Circuit board pin shearing device

Abstract

The utility model discloses a circuit board pin shearing device, which relates to the field of circuit boards and comprises a heat conducting plate, a bottom plate, a movable plate, a support column, a thermal expansion ring, a positioning block and a driving device, the driving device drives the movable plate to slide along a horizontal straight line, the positioning block is arranged on the upper surface of the heat conducting plate, and the heat conducting plate is arranged right above the movable plate through the support column. The bottom plate is detachably arranged at the lower end of the heat conducting plate, a first through hole is formed in the upper surface of the heat conducting plate, a second groove is formed in the lower surface of the heat conducting plate, a third through hole is formed in the bottom plate, a fourth through hole is formed in the movable plate, and the thermal expansion rings are arranged in the second groove in a one-to-one correspondence mode. A lower shearing bulge is convexly arranged at one end, close to the heat conducting plate, of the inner wall of the fourth through hole. During shearing, the roots of the pins are clamped and fixed, multiple pins can be sheared at a time, a complex structure does not need to be disassembled and assembled, and the pin shearing efficiency is effectively improved.

Description

Technical Field

[0001] The utility model relates to the field of circuit boards, in particular to a circuit board pin shearing device. Background Art

[0002] Circuit boards miniaturize and visualize circuits, playing a vital role in the mass production of fixed circuits and optimizing the layout of electrical appliances. Circuit boards can be called printed circuit boards or PCBs. They include flexible and rigid circuit boards.

[0003] When electronic devices are inserted into existing circuit boards, the pins of the devices pass through the board, leaving a large number of pins of varying lengths on the back of the board. These pins need to be trimmed to a uniform length. Existing circuit board pin removal equipment on the market requires two blades to cut the pins. Given the positional relationship between these electric shears, the pins, and the jig, to avoid structural conflicts, longer blades or special-shaped blades are used. This complex structure leads to high production, operating, and maintenance costs, making it unsuitable for large-scale circuit board pin cutting.

[0004] Therefore, the utility model provides a circuit board pin cutting device, which can locate and fix the root position of the pin before and after cutting, and can cut multiple pins at the same time, avoiding the use of complex cutting structures such as blades. Utility Model Content

[0005] The purpose of the present invention is to provide a circuit board pin shearing device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a circuit board pin shearing device, comprising: a heat conducting plate, a bottom plate, a movable plate, a support column, a thermal expansion ring, a positioning block and a driving device, wherein the driving device drives the movable plate to slide along a horizontal straight line, the positioning block is arranged on the upper surface of the heat conducting plate, the heat conducting plate is arranged directly above the movable plate through the support column, the bottom plate is detachably arranged at the lower end of the heat conducting plate, a first through hole for the pin to pass through is provided on the upper surface of the heat conducting plate, and a second through hole is provided on the lower surface of the heat conducting plate to communicate with the first through hole. The bottom plate has a third through-hole for a pin to pass through, and the movable plate has a fourth through-hole for a pin to pass through. The first through-hole, the second groove, the third through-hole, and the fourth through-hole correspond to each other and are coaxially arranged. The thermal expansion rings are arranged in a one-to-one correspondence within the second groove. The outer diameter of the thermal expansion rings is equal to the diameter of the second groove. The thermal expansion rings have an interference fit with the first and third through-holes. The inner wall of the third through-hole has an upper shear protrusion on the end away from the heat conducting plate, and the inner wall of the fourth through-hole has a lower shear protrusion on the end close to the heat conducting plate. The movable plate's movement direction is perpendicular to the centerline of the first through-hole.

[0007] Preferably, a heating device is further included, and the heating device is connected to the heat conducting plate.

[0008] Preferably, the heat conducting plate includes a body and a cover plate, the cover plate is detachably arranged on the upper surface of the body, and the bottom plate is arranged on the lower surface of the body.

[0009] Preferably, the heat conducting plate, the bottom plate and the movable plate are all flat plates.

[0010] Preferably, the heat conducting plate, bottom plate and movable plate are all arc-shaped plates, and are coaxially arranged. A flexible circuit board that can be sheared and bent into an arc shape.

[0011] Preferably, the diameter of the third through hole gradually decreases in a direction away from the heat conducting plate, and the upper shear protrusion is formed at the edge of the lower end of the third through hole.

