CN219838141U - An automatic demoulding structure for injection molding of special-shaped pipe fittings - Google Patents

Abstract

The utility model discloses an automatic demolding structure of an injection molding special-shaped pipe fitting mold, which comprises a fixed mold assembly and a movable mold assembly, wherein the fixed mold assembly comprises a fixed mold press plate, a first fixed mold foot, a hot runner valve needle supporting plate, a second fixed mold foot and a fixed mold cavity mold frame which are sequentially connected, the movable mold assembly comprises a movable mold cavity mold frame, a movable mold foot and a movable mold press plate which are sequentially connected, the automatic demolding structure further comprises a special-shaped guide post, a pull rod, an inclined guide post, a limiting device, a first sliding block and a second sliding block, the special-shaped guide post, the pull rod and the inclined guide post are fixed on the fixed mold cavity mold frame, the limiting device is fixed on the movable mold cavity mold frame, the first sliding block and the second sliding block are positioned on the movable mold cavity mold frame, the first sliding block is provided with a first core, and the second sliding block is provided with a second core. The utility model adopts a new structure, and completely realizes the effects of one-die multi-cavity and automatic demoulding; meanwhile, the second sliding blocks are arranged in a staggered sliding way, so that the space is saved, and the purpose of one die with multiple cavities is realized.

Description

An automatic demoulding structure for injection molding of special-shaped pipe fittings

Technical field

The utility model belongs to the technical field of injection molding pipe fitting molds, and specifically relates to an automatic demoulding structure of an injection molding special-shaped pipe fitting mold.

Background technique

Injection molding refers to the use of the extrusion and moldability of plastics to send loose particles or powdery molding materials from the hopper of the injection machine into the high-temperature barrel to heat, melt and plasticize them, turning them into a viscous fluid solution. Driven by the high pressure of the plunger or screw, the injection is injected through the nozzle at the front end of the barrel into the closed mold with a lower temperature at a high flow rate. After a period of pressure holding and cooling, the mold can be released from the mold cavity by opening the mold. Plastic products of certain shapes and sizes.

Special-shaped pipe fitting molds are often limited by the product structure and cannot achieve multiple cavities in one mold, or multiple cavities in one mold lead to high mold costs and very large mold volumes. Molds with the same gram number of products cannot match the same gram number of injection molding machines, and often require larger Tonnage of the injection molding machine to produce is a serious waste of cost, and may not be able to achieve the effect of automatic demoulding. Therefore, it is necessary to design a new structure that can achieve the effect of multiple cavities in one mold and automatic demoulding, thereby reducing production costs.

Utility model content

In view of the above problems, the present invention provides an automatic demoulding structure for injection molding of special-shaped pipe fittings, which solves the technical problems of existing special-shaped pipe fittings such as the inability to realize multiple cavities in one mold and automatic demoulding.

In order to achieve the above purpose, the technical solution adopted by this utility model is:

An automatic demoulding structure for injection molding of special-shaped pipe fittings, including a fixed mold assembly and a movable mold assembly. The fixed mold assembly includes a fixed mold press plate, a first fixed mold foot, and a heat flow device connected in sequence from top to bottom. The valve needle support plate, the second fixed mold mold foot and the fixed mold cavity mold frame, the movable mold assembly includes a movable mold cavity mold frame, a movable mold mold foot and a movable mold press plate connected in sequence from top to bottom, The automatic stripping structure also includes a special-shaped guide column, a pull rod, an inclined guide column, a limiting device, a first slide block and a second slide block. The special-shaped guide column, pull rod and inclined guide column are fixed to the fixed mold cavity mold frame. , the limiting device is fixed on the mold frame of the movable model cavity and functions as a movement limiter. The first slide block and the second slide block are positioned on the mold frame of the movable model cavity. The first slide block is provided with a first core, and the second slide block is provided with a first core. The block is provided with a second core.

Further, the first core and the second core constitute a core unit, and the number of the core units is multiple, evenly distributed between the fixed mold cavity mold frame and the movable mold cavity mold frame.

Further, a hot runner diverter plate is provided below the fixed mold press plate. The hot runner diverter plate is fixed on the hot runner valve needle support plate and is used to divert the hot runner.

Further, the special-shaped guide post is provided through the first slide block, and the inclined guide post is provided through the second slide block.

Further, the special-shaped guide columns are symmetrically arranged on both sides of the lower part of the fixed mold cavity mold frame, and the tie rods are arranged at the four corners of the fixed mold cavity mold frame.

Further, a gate is provided between the first core and the second core, and the product is provided at a position between the first core and the second core.

Further, there are two first slide blocks and two second slide blocks respectively, which are symmetrically arranged on both sides of the mold frame of the movable mold cavity, and a baffle is also provided on the inner side of the first slide block.

Further, the limiting device includes a first limiting block and a second limiting block that cooperate with each other. The second limiting block is provided with a limiting column hole and a limiting column, and is also provided at the end of the second limiting block. There are springs.

