Automatic demolding structure of multi-cavity commander box mold

Abstract

The utility model discloses an automatic demoulding structure of a multi-cavity commander box mould, which comprises an upper compound plate, a fixed mould frame, a movable mould frame and a lower compound plate which are sequentially arranged from top to bottom, a stripper plate is arranged between the upper compound plate and the fixed mould frame, a base plate is arranged between the movable mould frame and the lower compound plate, and the base plate is fixed on the lower compound plate through a group of mould feet. A center core is fixedly arranged on the base plate and penetrates through the movable mold frame, sliding block cores are arranged on the periphery of the center core, a first I-shaped block is arranged at the end of each sliding block core, the first I-shaped blocks are fixed through pressing strips, dovetail grooves are formed in the first I-shaped blocks in the height direction of the first I-shaped blocks, and a second I-shaped block is fixedly arranged on the base plate. According to the mold release mechanism, a product is subjected to mold release by adopting floating of the movable mold frame, internal drawing of a core is realized, a product is not provided with an ejector rod, and the aesthetic degree is improved. The mold release mechanism has the advantages that the mold release is realized by adopting floating of the movable mold frame, internal drawing of a core is realized, and the product is not provided with an ejector rod.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an automatic demoulding structure of a multi-cavity command box mold. Background Art

[0002] At present, injection mold processing, according to the analysis of the structure and shape of the product, the commander box can be divided into single-fork, double-fork, three-fork and four-fork. In particular, the four-fork (four sockets) product requires multiple core-pulling structures. The ordinary mold structure cannot meet the needs of multiple cavities and efficiency improvement. It is a difficult problem to achieve the goal of reducing costs and increasing efficiency with multi-cavity molds.

[0003] To this end, the utility model provides an automatic demoulding structure for a multi-cavity commander box mold, which adopts a three-plate mold point gate structure. The demoulding of the product adopts mold frame floating to ensure that the core is pulled out of the product and the product falls safely. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of the utility model is to provide an automatic demolding structure for a multi-cavity commander box mold. The slider cores on all sides are pulled out under the separation action of the dovetail-shaped protrusions and the dovetail grooves, which can quickly and efficiently ensure the safe dropping of the product.

[0005] The technical solution of the utility model is as follows:

[0006] A kind of automatic demolding structure of multi-cavity command box mould comprises an upper composite plate, a fixed mould frame, a movable mould frame and a lower composite plate which are arranged in sequence from top to bottom, a stripping plate is arranged between the upper composite plate and the fixed mould frame, a pad is arranged between the movable mould frame and the lower composite plate, the pad is fixed to the lower composite plate by a group of mould feet, a central core is fixedly arranged on the pad, the central core passes through the movable mould frame, a slider core is arranged around the central core, an I-block 1 is arranged at the end of each slider core, the I-block 1 is fixed by a pressure strip, a dovetail groove is opened along the height direction of the I-block 1, wherein the distance from the bottom surface of the I-block 1 provided with the dovetail groove to the corresponding top surface gradually decreases from top to bottom, an I-block 2 is fixedly arranged on the pad, a dovetail-shaped protrusion which matches the size of the dovetail groove is arranged on the I-block 2, and the dovetail-shaped protrusion cooperates with the dovetail groove.

[0007] Furthermore, the distance from the bottom surface of the I-shaped block 2 provided with the dovetail-shaped protrusion to its corresponding top surface gradually increases from top to bottom.

[0008] Furthermore, the I-shaped block 1 and its corresponding slider core are integrally formed.

[0009] Furthermore, an ejector plate is installed on the lower doubler plate, and an ejector plate is provided on the ejector doubler plate.

[0010] Furthermore, it comprises an iron hook, and the iron hook is fixed on the movable mold frame, the backing plate and the ejector plate.

[0011] Furthermore, a group of upper cavities are opened on the lower surface of the fixed mold frame, wherein a group of lower cavities matching the size of the upper cavities are opened on the upper surface of the movable mold frame, wherein the central core and the sliding core are located in the lower cavities.

