In-mold injection mold

Abstract

The utility model discloses an in-mold injection mold which comprises a U-shaped supporting frame, two sliding rods are fixedly installed at the two ends of the U-shaped supporting frame, an upper mold and a lower mold are arranged on the U-shaped supporting frame, and one side of the upper mold and one side of the lower mold are fixedly connected with a first long toothed bar and a second long toothed bar respectively. The first long toothed bar and the second long toothed bar are symmetrically arranged, a circular gear is rotationally installed on the inner wall of the U-shaped supporting frame, the circular gear is arranged at the position between the first long toothed bar and the second long toothed bar and engaged with the first long toothed bar and the second long toothed bar, and two supporting rods are fixedly installed at the lower end of the U-shaped supporting frame; the two supporting rods penetrate through the lower surface of the lower mold in a sliding mode and are fixedly connected with a top plate. According to the utility model, the upper mold and the lower mold move relatively by moving the upper mold, so that a product in the mold can be conveniently ejected by the ejection plate.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of injection molds, in particular to an in-mold injection mold. Background Art

[0002] Injection mold is a common manufacturing tool, mainly used to manufacture plastic injection molded products. It consists of high-precision molds and mold holders, and is used to manufacture plastic products of various shapes and sizes. In the injection molding process, the mold is injected with molten plastic, which is then solidified and formed into the desired plastic product through a cooling process.

[0003] After the injection molding is completed, the product in the existing injection mold will adhere to the inner wall of the mold. When demoulding, it is troublesome to take the product out of the mold, which is time-consuming and laborious. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes an in-mold injection mold.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An in-mold injection mold comprises a U-shaped support frame, two sliding rods are fixedly installed at both ends of the U-shaped support frame, an upper mold and a lower mold are provided on the U-shaped support frame, and one side of the upper mold and the lower mold are respectively fixedly connected with a first long tooth rod and a second long tooth rod, the first long tooth rod and the second long tooth rod are symmetrically arranged with each other, a circular gear is rotatably installed on the inner wall of the U-shaped support frame, the circular gear is arranged at a position between the first long tooth rod and the second long tooth rod and respectively meshes with the first long tooth rod and the second long tooth rod, and two support rods are fixedly installed at the lower end of the U-shaped support frame, the two support rods slide through the lower surface of the lower mold and are fixedly connected with a top plate.

[0007] As a further description of the above technical solution, a second elongated groove is provided on the lower surface of the inner wall of the lower mold, and the top plate is slidably installed in the second elongated groove. An air hole is provided in the second elongated groove, and the air hole is connected to the lower end of the lower mold. An air blocking block is fixedly installed above the air hole at the lower end of the top plate, and the air blocking block is slidably connected to the air hole.

[0008] As a further description of the above technical solution, a first elongated groove is opened on the inner wall of the upper end of the upper mold, a pressure plate is slidably installed in the first elongated groove, a first screw rod is rotatably installed between the upper end of the upper mold and the U-shaped support frame, one end of the first screw rod passes through the outer surface of the upper mold and is threadedly connected to the pressure plate, one end of the first screw rod passes through the outer surface of the U-shaped support frame and is fixedly connected to a rocker wheel.

[0009] As a further description of the above technical solution, two first fixed blocks are fixedly connected at both ends of the upper mold, and two second fixed blocks are fixedly connected at both ends of the lower mold. The two sliding rods respectively penetrate the outer surfaces of the two first fixed blocks and the two second fixed blocks and are slidably connected to them.

[0010] As a further description of the above technical solution, an annular clamping block is fixedly installed on the lower end of the upper mold, an annular clamping groove is opened on the upper surface of the lower mold, the annular clamping block is slidably installed in the annular clamping groove, and an injection port is fixedly installed on the upper end of the upper mold.

[0011] As a further description of the above technical solution, two limit grooves are respectively opened on the inner walls on both sides of the annular groove, and two limit plates are fixedly installed on both sides of the lower end of the upper mold, and the two limit plates are respectively slidably installed in the two limit grooves.

[0012] As a further description of the above technical solution, a partition is slidably installed on one side of the inner wall of the upper mold, and a second screw rod is rotatably installed on one side of the partition rod. One end of the second screw rod passes through one side of the outer surface of the upper mold and is threadedly connected thereto, and one end of the second screw rod is fixedly connected to a knob.

[0013] As a further description of the above technical solution, the lower end of the partition extends to the lower surface of the inner wall of the lower mold, and the outer surface of the upper mold is provided with a scale groove corresponding to the partition.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. In the utility model, by moving the upper mold, the upper mold and the lower mold are relatively moved, so that the top plate can be pushed out of the product in the mold, so that the product can be taken out from the mold more conveniently.

[0016] 2. In the utility model, the second screw is driven to rotate by adjusting the knob, so that the partition moves in the upper mold and the lower mold, which is convenient for injection molding products of different widths. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 2 It is a structural schematic diagram of one side of the upper mold and the lower mold of the utility model;

[0019] Figure 3 It is a schematic diagram of the internal structure of the upper mold of the utility model;

[0020] Figure 4 It is a schematic diagram of the internal structure of the lower mold of the utility model;

[0021] Figure 5 It is a structural schematic diagram of the lower end of the top plate of the utility model.

