Sprue-free pressurizing injection molding device

Abstract

The utility model provides a sprue-free pressurizing injection molding device, which relates to the technical field of injection molding industry and comprises a lower mold, an upper mold is arranged at the upper end of the lower mold, and a pressurizing component is arranged at the top end of the upper mold; the pressurizing assembly comprises a hydraulic oil cylinder, a pressurizing plate and a threaded rod, the hydraulic oil cylinder is arranged at the top end of the upper mold, the bottom end of the hydraulic oil cylinder is connected with the pressurizing plate, and the threaded rod is arranged at the bottom end of the pressurizing plate; a groove frame is arranged in the middle of the pressurizing assembly; the upper mold is arranged at the upper end of the lower mold, the pressurizing assembly is arranged on the top of the upper mold, pressurizing treatment can be conducted on the joint of the upper mold and the lower mold, and the situation that a gap is generated between the lower mold and the upper mold, and consequently materials overflow is effectively prevented; and the pressurizing plate and the upper mold at the bottom end of the threaded rod are pressurized, so that the tightness of the upper mold and the lower mold is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding industry, in particular to a gateless pressure injection molding device. Background Art

[0002] Injection molding is a method of producing industrial products. Products usually use rubber injection molding and plastic injection molding. Injection molding can also be divided into injection molding and die casting. Injection molding machine (referred to as injection machine or injection molding machine) is the main molding equipment that uses plastic molding molds to make plastic products of various shapes from thermoplastics or thermosetting materials. Injection molding is achieved through injection molding machines and molds.

[0003] However, the prior art uses an injection molding device to extrude the mold. However, when the injection molding device is molding the mold, a gap is easily generated in the middle of the upper mold and the lower mold, resulting in the problem of overflow of the materials inside the upper mold and the lower mold.

[0004] Therefore, the utility model provides a gateless pressure injection molding device. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art and provide a gateless pressure injection molding device.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a gateless pressure injection molding device, comprising a lower mold, an upper mold is arranged at the upper end of the lower mold, and a pressure component is arranged at the top end of the upper mold;

[0007] The pressurizing assembly includes a hydraulic cylinder, a pressurizing plate and a threaded rod. The top of the upper mold is provided with a hydraulic cylinder, and the bottom of the hydraulic cylinder is connected with a pressurizing plate, and the bottom of the pressurizing plate is provided with a threaded rod.

[0008] A slot frame is arranged in the middle of the pressurizing component; and a placement component is inserted in the middle of the slot frame, a disassembly component is arranged in the middle of the lower mold, a material pipe is connected to the bottom end of the lower mold, and a material delivery box is arranged at the bottom end of the material pipe.

[0009] As a preferred implementation, the hydraulic cylinder is fixedly connected to the pressure plate, and the threaded rod is connected to the pressure plate.

[0010] The technical effect of adopting the above further scheme is: by setting an upper mold at the upper end of the lower mold, and placing the top of the upper mold through a pressurizing component, the joint between the upper mold and the lower mold can be pressurized, effectively preventing the lower mold and the upper mold from generating a gap, which may cause material overflow.

[0011] As a preferred implementation, the pressure plate and the threaded rod are threadedly connected.

[0012] The technical effect of adopting the above-mentioned further scheme is: utilizing the pressure of the hydraulic cylinder to pressurize the upper mold at the bottom end of the pressure plate and the threaded rod, thereby greatly improving the tightness between the upper mold and the lower mold. It can be seen from the internal diagram of the lower mold that a set of electric telescopic rods are provided at the left end of the lower mold, which can open the apertures of the lower mold and the upper mold, and the mold can be taken out. The materials of the upper mold and the lower mold are transported to the interior of the upper mold through the material pipe through the feed box, thereby realizing a gateless injection method.

[0013] As a preferred implementation, the placement assembly includes an extrusion block and a clamping strip, the extrusion block is inserted in the middle of the slot frame, and the top end of the extrusion block is connected to the clamping strip.