[0012] Furthermore, the upper cavity and the lower cavity constitute a cavity, wherein the cavity has 4 cavities, 6 cavities or 8 cavities.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1) Compared with the prior art, an I-shaped block 1 is provided at the end of each slider core, the I-shaped block 1 is fixed by a pressure strip, a dovetail groove is provided on the I-shaped block 1, wherein the distance from the bottom surface of the I-shaped block 1 provided with the dovetail groove to its corresponding top surface gradually decreases from top to bottom, an I-shaped block 2 is fixed on the pad, a dovetail-shaped convex block is provided on the I-shaped block 2, and the dovetail-shaped convex block matches the dovetail groove. Under the drive of the ejector rod of the injection molding machine, the ejector plate is pulled by the iron hook, so that the movable mold frame and the product float together, and the slider cores around are pulled out under the separation of the dovetail-shaped convex block and the dovetail groove, thereby ensuring that the product can fall safely;

[0015] 2) The demoulding of the product of the utility model adopts the floating of the movable mold frame, the core is pulled out internally, and the product has no ejector rod, which improves the appearance;

[0016] 3) The demoulding structure of the utility model is reasonably designed, and the demoulding is fast and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of the mold of the utility model;

[0018] Figure 2 It is a partial schematic diagram of the mold of the utility model;

[0019] Figure 3 This is a structural schematic diagram of an I-shaped block of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the second I-shaped block of the utility model;

[0021] Figure 5 This is a bottom view of the fixed mold frame of the utility model;

[0022] Figure 6 This is a top view schematic diagram of the movable mold frame of the utility model;

[0023] Figure 7 It is a top view schematic diagram of the pad of the utility model.

[0024] In the figure: 1. upper compound plate; 2. stripper plate; 3. fixed die frame; 4. movable die frame; 5. pad; 6. die foot; 7. lower compound plate; 8. iron hook; 9. ejector plate; 10. ejector compound plate; 11. I-shaped block 1; 12. dovetail groove; 13. I-shaped block 2; 14. dovetail shaped protrusion; 15. center core; 16. slider core; 17. pressure strip. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with the accompanying drawings, but the scope of protection of the present invention is not limited to the described scope.

[0026] like Figure 1 , 5 As shown in , 6 and 7, an automatic demolding structure of a multi-cavity command box mold comprises an upper composite plate 1, a fixed mold frame 3, a movable mold frame 4 and a lower composite plate 7 which are arranged in sequence from top to bottom, a stripping plate 2 is arranged between the upper composite plate 1 and the fixed mold frame 3, a pad plate 5 is arranged between the movable mold frame 4 and the lower composite plate 7, the pad plate 5 is fixed to the lower composite plate 7 by a group of mold feet 6, an ejector composite plate 10 is installed on the lower composite plate 7, and an ejector plate 9 is arranged on the ejector composite plate 10.

[0027] A group of upper cavities are opened on the lower surface of the fixed mold frame 3, wherein a group of lower cavities matching the size of the upper cavities are opened on the upper surface of the movable mold frame 4, the upper cavities and the lower cavities constitute the mold cavity, wherein the mold cavity is 4 cavities, 6 cavities or 8 cavities, in this embodiment, there are 6 cavities, and the number of cavities of the mold is increased through the structure of the three-plate mold.

[0028] The three-plate mold point gate can ensure that the product can be automatically cut off from the mold. The whole process is fully automated, which can effectively improve production efficiency and reduce the defective rate of products.

[0029] A central core 15 is fixedly provided on the backing plate 5. The central core 15 passes through the movable mold frame 4. A slider core 16 is provided around the central core 15. Specifically, the central core 15 and the slider core 16 are located in the lower mold cavity.

[0030] like Figure 2-3 As shown, an I-shaped block 11 is provided at the end of each slider core 16, and the I-shaped block 11 is fixed by a pressure strip 17. The I-shaped block 11 is provided with a dovetail groove 12 along its height direction, wherein the distance from the bottom surface of the I-shaped block 11 with the dovetail groove to its corresponding top surface gradually decreases from top to bottom, so as to facilitate the floating of the movable mold frame.

[0031] In this embodiment, the I-shaped block 11 and its corresponding slider core 16 are integrally formed.

