阅读说明：本技术 分步增压橡胶射出成型机 (Step-by-step pressurizing rubber injection molding machine ) 是由 赖锦柱 于 2019-10-29 设计创作，主要内容包括：本发明公开了一种分步增压橡胶射出成型机,包括底座和顶盖,底座和顶盖之间设置有至少三根导向柱,导向柱上固定有压盘,压盘能够挤压底座的顶部的成型模具；压盘上设置有油泵,顶盖的中部设置有空腔,油泵能够延伸至空腔内；顶盖的底部设置有增压块,增压块能够在水平面转动且能够在竖直方向上往复运动以使得增压块置于油泵的顶部。该分步增压橡胶射出成型机能够高效地实现橡胶射出成型机的增压要求。(the invention discloses a step-by-step pressurizing rubber injection molding machine which comprises a base and a top cover, wherein at least three guide posts are arranged between the base and the top cover, pressure plates are fixed on the guide posts, and the pressure plates can extrude a molding die at the top of the base; an oil pump is arranged on the pressure plate, a cavity is arranged in the middle of the top cover, and the oil pump can extend into the cavity; the bottom of top cap is provided with the pressure boost piece, and the pressure boost piece can rotate and can be at vertical direction reciprocating motion so that the top of oil pump is arranged in to the pressure boost piece at the horizontal plane. The step-by-step pressurizing rubber injection molding machine can efficiently meet the pressurizing requirement of the rubber injection molding machine.)

1. The step-by-step pressurizing rubber injection molding machine is characterized by comprising a base (1) and a top cover (5), wherein at least three guide columns (3) are arranged between the base (1) and the top cover (5), a pressure plate (9) is fixed on each guide column (3), and the pressure plate (9) can extrude a molding die (2) at the top of the base (1); an oil pump (8) is arranged on the pressure plate (9), a cavity (6) is arranged in the middle of the top cover (5), and the oil pump (8) can extend into the cavity (6); the bottom of the top cover (5) is provided with a pressurizing block (7), and the pressurizing block (7) can rotate on the horizontal plane and can reciprocate in the vertical direction so that the pressurizing block (7) is arranged at the top of the oil pump (8).

2. The step-by-step pressurized rubber injection molding machine according to claim 1, wherein the number of the guide posts (3) is four, and through holes are provided around the pressure plate (9) and are sleeved on the guide posts (3).

3. The stepped boost rubber injection molding machine according to claim 1, wherein a bearing is provided between the through hole and the guide post (3).

4. The step-by-step pressurized rubber injection molding machine according to claim 1, characterized in that the pressurizing block (7) is fixed to the drive shaft (4), and a rotation drive mechanism (11) is connected to an end of the pressurizing block (7).

5. The step-by-step pressurized rubber injection molding machine according to claim 4, wherein a V-shaped crank arm (10) is fixed to the drive shaft (4), the pressurizing block (7) is fixed to one end of the V-shaped crank arm (10), and the rotational drive mechanism (11) is connected to the other end.

6. The step-by-step pressurized rubber injection molding machine according to claim 4, wherein said rotary drive mechanism (11) comprises a rotary air pump and a drive shaft, said drive shaft being coupled to said V-shaped crank arm (10).

7. A stepped boost rubber injection molding machine as defined in claim 4 wherein said drive shaft (4) is a telescopic shaft and said telescopic shaft is driven by an air pump.

8. The step-pressurized rubber injection molding machine according to claim 1, characterized in that the cross-sectional area of the horizontal surface of the pressurization block (7) is not smaller than the cross-sectional area of the horizontal surface of the oil pump (8).

9. The step-by-step pressurized rubber injection molding machine according to claim 1, characterized in that both ends of the cavity (6) are open, and a stopper is provided at the top of the cavity (6).

Technical Field

The invention relates to a rubber injection molding machine, in particular to a step-by-step pressurizing rubber injection molding machine.

