Punching jig for chip on film production

Abstract

The utility model discloses a punching jig for chip-on-film production, which relates to the technical field of chip-on-film production and comprises a frame and a positioning component, a lower die holder is arranged in the middle of the frame, a waste frame is fixed at the bottom of the lower die holder, an electric cylinder is arranged at the top of the frame, the bottom of the electric cylinder is connected with a lifting frame, and the bottom of the lifting frame is connected with the positioning component. The positioning assembly is arranged in the middle of the lifting frame and comprises a positioning seat, a stepped groove, a limiting groove, a punching needle and a limiting block. According to the punching jig for chip-on-film production, through the arrangement of the positioning assembly, when the punching needle is installed and fixed, the punching needle can be preliminarily limited only by penetrating the punching needle through the positioning base and enabling the end of the punching needle to be embedded into the stepped groove, meanwhile, the limiting block on the outer side of the punching needle can slide into the limiting groove to be matched with the limiting groove, angle deviation is avoided, and therefore in the installation process, the punching needle is not prone to being damaged. Time-consuming angle adjustment is not needed, installation is convenient, time is saved, and the situation that people forget to adjust or adjust mistakenly can be avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to a thin film production technical field, concretely is a kind of punching jig for thin film production. BACKGROUND

[0002] In the process of thin film production, punching jig is needed to punch it, and its structure is generally composed of three parts of mold main body, punch pin and bottom die.

[0003] At present, the traditional jig is mainly composed of two shapes of circle and square at the bottom of punch pin, and the mold slide seat clamping groove is circular or rectangular, so that the punch pin will change angle during operation even if it is pressed by the pressing seat, and the cutting edge cannot be kept in the optimal position, and the cutting edge direction is also neglected after maintenance, which directly leads to the increase of punching burr and volcano, the increase of maintenance frequency, and the problem of affecting the punching precision caused by the angle deviation of punch pin.

[0004] Therefore, in view of the above problems, the existing structure and defects are improved, and a punching jig for thin film production is provided. INVENTION CONTENTS

[0005] The utility model aims at providing a punching jig for thin film production to solve the problems in the background art.

[0006] To achieve the above object, the utility model provides the following technical scheme: a punching jig for thin film production, comprising a rack and a positioning assembly, a lower die seat is arranged in the middle of the rack, and a waste frame is fixed to the bottom of the lower die seat, an electric cylinder is arranged at the top of the rack, and a lifting frame is connected to the bottom of the electric cylinder, the positioning assembly is arranged in the middle of the lifting frame, the positioning assembly comprises a positioning seat, a stepped groove, a limiting groove, a punch pin and a limiting block, the positioning seat is arranged in the central bottom surface of the upper part of the lifting frame, a stepped groove is formed in the central inside of the positioning seat, and a limiting groove is arranged outside the stepped groove, the punch pin is slidably connected to the central inside of the positioning seat, and the limiting block is fixed to the top outer end of the punch pin.

[0007] Further, the upper part of the punch pin is in a stepped shape, and the upper part of the punch pin is matched with the positioning seat through the stepped groove.

[0008] Further, the limiting groove is in a cross shape, and the width of the limiting groove is consistent with the width of the limiting block.

[0009] Further, the lower part of the limiting block is provided with a stabilizing assembly, the stabilizing assembly comprises a fixed cylinder and a return spring, the fixed cylinder is symmetrically arranged at the bottom of the lifting frame, and the return spring is arranged in the inside of the fixed cylinder.

[0010] Further, the stabilizing assembly further comprises a piston rod, a pressing ring and a rubber pad, the bottom of the reset spring is connected with the piston rod, the bottom of the piston rod is fixed with the pressing ring, and the bottom of the pressing ring is provided with the rubber pad.

[0011] Further, the punch pin is in sliding connection with the pressing ring, and the bottom of the punch pin is arc-shaped.

[0012] Further, the stabilizing assembly further comprises a first one-way valve and a second one-way valve, the upper side of the fixed cylinder is provided with the first one-way valve, and the top of the fixed cylinder is fixed with the second one-way valve.

[0013] Further, the stabilizing assembly further comprises a connecting pipe and a gas injection hole, the top of the second one-way valve is connected with the connecting pipe, the connecting pipe is in communication with the inside of the punch pin, and the bottom of the punch pin is provided with the gas injection hole.