[0022] Reference numerals: 10, U-shaped support frame; 11, slide bar; 12, circular gear;

[0023] 20, upper mold; 201, scale groove; 202, first long groove; 203, annular clamping block; 204, injection port; 21, first fixed block; 22, first long tooth rod; 23, limit plate; 24, pressure plate; 25, first screw rod; 26, rocker; 27, partition; 28, second screw rod; 29, knob;

[0024] 30. Lower mold; 301. Second elongated groove; 302. Air vent; 303. Annular groove; 304. Limiting groove; 31. Second fixing block; 32. Second long tooth rod; 33. Support rod; 34. Top plate; 341. Air blocking block. DETAILED DESCRIPTION

[0025] In order to facilitate the understanding of the present invention, the present invention will be described in more detail below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings, but the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the content disclosed in the present invention more thorough and comprehensive.

[0026] Please refer to the attached Figure 1-Figure 5 As shown, the utility model provides a technical solution: an in-mold injection mold, including a U-shaped support frame 10, two sliding rods 11 are fixedly installed at both ends of the U-shaped support frame 10, an upper mold 20 and a lower mold 30 are arranged on the U-shaped support frame 10, and the upper mold 20 and one side of the lower mold 30 are respectively fixedly connected with a first long tooth rod 22 and a second long tooth rod 32, the first long tooth rod 22 and the second long tooth rod 32 are symmetrically arranged, and a circular gear 12 is rotatably installed on the inner wall of the U-shaped support frame 10, the circular gear 12 is arranged at a position between the first long tooth rod 22 and the second long tooth rod 32 and meshes with the first long tooth rod 22 and the second long tooth rod 32 respectively, and two support rods 33 are fixedly installed at the lower end of the U-shaped support frame 10, the two support rods 33 slide through the lower surface of the lower mold 30 and are fixedly connected with a top plate 34, when the lower mold 30 descends, the position of the top plate 34 does not move, thereby ejecting the product in the mold.

[0027] In this embodiment, a second elongated groove 301 is provided on the lower surface of the inner wall of the lower mold 30, and the top plate 34 is slidably installed in the second elongated groove 301. An air hole 302 is provided in the second elongated groove 301, and the air hole 302 is connected to the lower end of the lower mold 30. An air blocking block 341 is fixedly installed above the air hole 302 at the lower end of the top plate 34, and the air blocking block 341 is slidably connected to the air hole 302. When the lower mold 30 descends, the top plate 34 is separated from the second elongated groove 301, and the air blocking block 341 is separated from the air hole 302, so that the air at the lower end of the lower mold 30 enters the lower end of the inner wall of the lower mold 30, so that the air pressure at the lower end of the inner wall of the lower mold 30 is the same as that of the outer side of the lower mold 30, thereby increasing the separation speed of the lower mold 30 and the product.

[0028] In this embodiment, a first elongated groove 202 is opened on the inner wall of the upper end of the upper mold 20, and a pressure plate 24 is slidably installed in the first elongated groove 202. A first screw rod 25 is rotatably installed between the upper end of the upper mold 20 and the U-shaped support frame 10. One end of the first screw rod 25 passes through the outer surface of the upper mold 20 and is threadedly connected thereto, and one end of the first screw rod 25 is rotatably connected to the pressure plate 24, and the other end of the first screw rod 25 passes through the outer surface of the U-shaped support frame 10 and is fixedly connected to a rocker 26.

[0029] Specifically, after the injection molding is completed and the product is cooled and formed, the first screw 25 is driven to rotate by rotating the crank 26, so that the upper mold 20 moves up on the first screw 25, and under the transmission of the first long tooth rod 22, the second long tooth rod 32 and the circular gear 12, the lower mold 30 moves vertically downward on the two support rods 33 at the same time, the top plate 34 is separated from the second elongated groove 301, and the air blocking block 341 is separated from the air vent 302, so that the air at the lower end of the lower mold 30 enters the lower end of the inner wall of the lower mold 30, so that the top plate 34 quickly ejects the lower mold 30 and the product in the upper mold 20.

[0030] In this embodiment, two first fixed blocks 21 are fixedly connected at both ends of the upper mold 20, and two second fixed blocks 31 are fixedly connected at both ends of the lower mold 30. Two sliding rods 11 respectively penetrate the outer surfaces of the two first fixed blocks 21 and the two second fixed blocks 31 and are slidably connected with them to prevent the upper mold 20 from shifting when rising or falling as the first screw rod 25 rotates.

[0031] In this embodiment, an annular clamping block 203 is fixedly installed at the lower end of the upper mold 20, an annular clamping groove 303 is opened on the upper surface of the lower mold 30, and the annular clamping block 203 is slidably installed in the annular clamping groove 303. An injection port 204 is fixedly installed at the upper end of the upper mold 20, and the annular clamping block 203 is slidably engaged in the annular clamping groove 303, thereby increasing the sealing performance of the closure of the upper mold 20 and the lower mold 30.

