A carrier tape pre-tearing film mechanism and pre-tearing film method and a carrier tape splicing machine

Abstract

The present invention discloses a carrier pre-tearing film mechanism, which is used to separate the covering film at the end of the carrier from the base tape, including a peeling piece, wherein the peeling piece has a peeling end for contacting the end of the carrier, and the peeling end is a non-smooth structure; a first driving component, which is connected to the peeling piece and drives the peeling piece to reciprocate; when the first driving component drives the peeling piece to move, the peeling end separates the covering film at the end of the carrier from the base tape. The carrier pre-tearing film mechanism can act on the covering film at the end of the carrier after the carrier is cut, so that the covering film of the carrier is initially separated from the base tape, so that in the subsequent patch process, the covering film of the carrier can be smoothly separated from the base tape, thereby improving the passing rate of the carrier. Further, the present invention also discloses a method for pre-tearing the carrier film and a carrier receiving machine using the above-mentioned carrier pre-tearing film mechanism.

Description

Technical Field

[0001] The invention relates to the technical field of carrier tape splicing equipment, and in particular to a carrier tape pre-film tearing mechanism and a pre-film tearing method and a carrier tape splicing machine. Background Art

[0002] Carrier Tape refers to a strip product used in the field of electronic packaging. It has a specific thickness and has holes for holding electronic components and positioning holes for indexing and positioning evenly distributed along its length. Carrier tape is mainly used in the electronic device mounting industry. When it carries electronic devices, the electronic devices are placed in the holes of the base tape and are encapsulated along the length of the base tape by a cover film or cover tape.

[0003] During SMT (Surface Mount Technology) patch processing, a feeder is used to absorb the electronic devices in the holes of the carrier tape for circuit electronic mounting. During the process of mounting the electronic devices, the covering film of the carrier tape needs to be torn off first so that the carrier tape can pass through the feeder smoothly. In addition, during SMT patch processing, the carrier tape holding the electronic devices needs to be fed continuously. Therefore, in the prior art, there is a material splicing device that connects two carrier tapes together to achieve uninterrupted feeding during SMT patch processing. However, during automatic splicing, it is often necessary to cut off the waste part of the carrier tape first. After the cut carrier tape, the splicing end of the carrier tape is adhered to the carrier tape base due to cutting. When the carrier tape passes through the patch machine after splicing, it is easy to be unable to tear the film smoothly due to the adhesion of the covering film at the splicing end to the carrier tape base tape; and due to the laminating process of the carrier tape itself, including the effect of hot printing or adhesive, the covering film will also be unable to be torn off smoothly. Summary of the invention

[0004] In order to solve the above technical problems, the present invention designs a pre-film tearing mechanism to pre-tear the film at the end of the carrier tape when the carrier tape is connected, so that during the patch processing, the feeder can smoothly tear the film of the carrier tape, thereby improving the carrier tape passing rate.

[0005] The present invention is achieved by adopting the following scheme:

[0006] A carrier tape pre-tearing mechanism, used for separating the cover film at the end of the carrier tape from the base tape, comprising:

[0007] A stripping piece, wherein the stripping piece has a stripping end for contacting the end of the carrier tape, and the stripping end is a non-smooth structure;

[0008] A first driving assembly drives the stripping member to perform reciprocating motion;

[0009] When the first driving assembly drives the stripping member to move, the stripping end drives the covering film at the end of the carrier tape to separate from the base tape.

[0010] Preferably, the movement direction of the stripping member includes a component parallel to the length direction of the carrier tape.

[0011] Preferably, a clamping member is further included, which is located on one side of the stripping member and is used to clamp the non-end portion of the carrier tape.

[0012] Preferably, the stripping end has a plurality of parallel arranged rolling teeth.

[0013] Preferably, the first driving component includes a motor, an eccentric wheel, and a connecting piece. The motor is fixedly mounted on a mounting plate, the eccentric wheel is fixedly connected to the output shaft of the motor, the connecting piece is hinged to the mounting plate, one end of the connecting piece is movably connected to the eccentric wheel, and the other end of the connecting piece is movably connected to the stripping piece.

[0014] More preferably, the stripping member is connected to a guide assembly, and the guide assembly guides the movement direction of the stripping member.

