A clamping jig and a method of clipping a leg

Abstract

The application discloses a kind of embracing type pinning leg clamp, including two clamping plates, clamping plate has opposite upper surface and lower surface, two clamping plates are rotationally arranged to realize opening or closing action, each clamping plate is opened with the clamping groove extending from edge to inside on the side opposite to another clamping plate, when the clamping groove on two clamping plates closes, it forms the limiting hole body for the element upper pin to pass through and limit element upper pin;And planer, planer is slidably arranged on the lower surface of the clamping plate, for cutting off at least part of pin exposed from the lower surface of clamping plate of element upper surface.It also discloses a kind of pinning leg method, uses the embracing type pinning leg clamp described above.The embracing type pinning leg clamp uses the way of root clamping, cancels the necessary pin arrangement operation when element pinning leg, greatly improves production efficiency and the degree of convenience of operation;By replacing clamping plate of different thickness, it can be applied to different pinning leg working conditions, solve the demand of super short pinning leg size.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electronic component pin trimming, in particular to a clamping type pin trimming clamp and a pin trimming method. BACKGROUND

[0002] For electronic component pin trimming, initially, the pins of the components are straightened by hand, and then trimmed to the appropriate length using a beveled cutter or other trimming tool. Later, in order to improve operating efficiency and control pin consistency, the industry began to develop and introduce pin trimming jigs and pin trimming equipment.

[0003] There are currently two main methods: one is a jack type clamp, and the other is a guide rail type pin trimming.

[0004] The jack type pin trimming method uses a through hole type clamp. After the pins are manually shaped, the pins to be trimmed are inserted into the corresponding clamp hole, then the pins are fixed and length positioned by the clamp, and the pins are cut off by a cutter on the other side of the clamp to complete the pin trimming operation. This clamp and pin trimming method requires manual pin arrangement before the clamp is placed on the device, which is inefficient and difficult to automate.

[0005] The guide rail type pin trimming operation has a certain degree of automation, but it can only operate a small number of pins (e.g. 1-3 pins) of devices with simple pin arrangement (e.g. single column arrangement), and because the device needs to have a guide rail for transmission or positioning, the length of the trimmed pins cannot be too short, usually ≥1.6mm. For radio frequency electronic components, in order to reduce radio frequency loss, radio frequency radiation, and optimize resistance characteristics, the pins of these components are becoming shorter and shorter, even less than 0.5mm, and the commonly used guide rail type automatic pin trimming machine cannot meet the requirements. SUMMARY

[0006] The purpose of the present application is to provide a clamping type pin trimming clamp and a pin trimming method to improve production efficiency and operational convenience, and to solve the problem of limited pin trimming length.

[0007] The purpose of the present application is achieved by the following technical solutions:

[0008] The present application provides a clamping type pin trimming clamp, comprising two clamping plates, the clamping plates having opposite upper surfaces and lower surfaces, both clamping plates being rotationally arranged to achieve opening or closing actions, each clamping plate being provided with a clamping groove extending inward from the edge on the side facing the other clamping plate, when the clamping grooves on both clamping plates are closed, a limiting hole body for the pins of the component to pass through and limit the pins of the component is formed; and a planer knife, the planer knife being slidingly arranged on the lower surface of the clamping plate, for cutting off at least part of the pins of the component exposed from the lower surface of the clamping plate.

[0009] In an alternative, a rotating seat and a first driving member are further included, one end of each of the clamping plates is rotationally connected with the rotating seat, and the first driving member is used to drive the clamping plates to rotate around the center of the rotating seat.

[0010] In an alternative, the clamping plates are in a fan-shaped structure, the center of the clamping plates is provided with a rotating shaft part, the radial section of the rotating seat is in a ring-shaped structure, the radial section of the rotating shaft part is in a fan-shaped structure, the rotating shaft part is rotationally accommodated in the rotating seat and detachably connected with the rotating seat.

[0011] In an alternative, the included angle between the radial sections of the two rotating shaft parts in the rotating seat is not less than 120°.

[0012] In an alternative, the first driving member includes a gear, the arc surface of the clamping plate is provided with a tooth segment meshing with the gear, and the thickness dimension of the clamping plate is less than the thickness dimension of the gear.

