CN219427359U - High-precision fixed-point rollback mechanism - Google Patents

Abstract

The utility model discloses a high-precision fixed-point retraction mechanism, which comprises an injection molding machine body, wherein a bottom plate is arranged at the bottom of the injection molding machine body, a cavity is arranged above the bottom plate in the injection molding machine body, a second connecting plate and a first connecting plate are connected in the cavity through a rebound mechanism, side plates are arranged on two sides of the upper surface of the bottom plate, which are positioned on the first connecting plate and the second connecting plate, and the side plates are connected with the injection molding machine body through connecting columns. According to the high-precision fixed-point retraction mechanism, the ejector rod, the spring mechanism, the cushion block, the sliding block and the second spring are matched, the ejector rod can be assisted to lift back to the corresponding position after the die is opened, and the relative positions of the sliding block and the cushion block are changed through movement of the ejector rod, so that the ejector plate is retracted twice.

Description

High-precision fixed-point rollback mechanism

Technical Field

The utility model belongs to the technical field of injection molding machines, and particularly relates to a high-precision fixed-point retraction mechanism.

Background

In the prior art, the top plate of the injection mold is retracted and reset only once, and the retraction mode has a simple structure but poor retraction position accuracy.

Disclosure of Invention

The utility model aims to provide a high-precision fixed-point rollback mechanism so as to solve the technical problems in the background technology.

In order to achieve the above purpose, the specific technical scheme of the utility model is as follows: the utility model provides a high accuracy fixed point mechanism that falls back, includes the injection molding machine body, the bottom of injection molding machine body is provided with the bottom plate, the upper side that is located the bottom plate in the injection molding machine body is provided with the cavity, be connected with second connecting plate and first connecting plate through resilient mechanism in the cavity, the upper surface of bottom plate is located the both sides of first connecting plate and second connecting plate and all is provided with the curb plate, be connected through the spliced pole between curb plate and the injection molding machine body, be provided with four ejector pins that are rectangular array distribution and reciprocate in the cavity, just connect through spring mechanism between ejector pin and the curb plate, the upper surface of bottom plate is provided with four cushion blocks that distribute with ejector pin bottom one-to-one, just the both sides of first connecting plate and second connecting plate all are provided with two and their sliding connection's slider, the lateral wall of slider contacts with the lateral wall of ejector pin.

Preferably, the spring mechanism comprises an extrusion plate fixedly connected with the upper surface of the side plate, extension blocks are arranged on two side walls of the ejector rod, and a first spring is arranged between the bottom of the extension blocks and the upper surface of the extrusion plate.

Preferably, the surface of the extrusion plate is provided with a sliding hole, and the part of the ejector rod below the extension block is inserted into the sliding hole and is connected with the sliding hole in an up-down sliding way.

Preferably, the side wall of the side plate is provided with a limit groove with the size identical to that of the ejector rod, and the ejector rod is connected with the limit groove in an up-down sliding mode.

Preferably, two symmetrically distributed grooves are formed in two sides of the first connecting plate and two sides of the second connecting plate, the sliding block is located in the grooves and is in sliding connection with the grooves, the sliding block is connected with the inner walls of the grooves through two second springs, and the sliding block is vertically distributed with the cushion blocks.

Preferably, a first inclined plane is arranged on the side wall of the bottom of the ejector rod, a second inclined plane which is distributed corresponding to the first inclined plane is arranged on the side wall of the sliding block, and U-shaped grooves which are distributed corresponding to the bottom of the ejector rod are formed in the upper surface of the cushion block.

