CN204322414U - A kind of tubing mould - Google Patents

Abstract

The utility model discloses a pipe mold, which is sequentially provided with a flow channel plate, an upper formwork, a mold core assembly, a lower formwork and a lower backing plate from top to bottom, the mold core assembly includes a crossbeam, and the center of the crossbeam is provided with a rotating shaft The two sides of the rotating shaft are symmetrically provided with a large mold core fixed on the beam. The outside of the large mold core is provided with a small mold core that is movably connected to the beam and rotatable. The small mold core is movably inserted into the large mold core. on the side wall. The beneficial effects of the utility model: the small mold core is movably inserted on the side wall of the large mold core, on the one hand offsetting part of the force generated when feeding from one side, and on the other hand giving a A certain support can shorten the demoulding time, improve production efficiency and reduce the physical exertion of workers.

Description

a tube mold

technical field

The utility model relates to the technical field of pipe injection molding, in particular to a pipe mold.

Background technique

Pipe molds are used in the injection molding of pipes. Since pipe products generally have expansion and cushioning ripples in the middle, the mold core will also be equipped with expansion and cushioning ripples, which will lead to demoulding when the product is released. It is very difficult and often consumes a lot of physical strength of the workers. The whole demoulding process takes a long time and the production efficiency is low.

Utility model content

The purpose of the utility model is to provide a pipe mold, which can reduce the physical exertion of the workers, shorten the demoulding time and improve the production efficiency.

In order to achieve this purpose, the utility model adopts the following technical solutions: a pipe mold, which is provided with a flow channel plate, an upper template, a mold core assembly, a lower mold plate and a lower backing plate in sequence from top to bottom, and the mold core assembly includes Beam, the center of the beam is provided with a rotating shaft, and the two sides of the rotating shaft are symmetrically provided with a large mold core fixed on the beam, and a small mold core that is movably connected to the beam and rotatable is provided on the outside of the large mold core. It is movably inserted on the side wall of the large mold core.

Preferably, an interface is provided on the side wall of the large mold core, and the ends of the small mold core are movably plugged into the interface.

Preferably, it also includes a small mold core guide pin, which runs through the upper template and the lower template, and the upper end of the small mold core guide pin is in the shape of a truncated cone.

Preferably, the upper mold plate is attached to the lower mold plate to form a mold cavity and a flow channel, the cavity accommodates a large mold core and a small mold core, and the flow channel is Y-shaped and communicated with the mold cavity.

Preferably, the flow channel extends to the corrugation of the large mold core.

Preferably, the runner plate is provided with a main gate, and the main gate communicates with the runner.

Preferably, the lower formwork is provided with a belt groove, and the belt groove is connected to the flow channel.

Preferably, the runner plate, the upper formwork, the mold core assembly, the lower formwork and the lower backing plate are fixed together through long guide posts.

Preferably, cylindrical roller bearings are provided at both ends of the rotating shaft, and the cylindrical roller bearings are arranged in the fixed block of the lifting film frame.

The beneficial effects of the utility model:

1. The small mold core is movably inserted on the side wall of the large mold core. On the one hand, it offsets part of the force generated when feeding from one side. On the other hand, the small mold core provides certain support when demoulding, which can The demoulding time is shortened, the production efficiency is improved, and the physical exertion of workers is reduced.

2. The flow channel is set in a Y shape, which slows down the flow rate of the rubber material and prevents the rubber material from directly hitting the mold core, causing force on one side, resulting in uneven thickness of the product; and the flow channel extends to the corrugated part of the large mold core, which can Further slow down the flow rate of the rubber to prevent the mold core from being under pressure instantaneously.

3. The lower formwork is equipped with a belt trough, which on the one hand slows down the flow rate of the rubber material; on the other hand, it also keeps the waste on the lower formwork, which is convenient for waste disposal.

Description of drawings

Fig. 1 is the front view of the utility model;

Fig. 2 is the top view of the utility model;

Fig. 3 is the structural representation of the mold core assembly of the present utility model;

Fig. 4 is a schematic structural view of the guide pin of the small mold core of the present invention;

Fig. 5 is a structural schematic diagram of the lower formwork of the utility model.

In the picture:

1-runner plate; 2-upper template; 3-core assembly; 4-lower template; 5-lower plate; 6-small mold core guide pin; 7-runner; 8-long guide post; In the fixed block of the film frame; 11-main gate; 31-beam; 32-rotation shaft; 33-large mold core; 34-small mold core; 41-belt trough; 331-interface; 341-end;

Detailed ways

The technical scheme of the utility model will be further described below in conjunction with the accompanying drawings and through specific embodiments.

As shown in Figures 1 and 2, the utility model provides a pipe mold. The structure is an injection pressure structure, which is used for injection pressure manufacturing of pipes. It is provided with a flow channel plate 1 and an upper mold plate 2 from top to bottom. , mold core assembly 3, lower template 4 and lower backing plate 5, wherein mold core assembly 3 as shown in Figure 3, comprises crossbeam 31, and the center of crossbeam 31 is provided with rotating shaft 32, and rotating shaft 32 both sides are symmetrically provided with affixed On the large mold core 33 on the crossbeam 31, the outside of the large mold core 33 is provided with a small mold core 34 that is movably connected to the crossbeam 31 and is rotatable. Both the large mold core 33 and the small mold core 34 can rotate around the rotating shaft 32, wherein The small mold core 34 is movably inserted on the side wall of the large mold core 33, and the side wall of the large mold core 33 is provided with an interface 331, and the end 341 of the small mold core 34 is movably inserted on the interface 331. , the end 341 of the small mold core 34 is inserted on the interface 331 of the large mold core 33, and during demoulding, the end 341 of the small mold core 34 is pulled out.

