Pin bending equipment for LED lamp beads

Abstract

The utility model relates to a pin bending device of an LED lamp bead. The bending device comprises two bending mechanisms distributed in a central symmetry mode, a three-axis servo assembly and a servo clamping hand assembly controlled by the three-axis servo assembly to move. The bending mechanism comprises a linear servo mechanism which is horizontally arranged, a sliding table which is arranged on the linear servo mechanism, a rotating device which is arranged on the sliding table, and a bending plate which is driven by the rotating device to horizontally rotate; the servo clamping hand assembly comprises two clamping pieces capable of clamping each other, clamping parts are arranged at the tail ends of the clamping pieces, the two clamping pieces can be controlled by the servo clamping hand assembly to be opened and closed, and the LED lamp beads are clamped from the feeding area. According to the utility model, the LED lamp bead is clamped and fixed through the servo clamping hand assembly, the bending of the pin is completed under the overturning action of the two bending plates, the bending stress generated in the bending process does not damage a lamp wick, and the servo clamping hand assembly is higher in motion precision and controllable in clamping force, so that the LED lamp bead is not easy to damage in the whole bending process, and the working efficiency is improved. And the production yield is relatively high.

Description

Technical Field

[0001] The utility model relates to LED lamp bead production equipment, in particular to a LED lamp bead pin bending equipment. Background Art

[0002] LED lamp beads, full name light-emitting diode lamp beads, are a kind of semiconductor components. Under the action of appropriate voltage and current, LED lamp beads can emit light, with the advantages of high efficiency, low energy consumption, long life, environmental protection and energy saving. The light-emitting principle of LED lamp beads is based on the electroluminescent effect of PN junction. When the LED lamp beads are connected through an external circuit and current is passed through, the positive electrode (anode) and the negative electrode (cathode) will inject electrons and holes into the PN junction. Near the PN junction, electrons and holes will recombine, release energy and convert into photons (the basic unit of light), thereby generating visible light. Compared with other light sources, LED lamp beads have the advantages of low power consumption, durability, green environmental protection, and eye protection.

[0003] LED lamp beads include a wick and pins on both sides thereof, especially for SMD lamp beads, whose wicks are generally flat and whose pins are also attached to the bottom of the wick. The pins of this type of lamp beads generally extend from the side wall of the wick and can only be attached to the bottom of the wick through a bending process. However, due to the small size of the wick and the relatively weak strength of the wick material compared to metal, the existing bending molds can easily cause damage to the wick, and the yield rate is not high. Therefore, it is necessary to redesign a device for bending the wick pins. Summary of the invention

[0004] The utility model provides a pin bending device for an LED lamp bead, which solves the problem in the prior art that the existing bending mold easily causes the wick to be damaged when bending the pin.

[0005] The above technical problems of the utility model are mainly solved by the following technical solutions: a pin bending device for LED lamp beads, characterized in that it includes two sets of bending mechanisms distributed symmetrically in the center, a three-axis servo assembly and a servo gripper assembly controlled by the three-axis servo assembly;

[0006] The bending mechanism includes a horizontally arranged linear servo mechanism, a slide arranged on the linear servo mechanism, a rotating device arranged on the slide, and a bending plate driven by the rotating device to rotate horizontally;

[0007] The servo gripper assembly includes two gripping plates that can grip each other, and the ends of the gripping plates are provided with gripping parts. The two gripping plates can be controlled to open and close by the servo gripper assembly, and grip the LED lamp beads from the loading area.

[0008] The three-axis servo assembly can drive the servo gripper assembly clamping the LED lamp bead to move to the symmetric center of the two bending mechanisms, and control the height of the LED lamp bead to be close to the height of the root of the pin and the height of the rotation center of the bending plate. The linear servo mechanism can push the slide to move to the side close to the LED lamp bead until the rotation center of the bending plate is close to the root of the pin, and then the two groups of bending mechanisms perform bending actions in succession. The specific bending action is that the initial state of the bending plate is horizontal, and its bottom surface is slightly higher than the upper surface of the pin. The rotating device drives the bending plate to rotate 180 degrees and then resets. The two groups of bending mechanisms act in succession to avoid physical interference with each other; the LED lamp bead suitable for the pin bending device includes a wick and pins on both sides thereof, and the two side walls of the wick with pins are set as pin mounting surfaces, and the remaining two side walls are set as clamping surfaces. The two clamping parts on the servo gripper assembly are clamped on the two clamping surfaces, and the width of the clamping part does not exceed the width of the clamping surface, so that the clamping part can avoid physical interference with the bending plate.

