JP3222371U - hot press - Google Patents

Abstract

A hot press capable of accurately controlling the amount of thermal pressure is provided. A pressurizing component and a welding head component attached to the pressurizing component are included. The welding head part includes a welding head 21, and the pressure part includes a voice coil motor 11. The voice coil motor includes a stator 111 and a mover 112 that can be linearly displaced with respect to the stator. The welding head component is relatively fixed to the mover, and the linear displacement direction of the mover is the same as the moving direction of the welding head, and the center of the welding head is arranged concentrically with the coil of the voice coil motor. Yes. Through controlling the circuit, the welding head drives the voice coil motor to output the propulsion pressure, and the mover directly provides the pressure and moving distance necessary for the hot pressing operation of the welding head. [Selection] Figure 3

Description

  The present invention provides a structural improvement of a hot press, in particular, a hot press in which the amount of heat pressure can be precisely controlled.

  In recent years, the volume of various electronic products has become increasingly smaller, thinner and curved, and the assembly operation between the associated microcircuit board and the microelectronic component is different from the conventional welding process. Responding to the needs of the new era welding operations, how quickly, accurately and stably the welding process is a matter that the industry must overcome.

Related equipment of the conventional hot press welding technology is described in Patent Document 1 "Improvement of hot press module and high-speed hot press apparatus applied thereto".
However, in addition to the technology of providing a heat source, when applied to a more advanced processing industry, the pressure control in the hot pressing process has to be further improved.

Furthermore, in addition to providing a heat source, compression is also a very important task. In the state of the art in the hot press industry, a power source is provided by a servomotor to control the extremely small forces that provide the combined pressure of the product.
The principle of operation of the servomotor is to rotate the screw by means of the transmission gear part (e.g. coupling, gear, belt etc) associated with the motor shaft to control the screw related mechanism to carry out the correct displacement. In other words, instead of directly controlling the pressure of the hot pressing operation, the propulsion stroke of the related mechanism is controlled through the number of rotations of the screw.
It is first necessary to calculate these steps accurately. In addition to errors in the processing and assembly of screws, it is also difficult to master the optical scale, in addition to the difficulty in understanding the errors.
However, the yield is currently a bottleneck, and the main problem is that the heated solder is in a liquid state, and there are problems such as temperature differential expansion ratio in addition to surface tension. In other words, servomotors can provide accurate propulsion distances, and it is not difficult to achieve μm level accuracy under accurate calibration of servomotors and optical scales with the most precise number of divisions, In the case of continuous rapid mass processing, the height of the liquid solder in each different workpiece may be different.
The moving distance of the workpiece fixing mechanism may also decrease, and heat is given to the tin when the hot head approaches the product, and when the tin melts and becomes liquid, its height changes, and the height of each product at this time The difference is the change.

It is not difficult to control the servomotor to provide the correct process with the controller, but the required hot press process for each workpiece is different, and if there is a change, it is brought about by the correct process of the fixed setting The improvement in yield is very limited.
The most important process of hot pressing is to contact and apply the correct bonding pressure. When the servomotor provides the same propulsion process and is used for different workpieces, irregular welding, irregular overpressure or irregular burns are easily generated.
When converting the propulsion process to force mode through the controller, the force required to hot press the workpiece is typically within 1.5 kg. However, when controlling not only the screw but also a small force to press the product, there is a gap between the screw and the associated steel ball member, and at the moment of actuation, an excess of force is generated. It is easy to create a phenomenon. This is a technical bottleneck that occurs when controlling a hot pressing process with a servomotor.
In view of the above, the inventor continued to study how to provide the accurate hot press pressure necessary for the hot press operation, and further improved the yield of the hot press operation.

Taiwan Utility Model No. M396200

The main object of the present invention is to provide a hot press that can be set accurately and yet provide a low error hot press pressure, thereby significantly improving the yield of the hot press operation.
In order to achieve the above objects, the hot press according to the invention comprises a pressing part comprising a voice coil motor and a welding head part comprising a welding head attached to the pressing part.
The voice coil motor includes a stator and a mover linearly displaceable with respect to the stator.
The welding head parts are relatively fixed to the mover, and since the linear displacement direction of the mover is the same as the displacement direction of the welding head, hot pressing of the welding head is performed using the mover. The pressure and travel distance required for operation can be adjusted directly.

  Preferably, the central position of the welding head is arranged concentrically with the mover. At this time, the force applied to the welding head by the mover is more accurate and direct.