[0014] The utility model provides a kind of punching jig for thin film of die attach, with following beneficial effects:

[0015] 1, the utility model discloses the setting of positioning assembly, when installing and fixing punch pin, only need to make punch pin pass through positioning seat, make its end portion and step groove be embedded, can preliminarily limit punch pin, while the limiting block of punch pin outside can also be inlaid into limit slot and be in harmony, avoid angle deviation, so in installation process, it is not necessary to spend time to adjust angle, installation is convenient and saves time, and also can avoid the occurrence of personnel forget to adjust or error adjustment condition, and this design will make the punching precision more stable and reliable;

[0016] 2, the utility model discloses the setting of stabilizing assembly, in the process of punching, when electric cylinder drives lifting frame to move down, the bottom of pressing ring is lower than the bottom of punch pin, so that the periphery of thin film of die attach is positioned before punching, so as to improve the precision when punching, and reset spring can be buffered when subsequent punching, and in the process of punching, piston rod also slides in fixed cylinder, so that the air in it is transported to the inside of punch pin through second one-way valve and connecting pipe, and is ejected from the gas injection hole in the bottom, so as to avoid waste material to adhere to the bottom of punch pin or block the through hole in lower die seat, when electric cylinder drives lifting frame to move up and reset, reset spring will push piston rod, so that the air outside enters fixed cylinder through first one-way valve, can be automatically replenished, so as to repeat work. ACCURATE DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the whole three-dimensional structure schematic diagram of the utility model a kind of punching jig for thin film of die attach;

[0018] Figure 2 It is the positioning seat overhead three-dimensional structure schematic diagram of the utility model a kind of punching jig for thin film of die attach;

[0019] Figure 3 This is a schematic diagram of the three-dimensional structure of a punching needle of a punching jig for producing chip-on-film according to the present invention, viewed from above;

[0020] Figure 4 The utility model is a schematic diagram of the three-dimensional structure of the stabilizing component part of a punching jig for producing chip-on-film.

[0021] In the figure: 1. Frame; 2. Lower die base; 3. Waste frame; 4. Electric cylinder; 5. Lifting frame; 6. Positioning assembly; 601. Positioning seat; 602. Step groove; 603. Limiting groove; 604. Punch needle; 605. Limiting block; 7. Stabilizing assembly; 701. Fixed cylinder; 702. Return spring; 703. Piston rod; 704. Pressing ring; 705. Rubber pad; 706. First one-way valve; 707. Second one-way valve; 708. Connecting pipe; 709. Jet hole. DETAILED DESCRIPTION

[0022] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0023] like Figures 1 to 3 As shown, a punching jig for producing chip-on-film comprises a frame 1 and a positioning assembly 6. A lower die base 2 is arranged in the middle of the frame 1, and a waste frame 3 is fixed to the bottom of the lower die base 2. An electric cylinder 4 is arranged on the top of the frame 1, and a lifting frame 5 is connected to the bottom of the electric cylinder 4. The positioning assembly 6 is arranged in the middle of the lifting frame 5. The positioning assembly 6 comprises a positioning seat 601, a stepped groove 602, a limiting groove 603, a punching needle 604 and a limiting block 605. A positioning seat 601 is arranged in the center of the upper bottom surface of the lifting frame 5, and a stepped groove 602 is provided in the center of the inner part of the positioning seat 601, and a limiting groove 603 is provided on the outside of the stepped groove 602. The inner center of the positioning seat 601 is slidably connected to the inner center of the positioning seat 601. Punch needle 604, and the top outer end of punch needle 604 is fixed with a limiting block 605, the upper part of punch needle 604 is stepped, and the upper part of punch needle 604 is matched with the positioning seat 601 through the stepped groove 602. When installing punch needle 604, pass punch needle 604 through the positioning seat 601 so that its end is engaged with the stepped groove 602, which can preliminarily limit the punch needle 604. The limiting groove 603 is distributed in a cross shape, and the width of the limiting groove 603 is consistent with the width of the limiting block 605. The limiting block 605 on the outside of the punch needle 604 can slide into the limiting groove 603 to fit together, thereby avoiding angle deviation. Therefore, during the installation process, there is no need to spend time adjusting the angle, and the installation is convenient and saves time.

[0024] like Figure 3 and Figure 4As shown, the lower part of the limiting block 605 is provided with a stabilizing assembly 7, which comprises a fixing cylinder 701 and a reset spring 702, and the bottom of the lifting frame 5 is symmetrically provided with the fixing cylinder 701, and the inside of the fixing cylinder 701 is provided with the reset spring 702, the stabilizing assembly 7 further comprises a piston rod 703, a pressing ring 704 and a rubber pad 705, the bottom of the reset spring 702 is connected with the piston rod 703, the bottom of the piston rod 703 is fixed with the pressing ring 704, and the bottom of the pressing ring 704 is provided with the rubber pad 705, the punch pin 604 is in sliding connection with the pressing ring 704, and the bottom of the punch pin 604 is arc-shaped, when the electric cylinder 4 drives the lifting frame 5 to move downward, the pressing ring 704 will first press and position the periphery of the chip on film, so as to improve the accuracy during subsequent punching, the stabilizing assembly 7 further comprises a first one-way valve 706 and a second one-way valve 707, the first one-way valve 706 is arranged on one side of the upper part of the fixing cylinder 701, and the second one-way valve 707 is fixed on the top of the fixing cylinder 701, when the electric cylinder 4 drives the lifting frame 5 to move upward and reset, the reset spring 702 will push the piston rod 703, so that the external air enters into the fixing cylinder 701 through the first one-way valve 706, the stabilizing assembly 7 further comprises a connecting pipe 708 and a jet hole 709, the connecting pipe 708 is connected to the top of the second one-way valve 707, and the connecting pipe 708 is in communication with the inside of the punch pin 604, and the bottom of the punch pin 604 is provided with the jet hole 709, during the punching process, the piston rod 703 will also slide in the fixing cylinder 701, so as to transport the air in the inside thereof to the inside of the punch pin 604 through the second one-way valve 707 and the connecting pipe 708, and then spray out from the bottom jet hole 709, so as to avoid that the waste material adheres to the bottom of the punch pin 604 or blocks the through hole in the bottom die seat 2.