Background

Injection molding, also known as injection molding, is a process in which a polymer material melted by an injection machine is introduced into a mold under the thrust action of a plunger or a screw, and a product is obtained by cooling. The plastic is plasticized in a heating cylinder of an injection molding machine and then injected into a mold cavity of a closed mold by a plunger or a reciprocating screw to form a product. The method can process products with complex shapes, accurate sizes or with inserts, and has high production efficiency. Most thermoplastics and certain thermosets (e.g., phenolics) can be processed by this method.

Rubber injection molding is a method of molding rubber by injection molding, and in the process, a mold is pressurized by oil pressure. In the prior art, if the requirement for pressure is large, the volume of the oil pump is generally increased or a pressurizing and pressurizing block is formed, so as to achieve the effect of further pressurizing. In any of the above-described modes, new demands are made on the volume of the rubber injection molding machine. The increase of the volume of the device increases the production cost on one hand, and on the other hand, is not convenient for the transportation and storage of the device.

Disclosure of Invention

The invention aims to provide a step-by-step pressurizing rubber injection molding machine which can effectively meet the pressurizing requirement of the rubber injection molding machine.

In order to achieve the purpose, the invention provides a step-by-step pressurizing rubber injection molding machine which comprises a base and a top cover, wherein at least three guide columns are arranged between the base and the top cover, pressure plates are fixed on the guide columns, and the pressure plates can extrude a molding die at the top of the base; an oil pump is arranged on the pressure plate, a cavity is arranged in the middle of the top cover, and the oil pump can extend into the cavity; the bottom of top cap is provided with the pressure boost piece, and the pressure boost piece can rotate and can be at vertical direction reciprocating motion so that the top of oil pump is arranged in to the pressure boost piece at the horizontal plane.

Preferably, the number of guide posts is four, and the pressure plate is provided with through holes all around, and the guide posts are located to the through holes cover.

Preferably, a bearing is arranged between the through hole and the guide column.

Preferably, the pressurizing block is fixed to the driving shaft, and a rotation driving mechanism is connected to an end of the pressurizing block.

Preferably, a V-shaped crank arm is fixed on the driving shaft, one end of the V-shaped crank arm is fixed with the pressurizing block, and the other end of the V-shaped crank arm is connected with the rotation driving mechanism.

Preferably, the rotation driving mechanism includes a rotation air pump and a driving shaft coupled with the V-shaped crank arm.

Preferably, the drive shaft is a telescopic shaft, and the telescopic shaft is driven by an air pump.

Preferably, the cross-sectional area of the horizontal plane of the pressurizing block is not smaller than the cross-sectional area of the horizontal plane of the oil pump.

Preferably, both ends of the cavity are open, and the top of the cavity is provided with a stopper.

In the technical scheme, the working principle of the step-by-step pressurizing rubber injection molding machine provided by the invention is as follows: when the rubber injection molding machine does not work, the top of the oil pump is positioned in the cavity, the pressure plate rises to the highest position, and the pressurizing block is not contacted with the pressure plate; once the oil pump reaches a preset value, the pressing plate moves downwards along the guide post until the bottom of the pressing plate pressurizes the forming die; and then starting the pressurizing block, wherein the pressurizing block moves to the top of the oil pump, so that the forming die is further pressurized. As can be seen from the above description, the rubber injection molding machine achieves the purpose of increasing the pressure value of the existing rubber injection molding machine in a step-by-step pressurization mode, and meanwhile, the size of the device does not need to be changed, and the cost does not need to be increased basically.

Additional features and advantages of the invention will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic structural view of a preferred embodiment of a step-by-step pressurized rubber injection molding machine provided by the present invention;

Fig. 2 is a bottom view of the surface a-a of fig. 1 in an operating state (in a state where the oil pump is extended to the cavity).

Description of the reference numerals

1. Base 2 and forming die

3. Guide post 4, drive shaft

5. Top cover 6, cavity

7. Pressurizing block 8 and oil pump

9. Pressure plate 10, V-shaped crank arm

11. A rotation driving mechanism.

Detailed Description

The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.

In the present invention, unless otherwise specified, the directional words "upper, lower, inner, outer" and the like included in the terms merely represent the orientation of the terms in a conventional use state or are colloquially understood by those skilled in the art, and should not be construed as limiting the terms.