The high-precision fixed-point rollback mechanism has the following advantages:

1. according to the high-precision fixed-point retraction mechanism, the ejector rod, the spring mechanism, the cushion block, the sliding block and the second spring are matched, the ejector rod can be assisted to lift back to the corresponding position after the die is opened, the relative position of the sliding block and the cushion block is changed through movement of the ejector rod, retraction of the ejector plate is realized twice, and accuracy of the retraction position is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a diagram showing the connection between the carrier rod and the pad block according to the present utility model;

FIG. 3 is a schematic view of a side plate according to the present utility model;

FIG. 4 is a schematic view of the ejector rod according to the present utility model;

FIG. 5 is a schematic view of a slider according to the present utility model;

the figure indicates: 1. an injection molding machine body; 2. a bottom plate; 3. a first connection plate; 4. a second connecting plate; 5. a side plate; 6. a connecting column; 7. a push rod; 8. a spring mechanism; 9. a cushion block; 10. a limit groove; 11. an extension block; 12. an extrusion plate; 13. a first spring; 14. a first inclined surface; 15. a groove; 16. a slide block; 17. a second spring; 18. a second inclined surface; 19. u-shaped groove.

Detailed Description

Hereinafter, only certain exemplary embodiments are briefly described. As will be recognized by those of skill in the pertinent art, the described embodiments may be modified in numerous different ways without departing from the spirit or scope of the embodiments of the present utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive.

In the description of the embodiments of the present utility model, it should be understood that the terms "length," "vertical," "horizontal," "top," "bottom," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience in describing the embodiments of the present utility model and to simplify the description, rather than to indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the embodiments of the present utility model, the meaning of "plurality" is two or more, unless explicitly defined otherwise.

In the embodiments of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly and include, for example, either permanently connected, removably connected, or integrally formed; the device can be mechanically connected, electrically connected and communicated; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present utility model will be understood by those of ordinary skill in the art according to specific circumstances.

The following disclosure provides many different implementations, or examples, for implementing different configurations of embodiments of the utility model. In order to simplify the disclosure of embodiments of the present utility model, components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit embodiments of the present utility model. Furthermore, embodiments of the present utility model may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed.

In order to better understand the purpose, structure and function of the present utility model, a high-precision fixed-point retracting mechanism of the present utility model will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1-5, the high-precision fixed-point retraction mechanism comprises an injection molding machine body 1, a bottom plate 2 is arranged at the bottom of the injection molding machine body 1, a cavity is arranged above the bottom plate 2 in the injection molding machine body 1, a second connecting plate 4 and a first connecting plate 3 are connected in the cavity through a rebound mechanism, side plates 5 are arranged on two sides of the upper surface of the bottom plate 2, which are positioned in the first connecting plate 3 and the second connecting plate 4, the side plates 5 are connected with the injection molding machine body 1 through connecting posts 6, four ejector rods 7 which are distributed in a rectangular array and can move up and down are arranged in the cavity, the ejector rods 7 are connected with the side plates 5 through spring mechanisms 8, the spring mechanisms 8 comprise extrusion plates 12 fixedly connected with the upper surface of the side plates 5, extension blocks 11 are arranged on two side walls of the ejector rods 7, a sliding hole is formed in the surface of the extrusion plate 12, the position of the extension block 11 is inserted into the sliding hole and is connected with the sliding hole up and down, the ejector rods 7 are mainly used for receiving the pushing force of an upper die and then move to a designated position, the ejector rods 7 are matched with the side plates 7 through the sliding grooves 10, and the side plates 10 are arranged at the positions of the side plates 10, and the side plates are matched with the side plates 10 in a limited position, and the limit positions are limited by the limit positions are arranged.