[0014] The technical effect of adopting the above further solution is: by providing a slot frame in the middle of the upper mold, it is convenient to place the extrusion block of the placement component in the slot frame for installation.

[0015] As a preferred implementation, the extrusion block and the clamping strip are fixedly connected.

[0016] The technical effect of adopting the above further solution is that the extrusion block can be clamped inside the slot frame through the clamping strip for placement.

[0017] As a preferred embodiment, the disassembly assembly includes a molding box, a connecting plate and screws. The molding box is arranged in the middle of the lower mold, and connecting plates are connected to both sides of the molding box. Screws are passed through the middle of the connecting plates.

[0018] The technical effect of adopting the above further scheme is: by providing a disassembly component in the middle part of the lower mold, it is convenient to disassemble and clean the molding box in the middle part of the lower mold, and it is convenient for the user to clean the cavity of the lower mold, which greatly improves the cleaning effect of the lower mold.

[0019] As a preferred embodiment, the molding box forms a disassembly structure through screws and connecting plates, and two groups of connecting plates are provided.

[0020] The technical effect of adopting the above further solution is that the molding box can be locked inside the lower mold for installation by screws inserted into the middle of the connecting plate.

[0021] Compared with the prior art, the advantages and positive effects of the utility model are:

[0022] An upper mold is arranged at the upper end of the lower mold, and the top of the upper mold is arranged through a pressurizing component, so that the joint between the upper mold and the lower mold can be pressurized, which effectively prevents the lower mold and the upper mold from generating a gap, which may cause the material to overflow. The pressure of the hydraulic cylinder is used to pressurize the upper mold at the bottom of the pressurizing plate and the threaded rod, which greatly improves the tightness of the upper mold and the lower mold. It can be seen from the internal diagram of the lower mold that a group of electric telescopic rods are arranged at the left end of the lower mold, which can open the caliber of the lower mold and the upper mold, and the mold can be taken out. The materials of the upper mold and the lower mold are transported to the interior of the upper mold through the material pipe through the feed box, thereby realizing a gateless injection method. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the injection molding device of the utility model;

[0024] Figure 2 It is a partial enlarged structural diagram of the pressurizing component of the utility model;

[0025] Figure 3 This is the internal structure diagram of the lower mold and the upper mold of the utility model;

[0026] Figure 4 For this utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0027] Among them: 1. Lower mold; 2. Upper mold; 3. Pressurizing assembly; 301. Hydraulic cylinder; 302. Pressurizing plate; 303. Threaded rod; 4. Slot rack; 5. Placement assembly; 501. Extrusion block; 502. Card strip; 6. Disassembly assembly; 601. Molding box; 602. Connecting plate; 603. Screws; 7. Material pipe; 8. Feed box. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] Example

[0030] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the utility model provides a technical solution: a gateless pressurized injection molding device, comprising a lower mold 1, an upper mold 2 is arranged at the upper end of the lower mold 1, and a pressurizing component 3 is arranged at the top end of the upper mold 2;

[0031] The pressurizing assembly 3 includes a hydraulic cylinder 301, a pressurizing plate 302 and a threaded rod 303. The hydraulic cylinder 301 is arranged at the top of the upper mold 2, and the bottom end of the hydraulic cylinder 301 is connected to the pressurizing plate 302. The threaded rod 303 is arranged at the bottom end of the pressurizing plate 302.

