KR101648456B1

KR101648456B1 - Device for pressing in bush

Info

Publication number: KR101648456B1
Application number: KR1020150163189A
Authority: KR
Inventors: 박정근
Original assignee: 박정근
Priority date: 2015-11-20
Filing date: 2015-11-20
Publication date: 2016-08-16

Abstract

The present invention relates to a transfer workbench which is provided so as to be able to move between an anchoring position where a bushing having a plurality of bush holes are placed and a press-in position at which a bush is pressed into the bush holes through a linear reciprocating motion; A plurality of guide pin assemblies provided on the transfer table and having a guide pin inserted into the bush holes at an upper end thereof and supporting the bush assembly when the guide pins are inserted into the bush holes; And a press-in block for dropping and press-fitting the bush from the press-in position to the bush holes. Wherein the press-fit block includes: an upper plate provided to be raised and lowered at the upper portion of the press-in position and having a plurality of upper side drop holes connected to the plurality of bush supply pipes; And a lower bush drop hole having a plurality of lower bush drop holes, the upper bush hole and the lower bush hole being communicated with each other so as to be in parallel with the upper side plate, A lower plate coupled to the lower plate; And a plurality of load cells coupled to the lower plate so as to be positioned adjacent to the lower bush drop holes and press-fitting the bush into the bush holes when the upper plate is lowered at the closed position, Lt; / RTI >

Description

[0001] DESCRIPTION [0002] DEVICE FOR PRESSING IN BUSH [0003]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bush presser, and more particularly, to a bush presser for press-inserting a plurality of bushes into the same bush hole simultaneously with a plurality of bush holes provided in a bush assembly.

Currently, bushes are used as parts of various machines for various purposes. These bushes are installed in such a manner that they are press-fitted into the bush holes provided in the bush assembly. Therefore, the work of fastening the bush to the bush assembly requires a very large force. Therefore, the bush press-in apparatus is used for the bush press-in operation.

One example of the above-described bush-press fitting device is disclosed in Japanese Patent Laid-Open No. 10-2012-0111160 (Portable bush indenter), Japanese Patent Application Laid-Open No. 10-2014-0055454 (Bush Intrusion Device) and 10-1433061 (Bush Intrusion Device) . However, according to the bush-press fitting apparatuses of these patents and registered patents, only one bush can be fastened to the bush assembly. Therefore, when a plurality of bushes are to be fastened to the bush-coupled body, the bush fastening operation is very troublesome and requires much time and effort.

Among today's bushed assemblies there are many that have a plurality of bush holes into which the bushings can be press-fit. For example, in a mission case for a vehicle, 10 to 20 bush holes are provided along the rim of the mission case, depending on the size thereof. However, if the above-described conventional bush press-fitting apparatuses are used to fasten the bush to the bush joint such as the mission case, there is a problem that the same operation is repeated several times in order to fasten a plurality of bushes to one bush joint, A plurality of bushes may be fastened to different bushings by different bushings, resulting in poor work quality.

Open Patent 10-2012-0111160 (portable bush indenter) Open No. 10-2014-0055454 (Bush Intrusion Apparatus) Registration No. 10-1433061 (Bush press-fitting device)

Therefore, the present invention is to provide a bush-press fitting apparatus capable of press-fitting a plurality of bushes into the same bush hole simultaneously with the same bush holes at the same time.

The bush press-fitting apparatus also includes a bush dropping module installed on a fixed support plate located above the press-fitting block and dropping the bush supplied from the bush feeder to the plurality of bush supply pipes. The bush dropping module includes a fixed block fixed to the fixed support plate and having a plurality of bush drop holes connected to the plurality of bush supply pipes; And a plurality of bushes connected to the fixed block such that the bushes supplied from the bush feeder are aligned in a line in the aligned position, And a sliding block for positioning the bushes at the entrance of the plurality of bush dropping holes.

The bush drop holes of the fixed block are arranged in a zigzag manner in two rows, and the slide blocks are alternately provided with shallow grooves pushing out some of the bushes aligned in a row and deep grooves pushing the rest later.

The sliding block is provided with a plurality of sensors for detecting the presence or absence of each of the bushes.

The guide pin is provided so as to be able to move up and down, and is adapted to receive an elastic force in a direction of being raised by a spring.

According to the present invention, a plurality of bushes can be simultaneously press-fitted into the same bush holes with a plurality of bush holes provided in the bush combination, and the pressure input applied to each of the bushes can be measured.