The invention provides a step-by-step pressurizing rubber injection molding machine, which comprises a base 1 and a top cover 5, wherein at least three guide posts 3 are arranged between the base 1 and the top cover 5, a pressure plate 9 (the pressure plate 9 can reciprocate in the vertical direction) is fixed on each guide post 3, and the pressure plate 9 can extrude a molding die 2 at the top of the base 1; an oil pump 8 is arranged on the pressure plate 9, a cavity 6 is arranged in the middle of the top cover 5, and the oil pump 8 can extend into the cavity 6; the bottom of the top cover 5 is provided with a pressurizing block 7, and the pressurizing block 7 can rotate on the horizontal plane and can reciprocate in the vertical direction so that the pressurizing block 7 is placed on the top of the oil pump 8.

The working principle of the step-by-step pressurizing rubber injection molding machine is as follows: when the rubber injection molding machine does not work, the top of the oil pump 8 is positioned in the cavity 6, the pressure plate 9 rises to the highest position, and the pressurizing block 7 is not in contact with the pressure plate 9; once the forming die 2 needs to be pressurized, the oil pump 8 is started first, and once the oil pump 8 reaches a preset value, the pressure plate 9 moves downwards along the guide posts 3 until the bottom of the pressure plate 9 pressurizes the forming die 2; the pressurizing block 7 is then activated, and the pressurizing block 7 moves to the top of the oil pump 8, thereby further pressurizing the molding die 2. As can be seen from the above description, the rubber injection molding machine achieves the purpose of increasing the pressure value of the existing rubber injection molding machine in a step-by-step pressurization mode, and meanwhile, the size of the device does not need to be changed, and the cost does not need to be increased basically.

In the present invention, the number of the guide posts 3 and the fixing manner of the guide posts 3 and the pressure plate 9 can be selected in a wide range, but in order to further improve the stability of the guide posts 3 and the pressure plate 9, it is preferable that the number of the guide posts 3 is four, and through holes are provided around the pressure plate 9, and the through holes are fitted over the guide posts 3. Thus, the cooperation of the through-hole and the guide post 3 realizes the directional movement of the pressure plate 9.

In addition to the above embodiment, in order to further improve the operational stability of the pressure plate 9, a bearing is preferably provided between the through hole and the guide post 3.

In the present invention, the fixing manner of the pressurizing block 7 can be selected in a wide range, but in order to further enhance the effect of rotating and lifting the pressurizing block 7, it is preferable that the pressurizing block 7 is fixed to the driving shaft 4 and the rotation driving mechanism 11 is connected to the end of the pressurizing block 7. Therefore, the pressurizing block 7 can pressurize the molding die 2 by its own weight, and can further pressurize the molding die 2 by driving the driving shaft 4 (which can be driven by an air pump).

In the above embodiment, in order to further improve the rotation efficiency of the pressurizing block 7, it is preferable that a V-shaped crank arm 10 is fixed to the driving shaft 4, the pressurizing block 7 is fixed to one end of the V-shaped crank arm 10, and the rotation driving mechanism 11 is connected to the other end. Thus, the rotation of the pressurizing block 7 can be quickly realized by the driving of the rotation driving mechanism 11.

In the above embodiment, the specific structure of the rotation drive mechanism 11 can be selected within a wide range, but in order to further enhance the convenience of operation, it is preferable that the rotation drive mechanism 11 includes a rotation air pump and a drive shaft that is coupled to the V-shaped crank arm 10; more preferably, the drive shaft 4 is a telescopic shaft, and the telescopic shaft is driven by an air pump.

In the present invention, the volume of the pressurizing block 7 can be selected within a wide range, but in order to further enhance the pressurizing effect of the pressurizing block 7, it is preferable that the horizontal cross-sectional area of the pressurizing block 7 is not smaller than the horizontal cross-sectional area of the oil pump 8.

On the basis of the above embodiments, in order to further improve the safety of the device, it is preferable that both ends of the cavity 6 are open, and a stopper is disposed at the top of the cavity 6, so that the oil pump 8 can be prevented from rushing out of the cavity 6, thereby reducing the potential safety hazard.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.

It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.

In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.