Plastic mould base

Abstract

The utility model relates to the field of plastic mould frames, in particular to a plastic mould frame which comprises a hydraulic push rod, a lower pressing plate and a lower mould plate, a fixed vertical plate is arranged at the upper end of a mounting bottom plate, the hydraulic push rod is arranged at the upper end of a mounting top plate, the lower end of the hydraulic push rod is connected with the upper end of the lower pressing plate, an upper mould frame is arranged at the lower end of the lower pressing plate, and the lower mould plate is arranged at the upper end of the mounting bottom plate. The mold has the advantages that through cooperative work of the hydraulic push rod, the upper mold frame, the lower mold plate and the forming groove, mold forming operation can be rapidly completed, particularly, after forming, the push plate arranged at the lower end can rapidly push a mold out of the forming groove, the mold is not prone to falling off, and the mold is not prone to falling off. The production efficiency is greatly improved, and the demolding process is simplified; the design that the push plate and the mounting plate are tightly attached to the wall face of the lower die plate through the attaching groove ensures that the shape of the forming groove is accurately aligned with the shape of the upper die frame in the forming process, and burrs generated during model forming are effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic mold frames, in particular to a plastic mold frame. Background Art

[0002] The mold frame is a semi-finished product of the mold, composed of various steel plates and matching parts. It can be said to be the skeleton of the entire mold. Since the processing involved in the mold frame and the mold is very different, mold manufacturers will choose to order mold frames from mold frame manufacturers, using the production advantages of both parties to improve the overall production quality and efficiency. After years of development, the mold frame production industry has become quite mature, among which plastic mold frames have been widely used due to their excellent compatibility.

[0003] In the related art, after the mold is injection molded, an ejection unit at the bottom of the mold frame is generally used to eject the injection molded model. The existing ejection unit is generally controlled by a controller and requires multiple drive units to drive it. The structure is complex and inconvenient for maintenance and repair. Therefore, we propose a plastic mold frame.

[0004] The above information disclosed in this Background section is only for understanding the background of the present inventive concept and therefore it may contain information that does not constitute prior art. Utility Model Content

[0005] The utility model aims to provide a plastic mold frame to solve the problem that after the mold proposed in the above background technology is injection molded, an ejection unit at the bottom of the mold frame is generally used to eject the injection molded model, and the existing ejection unit is generally controlled by a controller and requires multiple drive units to drive, with a complex structure and inconvenient maintenance.

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

[0007] The cam is fixedly mounted on the top of the lower mold plate, and the cam is secured to the bottom of the lower mold plate with a plurality of push-pull means for activating the compression spring and the compression spring is secured to the bottom of the lower mold plate.

[0008] In some embodiments, the front and rear ends of the push plate are fixedly connected with a mounting plate, and the lower template has a mounting plate fitting groove at a corresponding position of the mounting plate, and the mounting plate is fitted with the wall surface of the lower template through the mounting plate fitting groove.

[0009] In some embodiments, an extended fixing block is welded and fixed on the upper end of the mounting plate, a transverse connecting plate is welded and fixed on the side of the extended fixing block away from the center of the forming groove, and a fixing plate is welded and installed on the side of the transverse connecting plates close to each other.

[0010] In some embodiments, a threaded rod is provided through the center of the fixing plate, the side of the threaded rod is threadedly engaged with the fixing plate, and the upper end of the threaded rod passes through the mounting top plate and is connected to the lower output end of the driving motor.

[0011] In some embodiments, the lower end of the threaded rod is rotatably disposed inside the lower template, and guide rods are symmetrically installed on both sides of the threaded rod.

[0012] In some embodiments, the guide rod passes through the fixed plate, the lower end of the guide rod is connected and fixed to the upper end of the lower template, and the upper end of the guide rod is connected and fixed to the lower end surface of the mounting top plate.

[0013] The beneficial effects of the utility model are:

[0014] Through the coordinated work of the hydraulic push rod, the upper mold frame, the lower mold plate and the molding groove, the mold molding operation can be completed quickly. In particular, after molding, the push plate set at the lower end can quickly push the model out of the molding groove, greatly improving production efficiency and simplifying the demoulding process; the push plate and the mounting plate are designed to fit tightly with the wall of the lower mold plate through the fitting groove, ensuring the precise alignment of the molding groove shape and the upper mold frame during the molding process, effectively reducing the burrs generated during model molding, thereby improving the final quality and surface finish of the molded product; the mechanism of threaded rod and drive motor linkage is adopted to achieve precise up and down movement control of the push plate (and fixed plate), which not only enhances the flexibility of operation, but also improves the stability and repeatability of the movement through motor drive. This design effectively avoids the inconsistency that may be caused by manual operation and ensures the consistency of each molding; the overall structural design is compact, and the setting of the guide rod improves the stability of the up and down movement of the fixed plate, avoids offset, ensures the high-performance operation of the equipment, and reduces the manufacturing cost and maintenance cost to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural schematic diagram of a plastic mold frame proposed by the utility model;

[0016] Figure 2This is a schematic diagram of the structure of a push plate assembly of a plastic mold frame proposed by the utility model;

[0017] Figure 3 The utility model is a schematic diagram of the lower template structure of a plastic mold frame.