Generally, the rubber product can only be produced after vulcanization and molding, and the vulcanization press is idle when the product is produced. The vulcanization production time of the rubber product does not overlap with the product production time. Since the middle part of the pipe product generally has the characteristics of expansion and cushioning ripples, in the design There will also be stretching and cushioning ripples in the mold core, so its vulcanization time and auxiliary demoulding time are relatively long, resulting in extremely low production efficiency, and by adopting a structure with large and small mold cores symmetrically arranged around the rotation axis 32, The demoulding of the product can be carried out at the same time as the vulcanization production, which saves the waiting time of the vulcanization press when the product is demoulding, doubles the production efficiency, and the benefits are very considerable.

A small core guide pin 6 is also connected to the upper template 2 and the lower template 4, which runs through the upper template 2 and the lower template 4 to facilitate the insertion of the small core 34. The upper end of the small core guide pin 34 is an oblique cone The truncated shape, as shown in Figure 4, the reason for adopting the truncated cone shape is that when the end 341 of the small mold core 34 is pulled out from the interface 331, it can be lifted by the structure of the truncated cone, and then the small mold can also be lifted. The end 341 of the core 34 returns quickly and accurately, and is plugged into the interface 331 without jamming or compression molding.

After the upper mold plate 2 and the lower mold plate 4 are bonded together, a mold cavity and a runner 7 are formed, wherein the mold cavity accommodates a large mold core 33 and a small mold core 34, thereby realizing injection molding of the entire product. In this embodiment, the runner 7 It is Y-shaped and connected to the mold cavity. The reason why it is set in Y-shape is because it can slow down the flow rate of the rubber material, avoiding the rubber material from directly hitting the mold core, causing force on one side, and eventually resulting in uneven thickness of the product. phenomenon; at the same time, the bifurcation of the flow channel 7 extends to the corrugation of the large mold core 33, which helps to further slow down the flow rate of the rubber material during injection pressure, and prevents the mold core from being damaged due to instantaneous pressure.

A main gate 11 is provided on the runner plate 1 for communicating with the runner 7 to realize the entire injection molding process.

As shown in Figure 5, the lower template 4 is provided with a material groove 41, which is located at the starting end of the runner 7, corresponding to the position of the main gate 11 of the runner plate 1, and the belt groove 41 is also connected to the runner 7. Its shape can be designed to be circular and have reverse push-pull, on the one hand, to slow down the flow rate of the rubber; on the other hand, it can leave the waste on the lower template 4, which is convenient for waste disposal.

In this embodiment, the runner plate 1, the upper mold plate 2, the mold core assembly 3, the lower mold plate 4 and the lower backing plate 5 are fixed together through the long guide pillar 8, so as to realize the stability of the entire mold structure;

The two ends of the rotating shaft 32 are provided with cylindrical roller bearings, and the cylindrical roller bearings are arranged in the fixed block 9 of the lifting film frame to facilitate the rotation of the rotating shaft 32 .

In this embodiment, positioning stoppers can also be provided at both ends of the beam 31 for the rotation of two sets of mold cores during injection molding, so as to realize that one set is vulcanized and the other set is demolded.

The technical principles of the present utility model have been described above in conjunction with specific embodiments. These descriptions are only for explaining the principle of the utility model, and cannot be construed as limiting the protection scope of the utility model in any way. Based on the explanations herein, those skilled in the art can think of other specific implementations of the present utility model without creative work, and these forms will all fall within the protection scope of the present utility model.

Claims (9)

1. A tube type mold is provided with a flow channel plate (1), an upper template (2), a mold core assembly (3), a lower template (4) and a lower backing plate (5) from top to bottom successively, and its characteristics That is, the mold core assembly (3) includes a beam (31), the center of the beam (31) is provided with a rotating shaft (32), and the two sides of the rotating shaft (32) are symmetrically provided with large molds fixed on the beam (31). Core (33), the outside of big mold core (33) is provided with the small mold core (34) that is movably connected to crossbeam (31) and rotatable, and described small mold core (34) is movably inserted in big mold core (33) ) on the side wall. 2. The tubular mold according to claim 1, characterized in that, the side wall of the large mold core (33) is provided with an interface (331), and the end (341) of the small mold core (34) is movably plugged in on the interface (331). 3. The tubular mold according to claim 1, characterized in that it also includes a small mold core guide pin (6), which runs through the upper template (2) and the lower template (4), and the small mold core guide pin (6) The upper end is in the shape of a truncated cone. 4. The pipe mold according to claim 1, characterized in that, the upper template (2) and the lower template (4) fit together to form a mold cavity and a runner (7), and the mold cavity accommodates large The mold core (33), the small mold core (34), and the runner (7) are Y-shaped and communicated with the mold cavity. 5. The tubular mold according to claim 4, characterized in that, the runner (7) extends to the corrugation of the large mold core (33). 6. The tubular mold according to claim 4, characterized in that, the runner plate (1) is provided with a main gate (11), and the main gate (11) is connected to the runner (7) . 7. The pipe mold according to claim 4, characterized in that, the lower formwork (4) is provided with a belt groove (41), and the belt groove (41) is connected to the runner (7). 8. The tubular mold according to claim 1, characterized in that, the runner plate (1), the upper template (2), the mold core assembly (3), the lower template (4) and the lower backing plate (5 ) are affixed together by a long guide post (8). 9. The tube mold according to claim 1, characterized in that cylindrical roller bearings are provided at both ends of the rotating shaft (32), and the cylindrical roller bearings are arranged in the fixed block (9) of the lifting film frame .