Injection mold convenient for stripping

Abstract

The utility model relates to the technical field of injection molds, and discloses an injection mold convenient for stripping, which comprises a mounting rack, a plurality of guide rods are fixedly connected to the inner side of the mounting rack, a mold I and a mold II are arranged in the mounting rack, the guide rods respectively penetrate through the side walls of the mold I and the mold II, and the guide rods are fixedly connected with the mounting rack. The guide rods are slidably connected with the first mold and the second mold correspondingly, first hydraulic cylinders are fixed to the two side walls of the mounting frame correspondingly, the telescopic ends of the two first hydraulic cylinders are fixed to the side walls of the first mold and the second mold correspondingly, a storage box is fixed to the side wall of the mounting frame, and a liquid inlet pipe is arranged at the bottom of the storage box in a communicating mode; and a spraying assembly is arranged on the mounting frame. When the device provided by the utility model is applied, a release agent can be ensured to fully and uniformly cover the surface of a mold, local omission is avoided, the smoothness of the demolding process is improved, the quality of a plastic product is ensured, the waste of the release agent is avoided, the requirement of manual operation is reduced, and the labor intensity is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an injection mold which is convenient for removing materials. Background Art

[0002] An injection mold is a professional tool used to produce plastic products. It is mainly used in the injection molding process. It injects molten plastic material into the mold cavity under high pressure, then cools and solidifies it to eventually form a plastic product with a certain shape and size. The design and production of injection molds are very precise to ensure that the plastic products produced have a high degree of consistency and good surface quality.

[0003] In the existing injection mold processing process, in order to ensure that the plastic product can be demolded smoothly, a layer of mold release agent is usually pre-coated on the mold surface to reduce the friction resistance between the mold surface and the plastic melt. This pretreatment step is crucial to maintaining the integrity and surface quality of the product and improving production efficiency. However, the current manual spraying of mold release agents has many limitations and shortcomings. First, it is often difficult to achieve uniform coverage of the mold surface when manually spraying the mold release agent, which may cause the mold release agent to be uncovered in some areas, thereby generating higher friction during the demolding process and increasing the difficulty of demolding. This may cause the plastic product to deform during the demolding process and affect the quality of the product. Secondly, during the manual operation process, due to the lack of precise control means, the mold release agent is often sprayed to areas beyond the mold surface, such as the non-working surface of the mold or the environment around the mold. This overspraying not only causes a waste of mold release agent materials and increases production costs, but also may cause pollution to the operating environment. Finally, manual spraying of mold release agents not only increases the labor intensity of workers, but also limits the improvement of production efficiency, especially in large-scale continuous production environments, reducing the efficiency of demolding.

[0004] Therefore, it is necessary to design an injection mold that is easy to remove the material to solve the above problems. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes an injection mold which is convenient for removing materials.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A plastic injection mold for easy material removal comprises a mounting frame, a plurality of guide rods are fixedly connected to the inner side of the mounting frame, a mold 1 and a mold 2 are arranged inside the mounting frame, the guide rods respectively penetrate the side walls of the mold 1 and the mold 2, and the guide rods are respectively slidably connected to the mold 1 and the mold 2, hydraulic cylinder 1 is fixed to both side walls of the mounting frame, the telescopic ends of the two hydraulic cylinders 1 are respectively fixed to the side walls of the mold 1 and the mold 2, a storage box is fixed to the side wall of the mounting frame, a liquid inlet pipe is connected to the bottom of the storage box, a hydraulic cylinder 3 is installed on the storage box, a slide plate is sealingly and slidably connected to the interior of the storage box, the telescopic end of the hydraulic cylinder 3 is fixed to the upper surface of the slide plate, and a spray assembly is arranged on the mounting frame.

[0008] As a preferred technical solution of the utility model, the spray assembly includes a hydraulic cylinder 2 fixedly connected to a mounting frame, a connecting frame is fixed to the telescopic end of the hydraulic cylinder 2, a matching cover and a matching block are provided in the mounting frame, the matching cover is adapted to the mold 2, the matching block is adapted to the mold 1, the matching cover and the matching block are both fixed to the bottom end of the connecting frame, a cavity is provided between the matching cover, the matching block and the connecting frame, a plurality of telescopic tubes are provided on the outer side of the matching block and the inner side of the matching cover, the telescopic tubes are connected to the inside of the cavity, the cavity is connected to the liquid inlet pipe, and an atomizing nozzle is provided on the telescopic tube.