[0018] In the figure: 1 is the mounting bottom plate, 2 is the mounting top plate, 3 is the fixed vertical plate, 4 is the hydraulic push rod, 5 is the driving motor, 6 is the lower pressure plate, 7 is the upper mold frame, 8 is the lower mold plate, 9 is the forming groove, 10 is the threaded rod, 11 is the guide rod, 12 is the fixed plate, 13 is the horizontal connecting plate, 14 is the extended fixed block, 15 is the mounting plate, 16 is the push plate, 17 is the mounting plate fitting groove, and 18 is the push plate fitting groove. DETAILED DESCRIPTION

[0019] 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.

[0020] It should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the utility model.

[0021] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] Reference Figure 1 , 23. A plastic mold frame, comprising a mounting base plate 1, a hydraulic push rod 4, a lower pressing plate 6 and a lower mold plate 8. The upper end of the mounting base plate 1 is vertically welded and fixedly installed with a fixed vertical plate 3. The upper front end of the fixed vertical plate 3 is horizontally welded and fixedly installed with a mounting top plate 2. The central position of the upper end of the mounting top plate 2 is installed with a hydraulic push rod 4. The lower end output end of the hydraulic push rod 4 penetrates the mounting top plate 2 and is connected and fixed with the upper end of the lower pressing plate 6. The central position of the lower end of the lower pressing plate 6 is detachably installed with an upper mold frame 7. The central position of the upper end of the mounting base plate 1 is fixedly installed with a lower mold plate 8 at a corresponding position of the upper mold frame 7. The lower mold plate 8 has an internal opening. A molding groove 9 is provided, and the shape of the molding groove 9 is consistent with the shape of the upper mold frame 7. Push plates 16 are symmetrically installed on the left and right sides of the lower mold plate 8 at the lower end of the molding groove 9. A push plate fitting groove 18 is opened at the corresponding position of the push plate 16 inside the lower mold plate 8. The push plate 16 is fitted with the wall surface of the lower mold plate 8 through the push plate fitting groove 18. The mold molding operation can be quickly completed through the hydraulic push rod 4, the upper mold frame 7, the lower mold plate 8 and the molding groove 9. The push plate 16 arranged at the lower end of the molding groove 9 can quickly push the model out of the molding groove 9 after molding to complete the demoulding operation of the model. The structure is simple and the cost is further reduced.

[0023] When the embodiments of the present utility model are implemented, Figure 1 , 3 As shown, the front and rear ends of the push plate 16 are fixedly connected with a mounting plate 15, and the lower template 8 is provided with a mounting plate fitting groove 17 at the corresponding position of the mounting plate 15. The mounting plate 15 is fitted with the wall surface of the lower template 8 through the mounting plate fitting groove 17. During the model forming process, due to the setting of the mounting plate fitting groove 17 and the push plate fitting groove 18, the shape of the forming groove 9 is kept consistent with the upper mold frame 7, thereby reducing the burrs of the model forming and improving the final quality of the forming.

[0024] When the embodiments of the present utility model are implemented, Figure 1 , 2 As shown, an extended fixing block 14 is welded and fixedly provided at the upper end of the mounting plate 15, a transverse connecting plate 13 is welded and fixedly provided at one side of the extended fixing block 14 away from the center of the forming groove 9, a fixing plate 12 is welded and installed at one side of the transverse connecting plates 13 close to each other, a threaded rod 10 is penetrated through the central position of the fixing plate 12, the side surface of the threaded rod 10 is threadedly engaged with the fixing plate 12, the upper end of the threaded rod 10 penetrates the mounting top plate 2 and is connected to the lower output end of the driving motor 5, and the driving motor 5 works to drive the threaded rod 10 to rotate, so that the fixing plate 12 moves up and down, and then drives the push plate 16 connected thereto to move up and down, and pushes the model out of the forming groove 9.

[0025] When the embodiments of the present utility model are implemented, Figure 1 , 2As shown, the lower end of the threaded rod 10 is rotatably set inside the lower template 8, and guide rods 11 are symmetrically installed on both sides of the threaded rod 10. The guide rods 11 penetrate the fixed plate 12, and the lower end of the guide rod 11 is connected and fixed to the upper end of the lower template 8. The upper end of the guide rod 11 is connected and fixed to the lower end surface of the mounting top plate 2. The contact position between the guide rod 11 and the fixed plate 12 is smoothly set. The stability of the up and down movement of the fixed plate 12 is improved by setting the guide rods 11 to avoid the fixed plate 12 from being offset.

