CN112893716A

CN112893716A - Foot cutting device

Info

Publication number: CN112893716A
Application number: CN202110316559.5A
Authority: CN
Inventors: 陆新荣; 刘贵荣; 孙太喜
Original assignee: Guangdong Beishi Dake Technology Co ltd
Current assignee: Guangdong Beishi Dake Technology Co ltd
Priority date: 2021-03-23
Filing date: 2021-03-23
Publication date: 2021-06-04

Abstract

The application relates to a pin cutting device for cutting pins of electronic components, which comprises a driving piece, a lever mechanism, an upper cutting die, a lower cutting die, a material piece fixing seat and a base, wherein the material piece fixing seat is fixed on the base and used for placing the electronic components; the lever mechanism is rotationally connected to the base, one end of the lever mechanism is in transmission connection with the driving piece, the other end of the lever mechanism is in transmission connection with the upper cutting die, and the lever mechanism rotates relative to the base and drives the upper cutting die to move under the driving of the driving piece; the upper cutting die comprises a cutter, the lower cutting die is provided with a cutting groove corresponding to the cutter, and when the upper cutting die is close to the lower cutting die, the cutter enters the cutting groove to finish cutting of the pins of the electronic components. The driving force is provided through the driving piece, the lever mechanism is used for driving the upper cutting die to move, the pins are cut, the structure is simple, the cost is lower, only manual discharging is needed, the operation is simple, and the processing efficiency and the cost are both considered.

Description

Foot cutting device

Technical Field

The application relates to the field of machining, in particular to a foot cutting device.

Background

Transistors typically have long leads when they are supplied. In the course of working, the transistor need weld the welding position to the PCB board, because the requirement of different PCB boards, the length of transistor demand differs, and the pin length of the transistor of supplied materials often exceeds demand length, therefore, need cut the foot to the transistor, traditionally, accomplish the cutting of transistor pin through manpower cooperation machine, or cut by pure manual work, the efficiency of these two kinds of modes is all lower, also can introduce full-automatic cutting foot on the processing assembly line, however, this promotion generate cost that will be very big, it is inadvisable to the mill. Therefore, how to realize the cutting of the transistor pins with low cost and high efficiency is a key problem.

Disclosure of Invention

In view of the above, it is necessary to provide a pin trimming apparatus for achieving the trimming of the transistor pins with low cost and high efficiency.

A pin cutting device for cutting pins of electronic components comprises a driving piece, a lever mechanism, an upper cutting die, a lower cutting die, a material sheet fixing seat and a base, wherein,

the material sheet fixing seat is fixed on the base and used for placing electronic components;

the lever mechanism is rotationally connected to the base, one end of the lever mechanism is in transmission connection with the driving piece, the other end of the lever mechanism is in transmission connection with the upper cutting die, and the lever mechanism rotates relative to the base under the driving of the driving piece and drives the upper cutting die to move;

the upper cutting die comprises a cutter, the lower cutting die is provided with a cutting groove corresponding to the cutter, and when the upper cutting die is close to the lower cutting die, the cutter enters the cutting groove to finish cutting of the pins of the electronic components.

In one embodiment, the device further comprises a limiting pin, a first moving part and a second moving part, wherein,

the limiting pin is fixedly connected to the upper cutting die and moves along with the movement of the upper cutting die;

the first moving part and the second moving part are movably connected to the material sheet fixing seat, and when the limiting pin moves along with the upper cutting die, the first moving part and the second moving part are driven to move relative to the material sheet fixing seat.

In one embodiment, a chute is arranged on the material sheet fixing seat, the cutting knife is arranged opposite to the chute, and an avoidance groove is arranged at the bottom of the chute corresponding to the limiting pin;

the first moving piece is arranged in the sliding groove and can slide in the sliding groove, a through groove is formed in the first moving piece, and the through groove is communicated with the avoidance groove;

the second moving piece is arranged in the through groove and can slide in the through groove.

