CN105965788A - A Microporous Unidirectional Injection Shoe Mold - Google Patents

Abstract

The invention provides a microporous one-way injection shoe mold, which comprises an upper mold, a lower mold and a mold core arranged on the upper mold or the lower mold, wherein a cavity for forming shoes is arranged between the upper mold and the lower mold; the upper die or the lower die is provided with a micropore feeding one-way valve, the upper die or the lower die is provided with a used material absorption device, and the upper die or the lower die is provided with a sprue part for injecting a melt into the cavity; the gate part is provided with a micro gate, a discharge hole of the micropore feeding one-way valve is communicated with the old material absorption device, the old material absorption device is communicated with the gate part, and the gate part is communicated with the cavity. The microporous one-way injection shoe mold is convenient to clean and high in production efficiency, reduces product defects, improves the yield and the qualification rate of products, and reduces production cost.

Description

A Microporous Unidirectional Injection Shoe Mold

technical field

The invention relates to the technical field of injection molds, in particular to a microporous unidirectional injection shoe mold.

Background technique

With the continuous development of the economy and the continuous progress of society, it provides a wealth of material consumer goods, creating good conditions for improving people's living standards and pursuing personalized life, thereby accelerating the demand for material consumer goods, and plastic products are many One of the material consumer goods. For example: shoes, etc., in daily life, rain boots, sports shoes and rubber slippers are common, and shoe-making molds are used to make the above-mentioned shoes, so the shoe-making molds for making the above-mentioned shoes are essential.

Existing injection shoe molds generally include an upper mold and a lower mold. The inner surfaces of the upper mold and the lower mold are respectively provided with corresponding cavities, and a mold corresponding to the shape of the shoe sole is formed between the upper mold and the lower mold. Dissolving chamber, the upper mold is provided with a discharge hole leading from the outer surface of the upper mold to the dissolving chamber, and the material flows into the dissolving chamber from the discharging hole of the upper mold to make the required finished product.

In the above-mentioned production process, there are the following deficiencies: 1. High temperature and high pressure melting material has a greater impact on the cavity, which makes the upper mold and the lower mold easily misaligned, resulting in material leakage and waste of materials. At the same time, the end face of the nozzle of the gun is not in absolute contact with the upper and lower dies, and there is often a situation where the seal is not tight and overflows, resulting in defective products. 2. The injection method is usually closed by pulling and inserting a rod. Because the sealing position cannot be at the edge, the amount of returned material will directly affect the yield; 3. After the product is formed, clean the injection gun before the next forming The remnants of the feed port and the product feed port need to be cleaned manually with a hard scraper or crochet. Over time, due to human contact and wear, the gun feed port and the product feed port become larger and larger, and material leakage occurs at the feed port. Serious, material waste and defective products increase.

Therefore, adopting the above-mentioned existing injection shoe molds for production is not only inconvenient for cleaning and low in production efficiency, but also overflow edges will be left on the product, the defective rate of the product is high, and the production cost is increased.

Contents of the invention

The present invention aims at the deficiencies in the prior art, and its main purpose is to provide a microporous unidirectional injection shoe mold, which solves the problems of inconvenient cleaning, low production efficiency and unqualified products during the production of the existing injection shoe molds. The high rate increases the production cost.

In order to achieve the above object, the present invention adopts the following technical solutions:

A microporous unidirectional injection shoe mold, including an upper mold, a lower mold, and a mold core installed on the upper mold or the lower mold, and a cavity for molding shoes is provided between the upper mold and the lower mold; the upper mold or A microporous feed check valve is installed on the lower mold, the upper mold or the lower mold is provided with an old material absorption device, and the upper mold or the lower mold is installed with a gate for injecting molten material into the cavity part; the gate part has a miniature gate, and the discharge port of the microporous feed check valve is connected to the old material absorption device, and the old material absorption device is connected to the gate part, and the gate A component communicates with the cavity.

Preferably, the microporous feed one-way valve includes a valve body, the valve body is provided with a feed port and a discharge port, and a liquid channel connecting the feed port and the discharge port, and the liquid channel is located at the In the valve body; a first blocking member is installed on the feed port of the valve body, and a second blocking member is protruded from the inner wall of the liquid passage toward the center of the liquid passage, and the liquid passage corresponds to the first The position between the first blocking part and the second blocking part is provided with a ball for closing or opening the liquid channel; the outer wall of the valve body is provided with a boss for positioning, and the boss is provided with a useful It is used to fix the valve body on the mounting hole on the upper mold or the lower mold; an overflow groove is arranged on the side of the valve body away from the boss, and the bottom of the overflow groove corresponds to the The discharge port of the valve body is provided with an arc-shaped notch, and the arc-shaped recess leads to the discharge port of the valve body.

