hole (331) includes a small hole (3311) and a large hole (3312) located above the small hole (3311), the large hole (3312) ) and the small hole (3311), a limit step (3313) is formed, a limit screw (8) is arranged in the limit screw hole (331), and the bottom of the rod of the limit screw (8) passes through through the small hole (3311) and fixed on the movable die base plate (1), the cap head of the limit screw (8) is located above the large hole (3312), the limit screw ( 8) The size of the cap head is larger than the size of the small hole (3311) and smaller than the size of the large hole (3312). 5. The four-slide core-pulling mechanism of an injection mold according to claim 4, characterized in that the boss (33) is further provided with a guide post hole (332), and the guide post hole (332) is provided with an inner There is a guide post (9), the bottom of the guide post (9) is fixed on the movable die base plate (1), and the head of the guide post (9) passes through the guide post hole (332) and In cooperation with the fixed die, the pusher plate (3) is provided with a guide post sleeve (10) matched with the guide post (9). 6. The four-slide core-pulling mechanism of an injection mold according to claim 1, characterized in that an I-shaped block (12) is fixed at the end of the piston rod of the oil cylinder (6), and the I-shaped block (12) An I-shaped groove (121) is formed concavely in the middle of the pusher plate (3), a connecting block (13) is fixed on one side of the pusher plate (3), and a protruding matching block (131) is made on the top of the connecting block (13). The matching block (131) is provided with a matching hole (1311) for matching with the I-shaped block (12). The lower part of the hole wall of the matching hole (1311) protrudes inwardly to form a matching step (1312). The matching step (1312) is located in the I-shaped groove (121).

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