In one embodiment, the stop pin has a preset length, and the length of the stop pin satisfies: the time of inserting the limiting pin into the avoiding groove is prior to the time of entering the cutting knife into the cutting groove.

In one embodiment, one end of the limiting pin close to the material sheet fixing seat is provided with a wedge shape, and one end of the second moving part close to the limiting pin is provided with a wedge-shaped surface.

In one embodiment, the material sheet fixing seat further comprises a baffle fixedly connected to the material sheet fixing seat, the baffle is covered on the sliding chute, the second moving part is at least partially located below the baffle, and the baffle is used for preventing the first moving part and the second moving part from being separated from the sliding chute.

In one embodiment, the cutting device further comprises a first connecting rod assembly and a second connecting rod assembly, one end of the first connecting rod assembly is rotatably connected to the lever mechanism, the other end of the first connecting rod assembly is rotatably connected to the upper cutting die, and one end of the lever mechanism, which is far away from the driving piece, is connected to the upper cutting die through the first connecting rod assembly;

one end of the second connecting rod assembly is rotatably connected with the driving piece, the other end of the second connecting rod assembly is rotatably connected with the lever mechanism, and one end of the lever mechanism, which is close to the driving piece, is connected with the driving piece through the second connecting rod assembly.

In one embodiment, the cutting device further comprises a first guide piece, the first guide piece is fixed on the base, the lower cutting die is provided with a first through hole corresponding to the first guide piece, the upper cutting die is provided with a second through hole corresponding to the first guide piece, the first guide piece penetrates through the first through hole and the second through hole, and in the process that the driving piece drives the upper cutting die to move, part of the first guide piece is located in the second through hole all the time.

In one embodiment, the electronic component cutting device further comprises a discharging mechanism, wherein the discharging mechanism comprises a discharging seat and a pushing rod, the discharging seat is fixed on the base and/or the material sheet fixing seat, and the pushing rod is connected to the discharging seat in a sliding mode and used for pushing the electronic component away from the cutting position after the legs are cut.

In one embodiment, a waste collecting groove is arranged on the base corresponding to the cutting groove and communicated with the cutting groove for collecting the cut pins; the waste collecting tank is provided with an outlet, and the cut pins enter the waste collecting tank and flow out of the outlet.

Above-mentioned cut foot device provides drive power through the driving piece, borrows lever mechanism, and the motion of cutting die in the drive cuts the pin, simple structure, and the cost is lower, only need manual blowing can, easy operation has compromise machining efficiency and cost.

Drawings

FIG. 1 is a schematic diagram of a material supply transistor;

fig. 2 is a schematic structural diagram of a foot cutting device according to an embodiment of the present application;

fig. 3 is an exploded view of a foot cutting device according to an embodiment of the present application;

fig. 4 is a schematic view of a partial explosion structure of a foot cutting device according to an embodiment of the present application;

fig. 5 is an exploded view of a foot cutting device according to another embodiment of the present application.

Detailed Description

To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are given in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, fig. 1 schematically illustrates a structure of a transistor 800, wherein the transistor 800 includes a transistor body 810 and a lead 820, and the lead 820 is led out from the transistor body 810. When a fabrication plant receives an incoming transistor 800, the transistors 800 are fixed to each other and arranged in a row. For example, the two transistors 800 are fixed by a thin and brittle sheet structure, and when the transistors 800 are separated, the transistors 800 need only be bent slightly. When the material is supplied, the pin 820 of the transistor 800 has a long length, and can be attached to the PCB after being cut.

Referring to fig. 2, fig. 2 schematically illustrates a structural diagram of a pin trimming apparatus 10 according to an embodiment of the present application, where the pin trimming apparatus 10 is used for trimming pins of electronic components, and the electronic components are not limited to the transistors described above, and may also be other components such as capacitors.