[0009] Furthermore, the clamping part is provided with a groove on the inner side wall, a movable clamping piece is installed in the groove, an elastic body that can be elastically deformed in the horizontal direction is connected between the movable clamping piece and the clamping part, and the lower part of the clamping part and located in the groove is set as a limiting part; the width of the movable clamping piece does not exceed the width of the clamping part. When the clamping part is in the state of clamping the LED lamp bead, the movable clamping piece will be pressed to move to one side of the clamping part, so that the limiting part will be relatively protruding and abut against the bottom of the LED lamp bead to produce a limiting effect.

[0010] Furthermore, a guide rod is fixed on the movable clamping plate and horizontally passes through the clamping part. A limiting cap is provided at the end of the guide rod. The elastic body can push the movable clamping plate to reset to its outside until the limiting cap abuts against the clamping part and makes the movable clamping plate flush with the limiting part in the vertical direction.

[0011] Therefore, compared with the prior art, the utility model has the following characteristics: 1. The utility model clamps and fixes the LED lamp bead through the servo clamping hand assembly, and completes the bending of the pin under the flipping action of the two bending plates. During the entire bending process, the bending plate does not contact the LED lamp bead. In addition, the pin itself is small in size, and the bending stress generated during the bending process will not cause damage to the wick. The servo clamping hand assembly has high movement accuracy and controllable clamping force. Therefore, the LED lamp bead is not easily damaged during the entire bending process, resulting in a higher production yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Attached Figure 1 It is a top view of two sets of bending mechanisms that are symmetrically distributed in the center, and the LED lamp beads are fixed in the bending position by the servo gripper assembly;

[0013] Attached Figure 2 It is a structural diagram of the three-axis servo assembly and the servo gripper assembly;

[0014] Attached Figure 3 This is a schematic diagram of the structure when the servo gripper assembly is opened;

[0015] Attached Figure 4 This is a schematic diagram of the structure of the servo gripper assembly when clamping;

[0016] Attached Figure 5 is a bending schematic diagram of the bending mechanism;

[0017] Attached Figure 6 It is a cross-sectional view of the bent plate. DETAILED DESCRIPTION

[0018] The technical solution of the utility model is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0019] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0020] Example 1: See Figure 1 and Figure 2 , a pin bending device for LED lamp beads, comprising two sets of bending mechanisms 100 distributed symmetrically in the center, a three-axis servo assembly 200 and a servo gripper assembly 300 whose movement is controlled by the three-axis servo assembly 200;

[0021] The bending mechanism includes a horizontally arranged linear servo mechanism 110, a slide 120 arranged on the linear servo mechanism, a rotating device 130 arranged on the slide, and a bending plate 140 driven by the rotating device to rotate horizontally, wherein the rotating device is a servo motor, and a side plate 150 is fixed to one end of the bending plate, and the side plate is fixedly connected to the output shaft of the rotating device;

[0022] See Figure 3 and Figure 4 The servo gripper assembly includes two gripping sheets 310 that can grip each other, and a gripping portion 320 is provided at the end of the gripping sheet. The two gripping sheets can be controlled to open and close by the servo gripper assembly, and grip the LED lamp beads from the loading area;

[0023] See Figure 5The three-axis servo assembly can drive the servo gripper assembly holding the LED lamp bead to move to the symmetric center of the two bending mechanisms, and control the height of the LED lamp bead to be close to the height of the root of the pin and the height of the rotation center of the bending plate. The linear servo mechanism can push the slide to move to the side close to the LED lamp bead until the rotation center of the bending plate is close to the root of the pin, and then the two sets of bending mechanisms perform bending actions in succession. The specific bending action is that the initial state of the bending plate is horizontal, and its bottom surface is slightly higher than the upper surface of the pin. The rotating device drives the bending plate to rotate 180 degrees and then resets. The two sets of bending mechanisms act in succession to avoid physical interference with each other; the LED lamp bead suitable for the pin bending equipment includes a wick and pins on both sides thereof. The two side walls of the wick with pins are set as pin mounting surfaces, and the remaining two side walls are set as clamping surfaces. The two clamping parts on the servo gripper assembly are clamped on the two clamping surfaces, and the width of the clamping part does not exceed the width of the clamping surface, so that the clamping part can avoid physical interference with the bending plate.