[0032] like Figure 4As shown, an I-shaped block 13 is fixedly provided on the pad 5, and a dovetail-shaped protrusion 14 matching the size of the dovetail groove 12 is provided on the I-shaped block 13, and the dovetail-shaped protrusion 14 cooperates with the dovetail groove 12. Furthermore, the distance from the bottom surface of the I-shaped block 13 provided with the dovetail-shaped protrusion 14 to its corresponding top surface gradually increases from top to bottom.

[0033] In this embodiment, an iron hook 8 is included, and the iron hook 8 is fixed on the movable mold frame 4, the backing plate 5 and the ejector plate 10.

[0034] The specific demoulding process is as follows:

[0035] After the injection molding is completed, the injection molding machine is turned on, and the fixed mold frame 3 is separated from the stripper plate 2 first, so that the point gate position of the product is pulled off and separated to a distance that ensures that the runner can fall safely. Then the stripper plate 2 and the upper composite plate 1 are separated by a distance of 10-15 mm, and then the movable mold frame 4 and the fixed mold frame 3 are opened. Finally, under the drive of the ejector rod of the injection molding machine, the ejector plate 9 is pulled by the iron hook 8 to make the movable mold frame 4 and the product float together. The slider core 16 around it is pulled out of the dovetail convex block 14 and the dovetail groove 12 under the action of separation, to ensure that the product can fall safely, and finally the mold is closed to enter the next cycle.

Claims

1. An automatic demolding structure for a multi-cavity command box mold, comprising an upper composite plate (1), a fixed mold frame (3), a movable mold frame (4) and a lower composite plate (7) arranged in sequence from top to bottom, a stripping plate (2) being arranged between the upper composite plate (1) and the fixed mold frame (3), a pad (5) being arranged between the movable mold frame (4) and the lower composite plate (7), the pad (5) being fixed to the lower composite plate (7) by a group of mold feet (6), a central core (15) being fixedly arranged on the pad (5), the central core (15) being arranged through the movable mold frame (4), and slider cores (16) being arranged around the central core (15), characterized in that An I-shaped block (11) is provided at the end of each slider core (16), the I-shaped block (11) being fixed by a pressure strip (17), the I-shaped block (11) being provided with a dovetail groove (12) along its height direction, wherein the distance from the bottom surface of the I-shaped block (11) provided with the dovetail groove to the corresponding top surface thereof gradually decreases from top to bottom, the pad (5) being fixed with an I-shaped block (13), the I-shaped block (13) being provided with a dovetail-shaped protrusion (14) having a size matching that of the dovetail groove (12), the dovetail-shaped protrusion (14) being matched with the dovetail groove (12).

2. The automatic demoulding structure of a multi-cavity command box mold according to claim 1 is characterized in that From top to bottom, the distance from the bottom surface of the second I-shaped block (13) provided with the dovetail-shaped protrusion (14) to its corresponding top surface gradually increases.

3. The automatic demoulding structure of a multi-cavity command box mold according to claim 1 is characterized in that The I-shaped block 1 (11) and its corresponding slider core (16) are integrally formed.

4. The automatic demoulding structure of a multi-cavity command box mold according to claim 1 is characterized in that An ejector plate (10) is mounted on the lower ejector plate (7), and an ejector plate (9) is disposed on the ejector plate (10).

5. The automatic demoulding structure of a multi-cavity command box mold according to claim 4 is characterized in that It comprises an iron hook (8), wherein the iron hook (8) is fixed on a movable mold frame (4), a backing plate (5) and an ejector plate (10).

6. The automatic demoulding structure of a multi-cavity command box mold according to claim 1 is characterized in that The fixed mold frame (3) has a group of upper mold cavities on its lower surface, and the movable mold frame (4) has a group of lower mold cavities on its upper surface that match the size of the upper mold cavities, wherein the central core (15) and the sliding core are located in the lower mold cavities.

7. The automatic demoulding structure of a multi-cavity command box mold according to claim 6 is characterized in that The upper cavity and the lower cavity constitute a cavity, wherein the cavity has 4 cavities, 6 cavities or 8 cavities.

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