Preferably, the feed port of the valve body is provided with a pit for installing the first blocking part; the second blocking part is a plurality of convex lines, and several of the convex lines are fed along the valve body The direction is set; the first blocking part is a stopper, and the stopper is provided with a concave cavity with open ends at both ends. The end of the concave cavity close to the second blocking part is the inner end, and the other end is At the outer end, the diameter of the outer end opening of the concave cavity is smaller than the diameter of the inner end opening, and the diameter of the outer end opening is smaller than the diameter of the ball.

Preferably, the arc-shaped notch forms an angle greater than zero and less than 90 degrees with the discharge port of the valve body; the overflow groove is in the shape of a door, and the overflow groove includes a first groove wall, an arc-shaped The connecting part and the second groove wall, one end of the first groove wall and one end of the second groove wall are respectively connected with the two ends of the arc-shaped connecting part; the valve body corresponds to the first groove wall and the second groove wall. The position of the second groove wall is provided with a first positioning block and a second positioning block integrally formed with the valve body, and the first positioning block and the second positioning block are respectively located on both sides of the discharge port of the valve body.

Preferably, the first positioning block and the second positioning block are provided with protruding feet that cooperate with the boss to achieve positioning, and the protruding feet and the boss are located on the same side of the valve body; A portion of the valve body between the first positioning block and the second positioning block has an inclination toward the bottom of the overflow tank.

Preferably, the old material absorption device includes a main runner and a sub-runner opened on the upper mold or the lower mold, one end of the sub-runner is connected to the main runner, and the other end of the sub-runner is One end is connected to the sprue part, there are at least two sub-runners, the sub-runners are located on both sides of the main runner, and the connection between the main runner and the sub-runner is provided with Filtration mechanism; the discharge end of the main sprue is connected with an old material storage area for storing old material, and the old material storage area is connected with a vacuum mechanism for pumping the sprue.

Preferably, the main runner is butterfly-shaped as a whole, and the sub-runner is symmetrical with respect to the axis of the sub-runner; the filtering mechanism includes a filter tank, and the discharge end of the main runner faces the old material The storage area gradually shrinks.

Preferably, the vacuum pumping mechanism includes a vacuum pump, a vacuum air channel and an exhaust port, one end of the vacuum air channel leads to the old material storage area, and the other end of the vacuum air channel communicates with the exhaust port , the exhaust port is connected with the air inlet of the vacuum pump.

Preferably, the old material absorbing device also includes a waste material removal component installed on the upper mold or the lower mold, and the waste material removal component includes a dragging block and a power assembly for pushing the dragging block to move, so The power assembly is connected to the dragging block, the dragging block is provided with a dragging groove, the dragging groove is located on the runner, and the dragging groove overlaps with the corresponding part of the runner together.

Preferably, the gate part includes a gate column, the gate column is installed on the upper mold or the lower mold, and the gate column is provided with a micro-hole arc gate, and the micro-hole arc The gate is banana shaped.

Adopt above-mentioned technical scheme, the present invention has the following advantages:

The microporous one-way injection shoe mold of the present invention is equipped with a microporous feeding one-way valve on the upper mold or the lower mold, and the outlet of the microporous feeding one-way valve is connected with the old material absorption device, so that the last The residues of injection molding are directly introduced into the old material storage area and stored in the old material storage area to avoid affecting the injection molding products and ensure the qualified rate of injection molding products. At the same time, it facilitates the collection of residual materials, avoids the cumbersome cleaning of the upper mold or the lower mold after injection molding, and can reduce costs.

A gate part for injecting molten material into the mold cavity is installed on the upper mold or the lower mold; the old material absorbing device communicates with the gate part, the gate part communicates with the mold cavity, and the gate part has a miniature gate. Through the above improvements, the section close to the finished product is smaller, and when the upper and lower molds are opened, the tailings are automatically and easily separated from the finished product, and there is no need to manually trim the inlet; and the scars are extremely small, which improves the quality of the finished product. Reduce material waste and rise in defective products.