Four cushion blocks 9 which are distributed in one-to-one correspondence with the bottom of the ejector rod 7 are arranged on the upper surface of the bottom plate 2, two sliding blocks 16 which are in sliding connection with the first connecting plate 3 and the second connecting plate 4 are arranged on two sides of the first connecting plate 3 and the second connecting plate 4, two symmetrically distributed grooves 15 are arranged on two sides of the first connecting plate 3 and the second connecting plate 4, the sliding blocks 16 are positioned in the grooves 15 and are in sliding connection with the grooves 15, the sliding blocks 16 are connected with the inner walls of the grooves 15 through two second springs 17, the sliding blocks 16 are vertically distributed with the cushion blocks 9, a first inclined surface 14 is arranged on the bottom side wall of the ejector rod 7, a second inclined surface 18 which is distributed corresponding to the first inclined surface 14 is arranged on the side wall of the sliding blocks 16, U-shaped grooves 19 which are distributed corresponding to the bottom of the ejector rod 7 are arranged on the upper surface of the cushion blocks 9, through the setting of recess 15, the limiting displacement has been played to slider 16, and under the elastic action of second spring 17, elasticity has been produced to slider 16, when ejector pin 7 moves down, first inclined plane 14 and second inclined plane 18 contact, produce the extrusion force to second inclined plane 18, make slider 16 move in to recess 15, the bottom of ejector pin 7 and the contact of U type groove 19 inner wall simultaneously, slider 16 and cushion 9 break away from behind the ejector pin 7 moves down, make first connecting plate 3 at this moment, second connecting plate 4 and slider 16 fall to the bottom together under the effect of rebound mechanism, during the die sinking, ejector pin 7 is pushed up by first spring 13, slider 16 is retracted to cushion 9, support first connecting plate 3 and second connecting plate 4 and do not fall back to the normal position, wherein first connecting plate 3 is the faller.

It will be understood that the utility model has been described in terms of several embodiments, and that various changes and equivalents may be made to these features and embodiments by those skilled in the art without departing from the spirit and scope of the utility model. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the utility model without departing from the essential scope thereof. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.

Claims (6)

1. The utility model provides a high accuracy fixed point mechanism of moving back, includes injection molding machine body (1), the bottom of injection molding machine body (1) is provided with bottom plate (2), the top that is located bottom plate (2) in injection molding machine body (1) is provided with the cavity, be connected with second connecting plate (4) and first connecting plate (3) through rebound mechanism in the cavity, the upper surface of bottom plate (2) is located both sides of first connecting plate (3) and second connecting plate (4) and all is provided with curb plate (5), be connected through spliced pole (6) between curb plate (5) and injection molding machine body (1), its characterized in that: four ejector rods (7) which are distributed in a rectangular array and can move up and down are arranged in the cavity, the ejector rods (7) are connected with the side plates (5) through spring mechanisms (8), four cushion blocks (9) which are distributed in one-to-one correspondence with the bottoms of the ejector rods (7) are arranged on the upper surface of the bottom plate (2), two sliding blocks (16) which are connected with the first connecting plate (3) and the second connecting plate (4) in a sliding mode are arranged on two sides of the first connecting plate and the second connecting plate respectively, and the side walls of the sliding blocks (16) are in contact with the side walls of the ejector rods (7).

2. The high precision fixed point retraction mechanism according to claim 1 wherein: the spring mechanism (8) comprises an extrusion plate (12) fixedly connected with the upper surface of the side plate (5), extension blocks (11) are arranged on two side walls of the ejector rod (7), and a first spring (13) is arranged between the bottoms of the extension blocks (11) and the upper surface of the extrusion plate (12).

3. The high precision fixed point retraction mechanism according to claim 2 wherein: the surface of the extrusion plate (12) is provided with a sliding hole, and the part of the ejector rod (7) positioned below the extension block (11) is inserted into the sliding hole and is connected with the sliding hole in an up-down sliding way.

4. The high precision fixed point retraction mechanism according to claim 1 wherein: the side wall of the side plate (5) is provided with a limit groove (10) with the size identical to that of the ejector rod (7), and the ejector rod (7) is connected with the limit groove (10) in an up-down sliding mode.

5. The high precision fixed point retraction mechanism according to claim 1 wherein: the two sides of the first connecting plate (3) and the second connecting plate (4) are respectively provided with two symmetrically distributed grooves (15), the sliding blocks (16) are positioned in the grooves (15) and are in sliding connection with the grooves (15), the sliding blocks (16) are connected with the inner walls of the grooves (15) through two second springs (17), and the sliding blocks (16) are vertically distributed with the cushion blocks (9).

6. The high precision fixed point retraction mechanism according to claim 1 wherein: the bottom side wall of ejector rod (7) is provided with first inclined plane (14), the lateral wall of slider (16) is provided with second inclined plane (18) that are distributed with first inclined plane (14) correspondence, just the upper surface of cushion (9) is provided with U type groove (19) that are distributed with ejector rod (7) bottom correspondence.