As shown in fig. 2, the leg cutting device 10 includes a driving member 101, a lever mechanism 102, an upper cutting die 103, a lower cutting die 104, and a tablet holder 105, wherein the driving member 101 drives the upper cutting die 103 to move through the lever mechanism 102, so as to lift or drop the upper cutting die 103. Electronic components such as transistors are placed on the tablet fixing seat 105, and when the electronic components are placed on the tablet fixing seat 105, pins of the electronic components at least partially extend between the upper cutting die 103 and the lower cutting die 104. When the upper cutting die 103 is close to the lower cutting die 104, the pin between the upper cutting die 103 and the lower cutting die 104 is cut.

The driver 101 is used to provide a driving force. In some embodiments, the drive member 101 may employ a pneumatic cylinder to achieve low cost driving. Of course, the lever mechanism 102 can be driven by a driver such as a motor or a steering engine.

The driving member 101 is fixed at a predetermined position, for example, the foot cutting device 10 further includes a base 106, and the driving member 101 is fixed on the base 106. In the embodiment shown in fig. 2, the base 106 is provided with a fixing post 161, and the driving member 101 is fixed on the fixing post 161 to fix the driving member 101 at a higher position, thereby providing a sufficient space for the movement of the lever mechanism 102.

With continued reference to fig. 3 and fig. 4, the driving member 101 is connected to the lever mechanism 102 in a transmission manner, the lever mechanism 102 is connected to the base 106 in a rotation manner, and the lever mechanism 102 rotates relative to the base 106 under the driving of the driving member 101, and drives the upper cutting die 103 to move. In one or more embodiments, the base 106 is provided with a reference member 163, and the lever mechanism is rotatably connected to the reference member 163, and one end of the lever mechanism is drivingly connected to the driving member 101, and the other end is rotatably connected to the lower cutting die 104. When the driving member 101 works, one end of the driving lever mechanism moves, and since the middle part of the lever mechanism 102 is fixed and is rotatably connected to the reference member 163, based on the lever principle, the moving direction of one end of the lever mechanism 102 far away from the driving member 101 is opposite to the moving direction of one end close to the driving member 101, so as to drive the upper cutting die 103 to move.

In the embodiment shown in fig. 4, the reference member 163 is provided with a groove 163a, two sides of the groove 163a form a support ear 1631, and the lever mechanism is rotatably connected to the support ear 1631, so that the groove 163a provides a space for the movement of the lever mechanism 102. For example, the support ear 1631 is provided with a first small hole, and the lever mechanism 102 is provided with a first convex pillar, and the first convex pillar is embedded into the first small hole, so that the lever mechanism 102 is rotatably connected to the reference member 163. In some embodiments, the recess 163a may extend completely through the reference member 163, such that the reference member 163 includes two independent support lugs 1631, and the two support lugs 1631 are fixed to the base 106.

The upper cutting die 103 is drivingly connected to an end of the lever mechanism 102 remote from the driving member 101. In one or more embodiments, the foot cutting device 10 further comprises a first link assembly 107, and the end of the lever mechanism 102 remote from the driving member 101 is connected to the upper cutting die 103 through the first link assembly 107. By providing the first link assembly 107, the upper cutting die 103 can be driven more flexibly.

Specifically, one end of the first link assembly 107 is rotatably connected to the lever mechanism 102, and the other end of the first link assembly 107 is rotatably connected to the upper cutting die 103, so that the first link assembly 107 can rotate relative to the lever mechanism 102 and also rotate relative to the upper cutting die 103, thereby avoiding hard driving of the lever mechanism 102 on the upper cutting die 103, providing buffering through the link mechanism, enabling the upper cutting die 103 to move along a straight line instead of an arc line, and being more beneficial to cutting pins.

In the embodiment shown in fig. 4, the first link assembly 107 includes two first links 171, and the two first links 171 are respectively located at two sides of the lever mechanism 102 and rotatably connected to the lever mechanism 102. The two first links 171 can transmit the driving force more uniformly and stably.