To sum up, the microporous unidirectional injection shoe mold of the present invention is easy to clean, has high production efficiency, reduces product defects, improves product yield and qualified rate, and reduces production costs.

Description of drawings

Fig. 1 is a front structural schematic diagram of a microporous feed check valve in the present invention.

Fig. 2 is a rear view structural schematic diagram of the microporous feed check valve in the present invention.

Fig. 3 is a top structural schematic diagram of the microporous feed check valve of the present invention.

Fig. 4 is a side view schematic diagram of the microporous feed check valve in the present invention.

Fig. 5 is a perspective structure diagram of the microporous feed check valve of the present invention.

Fig. 6 is a cross-sectional view of the first blocking member in the present invention.

Fig. 7 is a structural schematic diagram of the present invention omitting upper mold, lower mold and gate components.

Fig. 8 is a schematic structural view of the old material absorbing device in the present invention omitting the gate part and the waste material removal part.

Fig. 9 is a side view schematic diagram of the old material absorbing device in the present invention.

Fig. 10 is a schematic diagram of the structure of the waste removal component in the present invention.

Fig. 11 is a schematic structural diagram of the present invention.

Fig. 12 is a sectional view of the lower mold of the present invention.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figures 11 and 12, a microporous unidirectional injection shoe mold includes an upper mold 111, a lower mold 222, and a mold core (not shown) installed on the upper mold 111 or the lower mold 222. A cavity for molding shoes is provided between the mold 111 and the lower mold 222; in order to see the structures of the upper mold 111 and the lower mold 222 clearly, in FIG. 11, the upper mold 111 is turned upside down. The upper mold 111 or the lower mold 222 is equipped with a microporous feed check valve 10, the upper mold 111 or the lower mold 222 is provided with an old material absorption device 20', and the upper mold 111 or the lower mold 222 is installed There is a gate part 30 for injecting molten material into the mold cavity; the gate part 30 has a miniature gate, and the discharge port of the microporous feed check valve 10 communicates with the old material absorption device 20 ', the old material absorbing device 20' communicates with the gate part 30, and the gate part 30 communicates with the mold cavity.

It should be noted that: the microporous one-way injection shoe mold of the present invention is provided with an old material absorption device 20' through the upper mold 111 or the lower mold 222, and the outlet of the microporous feed one-way valve 10 is connected to the old material absorption device 20', it is convenient to directly introduce the remnants of the last injection molding into the old material storage area and store them in the old material storage area to avoid affecting the injection molding products and ensure the pass rate of injection molding products. At the same time, it facilitates the collection of residual materials, avoids the cumbersome cleaning of the upper mold 111 or the lower mold 222 after injection molding, and can reduce costs. A gate part 30 for injecting molten material into the mold cavity is installed on the upper mold 111 or the lower mold 222; the old material absorbing device 20' communicates with the gate part 30, and the gate part 30 communicates with the cavity. Therefore, the microporous unidirectional injection shoe mold of the present invention is easy to clean, has high production efficiency, reduces product defects, improves product yield and pass rate, and reduces production costs.

As shown in Figures 1 to 6, in the present invention, the microporous feed check valve 10 includes a valve body 1, and the valve body 1 is provided with a feed port (not shown in the figure) and a discharge port 11, And the liquid channel 12 that connects the feed port and the discharge port 11, the liquid channel 12 is located in the valve body 1; the first blocking member 2 is installed on the feed port of the valve body 1, and the liquid channel 12 The inner wall of the inner wall protrudes toward the center of the liquid channel 12 with a second blocking member 3, and the liquid channel 12 is equipped with a device for realizing the The liquid channel 12 is closed or opened by the ball 4.

The outer wall of the valve body 1 is provided with a boss 13 for positioning, and the boss 13 is provided with a mounting hole 14 for fixing the valve body 1 on the mold; After one side of the boss 13 sinks a certain distance in the direction of the protrusion of the boss 13 and retreats to a certain position, an overflow groove 15 is provided, and the bottom of the overflow groove 15 corresponds to the bottom of the valve body 1. The discharge port 11 is provided with an arc-shaped notch 17 leading to the discharge port 11 of the valve body 1 .

