A copper clad laminate laser thickness measuring device

Abstract

The utility model provides a copper clad laminate laser thickness measuring device, comprising a frame, a conveyor belt is rotatably arranged on the frame; a bracket, the bracket is arranged at one end of the frame, and two groups of laser detection components are installed on the bracket, the two groups of laser detection components are arranged above and below the conveying surface of the conveyor belt, and the laser detection components are provided with an adjustment mechanism, and the adjustment mechanism is used to drive the laser detection components to move horizontally to change the coverage range of its detection points. The utility model adopts a non-contact laser thickness measurement method, which does not affect the appearance of the product, and the continuous measurement efficiency is higher, and it can perform multi-point measurement on the copper clad laminate to improve the detection accuracy.

Description

Technical Field

[0001] The utility model relates to the technical field of detection, in particular to a copper clad plate laser thickness measuring device. Background Art

[0002] Copper clad laminate is the basic material of the electronics industry. It is made of wood pulp paper or glass fiber cloth as a reinforcing material, impregnated with resin, covered with copper foil on one or both sides, and hot pressed. Copper clad laminate is mainly used for processing and manufacturing printed circuit boards (PCBs), and is now widely used in electronic products such as computers, computers, mobile communications, and televisions. PCB copper clad laminates need to be measured for thickness before production to ensure that they are uniform in thickness and stable in performance. Too thick or too thin copper clad laminates will directly affect the characteristic impedance of PCB copper clad laminates.

[0003] At present, most of the domestic copper clad laminate production uses contact thickness measurement methods, some of which are online measurements and some are offline sampling. However, the contact measurement method usually requires workers to perform one-to-one measurements with a handheld micrometer. This method has certain disadvantages, such as: the efficiency of manual measurement is low, the micrometer will leave caliper marks on the surface of the copper clad laminate, affecting the appearance of the product, there is a certain risk of missing a certain proportion of defective products in sampling inspections, and generally only a single point thickness measurement of the copper clad laminate is performed, resulting in insufficient accuracy.

[0004] In order to solve the above technical problems, the utility model proposes a copper clad laminate laser thickness measurement technology, which adopts a non-contact laser thickness measurement method, can not affect the product appearance, and has higher efficiency of continuous measurement, can perform multi-point measurement on the copper clad laminate, and improve the detection accuracy. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a copper clad laminate laser thickness measuring device, which can perform continuous and multi-point measurement without affecting the product appearance during measurement, thereby improving detection efficiency and accuracy.

[0006] According to an embodiment of the utility model, a copper clad laminate laser thickness measuring device comprises: a frame, on which a conveyor belt is rotatably provided; a bracket, which is arranged at one end of the frame and on which two groups of laser detection components are installed, the two groups of laser detection components are arranged above and below the conveying surface of the conveyor belt, respectively, and the laser detection components are provided with an adjustment mechanism, the adjustment mechanism is used to drive the laser detection components to move horizontally to change the coverage range of its detection points;

[0007] The technical principle of the utility model is as follows: the copper-clad laminate is sent to the laser detection component via a conveyor belt for traceless thickness detection. During the transportation process, the driving part in the positioning mechanism is started, driving the vertical plates on both sides to move synchronously towards each other, approaching the copper-clad laminate on the conveyor belt and contacting its side edges, until the copper-clad laminate is pushed to the center position area of ​​the conveyor belt, corresponding to the coverage range of the laser detection component, so that it can evenly disperse the detection of multiple points on the copper-clad laminate, thereby improving accuracy. Driven by the conveyor belt, multiple copper-clad laminates to be detected pass through the laser detection component in turn, realizing efficient continuous detection.

[0008] Preferably, the driving member includes a threaded rod and a roller rotatably connected to the frame, there are two threaded rods and they are respectively arranged on opposite sides of the frame, each threaded rod is threadedly connected with a slider, the slider is fixedly connected to the vertical plate on the same side, and each vertical plate is provided with a sliding limit mechanism; the roller is fixedly provided with a support rod at both opposite ends, the support rod is fixedly provided with a wire wheel, the wire wheel is connected with a steel wire, the other end of the steel wire is connected to the threaded rod on the same side, and the threaded rod is fixedly provided with a torsion spring at the end away from the steel wire.

