Hollow cathode lamp and lamp holder alignment device

Abstract

The utility model provides a hollow cathode lamp and lamp holder aligning device which comprises a pneumatic three-jaw chuck and a concentric base used for clamping a lamp holder, the front end of the pneumatic three-jaw chuck is provided with three clamping jaws in an annular structure, the inner wall of each clamping jaw is provided with an arc-shaped structure attached to a lamp tube, the rear end of the pneumatic three-jaw chuck is connected with a speed reducer, and the speed reducer is connected with the concentric base. And the rear end of the speed reducer is connected with a servo motor. According to the utility model, the precision and efficiency in the bonding process of the cathode lamp are obviously improved, errors caused by manual operation are reduced, and the quality consistency of products is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automatic assembly, in particular to a hollow cathode lamp and lamp holder alignment device. BACKGROUND

[0002] Hollow cathode lamps are widely used in various lighting devices, especially in some occasions requiring high brightness and long service life such as laser, fluorescent lamp tube and other fields, hollow cathode lamps play a crucial role. With the progress of science and technology and the continuous improvement of production demand, the production process of hollow cathode lamps is gradually developing towards automation and high precision. However, in the production process of hollow cathode lamps, especially in the bonding operation of lamp tube and lamp holder, due to the high accuracy requirement of the alignment of lamp tube and lamp holder, the traditional manual operation method not only has low efficiency, but also has the problem of difficult to control the alignment accuracy, which greatly affects the production efficiency and product quality.

[0003] In the bonding process of hollow cathode lamp, the alignment problem between lamp holder and lamp tube has always been a key factor affecting the process quality. Because the size specifications of lamp holder and lamp tube are various, and the shape and surface smoothness of lamp tube itself have great changes, the traditional fixing device can not guarantee high precision alignment. Therefore, developing a device that can automatically align and accurately position has become a problem to be solved.

[0004] Although there are some devices for workpiece alignment on the market at present, most of them are simple mechanical structures, which cannot provide flexible adaptability between various specifications and shapes of lamp tubes, and the precision control and positioning method is relatively single. Especially in the automatic production line, how to quickly and accurately complete the alignment and bonding operation between hollow cathode lamp and lamp holder has become the bottleneck restricting the improvement of production efficiency and the stability of product quality.

[0005] In summary, how to provide an automatic alignment device with flexible adaptability under the premise of ensuring high precision has become a technical problem to be solved. CONTENT OF THE INVENTION

[0006] In order to overcome a series of defects existing in the prior art, the purpose of the present application is to provide a hollow cathode lamp and lamp holder alignment device, which comprises a pneumatic three-jaw chuck 6 and a concentric base for clamping the lamp holder, the front end of the pneumatic three-jaw chuck 6 is provided with three clamping jaws 7 in a ring structure, the inner wall of the clamping jaw 7 is provided with an arc structure matched with the lamp tube, the rear end of the pneumatic three-jaw chuck 6 is connected with a speed reducer 9, and the rear end of the speed reducer 9 is connected with a servo motor 10.

[0007] Further, a silica gel anti-skid soft pad 17 is arranged on the arc structure to increase the friction.

[0008] Further, the clamping jaw 7 is connected with the same pneumatic mechanism to realize the opening and closing of the clamping jaw 7.

[0009] Further, the size of the speed reducer is 120mm*80mm*100mm, and the transmission ratio is 1:30.

[0010] Further, the power of the servo motor is 150W, and the size is 120mm*60mm*50mm.

[0011] Further, the hollow cathode lamp and lamp holder alignment device further comprises a point laser sensor 11, when the small lamp holder 1 and the small lamp tube 2 are bonded, the point laser sensor 11 is arranged on one side of the small lamp tube 2 and is aligned with the axis of the small lamp tube 2, so as to judge the state and position of the conductive needle 8.