In this embodiment, as shown in FIGS. 1 to 6 , further preferably, the inlet of the valve body 1 is provided with a recess 16 for installing the first blocking member 2 . The first blocking part 2 is a stopper, and the stopper is provided with a concave cavity 21 with two ends being open, with one end of the concave cavity 21 close to the second blocking part 3 as the inner end, and the other end as the outer end, The diameter of the outer opening 22 of the cavity 21 is smaller than the diameter of the inner opening 23 , and the diameter of the outer opening 22 is smaller than the diameter of the ball 4 . Through the above improvements, it is convenient to disassemble or assemble the first blocking member 2 , facilitate processing, and facilitate assembly of the valve body 1 . Moreover, on the one hand, it is beneficial to prevent the ball 4 from escaping from the liquid passage 12 of the valve body 1; The diameter of the ball 4 is smaller than the diameter of the ball 4, and the ball 4 directly cooperates with the cavity 21 to close the liquid passage 12. The sealing effect is good and the service life is long. It does not need to be used with other parts to achieve sealing, which is conducive to reducing the failure rate.

As a further preference in this embodiment, the second blocking member 3 is several raised lines, and the several raised lines are arranged along the feeding direction of the valve body 1 . Through the above improvement, the convex structure is adopted, which is convenient for processing, and can reduce the resistance to the molten material flowing through the valve body 1, and has little influence on the molten material flowing through the valve body 1, so as to ensure the flow rate of the molten material per unit time. It is beneficial to ensure the injection molding pressure of the molten material flowing through the valve body 1 .

Preferably, the arc-shaped notch 17 forms an included angle with the discharge port 11 of the valve body 1 that is greater than zero and less than 90 degrees. Through the above improvement, the processing of the mold is facilitated, the manufacturing cost of the mold is reduced, and at the same time, the removal of injection molding waste is facilitated.

As shown in Figures 1 to 6, preferably, the overflow tank 15 is in the shape of a door, and the overflow tank 15 includes a first tank wall 151, an arc-shaped connecting portion 152 and a second tank wall 153, and the first tank wall 153 One end of the first groove wall 151 and one end of the second groove wall 153 are respectively connected to two ends of the arc-shaped connecting portion 152 . Through the above improvement, the molten material injected into the overflow of the mold cavity can be accommodated, which is beneficial to the cleaning and cleaning of the mold and facilitates another injection molding.

Preferably, the valve body 1 is provided with a first positioning block 18 and a second positioning block 19 integrally formed with the valve body 1 at positions corresponding to the first groove wall 151 and the second groove wall 153, and the The first positioning block 18 and the second positioning block 19 are respectively located on two sides of the discharge port 11 of the valve body 1 . Both the first positioning block 18 and the second positioning block 19 are provided with protruding feet 5 that cooperate with the boss 13 to realize positioning, and the protruding feet 5 and the boss 13 are located on the same side of the valve body 1 superior. At the same time, the protruding feet 5 can be directly buckled on the mold, which facilitates the fixing of the valve body 1 and prevents the overall valve body 1 from moving during injection molding; The concave portion 131, the concave portion 131 can directly cooperate with the mold to achieve positioning, and is beneficial to block the displacement or movement of the valve body 1 and improve the quality of the injection molding product.

Preferably, the portion of the valve body 1 between the first positioning block 18 and the second positioning block 19 has an inclination toward the bottom of the overflow groove 15 . Through the above improvements, it is convenient to process the installation position of the microporous feed check valve 10 of the present invention on the mold, and at the same time, it is convenient to disassemble or replace on the mold.

As a further preference in this embodiment, the first positioning block 18 and the second positioning block 19 are symmetrical with respect to the vertical plane of the valve body 1, and the protruding feet 5 are integrally formed with the first positioning block 18 and the second positioning block 19 It is beneficial to reduce the manufacturing cost, and there are two protruding feet 5, which limit the movement of the valve body 1 in the left and right directions.

