CN216001248U

CN216001248U - Die for long inner hole product

Info

Publication number: CN216001248U
Application number: CN202121877671.8U
Authority: CN
Inventors: 毕爱瑜; 杨永平; 王宝绿; 张敏
Original assignee: DALIAN HAOLIN PRECISION MOLD CO LTD
Current assignee: DALIAN HAOLIN PRECISION MOLD CO LTD
Priority date: 2021-08-12
Filing date: 2021-08-12
Publication date: 2022-03-11
Anticipated expiration: 2031-08-12

Abstract

The utility model discloses a die for a long inner hole product, which comprises a fixed die part and a movable die part, and is characterized in that: the fixed die part comprises a fixed die taking-off plate (1), a runner stripping plate (2) and a fixed die plate (3) are sequentially arranged below the fixed die taking-off plate (1), the movable die part comprises a movable die taking-off plate (4), a top rod bottom plate (5), a top rod plate (6), square iron (7), a movable die bottom plate (8) and a movable die plate (9) are sequentially arranged above the movable die taking-off plate (4), a fixed die insert (10) is arranged in the fixed die plate (3), a movable die (11) matched with the fixed die insert (10) is arranged in the movable die plate (9), and during die assembly, the fixed die insert (10) and the movable die insert (11) can be enclosed to form a die cavity, and a material channel (12) communicated with the die cavity is further arranged in the fixed die part.

Description

Die for long inner hole product

Technical Field

The utility model relates to an injection mold, in particular to a mold for a long inner hole product.

Background

Injection molding is a method for producing and molding industrial products, and is mainly realized by using a molding machine and a matched mold. This process is the primary molding apparatus for injecting thermoplastic or thermoset materials into molds to form plastic articles of various shapes. When utilizing injection mold production to have the product of hole, need set up the slider of a core in the mould, during the compound die, the core of slider tip is inserted in the die cavity, occupies the hole position of target product, and during the die sinking, the core can be taken out along with the slider outside to let the drawing of patterns that the product can be smooth and easy.

In the actual working process, a product with a longer inner hole is sometimes encountered, because the inner hole is longer, the corresponding core is also longer, but the core is in a cantilever state in the cavity before the injection molding operation is really realized, and because the core is longer, sometimes the core is located under a sprue gate, so when a molding machine injects a material in a molten state into the cavity, the material impacts on the core in the cantilever state, the core is possibly deformed and bent, the quality of a product is influenced on one hand, and on the other hand, the subsequent side core pulling action is even possibly not completed;

in addition, when the side core pulling action is realized, the sequential action among a plurality of templates is controlled by utilizing the cooperative work of a plurality of mold locking devices installed among different templates, the number of the mold locking devices is relatively large, the cost is relatively high, and the workload is large during maintenance.

There is therefore a need for a method or apparatus that addresses the above-mentioned problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art, and provides the mold which is simple in structure, ingenious in design, capable of ensuring that a longer mold core cannot deform under the action of material impact, and capable of realizing sequential action control of a plurality of templates by only one mold locker.

The technical solution of the utility model is as follows: a mold for a long bore product, the mold comprising a stationary mold part and a movable mold part, wherein: the fixed die part comprises a fixed die taking-off plate 1, a runner stripper plate 2 and a fixed die plate 3 are sequentially arranged below the fixed die taking-off plate 1, the movable die part comprises a movable die taking-off plate 4, a mandril base plate 5, a mandril plate 6, square iron 7, a movable die base plate 8 and a movable die plate 9 are sequentially arranged above the movable die taking-off plate 4, a fixed die insert 10 is arranged in the fixed die plate 3, a movable die insert 11 matched with the fixed die insert 10 is arranged in the movable die plate 9, the fixed die insert 10 and the movable die insert 11 can surround to form a die cavity during die assembly, and a material channel 12 communicated with the die cavity is further arranged in the fixed die part,

