Double-lock demolding mold

Abstract

The utility model particularly relates to a double-lock demolding mold which comprises a mold body, a separation top plate is arranged at the top end of the mold body, an inner mold plate, a demolding device and a lifting piece are arranged in the mold body, a demolding push rod and a demolding push block are arranged on the demolding device, and the demolding push rod and the demolding push block penetrate through the inner mold plate and the lifting piece to be connected with the demolding device. The outer edge of the lifting part is provided with a convex block, a guide groove and a limiting groove are further formed in the mold body, a moving part is arranged in the guide groove, the moving part is provided with a concave position, one end of the convex block is arranged in the limiting groove and the concave position respectively, the lifting part is further hinged to a pushing hinge arm, a positioning block is further arranged on the mold body, a positioning groove is formed in the positioning block, and one end of the hinge arm is arranged in the positioning groove. Compared with the prior art, the plastic part demoulding device has the beneficial effects that the demoulding push rod on the demoulding device is used for applying a thrust force to a plastic part, at the moment, the demoulding push block pushes out a bent part of the plastic part, and the plastic part and the bent part are separated from the inner template together, so that the demoulding efficiency is improved.

Description

Technical Field

[0001] The utility model specifically relates to a double-lock demoulding mould. Background Art

[0002] With the rapid development of the plastics industry and the continuous improvement of engineering plastics and plastics in strength and precision, the application scope of plastic products is getting wider and wider, such as: household appliances, construction equipment, instruments and meters, automobile industry and many other fields, and the proportion of plastic products is also increasing rapidly. In industrial products, a well-designed plastic part can often replace multiple traditional metal structural parts. In addition, due to the unique properties of engineering plastics, very complex shapes can be formed at one time, and they can also be designed into a card-mounted structure, which reduces the fasteners in the entire product by multiples, thus significantly reducing the consumption of metal materials and the processing and assembly time.

[0003] Injection molded products need to be made into curved parts. The curved parts are easily stuck in the injection mold during the one-time demoulding method, resulting in low demoulding efficiency. Summary of the invention

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a double-lock demoulding mold that improves demoulding efficiency and avoids damage to plastic parts.

[0005] According to the double-lock demolding mold of the utility model, it includes a mold body, a separation top plate is provided at the top of the mold body, an inner template, a demolding device and a lifting member are provided in the mold body, a demolding push rod and a demolding push block are provided on the demolding device, the demolding push rod and the demolding push block pass through the inner template, the lifting member is connected to the demolding device, a protrusion is provided on the outer edge of the lifting member, a guide groove and a limit groove are also provided in the mold body, a moving member is provided in the guide groove, the moving member is provided with a recess, one end of the protrusion is respectively placed in the limit groove and the recess, the lifting member is also hinged with a pushing hinge arm, a positioning block is also provided on the mold body, a positioning groove is provided in the positioning block, and one end of the hinge arm is placed in the positioning groove.

[0006] Specifically, the demoulding device includes an inner upper plate, an inner lower plate, a guide column and a spring. The inner template is installed on the inner upper plate, the spring is sleeved on the guide column, one end of the guide column is fixed to the inner lower plate, the other end of the guide column and the spring passes through the inner upper plate and the other end of the guide column is installed on the inner template, the demoulding push rod and the demoulding push block are respectively located on the upper surface of the inner lower plate, and a push rod is provided on the bottom surface of the inner lower plate.

[0007] Specifically, the lifting member and the inner lower plate are connected by screws.

[0008] Specifically, the lifting member and the protrusion are connected via a spring.

[0009] Specifically, the protrusions are respectively provided with a first protrusion and a second protrusion, the moving part is divided into a front moving part and a rear moving part, the limiting groove is divided into a first limiting groove and a second limiting groove, the front moving part and the rear moving part are located on both sides of the mold body, the concave position is divided into a front concave position and a rear concave position, the front concave position is located on the surface of the front moving part, and the rear concave position is located on the surface of the rear moving part, the first protrusion is placed in the front concave position, and the second protrusion is placed in the rear concave position.

[0010] Specifically, the mold body is further provided with a front guide member and a rear guide member, the guide groove is divided into a front guide groove and a rear guide groove, the front guide groove is located on the front guide member, the rear guide groove is located on the rear guide member, the front moving member is placed in the front guide groove, the rear moving member is placed in the rear guide groove, the second limit groove is located on the rear guide member, and the first limit groove is located on the front guide member.