[0024] See Figure 3 and Figure 4 The clamping part has a groove 330 on the inner wall, and a movable clamping piece 340 is installed in the groove. An elastic body 350 that can be elastically deformed in the horizontal direction is connected between the movable clamping piece and the clamping part. The lower part of the clamping part and located at the groove is set as a limiter 360; the width of the movable clamping piece does not exceed the width of the clamping part. When the clamping part is in the state of clamping the LED lamp bead, the movable clamping piece will be pressed and move to one side of the clamping part, so that the limiter will be relatively protruding and press against the bottom of the LED lamp bead to produce a limiter effect.

[0025] See Figure 3 and Figure 4 A guide rod 370 is fixed on the movable clamping piece and runs horizontally through the clamping part. A limiting cap 371 is provided at the end of the guide rod. The elastic body can push the movable clamping piece to reset to its outside until the limiting cap abuts against the clamping part and makes the movable clamping piece and the limiting part flush in the vertical direction.

[0026] See Figure 2 The three-axis servo assembly includes a fixed seat 210, a rotating shaft 220 vertically rotating on the fixed seat, a sleeve 230 fixed to the upper end of the rotating shaft, a horizontal linear slide 240 fixed on the sleeve, a horizontal sliding seat 250, a vertical linear slide 260 fixed on the horizontal sliding seat and a vertical sliding seat 270. The servo gripper assembly is fixed on the vertical sliding seat, and the rotating shaft is driven to rotate by a motor.

[0027] See Figure 6 A guide cut corner 141 is provided on the bottom of the bending plate facing the LED lamp bead to avoid direct collision with the pin.

[0028] It is obvious to those skilled in the art that the utility model can be changed in many ways, and such changes are not considered to be out of the scope of the utility model. All such modifications obvious to those skilled in the art will be included in the scope of the claims.

Claims

1. A pin bending device for an LED lamp bead, the LED lamp bead comprising a wick and pins located on both sides thereof, characterized in that: It includes two sets of bending mechanisms distributed symmetrically in the center, a three-axis servo assembly and a servo gripper assembly whose movement is controlled by the three-axis servo assembly; The bending mechanism includes a horizontally arranged linear servo mechanism, a slide arranged on the linear servo mechanism, a rotating device arranged on the slide, and a bending plate driven by the rotating device to rotate horizontally; The servo gripper assembly comprises two clamping plates that can clamp each other, and the ends of the clamping plates are provided with clamping parts; The three-axis servo assembly can drive the servo gripper assembly holding the LED lamp bead to move to the symmetrical center of the two bending mechanisms.

2. The LED lamp bead pin bending device according to claim 1, characterized in that: The clamping portion is provided with a groove on the inner wall, a movable clamping plate is installed in the groove, an elastic body that can be elastically deformed in the horizontal direction is connected between the movable clamping plate and the clamping portion, and the lower part of the clamping portion and located on the groove is set as a limiting portion; the width of the movable clamping plate does not exceed the width of the clamping portion.

3. The LED lamp bead pin bending device according to claim 2, characterized in that: A guide rod is fixed on the movable clamping piece and horizontally passes through the clamping part. A limiting cap is provided at the end of the guide rod. The elastic body can push the movable clamping piece to reset to its outside until the limiting cap abuts against the clamping part and makes the movable clamping piece flush with the limiting part in the vertical direction.

4. The LED lamp bead pin bending device according to claim 1, characterized in that: The three-axis servo assembly includes a fixed seat, a rotating shaft vertically rotating on the fixed seat, a sleeve fixed to the upper end of the rotating shaft, a horizontal linear slide fixed on the sleeve, a horizontal sliding seat, a vertical linear slide fixed on the horizontal sliding seat and a vertical sliding seat, and the servo gripper assembly is fixed on the vertical sliding seat.

5. The LED lamp bead pin bending device according to claim 1, characterized in that: A guide cut angle is provided on the bottom side of the bending plate facing the LED lamp bead.

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