[0009] Preferably, it also includes a positioning mechanism, which is arranged on one end of the frame away from the laser detection assembly. The positioning mechanism includes two vertical plates and a driving member that are slidably arranged along a direction perpendicular to the moving direction of the conveyor belt. The two vertical plates are respectively located on opposite sides of the conveyor belt and are both connected to the driving member. The driving member is used to drive the two vertical plates to move toward or away from each other synchronously.

[0010] Preferably, the sliding limiting mechanisms include sliding rods fixedly mounted on opposite sides of the frame, the sliding rods are slidably connected to the vertical plates on the same sides, and elastic members are sleeved on the outside of the sliding rods, and the two ends of the elastic members are respectively in contact with the frame and the vertical plates.

[0011] Preferably, each group of laser detection components includes three laser sensors arranged at intervals in the transverse direction, the laser sensor located at the center is fixedly connected to the bracket, and the remaining laser sensors are slidably connected to the bracket through an adjustment mechanism.

[0012] Preferably, the adjustment mechanisms include a driving motor fixedly mounted on the bracket, and a driving shaft rotatably connected to the bracket. The driving shafts have two parts and are respectively arranged on opposite sides of the driving motor. A linkage mechanism is provided at the output end of the driving motor to drive the two driving shafts to rotate synchronously in opposite directions. A driving gear is fixedly provided on each driving shaft. Racks are slidably provided on the inner wall of the bracket at opposite ends. The driving gears on the same side are meshed with the racks. The two racks are fixedly connected to the laser sensors located at both ends.

[0013] Preferably, the bracket is connected to the frame through a frame plate, the frame plate is an inverted "U"-shaped structure, and the bracket is fixedly arranged at the inner bottom thereof; fixing threaded holes are opened on opposite sides of the frame plate, and a plurality of adjustment threaded holes are opened on corresponding sides of the frame in the vertical direction, and the fixing threaded holes and the adjustment threaded holes are connected by fixing bolts.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. It is beneficial to use laser detection components to detect the thickness of copper clad laminates, which will not affect the appearance of the product. In addition, multiple detection points are evenly distributed, which can improve the thickness detection accuracy of copper clad laminates and further increase the rate of high-quality products leaving the factory;

[0016] 2. By setting up a conveyor belt to drive multiple copper-clad laminates to move, continuous and efficient thickness detection can be achieved, thereby improving detection efficiency;

[0017] 3. By setting a positioning mechanism to adjust the placement of the copper clad laminate, the detection coverage of the laser detection component can be adapted to the actual width of the copper clad laminate, so that multiple detection points are evenly distributed on the copper clad laminate, thereby improving the detection accuracy of the product;

[0018] 4. By setting an adjustment mechanism to adjust the lateral position of the laser detection component, the distribution of multiple laser detection points can be changed according to the actual needs of the manufacturer, making the detection method more flexible. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the top view structure of the utility model;

[0020] Figure 2 It is a rear structural schematic diagram of the frame plate and the bracket of the utility model.

[0021] In the above drawings: 1 frame; 2 conveyor belt; 3 bracket; 4 vertical plate; 5 threaded rod; 6 roller; 7 support rod; 8 wire wheel; 9 steel wire; 10 slide bar; 11 laser sensor; 12 drive motor; 13 drive shaft; 14 drive gear; 15 rack; 16 frame plate. DETAILED DESCRIPTION

[0022] The technical solution of the present utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0023] like Figure 1As shown, an embodiment of the utility model proposes a copper clad laminate laser thickness measuring device, comprising: a frame 1, on which a conveyor belt 2 is rotatably provided; a bracket 3, which is arranged at one end of the frame 1, and on which two groups of laser detection components are installed, the two groups of laser detection components are respectively arranged above and below the conveying surface of the conveyor belt 2, and the laser detection components are provided with an adjustment mechanism, the adjustment mechanism is used to drive the laser detection components to move horizontally to change the coverage range of its detection points; a positioning mechanism, which is arranged at one end of the frame 1 away from the laser detection component, the positioning mechanism includes two vertical plates 4 and a driving member that are slidably arranged along a direction perpendicular to the moving direction of the conveyor belt 2, the two vertical plates 4 are respectively located on opposite sides of the conveyor belt 2 and are both connected to the driving member, and the driving member is used to drive the two vertical plates 4 to move toward or away from each other synchronously.

