KR20090092054A - Apparatus for transferring pcb - Google Patents

Abstract

A substrate transfer apparatus is provided to transfer substrates of various sizes by controlling a gap between a first supporting frame and a second supporting frame. A driving pulley(120) is rotatably installed in one side of a base frame(110). A driving part rotates the driving pulley. A driven pulley(130) is rotatably installed in the other side of the base frame. A transfer belt(140) connects the driving pulley to the driven pulley. A first supporting frame(150) is fixed to the transfer belt in order to support the substrate. A second supporting frame(160) is movably installed in the transfer belt in order to support the substrate. A gap control unit(170) moves the second supporting frame in order to the gap between the first supporting frame and the second supporting frame according to a size of the substrate.

Description

Substrate transfer device {Apparatus for transferring PCB}

The present invention relates to a substrate transfer apparatus, and more particularly, to a substrate transfer apparatus capable of transferring a substrate to a component mounting position and adjusting a width of a support frame according to the size of the substrate.

In general, a surface mounting apparatus capable of mounting a component on a printed circuit board includes a base frame, an X-Y gantry, a component adsorption apparatus, a substrate transfer apparatus, and a component supply apparatus. The X-Y gantry is assembled on the base frame and installed to be movable in the X-Y axis direction of the component adsorption device.

The parts adsorption device is assembled on the X-Y gantry and moves to mount the parts supplied through the parts supply device on the board. The substrate on which the component is mounted is transferred to the component mounting working position by the substrate transfer device.

Recently, a conventional substrate transfer apparatus using a ball screw has been disclosed.

1 and 2 are plan views illustrating the positional movement of the support frame of the conventional substrate transfer apparatus, and FIG. 3 is a plan view illustrating the width adjustment of the support frame of the conventional substrate transfer apparatus.

1 to 3, a conventional substrate transfer apparatus 10 is provided with a ball screw shaft 12 on a base frame 11, and a screw nut 13, 14 on the ball screw shaft 12. Through the first support frame 15 and the second support frame 16 is coupled.

The first drive unit 17 and the second drive unit 18 are provided in the first support frame 15 and the second support frame 16.

Briefly describing the operation of the conventional substrate transfer device configured as described above are as follows.

First, referring to FIGS. 1 and 2, the positional movement of the first and second support frames 15 and 16 of the conventional substrate transfer apparatus will be described.

In a state where the second drive unit 18 does not operate, the first drive unit 17 operates to rotate the ball screw shaft 12.

Accordingly, the first support frame 15 and the second support frame 16, which are coupled to the ball screw shaft 12 through the screw nuts 13 and 14, move while maintaining a constant width W. In this case, the screw nut 14 does not rotate because the second driving unit 18 is not driven.

Next, referring to FIG. 3, the width adjustment between the first and second support frames 110 will be described.

After the movement of the positions of the first and second support frames 15 and 16 is finished, the operation of the first driving unit 17 is stopped. Thus, the ball screw shaft 12 is fixed without being rotated.

In a state where the first support frame 15 is stopped, the second drive unit 18 operates to rotate the screw nut 14. By rotation of the screw nut 14, the second support frame 16 is moved along the ball screw shaft 12, thereby adjusting the width W ′ between the first and second support frames 110. do.

Thus, the conventional substrate transfer device 10 is the first and second support frame (15, 16) by the ball screw shaft 12 and the screw nut (13) 14 coupled to the ball screw shaft (12). By adjusting the position and width of the substrate, various sizes of substrate P are transferred to the component mounting position.

However, the conventional substrate transfer apparatus has a structure using a ball screw shaft and a screw nut coupled to the ball screw shaft, and the overall configuration is complicated, which makes the assembly process difficult and increases the manufacturing cost.

The present invention has been devised to solve the above-mentioned problems, by using a transfer belt connecting the pulleys and the pulleys, it is possible to transfer the substrate to a suitable position, as well as to stably and quickly transfer the substrate in a width suitable for the size of the substrate It is an object of the present invention to provide a substrate transfer apparatus that can be accurately transferred.