[0013] In an alternative, the notch of the clamping groove is provided with an introduction chamfer on both sides.

[0014] In an alternative, the number of the clamping grooves is multiple, and the side of each of the clamping plates facing the other clamping plate is arranged in a comb-shaped structure.

[0015] In an alternative, the shape of the clamping groove is an arc shape same as the rotating direction of the clamping plate, or the clamping grooves of the two clamping plates are engaged to form a shape matching the outer peripheral surface of the pin.

[0016] In an alternative, a second driving member is further included, and the second driving member is used to drive the planer to reciprocatingly slide on the lower surface of the clamping plate.

[0017] The application further provides a pin cutting method using the above-mentioned embracing pin cutting clamp, which comprises the following steps:

[0018] Step S1: control the two clamping plates to be opened to make the pins on the element located between the two clamping plates;

[0019] Step S2: control the two clamping plates to be closed to make the pins on the element pass through the limiting hole body formed by the clamping grooves;

[0020] Step S3: control the planer to cut at least part of the pins on the element.

[0021] In an alternative, the step S2 comprises: controlling the two clamping plates to be closed to make the root of the pins on the element pass through the limiting hole body formed by the clamping grooves.

[0022] The step S3 comprises: controlling the planer to cut the pin from the root of the element pin.

[0023] Compared with the prior art, the beneficial effects of the present application at least include:

[0024] 1. The present clamp adopts root clamping mode, which cancels the necessary pin arrangement operation during element pin cutting, greatly improving production efficiency and operation convenience;

[0025] 2. By replacing the clamping plates of different thicknesses, it can be applied to different pin cutting conditions, solving the demand for ultra-short pin cutting size (cutting part less than 0.5mm);

[0026] 3. The design of the opening and closing action of the two clamping plates facilitates subsequent realization of automatic feeding and discharging control of the element. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a structure schematic view of the embracing type pin cutting clamp of the embodiment of the present application;

[0028] Figure 2 is a schematic view of the embracing type pin cutting clamp in the closed state of the embodiment of the present application;

[0029] Figure 3 is a schematic view of the embracing type pin cutting clamp in the open state of the embodiment of the present application;

[0030] Figure 4 is a structure schematic view of the clamping plate of the embodiment of the present application;

[0031] In the figure: 1. clamping plate, 11. clamping groove, 12. pivot part, 13. lead-in chamfer, 14. tooth segment, 2. planer, 3. limiting hole body, 4. rotating seat, 5. first driving member, 6. element. DETAILED DESCRIPTION

[0032] Example embodiments now will be described more fully hereinafter with reference to the accompanying drawings; however, these embodiments are not the only ones that can be implemented by the present application, and thus the present application can be carried out in a multitude of ways. Rather, these embodiments are presented by way of example only, and should not be used to limit the scope of the present application. Furthermore, the illustrative embodiments described hereinbelow can be used in a variety of contexts. Description of examples is intended to be accurate and complete, and will fully enable those skilled in the art to make and use the application. In the drawings, like reference numerals refer to like elements throughout.

[0033] The words expressing position and direction described in the present application are described by taking the drawings as an example, but changes can also be made as needed, and the changes made are included in the protection scope of the present application.

[0034] Referring to Figure 1 the present application discloses an embracing type pin cutting clamp, which comprises two clamping plates 1 and a planer 2.

[0035] Wherein: the clamping plate 1 has opposite upper and lower surfaces, Figure 2 The schematic view of the inverted clamp, the upper surface of the clamping plate 1 is used to carry the element 6, and the lower surface is matched with the planer cutter 2 to cut off the required pins, by controlling the distance between the upper surface and the lower surface, the required pin length can be obtained, that is, for the requirement of different length of the pin, only the clamping plate 1 with different thickness needs to be selected.