It should be noted that the microporous feeding one-way valve 10 in the present invention is provided with a feed port and a discharge port 11 on the valve body 1, and a liquid channel 12 connecting the feed port and the discharge port 11, and the liquid The channel 12 is located in the valve body 1; the feed port of the valve body 1 is equipped with a first blocking member 2, and the middle part of the liquid channel 12 protrudes to the center of the liquid channel 12 with a second blocking member 3, the first blocking member 2 and the second Balls 4 for closing or opening the liquid passage 12 are installed in the liquid passage 12 between the blocking parts 3; the one-way flow of the valve body 1 can be realized, the opening and closing are convenient, and no manual operation is required. The outer wall of the valve body 1 is provided with a boss 13 for positioning, and the boss 13 is provided with a mounting hole 14 for fixing the valve body 1 on the mould; it is convenient for the installation and fixing of the valve body 1 on the mould, and at the same time , it is convenient to process the position on the mold for installing the valve body 1, which is beneficial to the layout of the mold cavity and runners on the mold. An overflow groove 15 is provided on the side away from the boss 13 on the valve body 1, and the bottom of the overflow groove 15 is provided with an arc-shaped notch 17 corresponding to the discharge port 11 of the valve body 1, and the arc-shaped notch 17 leads to The discharge port 11 of the valve body 1. With the above-mentioned structural arrangement, the molten material injected into the overflow of the mold cavity can be accommodated, which is conducive to the return of the overflow molten material to the flow channel of the mold after the microporous feed check valve 10, saving materials, facilitating the recovery of materials, and convenient recycling. One-time cleaning and cleaning of the mold before injection reduces the cumbersome cleaning and cleaning of the mold, which is conducive to reducing production costs. In summary, the microporous feeding one-way valve 10 of the present invention has a unique shape, can save injection molding raw materials, improve product quality, and reduce production costs.

What needs to be specially explained here is that the microporous feed check valve 10 in the present invention communicates with the main feed channel of the mold, and is fastened on the mold by screws. Overflow grooves 15 are respectively arranged on the surface where the valve body 1 cooperates with the upper die 111 or the lower die 222, which can prevent material leakage on the mated surface of the upper die 111 and the lower die 222, and can store a certain amount of overflowing raw material. Through the arc-shaped notch 17 and the boss 13 on the valve body 1, the effect of force during injection or return can be reduced to avoid movement and affect injection molding. The valve body 1 is shaped like a polyhedron. The liquid channel 12 in the valve body 1 forms a bell mouth shape along the feeding direction. There are three second blocking parts 3 in the liquid channel 12 of the valve body 1, which limit the movement distance of the ball 4 in the valve cavity. and location. The ball 4 can bounce or roll freely in the liquid channel 12 between the first blocking member 2 and the second blocking member 3 . In the microporous feeding one-way valve 10 of the present invention, balls 4 and stoppers are sequentially arranged along the feeding direction. Inject into the liquid channel 12 along the feeding direction, and the liquid channel 12 is in a conductive state. After the injection is completed, the reaction force of the return of the raw material will push the ball 4 to block the outer opening 22 of the material feeding of the stopper, realizing a single Direct feed, no material leakage, material saving, each injection mold can save 5-30 grams of recycled material.

As shown in Figures 7 to 12, in the present invention, the old material absorbing device 20' includes a main runner 1' and a sub-runner 2' opened on the upper mold 111 or the lower mold 222, and the inlet of the main runner 1' The feed end is connected to the outlet of the microporous feed check valve 10 on the upper mold 111 or the lower mold 222, and one end of the runner 2' is connected to the main runner 1', and the runner 2' The other end of the gate is connected with a sprue part 30, and there are two sub-runners 2', and the two sub-runners 2' are respectively located on both sides of the main runner 1', and the main runner 1 A filter mechanism 4' is provided at the junction with the sub-runner 2'; the discharge end of the main runner 1' is connected with an old material storage area 5' for storing old material, and the old material storage area 5' is connected with a vacuum mechanism 6 for vacuuming the runner.

Specifically: the old material storage area 5' and the vacuum mechanism 6 are located on the same axis of the main runner 1'. The old material storage area 5' has a roughly rectangular structure, and the four corners of the rectangle are provided with an arc-shaped groove 51 with a radian larger than a semicircle. , the notch of the arc-shaped groove 51 is smaller than the diameter of the arc-shaped groove 51; this setting is more conducive to collecting the residual material remaining in the main runner 1' of the last injection molding, and at the same time it is convenient for vacuuming and exhausting more quickly, which helps To improve injection molding efficiency.

Preferably in this embodiment, as shown in Fig. 7 to Fig. 10, the main runner 1' is butterfly-shaped as a whole, and the sub-runner 2' is symmetrical about the axis of the sub-runner 2'. Specifically: the sprue 2' is connected to the two wings of the butterfly-shaped main sprue 1'. Through the above improvements, the loss of injection molding pressure can be reduced, and at the same time, it is convenient to recycle the residual material and provide uniformity for the sprue 2'. The pressure is more conducive to injection molding.