[0011] Specifically, the second protrusion is placed in the second limiting groove.

[0012] Specifically, the first protrusion is placed in the first limiting groove.

[0013] Specifically, the positioning block is divided into a left positioning block and a right positioning block, the positioning slot is divided into a left positioning slot and a right positioning slot, the left positioning slot is located on the left positioning block, and the right positioning slot is located on the positioning block, and the hinge arm is divided into a first hinge arm and a second hinge arm, one end of the first hinge arm is placed in the left positioning slot, and one end of the second hinge arm is placed in the right positioning slot.

[0014] The beneficial effect of the utility model is that the structure applies a thrust to the plastic part through the demoulding push rod on the demoulding device, and when the plastic part is partially separated from the inner template, more space is reserved. At this time, the demoulding push block pushes the bent part of the plastic part again, and the plastic part and the bent part are separated from the inner template together, thereby improving the demoulding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings.

[0016] Figure 1 It is a structural diagram of the utility model.

[0017] Figure 2 It is another structural schematic diagram of the utility model from another angle.

[0018] Figure 3 It is a schematic diagram of the structure of the utility model in a disassembled state.

[0019] Figure 4 It is a schematic diagram of the internal structure of the utility model.

[0020] Figure 5 It is a cross-sectional structural schematic diagram of the utility model.

[0021] Figure 6 It is another cross-sectional structural schematic diagram of the utility model.

[0022] Figure 7 It is a structural schematic diagram of the connection state of the front guide member, the front moving member and the first protrusion.

[0023] Figure 8 It is a structural schematic diagram of the connection state of the rear moving member, the rear guide member and the second protrusion.

[0024] The markings shown in the figure are as follows:

[0025] Mold body 1, separation top plate 101, left positioning block 2, left positioning groove 201, right positioning block 3, right positioning groove 301, front guide member 4, front guide groove 401, first limiting groove 402, rear guide member 5, rear guide groove 501, second limiting groove 502, front moving member 6, front recess 601, rear moving member 7, rear recess 701, lifting member 8, first protrusion 801, second protrusion 802, accessories 9, inner lower plate 10, push rod 1001, inner upper plate 11, guide column 12, spring 13, inner template 14, first hinge arm 15, second hinge arm 16, demoulding push rod 17, demoulding push block 18. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0027] Reference below Figures 1 to 8 Description: A double-lock demolding mold according to an embodiment of the utility model includes a mold body 1, a separation top plate 101 is provided at the top of the mold body 1, an inner template 14, a demolding device and a lifting member 8 are provided inside the mold body 1, a demolding push rod 17 and a demolding push block 18 are provided on the demolding device, the demolding push rod 17 and the demolding push block 18 pass through the inner template 14, the lifting member 8 is connected to the demolding device, a protrusion is provided on the outer edge of the lifting member 8, a guide groove and a limit groove are also provided in the mold body 1, a moving member is provided in the guide groove, the moving member is provided with a recess, one end of the protrusion is respectively placed in the limit groove and the recess, the lifting member 8 is also hinged with a pushing hinge arm, a positioning block is also provided on the mold body 1, a positioning groove is provided in the positioning block, and one end of the hinge arm is placed in the positioning groove.

[0028] This structure applies a thrust to the plastic part through the demoulding push rod 17 on the demoulding device. When the plastic part partially separates from the inner template 14, more space is reserved. At this time, the demoulding push block 18 pushes the bent part of the plastic part again, and the plastic part and the bent part separate from the inner template 14 together, thereby improving the demoulding efficiency.

[0029] More specifically: the mold body 1 is installed on the injection molding equipment, and a cylinder is fixed on the injection molding equipment. The cylinder is connected to the demoulding device, that is, the cylinder is connected to the bottom surface of the demoulding device to push the demoulding device to move. The injection molding equipment also has an injection device to hot-melt the plastic raw material and extend it into the inner template 14 in the mold body 1 for injection. The plastic slurry is cooled in the inner template 14, and after cooling, a plastic part is formed.

