CN209925378U - Pressing device - Google Patents

Abstract

The pressing device comprises a magnetic base and a pressing jig arranged at the top end of the magnetic base, wherein the magnetic base can selectively generate magnetic force, the pressing jig comprises a base frame and a pressing group, the base frame comprises a bearing plate arranged at the top end of the magnetic base and a cantilever positioned above the bearing plate at intervals, the pressing group can be connected to the cantilever in a vertically moving mode, and the pressing group can be operated to vertically move relative to the cantilever and can be positioned at a selected height position. The pressing group of the pressing jig and the bearing plate clamp the workpiece together, and the pressing group simultaneously provides pre-pressure to the heat dissipation part of the workpiece, so that an operator can be prevented from pressing the heat dissipation part with fingers, and the influence on health of the operator caused by the ultraviolet irradiation on the hand of the operator is prevented.

Description

Pressing device

Technical Field

The utility model relates to a suppression device especially relates to a suppression device for suppressing and centre gripping work piece.

Background

When the heat sink is assembled and fixed on a chip on a circuit board, an ultraviolet adhesive is coated on the top surface of the chip, and then the heat sink is attached to the ultraviolet adhesive. Then, the operator needs to press the heat sink downward with his fingers to provide pre-compression force to the heat sink. And then, the ultraviolet glue is cured by the ultraviolet rays irradiated by the ultraviolet irradiation head, so that the heat dissipation member can be adhered to the wafer after the ultraviolet glue is cured.

In the process of irradiating ultraviolet rays by the ultraviolet irradiation head, fingers of an operator need to continuously press the heat dissipation part until the ultraviolet glue is cured, and the fingers can not be released. Because the wafer and the heat dissipation member have small volumes, the ultraviolet rays can simultaneously irradiate fingers pressed on the heat dissipation member by an operator in the irradiation process, thereby influencing the health of the operator. Moreover, the heat dissipation member is pressed by fingers to provide pre-pressure, so that the heat dissipation member is prone to be skewed or offset due to uneven force application of the fingers of an operator, and the heat dissipation member is skewed or offset after the ultraviolet glue is cured.

SUMMERY OF THE UTILITY MODEL

An object of the present invention is to provide a pressing device capable of overcoming at least one of the drawbacks of the background art.

The utility model discloses an aim at and solve background technical problem adopt following technical scheme to realize, the foundation the utility model provides a suppression device, suppression device include the magnetic force seat and set up in the suppression tool on magnetic force seat top, the magnetic force seat can selectively produce magnetic force, the suppression tool includes bed frame and suppression group, the bed frame including set up in the loading board and the interval on magnetic force seat top are located the cantilever of loading board top, suppression group can connect with reciprocating in the cantilever, suppression group can be operated and for the cantilever reciprocates and can fix a position the high position of selection.

The utility model discloses a suppression device, suppression group spiro union in the cantilever can for the cantilever rotates and upwards or moves down.

The utility model discloses a suppression device, suppression group is including being located the loading board with suppression plane between the cantilever.

The utility model discloses a suppression device, the magnetic force seat includes bottom surface and control button, the control button is used for supplying the operation so that the magnetic force seat switches between magnetic state and non-magnetic state the state is inhaled to the magnetism, the bottom surface produces magnetic force.

The utility model discloses a suppression device, the cantilever is formed with the screw, suppression group including the spiro union in the double-screw bolt of screw.

The utility model discloses a suppression device, the suppression group still including set up in the double-screw bolt top just is located the knob of cantilever top.

The utility model discloses a suppression device, the suppression group still including set up in the double-screw bolt bottom just is located the loading board with presswork between the cantilever.

The utility model discloses a suppression device, the suppression tool still include with the loading board lock solid in the bolt of magnetic force seat.

The beneficial effects of the utility model reside in that: the pressing group of the pressing jig and the bearing plate clamp the workpiece together, and the pressing group simultaneously provides pre-pressure to the heat dissipation member, so that an operator can be prevented from pressing the heat dissipation member with fingers, and the influence on the health of the operator caused by the ultraviolet irradiation on the hand of the operator is prevented. Furthermore, the pressing piece can provide stable pre-pressure to the heat dissipation piece to enable the heat dissipation piece to move downwards in a mode of uniformly pressing the top surface of the heat dissipation piece downwards by the force applied by the pressing plane, so that the heat dissipation piece is prevented from being inclined or deviated in the downwards moving process. Therefore, after the ultraviolet glue is cured, the heat dissipation part can present a flat state without deflection and deviation.