Preferably, when carrying out a hot press, the stator further includes an elevation component for mounting, or a central position of the elevation component is disposed concentrically with the stator.
Preferably, the lifting and lowering part includes a fixed cylinder mounted on a machine table and a lifting and lowering pedestal reciprocating with respect to the fixed cylinder.
Preferably, the pressing part is relatively fixed to the elevating base, and controls the working position of the pressing part by the elevating base.
Preferably, the fixed cylinder is an electric cylinder.
Preferably, the stationary cylinder is provided with a cylinder axis, and the pressure part further comprises a stationary seat used for the installation of the stator. The fixed seat is provided with a through hole for passing the cylinder axis.
As described above, in addition to automatically and quickly moving the pressurized part to the optimum working position, it can be more stable when the hot press is activated, thereby improving the quality of the hot press work.

Preferably, when carrying out the hot pressing, it further includes a fine adjustment horizontal positioning seat provided between the mover and the welding head part.
The fine adjustment horizontal positioning seat is used to finely adjust the exact horizontal operating angle of the welding head part. Therefore, each of the welding head parts can exhibit a preferred orientation.

  Preferably, the pressure part further includes a fixed seat for installing the stator, and a slider module that stably slides the mover relative to the stator.

Compared to the prior art, the hot press of the present invention provides the pressure of the hot press operation with a voice coil motor. Since the provided process is a direct and linear propulsion mover, there is no need to additionally set the transmission mechanism.
The permanent magnetic field of the magnetic steel interacts with the magnetic poles generated by the excitation coil in the voice coil motor to provide a stable and accurate process to provide stable propulsion. This makes the hot press module more compact, so that the conversion efficiency is higher and more direct.
The process localization accuracy of the existing voice coil motor can easily reach 10 NM. Also, micro pressure control can be made to reach within 0.2 ± 0.01 kg. Thus, it is not necessary to pass the energy consumption of the transmission mechanism.
Also, the problem of excessive starting thrust due to the transmission gap can be avoided, whereby irregular welding, irregular overpressure or irregular combustion problems caused by irregular pressure during the hot pressing operation It can be improved.
The process of hot-pressing work becomes more accurate, and the hot-pressing work can obtain the best adjustment and control effect, thereby greatly improving the hot-pressing quality and yield.

Another feature of the present invention is that the voice coil motor can be applied to precision optical lens focusing process adjustment or other equipment requiring precision process control, a general voice coil motor is for hot pressing work Not designed.
In the structural design of the present invention, in particular, the center of the welding head is arranged concentrically with the mover of the voice coil motor (the mover and the coil of the voice coil motor are arranged concentrically). It is possible to provide a direct and accurate hot press pressure. This is also an important innovative technology to improve the hot press yield of the present invention.

FIG. 1 is a perspective view of a preferred embodiment of the present invention. FIG. 1 is an exploded perspective view of a part of a preferred embodiment of the present invention. FIG. 2 is a perspective view showing a combination of a pressure part and a welding head part according to a preferred embodiment of the present invention. FIG. 5 is a perspective view showing another combination of a pressure part and a welding head part according to a preferred embodiment of the present invention. 1 is an exploded perspective view of a pressure part and a welding head part according to a preferred embodiment of the present invention. FIG. 2 is a cross-sectional view of a pressure part and a welding head part of a preferred embodiment of the present invention. FIG. 2 is a schematic perspective view showing the concentric arrangement of a welding head and a stator according to a preferred embodiment of the present invention. 1 is a schematic perspective view showing an assembled position of a preferred embodiment of the present invention. FIG. 1 is a perspective view showing the appearance attached to a machine table according to a preferred embodiment of the present invention.

1 and 2 show a perspective view and a partial exploded view of a preferred embodiment of the present invention. The hot press 1 according to the present invention comprises a pressing part 10, a welding head part 20 attached to the pressing part 10, an elevating part 30 for attaching the pressing part 10, a pressing part 10 and a welding head part 20. And a fine adjustment horizontal positioning seat 40 provided therebetween.
By arranging a plurality of lifting parts 30 on the machine table, a plurality of hot presses 1 can be attached to the machine table 100 quickly and modularly, which aids in the hot pressing operation. The mounting positions are shown in FIGS. 8 and 9.

Reference is made to FIGS. The pressing part 10 includes a voice coil motor 11, and the voice coil motor 11 includes a stator 111 and a mover 112 linearly displaceable with respect to the stator 111, and the pressing part 10 further installs the stator 111. And a slider module 13 for stably moving the mover 112 linearly with respect to the stator 111.
The operating principle of the voice coil motor 11 is to drive the coil 115 provided internally to provide the thrust of the mover 112 through the associated control circuit. The coil 115 of the present embodiment is disposed above the mover 112, and the operation principle of the voice coil motor 11 is the prior art, so the description thereof is omitted here.

