CN212831962U

CN212831962U - Film pasting device of lead frame

Info

Publication number: CN212831962U
Application number: CN202021331261.9U
Authority: CN
Inventors: 李凯; 熊志; 陈杰华; 殷杰; 张欣
Original assignee: Taixing City Yongzhi Electronic Device Co ltd
Current assignee: Taixing City Yongzhi Electronic Device Co ltd
Priority date: 2020-07-08
Filing date: 2020-07-08
Publication date: 2021-03-30
Anticipated expiration: 2030-07-08

Abstract

A film sticking device of a lead frame relates to the technical field of integrated circuit leads and lead frames, and comprises a pair of same film sticking machines arranged on two sides of a base material belt of the lead frame, wherein a wheel disc, a plurality of traction rollers, a telescopic regulator, a cutting die, a guide die, a film tearing device and a detector are arranged on a rack of the film sticking machines, a waste film box is arranged at the tail part of the rack, the wheel disc is loaded with a film sticking belt with the same width as the lead frame, the telescopic regulator is arranged between the wheel disc and the cutting die, the telescopic regulator comprises a roller wheel and a telescopic device, the cutting die comprises a cutting die support, a cutting die roller sleeve, a lining shaft and a cutting die gasket, and the cutting die roller sleeve is detachably; a pair of compression rollers are arranged on two sides of the lead frame base material belt, and adjusting nuts are arranged on the compression rollers; a first guide roller and a second guide roller are respectively arranged between the cutting die and the compression roller as well as between the cutting die and the waste film box; the guide die is close to the nip part of the compression roller, and the detector is arranged at the tail end of the compression roller. The utility model discloses it is not enough to effectively solve the inseparable degree of pad pasting equipment, the poor problem of dyestripping stability.

Description

Film pasting device of lead frame

Technical Field

The utility model relates to an integrated circuit lead wire and lead frame technical field especially relate to a pad pasting device of lead frame.

Background

The lead frame is an important discrete device for packaging electronic components such as triodes, diodes, potentiometers, capacitors, dust collecting circuits and the like, has wide application range and various types, and at present, the material of an electroplated layer in the common lead frame is different according to different product types, for example, silver plating is mainly suitable for welding pure gold bonding welding wires, and nickel plating is mainly suitable for welding aluminum-based bonding welding wires. In addition, the technical personnel in the industry know that the electroplating processing of the lead frame can not adopt a complete electroplating mode, but mainly adopts a local electroplating mode, because the firmness of the combination of the lead frame and the plastic package material is lower after the lead frame substrate is completely electroplated with metals such as silver, nickel and the like, the waterproof and the moistureproof of electronic components are greatly not facilitated.

At present, some automatic sticking film machines have also appeared in the market, but current pad pasting equipment laminating compactness is not enough, sometimes has the bubble, and dyestripping stability is relatively poor to can not be applicable to the interchange of multiple product.

SUMMERY OF THE UTILITY MODEL

In order to overcome the problems of insufficient compactness and poor film tearing stability of film sticking equipment in the prior art, the film sticking device of the lead frame comprises a pair of identical film sticking machines arranged on two sides of a base material belt of the lead frame, a wheel disc, a plurality of traction rollers, a telescopic regulator, a cutting die, a guide die, a film tearing device and a detector are arranged on a frame of the film sticking machine, a waste film box is arranged at the tail part of the frame, the wheel disc is loaded with a film sticking belt with the same width as the lead frame, the telescopic regulator is arranged between the wheel disc and the cutting die and comprises a roller wheel and a telescopic device, the cutting die comprises a cutting die support, a cutting die roller sleeve, a lining shaft and a cutting die gasket, and the cutting die roller sleeve is detachably connected with the lining shaft; a pair of compression rollers are arranged on two sides of the lead frame base material belt, and adjusting nuts are arranged on the compression rollers; a first guide roller is arranged between the cutting die and the compression roller, and a second guide roller is arranged between the cutting die and the waste film box; the guide die is arranged at a position close to the nip of the compression roller, and the detector is arranged at the tail end of the compression roller.

Preferably, the film sticking machine is provided with at least two wheel discs, a plurality of traction rollers are uniformly distributed around the wheel discs, and the traction rollers are distributed on the motion trail of the film.

Through adopting above-mentioned technical scheme, the rim plate on the sticking film machine is used for providing the membrane, and the rim plate sets to two at least, can have the second rim plate to continue after one of them membrane is used up, guarantees the efficiency of pad pasting, and the carry over pinch rolls around the rim plate is used for the transmission of membrane, will come from the membrane on the rim plate exhibition flat as far as, guarantees the accuracy of follow-up cutting die cutting.

Preferably, the roller in the telescopic regulator is arranged at the end of the telescopic device, the telescopic device consists of a cylinder and a U-shaped bracket, and the roller is arranged on the U-shaped bracket.