[0036] Both clamping plates 1 are rotationally arranged to realize the opening or closing action, and the side of each clamping plate 1 facing the other clamping plate 1 is provided with a clamping groove 11 extending inward from the edge (as shown in Figures 3-4 The position, number and shape of the clamping groove 11 are not limited, and adaptive adjustment is made according to the arrangement of the pins on the element 6 to be processed, when the clamping grooves 11 on the two clamping plates 1 are closed, the limiting hole body 3 for the pins on the element 6 to pass through and limit the pins on the element 6 is formed, by using the characteristic that the pins on the element 6 are not easy to be dislocated and distorted at the root, the clamping plate 1 adopts the rotary clamping mode to clamp the root of the pin, instead of the through hole type clamp inserted from the end of the pin, which can make the pin not easy to be deformed, so that the operation of arranging the pins can be directly cancelled, and the production efficiency and operation convenience can be greatly improved.

[0037] The planer cutter 2 is slidingly arranged on the lower surface of the clamping plate 1, and has an inclined blade portion at the front end to improve the cutting quality, the blade portion is made of hard metal such as high speed steel, chromium vanadium steel, etc., and is used to cut off at least part of the pins on the element 6 exposed from the lower surface of the clamping plate 1. Because the pins on the element 6 are cut off from the root, the remaining pins on the element 6 are not easy to be dislocated and distorted, thereby the pin cutting quality can be effectively improved. It should be noted that under the premise that the groove width of the clamping groove 11 is matched with the pin, during the operation of the planer cutter 2, if the clamping groove 11 is closed to form a shape completely matched with the outer periphery of the pin, then all the degrees of freedom of the pin are limited, and the planer cutter 2 can cut in from any direction; if the shape formed after the clamping groove 11 is closed has a moving area with the pin, it means that the pin actually lacks the limitation of the freedom degree in the direction of the slot opening of the clamping groove 11, at this time, the planer cutter 2 is preferably cut in perpendicular to the direction of the slot opening of the clamping groove 11.

[0038] The clamping type pin cutting clamp of the present application is used as shown in Figure 3 First, the two clamping plates 1 are controlled to be opened, the pins on the element 6 to be processed are conveyed between the two clamping plates 1, and then Figure 2As shown, the two clamping plates 1 are controlled to close, the pins on the element 6 pass through the limiting hole body 3 formed by the clamping groove 11, the freedom of the pins is limited by the two ends of the limiting hole body 3, finally the planer cutter 2 is driven to slide close to the lower surface of the clamping plate 1 to cut off the excess pins and complete the pin cutting operation. In addition, a collection box (not shown in the figure) can be arranged below the above-mentioned embracing type pin cutting clamp for collecting the pin scrap cut off to reduce pollution and production cost.

[0039] Referring to Figure 1 、 Figure 4 As shown, in some embodiments, the embracing type pin cutting clamp further comprises a rotating seat 4 and a first driving member 5, one end of each clamping plate 1 is rotationally connected with the rotating seat 4, and the first driving member 5 is used to drive the clamping plate 1 to rotate around the center of the rotating seat 4.

[0040] Preferably, the clamping plate 1 is in a fan-shaped structure, a rotating shaft part 12 is arranged at the center of the clamping plate 1, the radial section of the rotating seat 4 is in a ring-shaped structure, the radial section of the rotating shaft part 12 is in a fan-shaped structure, the rotating shaft part 12 is rotatably contained in the rotating seat 4 and detachably connected with the rotating seat 4.

[0041] The rotating seat 4 in a ring-shaped structure and the rotating shaft part 12 in a fan-shaped structure are matched in the embodiment, which can well rotationally connect the two clamping plates 1 together to realize the opening or closing action and has the advantage of simple assembly structure. In addition, the above-mentioned structure also enables the rotating seat 4 and the rotating shaft part 12 to have the detachable capability, thereby facilitating the disassembly or assembly of the clamping plate 1 and being applicable to different pin cutting conditions.