[0032] In this embodiment, two limit grooves 304 are respectively provided on the inner walls on both sides of the annular groove 303, and two limit plates 23 are fixedly installed on both sides of the lower end of the upper mold 20. The two limit plates 23 are respectively slidably installed in the two limit grooves 304 to limit the upper mold 20 and the lower mold 30.

[0033] In this embodiment, a partition 27 is slidably installed on one side of the inner wall of the upper mold 20, and a second screw rod 28 is rotatably installed on one side of the partition 27. One end of the second screw rod 28 passes through one side of the outer surface of the upper mold 20 and is threadedly connected to it, and one end of the second screw rod 28 is fixedly connected to a knob 29.

[0034] The second screw rod 28 is driven to rotate by adjusting the knob 29, so that the partition plate 27 moves in the upper mold 20 and the lower mold 30, so as to facilitate the injection molding of products with different widths.

[0035] In this embodiment, the lower end of the partition 27 extends to the lower surface of the inner wall of the lower mold 30, and the outer surface of the upper mold 20 is provided with a scale groove 201 corresponding to the partition 27, so as to facilitate the adjustment of the width of the injection molded product.

[0036] The above description of the utility model in combination with the accompanying drawings is an exemplary description. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as the non-substantial improvements are made by adopting the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. An in-mold injection mold, comprising a U-shaped support frame (10), characterized in that: Two sliding rods (11) are fixedly installed at both ends of the U-shaped support frame (10), and an upper mold (20) and a lower mold (30) are provided on the U-shaped support frame (10). One side of the upper mold (20) and the lower mold (30) are respectively fixedly connected with a first long tooth rod (22) and a second long tooth rod (32), and the first long tooth rod (22) and the second long tooth rod (32) are symmetrically arranged with each other. A circular gear (12) is rotatably installed on the inner wall of the U-shaped support frame (10), and the circular gear (12) is arranged at a position between the first long tooth rod (22) and the second long tooth rod (32) and meshes with the first long tooth rod (22) and the second long tooth rod (32) respectively. Two support rods (33) are fixedly installed at the lower end of the U-shaped support frame (10), and the two support rods (33) slide through the lower surface of the lower mold (30) and are fixedly connected with a top plate (34).

2. The in-mold injection mold according to claim 1, characterized in that: A second elongated groove (301) is provided on the lower surface of the inner wall of the lower mold (30), and the top plate (34) is slidably installed in the second elongated groove (301). An air hole (302) is provided in the second elongated groove (301), and the air hole (302) is connected to the lower end of the lower mold (30). An air blocking block (341) is fixedly installed above the air hole (302) at the lower end of the top plate (34), and the air blocking block (341) is slidably connected to the air hole (302).

3. The in-mold injection mold according to claim 1, characterized in that: A first elongated groove (202) is provided on the inner wall of the upper end of the upper mold (20), a pressing plate (24) is slidably installed in the first elongated groove (202), a first screw rod (25) is rotatably installed between the upper end of the upper mold (20) and the U-shaped support frame (10), one end of the first screw rod (25) passes through the outer surface of the upper mold (20) and is threadedly connected thereto, one end of the first screw rod (25) is rotatably connected to the pressing plate (24), and the other end of the first screw rod (25) passes through the outer surface of the U-shaped support frame (10) and is fixedly connected to a rocker (26).

4. The in-mold injection mold according to claim 1, characterized in that: Two first fixed blocks (21) are fixedly connected to the two ends of the upper mold (20), and two second fixed blocks (31) are fixedly connected to the two ends of the lower mold (30). The two sliding rods (11) respectively penetrate the outer surfaces of the two first fixed blocks (21) and the two second fixed blocks (31) and are slidably connected to them.

5. The in-mold injection mold according to claim 1, characterized in that: An annular clamping block (203) is fixedly mounted on the lower end of the upper mold (20), an annular clamping groove (303) is provided on the upper surface of the lower mold (30), the annular clamping block (203) is slidably mounted in the annular clamping groove (303), and an injection port (204) is fixedly mounted on the upper end of the upper mold (20).

6. The in-mold injection mold according to claim 5, characterized in that: Two limiting grooves (304) are respectively provided on the inner walls on both sides of the annular groove (303); two limiting plates (23) are respectively fixedly installed on both sides of the lower end of the upper mold (20); and the two limiting plates (23) are respectively slidably installed in the two limiting grooves (304).

7. The in-mold injection mold according to claim 1, characterized in that: A partition (27) is slidably mounted on one side of the inner wall of the upper mold (20), and a second screw rod (28) is rotatably mounted on one side of the partition plate (27). One end of the second screw rod (28) passes through an outer surface of one side of the upper mold (20) and is threadedly connected thereto, and one end of the second screw rod (28) is fixedly connected to a knob (29).

8. The in-mold injection mold according to claim 7, characterized in that: The lower end of the partition (27) extends to the lower surface of the inner wall of the lower mold (30), and the outer surface of the upper mold (20) is provided with a scale groove (201) corresponding to the partition (27).

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