In order to achieve the above object, the substrate transfer apparatus of the present invention includes a base frame; A driving pulley rotatably installed at one side of the base frame; A driving unit for rotating the driving pulley; A driven pulley rotatably installed on the other side of the base frame at a predetermined distance from the driving pulley; A transfer belt connecting the driving pulley and the driven pulley; A first support frame fixed to the transfer belt to support a substrate; A second support frame movably installed on the transfer belt to support the substrate together with the first support frame; And a width adjusting unit for moving the second support frame to adjust the distance between the first support frame and the second support frame according to the size of the substrate.

The driving unit for rotating the driving pulley may be fixed to the base frame.

The width adjusting unit may include a moving roller on which the second support frame is supported and positioned to contact an outer surface of the transfer belt; A drive motor for rotating the moving roller; And a pair of tension rollers installed in close proximity to the moving roller in a state in which the moving roller contacts the inner surface of the transfer belt such that the moving roller contacts the transfer belt with a constant tension.

The moving roller may include a fixed shaft to which the second support frame is fixed, and a rotating part rotatably installed on an outer circumferential surface of the fixed shaft.

The fixed shaft formed at the center of the tension roller may be fixed to the drive motor.

The drive motor for rotating the moving roller is an outer type, the fixed shaft is made of a structure in which only the rotating portion is rotated without rotating.

A tooth protrusion is formed on an outer circumferential surface of the moving roller, and a tooth groove is formed on an outer side surface of the transfer belt in correspondence with the tooth protrusion. The first support frame may be bolted to the transfer belt.

As described above, according to the present invention, by using the transfer belt connecting the pulleys and the pulleys, it is possible to transfer the substrate to a suitable position, as well as to stably and accurately transfer the substrate to a width suitable for the size of the substrate. Can be.

1 and 2 are plan views illustrating the positional movement of the support frame of the conventional substrate transfer apparatus.

Figure 3 is a plan view for explaining the width adjustment of the support frame of the conventional substrate transfer apparatus

Figure 4 is a perspective view showing a substrate transfer apparatus according to an embodiment of the present invention

5 is a plan view showing the width adjustment unit of FIG.

6 is a side view showing the width adjustment unit of FIG.

7 and 8 are plan views illustrating positional movements of the first and second support frames of FIG. 4.

9 is a plan view illustrating width adjustment of FIG. 4.

10 is a plan view showing a substrate transfer apparatus according to another embodiment of the present invention

* Description of main parts

100: substrate transfer device

110: base frame

120: driven pulley

125: drive unit

130: driven pulley

140: transfer belt

P: Substrate

150: first support frame

160: second support frame

W, W ': Width

170: width adjustment unit

120a, 130a: fixed shaft

140: transfer belt

150: first support frame

160: second support frame

R: Information rail

171: moving roller

175: drive motor

177: tension roller

171a: fixed shaft

171b: rotating part

177a: fixed shaft

241: Chi Home

271c: tooth turning

277: tension roller

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

Figure 4 is a perspective view showing a substrate transfer apparatus according to an embodiment of the present invention, Figure 5 is a plan view showing the width adjustment unit of Figure 4, Figure 6 is a side view showing the width adjustment unit of Figure 4, Figure 7 and FIG. 8 is a plan view illustrating positional movement of the first and second support frames of FIG. 4, and FIG. 9 is a plan view illustrating width adjustment of FIG. 4.

4 to 9, the substrate transfer apparatus 100 of the present invention includes a base frame 110; A drive pulley 120 rotatably installed on one side of the base frame 110; A driving unit 125 for rotating the driving pulley 120; A driven pulley 130 rotatably installed at the other side of the base frame 110 at a predetermined distance from the driving pulley 120; A transfer belt 140 connecting the driving pulley 120 and the driven pulley 130; A first support frame 150 fixed to the transfer belt 140 to support the substrate P; A second support frame 160 movably installed on the transfer belt 140 to support the substrate P together with the first support frame 150; And moving the second support frame 160 to adjust an interval (width) W of the first support frame 150 and the second support frame 160 according to the size of the substrate P. The width adjusting unit 170 is configured.