[0009] As a preferred technical solution of the utility model, a swing component is also provided on the mounting frame, and the swing component is used to drive the telescopic tube to swing. The swing component includes an airbag fixedly connected to the upper surface of the slide plate, and the top of the airbag is fixed to the inner top surface of the storage box. Several groups of fixing parts are fixed on the inner side of the matching cover and the outer side of the matching block. The fixing parts are composed of four fixing blocks, and the four fixing blocks are arranged at equal intervals in the circumferential direction around the telescopic tube. Four extrusion blocks are fixed on the telescopic tube, and the four extrusion blocks are distributed in a three-dimensional spiral shape, and the four extrusion blocks correspond to the four fixed blocks respectively. The interior of the telescopic tube wall is hollow, and the interior of the telescopic tube wall is connected to a connecting pipe, and all the connecting pipes are connected to the airbag.

[0010] As a preferred technical solution of the utility model, the telescopic tube is made of rubber.

[0011] As a preferred technical solution of the utility model, all the telescopic tubes located on the same plane are arranged at equal intervals.

[0012] As a preferred technical solution of the utility model, the extrusion block is in a hemispherical structure, and the end of the fixing block is in a spherical structure.

[0013] The utility model has the following beneficial effects:

[0014] 1. Improve the uniformity of spraying: By using hydraulically driven equipment, ensure that the matching block and the matching cover can be accurately aligned and cover the key parts of the mold, so as to achieve uniform spraying of the release agent. This method is more accurate than manual spraying, and can ensure that the release agent fully covers the entire mold surface, avoids local omissions, improves the smoothness of the demoulding process, and ensures the quality of plastic products;

[0015] 2. Save release agent and reduce costs: The spray component can be used to spray the release agent accurately on the corresponding position of the mold, avoiding excessive waste of release agent, which not only reduces the cost of release agent, but also reduces the environmental load;

[0016] 3. Reduce the labor intensity of staff: By setting up the spray component, the need for manual operation is reduced, and the staff does not need to frequently perform heavy spraying operations, thereby reducing labor intensity, improving work comfort and safety, and also improving spraying efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of an injection mold that is easy to remove material, as proposed by the utility model;

[0018] Figure 2 Schematic diagram of the internal structure of the storage box;

[0019] Figure 3 It is a schematic diagram of the internal structure of the matching block and the matching cover;

[0020] Figure 4 for Figure 3 A magnified view of the structure at A.

[0021] In the figure: 1 mounting frame, 2 guide rod, 3 mold 1, 4 mold 2, 5 hydraulic cylinder 1, 6 hydraulic cylinder 2, 7 matching cover, 8 matching block, 9 connecting frame, 10 hydraulic cylinder 3, 11 storage box, 12 slide plate, 13 liquid inlet pipe, 14 cavity, 15 telescopic pipe, 16 atomizing nozzle, 17 connecting pipe, 18 extrusion block, 19 fixing block, 20 air bag. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] Reference Figure 1 and Figure 2, an injection mold for easy stripping, including a mounting frame 1, a plurality of guide rods 2 are fixedly connected to the inner side of the mounting frame 1, a mold 1 3 and a mold 2 4 are arranged inside the mounting frame 1, the guide rods 2 respectively penetrate the side walls of the mold 1 3 and the mold 2 4, and the guide rods 2 are respectively slidably connected to the mold 1 3 and the mold 2 4, hydraulic cylinders 1 5 are fixed to both side walls of the mounting frame 1, the telescopic ends of the two hydraulic cylinders 1 5 are respectively fixed to the side walls of the mold 1 3 and the mold 2 4, the guide rods 2 guide the movement of the mold 1 3 and the mold 2 4, so that the two molds can correspond to each other, a storage box 11 is fixed to the side wall of the mounting frame 1, and the storage box 11 contains A liquid inlet pipe 13 is provided at the bottom of the release agent storage box 11, a hydraulic cylinder three 10 is installed on the storage box 11, a slide plate 12 is sealingly and slidably connected to the storage box 11, and the telescopic end of the hydraulic cylinder three 10 is fixed to the upper surface of the slide plate 12. Furthermore, a branch pipe is provided on the storage box 11, and the branch pipe is connected to a spare release agent storage tank. Both the branch pipe and the liquid inlet pipe 13 are provided with a one-way valve, and the two one-way valves are in opposite directions, so that when the slide plate 12 moves downward, the release agent can be squeezed into the liquid inlet pipe 13. Conversely, when the slide plate 12 moves upward, new release agent can be added to the storage box 11, and a spray component is provided on the mounting frame 1.