  Welding head part 20 fixes welding head 21, a plurality of clamps 22 for fixing welding head 21, a plurality of heat radiation blocks 23 for heat radiation of welding head 21, clamps 22 and heat radiation block 23. And a welding head seat 24.

  The elevating component 30 is provided to attach the stator 111, and mainly includes a fixed cylinder 31 attached to the machine table 100, and an elevating pedestal 32 that reciprocates with respect to the fixed cylinder 31. The pressure component 10 is relatively fixed to the elevating pedestal 32, and the elevating pedestal 32 drives the stator 111 to control the working position of the pressure component 10, and the pressure component 10 is preset. After reaching the working position, controlling the movement of the mover 112 helps the hot pressing work. The fixed cylinder 31 of the present embodiment is an electric cylinder, and a cylinder axis 311 of the fixed cylinder 31 here penetrates a through hole 120 provided in the fixed seat 12.

  A fine adjustment horizontal positioning seat 40 is provided between the pressing part 10 and the welding head part 20, one side of which is connected to the mover 112, and the other side is connected to the welding head seat 24. Being connected, the fine adjustment horizontal positioning seat 40 helps to adjust the welding head part 20 accurately.

In the present invention, in order to make the pressure of the hot pressing operation provided by the voice coil motor 11 more accurate, in particular, the center position of the welding head 21 and the center position of the mover 112 (i.e. the center of the coil 115) Arranged concentrically. The purpose of this is to be able to transmit the exact thrust of the mover 112 directly to the welding head 21 in a way that does not require extra work, thereby improving the accuracy of the pressure exerted by the mover 112.
Of course, in order to enhance the precise pressure control effect of the hot press 1, the center of the elevating part 30 (that is, the center of the cylinder axis 311) may be arranged concentrically with the stator 111. As a result, when the hot press 1 performs the hot press operation on the workpiece, the transmission of the related force becomes more stable, and since there is no distortion or vibration, an optimum pressure control effect can be obtained.

In summary, the present invention is an improvement over the prior art, and is mainly applied to the hot press welding industry by the characteristic that the voice coil motor 11 can provide accurate and stable pressing force. The servo motor greatly improves the problem of not being able to obtain an accurate pressure.
And in the case of carrying out, since the central position of welding head 21 and the central position of mover 112 are arranged concentrically, and precise pressing force by mover 112 can be transmitted to welding head 21 stably, Irregular welding of air welding, irregular overpressure, or irregular burn can be completely avoided.
The above-described embodiment is a exemplification of a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 hot press 10 pressing part 11 voice coil motor 111 stator 112 mover 115 coil 12 fixed seat 13 slider module 20 welding head part 21 welding head 22 clamp 23 heat radiation block 24 welding head seat 30 raising and lowering parts 31 fixed cylinder 311 cylinder axis 32 lifting Base 40 Horizontal positioning seat 100 for fine adjustment Machine table 120 Through hole

Claims (9)

A pressure component comprising a voice coil motor, and a welding head component comprising a welding head attached to the pressure component;
The voice coil motor includes a stator and a mover linearly displaceable with respect to the stator,
The welding head parts are relatively fixed to the mover, and since the linear displacement direction of the mover is the same as the displacement direction of the welding head, hot pressing of the welding head is performed using the mover. A hot press characterized by the ability to directly adjust the pressure and movement distance required for operation.   The hot press according to claim 1, wherein a central position of the welding head is disposed concentrically with the mover.   The hot press according to claim 1, further comprising a lifting part for mounting on the stator.   The hot press according to claim 3, wherein a central position of the elevating component is disposed concentrically with the stator. The elevating component includes a fixed cylinder attached to a machine table, and an elevating pedestal reciprocating with respect to the fixed cylinder.
The hot press according to claim 3, wherein the pressing component is relatively fixed to the elevating pedestal, and the working position of the pressing component is controlled by the elevating pedestal.   The hot press according to claim 5, wherein the fixed cylinder is an electric cylinder. The stationary cylinder comprises a cylinder axis, and the pressing part further comprises a stationary seat used for the installation of the stator,
The hot press according to claim 5, wherein the fixed seat comprises a through hole for passing the cylinder axis. It further includes a fine adjustment horizontal positioning seat provided between the mover and the welding head part,
The hot press according to claim 3, wherein the fine adjustment horizontal positioning seat is used to finely adjust the horizontal operating angle of the welding head part.   4. The apparatus according to claim 3, wherein the pressing part further includes a fixed seat for installing the stator, and a slider module that stably slides the mover relative to the stator. hot press.

Images