[0015] Preferably, the carrier tape pre-tearing mechanism further includes a second driving component, and the second driving component drives the peeling member to approach or separate from the end of the carrier tape.

[0016] The carrier tape pre-tearing mechanism of the present invention can act on the cover film at the end of the carrier tape after the carrier tape is cut, so that the cover film of the carrier tape is initially separated from the base tape, so that in the subsequent patch process, the cover film of the carrier tape can be smoothly separated from the base tape, thereby improving the pass rate of the carrier tape. The stripping member is driven by the first driving component to reciprocate back and forth, and the end of the carrier tape is agitated, rubbed or flanging to achieve the purpose of separating the cover film from the base tape.

[0017] Furthermore, the present invention also designs a carrier tape splicer, which includes any of the above-mentioned carrier tape pre-tearing mechanisms, and the splicer is used to connect the head end of the first carrier tape with the tail end of the second carrier tape together. The scheme includes a flow channel for guiding the first carrier tape and / or the second carrier tape to pass through, and any of the above-mentioned carrier tape pre-tearing mechanisms, wherein the carrier tape pre-tearing mechanism is used to pre-tear the film at the head end of the first carrier tape, and a yield groove is opened in the flow channel below the peeling member.

[0018] The material receiving machine changes the structure of the flow channel in the existing carrier tape receiving machine, so that when the carrier tape is pre-torn, the structure of the give way groove allows the end of the first carrier tape to be slightly suspended when the film is pre-torn. On the one hand, the flexible material of the carrier tape itself is relied on to prevent the covering film of the carrier tape from being torn, and on the other hand, the give way groove can also flexibly avoid the stroke of the peeling piece during operation.

[0019] Furthermore, the present invention also provides a method for pre-tearing a carrier film, the method comprising:

[0020] The peeling end of the peeling member is brought into contact with the end of the carrier tape;

[0021] The peeling end of the peeling piece and the end of the carrier tape generate slight pressure;

[0022] The stripping member is caused to reciprocate back and forth.

[0023] Preferably, the method further comprises making the peeling member move in a direction having a component parallel to the length direction of the carrier tape.

[0024] Preferably, the method further comprises leaving the end of the carrier tape suspended in the air.

[0025] In the method for pre-tearing the carrier tape of the present invention, the peeling piece performs reciprocating motion to frustrate, rub or flanging the end of the carrier tape, so as to achieve the purpose of separating the covering film from the base tape. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Cross-sectional view of an embodiment of the present invention with an empty carrier tape

[0027] Figure 2 Schematic diagram of the carrier structure after joining the materials in a specific embodiment of the present invention

[0028] Figure 3 Schematic diagram of the structure of the peeling member carrier tape covering film in a specific embodiment of the present invention

[0029] Figure 4 Schematic diagram of the structure in which the peeling end of the peeling member contacts the carrier tape cover film in a specific embodiment of the present invention

[0030] Figure 5 Schematic diagram of the overall structure of the carrier tape pre-tear film mechanism in a specific embodiment of the present invention

[0031] Figure 6 Schematic diagram of the partial structure of the carrier tape pre-tear film mechanism in a specific embodiment of the present invention

[0032] Figure 7 Schematic diagram of partial structural decomposition of the carrier tape pre-tear film mechanism in a specific embodiment of the present invention

[0033] Figure 8 Rear view of the overall structure of the carrier tape pre-tear film mechanism in a specific embodiment of the present invention

[0034] In the figure, 10 is a stripping piece, 101 is a stripping end, and 11 is a pressing piece.

[0035] 20 first driving mechanism, 201 motor, 202 eccentric wheel, 203 connecting piece, 204 bearing, 205 bearing

[0036] 30 mounting plate, 31 fixing block, vertical plate 32

[0037] 41 guide rod,

[0038] 50 electromagnet assembly, 506 lower limit block, 507 sensor, 508 shielding sheet

[0039] 60 carrier tape, 60a empty section, 601 base tape, 6011 pocket, 602 cover film,