Drawings

Fig. 1 is a perspective view of an embodiment of a pressing apparatus of the present invention;

FIG. 2 is an exploded perspective view of the embodiment, illustrating the assembly relationship between the magnetic base and the pressing fixture;

FIG. 3 is a fragmentary cross-sectional view of the embodiment illustrating the pedestal bolted to the cantilever through two bolts secured to the magnetic base and the studs of the hold-down assembly;

FIG. 4 is a fragmentary side view of the embodiment illustrating the carrier with the workpiece carried thereon placed on the carrier plate and the heat sink aligned below the pressing plane of the press; and

fig. 5 is a fragmentary side view of the embodiment illustrating the pressing plane of the pressing member pressing the heat sink.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and embodiments:

before the present invention is described in detail, it is noted that like elements are represented by like reference numerals throughout the following description.

Referring to fig. 1, an embodiment of the pressing apparatus 100 of the present invention, the pressing apparatus 100 includes a magnetic base 1 and a pressing fixture 2.

Referring to fig. 2, 3 and 4, the magnetic base 1 includes a bottom surface 11, a top surface 12 and a control button 13. The bottom surface 11 is used for being placed on a work platform (not shown) with magnetic permeability. The top surface 12 is concavely formed with two screw holes 121 spaced apart in the left-right direction Y. The control button 13 is used for the operator to rotate, so as to switch the magnetic base 1 between the magnetic attraction state and the non-magnetic attraction state. When the magnetic attraction state is in use, the bottom surface 11 generates magnetic force and can magnetically attract the working platform, so that the magnetic base 1 is fixed on the working platform. In the non-magnetic attraction state, the bottom surface 11 does not generate magnetic force, so that an operator can freely move the position of the magnetic base 1 on the working platform.

The pressing jig 2 includes a base frame 21, two bolts 22 and a pressing set 23. The base frame 21 includes a loading plate 211, a standing arm 212, and a cantilever 213. The carrier plate 211 is disposed on the top surface 12 of the magnetic base 1 and has two through holes 214 spaced apart from each other in the left-right direction Y, and each through hole 214 is a stepped hole communicated with the corresponding screw hole 121. Each bolt 22 is inserted through the corresponding through hole 214 and screwed into the corresponding screw hole 121, so as to lock the carrier plate 211 to the magnetic base 1. The standing arm 212 protrudes upward from the top surface of the supporting plate 211, and the standing arm 212 is adjacent to the rear end of the supporting plate 211 and located between the two through holes 214. The cantilever 213 protrudes forward from the front end of the upright arm 212 and is spaced above the carrier plate 211. The cantilever 213 is formed with a screw hole 215 adjacent to the front end, the screw hole 215 extending in the up-down direction Z.

The hold-down set 23 includes a stud 231, a knob 232, and a hold-down 233. The axial direction of the stud 231 extends in the up-down direction Z and is screwed into the screw hole 215 of the cantilever 213, thereby enabling the stud 231 to move up or down relative to the cantilever 213 in the up-down direction Z simultaneously during the rotation of the stud 231 relative to the cantilever 213. The knob 232 is fixedly disposed at the top end of the stud 231 and located above the cantilever 213 for the operator to rotate. The pressing member 233 is circular and has a screw hole 234 for screwing the stud 231, and the pressing member 233 is adjacent to the bottom end of the stud 231 and located between the bearing plate 211 and the cantilever 213 and has a pressing plane 235 facing downward.

Referring to fig. 4, a pressing apparatus 100 (shown in fig. 3) is used to press and hold a workpiece 3 to be cured. The workpiece 3 includes a circuit substrate 31, a wafer 32 disposed on the top surface of the circuit substrate 31, and a heat sink 33. The circuit substrate 31 is placed and positioned in the carriage 4. An uncured uv glue 34 is applied between the top surface of the wafer 32 and the bottom surface of the heat spreader 33.

Referring to fig. 4 and 5, to press and hold the workpiece 3 by the pressing device 100, the loading frame 4 is first placed on the top surface of the loading plate 211, so that the heat sink 33 is aligned below the pressing plane 235 of the pressing member 233. Subsequently, the knob 232 is rotated in the forward direction to rotate the pressing group 23 relative to the cantilever 213, and the pressing group 23 is simultaneously moved downward relative to the cantilever 213 during the rotation. When the pressing plane 235 of the pressing member 233 contacts the top surface of the heat sink 33 during the downward movement of the pressing unit 23, the heat sink 33 is pressed downward, and the uv glue 34 is compressed downward during the downward movement of the heat sink 33, so that the uv glue 34 can flow and spread outward to be spread between the wafer 32 and the heat sink 33 after being compressed. By means of the pressing member 233, the heat sink 33 can be stably pre-pressed downward by applying a force uniformly downward on the top surface of the heat sink 33 through the pressing plane 235, so as to prevent the heat sink 33 from being tilted or deviated during downward movement.