Through adopting above-mentioned technical scheme, when the membrane passes through flexible regulator, membrane and running roller contact, the process that the running roller passed through the telescoping device and removed can adjust the pressure of running roller to the membrane to adjust the tightness of membrane. The U-shaped bracket on the telescopic device is used for mounting the roller, and the cylinder realizes the control of the movement of the roller through compression and relaxation.

Preferably, the cutting die support is provided with a lining shaft, the two ends of the lining shaft are provided with cutting die gaskets, the cutting die gaskets are made of rubber, and the cutting die roller sleeve is sleeved on the lining shaft.

Through adopting above-mentioned technical scheme, the inside lining axle is fixed mounting's pivot on the cutting die support, and the cutting die packing ring is installed at inside lining axle both ends, can make things convenient for operating personnel to hand when installation and dismantlement, avoids operating personnel hand direct and cutting die roller shell direct action. The cutting die roller sleeve is sleeved on the lining shaft, so that the cutting die roller sleeve can be conveniently replaced and is easy to disassemble.

Preferably, the guide die penetrates through the shaft hole and the fixing hole, both sides of the front end of the guide die are smooth circular arcs, and the front top end of the cutting die is sharp.

Through adopting above-mentioned technical scheme, the fixed orifices that runs through in the guide die is used for fixing the guide die on the sticking film machine, and the shaft hole is through the swing joint of pivot and sticking film machine, can adjust the angle that forms between guide die and the compression roller, adapts to the guide die demand of the substrate of different grade type, and the front end both sides of guide die adopt smooth arc, and arc design can make membrane and lead frame substrate contained angle more and more littleer, and both laminate when finally reacing sharp-pointed part, realize the operation of sticking film through the compression roller.

Preferably, the film tearing device comprises an adhesive tape wheel, an adhesive tape belt wheel and a material receiving belt wheel, and the tail end of the film tearing device is connected with the waste film box.

Through adopting above-mentioned technical scheme, the dyestripping device sets up at the end of cutting die, and the part that will not do the pad pasting passes through sticky belt pulley adhesion and walks, and sticky belt pulley packs up after the tip adhesion of membrane is accomplished, transmits through the sticky belt pulley, transmits to receiving at last in the material band pulley, receives the material band pulley and transmits the waste material to the waste material box, carries out the collection of waste material.

Preferably, the waste film box is arranged at the tail end of the film tearing device, the waste film box is provided with a material receiving roll, and the material receiving roll is detachably connected with the waste film box.

Through adopting above-mentioned technical scheme, be equipped with a plurality of receipts material in the waste material box and roll, can carry out the rolling by the waste material that transmits on receiving the material band pulley, the design of a plurality of receipts material rolls can in time be changed after a winding mechanism is full-load.

Preferably, one side of the detector is provided with a laser detection lamp, the other side of the detector is provided with an imaging device, and the laser detection lamp and the lead frame base material belt are in the same plane.

By adopting the technical scheme, the detector is used for detecting the irradiation of the lamp through the laser, the imaging device on the other side surface obtains the data of the attaching degree of the film and the lead frame base material, and the tightness of the combination between the film and the lead frame base material is judged through the data of laser imaging.

In summary, the following steps: the utility model discloses a device of pad pasting is carried out to lead frame base band material, the membrane that will paste into passes through the rim plate output, under the traction of traction wheel, through flexible regulator, cutting die, with the membrane draw level and smooth, cut into required shape and size, the membrane of cutting passes through first deflector roll transmission, through the smooth lead frame substrate of pasting into the membrane of guide die on, the lead frame two sides is attached through two sticking film machines respectively, the membrane that cuts off is collected in transmitting the waste film box through tearing the membrane device. The cutting die adopts the design of the cutting die roller sleeve, the lining shaft and the cutting die gasket, the detachable connection method of the cutting die roller sleeve and the lining shaft is convenient to replace according to needs, and the cutting die gasket can be installed on the cutting die support in the installation process without contacting the cutting die roller sleeve.

Drawings

FIG. 1 is a schematic plan view of a film laminating apparatus for lead frames;

FIG. 2 is a schematic structural diagram of a cutting die in a lead frame laminating device;

fig. 3 is a schematic diagram of a detector structure of a film pasting device of a lead frame.

