KR200354557Y1 - A space control apparatus of side conboyer for scrn printing - Google Patents

Abstract

The present invention relates to a mask guide width adjusting device of the screen printer that can be fixed to the mask width by translating the mask guide quickly and conveniently.

The mask guide width adjusting device of the present invention is provided with a mask guide on both sides of a substantially 'ㅗ' shape on a shear surface coupled to a guide bushing slidably coupled to a transversely installed guide rod. In the screen printer structured to be able to fix both sides of the frame of the mask, the plunger is in contact with the bottom surface of the transverse plate disposed transversely on the upper side of the mask guide on both sides of the mask guide to act as a friction force At least one cylinder is attached, it is characterized in that the switch for adjusting the operation of the cylinder is mounted on both mask guides configured to move the mask guide in the transverse state while pressing the switch.

Description

Mask guide width control device of screen printer {A space control apparatus of side conboyer for scrn printing}

The present invention relates to a screen width adjusting device (also called a stencil) guide of a screen printer. More specifically, the width of the mask guide width of a screen printer that can be fixed to the width of the mask by moving the mask guides horizontally and conveniently It relates to a control device.

With the development of the semiconductor industry, printed circuit boards are mainly produced by surface mount (SMT) processes.

The screen printer related to the present invention is a soldering pretreatment operation of a printed circuit board for the above-described SMT process, and a cream solder type lead is formed on a peeled solder surface of a circuit pattern to solder various components such as an integrated circuit device, a resistor and a capacitor. It is equipment to apply.

Referring to Figures 1 and 2 showing the front and rear surfaces (it is difficult to define the front and rear, but for convenience) before and after the general design of the screen printer equipment, the reference numeral 10 denotes a printed circuit board ( Input side conveyor which inputs PCB) and transfers it to the working position. Reference numeral 20 denotes a squeeze part for pushing the cream solder type lead on the mask, and reference numeral 30 denotes the lower surface of the mask after screen printing is completed. A cleaner part to be cleaned, and reference numeral 40 denotes a working position in which a work plate and a work conveyor are positioned, and a mask (also referred to as a stainless seal) 42 is mounted on a mask guide positioned at an upper portion thereof.

The screen printer moves the printed circuit board (PCB) by the input side side conveyor (10) to the upper part of the work plate equipped with the work conveyor of the central work position 40, and then displays the recognition mark and mask displayed on the printed circuit board ( 42) The recognition mark displayed on the camera is recognized by a camera (not shown) to accurately align the solder faces on the printed circuit board (PCB) and the countless lead holes drilled in the mask 42 correspondingly, and then the work conveyor is After raising, the mask 42 and the squeeze are lowered to bring the mask and the printed circuit board into close contact with each other, and then the lead placed on the mask 42 is pushed on the mask 42 by moving the blade of the squeeze 20 forward and backward to the mask 42. The lead can be applied to the solder surface on the PCB by passing through the lead inlet on the printed circuit board, and then the printed circuit board with lead is applied from the central conveyor. It is conveyed to the discharge side of the conveyor located opposite the side Id conveyor 10 to be discharged.

In the screen printer having the above-described configuration, a conventional method of adjusting the width of the mask guide 2 as compared with the present invention is described.

Conventionally, the apparatus for adjusting the width of both mask guides 52 positioned on the upper side of the work conveyor to the width of the mask 42 is in close contact with the mask guides 52 which are slid and moved transversely to both ends of the mask 42. It was made of a configuration that can be fixed to the bar because of the process of loosening and tightening the clamp and the work has a disadvantage that the work labor and inconvenience, and takes a lot of time.

The present invention devised to solve the above-mentioned problems is an object of the present invention to provide a mask guide width adjusting device for easily and quickly the transverse movement and fixing of the mask guide for holding and holding the mask on both sides of the mask. .

1 is a perspective view showing the front of a typical screen printer

Figure 2 is a perspective view showing the back of the screen printer to which the present invention is applied

Figure 3 is a plan view of the main part showing the present invention of the screen printer

4 is a cross-sectional view taken along the line a-a of FIG.