More specifically, the base frame 110 is to support the first support frame 150 and the second support frame 160, the length is formed longer than the width.

The driving pulley 120 is rotatably installed at one end of the base frame 110 about the fixed shaft 120a. In response to the driving pulley 120, a driven pulley 130 is rotatably installed around the fixed shaft 130a at the other end of the base frame 110.

The driving pulley 120 is configured to be rotated by the driving unit 125 fixedly installed on the base frame 110.

 Although not shown in the drawing, the driving unit 125 for rotating the driving pulley 120 may be configured as a reducer, a plurality of gears or a timing belt.

The transfer belt 140 connects the driving pulley 120 and the driven pulley 130.

One side of the transfer belt 140 is fixed to the first support frame 150 for supporting the substrate (P). A fastening means for fixing the first support frame 150 to the transfer belt 140 may be a bolt or a rivet.

A second support frame 160 for supporting the substrate P is provided at a position corresponding to the first support frame 150.

The second support frame 160 is equilibrated to the same height as the first support frame 150 to stably transport the substrate P in a parallel state.

The first support frame 150 and the second support frame 160 are supported by the guide rails R and are installed to be smoothly transported.

In addition to transferring the substrate P to the component mounting position, it is necessary to adjust the distance (width) of the first support frame 150 and the second support frame 160 according to the size of the substrate P. In the present invention, the width adjusting unit 170 is provided for adjusting the width.

The width adjusting unit 170 may adjust the tension of the moving roller 171 on which the second support frame 160 is supported, the driving motor 175 for rotating the moving roller 171, and the transfer belt 140. It consists of a pair of tension rollers 177 which hold | maintain constant.

More specifically, the moving roller 171 is a fixed shaft 171a to which the second support frame 160 is fixed, and a rotating part 171b rotatably installed on an outer circumferential surface of the fixed shaft 171a. Consists of.

The rotating part 171b of the moving roller 171 is positioned to contact the outer side surface of the transfer belt 140 and is configured to be rotated by the driving motor 175.

The drive motor 175 for rotating the moving roller 171 is an outer rotor type, and as is known, has a structure in which the rotor is located on the outer circumference of the stator. Since the structure of the outer rotor is a known technique, a detailed description thereof will be omitted below.

The pair of tension rollers 177 are installed in close proximity to the moving roller 171 in contact with the inner surface of the transfer belt 140, and the moving roller 171 and the transfer belt 140 are It serves to be in close contact with a certain tension.

The fixed shaft 177a of the tension rollers 177 is not fixed through the mounting bracket B, but is fixed to the casing 175 '(not rotating) of the drive motor 175.

In other words, in order to adjust the width while the first support frame 150 moves, the fixed shaft 171a of the moving roller 171 and the fixed shaft 177a of the tension rollers 177 are not rotated.

The rotating part 171b of the moving roller 171 is rotated by the drive motor 175 of the outer rotor type, and the fixed shaft 177a of the tension rollers 177 is a casing of the drive motor 175. It is fixed at 175 'through a mounting bracket (B).

Therefore, when the moving roller 171 is rotated in contact with the transfer belt 140, the moving roller 171 as well as the tension rollers 177, the driving motor 175, and the first support frame 150. ) Is moved.

In the present invention, a structure in which the driving motor 175 is installed below the moving roller 171 is described. However, the driving motor 175 may be installed above the moving roller 171 according to design conditions. .

Hereinafter will be described the operation of the substrate transfer apparatus according to an embodiment of the present invention.

First, the positional movement of the first and second support frames 150 and 160 will be described.

The driving motor 175 is not driven and the first support frame 150 and the second support frame 160 support the substrate P in a stopped state.

When the first support frame 150 and the second support frame 160 support the substrate P, and the substrate P is to be transferred to a predetermined position, the driving unit 125 is first moved. Drive.