Referring to fig. 4, in some embodiments, a second link assembly 108 may be further included, and an end of the lever mechanism 102 near the driving member 101 is connected to the driving member 101 through the second link assembly 108. For example, similar to the first link assembly 107, the second link assembly 108 has one end pivotally connected to the driver 101 and the other end pivotally connected to the lever mechanism 102.

Referring to fig. 3 and 4, the upper cutting die 103 includes a cutting portion 131 and a connecting portion 133, the cutting portion 131 is fixedly connected to the connecting portion 133, the cutting portion 131 is used for completing the cutting of the lead in cooperation with the lower cutting die 104, and the connecting portion 133 is rotatably connected to the first link assembly 107. For example, the connection part 133 is provided with a first protrusion 1331, and the two first links 171 are respectively positioned at both sides of the first protrusion 1331 and rotatably connected to the first links 171.

The cutting part 131 is provided with a cutter 1311 to cut the pin by the cutter 1311. In a specific embodiment, the cutting portion 131 includes a cutting plate 1313 and a cutter 1311, the connecting portion 133 is disposed on the cutting plate 1313, and the cutter 1311 is disposed on a side of the cutting plate 1313 away from the connecting portion 133, so that the lever mechanism 102 drives the connecting portion 133 to move, and then drives the cutter 1311 to move.

Referring to fig. 2 and 3, the lower cutting die 104 is fixed on the base 106, and the lower cutting die 104 is kept stationary relative to the base 106 during the cutting process. Therefore, the lower cutting die 104 is fixed, and the upper cutting die 103 moves, so that stable and accurate cutting can be realized. The lower die 104 is provided with a cutting groove 104a corresponding to the cutter 1311, and when the upper die 103 is close to the lower die 104, the cutter 1311 enters the cutting groove 104a, and at this time, if the leads of the electronic component are suspended on the cutting groove 104a, the cutter 1311 cuts the leads when entering the cutting groove 104 a.

Referring to fig. 3 and 4, in one or more embodiments, the foot cutting device 10 further includes a first guiding member 109, and the first guiding member 109 is fixedly connected to at least one of the base 106 and the lower cutting die 104, and is used for providing a guide for the movement of the upper cutting die 103, so that the upper cutting die 103 moves along a track defined by the first guiding member 109. For example, in the illustrated embodiment, the first guiding element 109 is fixed on the base 106, the lower die 104 is provided with a first through hole 104b corresponding to the first guiding element 109, the upper die 103 is provided with a second through hole 103a corresponding to the first guiding element 109, the first guiding element 109 passes through the first through hole 104b and the second through hole 103a, and during the driving element 101 drives the upper die 103 to move, the first guiding element 109 is always partially located in the second through hole 103 a. That is, the first guide 109 always provides a limit guide function for the upper cutting die 103.

The sheet holder 105 is fixed to the base 106 for placing electronic components, and when the electronic components are placed on the sheet holder 105, at least a part of the leads are located on the lower cutting die 104 and suspended above the cutting grooves 104a of the lower cutting die 104. When the electronic components are placed on the sheet fixing base 105, if the electronic components are not fixed, the electronic components may be displaced by force during the pin cutting process, and thus, in order to ensure the cutting accuracy, it is preferable to fix the electronic components during the cutting process.

Referring to fig. 5, in one or more embodiments, the foot cutting device 10 may further include a stopper pin 110, a first moving member 111, and a second moving member 112, the stopper pin 110 is fixedly connected to the upper cutting die 103 and moves along with the movement of the upper cutting die 103, the first moving member 111 and the second moving member 112 are movably connected to the material sheet fixing seat 105, and when the stopper pin 110 moves along with the upper cutting die 103, the first moving member 111 and the second moving member 112 are driven to move relative to the material sheet fixing seat 105.