[0024] Reference Figure 1 and Figure 2 The spray assembly includes a hydraulic cylinder 2 6 fixedly connected to the mounting frame 1, and a connecting frame 9 is fixed to the telescopic end of the hydraulic cylinder 2 6. The cross-section of the connecting frame 9 is an inverted T-shaped structure. A matching cover 7 and a matching block 8 are arranged in the mounting frame 1. The matching cover 7 is adapted to the mold 2 4, and the matching block 8 is adapted to the mold 1 3. The matching cover 7 can cover the mold convex surface on the mold 2 4, and the matching block 8 can be moved to the inside of the concave surface of the mold 1 3. The matching cover 7 and the matching block 8 are fixed to the bottom end of the connecting frame 9. A cavity 14 is commonly arranged between the matching cover 7, the matching block 8 and the connecting frame 9. A plurality of telescopic tubes 15 are arranged on the outer side of the matching block 8 and the inner side of the matching cover 7. The telescopic tubes 15 are made of rubber and can be deformed. The telescopic tubes 15 are connected to the inside of the cavity 14, and the cavity 14 is connected to the liquid inlet pipe 13. An atomizing nozzle 16 is connected to the telescopic tube 15. All the telescopic tubes 15 located on the same surface are arranged at equal intervals, which can improve the uniformity of spraying the release agent.

[0025] Reference Figure 2 and Figure 4The mounting frame 1 is also provided with a swinging assembly, which is used to drive the telescopic tube 15 to swing. The swinging assembly includes an air bag 20 fixedly connected to the upper surface of the slide plate 12. The top of the air bag 20 is fixed to the inner top surface of the storage box 11. Several groups of fixing parts are fixed to the inner side of the matching cover 7 and the outer side of the matching block 8. The fixing parts are composed of four fixing blocks 19, and the four fixing blocks 19 are arranged at equal intervals in the circumferential direction around the telescopic tube 15. Four extrusion blocks 18 are fixed on the telescopic tube 15, and the four extrusion blocks 18 are distributed in a three-dimensional spiral shape. The four extrusion blocks 18 correspond to the four fixed blocks 19 respectively. Specifically, the four extrusion blocks 18 are respectively located on the four surfaces of the telescopic tube 15, and the four extrusion blocks 18 are not located on the same vertical line. The interior of the tube wall of the telescopic tube 15 is hollow, and the interior of the tube wall of the telescopic tube 15 is connected to a connecting tube 17. All the connecting tubes 17 are connected to the airbag 20. The extrusion block 18 has a hemispherical structure, and the end of the fixed block 19 has a spherical structure, which can reduce the friction between the extrusion block 18 and the fixed block 19.

[0026] The specific working principle of the utility model is as follows:

[0027] When spraying the release agent, the staff starts the hydraulic cylinder 2 6 to move the connecting frame 9, the matching block 8 and the matching cover 7 downward, and the matching block 8 is opposite to the mold 1 3, and the matching cover 7 is opposite to the mold 2 4. Then, the two hydraulic cylinders 1 5 are started to move the mold 1 3 and the mold 2 4 toward each other, so that the matching block 8 can be located in the cavity on the mold 1 3, and the matching cover 7 can cover the convex block on the mold 2 4 that is adapted to the cavity. Then, the hydraulic cylinder 3 10 is started to move the slide plate 12 downward and squeeze the release agent in the storage box 11. The release agent enters the cavity 14 through the liquid inlet pipe 13, and then is sprayed out through the telescopic tube 15 and the atomizing nozzle 16, so as to evenly spray the injection molding area on the mold 1 3 and the mold 2 4. Compared with manual spraying, this method can improve the uniformity and sufficiency of the spraying of the release agent, improve the smoothness and speed of demoulding, and secondly, will not cause waste of the release agent, reduce the demoulding cost, and also reduce the labor intensity of the staff;

