Adhesive tape device and adhesive tape cutting-off equipment for lead frame

Abstract

The utility model discloses a tape pasting device and tape cutting equipment for a lead frame, and relates to the technical field of tape pasting of the lead frame, the tape pasting device comprises a machine table, a shearing die used for pasting an adhesive tape on the lead frame is arranged above the machine table, and a feeding device used for feeding the adhesive tape to the shearing die is further arranged above the machine table. The feeding device comprises a feeding disc used for containing the adhesive tape and sending out the adhesive tape and a winding disc used for winding an adhesive tape protection film, the adhesive tape can be automatically supplied to the shearing mold through the feeding device, the mold does not need to be supplemented with the adhesive tape manually after the adhesive tape is sheared by the mold, automatic production of the mold can be achieved, and the working efficiency of the mold is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to lead frame tape sticking technical field especially relates to a tape sticking device and tape cutting equipment for lead frame. BACKGROUND

[0002] Lead frame is a kind of chip carrier of integrated circuit, is a kind of key structural member that realizes the electrical connection of chip internal circuit lead-out end and external lead by means of bonding material, forms electrical circuit, RT adhesive tape needs to be pasted on lead frame before subsequent packaging, RT adhesive tape can prevent resin overflow during packaging, also can avoid some small insulators mutual contact, lead frame needs to be pasted with RT adhesive tape, and die is needed to paste RT adhesive tape on lead frame, but when die pastes RT adhesive tape on lead frame, the protective film on RT adhesive tape is separated from RT adhesive tape body manually first, so that die can normally paste RT adhesive tape on lead frame. SUMMARY

[0003] The utility model discloses to overcome the above-mentioned situation shortage, it aims at providing a kind of technical scheme that RT adhesive tape body and protective film can be separated automatically.

[0004] To achieve the above object, the utility model provides the following technical scheme: a tape sticking device for lead frame, including machine table, the cutting die for pasting adhesive tape on lead frame is equipped on the top of machine table, the feeding device for feeding adhesive tape for cutting die is also equipped on the top of machine table, the feeding device includes placing adhesive tape and the feeding disc for sending out adhesive tape and the winding disc for winding adhesive tape protective film.

[0005] As a further scheme of the utility model: the feeding device includes the feeding disc for placing adhesive tape and the feeding machine for sending the adhesive tape in feeding disc into cutting die located outside cutting die.

[0006] As a further scheme of the utility model: the outer side of feeding disc close to feeding machine is equipped with a plurality of support rods contacting inner ring of adhesive tape, and the outer side of feeding disc is movably provided with movable element contacting inner ring of adhesive tape.

[0007] As a further scheme of the utility model: the feeding machine includes first motor, and one side of first motor is driven with rotating shaft.

[0008] As a further scheme of the utility model: the feeding machine also includes horizontal plate, the horizontal plate is located at one side of rotating shaft, and top surface is parallel with top end of rotating shaft, and the inside of horizontal plate is equipped with movable stopper.

[0009] As a further scheme of the utility model: the outside of the feeding tray is equipped with a movable part, which can make the movable part relatively far away from or relatively close to the connecting block of the adhesive tape, and an elastic part is arranged between the connecting block and the movable part.

[0010] As a further scheme of the utility model: the upper part of the feeding tray is equipped with a winding disc for winding the protective film of the adhesive tape.

[0011] As a further scheme of the utility model: the shearing die comprises an upper die, and a cutting plate is arranged below the upper die and matched with the upper die, and the hollow part of the cutting plate corresponding to the position of the punch of the upper die is a cutting area.

[0012] As a further scheme of the utility model: the shearing die further comprises a lower die, a heating part is arranged on the lower die, and a pressing block for placing the lead frame is further arranged on the lower die, and the heating part is used for heating the pressing block.

[0013] As a further scheme of the utility model: the machine table is equipped with a movable base plate, the feeding device is movably arranged on the base plate, a CCD detection station for detecting the lead frame with the adhesive tape is arranged above the machine table, and a pressing station for reinforcing the adhesion between the lead frame and the adhesive tape is arranged above the machine table.