[0030] At this time, the cylinder is required to push the demoulding device to move, and the demoulding device pushes the demoulding push rod 17 and the demoulding push block 18 to move together. One end of the demoulding push rod 17 first contacts the plastic part and separates the plastic part from the inner template 14. The distance between the plastic part and the inner template 14 is 5mm to 8mm. More space is reserved between the plastic part and the inner template 14, that is, space reserved for the bending part of the plastic part to separate. The demoulding push block 18 pushes the bending part on the plastic part away from the inner template 14 to implement the secondary demoulding process, wherein the outer edge of the lifting member 8 The edge is provided with a protrusion, corresponding to the concave position of the moving part, one end of the protrusion is respectively placed in the limit groove and the concave position, which is used to limit the speed of the demoulding device stroke, and when resetting, the demoulding device is pushed back to the limit groove under the push of the cylinder, and the protrusion is re-placed in the limit groove; the limit groove is trapezoidal, the protrusion is shifted along the limit groove, and finally the protrusion is separated from the limit groove; when separating, the moving part continues to be pushed upward, and the moving part moves along the guide groove until the moving part is separated from the range of the guide groove, and the guide groove has a limited moving range of the moving part. During the rising process of the moving part, it moves up together with the demoulding device and the lifting part 8 until one end of the hinge arm is placed on the top of the positioning groove. Because the hinge arm is hinged on the lifting part, when the top of the positioning groove squeezes one end of the hinge arm, a lever principle is formed, so that the other end of the hinge arm pushes the demoulding device to rise for the second time, and the second demoulding process is implemented.

[0031] The specific structure of the demoulding device described in this structure is as follows: the demoulding device includes an inner upper plate 11, an inner lower plate 10, a guide column 12 and a spring 13, an inner template 14 is installed on the inner upper plate 11, the spring 13 is sleeved on the guide column 12, one end of the guide column 12 is fixed on the inner lower plate 10, the other ends of the guide column 12 and the spring 13 pass through the inner upper plate 11 and the other end of the guide column 12 is installed on the inner template 14, a demoulding push rod 17 and a demoulding push block 18 are respectively located on the upper surface of the inner lower plate 10, and a push rod 1001 is provided on the bottom surface of the inner lower plate 10. The guide column 12 helps to implement the guiding function. Under the push of the cylinder, the inner lower plate 10 approaches the inner upper plate 11, and the inner lower plate 10 pushes the demoulding push rod 17 and the demoulding push block 18 to squeeze the plastic parts on the inner template 14. The spring 13 is used for resetting. When the cylinder pushes the inner lower plate 10 to reset, the spring 13 also applies force to the inner lower plate 10. Four guide columns 12 are preferably used in conjunction with this structure to make the inner lower plate 10 shift at a uniform speed.

[0032] The lifting member 8 and the inner lower plate 10 of the present structure are connected by screws, so that the lifting member 8 and the inner lower plate 10 can move synchronously. The lifting member 8 and the protrusion of the present structure are connected by a spring, so that the position of the protrusion can be adjusted under the action of the spring.

[0033] The described projection of this structure is respectively provided with the first projection 801 and the second projection 802, moving member is divided into the front moving member 6 and the rear moving member 7, the limiting groove is divided into the first limiting groove 402 and the second limiting groove 502, the front moving member 6 and the rear moving member 7 are positioned at the both sides of the mold body 1, the concave position is divided into the front concave position 601 and the rear concave position 701, the front concave position 601 is positioned at the surface of the front moving member 6, the rear concave position 701 is positioned at the surface of the rear moving member 7, the first projection 801 places in the front concave position 601, and the second projection 802 places in the rear concave position 701. The first projection 801 and the second projection 802 place respectively on the front moving member 6 and the rear moving member 7, and utilize lifting member 8 to drive the first projection 801 and the second projection 802 to move up and down synchronously. The first projection 801 and the second projection 802 are respectively positioned at the both sides of lifting member 8.

[0034] The mold body 1 of the present structure is further provided with a front guide member 4 and a rear guide member 5, the guide grooves are divided into a front guide groove 401 and a rear guide groove 501, the front guide groove 401 is located on the front guide member 4, the rear guide groove 501 is located on the rear guide member 5, the front moving member 6 is placed in the front guide groove 401, the rear moving member 7 is placed in the rear guide groove 501, the second limiting groove 502 is located on the rear guide member 5, and the first limiting groove 402 is located on the front guide member 4. The front guide member 4 and the rear guide member 5 are symmetrically distributed.