[0012] Preferably, the diameter of the fourth through hole gradually decreases as it approaches the heat conducting plate, and the edge of the upper end of the fourth through hole forms the lower shear protrusion. It is only necessary to machine a plurality of tapered holes on a metal plate whose shape matches that of the circuit board.

[0013] Preferably, the support column includes a threaded column and a sleeve, the sleeve includes a cylinder and a ring, the ring is integrally formed and arranged at the lower end of the outer circumferential surface of the cylinder, the cylinder is threadedly connected to the threaded column, and the heat conduction plate and the bottom plate are both provided with a through hole passing through the cylinder, and the through hole is interference fit with the ring.

[0014] Preferably, the driving device is a cylinder or a linear module.

[0015] Preferably, the four positioning blocks are respectively arranged at the end corners of the heat conducting plate, the cross section of the positioning block is L-shaped, and the upper end of the surface of the positioning block close to the center line of the heat conducting plate is chamfered.

[0016] The beneficial effects of the present invention are as follows: During the circuit board trimming process, the movable plate is initially positioned directly below the heat conducting plate, with the first through-hole and the fourth through-hole coaxial. The circuit board, equipped with electronic components, is then placed flat on the heat conducting plate. The positioning blocks surround the circuit board, limiting the position of the circuit board's corners. Each pin of the electronic component sequentially passes through the first through-hole, the second groove, the third through-hole, and the fourth through-hole. When the heat conducting plate is heated, the thermal expansion ring expands due to the heat, clamping and limiting the position of the base of the electronic component pins.

[0017] The movable plate is driven to move horizontally, perpendicular to the centerline of the pin. Because the inner walls of the third and fourth through-holes are tapered, they form sharp edges at one end. As the movable plate moves, the sharp edges of the third and fourth through-holes shear the pins. This clamping mechanism secures the pins at their bases and can cut multiple pins at once, eliminating the need for complex disassembly and assembly, significantly improving pin cutting efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings further illustrate the present invention, but the embodiments in the accompanying drawings do not constitute any limitation to the present invention.

[0019] Figure 1 A schematic structural diagram of a circuit board pin cutting device provided in one embodiment of the present utility model;

[0020] Figure 2 for Figure 1 A partial enlarged view of part A in the middle;

[0021] Figure 3 This is a structural schematic diagram of a movable plate provided in one embodiment of the utility model.

[0022] Figure numerals: 1: heat conducting plate; 2: bottom plate; 3: movable plate; 4: cover plate; 5: thermal expansion ring; 6: support column; 7: first through hole; 8: third through hole; 9: fourth through hole; 10: body. DETAILED DESCRIPTION

[0023] The following is a detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention and are not intended to limit the present invention.

[0024] It should be noted that in the present invention, unless otherwise stated, when an element is referred to as being "fixed to" or "set on" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The directional words used, such as "upper, lower, left, right" generally refer to the position of the element. Figure 1 "Inside and outside" refers to the inside and outside of the specific outline.

[0025] like Figure 1-Figure 3As shown in , a circuit board pin shearing device provided by one embodiment of the present invention includes: a heat conducting plate 1, a bottom plate 2, a movable plate 3, a support column 6, a thermal expansion ring 5, a positioning block and a driving device, wherein the driving device drives the movable plate 3 to slide along a horizontal straight line, the positioning block is arranged on the upper surface of the heat conducting plate 1, the heat conducting plate 1 is arranged directly above the movable plate 3 through the support column 6, the bottom plate 2 is detachably arranged at the lower end of the heat conducting plate 1, the upper surface of the heat conducting plate 1 is provided with a first through hole 7 for the pin to pass through, and the lower surface of the heat conducting plate 1 is provided with a second groove connected to the first through hole 7, The base plate 2 defines a third through-hole 8 for a pin to pass through, and the movable plate 3 defines a fourth through-hole 9 for a pin to pass through. The first through-hole 7, the second groove, the third through-hole 8, and the fourth through-hole 9 correspond to each other and are coaxially arranged. The thermal expansion rings 5 ​​are disposed within the second grooves in a one-to-one correspondence. The outer diameter of the thermal expansion rings 5 ​​is equal to the diameter of the second groove. The thermal expansion rings 5 ​​form an interference fit with the first and third through-holes 7 and 8. The inner wall of the third through-hole 8 has an upper shear projection on the end away from the heat conducting plate 1, and the inner wall of the fourth through-hole 9 has a lower shear projection on the end near the heat conducting plate 1. The movable plate 3 moves in a direction perpendicular to the centerline of the first through-hole 7.