Further, the first limiting block is arranged on the mold frame of the movable mold cavity, the second limiting block is connected with a spring, and is fixed to the first slide block through the limiting column. The limiting column hole is the upper and lower position of the second limiting block. Movement acts as a space limiter.

Further, a hot runner temperature control box junction box is also provided on the side of the hot runner valve needle support plate.

Through the technical solution of this utility model, the limitations of the product structure of the heterosexual pipe fitting mold are broken through, and the new structure is adopted to fully realize the effect of one mold with multiple cavities and automatic demoulding; at the same time, the misaligned sliding arrangement of the second slider saves space. , to achieve the purpose of one mold with multiple cavities.

Description of the drawings

Figure 1 is a schematic structural diagram of the utility model;

Figure 2 is a schematic structural diagram of the utility model (the movable mold assembly is omitted);

Figure 3 is a schematic top view of the structure of Figure 2;

Figure 4 is a top view of the limiting device of the present invention;

Figure 5 is a front structural view of the limiting device and pull rod of the present utility model;

Figure 6 is a schematic diagram of the demoulding state of the present utility model;

In the picture: 1. Fixed mold press plate; 2. First fixed mold foot; 3. Hot runner manifold; 4. Hot runner valve needle support plate; 5. Hot runner temperature control box junction box; 6. Second fixed mold Mold feet; 7. Fixed mold cavity mold frame; 8. Movable mold cavity mold frame; 9. Movable mold mold feet; 10. Dynamic mold press plate; 11. Special-shaped guide column; 12. Tie rod; 13. Inclined guide column; 14. Gate; 15. First slider; 16. Limiting device; 161. First limiting block; 162. Second limiting block; 163. Limiting column hole; 164. Limiting column; 165. Spring ; 17. Baffle; 18. Second slider; 19. Product; 20. First core; 21. Second core.

Implementation

In order to make the purpose, technical solutions and advantages of the present utility model clearer, the technical solutions of the present utility model will be described in detail below. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present utility model, all other implementations obtained by those of ordinary skill in the art without any creative work fall within the scope of protection of the present utility model.

As shown in Figure 1-6, an automatic demoulding structure of an injection mold for special-shaped pipe fittings includes a fixed mold assembly and a movable mold assembly. The fixed mold assembly includes fixed mold press plates 1 connected in sequence from top to bottom. , the first fixed mold foot 2, the hot runner valve needle support plate 4, the second fixed mold foot 6 and the fixed mold cavity mold frame 7. The movable mold assembly includes movable mold cavities connected in sequence from top to bottom. Mold frame 8, movable mold feet 9 and movable mold press plate 10.

The automatic stripping structure of the present invention also includes a special-shaped guide post 11, a pull rod 12, an inclined guide post 13, a limiting device 16, a first slider 15 and a second slider 18. The special-shaped guide post 11, pull rod 12 and The inclined guide post 13 is fixed on the fixed model cavity mold frame 7, the limiting device 16 is fixed on the movable model cavity mold frame 8, and serves as a movement limiter. The first slider 15 and the second slider 18 are positioned on the movable model cavity mold frame. 8, the number of the first slide block 15 and the second slide block 18 is two respectively, and they are symmetrically arranged on both sides of the movable mold cavity mold frame 8. A baffle is also provided on the inner side of the first slide block 15. 17.

The first slider 15 is provided with a first core 20 , and the second slider 18 is provided with a second core 21 . The first core 20 and the second core 21 form a core unit. There are multiple core units, which are evenly distributed between the fixed mold cavity frame 7 and the movable mold cavity frame 8 to achieve one mold with multiple molds. cavity. A gate 14 is provided between the first core 20 and the second core 21 , and the product 19 is provided at a position between the first core 20 and the second core 21 .

There is also a hot runner manifold plate 3 under the fixed mold press plate 1. The hot runner manifold plate 3 is fixed on the hot runner valve needle support plate 4. The hot runner manifold plate 3 is used to divert the hot runner to meet the needs of multiple molds. cavity requirements. A hot runner temperature control box junction box 5 is also provided on the side of the hot runner valve needle support plate 4.

The special-shaped guide post 11 of the present invention is provided through the first slide block 15 , and the inclined guide post 13 is provided through the second slide block 18 . Among them, the special-shaped guide columns 11 are symmetrically arranged on both sides of the lower part of the fixed mold cavity mold frame 7 , and the tie rods 12 are arranged at the four corners of the fixed mold cavity mold frame 7 . The end of the tie rod 12 has a 90-degree right-angled surface buckle, and the other end is set through the first limiting block 161 .

The limiting device 16 of the present invention includes a first limiting block 161 and a second limiting block 162 that cooperate with each other. The second limiting block 162 is provided with a limiting column hole 163 and a limiting column 164. In the second limiting block The end of 162 is also provided with a spring 165. The first limiting block 161 and the second limiting block 162 have inclined surfaces that can cooperate with each other.

Among them, the first limiting block 161 is arranged on the movable mold cavity mold frame 8, the second limiting block 162 is connected with a spring 165, and is fixed to the first slider 15 through the limiting column 164, and the limiting column hole 163 is the second limiting block 161. The limiting block 162 moves up and down to play a space limiting role.