[0040] 61 first carrier tape, 62 second carrier tape, 63 splicing film

[0041] 70 flow channel, 71 clearance groove DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0043] like Figure 1 , is a cross-sectional view of a carrier tape 60, which includes a base tape 601 and a cover film 602 for packaging a pocket 6011 in the base tape. The reel-type carrier tape often has empty sections 60a at the beginning and end of the carrier tape. In order to ensure uninterrupted feeding of the carrier tape during the SMT process, the empty sections 30a of the carrier tape need to be cut off and two sections of the carrier tape with material are connected together. Figure 2 , after the carrier tape is spliced, the head end of a new first carrier tape 61 is connected to the tail end of the second carrier tape 62 on the feeder through the splicing film 63. When using the SMT feeder to feed the SMT machine, the covering film on the carrier tape needs to be torn off first. After the first carrier tape 61 and the second carrier tape 62 are spliced, the covering film at the tail end of the second carrier tape 62 is torn off at the same time, and the covering film at the head end of the first carrier tape 61 is torn off through the bonding effect of the splicing film 63, so that the carrier tape can be smoothly passed through the SMT machine. In view of the material of the carrier covering film, the strength of its adhesion to the carrier base tape, the strength of the bonding between the splicing film and the carrier covering film during splicing, the possible slight deformation of the carrier covering film during splicing and cutting, and the influence of various factors such as the carrier material itself due to processes such as hot pressing or bonding, after the first carrier tape and the second carrier tape are spliced, the covering film at the head end of the first carrier tape often cannot be torn off smoothly. Therefore, the head end of the first carrier tape needs to be pre-torn after the carrier tape is cut and before the splicing.

[0044] The pre-film tearing mechanism used in this embodiment includes a peeling member 10. Figure 3 The stripping member 10 has a stripping end 101 that can contact the end of the first carrier tape. The stripping end is a non-smooth structure. The stripping member is connected to a first driving component. The first driving component can drive the stripping member to reciprocate back and forth. The stripping member reciprocates and relies on the pressure or friction or flanging or angle effect between the stripping end and the first carrier tape to force the covering film at the end of the first carrier tape to separate from the base tape.

[0045] In order to achieve a better pre-tearing effect, the movement direction of the peeling member may include a component parallel to the length of the first carrier tape, such as Figure 4 In this scheme, when the stripping member reciprocates back and forth, the stripping end and the end of the first carrier tape are subjected to several repeated forward flattening and reverse scraping actions, so as to achieve a better separation effect between the cover film at the end of the first carrier tape and the base tape.

[0046] Further, if Figure 4 As shown, the peeling end of the peeling piece may have a cut surface A in contact with the end of the first carrier tape, and the cut surface A may be a solid surface or a virtual surface, a plane or an arcuate surface, and the cut surface has an inclination angle with the plane of the carrier tape substrate, and the inclination angle is between 0 and 90° (excluding 0° and 90°), so that the end of the carrier tape can achieve the effect of pre-tearing the film. Specifically, the peeling end of the peeling piece can be set to an irregular rough structure or a regular tooth-rolling pattern structure, and the peeling end appears as a plane, an arcuate surface or even a circular knurled surface in the macroscopic view.

[0047] Furthermore, in a preferred implementation, the peeling end of the peeling member may be provided with a plurality of parallelly arranged rolling teeth, and the rolling tooth structure faces the first carrier tape, such as Figure 4 Furthermore, the tooth-rolling structure can be configured as a hook-shaped tooth-rolling structure, in which, during the movement of the stripping member, the tip of any tooth can slightly extend into between the covering film at the head end of the first carrier tape and the base tape, and when the stripping member moves, the tooth-rolling belt lifts the covering film, so that the carrier tape completes the separation of the covering film and the base tape.

[0048] In order to achieve a better effect of pre-tearing the film of the carrier tape and to adapt to carrier tapes of different thicknesses or cover films of different thicknesses, the moving direction of the peeling member can have a small angle with the plane where the plurality of rolling teeth are located. When the peeling member pre-teares the film in the reverse direction, the peeling member and the end of the carrier tape are getting closer or pressed, and at the same time, the peeling end of the peeling member exerts a gradually increasing force on the end of the carrier tape, and the rolling teeth located at the far end of the peeling member can complete the film-opening effect on the end of the carrier tape.