Reference numerals: 1. a film sticking machine; 2. a wheel disc; 3. a traction roller; 4. a telescopic adjuster; 41. a roller; 42. A telescoping device; 43. a cylinder; 44. a support; 5. cutting the die; 51. a cutting die support; 52. a cutting die roller sleeve; 53. A lining shaft; 54. a cutting die washer; 55. a first guide roller; 56. a second guide roller; 6. guiding a mold; 61. a shaft hole; 62. a fixing hole; 7. a film tearing device; 71. a tape wheel is stuck; 72. a mucosa pulley; 73. a material receiving belt wheel; 8. a waste film box; 81. collecting a material roll; 9. a compression roller; 91. adjusting the nut; 92. a detector; 921. a laser detection lamp; 922. an image forming apparatus.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Example 1

As shown in fig. 1 and 2: a film sticking device of a lead frame comprises a pair of same film sticking machines 1 arranged on two sides of a base material belt of the lead frame, wherein a wheel disc 2, a plurality of traction rollers 3, a telescopic regulator 4, a cutting die 5, a guide die 6, a film tearing device 7 and a detector 92 are arranged on the frame of the film sticking machines 1, a waste film box 8 is arranged at the tail part of the frame, the wheel disc 2 is loaded with a film sticking belt with the same width as the lead frame, the telescopic regulator 4 is arranged between the wheel disc 2 and the cutting die 5, the telescopic regulator 4 comprises a roller 41 and a telescopic device 42, the cutting die 5 comprises a cutting die support 51, a cutting die roller sleeve 52, a lining shaft 53 and a cutting die washer 54, and the cutting die roller sleeve 52 is detachably connected with the lining shaft 53; a pair of compression rollers 9 are arranged on two sides of the lead frame base material belt, and adjusting nuts 91 are arranged on the compression rollers 9; a first guide roller 55 is arranged between the cutting die 5 and the compression roller 9, and a second guide roller 56 is arranged between the cutting die 5 and the waste film box 8; the guide die 6 is disposed near the nip of the press roller 9, and the detector 92 is disposed at the tip of the press roller 9.

As shown in fig. 1 and 2: the wheel disc 2 on the laminator 1 is at least two, and a plurality of traction rollers 3 are uniformly distributed around the wheel disc 2, and the traction rollers 3 are distributed on the motion trail of the film. The rim plate 2 on the sticking film machine 1 is used for providing the membrane, and rim plate 2 sets to two at least, can have second rim plate 2 to continue after one of them membrane is used up, guarantees the efficiency of pad pasting, and carry over pinch rolls 3 around the rim plate 2 are used for the transmission of membrane, will come from the flattening of the membrane on the rim plate 2 as far as, guarantees the accuracy of follow-up cutting die 5 cutting.

As shown in fig. 1 and 2: the roller 41 of the telescopic regulator 4 is arranged at the end of the telescopic device 42, and the telescopic device 42 is composed of a cylinder 43 and a U-shaped bracket 44, and the roller 41 is installed on the U-shaped bracket 44. When the membrane passes through the telescopic regulator 4, the membrane contacts with the roller 41, and the pressure of the roller 41 on the membrane can be regulated in the process that the roller 41 moves through the telescopic device 42, so that the tension degree of the membrane can be regulated according to the force applied to the membrane in the transmission process. The U-shaped bracket 44 on the telescopic device 42 is used for installing the roller 41, and the air cylinder 43 controls the movement of the roller 41 through compression and relaxation.

As shown in fig. 1 and 2: the cutting die support 51 is provided with a lining shaft 53, two ends of the lining shaft 53 are provided with cutting die gaskets 54, the cutting die gaskets 54 are made of rubber, and the cutting die roller sleeve 52 is sleeved on the lining shaft 53. The lining shaft 53 is a rotating shaft fixedly arranged on the cutting die support 51, and the cutting die gaskets 54 are arranged at two ends of the lining shaft 53 and can provide fulcrums during installation and disassembly, so that the direct action of the hands of an operator on the cutting die roller sleeve 52 is avoided. The cutting die roller sleeve 52 is sleeved on the lining shaft 53, so that the replacement is convenient, and the disassembly is easy.

Example 2

As shown in fig. 1 and 2: the guide die 6 is provided with a shaft hole 61 and a fixing hole 62 in a penetrating manner, both sides of the front end of the guide die 6 are smooth circular arcs, and the front top end of the cutting die 5 is sharp. Fixed orifices 62 that run through in the guide die 6 are used for fixing the guide die 6 on the sticking film machine 1, shaft hole 61 is through the swing joint of pivot and sticking film machine 1, can adjust the angle that forms between guide die 6 and the compression roller 9, the guide die 6 demand of the substrate of adaptation different grade type, the front end both sides of guide die 6 adopt smooth arc, arc design can make the direct angle of membrane and lead frame substrate more and more littleer, both laminate when finally reacing sharp-pointed part, the operation of pad pasting is realized through compression roller 9.