[0014] A tape cutting device for the lead frame comprises the tape device for the lead frame.

[0015] Compared with the prior art, the beneficial effects of the technical scheme are that the feeding device can automatically supply the shearing die with the adhesive tape, and the RT adhesive tape body and the protective film of the adhesive tape can be automatically separated, so that the protective film on the RT adhesive tape is separated without manual operation, and the tape efficiency of the shearing die for the lead frame is improved.

[0016] The additional aspects and advantages of the utility model will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without the creative labor.

[0018] Figure 1 It is the structure perspective view of the utility model;

[0019] Figure 2is a shearing die structure perspective view of the utility model;

[0020] Figure 3 is a feeding device structure perspective view of the utility model Figure 1 ;

[0021] Figure 4 is a feeding device structure perspective view of the utility model Figure 2 ;

[0022] Figure 5 is a feeding tray internal structure schematic view of the utility model;

[0023] Figure 6 is a connecting block structure front view of the utility model;

[0024] Figure 7 is an upper die structure explosion section view of the utility model;

[0025] Figure 8 is an upper die structure explosion view of the utility model;

[0026] Figure 9 is a lower die structure perspective view of the utility model;

[0027] Figure 10 is a base plate structure perspective view of the utility model;

[0028] Figure 11 is a cutting plate structure perspective view of the utility model Figure 1 ;

[0029] Figure 12 is a cutting plate structure perspective view of the utility model Figure 2

[0030] The corresponding label explanation in the drawing is as follows:

[0031] 1, machine table;2, shearing die;3, feeding device;

[0032] 11, base plate;12, CCD detection station;13, pressurizing station;21, upper die;22, lower die;31, feeding tray;32, feeder;

[0033] 211, cutting plate;212, cutting area;213, feeding channel;214, punch;215, adsorption hole;221, heating piece;222, lower pressing block;

[0034] 311, support rod;312, movable piece;313, connecting block;314, elastic piece;315, winding disc;321, first motor;322, rotating shaft;323, flat plate;324, stop block. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0036] The embodiment provides a tape cutting device, which comprises a tape device for lead frame as shown in Figures 1-12 The tape device for lead frame comprises a machine table 1, a shearing die 2 for pasting adhesive tape on the lead frame is arranged above the machine table 1, a feeding device 3 for feeding adhesive tape for the shearing die 2 is also arranged above the machine table 1, the feeding device 3 comprises a feeding disc 31 for placing adhesive tape and sending out the adhesive tape and a winding disc 315 for winding protective film of the adhesive tape.

[0037] The winding disc 315 is connected with the feeding disc 31 through a belt transmission, so that when the feeding disc 31 rotates, the winding disc 315 also rotates, the adhesive tape in the feeding disc 31 is separated from the protective film, the protective film is wound in the winding disc 315, so that the adhesive tape can be sent into the shearing die 2 when the feeding disc 31 feeds, and the protective film is collected by the winding disc 315, which is convenient for recycling.

[0038] The feeding device 3 comprises a feeder 32 arranged outside the shearing die 2 for sending the adhesive tape in the feeding disc 31 into the shearing die 2, the adhesive tape can be fixed on the feeding disc 31, which is convenient for sending the adhesive tape into the feeder 32, the adhesive tape in the feeder 32 is sent into the shearing die 2, so that the adhesive tape is automatically sent into the shearing die 2.

[0039] The outer side of the feeding disc 31 close to the feeder 32 is provided with a plurality of supporting rods 311 in contact with the inner circle of the adhesive tape, the outer side of the feeding disc 31 is movably provided with a movable piece 312 in contact with the inner circle of the adhesive tape, the supporting rods 311 can support and fix the adhesive tape, and the movable piece 312 can realize the function of fixing the adhesive tape of different sizes.

[0040] The feeder 32 comprises a first motor 321, a rotating shaft 322 is driven on one side of the first motor 321, the first motor 321 can drive the rotating shaft 322 to rotate, the rotating shaft 322 can send the adhesive tape into the shearing die 2 after rotating.

