CN201720668U - Bushing pressing device - Google Patents

Abstract

The utility model relates to a bush pressing device. It mainly solves the problem that the rubber bushing is easily damaged by the edge of the assembly hole when the general press-fitting device is working. It includes a frame with a base for placing parts at the lower end of the frame. A cylinder is installed at the upper end of the frame. The cylinder has a piston. A connecting head is installed on the front end of the piston, and a guide block is connected to the connecting body through a pull rod. A guide hole for placing the bushing is arranged in the middle of the guide block. The guide hole is composed of an upper straight hole and a lower tapered hole. The utility model has the advantages of simple structure and convenient manufacture. The guide hole is designed as a combination of a straight hole and a tapered hole, so that when the rubber bushing is pressed, the rubber part of the product is not easily damaged by the edge of the installation hole, which greatly reduces scrapping. In addition, the bushing can automatically adjust the center position during the press-fitting process to ensure that the shaft hole of the bushing is coaxial with the assembly hole of the processed part, which improves the product qualification rate.

Description

A bushing pressing device

technical field

The utility model relates to a bushing press-fitting device, in particular to a bushing press-fitting device which can reduce bushing scrapping and improve work efficiency.

Background technique

Usually, the rubber bushing press-fitting device adopts direct press-fitting, and the rubber bushing is directly pressed into the assembly hole of the product. Generally, the press-fitting device has a guide body, and the guide body is provided with a guide hole. Usually, the guide holes are straight. Through holes, so that the rubber bushing is easily damaged by the edge of the assembly hole during press-fitting, resulting in damage to the rubber bushing and a high scrap rate. Chinese utility model 200720033477.5 discloses a bushing press-fitting device, which includes a frame, a positioning rod, a punch, and a feeding device. A guide sleeve is fixed between the feeding block and the positioning rod, and a taper hole whose axis line coincides with the axis line of the positioning rod is opened on the guide sleeve. Although the tapered hole on the guide sleeve can avoid the problem that the shaft sleeve is damaged by the assembly hole, the shaft sleeve in the tapered hole can easily cause the axis of the shaft sleeve to deviate from the axis of the assembly hole, causing a deviation in the installation position, which accelerates the speed of the shaft sleeve. Or the wear of the spindle shortens the service life.

Contents of the invention

The utility model mainly solves the problem that the rubber bushing is easily damaged by the edge of the assembly hole when the general press-fitting device is working, and provides a bushing press-fitting device that can reduce the scrapping of the bushing and improve work efficiency.

The technical scheme adopted by the utility model to solve the technical problem is: a bush press-fitting device, including a frame, a base for placing parts is arranged at the lower end of the frame, and a cylinder is installed at the upper end of the frame, and the cylinder has a piston. A connecting head is installed on the front end of the piston, and a guide block is connected to the connecting body through a pull rod. There is a guide hole in the middle of the guide block for placing the bushing. It is characterized in that: the guide hole is funnel-shaped. The hole and the lower tapered hole constitute. The guide hole is designed in a funnel shape, so that when the rubber bush is pressed, the rubber part of the product is not easily damaged by the edge of the installation hole, which greatly reduces the scrap rate and improves work efficiency; in addition, the bush can be automatically adjusted during the pressing process The central position ensures that the shaft hole of the bushing is coaxial with the assembly hole of the processed part, which improves the product qualification rate; another advantage of this device is that the guide hole is composed of two parts: a straight hole and a tapered hole, and the bushing is placed Both the material and the press-fitting are carried out on the guide block, which saves the feeding block, simplifies the structure and reduces the manufacturing cost.

As a preferred solution of the above solution, the connecting body is provided with a pressure head for hitting the bushing, the connecting body is provided with a through hole 1, the pull rod penetrates into the through hole 1, and a nut is provided at the upper end of the pull rod to The pull rod is hung on the connecting body, the guide block is provided with a second through hole corresponding to the pull rod, and the guide block is sleeved on the lower end of the pull rod. The lower end of the tie rod has a ring of convex edges, and the second through hole is designed as an inverted T line, matching the shape of the lower end of the tie rod, so that the guide block will not slip when it is placed on the tie rod, and the tie rod and the connecting body are not fixed. When moving downwards, after the pull rod hits an object, the connecting body can continue to descend along the pulling rod, and the pull rod plays a guiding role for the connecting body.

As a preferred solution of the above solution, a return spring is provided on the pull rod between the connecting body and the guide block. One end of the back-moving spring is pushed against the lower part of the connecting body, and the other end is pushed against the upper part of the guide block, and the return spring gives the guide block a downward force, so that the guide block is always located at the lower end of the pull rod. When the connecting body rises, the return spring makes the connecting body return to its original position, so that the pressure head is pulled away from the guide hole to expose the guide hole, so that the next bushing can be placed.

As a preferred solution of the above solution, a positioning hole 1 is provided on the guide block, and a positioning pin 1 corresponding to the positioning hole 1 is provided on the base. The positioning hole 1 and the positioning pin play a positioning role on the guide block, and the falling position of the guide block is more accurate, and the bushing can be pressed into the assembly hole of the processed part more accurately.