As shown in fig. 1 and 2: the film tearing device 7 comprises a film tearing mechanism which comprises an adhesive tape wheel 71, an adhesive tape belt wheel 72 and a material receiving belt wheel 73, and the tail end of the film tearing device 7 is connected with the waste film box 8. The film tearing device 7 is arranged at the tail end of the cutting die 5, the part which does not need to be pasted with a film is adhered away through the adhesive belt wheel, the adhesive belt wheel 71 is folded after the end part of the film is adhered, the film is transmitted through the adhesive belt wheel 72, the film is finally transmitted to the material receiving belt wheel 73, the material receiving belt wheel 73 transmits waste materials to the waste material box, and the waste materials are collected.

As shown in fig. 1 and 2: the waste film box 8 is arranged at the tail end of the film tearing device 7, the waste film box 8 is provided with a material receiving roll 81, and the material receiving roll 81 is detachably connected with the waste film box 8. The waste material box is provided with a plurality of receiving rolls 81, waste materials transmitted from the receiving belt wheel 73 can be collected, and the plurality of receiving rolls 81 can be replaced in time after a collecting mechanism is fully loaded.

As shown in fig. 1, 2 and 3: the detector 92 is provided with a laser detection lamp 921 on one side and an imaging device 922 on the other side, and the laser detection lamp 921 is in the same plane as the lead frame substrate tape. The detector 92 is provided to detect irradiation of the lamp 921 by laser, and the image forming device 922 on the other side surface obtains data on the degree of adhesion of the film to the lead frame base material, and determines whether or not the adhesion between the film and the lead frame base material is tight by the data of laser image formation.

While the foregoing description shows and describes the preferred embodiments of the present invention, it is to be understood that the invention is not limited to the forms disclosed herein, but is not intended to be exhaustive or to exclude other embodiments and may be used in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.

Claims

1. The film pasting device for the lead frame is characterized in that: the film sticking machine comprises a pair of identical film sticking machines (1) arranged on two sides of a lead frame base material belt, wherein a wheel disc (2), a plurality of traction rollers (3), a telescopic regulator (4), a cutting die (5), a guide die (6), a film tearing device (7) and a detector (92) are arranged on a frame of the film sticking machine (1), a waste film box (8) is arranged at the tail of the frame, the wheel disc (2) is loaded with a film sticking belt with the same width as the lead frame, the telescopic regulator (4) is arranged between the wheel disc (2) and the cutting die (5), the telescopic regulator (4) comprises a roller (41) and a telescopic device (42), the cutting die (5) comprises a cutting die support (51), a cutting die roller sleeve (52), a lining shaft (53) and a cutting die gasket (54), and the cutting die roller sleeve (52) is detachably connected with the lining shaft (53); a pair of compression rollers (9) is arranged on two sides of the lead frame substrate belt, and adjusting nuts (91) are arranged on the compression rollers (9); a first guide roller (55) is arranged between the cutting die (5) and the compression roller (9), and a second guide roller (56) is arranged between the cutting die (5) and the waste film box (8); the guide die (6) is arranged close to the biting part of the compression roller (9), and the detector (92) is arranged at the tail end of the compression roller (9).

2. The die attachment device for lead frames according to claim 1, wherein: the film sticking machine is characterized in that at least two upper wheel discs (2) are arranged on the film sticking machine (1), a plurality of traction rollers (3) are uniformly distributed around the wheel discs (2), and the traction rollers (3) are distributed on the motion trail of the film.

3. The die attachment device for lead frames according to claim 1, wherein: and a roller (41) in the telescopic regulator (4) is arranged at the end part of the telescopic device (42), the telescopic device (42) consists of a cylinder (43) and a U-shaped bracket (44), and the roller (41) is arranged on the U-shaped bracket (44).

4. The die attachment device for lead frames according to claim 1, wherein: the cutting die is characterized in that a lining shaft (53) is installed on the cutting die support (51), cutting die gaskets (54) are installed at two ends of the lining shaft (53), the cutting die gaskets (54) are made of rubber, and the cutting die roller sleeve (52) is sleeved on the lining shaft (53).

5. The die attachment device for lead frames according to claim 1, wherein: the guide die (6) penetrates through the shaft hole (61) and the fixing hole (62), both sides of the front end of the guide die (6) are smooth arc-shaped, and the front top end of the cutting die (5) is sharp.

6. The die attachment device for lead frames according to claim 1, wherein: the film tearing device (7) comprises an adhesive tape wheel (71), an adhesive tape belt wheel (72) and a material receiving belt wheel (73), and the tail end of the film tearing device (7) is connected with the waste film box (8).

7. The die attachment device for lead frames according to claim 1, wherein: waste film box (8) set up the end at dyestripping device (7), and waste film box (8) are equipped with material book (81), and material book (81) and waste film box (8) can be dismantled and be connected.

8. The die attachment device for lead frames according to claim 1, wherein: detector (92) one side is equipped with laser and detects lamp (921), and the opposite side is equipped with image device (922), and laser detects lamp (921) and lead frame base material area and is in the coplanar.