a slide block 13 is arranged in the movable mould plate 9, an inclined through hole is formed in the slide block 13, driving guide pillars 14 distributed obliquely are connected to the bottom surface of the fixed mould plate 3, the driving guide pillars 14 are connected in the inclined through hole in a sliding mode, a spring 15 and a slide block core 16 are arranged at one end, facing a mould cavity, of the slide block 13, when mould closing is carried out, the slide block core 16 is located in the mould cavity, a first mould pulling core 17 is arranged on the movable mould bottom plate 8, a circular truncated cone-shaped counter bore 18 is formed in the bottom end surface of the slide block core 16, a supporting piece 19 is arranged at the top end of the first mould pulling core 17, the top end of the supporting piece 19 is in a circular truncated cone shape matched with the counter bore 18, and in a mould closing state, the top end of the supporting piece 19 is inserted into the counter bore 18,

the mold locking device comprises a fixed mold plate 3, a movable mold plate 9 and a movable mold bottom plate 8, wherein a mold locking device 19 is arranged on the outer sides of the fixed mold plate 3, the movable mold plate 9 and the movable mold bottom plate 8, the mold locking device 19 comprises a mold locking plate 20 fixedly connected with the movable mold plate 9, a first mold locking rod 21 and a second mold locking rod 22 which are parallel to each other are connected in the mold locking plate 20 in a sliding mode, the bottom end of the first mold locking rod 21 is fixedly connected with the movable mold bottom plate 8, the top end of the second mold locking rod 22 is fixedly connected with the fixed mold plate 3, an arc-shaped notch 23 is arranged at the top end of the first mold locking rod 21, a sliding chute 27 which is horizontally distributed is arranged in the mold locking plate 20, a locking cylinder 24 which is matched with the arc-shaped notch 23 is connected in the sliding chute 27, an accommodating groove 25 with one end communicated with the sliding chute 27 is also arranged on the mold locking plate 20, a spring 26 is arranged in the accommodating groove 25, one end of the spring 26 is contacted with the outer side wall of the locking cylinder 24, and a groove 28 which is matched with the locking cylinder 24 is also arranged at the bottom of the second mold locking rod 22,

the distance between the first and second

mold clamping bars

21 and 22 is smaller than the diameter of the locking cylinder 24.

Compared with the prior art, the utility model has the following advantages:

the mold with the structural form aiming at the long inner hole product is simple in structure, ingenious in design and reasonable in layout, aims at various problems existing in the working process of the conventional mold with a long side core pulling part, and is designed into a special structure; meanwhile, the mold locker with a special structure is designed, the mold locker can act on three templates simultaneously, namely, one mold locker is used for realizing sequential mold opening action among the three templates (in the traditional structure, one mold locker can only control two template actions, and two mold lockers are required to be arranged for realizing sequential control of the three templates), so that the cost is saved, and the integral structure of the device is simplified. And the manufacturing process of the die is simple, the manufacturing cost is low, so that the die has multiple advantages, is particularly suitable for popularization and application in the field, and has a very wide market prospect.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is an enlarged view of a portion a in fig. 1.

FIG. 3 is a schematic view showing the structure of a mold locker portion in an embodiment of the present invention.

FIG. 4 is a schematic view showing the structure of each component of the mold locker in the embodiment of the present invention.

Detailed Description

The following description will explain embodiments of the present invention with reference to the accompanying drawings. As shown in fig. 1, 2, 3, and 4: a die for long inner hole products comprises a fixed die part and a movable die part, wherein the fixed die part comprises a fixed die taking plate 1, a runner stripper plate 2 and a fixed die plate 3 are sequentially arranged below the fixed die taking plate 1, the movable die part comprises a movable die taking plate 4, a mandril base plate 5, a mandril plate 6, square iron 7, a movable die base plate 8 and a movable die plate 9 are sequentially arranged above the movable die taking plate 4, a fixed die insert 10 is arranged in the fixed die plate 3, a movable die insert 11 matched with the fixed die insert 10 is arranged in the movable die plate 9, the fixed die insert 10 and the movable die insert 11 can surround to form a die cavity during die assembly, and a material channel 12 communicated with the die cavity is also arranged in the fixed die part,