When the hold-down group 23 is moved down to the selected height position as shown in fig. 5, the rotation of the knob 232 is stopped. At this time, the pressing set 23 can be positioned at the selected height position by the connection relationship between the stud 231 and the screw hole 215, and the pressing set 23 and the carrier plate 211 cooperate to clamp the workpiece 3 and the carrier plate 4 together.

Referring to fig. 3 and 5, the control button 13 of the magnetic base 1 is rotated to switch the magnetic base 1 to the magnetic attraction state, so that the magnetic base 1 is fixed on the working platform. Thereafter, the position of the ultraviolet irradiation head 5 is adjusted so as to correspond to the workpiece 3. Subsequently, the workpiece 3 is irradiated with ultraviolet rays through the ultraviolet irradiation head 5 to cure the ultraviolet paste 34. After the uv glue 34 is cured, the heat spreader 33 is adhered to the wafer 32 by the uv glue 34. Then, the knob 232 is reversed to rotate the pressing set 23 relative to the suspension arm 213 and move upward relative to the suspension arm 213, so that the operator can remove the workpiece 3 and the carrier 4 from the pressing fixture 2 when the pressing plane 235 of the pressing member 233 moves away from the top surface of the heat sink 33.

Since the pressing group 23 and the carrier plate 211 clamp the workpiece 3 together during the process of irradiating the workpiece 3 with the ultraviolet rays by the ultraviolet irradiation head 5, and the pressing group 23 simultaneously provides the pre-pressure to the heat sink 33, the operator does not need to press the heat sink 33 with his fingers to provide the pre-pressure. Therefore, the influence of ultraviolet rays on the hands of the operator and the health of the operator can be prevented.

In summary, in the pressing device 100 of the present embodiment, the pressing group 23 of the pressing fixture 2 and the supporting plate 211 clamp the workpiece 3 together, and the pressing group 23 provides the pre-pressure to the heat sink 33 at the same time, so that the situation that the operator presses the heat sink 33 with his/her finger can be avoided, and the influence on the health of the operator due to the ultraviolet radiation on his/her hand can be prevented. Furthermore, the pressing member 233 applies force uniformly downward on the top surface of the heat sink 33 through the pressing plane 235, so as to provide stable pre-pressure to the heat sink 33 to move downward, thereby preventing the heat sink 33 from being tilted or deviated during downward movement. Therefore, after the ultraviolet glue 34 is cured, the heat sink 33 can present a flat state without deflection and offset, and the purpose of the utility model can be achieved.

Claims (8)

1. A pressing apparatus characterized by:

the pressing device comprises a magnetic base and a pressing jig arranged at the top end of the magnetic base, the magnetic base can selectively generate magnetic force, the pressing jig comprises a base frame and a pressing group, the base frame comprises a bearing plate arranged at the top end of the magnetic base and a cantilever arranged above the bearing plate at intervals, the pressing group can be connected to the cantilever in a vertically moving mode, and the pressing group can be operated to move vertically relative to the cantilever and can be positioned at a selected height position.

2. A press apparatus as claimed in claim 1, wherein: the pressing group is screwed to the cantilever and can rotate relative to the cantilever to move upwards or downwards.

3. A press apparatus as claimed in claim 1, wherein: the pressing group comprises a pressing plane located between the bearing plate and the cantilever.

4. A press apparatus as claimed in claim 1, wherein: the magnetic base comprises a bottom surface and a control button, wherein the control button is used for operating so as to enable the magnetic base to be switched between a magnetic attraction state and a non-magnetic attraction state, and the bottom surface generates the magnetic force in the magnetic attraction state.

5. The pressing apparatus according to any one of claims 1 to 4, wherein: the cantilever is formed with the screw, suppress the group including the spiro union in the double-screw bolt of screw.

6. The press apparatus of claim 5, wherein: the pressing group further comprises a knob which is arranged at the top end of the stud and positioned above the cantilever.

7. The press apparatus of claim 6, wherein: the pressing group further comprises a pressing piece arranged at the bottom end of the stud and located between the bearing plate and the cantilever.

8. A press apparatus as claimed in claim 1, wherein: the pressing jig further comprises a bolt for locking the bearing plate to the magnetic base.

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