[0035] The second protrusion 802 of this structure is placed in the second limiting groove 502. The first protrusion 801 of this structure is placed in the first limiting groove 402. The positioning blocks of this structure are divided into left positioning blocks 2 and right positioning blocks 3, and the positioning grooves are divided into left positioning grooves 201 and right positioning grooves 301. The left positioning groove 201 is located on the left positioning block 2, and the right positioning groove 301 is located on the positioning block 3. The hinge arm is divided into a first hinge arm 15 and a second hinge arm 16. One end of the first hinge arm 15 is placed in the left positioning groove 201, and one end of the second hinge arm 16 is placed in the right positioning groove 301. The first hinge arm 15 and the second hinge arm 16 are symmetrically distributed, and the first hinge arm 15 and the second hinge arm 16 act on the lifting member 8 at the same time, and the lifting member 8 is further displaced.

[0036] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A double-lock demoulding mold, comprising a mold body (1), wherein a separation top plate (101) is provided at the top of the mold body (1), and characterized in that: An inner mold plate (14), a demoulding device and a lifting member (8) are provided in the mold body (1). A demoulding push rod (17) and a demoulding push block (18) are provided on the demoulding device. The demoulding push rod (17) and the demoulding push block (18) pass through the inner mold plate (14). The lifting member (8) is connected to the demoulding device. A convex block is provided on the outer edge of the lifting member (8). A guide groove and a limit groove are also provided in the mold body (1). A moving member is provided in the guide groove. The moving member is provided with a concave position. One end of the convex block is respectively placed in the limit groove and the concave position. The lifting member (8) is also hingedly connected with a pushing hinge arm. A positioning block is also provided on the mold body (1). A positioning groove is provided in the positioning block. One end of the hinge arm is placed in the positioning groove.

2. The double-lock demoulding mold according to claim 1, characterized in that: The demoulding device comprises an inner upper plate (11), an inner lower plate (10), a guide column (12) and a spring (13); an inner template (14) is mounted on the inner upper plate (11); the spring (13) is sleeved on the guide column (12); one end of the guide column (12) is fixed on the inner lower plate (10); the other ends of the guide column (12) and the spring (13) pass through the inner upper plate (11); and the other end of the guide column (12) is mounted on the inner template (14); a demoulding push rod (17) and a demoulding push block (18) are respectively located on the upper surface of the inner lower plate (10); and a push rod (1001) is provided on the bottom surface of the inner lower plate (10).

3. The double-lock demoulding mold according to claim 2, characterized in that: The lifting member (8) and the inner lower plate (10) are connected via screws.

4. The double-lock demoulding mold according to claim 1, characterized in that: The lifting member (8) is connected to the protrusion via a spring.

5. The double-lock demoulding mold according to claim 1, characterized in that: The protrusions are respectively provided with a first protrusion (801) and a second protrusion (802); the moving member is divided into a front moving member (6) and a rear moving member (7); the limiting groove is divided into a first limiting groove (402) and a second limiting groove (502); the front moving member (6) and the rear moving member (7) are located on both sides of the mold body (1); the concave position is divided into a front concave position (601) and a rear concave position (701); the front concave position (601) is located on the surface of the front moving member (6); the rear concave position (701) is located on the surface of the rear moving member (7); the first protrusion (801) is arranged in the front concave position (601); and the second protrusion (802) is arranged in the rear concave position (701).

6. The double-lock demoulding mold according to claim 5, characterized in that: The mold body (1) is further provided with a front guide member (4) and a rear guide member (5), the guide groove is divided into a front guide groove (401) and a rear guide groove (501), the front guide groove (401) is located on the front guide member (4), the rear guide groove (501) is located on the rear guide member (5), the front moving member (6) is arranged in the front guide groove (401), the rear moving member (7) is arranged in the rear guide groove (501), the second limiting groove (502) is located on the rear guide member (5), and the first limiting groove (402) is located on the front guide member (4).

7. The double-lock demoulding mold according to claim 6, characterized in that: The second protrusion (802) is placed in the second limiting groove (502).

8. The double-lock demoulding mold according to claim 6, characterized in that: The first protrusion (801) is placed in the first limiting groove (402).

9. The double-lock demoulding mold according to claim 1, characterized in that: The positioning block is divided into a left positioning block (2) and a right positioning block (3); the positioning groove is divided into a left positioning groove (201) and a right positioning groove (301); the left positioning groove (201) is located on the left positioning block (2); the right positioning groove (301) is located on the positioning block (3); the hinge arm is divided into a first hinge arm (15) and a second hinge arm (16); one end of the first hinge arm (15) is placed in the left positioning groove (201); and one end of the second hinge arm (16) is placed in the right positioning groove (301).

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