[0049] like Figure 6 and Figure 7, is a specific embodiment of the pre-tearing film mechanism. The pre-tearing film mechanism includes a stripping member 10 and a first driving assembly 20, as well as a mounting plate 30. The first driving assembly 20 includes a motor 201, an eccentric wheel 202 and a connecting member 203. The motor 201 is fixedly mounted on the mounting plate 40, the eccentric wheel 202 is fixedly connected to the output shaft of the motor 201, the connecting member 203 has a hinge position, which is used to be hinged on a fixed block 31 fixed to the mounting plate 30, and the connecting member 203 also has a first movable connecting end and a second movable connecting end, the first movable connecting end is used to be movably connected to the eccentric wheel 202 through a bearing connected to the eccentric wheel, and the second movable connecting end is used to be movably connected to the stripping member 201 through a bearing connected to the stripping member 201. When the motor is working, it drives the eccentric wheel to rotate, so that the connecting member 203 swings around the hinge, thereby driving the stripping member to move. In order to make the peeling member move in a fixed direction, the pre-film peeling mechanism further includes a guide assembly. In this embodiment, the guide assembly includes a guide rod 41, and a guide hole is provided on the mounting plate. The guide hole of the mounting plate and the guide rod 41 jointly guide the movement direction of the peeling member, so that the peeling member moves in a certain direction. In other embodiments, the guide assembly can also be set as a slider, so that the peeling member moves in a certain direction.

[0050] In other embodiments, the connecting member may be directly fixedly connected to the stripping member 10, and the same effect may be achieved by driving the connecting member to move through an eccentric wheel and a motor and being guided by a guide assembly.

[0051] It should be noted that the first driving assembly is not limited to the motor and eccentric wheel structure, and can also be set as other power mechanisms that can drive the stripping member to move in a certain direction, such as cylinder push or gear motor and rack meshing mechanisms.

[0052] During the film tearing process, a situation may occur. Since the carrier tape is made of flexible material, the position near the end of the carrier tape may be bent, warped or arched. Therefore, the pre-film tearing mechanism also includes a clamping member, which is located on one side of the stripping member. In the present embodiment, the clamping member is configured as a pressing member 11 that can press the carrier tape. The pressing member 11 works together with the flow channel 70 of the material receiving machine to press or clamp the non-end of the carrier tape. It is close to the stripping member, and the clamping member clamps or presses the non-end of the first carrier tape. Furthermore, the lowest point of the pressing member 11 is not lower than the lowest point of the stripping member 10, which can prevent the pressing member from being pressed too low so that the stripping member cannot contact the end of the carrier tape. In other embodiments, the clamping member can be configured as other structures that can clamp and fix the carrier tape.

[0053] The pre-tear film mechanism of this embodiment can be installed on the carrier tape feeder. In order for the film tearing mechanism to not affect the subsequent process after the film tearing is completed, it is necessary to move the stripping member away from the end position of the first carrier tape. Therefore, the pre-tear film mechanism of this embodiment may also include a second drive assembly, which is set as an electromagnet assembly 50. Specifically, the electromagnet of the electromagnet assembly has a fixed part and a movable part. In one embodiment, the fixed part can be a coil winding, and the movable part can be an iron core. In another embodiment, the fixed part can be set as a connecting part fixedly connected to the coil winding, and the movable part can be a connecting part connected to the iron core. The fixed part of the electromagnet assembly is fixedly set at the upper end of a fixed vertical plate 32 through an electromagnet mounting plate, and the lower end of the movable part of the electromagnet assembly is connected to the mounting plate 31 through a connecting block, and the mounting plate 31 and the vertical plate 32 are connected by a slide rail and a slider. In which, the movable part of the electromagnet assembly can be fixedly connected to the connecting block, or can be hingedly connected, and the movable part of the electromagnet assembly is connected to the fixed part with a spring, and the spring drives the movable part to drive the pre-tear film assembly to reset.

[0054] The pre-tear film mechanism also includes an upper limit block and a lower limit block 506, which are fixedly installed on the vertical plate 32 respectively. The upper limit block performs an upper limit on the mounting plate 30, and the lower limit block performs a lower limit on the mounting plate 30.

[0055] Furthermore, in this embodiment, a sensor assembly is also provided to sense the position of the pre-tear film assembly. Specifically, the sensor 507 of the sensor assembly is fixedly mounted on the vertical plate 32, and the shielding sheet 508 of the sensor is fixedly mounted on the mounting plate 30, and the shielding sheet is used to shield the sensor.