Explanation of symbols on the main parts of the drawings

42-Mask Mask Guide 52-Mask Guide

56-Side Plate 58-Long Hole

59-Bottom Plate 62-Guide Rod

64-guide bushing 72-cylinder

72a-Plunger 74-Switch

The present invention for achieving the above object

Two side mask guides of approximately 'ㅗ' shape are provided on the shear surface coupled to the guide bushing slidably coupled to the transversely installed guide rods to fix both sides of the frame of the mask by placing the mask on top of the fixed printed board. In the screen printer structured to be able to, wherein both mask guides are attached to at least one cylinder folds a frictional force to the bottom surface of the transverse plate disposed transversely disposed on the upper side of the two mask guides, respectively, A switch for adjusting the operation of the cylinder is mounted to the mask guides on both sides of the mask guide width adjustment device of the screen printer, characterized in that configured to move in the transverse direction of the mask guide while pressing the switch.

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

Figure 2 is a perspective view showing the back of the screen printer to which the present invention is applied, Figure 3 is a plan view of the main portion showing the present invention of the screen printer, Figure 4 is a cross-sectional view taken a-a line of FIG.

2 to 4, the upper surface of the work plate 40, the mask 42 is placed on top of the printed substrate fixed in position so that both sides of the frame of the mask 42 can be fixed approximately '전단' Both side mask guides 52 are provided.

2 to 3, the mask guide 52 is coupled to a guide bushing 64 slidably coupled to the transversely installed guide rod 62.

3 to 4, as a feature of the present invention, the mask guide 52 has a plunger 72a on the bottom surface of the transverse plate 56 disposed transversely on the upper side of the mask guide 52, respectively. And at least one cylinder 72 is applied which exerts a frictional force. Preferably, two may be mounted one before and after the mask guide 52. The cylinder 72 uses a double-acting pneumatic cylinder, and may alternatively use hydraulic and electric cylinders.

Both side mask guides 52 are equipped with a switch for adjusting the operation of the cylinder 72, while the plunger 72a of the cylinder 72 is reduced while the switch 74 is pressed to traverse the mask guide 52. Allow it to move

The lower surface of the transverse plate 56 is preferably formed with a long hole 58 into which the plunger 72a of the cylinder 72 is inserted to allow the plunger 72a to be guided by the long hole 58.

Referring to FIG. 4, the mask guide 52 is disposed above the bottom plate 59 of the screen printer, and when the plunger 72a is extended by the operation of the cylinder 72, the bottom surface of the body of the cylinder 72 is downward. The mask guide 52 is pushed against the bottom plate 59 to double the holding force.

Referring to the operation of the present invention configured as described above are as follows.

When the operator wants to move the mask guide 52 to match the width of both sides of the mask 42, the mask guide 52 can be moved in the transverse direction to match the mask width 42 while pressing the switch 74.

That is, since the plunger 72a of the cylinder 72 is sucked and reduced in the state which pressed the switch 74, the upper end part of the plunger 72a does not contact with the bottom face of the horizontal plate 56, and is spaced apart, and guides bushings. By 64, the mask guide 52 coupled to the guide rod 62 so as to be slidable can be moved laterally.

In this way, when the mask 74 is moved while the switch 74 is pressed to release the switch 74 while the width is adjusted, the plunger 72a of the cylinder is extended, and the end of the plunger 72a is opened. ) The movement of the mask guide 52 is restricted by being in close contact with the bottom of the transverse plate 56.

As described above, the mask guides 52 positioned on both sides of the mask guides 52 are transversely moved to perform a desired screen printing process after the mask 42 is seated.

As described above, the present invention can quickly and easily perform horizontal movement and fixation of the mask guide holding and holding the mask on both sides of the mask while pressing the switch, thereby reducing work effort and working time. .

Claims (3)

Both sides of the mask guides of approximately 'ㅗ' shape are provided on the cross-sectional guide rods slidably coupled to the guide rods installed in a transverse direction. In the screen printer structured so that, each of the mask guides are attached to at least one cylinder folds the frictional force is applied to the bottom surface of the transverse plate disposed transversely on the upper side of the mask guide, respectively, the cylinder A switch for adjusting the operation of the mask guide width adjusting device of the screen printer, characterized in that the mask guide is mounted on both sides of the mask guide configured to move the mask guide while holding the switch. The mask guide width adjusting apparatus of claim 1, wherein a long hole into which the plunger of the cylinder is inserted is formed at a bottom of the horizontal plate. The screen printer according to claim 1, wherein the mask guide is disposed on the bottom plate, and the bottom surface of the cylinder is pushed downward when the plunger is extended by the operation of the cylinder, so that the mask guide is in close contact with the bottom plate. Mask guide width adjuster.