Preferably, the filter mechanism 4' includes a filter tank 41, and the filter tank 41 is arranged along the flow direction of the injection molding material in the mould. Through the above improvements, the molten raw materials can be effectively filtered to prevent impurities from clogging the gate or reducing product quality.

In the present invention, as shown in Figures 7 to 12, the gate part 30 includes a gate column 31, the gate column 31 is installed on the mold, and the gate column 31 is provided with micro-hole arcs. Shaped gate 312, the micro-hole arc gate 312 is banana-shaped. Specifically: the gate column 31 is installed on the upper mold 111 or the lower mold 222, and the micro-hole arc gate 312 is correspondingly connected to the discharge end of the runner 2' provided on the upper mold 111 or the lower mold 222 Above, the outer surface of the sprue post 31 is provided with threads, which are fixed on the upper mold 111 or the lower mold 222 through screw fit. Through the above improvement, the maintenance, replacement and adjustment of the gate are facilitated. This injection method is a submerged injection, and the traditional injection method has a flat injection at the injection port. Under the same conditions, the thickness of the mold can be reduced by about 10MM, which saves the manufacturing cost of the mold. At the same time, the operating space between the upper mold 111 and the mold core is increased, and the material of the mold is saved.

In the present invention, the gate of the old material absorbing device 20' is a microporous arc gate 312, and the microporous arc gate 312 directly leads to the cavity, so the section close to the molded injection product is smaller, forming a smooth, Curved micro-hole feed channel, so that when the upper mold 111 and the lower mold 222 are opened, the tail material is automatically disconnected from the molded shoe, and there is no need to manually trim the feed port; and the scar is extremely small, which improves the quality of the finished product and reduces material waste. Reduce the rate of defective products.

Preferably, the discharge end of the main runner 1' gradually narrows toward the old material storage area 5'. Through the above improvements, it is more beneficial to gather the residual materials of the last injection molding, and it is convenient to recycle the residual materials.

As shown in Figures 7 to 12, further preferably, the vacuum pumping mechanism 6 includes a vacuum pump (not shown), a vacuum air channel 61 and an exhaust port 62, and one end of the vacuum air channel 61 leads to the The old material storage area 5', the other end of the vacuum air channel 61 communicates with the exhaust port 62, and the exhaust port 62 is connected with the air inlet of the vacuum pump. Through the above improvements, the gas discharged from the mold is effectively filtered to prevent the residual material from running out with the gas or blocking the exhaust port 62 . What needs to be further elaborated here is that the vacuum pump can be installed on the mold, or installed on the machine for installing the mold. In order to prevent residual materials from clogging the exhaust port 62, the diameter of the vacuum air channel 61 is smaller than that of the filter tank 41 here.

When shooting, the new material will suck out the old material remaining on the upper mold 111 or the lower mold 222, and use the vacuum mechanism to quickly absorb the old material, so that the sole formed by the new material will not be mixed with the old material, improving the performance of the sole. Quality, no waste of materials, cost saving.

Preferably in this embodiment, the old material absorbing device 20' also includes a waste material removal part 7 installed on the mould, and the waste material removal part 7 includes a drag block 71 and is used to push the drag block 71 to move The power assembly (not shown in the figure), where the power assembly can be operated by manipulator or manually. The power assembly is connected to the dragging block 71, and the dragging block 71 is provided with a dragging groove 712, and the dragging groove 712 is located on the runner 2', and the dragging groove 712 and Corresponding parts of the runners 2' are overlapped. Through the above improvements, the power assembly can directly pull the waste from the main sprue 1' and sub-runner 2' out of the sprue, which facilitates the removal of the waste without the need for personnel to participate, improves production efficiency, helps reduce costs, and avoids artificial main sprues The hassle and hassle of scrapping 1' and sprue 2'.

As a preferred mode: the bottom of the dragging chute 712 is more than 1/2 arc-shaped, and the distance between the two side walls of the dragging chute 712 is smaller than the arc-shaped bottom of the dragging chute 712 diameter of.