Further, according to the present invention, the bushes supplied from the bush feeder can be provided at a time with the plurality of bush holes after being aligned by the bush dropping module, and miniaturization of the bush dropping module can also be realized.

In addition, according to the present invention, it is possible to easily confirm whether the bushes supplied from the bush feeder are properly aligned with the bush dropping module.

1 is a perspective view showing a bush-pushing apparatus according to the present invention.
2 is an exploded perspective view showing the press-fitting block of the bush-pusher shown in Fig.
3 is a bottom perspective view of the press-fit block shown in Fig.
4 is a cross-sectional view showing a process in which a bush is press-fitted.
5 is a perspective view showing a bush dropping module of the bush-pusher shown in Fig.

Best Mode for Carrying Out the Invention Preferred embodiments of the bush presser according to the present invention will be described below in detail with reference to the drawings. It is to be understood that the terminology or words used herein are not to be construed in an ordinary sense or a dictionary, and that the inventor can properly define the concept of a term to describe its invention in the best possible way And should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention.

The bush press apparatus 100 according to the present invention includes a transfer work table 110, a plurality of guide pin assemblies 120, and a press block 130 as shown in FIGS.

The transfer table 110 is installed on the base 102 so that the transfer table 110 can be moved between the position of the maximum forward position and the press-in position of the maximum backward position through a linear reciprocating motion. To this end, the transfer platform 110 is slidably engaged with a pair of rails 112 provided on the base 102. A cylinder rod of a pneumatic cylinder 114 provided on the base 102 is fixed to the transfer table 110. Accordingly, when the pneumatic cylinder 114 is operated, the transfer work table 110 performs a linear reciprocating motion and moves between the retracted position and the press-fit position. The position of the seat is a position where the bush joint 10 having a plurality of bush holes 12 (see Fig. 4) is placed, and the bush 20 (see Fig. 4) It is the position to be press-fitted. For reference, FIG. 1 shows the transfer workbench 110 placed in the retracted position.

The plurality of guide pin assemblies 120 are for supporting the bush assembly 10 and guide the bush 20 to the bush hole 12. The guide pins assembly 120 includes a column 124, A guide pin 122, and a spring 126. As shown in Fig.

The lower end of the column 124 is fixed to the transfer table 120, and the upper end of the column 124 is provided with a hole and a latching jaw. The spring 126 is embedded in the column 124 and exerts an elastic force in a direction of raising the guide pin 122. The lower end of the guide pin 122 is located inside the column 124 and abuts the upper end of the spring 126. Therefore, the guide pin 122 is always urged in the upward direction, but is not separated from the column 124 by being caught by the latching jaw at the upper end of the column 124. Further, the guide pin 122 passes through the hole at the upper end of the column 124 and protrudes upward from the column 124.

When the guide pin assembly 120 supports the bush assembly 10 as shown in Fig. 1, the guide pin 122 is inserted into the bush hole 12 of the bush assembly 10 And the bush joint 10 is supported by the upper end of the pillar 124. As shown in Fig.

The press-fitting block 130 is for dropping and press-fitting the bush 20 into the bush holes 12 of the bush assembly 10 at the press-in position, and as shown in Figs. 2 and 3, the upper plate 132 ), A lower side plate 136, and a plurality of load cells 140.

The upper side plate 132 is provided to move up and down at the upper portion of the press-in position. To this end, the upper side plate 132 is slidably engaged with guiders 106 fixed in a standing posture on the base 102. [ In addition, the upper side plate 132 has a plurality of upper bush drop holes (not shown), which are connected to a plurality of bush supply pipes 132a, respectively. Therefore, the bush 20 falling along the bush supply pipes 132a flows into the upper side bush drop holes. The cylinder rod of the hydraulic cylinder 135 is fixed to the upper side plate 132. Therefore, when the hydraulic cylinder 135 is operated, the upper side plate 132 is moved up and down along the guiders 106. The hydraulic cylinder 135 is installed on a fixed support plate 104 fixed to the upper end of the guider 106 so as to be positioned above the upper side plate 132.