[0024] In this embodiment, the vertical plates 4 on both sides only play a pushing role on the copper clad laminate, so that the copper clad laminate can be moved to the central area of ​​the conveyor belt 2, which is basically consistent with the detection point coverage range of the laser detection component, and will not be tightly abutted against the side wall of the copper clad laminate under the action of the driving member, thereby hindering the continuous transportation of the copper clad laminate; in addition, a group of laser detection components of this device located below the conveyor belt 2 is not shown. In actual assembly, the upper and lower groups of laser detection components are both close to the copper clad laminate on the conveyor belt 2 through the bracket 3.

[0025] like Figure 1 , Figure 2 As shown, according to another embodiment of the utility model, a copper clad laminate laser thickness measuring device, wherein the driving member includes a threaded rod 5 and a roller 6 rotatably connected to a frame 1, the threaded rod 5 has two pieces and is respectively arranged on opposite sides of the frame 1, each threaded rod 5 is threadedly connected with a slider, the slider is fixedly connected to a vertical plate 4 located on the same side, and each vertical plate 4 is provided with a sliding limit mechanism; the roller 6 is fixedly provided with a support rod 7 at both opposite ends, the support rod 7 is fixedly provided with a wire wheel 8, the wire wheel 8 is connected with a steel wire 9, the other end of the steel wire 9 is connected to the threaded rod 5 located on the same side, and the threaded rod 5 is fixedly provided with a torsion spring (not shown in the figure) at the end away from the steel wire 9.

[0026] In this embodiment, for the convenience of actual installation, a connecting rod can be set between the threaded rod 5 and the support rod 7 on both sides, the steel wire 9 is wound between the wire wheel 8 and the connecting rod, and a synchronous drive mechanism is provided between the connecting rod and the threaded rod 5. The synchronous drive mechanism can directly use existing technologies, such as mutually meshing gears; in addition, the rotation range of the roller 6, the movement range of the vertical plate 4, etc. can be adjusted according to the actual detected width of the copper clad laminate, so that the two vertical plates 4 can push the copper clad laminate to the center position of the conveyor belt 2.

[0027] Furthermore, the manufacturer can set a separate power drive for the roller 6, such as installing an intermittent motor so that its starting frequency matches the moving speed of multiple copper clad laminates, or the friction between the roller 6 and the copper clad laminate can be appropriately increased, such as setting the roller 6 to have a rough surface, raised particles, etc., so that the copper clad laminate can drive the roller 6 to rotate.

[0028] like Figure 1 , Figure 2 As shown, according to another embodiment of the utility model, a copper clad laminate laser thickness measuring device, wherein the sliding limit mechanism includes a slide bar 10 fixedly mounted on opposite sides of a frame 1, the slide bar 10 is slidably connected to a vertical plate 4 located on the same side, and an elastic member is sleeved on the outside of the slide bar 10, and both ends of the elastic member are respectively abutted against the frame 1 and the vertical plate 4.

[0029] In this embodiment, the slide bar 10 can limit the vertical plate 4 to reciprocate in the horizontal direction, and the elastic member plays a buffering role.

[0030] like Figure 1 , Figure 2 As shown, according to another embodiment of the utility model, a copper clad laminate laser thickness measuring device is provided, wherein each group of laser detection components includes three laser sensors 11 arranged at intervals along the lateral direction, the laser sensor 11 located at the center is fixedly connected to the bracket 3, and the remaining laser sensors 11 are slidably connected to the bracket 3 through an adjustment mechanism.