[0026] In this embodiment,

[0027] Initial preparation: The device is supported by a mounting base plate 1, on which a fixed vertical plate 3 is fixed, and a mounting top plate 2 is horizontally welded at the front end of the fixed vertical plate 3. A hydraulic push rod 4 is installed in the center of the mounting top plate 2. The lower pressing plate 6 is located above the mounting base plate 1, and the upper mold frame 7 can be detachably installed, while the lower mold plate 8 is fixed on the mounting base plate 1, corresponding to the upper mold frame 7. A molding groove 9 is preset in the lower mold plate 8, and the shape matches the upper mold frame 7. The push plate 16 is symmetrically installed on both sides of the lower end of the molding groove 9, and is tightly fitted with the wall surface of the lower mold plate 8 through the push plate fitting groove 18. During operation, the hydraulic push rod 4 is pressed down, and the upper mold frame 7 is pushed downward through the lower pressing plate 6, and closed with the lower mold plate 8 to form a closed molding space. At this time, the material is injected into the molding groove 9 and is quickly solidified and molded under the action of high temperature and high pressure;

[0028] Push plate assisted demoulding: After molding is completed, the drive motor 5 is started, and the threaded rod 10 engaged with the central thread of the fixed plate 12 rotates, causing the fixed plate 12 and the push plate 16 connected thereto to move up and down. This movement is guided and stabilized by the guide rod 11 to ensure vertical stability without deviation;

[0029] Model ejection: As the push plate 16 moves upward, its thrust acts on the bottom of the molded model, pushing it out of the molding groove 9 quickly and smoothly to complete the demoulding operation. This process benefits from the design of the mounting plate 15 and the mounting plate fitting groove 17, which maintains the accuracy of the shape of the molding groove 9, reduces model molding defects, and improves the quality of the finished product.

[0030] 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. A plastic mold frame, comprising a mounting base plate (1), a hydraulic push rod (4), a lower pressing plate (6) and a lower mold plate (8), characterized in that: The upper end of the mounting base plate (1) is vertically welded and fixedly provided with a fixed vertical plate (3), the upper front end of the fixed vertical plate (3) is horizontally welded and fixedly provided with a mounting top plate (2), the upper center of the mounting top plate (2) is provided with a hydraulic push rod (4), the lower output end of the hydraulic push rod (4) passes through the mounting top plate (2) and is connected and fixed to the upper end of the lower pressing plate (6), the lower center of the lower pressing plate (6) is detachably provided with an upper mold frame (7), the upper center of the mounting base plate (1) is provided with a fixed vertical plate (3), and the upper center of the mounting base plate (1) is provided with a fixed vertical plate (3). A lower mold plate (8) is fixedly installed at a corresponding position of the upper mold frame (7), a molding groove (9) is provided inside the lower mold plate (8), and the shape of the molding groove (9) matches the shape of the upper mold frame (7), and push plates (16) are symmetrically installed at the lower ends of the molding grooves (9) on the left and right sides of the lower mold plate (8), and a push plate fitting groove (18) is provided inside the lower mold plate (8) at a corresponding position of the push plate (16), and the push plate (16) is fitted with the wall surface of the lower mold plate (8) through the push plate fitting groove (18).

2. A plastic mold frame according to claim 1, characterized in that: The front and rear ends of the push plate (16) are fixedly connected to a mounting plate (15), and the lower template (8) is provided with a mounting plate fitting groove (17) at a corresponding position of the mounting plate (15). The mounting plate (15) is fitted with the wall surface of the lower template (8) through the mounting plate fitting groove (17).

3. A plastic mold frame according to claim 2, characterized in that: An extended fixing block (14) is welded and fixedly arranged at the upper end of the mounting plate (15), a transverse connecting plate (13) is welded and fixedly arranged on the side of the extended fixing block (14) away from the center of the forming groove (9), and a fixing plate (12) is welded and installed on the side of the transverse connecting plates (13) close to each other.

4. A plastic mold frame according to claim 3, characterized in that: A threaded rod (10) is provided through the central position of the fixing plate (12), the side surface of the threaded rod (10) is threadedly engaged with the fixing plate (12), and the upper end of the threaded rod (10) passes through the mounting top plate (2) and is connected to the lower output end of the driving motor (5).

5. A plastic mold frame according to claim 4, characterized in that: The lower end of the threaded rod (10) is rotatably arranged inside the lower template (8), and guide rods (11) are symmetrically installed on both sides of the threaded rod (10).

6. A plastic mold frame according to claim 5, characterized in that: The guide rod (11) passes through the fixing plate (12), the lower end of the guide rod (11) is connected and fixed to the upper end of the lower template (8), and the upper end of the guide rod (11) is connected and fixed to the lower end surface of the mounting top plate (2).

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