The lower side plate 136 is coupled with the upper side plate 132 so as to perform a linear reciprocating motion in the left-right direction. To this end, rails 136b are provided at the front and rear ends of the lower side plate 136, and the rails 136b are supported by wheels 134a. The wheels 134a are coupled to vanes 134 provided at the front and rear ends of the upper side plate 132. [ A rod of the pneumatic cylinder 138 is fixed to the right end of the lower side plate 136. Therefore, when the pneumatic cylinder 138 is operated, the lower side plate 136 moves parallel to the upper side plate 132 and moves between the open position, which is the maximum positive position, and the closed position, which is the maximum turn position. The pneumatic cylinder 138 is installed on a bracket 132b fixed to the right end of the upper side plate 132 and a stopper 132c is fixed to the left end of the upper side plate 132. [

The lower plate 136 has a plurality of lower bush drop holes 136a. When the lower side plate 136 is in the open position, the lower side bush drop holes 136a communicate with the upper side bush drop holes of the upper side plate 132 to open the upper side bush drop holes and the lower side plate 136 is closed , It does not communicate with the upper side bush drop holes, thereby sealing the upper side bush drop holes. Thus, the bush 20, which has flowed into the upper side bush drop holes, is dropped from the open position through the lower bush drop holes 136a, and then is inserted into the guide pin 122 as shown in Fig. 4 (a) . On the other hand, the bush 20, which has flowed into the upper side bush drop holes, is blocked by the lower side plate 136 in the closed position.

A plurality of load cells 140 are also mounted on the lower side plate 136. These load cells 140 are all located to the right from the lower bush drop holes 136a. And the load cells 140 are located vertically above the guide pins 122 that are in the press-in position in the closed position. When the upper side plate 132 descends in this state, the load cell 140 pushes the bush 20 fitted in the guide pin 122 into the bush hole 12 as shown in FIG. 4, And outputs it as an electrical signal. During this press-fitting of the bush 20, the guide pin 122 is lowered while pushed together with the bush 20 as shown in Fig.

The bush presser 100 according to the present invention also includes a bush drop module 150 for simultaneously dropping the bushes 20 supplied from the bush feeder 30 to the bush supply pipes 132a.

The bush drop module 150 includes a fixed block 152 and a slip block 154 as shown in FIG. The fixed block 152 is fixed to the fixed support plate 104 on the upper side of the press-fit block 130. Further, the fixed block 152 has a plurality of bush dropping holes 152a, which are connected to the bush supply pipes 132a. Therefore, the bushes 20 introduced into the bush dropping holes 152a fall along the bush supply pipes 132a, and then flow into the upper bush dropping holes of the press-fitting block 130. [

The slip block 154 includes a "? &Quot; block 156 and a"? &Quot; The "?" Block 156 is coupled with the fixed block 152 to make a linear reciprocating motion in the anteroposterior direction. The rod of the pneumatic cylinder 155 is fixed to the rear end of the "? " Therefore, when the pneumatic cylinder 155 is operated, the "C" block 156 moves between the fall position, which is the maximum advance position, and the alignment position, which is the maximum reverse position, on the upper surface of the fixed block 152. On the other hand, the pneumatic cylinder 155 is installed on a vertical plate fixed to the fixed support plate 104.

The "a" -block 158 is fixed to the " b "-block 156 at a distance from the " When the bush 20 is supplied from the feeder 30, the bushes 20 are aligned in a line between the two blocks 158 and 156. At this time, there may occur a situation where a part of the busses 20 to be aligned in a line are missing or displaced, so that a photo sensor (not shown) connected to the wire 158a is connected to the " Are arranged in a row. Thus, by monitoring the output of the photosensor, it can be determined whether the bushes 20 are in place.

When the bushes 20 are aligned in a line and the slide block 154 pushes the bushes 20 forward to reach the dropping position, the bushes 20 are moved to the entrance of the bush drop holes 152a So that the bushes 20 flow into the bush drop holes 152a at the dropping position.

In the bush dropping module 150, the bush dropping bores 152a may be arranged in a row, or may be arranged in two rows and zigzag, as shown in FIG. However, since the width of the bush dropping module 150 becomes smaller when the bush dropping holes 152a are arranged in a zigzag manner than when the bush dropping holes 152a are arranged in a row, the bush dropping holes 152a are preferably arranged in a staggered manner.

When the bush dropping holes 152a are arranged in zigzags, the shallow grooves 156a and the deep grooves 156b are alternately provided in the "? " Then, while the sliding block 154 moves from the alignment position to the drop position, some of the plurality of bushes 20 aligned in a line (e.g., odd numbered bushes) are pushed first by the shallow grooves 156a (For example, even-numbered bushes) reach the entrance of the front heating bush drop holes 152a after passing through the rear heating bush drop holes 152a and are advanced by being pushed later by the deep grooves 156b, And reaches the entrance of the bush drop holes 152a.