In order to facilitate the understanding of how the waste removal part 7 pulls out the hardened injection molding waste in the main runner 1' and the sub-runner 2', it will be further elaborated:

Because the main runner 1', the sub-runner 2' and the old material absorption device 20' are arranged on the side of the upper and lower molds, specifically, the main runner 1', the sub-runner 2' and the old material absorption device 20' are all on the upper mold 111 or the lower mold 222, wherein the main runner 1' communicates with the old material absorption device 20', and a vacuum is formed inside the old material absorption device 20'; in the present invention, the drag material of the waste material removal part 7 The block 71 and the sprue 2' are arranged on the clamping surfaces of different molds. For example, the dragging block 71 is arranged on the clamping surface of the upper mold, and the runner 2' is arranged on the clamping surface of the lower mold. And the drag trough 712 overlaps and communicates with the corresponding part of the runner 2'. When the injection molding material is injected into the mold cavity through the main runner 1' and the sub-runner 2', after heat preservation and cooling, the waste removal part 7 is separated from the sub-runner 2' when the mold is opened, and the main runner 1' and the sub-runner The hardened injection molding waste in the road 2' is pulled out through the dragging material block 71, and then the hardened injection molding waste is removed from the dragging material block 71 by a manipulator or manually.

During the mold opening process of the above process, when the mold is opened, the waste removal part 7 is separated from the main runner 1' and the sub-runner 2', and the waste removal part 7 separates the existing parts in the main runner 1' and the sub-runner 2' When the hardened injection molding waste is pulled out, the small connection between the microporous arc gate 312 and the injection molded product is also broken, so as to complete the trimming of the injection molded product, and avoid manual injection of the injection gate on the injection molded product after the traditional mold opening Repair the defects in the place and reduce personnel participation, so as to achieve the purpose of reducing costs and improving efficiency.

It should be noted that, the old material absorbing device 20' in the present invention, through the main runner 1' and the sub-runner 2' opened on the mold, one end of the sub-runner 2' is connected to the main runner 1', and the sub-runner The other end of the runner 2' is connected with a sprue part 30, and there are at least two sub-runners 2', and the sub-runners 2' are located on both sides of the main runner 1', which is convenient for injecting injection molding materials into the injection cavity at the same time , to ensure that the pressure of the injection molding material injected into the cavity is the same, and to ensure that the cavity is filled. In addition, it is also beneficial to the layout of the cavity and runners, and saves the manufacturing cost of the mold. A filtering mechanism 4' is provided at the junction of the main runner 1' and the sub-runner 2'; it can effectively filter the injection molding raw materials injected into the cavity, and prevent defects or unqualified products from being injected. The discharge end of the main sprue 1' is connected with an old material storage area 5' for storing old material, and the old material storage area 5' is connected with a vacuum mechanism 6 for pumping the runner. Relying on the vacuum mechanism 6 to exhaust the material channel and the cavity, it is also convenient to directly attract the residual material of the last injection into the old material storage area 5' and store it in the old material storage area 5' to avoid affecting the injection molding product. Guarantee the qualification rate of injection molding products. At the same time, it facilitates the collection of residual materials and avoids the cumbersome cleaning of the mold after injection molding. The old material absorbing device 20' of the present invention can also effectively reduce employee participation and reduce production costs. In summary, it can be seen that the old material absorbing device 20' in the present invention can absorb residual material, improve the qualified rate of injection parts, and can save raw materials and reduce costs.

The present invention has been described in detail above with reference to the accompanying drawings, but the embodiments of the present invention are not limited to the above-mentioned embodiments. Those skilled in the art can make various modifications to the present invention according to the prior art, all of which belong to the protection scope of the present invention.

Claims (10)

1. a micropore unidirectional injection footwear mould, including upper die and lower die, and is installed on upper mold or lower mold Core rod, be provided with the die cavity for molding shoes between upper die and lower die；It is characterized in that: described Being provided with micropore feed check valve in upper mold or lower mold, described upper mold or lower mold are provided with old material and absorb dress Putting, described upper mold or lower mold being provided with for melt being injected the mold gate components in described die cavity；Institute Stating mold gate components and have miniature cast gate, the discharging opening of described micropore feed check valve connects described old material and inhales Receiving apparatus, described old material absorption plant connects described mold gate components, and described mold gate components connects described type Chamber.