[0012] Compared with the prior art, the cathode lamp bonding process has the following beneficial effects:

[0013] The cathode lamp bonding process has the following beneficial effects: BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structure schematic view of the small lamp holder in the embodiment of the application;

[0015] Figure 2 It is a structure schematic view of the small lamp tube in the embodiment of the application;

[0016] Figure 3 It is a structure schematic view of the large lamp holder in the embodiment of the application;

[0017] Figure 4 It is a structure schematic view of the large lamp tube in the embodiment of the application;

[0018] Figure 5 It is a structure schematic view of a hollow cathode lamp and lamp holder alignment device in the embodiment of the application;

[0019] Figure 6 It is a schematic view when the small lamp holder and the small lamp tube are bonded in the embodiment of the application.

[0020] In the drawing:

[0021] 1-small lamp holder, 2-small lamp tube, 3-large lamp holder, 4-large lamp tube, 5-conductive needle sleeve, 6-pneumatic three-jaw chuck, 7-clamping jaw, 8-conductive needle, 9-speed reducer, 10-servo motor, 11-point laser sensor, 12-laser line, 13-detection range, 14-point laser, 15-leftmost position, 16-rightmost position; 17-silicone anti-skid soft pad. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the utility model clearer, the technical scheme in the utility model embodiment will be described in more detail in the following with reference to the drawings of the utility model embodiment. In the drawings, the same or similar notations represent the same or similar elements or elements with the same or similar functions throughout. The described embodiments are part of the embodiments of the utility model, not all.

[0023] Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0024] The embodiments described below and the directional words are exemplary and are intended to explain the utility model, and cannot be understood as limiting the utility model.

[0025] In a broad embodiment of the utility model, a hollow cathode lamp and lamp holder alignment device comprises a pneumatic three-jaw chuck 6 and a concentric base for clamping the lamp holder, the front end of the pneumatic three-jaw chuck 6 is provided with three clamping jaws 7 in an annular structure, the inner wall of the clamping jaw 7 is provided with an arc-shaped structure that fits the lamp tube, the rear end of the pneumatic three-jaw chuck 6 is connected with a speed reducer 9, and the rear end of the speed reducer 9 is connected with a servo motor 10.

[0026] Further, a silica gel anti-skid soft pad 17 is arranged on the arc-shaped structure to increase the friction.

[0027] Further, the clamping jaws 7 are connected with the same pneumatic mechanism to realize the opening and closing of the clamping jaws 7.

[0028] Further, the size of the speed reducer is 120mmx80mmx100mm, and the transmission ratio is 1:30.

[0029] Further, the power of the servo motor is 150W, and the size is 120mmx60mmx50mm.

[0030] Further, the hollow cathode lamp and lamp holder alignment device further comprises a point laser sensor 11, when the small lamp holder 1 and the small lamp tube 2 are bonded, the point laser sensor 11 is placed on one side of the small lamp tube 2 and aligned with the axis of the small lamp tube 2 to judge the state and position of the conductive needle 8.

[0031] The preferred embodiments of the utility model will be further described in combination with the drawings.

[0032] The bonding of the cathode lamp is mainly divided into two specifications, one is the small lamp holder 1 corresponding to the small lamp tube 2 as shown in Figure 1 and Figure 2 Another is as shown inFigure 3 and Figure 4 The large lamp holder 3 corresponds to the large lamp tube 4, and the two specifications mainly differ in the outer diameter. The cathode lamp tube is a glass product, and its appearance is not round. Manual alignment is prone to deviation and difficult to fix. For the bonding work of the small lamp holder 1 and the small lamp tube 2, the conductive pins below the small lamp tube 2 need to be inserted into the conductive pin sleeve 5 of the small lamp holder 1 under alignment.