Hereinafter, the operation of the bush-press fitting apparatus 100 will be described.

First, the robot arm (not shown) places the bush assembly 10, which has undergone the previous process, in the guide pin assemblies 120 of the transfer table 110 in the position of the guide, (122) are inserted into the bush holes (12) of the bush assembly (10). Then, the transfer table 110 transfers the bush assembly 10 to the press-in position.

During the above process, the bushes 20 supplied from the bush feeder 30 fall into the bush supply pipes 132a by the bush dropping module 150 and flow into the upper bush drops of the press-fitting block 130 . At this time, the lower plate 136 of the press-fitting block 130 is in the closed position, so that the bushes 20 of the upper bush drop holes can not enter the lower bush drop holes 136a.

After this process has been performed, the press-fitting block 130 is lowered to a position just above the guide pins 122. The lower plate 136 of the press block 130 then moves to the open position so that the bushes 20 of the upper bush drop holes pass through the lower bush drop holes 136a and are inserted into the guide pins 122 do. Thereafter, the lower side plate 136 is again moved to the closed position, so that the load cells 140 of the lower side plate 136 are positioned above the guide pins 122. Thereafter, the press-fitting block 130 is lowered secondarily. At this time, the load cells 140 push the bushes 20 into the bush holes 12 of the bush assembly 10 and output the pressure input as an electrical signal.

When the press-fitting of the bushes 20 is completed, the press-fitting block 130 is lifted and the transfer workbench 110 is advanced to the retracted position. Thereafter, another robot arm (not shown) grasps the bush assembly 10 and transfers the bush assembly 10 to a device for subsequent processing.

While the present invention has been described with reference to the exemplary embodiments and the drawings, it is to be understood that the present invention is not limited thereto and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. It is to be understood that various changes and modifications may be made without departing from the scope of the appended claims.

100: Bush pusher 102: Base
104: fixed support plate 106: guider
110: transfer table 120: guide pin assembly
122: guide pin 124: pillar
126: spring 130: press-fit block
132: upper side plate 132a: bush supply pipe
134: wing 134a: wheel
136: lower side plate 136a: lower side bush dropper
140: load cell 150: bush drop module
152: fixed block 152a: bush dropper
154: Sliding block 156: "
156a: shallow groove 156b: deep groove
158: "a" block 158a: photosensor wire
10: bush assembly 12: bush hole
20: Bush 30: Bush feeder

Claims

A transfer work table provided so as to be able to go through a linear reciprocating motion between an inserting position where a bushing having a plurality of bush holes are placed and a press fitting position where a bush is pressed into the bush holes;
A plurality of guide pin assemblies provided on the transfer table and having a guide pin inserted into the bush holes at an upper end thereof and supporting the bush assembly when the guide pins are inserted into the bush holes; And
And a press-in block for dropping and press-fitting the bush from the press-in position to the bush holes,
The press-
An upper side plate provided above and below the press-in position and having a plurality of upper side drop holes connected to the plurality of bush supply pipes respectively;
And a lower bush drop hole having a plurality of lower bush drop holes, the upper bush hole and the lower bush hole being communicated with each other so as to be in parallel with the upper side plate, A lower plate coupled to the lower plate; And
A plurality of load cells coupled to the lower plate so as to be positioned adjacent to the lower bush drop holes and press-fitting the bush into the bush holes when the upper plate is lowered at the closed position and sensing the pressure input; The bush indenting device comprising:

The method according to claim 1,
And a bush dropping module installed on a fixed support plate located above the press block to drop the bush supplied from the bush feeder to the plurality of bush supply pipes,
The bush dropping module includes:
A fixed block fixed to the fixed support plate and having a plurality of bush drop holes connected to the plurality of bush supply pipes; And
The bushes supplied from the bush feeder are aligned in a line in the alignment position, and the bushes aligned in the bush feeder are aligned in the dropping position, And a sliding block for placing the plurality of bush dropping holes at the entrance of the plurality of bush dropping holes.

3. The method of claim 2,
The bush dropping holes of the fixed block are arranged in a zigzag manner in two rows, and the slide block is provided with alternately provided shallow grooves pushing out a part of the bushes aligned in a row and deep grooves pushing the remainder later, .

3. The method of claim 2,
Wherein the sliding block is provided with a plurality of sensors for detecting the presence or absence of each of the bushes.

The method according to claim 1,
Wherein the guide pin is provided so as to be movable up and down, and is provided to receive an elastic force in a direction of being raised by a spring.