[0041] The feeding machine 32 further comprises a flat plate 323 located on one side of the rotating shaft 322 and having a top surface parallel to the top end of the rotating shaft 322, and the flat plate 323 is internally provided with movable stoppers 324, and the adhesive tape will first pass through the flat plate 323 before contacting the rotating shaft 322, and the stoppers 324 on the flat plate 323 can limit the movement path of the adhesive tape, so that the adhesive tape will not deviate during transportation and cannot enter the cutting die 2.

[0042] The outer side of the feeding disc 31 is provided with a movable part 312, which can move away from or close to the connecting block 313 of the adhesive tape, and the connecting block 313 and the movable part 312 are provided with elastic members 314, which are pressed by the connecting block 313 when the movable part 312 moves with the connecting block 313, and the connecting block 313 can press the movable part 312 when facing different sizes of adhesive tape rings, and the movable part 312 will move in the direction of the feeding disc 31 after being pressed, so that the distance between the movable part 312 and the supporting rod 311 is reduced, and the smaller adhesive tape ring can be in contact with the supporting rod 311 and the movable part 312 at the same time, and when the adhesive tape ring is placed, the elastic member 314 will start to recover, so that the movable part 312 abuts against the inner wall of the adhesive tape ring, thereby fixing the adhesive tape ring.

[0043] Specific feeding process: start the first motor 321, the first motor 321 will drive the rotating shaft 322 to rotate after starting, and the rotating shaft 322 will send the adhesive tape to the direction of the cutting die 2 after rotating because of the adhesion of the adhesive tape and the rotating shaft 322, and at the same time, the feeding disc 31 will start to rotate, and the feeding disc 31 will transport the internal adhesive tape to the path direction of the cutting die 2 after rotating, and the adhesive tape will first pass through the area of the flat plate 323 before being transported to the position of the rotating shaft 322, and the stoppers 324 on the flat plate 323 can ensure that the adhesive tape will not deviate from the path during transportation, and because the stoppers 324 are movably arranged, the distance between the stoppers 324 can be adjusted, so that different widths of adhesive tapes can be adapted, and when the adhesive tape enters the cutting die 2, the cutting die 2 will start to cut the adhesive tape.

[0044] The shearing die 2 comprises an upper die 21, a cutting plate 211 arranged below the upper die 21 and matched with the upper die 21, a punch 214 arranged below the upper die 21, the cutting plate 211 arranged below the punch 214 and matched with the punch 214, a cutting area 212 arranged at a position corresponding to the punch 214 on the cutting plate 211, a feeding channel 213 arranged on one side of the cutting plate 211 and used for conveying the adhesive tape supplied by the feeding device 3 to the cutting area 212, a plurality of adsorption holes 215 arranged on the punch 214 and used for adsorbing the adhesive tape, and a lower die 22, wherein the lower die 22 is provided with a heating element 221 and a pressing block 222 used for placing the lead frame, and the heating element 221 is used for heating the pressing block 222. The adsorption holes 215 keep vacuum at the position where the punch 214 is in contact with the adhesive tape by being connected with an external air source.

[0045] Specifically, the shearing and pasting process of the adhesive tape is as follows: after the adhesive tape is conveyed into the feeding channel 213 from the feeder 32, the adhesive tape continues to move to the position of the cutting area 212 through the feeding channel 213 due to the operation of the feeder 32. After the adhesive tape moves to the cutting area 212, the upper die 21 is started, and the upper die 21 pushes the punch 214 to pass through the cutting area 212, so as to cut the adhesive tape located in the cutting area 212. After the punch 214 cuts the adhesive tape, the adsorption holes 215 on the punch 214 adsorb the adhesive tape on the punch 214, so that the adhesive tape does not deviate when the punch 214 moves and can contact the lead frame on the pressing block 222. At the same time that the upper die 21 cuts the adhesive tape, the heating element 221 is started, and the heating element 221 heats the pressing block 222 after being started. The pressing block 222 transmits heat to the lead frame after being heated, so that the adhesive tape on the upper die 21 is heated and softened after contacting the lead frame, and the adhesive tape is pasted on the lead frame.