the mold locking device comprises a fixed mold plate 3, a movable mold plate 9 and a movable mold bottom plate 8, wherein a mold locking device 19 is arranged on the outer sides of the fixed mold plate 3, the movable mold plate 9 and the movable mold bottom plate 8, the mold locking device 19 comprises a mold locking plate 20 fixedly connected with the movable mold plate 9, a first mold locking rod 21 and a second mold locking rod 22 which are parallel to each other are connected in the mold locking plate 20 in a sliding mode, the bottom end of the first mold locking rod 21 is fixedly connected with the movable mold bottom plate 8, the top end of the second mold locking rod 22 is fixedly connected with the fixed mold plate 3, an arc-shaped notch 23 is arranged at the top end of the first mold locking rod 21, a sliding chute 27 which is horizontally distributed is arranged in the mold locking plate 20, a locking cylinder 24 which is matched with the arc-shaped notch 23 is connected in the sliding chute 27, an accommodating groove 25 with one end communicated with the sliding chute 27 is also arranged on the mold locking plate 20, a spring 26 is arranged in the accommodating groove 25, one end of the spring 26 is contacted with the outer side wall of the locking cylinder 24, and a groove 28 which is matched with the locking cylinder 24 is also arranged at the bottom of the second mold locking rod 22, the distance between the first and second

mold clamping bars

21 and 22 is smaller than the diameter of the locking cylinder 24.

The working process of the die for the long inner hole product provided by the embodiment of the utility model is as follows: under the action of a forming machine, the movable mould part and the fixed mould part are matched, the forming machine can fill materials in a molten state into the cavity through the material channel 12, the materials form a product after being cooled, the movable mould part and the fixed mould part are separated, in the process of opening the mould,

the slide core 16 is drawn out from the inner hole of the workpiece along with the horizontal movement of the slide to realize the side core-pulling action, and then the ejector rods arranged on the ejector rod bottom plate 5 and the ejector rod plate 6 can eject the formed workpiece out of the cavity to realize the demoulding action;

when the mold is closed, the supporting piece 19 at the top end of the core-pulling-out core 17 is embedded into the counter bore 18 formed on the bottom end face of the slide block core 16, on one hand, the core-pulling-out core 17 is supported, so that the slide block core 16 is in a non-cantilever state in the injection molding process, and the slide block core 16 can be prevented from deforming under the impact of materials; meanwhile, because the supporting piece 19 is not pressed against the surface of the slider core 16, but is arranged to be inserted into the counter bore 18 of the slider core 16 at the end thereof, the structure can effectively prevent burrs from being formed at the junction of the slider core 16 and the supporting piece 19;

when the mold is opened, firstly, the core 17 needs to be pulled out, the end part of the supporting piece 19 is pulled out from the counter bore 18, then the slider 13 can drive the slider core 16 to move horizontally, and in order to realize smooth side core pulling, the mold opening sequence of the three templates is controlled by the mold locker 19 connected among the fixed template 3, the movable template 9 and the movable mold bottom plate 8, so that the smooth operation is ensured;

during mold opening, although the fixed mold plate 3 and the movable mold plate 9 tend to be separated, since a part of the outer edge of the locking cylinder 24 is clamped in the groove 28, namely, the fixed mold plate 3 and the movable mold plate 9 are relatively fixed in this state, the mold opening action cannot be realized, therefore, the movable mold plate 9 and the movable mold plate 8 are opened between the three mold plates of the fixed mold plate 3, the movable mold plate 9 and the movable mold plate 8,

as the movable die plate 9 and the movable die base plate 8 are far away from each other, the first die locking rod 21 connected to the movable die base plate 8 moves downwards relative to the die locking plate 20, when the arc-shaped notch 23 on the first die locking rod 21 moves to a position matched with the locking cylinder 24, the locking cylinder 24 moves towards the arc-shaped notch 23 under the action of the spring 26 and is separated from the opening of the groove 28, and at the moment, the fixed die plate 3 and the movable die plate 9 are unlocked and far away from each other; that is, the movable die plate 9 and the movable die bottom plate 8 can be controlled to be opened first, and the fixed die plate 3 and the movable die plate 9 are opened later when the die is opened;