The mold production process of the present utility model is as follows: after the injection molding cycle is completed, the mold opening stage is reached. The mold opening begins. Through the plane movement of the special-shaped guide pillar 11, the inclined guide pillar 13 slides out of the second slider 18. At this time, the second slider Half of the product 19 at block 18 has separated from the second core 21, and the other half of the product 19 is on the first core 20 of the first slider 15; next, the 90-degree right-angle surface buckle of the tie rod 12 and the second limiting block are The movement of 162 causes the first slider 15 to float up, causing the product to escape from the mold cavity. At the same time, during the traveling process, the first limiter 161 resists the second limiter 162 and sinks under the action of the spring 165, causing the pull rod 12 to The whole product can be detached without interference, and then slide out of the first slide block 15 through the slope of the special-shaped guide column 11. While sliding out, the other half of the product 19 passes through the action of the baffle 17, causing the product to escape from the first shape of the first slide block 15. The core 20 achieves the effect of demoulding; at the same time, through the misalignment of the second slider 18, the arrangement saves space and achieves the purpose of one mold with multiple cavities.

The above are only specific implementations of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person familiar with the technical field can easily think of changes or modifications within the technical scope disclosed by the present utility model. Replacements shall be covered by the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.

Claims (10)

1. The utility model provides an automatic drawing of patterns structure of special-shaped pipe fitting mould moulds plastics, its characterized in that, includes cover half subassembly and movable mould subassembly, the cover half subassembly includes cover half press plate (1), first cover half mould foot (2), hot runner needle layer board (4), second cover half mould foot (6) and cover half die cavity die frame (7) that connect gradually from the top down that set up, movable mould foot (9) and movable mould press plate (10), automatic drawing of patterns structure still includes special-shaped guide post (11), pull rod (12), oblique guide post (13), stop device (16), first slider (15) and second slider (18), special-shaped guide post (11), pull rod (12) and oblique guide post (13) are fixed in cover half die cavity die frame (7), and stop device (16) are fixed in movable mould cavity die frame (8), play the removal limiting effect, and first slider (15) and second slider (18) are located on movable mould frame (8), and first core (21) are provided with first core (20).

2. The automatic demolding structure of the injection molding special-shaped pipe fitting mold according to claim 1, wherein the first core (20) and the second core (21) form a plurality of core units, and the core units are uniformly distributed between the fixed mold cavity mold frame (7) and the movable mold cavity mold frame (8).

3. The automatic demolding structure of the injection molding special-shaped pipe fitting mold according to claim 1, wherein a hot runner splitter plate (3) is further arranged below the fixed mold press plate (1), and the hot runner splitter plate (3) is fixed on the hot runner valve needle supporting plate (4) and used for splitting a hot runner.

4. An automatic demoulding structure for an injection moulding special-shaped pipe fitting mould according to claim 1, characterized in that the special-shaped guide post (11) is arranged through a first sliding block (15), and the inclined guide post (13) is arranged through a second sliding block (18).

5. The automatic demolding structure of the injection molding special-shaped pipe fitting mold according to claim 1, wherein the special-shaped guide posts (11) are symmetrically arranged at two sides of the lower part of the fixed mold cavity mold frame (7), and the pull rods (12) are arranged at four corners of the fixed mold cavity mold frame (7).

6. An automatic demolding structure for injection molding special-shaped pipe dies according to claim 1, characterized in that a gate (14) is provided between the first core (20) and the second core (21), and the article (19) is provided at a position between the first core (20) and the second core (21).

7. The automatic demolding structure of the injection molding special-shaped pipe fitting mold according to claim 1, characterized in that the number of the first sliding blocks (15) and the second sliding blocks (18) is two, the first sliding blocks and the second sliding blocks are symmetrically arranged at two sides of the movable mold cavity mold frame (8), and a baffle (17) is further arranged at the inner side of the first sliding blocks.

8. The automatic demolding structure of an injection molding special-shaped pipe fitting mold according to claim 5, wherein the limiting device (16) comprises a first limiting block (161) and a second limiting block (162) which are matched with each other, the second limiting block (162) is provided with a limiting column hole (163) and a limiting column (164), a spring (165) is further arranged at the end part of the second limiting block (162), the end part of the pull rod (12) is provided with a 90-degree right-angle surface buckle, and the other end of the pull rod passes through the first limiting block (161).

9. The automatic demolding structure of an injection molding special-shaped pipe fitting mold according to claim 8, wherein the first limiting block (161) is arranged on the movable mold cavity mold frame (8), the second limiting block (162) is connected with a spring (165), the first limiting block (15) is fixed through a limiting column (164), and a limiting column hole (163) plays a space limiting role for the second limiting block (162) to move up and down.

10. The automatic demolding structure of the injection molding special-shaped pipe fitting mold according to claim 1, wherein a hot runner temperature control box junction box (5) is further arranged on the side part of the hot runner valve needle supporting plate (4).