[0042] As for the shape of the clamping plate 1, it is designed as a fan-shaped structure here for the convenience of processing and in combination with its own rotating track; the first driving member 5 driving the clamping plate 1 to act is not specially limited, it only needs to be able to drive the clamping plate 1 to rotate around the center of the rotating seat 4, for example, as shown in Figure 2 The first driving member 5 of the embodiment is preferably a gear, the arc surface of the clamping plate 1 is provided with a tooth segment 14 meshing with the gear, the clockwise and counterclockwise rotation of the gear is controlled, the clamping plate 1 is driven to rotate around the center of the rotating seat 4 through the transmission of the tooth segment 14, and has the characteristics of high accuracy and good stability in the steering control. Considering that different clamping plates 1 need to be matched in different cutting conditions, when the clamping plate 1 is assembled or disassembled, since the first driving member 5 is not changed, only the clamping plate 1 is changed, therefore in terms of size, it is a better choice that the thickness size of the gear is greater than the thickness size of the clamping plate 1, since the gear has sufficient thickness, therefore any position of the clamping plate 1 in the thickness direction of the gear can realize meshing, which facilitates the assembly of the clamping plate 1, and the gear with larger thickness has better structural strength, which can meet the driving requirements of the clamping plate 1 with thinner or thicker thickness and has the advantage of good universality.

[0043] Still referring to Figure 1The included angle between the radial sections of the two rotating shaft portions 12 in the rotating seat 4 is not less than 120°.

[0044] Since the clamp adopts the clamping manner, the opening size of the two clamping plates 1 determines whether the pins on the component 6 can smoothly enter between the two clamping plates 1. Therefore, the greater the opening angle of the two clamping plates 1, the smoother the entering of the pins on the component 6 into the position. Or, the two clamping plates 1 are opened at a small angle, but the length of the clamping plate 1 is relatively long, and the pins on the component 6 can also smoothly enter into the position. Considering the volume of the clamp, the included angle between the radial sections of the two rotating shaft portions 12 in the embodiment is not less than 120°. This angle range is sufficient to ensure that the pins on the component 6 enter between the clamping plates 1 without being affected, and the volume of the clamp is relatively small, which does not occupy space.

[0045] Referring to FIG. 1, Figures 1-4 As shown in FIG. 1, in some embodiments, the number of clamping grooves 11 is multiple, and the side of each clamping plate 1 facing the other clamping plate 1 is arranged in a comb tooth structure. The shape of the clamping groove 11 is an arc shape same as the rotating direction of the clamping plate 1, or the clamping grooves 11 of the two clamping plates 1 are combined to form a shape matching the outer periphery of the pin.

[0046] For the pin cutting requirement of multiple pins, taking the component 6 with five-angle distributed pins as an example, a pair of clamping grooves 11 on the clamping plate 1 are combined to form a shape matching the outer periphery of the pin, and two pairs of clamping grooves 11 on the clamping plate 1 are combined to form an arc shape same as the rotating direction of the clamping plate 1. Three limiting hole bodies 3 formed by the three pairs of clamping grooves 11 can well clamp and limit the pins. It should be noted that the clamping grooves 11 on the clamping plate 1 can be adjusted adaptively according to the number and position of the pins of different components 6. The shape of the clamping groove 11 can be an arc shape same as the rotating direction of the clamping plate 1, a strip shape with slightly larger groove width, or a V shape, which can all satisfy the clamping and limiting of the pins.

[0047] In order to make the pins enter the limiting hole body 3 more conveniently, the two sides of the slot of the above-mentioned clamping groove 11 are provided with an entering chamfer 13 to increase the slot width of the clamping groove 11 and avoid damage to the pins on the component 6 caused by sharp right angles.

[0048] In some embodiments, the clamping type pin cutting clamp further comprises a second driving member for driving the planer knife 2 to reciprocally slide on the lower surface of the clamping plate 1.

[0049] The second driving member can replace manual driving of the planer knife 2 to slide, thereby improving the degree of automation and work efficiency. The second driving member is not limited, for example, a cylinder, a push rod, a lead screw module, etc. are used for driving, and the specific selection is based on the installation layout of the clamp.

[0050] The application also provides a pin shearing method using the above-mentioned pin shearing clamp, comprising steps S1-S3.

[0051] Step S1: control the two clamping plates 1 to open, so that the pins on the component 6 are located between the two clamping plates 1.

[0052] Step S2: control the two clamping plates 1 to close, so that the pins on the component 6 pass through the limiting hole body 3 formed by the clamping groove 11.

[0053] Step S3: control the planer 2 to cut at least part of the pins on the component 6.