[0032] A slot frame 4 is provided in the middle of the pressurizing component 3; and a placement component 5 is inserted in the middle of the slot frame 4, a disassembly component 6 is provided in the middle of the lower mold 1, a material pipe 7 is connected to the bottom end of the lower mold 1, and a feed box 8 is provided at the bottom end of the material pipe 7. Specifically, first, an upper mold 2 is provided at the upper end of the lower mold 1, and the top of the upper mold 2 is placed by the pressurizing component 3, so that the joint between the upper mold 2 and the lower mold 1 can be pressurized, which effectively prevents the lower mold 1 and the upper mold 2 from generating a gap, resulting in material overflow. The pressure of the hydraulic cylinder 301 is used to pressurize the upper mold 2 at the bottom end of the pressurizing plate 302 and the threaded rod 303, which greatly improves the tightness between the upper mold 2 and the lower mold 1. Figure 3 It can be seen from the internal diagram of the lower mold 1 that a group of electric telescopic rods are provided at the left end of the lower mold 1, which can open the caliber of the lower mold 1 and the upper mold 2, and the mold can be taken out. The materials of the upper mold 2 and the lower mold 1 are transported to the interior of the upper mold 2 by the material feeding box 8 through the material pipe 7, thereby realizing a gateless injection method. A groove frame 4 is provided in the middle of the upper mold 2, which is convenient for placing the extrusion block 501 of the placement component 5 in the groove frame 4, and the extrusion block 501 can be clamped in the interior of the groove frame 4 through the clamping strip 502 for placement processing. A disassembly component 6 is provided in the middle of the lower mold 1, which is convenient for disassembling and cleaning the molding box 601 in the middle of the lower mold 1, which is convenient for the user to clean the cavity of the lower mold 1, greatly improving the lower mold 1 Cleaning effect, through the screw 603 inserted in the middle of the connecting plate 602, the molding box 601 can be locked inside the lower mold 1 for installation. Through this technical solution, the problem of insufficient pressure during injection molding, which easily leads to gaps at the mold joints and causes material overflow, is solved. The upper end of the lower mold 1 is provided with an upper mold 2, and the top of the upper mold 2 is placed through the pressurizing component 3. The joint between the upper mold 2 and the lower mold 1 can be pressurized to effectively prevent the lower mold 1 and the upper mold 2 from having gaps, which leads to material overflow. The pressure of the hydraulic cylinder 301 is used to pressurize the upper mold 2 at the bottom of the pressurizing plate 302 and the threaded rod 303, which greatly improves the tightness of the upper mold 2 and the lower mold 1. Figure 3 From the internal diagram of the lower mold 1, it can be seen that a group of electric telescopic rods are arranged at the left end of the lower mold 1, which can open the apertures of the lower mold 1 and the upper mold 2, and the molds can be taken out. The materials of the upper mold 2 and the lower mold 1 are transported to the interior of the upper mold 2 through the material pipe 7 and the material box 8, thereby realizing a gateless injection method.

[0033] Further, such as Figure 1 , Figure 3 and Figure 4 As shown: the placement component 5 also includes an extrusion block 501 and a clamping strip 502. The extrusion block 501 is inserted in the middle of the slot frame 4, and the top of the extrusion block 501 is connected to the clamping strip 502. The advantage of this technical solution is that the slot frame 4 is provided in the middle of the upper mold 2, which facilitates the placement of the extrusion block 501 of the placement component 5 in the slot frame 4. The extrusion block 501 can be clamped inside the slot frame 4 through the clamping strip 502 for placement.

[0034] The above solution still has the problem that it is not convenient to disassemble and clean the cavity in the middle of the lower mold 1. Figure 2 and Figure 4 As shown: in this solution, the disassembly assembly 6 includes a molding box 601, a connecting plate 602 and a screw 603. The molding box 601 is arranged in the middle of the lower mold 1, and the connecting plates 602 are connected to both sides of the molding box 601. The screws 603 are penetrated in the middle of the connecting plate 602. The disassembly assembly 6 is arranged in the middle of the lower mold 1, so that the molding box 601 in the middle of the lower mold 1 can be disassembled and cleaned, and the user can clean the cavity of the lower mold 1, which greatly improves the cleaning effect of the lower mold 1. The screws 603 are penetrated in the middle of the connecting plate 602, so that the molding box 601 can be locked inside the lower mold 1 for installation.