when the mold is closed, the above-mentioned actions are reversed. The lower end of the second mold locking rod 22 is inserted into the mold locking plate 20, when the fixed mold plate 3 and the movable mold plate 9 are closed, the arc notch 23 at the front end of the first mold locking rod 21 pushes the locking cylinder 24 into the groove 28 on the second mold locking rod 22, at this time, the first mold locking rod 21 is not blocked by the locking cylinder 20, and is inserted through the mold locking plate 20, and the movable mold base plate 8 and the movable mold plate 9 start to be closed. Finally, the fixed die plate 3 and the movable die plate 9 are locked again, and die assembly is completed.

That is, the mold clamping device 19 of this type can control the mold opening/closing sequence among the fixed platen 3, the movable platen 9, and the movable mold base plate 8.

Claims

1. A mold for a long bore product, the mold comprising a stationary mold part and a movable mold part, wherein: the fixed die part comprises a fixed die taking-off plate (1), a runner stripper plate (2) and a fixed die plate (3) are sequentially arranged below the fixed die taking-off plate (1), the movable die part comprises a movable die taking-off plate (4), a mandril base plate (5), a mandril plate (6), square iron (7), a movable die base plate (8) and a movable die plate (9) are sequentially arranged above the movable die taking-off plate (4), a fixed die insert (10) is arranged in the fixed die plate (3), a movable die insert (11) matched with the fixed die insert (10) is arranged in the movable die plate (9), the fixed die insert (10) and the movable die insert (11) can surround to form a die cavity during die assembly, and a material channel (12) communicated with the die cavity is further arranged in the fixed die part,

a sliding block (13) is arranged in the movable mould plate (9), an inclined through hole is formed in the sliding block (13), driving guide pillars (14) which are distributed in an inclined mode are connected to the bottom surface of the fixed mould plate (3), the driving guide pillars (14) are connected in the inclined through hole in a sliding mode, a spring (15) and a sliding block core (16) are arranged at one end, facing the cavity, of the sliding block (13), when the mould is closed, the sliding block core (16) is located in the cavity, a core (17) is pulled out firstly on the movable mould bottom plate (8), a circular truncated cone-shaped counter bore (18) is formed in the bottom end surface of the sliding block core (16), a supporting piece (19) is arranged at the top end of the core (17) pulled out firstly, the top end of the supporting piece (19) is in a circular truncated cone shape matched with the counter bore (18), and in the mould closing state, the top end of the supporting piece (19) is inserted into the counter bore (18),

the mould locking device comprises a fixed mould plate (3), a movable mould plate (9) and a movable mould bottom plate (8), wherein a mould locker (19) is arranged on the outer sides of the fixed mould plate (3), the movable mould plate (9) and the movable mould bottom plate (8), the mould locker (19) comprises a mould locking plate (20) fixedly connected with the movable mould plate (9), a first mould locking rod (21) and a second mould locking rod (22) which are parallel to each other are connected in the mould locking plate (20) in a sliding mode, the bottom end of the first mould locking rod (21) is fixedly connected with the movable mould bottom plate (8), the top end of the second mould locking rod (22) is fixedly connected with the fixed mould plate (3), an arc-shaped notch (23) is arranged at the top end of the first mould locking rod (21), a sliding groove (27) which is horizontally distributed is arranged in the mould locking plate (20), a locking cylinder (24) which is matched with the arc-shaped notch (23) is connected in the sliding mode (27), and an accommodating groove (25) of which one end is communicated with the sliding groove (27) is also arranged on the mould locking plate (20), a spring (26) is arranged in the accommodating groove (25), one end of the spring (26) is contacted with the outer side wall of the locking cylinder (24), meanwhile, the bottom of the second mold locking rod (22) is also provided with a groove (28) matched with the locking cylinder (24),

the distance between the first mold locking rod (21) and the second mold locking rod (22) is smaller than the diameter of the locking cylinder (24).