[0054] The pin shearing method described above realizes the limitation of the pins in a clamping groove 11 manner, instead of using a jack plug type pin shearing, which can avoid the operation step of manually shaping the pins from the root, and greatly improves the production efficiency and operation convenience. In addition, the planer 2 cooperates with the clamping plate 1 of a specific thickness, which can meet the demand of super-short pin shearing size (the cut part is less than 0.5mm).

[0055] Preferably, step S2 comprises: controlling the two clamping plates 1 to close, so that the roots of the pins on the component 6 pass through the limiting hole body 3 formed by the clamping groove 11; and step S3 comprises: controlling the planer 2 to cut the pins on the component 6 from the roots of the pins.

[0056] In the above-mentioned pin shearing method, by taking advantage of the feature that the pins on the component 6 will not be misaligned and distorted at the roots, the pins are directly clamped and limited at the roots and cut from the roots, which can solve the problem of pin deformation and improve the pin shearing quality.

[0057] Although the embodiments of the application have been shown and described above, it should be understood that the above-mentioned embodiments are exemplary and should not be construed as limiting the application. Those skilled in the art can make changes, modifications, replacements and variations to the above-mentioned embodiments without departing from the principles and purposes of the application within the scope of the application. All these changes should be within the protection scope of the claims of the application.

Claims

1. A clamping scissor clamp, characterized in that, The device comprises: two clamping plates, each having opposite upper and lower surfaces, and each being rotatably arranged to perform an opening or closing action, each of the clamping plates having a clamping groove extending inwardly from an edge on a side thereof facing the other clamping plate, and when the clamping grooves of the two clamping plates are closed, a limiting hole body is formed for allowing the pins on the component to pass through and limiting the pins on the component, and at least part of the clamping groove is arc-shaped in the same direction as the rotation direction of the clamping plate; a planer knife, which is slidably arranged on the lower surface of the clamping plate, and is used to cut at least part of the pins on the component exposed from the lower surface of the clamping plate; the clamping plate has a fan-shaped structure, and a rotating shaft part is arranged at the center of the clamping plate, the rotating shaft part is rotatably connected with the rotating seat, the radial section of the rotating seat is in a ring shape, the radial section of the rotating shaft part is in a fan shape, the rotating shaft part is rotatably accommodated in the rotating seat, and the rotating shaft part is detachably connected with the rotating seat, so as to replace the clamping plate with different thicknesses. The device further comprises a first driving member, which is used to drive the clamping plate to rotate around the center of the rotating seat.

2. The self-clinching clinch foot assembly of claim 1, wherein, The included angle between the radial sections of the two rotating shaft parts in the rotating seat is not less than 120°.

3. The self-clinching clinch foot assembly of claim 1, wherein, The first driving member comprises a gear, and the arc surface of the clamping plate is provided with a tooth segment meshing with the gear, and the thickness of the clamping plate is smaller than the thickness of the gear.

4. The self-clinching clinch foot assembly of claim 2, wherein, The number of the clamping grooves is multiple, and the clamping grooves are arranged in a comb tooth structure on the side of each clamping plate facing the other clamping plate.

5. The self-clinching clinch foot assembly of claim 1, wherein, At least part of the clamping grooves of the two clamping plates are combined to form a shape matching the outer periphery of the pin.

6. The self-clinching clinch foot assembly of claim 1, wherein, The two sides of the slot of the clamping groove are provided with lead-in chamfers.

7. The self-clinching clinch foot assembly of claim 6, wherein, The device further comprises a second driving member, which is used to drive the planer knife to reciprocally slide on the lower surface of the clamping plate.

8. The self-clinching clinch foot assembly of claim 1, wherein, The device is used in the method comprising:

9. A method of trimming a leg, characterized by, step S1: controlling the two clamping plates to be opened, so that the pins on the component are located between the two clamping plates; step S2: controlling the two clamping plates to be closed, so that the pins on the component pass through the limiting hole body formed by the clamping grooves; step S3: controlling the planer knife to cut at least part of the pins on the component. The step S2 comprises: controlling the two clamping plates to be closed, so that the roots of the pins on the component pass through the limiting hole body formed by the clamping grooves.

10. The clip leg method of claim 9, wherein, The step S3 comprises: controlling the planer knife to cut the pins on the component from the roots of the pins. ​

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