A kind of micropore unidirectional injection footwear mould the most according to claim 1, it is characterised in that: described Micropore feed check valve includes valve body, described valve body is provided with charging aperture and discharging opening, and connects Charging aperture and the fluid passage of discharging opening, described fluid passage is positioned at described valve body；Described valve body Being provided with the first stop member on charging aperture, the medial wall of described fluid passage is to described fluid passage Center is convexly equipped with the second stop member, and described fluid passage corresponds to described first stop member and second Position between stop member is equiped with for realizing the ball that described fluid passage is closed or opened；Institute Stating and be provided with the boss for playing the role of positioning on valve body lateral wall, described boss is provided with for by institute State the installing hole that valve body is fixed in described upper mold or lower mold；Described boss is deviated from described valve body Side is provided with overflow launder, and the bottom of described overflow launder is provided with arc corresponding to the discharging opening of described valve body Shape recess, described arc-shaped notch leads to the discharging opening of described valve body.

A kind of micropore unidirectional injection footwear mould the most according to claim 2, it is characterised in that: described The pit for installing described first stop member it is provided with on the charging aperture of valve body；Described second stops Parts are several raised lines, and several described raised lines are arranged along described valve body feedstock direction；Described first Stop member is block, and described block is provided with the cavity that two ends are opening-like, leans on described cavity One end of the most described second stop member is inner, and the other end is outer end, the outer end opening of described cavity Diameter less than the diameter of interior end opening, and the diameter of outer end opening is less than the diameter of described ball.

A kind of micropore unidirectional injection footwear mould the most according to claim 2, it is characterised in that: described Arc-shaped notch forms, with the discharging opening of described valve body, the angle being more than zero degree less than 90 degree；Described overflow launder In door font, described overflow launder includes the first cell wall, arc connecting portion and the second cell wall, described first One end of cell wall and second cell wall one end two ends with described arc connecting portion respectively are connected respectively；Described On valve body, the position of corresponding described first cell wall and the second cell wall is provided with and described valve body molding First locating piece and the second locating piece, described first locating piece and the second locating piece lay respectively at described valve The both sides of the discharging opening of body.

A kind of micropore unidirectional injection footwear mould the most according to claim 4, it is characterised in that: described The convex foot coordinating described boss to realize location it is provided with on first locating piece and the second locating piece, described Convex foot and described boss are positioned on the same side of described valve body；Described first it is positioned at fixed on described valve body Part between position block and the second locating piece has the inclination angle towards described isopipe root.

A kind of micropore unidirectional injection footwear mould the most according to claim 1, it is characterised in that: described Always expect absorption plant, include the main running channel being opened in described upper mold or lower mold and point running channel, divide and water One end, road is connected on described main running channel, and the other end of described point of running channel connects described mold gate components, Described point of running channel at least two, described point of running channel is positioned at the both sides of described main running channel, described main running channel The junction of described point of running channel is provided with filter mechanism；The discharge end of described main running channel connect have for Store old material expects storage area always, described old material storage area connects have and takes out true effect for playing running channel Vacuum device.

A kind of micropore unidirectional injection footwear mould the most according to claim 6, it is characterised in that: described Main running channel is overall in buttferfly-type, and described point of running channel is about the axisymmetrical of described point of running channel；Described filtration Mechanism includes filter tank, and the discharge end of described main running channel is gradually reduced to described old material storage area.

A kind of micropore unidirectional injection footwear mould the most according to claim 6, it is characterised in that: described Vacuum device includes that vacuum pump, vacuum way and air vent, one end of described vacuum way lead to institute Stating and always expect storage area, the other end of described vacuum way communicates with described air vent, described air vent with The air inlet of described vacuum pump connects.

9. according to a kind of micropore unidirectional injection footwear mould described in claim 1 or 6, it is characterised in that: This always material absorption plant also include and be installed on waste material in described upper mold or lower mold and remove parts, described useless Material removes parts and includes material drag block and for the Power Component promoting material drag block to move, described power packages Part is connected with described material drag block, and described material drag block is provided with material drag groove, and described material drag groove is positioned at described Dividing on running channel, described material drag groove overlaps with the appropriate section of described point of running channel.

10. according to a kind of micropore unidirectional injection footwear mould described in claim 1 or 6, it is characterised in that: Described mold gate components includes watering oral pillar, described in water oral pillar and be arranged in described upper mold or lower mold, described in water Offering micropore arc cast gate on oral pillar, described micropore arc cast gate is banana-shaped.