[0046] The machine table 1 is provided with a movable base plate 11, and the feeding device 3 is movably arranged on the base plate 11. The machine table 1 is provided with a CCD detection station 12 arranged above the machine table 1 and used for detecting the lead frame after the pasting of the adhesive tape is completed. The machine table 1 is provided with a pressing station 13 arranged above the machine table 1 and used for reinforcing the adhesion between the lead frame and the adhesive tape. The lead frame after the pasting of the adhesive tape is completed passes through the CCD detection station 12. The CCD detection station 12 can detect whether the adhesive tape on the lead frame is deviated and whether the adhesive tape is pasted on the lead frame. When the lead frame is not pasted with the adhesive tape or the adhesive tape is deviated after being pasted, the whole device starts to alarm and stop. The lead frame after the detection is completed passes through the pressing station 13. The pressing station 13 can press the lead frame and the adhesive tape again, so as to reinforce the adhesion between the lead frame and the adhesive tape and ensure that the adhesion between the lead frame and the adhesive tape is stable.

[0047] It is apparent for a person skilled in the art that the present application is not restricted to the details of the above exemplary embodiments, but that it can be implemented in other concrete forms without departing from the spirit or the essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary only, and not limiting, the scope of the present application being defined by the appended claims rather than the above description, and all changes coming within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims concerned.

Claims

1. A taping device for a lead frame, characterized by, The machine includes a machine base (1), and a cutting die (2) for attaching tape to a lead frame is provided above the machine base (1). A feeding device (3) for supplying tape to the cutting die (2) is also provided above the machine base (1). The feeding device (3) includes a feeding tray (31) for placing tape and feeding tape out, and a winding tray (315) for winding up the tape protective film. The shearing die (2) includes an upper die (21), under which a punch (214) is installed. Below the punch (214) is a cutting plate (211) that cooperates with the punch (214). A cutting area (212) is opened at the position corresponding to the punch (214) on the cutting plate (211). A feeding channel (213) is provided on one side of the cutting plate (211) to transport the tape supplied by the feeding device (3) to the cutting area (212). The punch (214) is provided with a plurality of adsorption holes (215) for adsorbing the tape.

2. The taping apparatus for a lead frame according to claim 1, wherein The feeding device (3) also includes a feeder (32) located outside the shearing die (2) for feeding the tape in the feeding tray (31) into the shearing die (2).

3. The taping apparatus for a lead frame according to claim 2, wherein The feed tray (31) is provided with multiple support rods (311) that contact the inner ring of the tape on the outer side near the feeder (32), and the feed tray (31) is provided with movable parts (312) that contact the inner ring of the tape on the outer side.

4. The taping apparatus for a lead frame according to claim 2, wherein The feeder (32) includes a first motor (321), and a rotating shaft (322) is driven on one side of the first motor (321).

5. The taping apparatus for lead frames according to claim 4, wherein The feeder (32) also includes a flat plate (323), which is located on one side of the rotating shaft (322) and its top surface is parallel to the top of the rotating shaft (322). The flat plate (323) is provided with a movable stop (324).

6. The taping apparatus for lead frames of claim 1, wherein, The feed tray (31) has a movable part (312) on its outer side, which allows the movable part (312) to move away from or get closer to the tape. An elastic part (314) is provided between the connecting block (313) and the movable part (312).

7. The taping apparatus for lead frames of claim 1, wherein The shearing die (2) also includes a lower die (22), on which a heating element (221) is provided, and a lower pressing block (222) for placing the lead frame is also provided on the lower die (222), and the heating element (221) is used to heat the lower pressing block (222).

8. The taping device for lead frames of claim 1, wherein, The machine (1) is provided with a movable substrate (11), the feeding device (3) is movably disposed on the substrate (11), a CCD detection station (12) for detecting the lead frame after tape application is provided above the machine (1), and a pressure station (13) for reinforcing the bonding between the lead frame and the tape is provided above the machine (1).

9. A tape cutting apparatus characterized by comprising: Includes the tape applicator for lead frames as described in any one of claims 1-8.

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