[0033] A set of universal centering structures is designed for the small lamp tube 2 and the large lamp tube 4, as shown in Figure 5 A pneumatic three-jaw chuck 6 is used as the centering core component. The three-jaw chuck 7 is designed with three clamping jaws 7, and the inner wall of the clamping jaw 7 is circular to fit better. A silica gel anti-slip cushion 17 is matched on the arc surface of the inner wall of the clamping jaw 7 to increase the friction to prevent the cathode lamp from falling. Whether for the small lamp tube 2 or the large lamp tube 4, the thickest part is clamped, as shown in Figure 2 and Figure 4

[0034] The large lamp holder 3 cooperates with the large lamp tube 4. Only the large lamp tube 4 needs to be clamped by the device, and the large lamp holder 3 is fixed on the concentric base and clamped and pushed forward. The small lamp holder 1 needs to be aligned with the conductive pin sleeve 5 during the combination process of the small lamp holder 1 and the small lamp tube 2. First, the small lamp holder 1 is fixed and aligned with the center of the pneumatic three-jaw chuck 6. A speed reducer 9 is connected to the rear of the pneumatic three-jaw chuck 6, and a servo motor 10 is driven behind the speed reducer 9 to provide rotation of the cathode lamp.

[0035] As shown in Figure 5 and Figure 6 An additional point laser sensor 11 is adopted for the conductive pin 8 at the lower end of the small lamp tube 2. Because the overall alignment device can move up and down and can rotate, the state and position of the conductive pin 8 can be judged by using the feature in combination with the point laser sensor 11. The specific process is as follows: the point laser sensor 11 is placed on a layer of the small lamp tube 2 and aligned with the axis of the small lamp tube 2. The side view is shown in the figure. The laser line 12 is taken in from one side, and the laser detection area is set in the detection range 13. The point laser 14 is shown in the front view. When the laser detects the conductive pin 8, the position of the servo motor 10 at this time can be judged. The leftmost position 15 and the rightmost position 16 can be judged by the left and right rotation of the servo motor 10. The accurate position of the single pin can be judged by the two extreme positions. The presence or absence of the remaining three conductive pins 8 can be judged by rotating the servo motor 10 by 90°, so as to judge the presence or absence and position of all the conductive pins 8. The linearity of the single pin can also be judged by the overall lifting function to ensure the high uniformity of the quality of the product.

[0036] ​It should be pointed out finally that: the above examples are only used to illustrate the technical solutions of the utility model, and not limit it. Although the utility model has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement to part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A hollow cathode lamp and lamp holder alignment device, characterized in that, It includes a pneumatic three-jaw chuck (6) and a concentric base for holding the lamp holder. The front end of the pneumatic three-jaw chuck (6) is provided with three jaws (7) in a ring structure. The inner wall of the jaws (7) is provided with an arc-shaped structure that fits with the lamp tube. The rear end of the pneumatic three-jaw chuck (6) is connected to a reducer (9), and the rear end of the reducer (9) is connected to a servo motor (10).

2. The hollow cathode lamp and lamp holder alignment device according to claim 1, characterized in that, Furthermore, the arc-shaped structure is provided with a silicone anti-slip pad (17) to increase friction.

3. The hollow cathode lamp and lamp holder alignment device according to claim 1, characterized in that, The gripper (7) is connected to the same pneumatic mechanism.

4. The hollow cathode lamp and lamp holder alignment device according to claim 1, characterized in that, The reducer (9) has external dimensions of 120mm×80mm×100mm and a transmission ratio of 1:

30.

5. The hollow cathode lamp and lamp holder alignment device according to claim 1, characterized in that, The servo motor (10) has a power of 150W and a size of 120mm×60mm×50mm.

6. A hollow cathode lamp and lamp holder alignment device according to any one of claims 1-5, characterized in that, The hollow cathode lamp and lamp holder alignment device also includes a point laser sensor (11). When the small lamp holder (1) and the small lamp tube (2) are bonded together, the point laser sensor (11) is placed on one side of the small lamp tube (2) and aligned with the axis of the small lamp tube (2) to determine the state and position of the conductive needle (8).

7. The hollow cathode lamp and lamp holder alignment device according to claim 6, characterized in that, The point laser sensor (11) has external dimensions of 40mm×40mm×60mm and a measurement accuracy of 0.05mm.

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