In one embodiment, the material sheet holder 105 is provided with a sliding groove 105a, the cutting knife 1311 is disposed opposite to the sliding groove 105a, and the bottom of the sliding groove 105a is provided with an avoiding groove 105b corresponding to the stopper pin 110. The first moving member 111 is disposed in the sliding groove 105a and is slidable in the sliding groove 105a, and a through groove 111a is disposed in the first moving member 111, and the through groove 111a communicates with the avoidance groove 105 b. The second moving member 112 is disposed in the through groove 111a and is slidable in the through groove 111 a.

When the upper cutting die 103 moves towards the direction close to the lower cutting die 104, the limiting pin 110 moves towards the direction close to the tablet fixing seat 105 and penetrates through the through groove to enter the avoiding groove 105b, when the limiting pin 110 penetrates through the through groove, the second moving part 112 is driven to move in the through groove, when the second moving part 112 moves to the position of abutting against the side wall of the through groove, the second moving part 112 cannot move relative to the first moving part 111, therefore, the second moving part 112 drives the first moving part 111 to move, so that the first moving part 111 and the second moving part 112 slide along the sliding groove 105a together, the electronic component is placed corresponding to the sliding groove 105a, and when the first moving part 111 moves to the position contacting with the electronic component, the electronic component is clamped between the first moving part 111 and the lower cutting die 104. Taking a transistor as an example, the transistor body has a larger volume, and the pin is thin, and a shoulder is formed at one side where the pin is arranged, so when the electronic component is placed on the tablet fixing seat 105, one side of the pin of the transistor body abuts against the lower cutting die 104, and thus, when the first moving member 111 slides out in the sliding groove 105a, one side of the transistor body far away from the pin abuts against the transistor body, so that the transistor body is clamped and fixed without displacement. Thereby achieving the fixing of the transistor.

In some embodiments, the cutting device further comprises a connecting rod 113, and the limit pin 110 is fixedly connected to the upper cutting die 103 through the connecting rod 113.

In one or more embodiments, the stop pin 110 has a predetermined length, and the length of the stop pin 110 satisfies: the stopper pin 110 is inserted into the escape groove 105b earlier than the cutter 1311 enters the notch groove 104 a. Therefore, the electronic components are fixed firstly and then cut, and the cutting precision is improved.

One end of the limit pin 110, which is close to the tablet fixing seat 105, may be set to be wedge-shaped, and one end of the second moving member 112, which is close to the limit pin 110, may also be provided with a wedge-shaped surface, which may provide a guiding effect for the insertion of the limit pin 110, while avoiding the hard contact of the limit pin 110 and the second moving member 112, even if the position of the second moving member 112 is slightly deviated, the second moving member 112 may be moved away by the wedge-shaped contact, and the limit pin 110 is inserted into the avoiding groove 105 b.

In one or more embodiments, the material sheet fixing seat 105 is fixedly connected with a baffle 114, the baffle 114 is covered on the sliding chute 105a, the second moving part 112 is at least partially positioned below the baffle 114, and the baffle 114 is used for preventing the first moving part 111 and the second moving part 112 from being separated from the sliding chute 105 a.

Referring to fig. 2, in one or more embodiments, the discharging mechanism 115 further includes a discharging seat 1151 and a material pushing rod 1153, the discharging seat 1151 is fixed on the base 106 and/or the material sheet fixing seat 105, and the material pushing rod 1153 is slidably connected to the discharging seat 1151, and is used for pushing the electronic component away from the cutting position after the electronic component is cut, so as to facilitate material taking.

Referring to fig. 3, in one or more embodiments, a waste collection groove 106a is disposed on the base 106 corresponding to the slot 104a, and the waste collection groove 106a is connected to the slot 104a for collecting the cut pins. The waste collection tank 106a is provided with an outlet, and the cut pins enter the waste collection tank 106a and flow out of the outlet.