[0025] In summary, the punching jig for the chip on film production is used, first of all, according to Figure 1 、 Figure 2 and Figure 3The structure shown in the middle, first pass through the positioning seat 601 needle 604, its end with the step groove 602 embedded, can be initially limited to the punch needle 604, while the punch needle 604 outside the limit block 605 can also be inserted into the limit groove 603 fit, then the positioning seat 601 installed in the upper surface of the lifting frame 5, then, when the external conveying equipment will be moved to the position of the film to be punched hole below the die seat 2 above, the electric cylinder 4 driven lifting frame 5 down, at this time the compression ring 704 will be through the rubber pad 705 first on the periphery of the film to be punched hole positioning, followed by the use of reset spring 702 can be buffered when punching, then, punch needle 604 and the die seat 2 can be punched on the film, in the process, the piston rod 703 will also slide in the fixed cylinder 701, so that the air inside it through the second check valve 707 and connecting pipe 708 to the punch needle 604, and from the bottom of the jet hole 709 jet, so as to avoid the waste adhering to the bottom of the punch needle 604 or block the through hole in the die seat 2, finally, when the electric cylinder 4 driven lifting frame 5 up reset, reset spring 702 will push the piston rod 703, so that the external air through the first check valve 706 into the fixed cylinder 701, so that the stable assembly 7 can be repeated work.

[0026] The embodiments of the present application are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present application to the forms disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. Embodiments were chosen and described in order to best explain the principles of the present application and its practical application, and to enable others skilled in the art to understand the present application for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. A punching jig for flip chip thin film production, comprising a rack (1) and a positioning assembly (6), characterized in that, The middle part of the frame (1) is provided with a lower die seat (2), and the bottom of the lower die seat (2) is fixedly provided with a waste frame (3); the top of the frame (1) is provided with an electric cylinder (4), and the bottom of the electric cylinder (4) is connected with a lifting frame (5); the positioning assembly (6) is arranged in the middle part of the lifting frame (5); the positioning assembly (6) comprises a positioning seat (601), a stepped groove (602), a limiting groove (603), a punch pin (604) and a limiting block (605); the upper bottom surface of the lifting frame (5) is centrally provided with the positioning seat (601), the inner part of the positioning seat (601) is centrally provided with the stepped groove (602), and the outer part of the stepped groove (602) is provided with the limiting groove (603); the inner part of the positioning seat (601) is slidably connected with the punch pin (604), and the top outer end of the punch pin (604) is fixedly provided with the limiting block (605).

2. The punching jig for a flip chip thin film according to claim 1, wherein The upper part of the punch pin (604) is in a stepped shape, and the upper part of the punch pin (604) is matched with the positioning seat (601) through the stepped groove (602).

3. The punching jig for the COF according to claim 1, wherein The limiting groove (603) is in a cross shape, and the width of the limiting groove (603) is consistent with the width of the limiting block (605).

4. The punching jig for a flip chip on film according to claim 1, wherein The lower part of the limiting block (605) is provided with a stabilizing assembly (7), the stabilizing assembly (7) comprises a fixed cylinder (701) and a return spring (702), and the bottom of the lifting frame (5) is symmetrically provided with the fixed cylinder (701), and the inner part of the fixed cylinder (701) is provided with the return spring (702).

5. The punching jig for a flip chip on film according to claim 4, wherein The stabilizing assembly (7) further comprises a piston rod (703), a pressing ring (704) and a rubber pad (705), the bottom of the return spring (702) is connected with the piston rod (703), the bottom of the piston rod (703) is fixedly provided with the pressing ring (704), and the bottom of the pressing ring (704) is provided with the rubber pad (705).

6. The punching jig for a flip chip on film according to claim 5, wherein The punch pin (604) is slidably connected with the pressing ring (704), and the bottom of the punch pin (604) is in an arc shape.

7. The punching jig for a flip chip on film according to claim 5, wherein The stabilizing assembly (7) further comprises a first one-way valve (706) and a second one-way valve (707), one side of the upper part of the fixed cylinder (701) is provided with the first one-way valve (706), and the top of the fixed cylinder (701) is fixedly provided with the second one-way valve (707).

8. The punching jig for a flip chip on film according to claim 7, wherein The stabilizing assembly (7) further comprises a connecting pipe (708) and a jet hole (709), the top of the second one-way valve (707) is connected with the connecting pipe (708), the connecting pipe (708) is in communication with the inner part of the punch pin (604), and the bottom of the punch pin (604) is provided with the jet hole (709).

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