As a preferred solution of the above solution, a positioning hole 2 is provided on the pressure head, and the positioning hole 2 is arranged coaxially with the guide hole, and a positioning pin 2 corresponding to the positioning hole 2 is provided on the base. . The second positioning hole and the second positioning pin play a positioning role on the guide block, and the falling position of the guide block is more accurate, and the bush can be pressed into the assembly hole of the processed part more accurately.

The utility model has the advantages of simple structure and convenient manufacture. The guide hole is designed as a combination of a straight hole and a tapered hole, so that when the rubber bushing is pressed, the rubber part of the product is not easily damaged by the edge of the installation hole, which greatly reduces scrapping. In addition, the bushing can automatically adjust the center position during the press-fitting process to ensure that the shaft hole of the bushing is coaxial with the assembly hole of the processed part, which improves the product qualification rate.

Description of drawings

Fig. 1 is a kind of structural representation of the utility model;

Fig. 2 is a kind of structural representation of the utility model when in press-fit state;

FIG. 3 is a schematic diagram of the enlarged structure at A in FIG. 1 .

Detailed ways:

The technical solutions of the present utility model will be further described below through the embodiments and in conjunction with the accompanying drawings.

Example:

A bushing pressing device in this embodiment, as shown in Figure 1 and Figure 2, includes a frame 1, a base 15 for placing a processed part 17 is installed on the lower part of the frame, and a working cylinder is installed on the upper end of the frame 2. The working cylinder has a piston 3, and a connecting body 4 is installed on the piston. The connecting body includes a main body socketed with the piston and a connecting edge arranged around the main body. A pressure head 10 for hitting the bushing 18 is installed on the lower part of the connecting body , two through holes 12 are provided on the connecting edge, and a pull rod 6 is arranged in the through hole 1, and a nut is installed on the upper end of the pull rod, so that the pull rod is hung on the connecting edge, and a circle of convex edge 21 is provided at the lower end of the pull rod. A guide block 7 is provided, and two through holes 13 are arranged on the guide block. The second through hole is designed as an inverted T shape matched with the lower end of the pull rod. A return spring 5 is arranged on the pull rod between the body and the guide block. As shown in Figure 3, a guide hole 8 is provided in the middle of the guide block, the axis of the guide hole and the axis of the indenter are on the same straight line, and the guide hole is formed by connecting the upper straight hole 19 and the lower tapered hole 20, The bushing is placed in a straight bore. Also be provided with two positioning holes one 9 on the guide block, be provided with two positioning pins one 14 matching with positioning holes one on the base, be provided with a positioning hole two 11 in the middle of the indenter, the positioning hole two and The guide holes are arranged coaxially, and a positioning pin 2 16 corresponding to the positioning hole 11 is provided on the base 15 .

Before the bush pressing device works, as shown in Figure 1, place the processed part 17 on the base, place the bush in the guide hole, and then start the device, the working cylinder drives the piston to move downward, and the piston drives the connection The body, the pull rod and the guide block move downward together, as shown in Figure 2, the positioning pin 1 penetrates into the positioning hole 1, and the positioning pin 2 passes through the hole in the middle of the bushing, and the positioning block contacts the surface of the base to stop falling. At this time, the piston is still descending, and the connecting body moves down along the pull rod. The pressure head on the connecting body pushes against the bushing, and the bushing is pressed into the assembly hole of the processed part along the guide hole. During the pressing down of the bushing, the positioning pin 2 passes through the hole in the center of the bushing, and then penetrates into the positioning hole 2 on the pressure head. After the bushing is fully pressed into the processed part, the piston moves upwards, and the guide block and connecting body return to their original positions under the action of the return spring.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which the present invention belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the present invention or go beyond the definition of the appended claims range.

Although terms such as connecting body, tie rod, guide block, pressure head, and working cylinder are frequently used in this paper, the possibility of using other terms is not excluded. These terms are used only for the purpose of describing and explaining the essence of the present invention more conveniently; interpreting them as any kind of additional limitation is against the spirit of the present invention.

Claims (5)

1. A bushing press-fitting device, comprising a frame, a base for placing parts is provided at the lower end of the frame, a cylinder is installed at the upper end of the frame, the cylinder has a piston, and a connecting body is installed on the front end of the piston. The upper part is connected with a guide block through a pull rod, and a guide hole for placing the bushing is provided in the middle of the guide block. Hole (20) constitutes. 2. A bush pressing device according to claim 1, characterized in that the connecting body (4) is provided with an indenter (10) for hitting the bushing, and the connecting body is provided with a through hole ( 12), the pull rod (6) runs through the through hole 1, and a nut is provided at the upper end of the pull rod to hang the pull rod on the connecting body, and the guide block (7) is provided with a through hole 2 corresponding to the pull rod ( 13), the guide block is sleeved on the lower end of the pull rod (6). 3. A bush pressing device according to claim 2, characterized in that a return spring (5) is provided on the pull rod (6) between the connecting body (4) and the guide block (7). 4. A bush pressing device according to claim 1, 2 or 3, characterized in that a positioning hole (9) is provided on the guide block, and a positioning hole is provided on the base (15) a corresponding dowel pin one (14). 5. A bushing press-fitting device according to claim 2, characterized in that a positioning hole 2 (11) is provided on the press head (10), and the positioning hole 2 is coaxially arranged with the guide hole, A positioning pin 2 (16) corresponding to the positioning hole 2 is provided on the base (15).

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