[0056] It should be noted that in this embodiment, the driving component that drives the movable mounting plate and the pre-tear film component to move up and down is set as an electromagnet component, but without departing from the essential content of the utility model, other mechanisms that can realize the driving and moving function, such as a motor-driven eccentric wheel mechanism, a motor gear rack transmission mechanism, a motor screw transmission mechanism, etc., can be used as alternative solutions.

[0057] The above-mentioned carrier tape pre-tearing mechanism can tear the film in the following way:

[0058] The peeling end of the peeling member is brought into contact with the end of the carrier tape;

[0059] The peeling end of the peeling piece and the end of the carrier tape generate slight pressure;

[0060] The stripping member is caused to reciprocate back and forth.

[0061] The method further includes making the direction in which the peeling member moves have a component parallel to the length direction of the carrier tape.

[0062] The method further includes leaving the end of the carrier tape suspended in the air.

[0063] The carrier tape pre-tearing mechanism can be used as a part of the carrier tape splicer, and is used to connect the head end of the first carrier tape and the tail end of the second carrier tape together. Specifically, the pre-tearing mechanism is connected to the flow channel 70, and the flow channel is used to guide the first carrier tape and / or the second carrier tape to pass through. The carrier tape pre-tearing mechanism is used to pre-tear the film at the head end of the first carrier tape, and a clearance groove 71 is opened in the flow channel 70 below the peeling member 10.

[0064] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A carrier tape pre-tearing mechanism, used to separate the cover film at the end of the carrier tape from the base tape, characterized in that: include: A stripping piece, wherein the stripping piece has a stripping end for contacting the end of the carrier tape, and the stripping end is a non-smooth structure; A first driving assembly is connected to the stripping member and drives the stripping member to reciprocate; the first driving assembly includes a motor, an eccentric wheel, and a connecting member, the motor is fixedly mounted on a mounting plate, the eccentric wheel is fixedly connected to the output shaft of the motor, the connecting member is hinged to the mounting plate, one end of the connecting member is movably connected to the eccentric wheel, and the other end of the connecting member is movably connected to the stripping member, the stripping member is connected to a guide assembly, and the guide assembly guides the movement direction of the stripping member; When the first driving component drives the stripping member to move, the stripping end separates the covering film at the end of the carrier tape from the base tape; The stripping end has a plurality of parallel arranged rolling teeth, each of which is a hook-shaped structure. The tip of the rolling teeth can slightly extend between the covering film at the end of the carrier tape and the base tape. When the first driving component drives the stripping member to reciprocate, the rolling teeth separate the covering film at the end of the carrier tape from the base tape through several repeated forward flattening and reverse scraping actions.

2. The carrier tape pre-tearing mechanism according to claim 1, characterized in that: The moving direction of the peeling member includes a component parallel to the length direction of the carrier tape.

3. The carrier tape pre-tearing mechanism according to claim 1 or 2, characterized in that: The stripping device also includes a clamping member, which is located on one side of the stripping member and is used for clamping the non-end portion of the carrier tape.

4. The carrier tape pre-tearing mechanism according to claim 1 or 2, characterized in that: The pre-tear film mechanism also includes a second driving component, and the second driving component drives the peeling member to approach or separate from the end of the carrier tape.

5. A carrier tape splicer, used to splice the head end of a first carrier tape and the tail end of a second carrier tape together, characterized in that: It includes a flow channel for guiding the first carrier tape and / or the second carrier tape to pass through, and a carrier tape pre-tearing mechanism as described in any one of claims 1-4, wherein the carrier tape pre-tearing mechanism is used to pre-tear the film at the head end of the first carrier tape, and the flow channel is provided with a yield groove below the peeling member.

6. A method for pre-tearing a carrier film, characterized in that: The method is used for the carrier tape pre-tearing mechanism according to any one of claims 1 to 4, and the method comprises: The peeling end of the peeling member is brought into contact with the end of the carrier tape; The peeling end of the peeling piece and the end of the carrier tape generate slight pressure; The stripping member is caused to reciprocate back and forth.

7. The method for pre-tearing a carrier film according to claim 6, characterized in that: The method further includes causing the peeling member to move in a direction having a component parallel to a length direction of the carrier tape.

8. The method for pre-tearing a carrier film according to claim 6 or 7, characterized in that: The method further includes leaving the end of the carrier tape suspended.

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