[0028] Furthermore, in the above process, when the slide plate 12 moves downward to extrude the release agent, the airbag 20 is in a negative pressure state, and the air in the telescopic tube 15 is sucked into the airbag 20. During the contraction of the telescopic tube 15, the four extrusion blocks 18 on the telescopic tube 15 contact the corresponding fixed blocks 19 in turn. Since the telescopic tube 15 is elastic, when the extrusion blocks 18 contact the fixed blocks 19, the telescopic tube 15 will tilt to one side. In this way, under the action of the four extrusion blocks 18 and the fixed blocks 19, the telescopic tube 15 will swing in different directions once, which can increase the spraying range of the atomizing nozzle 16 and further improve the uniformity of the spraying.

[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An injection mold for easy stripping, comprising a mounting frame (1), characterized in that: A plurality of guide rods (2) are fixedly connected to the inner side of the mounting frame (1), a mold 1 (3) and a mold 2 (4) are arranged inside the mounting frame (1), the guide rods (2) respectively penetrate the side walls of the mold 1 (3) and the mold 2 (4), and the guide rods (2) are respectively slidably connected to the mold 1 (3) and the mold 2 (4), a hydraulic cylinder 1 (5) is fixed to both side walls of the mounting frame (1), the telescopic ends of the two hydraulic cylinders 1 (5) are respectively fixed to the side walls of the mold 1 (3) and the mold 2 (4), a storage box (11) is fixed to the side wall of the mounting frame (1), a liquid inlet pipe (13) is connected to the bottom of the storage box (11), a hydraulic cylinder 3 (10) is installed on the storage box (11), a slide plate (12) is sealed and slidably connected inside the storage box (11), the telescopic end of the hydraulic cylinder 3 (10) is fixed to the upper surface of the slide plate (12), and a spray assembly is arranged on the mounting frame (1).

2. The injection mold for easy stripping according to claim 1, characterized in that: The spray assembly comprises a hydraulic cylinder 2 (6) fixedly connected to a mounting frame (1), a connecting frame (9) being fixed to the telescopic end of the hydraulic cylinder 2 (6), a matching cover (7) and a matching block (8) being arranged inside the mounting frame (1), the matching cover (7) being matched with the mold 2 (4), the matching block (8) being matched with the mold 1 (3), the matching cover (7) and the matching block (8) being fixed to the bottom end of the connecting frame (9), a cavity (14) being arranged between the matching cover (7), the matching block (8) and the connecting frame (9), a plurality of telescopic tubes (15) being arranged on the outer side of the matching block (8) and the inner side of the matching cover (7), the telescopic tubes (15) being connected with the inside of the cavity (14), the cavity (14) being connected with the liquid inlet pipe (13), and an atomizing nozzle (16) being arranged on the telescopic tube (15).

3. The injection mold for easy stripping according to claim 2, characterized in that: The mounting frame (1) is also provided with a swinging assembly, which is used to drive the telescopic tube (15) to swing. The swinging assembly includes an air bag (20) fixedly connected to the upper surface of the slide plate (12), the top of the air bag (20) is fixed to the inner top surface of the storage box (11), and a plurality of groups of fixing parts are fixed to the inner side of the matching cover (7) and the outer side of the matching block (8), and the fixing parts are composed of four fixing blocks (19), and the four fixing blocks (19) are arranged at equal intervals in the circumferential direction around the telescopic tube (15). Four extrusion blocks (18) are fixed on the telescopic tube (15), and the four extrusion blocks (18) are distributed in a three-dimensional spiral shape, and the four extrusion blocks (18) correspond to the four fixing blocks (19) respectively. The interior of the tube wall of the telescopic tube (15) is hollow, and the interior of the tube wall of the telescopic tube (15) is connected to a connecting pipe (17), and all the connecting pipes (17) are connected to the air bag (20).

4. The injection mold for easy stripping according to claim 3, characterized in that: The telescopic tube (15) is made of rubber.

5. The injection mold for easy stripping according to claim 3, characterized in that: All the telescopic tubes (15) located on the same plane are arranged at equal intervals.

6. The injection mold for easy stripping according to claim 3, characterized in that: The extrusion block (18) has a hemispherical structure, and the end of the fixing block (19) has a spherical structure.

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