[0026] It also includes a heating device, which is connected to the heat conducting plate 1 .

[0027] The heat conducting plate 1 includes a body 10 and a cover plate 4 . The cover plate 4 is detachably mounted on the upper surface of the body 10 , and the bottom plate 2 is mounted on the lower surface of the body 10 .

[0028] The heat conducting plate 1 , the bottom plate 2 and the movable plate 3 are all flat plates.

[0029] The heat conducting plate 1, the bottom plate 2 and the movable plate 3 are all arc-shaped plates, and the heat conducting plate 1, the bottom plate 2 and the movable plate 3 are coaxially arranged. A flexible circuit board that can be cut and bent into an arc shape.

[0030] The diameter of the third through hole 8 gradually decreases in the direction away from the heat conducting plate 1 , and the upper shear protrusion is formed at the edge of the lower end of the third through hole 8 .

[0031] The diameter of the fourth through hole 9 gradually decreases as it approaches the heat conducting plate 1, and the edge of the upper end of the fourth through hole 9 forms the lower shear protrusion. It is only necessary to machine a plurality of tapered holes on the metal plate with the same shape as the circuit board.

[0032] The support column 6 includes a threaded column and a sleeve, and the sleeve includes a cylinder and a ring. The ring is integrally formed and arranged at the lower end of the outer circumferential surface of the cylinder. The cylinder is threadedly connected to the threaded column. The heat conducting plate 1 and the bottom plate 2 are both provided with a through hole through which the cylinder passes, and the through hole is interference fit with the ring.

[0033] The driving device is a cylinder or a linear module.

[0034] The four positioning blocks are respectively arranged at the end corners of the heat conducting plate 1 . The cross section of the positioning block is L-shaped. The upper end of the surface of the positioning block close to the center line of the heat conducting plate 1 is chamfered.

[0035] The technical features of the above-described embodiments may be combined in any manner. To simplify the description, not all possible combinations of the technical features in the above-described embodiments are described. It should be noted that a person skilled in the art may make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements should be considered within the scope of this specification.

Claims

1. A circuit board pin cutting device, characterized by: include: The heat dissipation device is a heat dissipation device, and a heat dissipation device is installed in the heat dissipation device, and the heat dissipation device is installed in the heat dissipation device.

2. The circuit board pin cutting device according to claim 1, characterized in that: The utility model further comprises a heating device, wherein the heating device is connected to the heat conducting plate.

3. The circuit board pin cutting device according to claim 1, characterized in that: The heat conducting plate comprises a body and a cover plate, wherein the cover plate is detachably arranged on the upper surface of the body, and the bottom plate is arranged on the lower surface of the body.

4. The circuit board pin cutting device according to claim 1, characterized in that: The heat conducting plate, bottom plate and movable plate are all flat plates.

5. The circuit board pin cutting device according to claim 1, characterized in that: The heat conducting plate, the bottom plate and the movable plate are all arc-shaped plates, and the heat conducting plate, the bottom plate and the movable plate are coaxially arranged.

6. The circuit board pin cutting device according to claim 1, characterized in that: The diameter of the third through hole gradually decreases in a direction away from the heat conducting plate, and the upper shearing protrusion is formed at the edge of the lower end of the third through hole.

7. The circuit board pin cutting device according to claim 1, characterized in that: The diameter of the fourth through hole gradually decreases in the direction approaching the heat conducting plate, and the edge position of the upper end of the fourth through hole forms the lower shear protrusion.

8. The circuit board pin cutting device according to claim 1, characterized in that: The support column includes a threaded column and a sleeve, the sleeve includes a cylinder and a ring, the ring is integrally formed and arranged at the lower end of the outer circumferential surface of the cylinder, the cylinder is threadedly connected to the threaded column, and the heat conduction plate and the bottom plate are both provided with a through hole that passes through the cylinder, and the through hole is interference fit with the ring.

9. The circuit board pin cutting device according to claim 1, characterized in that: The driving device is a cylinder or a linear module.

10. The circuit board pin cutting device according to claim 1, characterized in that: The four positioning blocks are respectively arranged at the end corners of the heat conducting plate. The cross section of the positioning block is L-shaped. The upper end of the surface of the positioning block close to the center line of the heat conducting plate is chamfered.

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