The driving pulley 120 is rotated about the fixed shaft 120a by the driving unit 125, and the driven pulley 130 is rotated in association with the driving shaft 125.

At this time, the transfer belt 140 connecting the driving pulley 120 and the driven pulley 130 is moved. Due to the movement of the conveyance belt 140, the second support frame 160 installed on the conveyance belt 140 as well as the first support frame 150 fixed to the conveyance belt 140 may move the substrate P. Transfer to a predetermined position. At this time, the width W of the first support frame 150 and the second support frame 160 is kept constant.

Hereinafter, the width control between the first support frame and the second support frame will be described.

The driving unit 125 is not driven and the transfer belt 140 is stopped. In this state, the drive motor 175 is driven to rotate the moving roller 171.

While the rotating part 171b of the moving roller 171 is rotated by the drive motor 175, the fixed shaft 171a maintains the state fixed to the second support frame 160.

By the contact between the rotating part 171b of the moving roller 171 and the transfer belt 140, the moving roller 171 moves on the transfer belt 140.

At this time, the tension roller 177 serves to bring the rotary part 171b of the moving roller 171 in close contact with the transfer belt 140.

As the moving roller 171 is transported on the conveyance belt 140, the second support frame 160 is moved, so that the width W between the first support frame 150 and the second support frame 160 is increased. ') Can be adjusted appropriately. By this width adjustment, it is possible to transfer the substrate P of various sizes.

On the other hand, Figure 10 is a plan view showing a substrate transfer apparatus according to another embodiment of the present invention.

Referring to FIG. 10, in the substrate transport apparatus 200 according to another exemplary embodiment, a tooth protrusion 271c is formed on an outer circumferential surface of the moving roller 271, and corresponds to the tooth protrusion 271c. A tooth groove 241 is formed at an outer side surface of the transfer belt 240.

The pair of tension rollers 277 maintains the tension of the transfer belt 240 at a position in close proximity to the moving roller 271.

As such, when the tooth protrusions 271c and the tooth grooves 241 are formed, the power transmission efficiency is increased, so that the width adjustment can be performed more precisely and quickly.

As described above, in the detailed description of the present invention has been described with respect to preferred embodiments of the present invention, those skilled in the art to which the present invention pertains various modifications can be made without departing from the scope of the present invention Of course.

Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined not only by the claims below, but also by the equivalents of the claims.

Claims (8)

Base frame; A driving pulley rotatably installed at one side of the base frame; A driving unit for rotating the driving pulley; A driven pulley rotatably installed on the other side of the base frame at a predetermined distance from the driving pulley; A transfer belt connecting the driving pulley and the driven pulley; A first support frame fixed to the transfer belt to support a substrate; A second support frame movably installed on the transfer belt to support the substrate together with the first support frame; And And a width adjusting unit configured to move the second support frame to adjust the distance between the first support frame and the second support frame according to the size of the substrate. The method of claim 1, And the driving unit is installed in the base frame. The method of claim 1, The width adjusting unit may include a moving roller on which the second support frame is supported and positioned to contact an outer surface of the transfer belt; A drive motor for rotating the moving roller; And And a pair of tension rollers installed in close proximity to the moving roller in contact with the inner surface of the transfer belt such that the moving roller contacts the transfer belt with a constant tension. The method of claim 3, wherein The moving roller is a substrate transport apparatus, characterized in that consisting of a fixed shaft to which the second support frame is fixed, and a rotating portion rotatably installed on the outer peripheral surface of the fixed shaft. The method of claim 3, wherein And a fixed shaft formed at the center of the tension roller is fixed to the drive motor. The method of claim 3, wherein And said drive motor for rotating said moving roller is an outer type. The method of claim 3, wherein And a tooth protrusion is formed on an outer circumferential surface of the moving roller, and a tooth groove is formed on an outer surface of the transfer belt in correspondence with the tooth protrusion. The method of claim 1, And the first support frame is bolted to the transfer belt.