When the pin cutting device 10 is used to cut the pins of the electronic component, the electronic component is first placed at the opening of the chute 105a and at the position corresponding to the cutter 1311, and after the electronic component is placed, the pins partially hang above the cutter 1311. Then, the first moving member 111 can be pushed slightly to make the first movable detector contact with the electronic component. Then, the driving member 101 starts to operate, the driving force provided causes one end of the lever mechanism 102 far away from the upper cutting die 103 to move upwards, and based on the lever principle, one end of the lever mechanism 102 close to the upper cutting die 103 moves downwards, so as to drive the upper cutting die 103 to move close to the lower cutting die 104. When the upper cutting die 103 moves down to the preset position, the limiting pin 110 is inserted into the avoiding groove 105b, and then is inserted into the avoiding groove 105b, so that the first moving part 111 and the second moving part 112 are driven to move, the first moving part 111 and the second moving part 112 tightly abut against the electronic component, and the electronic component is clamped and fixed between the first moving part 111 and the lower cutting die 104. The upper die 103 moves downwards continuously, and the cutter 1311 enters the cutter 1311 to cut the pins.

Therefore, the foot cutting device 10 provides driving force through the driving piece 101, the lever mechanism 102 is used for driving the upper cutting die 103 to move, the pins are cut, the structure is simple, the cost is low, only manual discharging is needed, the operation is simple, and the processing efficiency and the cost are both considered.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A pin cutting device for cutting pins of electronic components is characterized by comprising a driving piece, a lever mechanism, an upper cutting die, a lower cutting die, a material sheet fixing seat and a base, wherein,

2. A foot cutting device according to claim 1, further comprising a stopper pin, a first moving member and a second moving member, wherein,

3. The foot cutting device according to claim 2, wherein a sliding groove is formed in the material sheet fixing seat, the cutting knife is arranged opposite to the sliding groove, and an avoiding groove is formed in the bottom of the sliding groove and corresponds to the limiting pin;

4. A foot cutting device according to claim 3, wherein the stop pin has a preset length, and the length of the stop pin satisfies: the time of inserting the limiting pin into the avoiding groove is prior to the time of entering the cutting knife into the cutting groove.

5. A foot cutting device according to claim 3, wherein one end of the limiting pin close to the material sheet fixing seat is provided with a wedge shape, and one end of the second moving member close to the limiting pin is provided with a wedge surface.

6. A foot cutting device according to claim 3, further comprising a baffle fixedly connected to the sheet holder, covering the chute, the second moving member being at least partially located below the baffle, the baffle being configured to prevent the first moving member and the second moving member from disengaging the chute.

7. The foot cutting device according to claim 1, further comprising a first link assembly and a second link assembly, wherein one end of the first link assembly is rotatably connected to the lever mechanism, the other end of the first link assembly is rotatably connected to the upper cutting die, and one end of the lever mechanism, which is far away from the driving member, is connected to the upper cutting die through the first link assembly;

8. The leg cutting device according to claim 1, further comprising a first guide member fixed to the base, wherein the lower cutting die is provided with a first through hole corresponding to the first guide member, wherein the upper cutting die is provided with a second through hole corresponding to the first guide member, wherein the first guide member passes through the first through hole and the second through hole, and wherein the first guide member is always partially positioned in the second through hole during the driving of the upper cutting die by the driving member.

9. The leg cutting device according to claim 1, further comprising a discharging mechanism, wherein the discharging mechanism comprises a discharging seat and a pushing rod, the discharging seat is fixed on the base and/or the material sheet fixing seat, and the pushing rod is connected to the discharging seat in a sliding mode and used for pushing the electronic component away from the cutting position after the legs are cut.

10. The foot cutting device according to claim 1, wherein a waste collecting groove is arranged on the base corresponding to the cutting groove, and the waste collecting groove is communicated with the cutting groove and used for collecting the cut pins; the waste collecting tank is provided with an outlet, and the cut pins enter the waste collecting tank and flow out of the outlet.