[0035] Working principle:

[0036] like Figure 1-4 As shown:

[0037] First, the upper end of the lower mold 1 is provided with an upper mold 2. The top of the upper mold 2 is placed by the pressurizing component 3, and the joint between the upper mold 2 and the lower mold 1 can be pressurized to effectively prevent the gap between the lower mold 1 and the upper mold 2, which may cause the material to overflow. The pressure of the hydraulic cylinder 301 is used to pressurize the upper mold 2 at the bottom of the pressurizing plate 302 and the threaded rod 303, which greatly improves the tightness between the upper mold 2 and the lower mold 1. Figure 3It can be seen from the internal diagram of the lower mold 1 that a group of electric telescopic rods are provided at the left end of the lower mold 1, which can open the caliber of the lower mold 1 and the upper mold 2, and the mold can be taken out. The materials of the upper mold 2 and the lower mold 1 are transported to the interior of the upper mold 2 by the material pipe 7 through the feed box 8, thereby realizing a gateless injection method. A groove frame 4 is provided in the middle of the upper mold 2, which is convenient for placing the extrusion block 501 of the placement component 5 in the groove frame 4, and the extrusion block 501 can be clamped in the interior of the groove frame 4 through the clamping strip 502 for placement. A disassembly component 6 is provided in the middle of the lower mold 1, which is convenient for disassembling and cleaning the molding box 601 in the middle of the lower mold 1, which is convenient for the user to clean the cavity of the lower mold 1, greatly improving the cleaning effect of the lower mold 1, and the molding box 601 can be locked in the interior of the lower mold 1 through the screw 603 inserted in the middle of the connecting plate 602 for installation.

[0038] The above are only preferred embodiments of the present invention, and are not intended to limit the present invention in other forms. Any technician familiar with the profession may use the technical contents disclosed above to change or modify them into equivalent embodiments with equivalent changes and apply them to other fields. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A gateless pressure injection molding device, comprising a lower mold (1), characterized in that: An upper mold (2) is arranged at the upper end of the lower mold (1), and a pressurizing component (3) is arranged at the top end of the upper mold (2); The pressurizing assembly (3) comprises a hydraulic cylinder (301), a pressurizing plate (302) and a threaded rod (303); the hydraulic cylinder (301) is arranged at the top of the upper mold (2); the pressurizing plate (302) is connected to the bottom of the hydraulic cylinder (301); and the threaded rod (303) is arranged at the bottom of the pressurizing plate (302); A trough frame (4) is provided in the middle of the pressurizing component (3); and a placement component (5) is inserted in the middle of the trough frame (4); a disassembly component (6) is provided in the middle of the lower mold (1); a material pipe (7) is connected to the bottom end of the lower mold (1), and a material delivery box (8) is provided at the bottom end of the material pipe (7).

2. A gateless pressure injection molding device according to claim 1, characterized in that: The hydraulic cylinder (301) and the pressure plate (302) are fixedly connected, and the threaded rod (303) is connected to the pressure plate (302).

3. The gateless pressure injection molding device according to claim 1, characterized in that: The pressure plate (302) and the threaded rod (303) are threadedly connected.

4. The gateless pressure injection molding device according to claim 1, characterized in that: The placement assembly (5) comprises an extrusion block (501) and a clamping strip (502); the extrusion block (501) is inserted in the middle of the slot frame (4), and the top end of the extrusion block (501) is connected to the clamping strip (502).

5. A gateless pressure injection molding device according to claim 4, characterized in that: The extrusion block (501) and the clamping strip (502) are fixedly connected.

6. The gateless pressure injection molding device according to claim 1, characterized in that: The disassembly assembly (6) comprises a molding box (601), a connecting plate (602) and screws (603); the molding box (601) is arranged in the middle of the lower mold (1), and connecting plates (602) are connected to both sides of the molding box (601); and screws (603) are passed through the middle of the connecting plate (602).

7. A gateless pressure injection molding device according to claim 6, characterized in that: The molding box (601) forms a disassembly structure through screws (603) and connecting plates (602), and two groups of connecting plates (602) are provided.

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