[0031] In this embodiment, the position of the laser sensor 11 located at the center is fixed, and the thickness of the center line of the copper clad laminate is always detected, while the positions of the laser sensors 11 on both sides are adjustable, so that the position distribution of the detection points can be changed according to the actual needs of the manufacturer, thereby improving the flexibility and practicality of the device. Therefore, in order to avoid the laser emitted by the laser sensor 11 on the lower side of the conveyor belt 2 being blocked by the conveyor belt 2, the conveyor belt 2 used is composed of a plurality of small conveyor belts with smaller widths and arranged in parallel, and a certain gap is left between each small conveyor belt. When adjusting the position, the laser sensors 11 on both sides of the laser detection component located on the lower side of the conveyor belt 2 should be adjusted to be directly below the gap so that the laser emitted by them can pass through the gap and irradiate the lower side of the copper clad laminate.

[0032] like Figure 1 , Figure 2As shown, according to another embodiment of the utility model, a copper clad laminate laser thickness measuring device, wherein the adjusting mechanism includes a driving motor 12 fixedly mounted on a bracket 3, and a driving shaft 13 rotatably connected to the bracket 3, the driving shaft 13 has two pieces and is respectively arranged on opposite sides of a driving motor 9, and a linkage mechanism is provided at the output end of the driving motor 9 to drive the two driving shafts 13 to rotate synchronously in opposite directions, and a driving gear 14 is fixedly provided on each driving shaft 13, and racks 15 are slidably provided on the inner wall of the bracket 3 at opposite ends, and the driving gear 14 located on the same side is in transmission meshing engagement with the rack 15, and the two racks 15 are fixedly connected to the laser sensors 11 located at both ends.

[0033] In this embodiment, the linkage mechanism can directly adopt conventional technology, such as transmission chain and gear structure; in addition, the rack 15 can be connected to the bracket 3 by means of a slide groove and a "T"-shaped slider.

[0034] like Figure 1 , Figure 2 As shown, according to another embodiment of the utility model, a copper clad laminate laser thickness measuring device, wherein the bracket 3 is connected to the frame 1 through a frame plate 16, the frame plate 16 is an inverted "U"-shaped structure, and the bracket 3 is fixedly arranged at the inner bottom thereof; fixed threaded holes are opened on opposite sides of the frame plate 16, and a plurality of adjustment threaded holes are opened on corresponding sides of the frame 1 along the vertical direction, and the fixed threaded holes and the adjustment threaded holes are connected by fixing bolts.

[0035] In this embodiment, by connecting the fixed threaded holes with the adjusting threaded holes at different heights through fixing bolts, the height of the entire bracket 3 and the frame plate 16 can be changed, so that the device can be used for testing copper clad laminates of various thicknesses.

[0036] The implementation principle of the embodiment of the present application is as follows: a worker puts a plurality of copper-clad laminates on the conveyor belt 2 in sequence, so that the copper-clad laminates partially cover the outer surface of the roller 6. When the conveyor belt 2 rotates and drives the plurality of copper-clad laminates to move in the direction of the laser sensor 11 in sequence, the copper-clad laminates maintain contact with the roller 6, which can then drive the roller 6 to rotate. While the roller 6 rotates, it drives the support rods 7 and the wire wheel 8 on both sides to rotate. The wire wheel 8 rotates to wind up the steel wire 9, thereby driving the threaded rod 5 to rotate. While the threaded rod 5 rotates, the vertical plates 4 on both sides slide toward each other synchronously under the action of the slider and the slide rod 10, approach the two side surfaces of the copper-clad laminate and push it to the central area of ​​the conveyor belt 2, corresponding to the detection point distribution range of the laser sensor 11, and can evenly detect multiple positions on the copper-clad laminate to achieve high-precision thickness detection.

[0037] When a copper-clad laminate moves away from the roller 6, the roller 6 loses the power source that drives it to rotate, and the threaded rod 5 rotates in the opposite direction under the reset action of the torsion spring, thereby driving the vertical plates 4 to move away from each other. At the same time, the steel wire 9 is wound back onto the threaded rod 5 until the conveyor belt 2 drives the next copper-clad laminate to contact the roller 6 again. This reciprocating process can move the copper-clad laminate to be tested to the center position of the conveyor belt 2 in turn, thereby achieving high-precision thickness detection.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A copper clad laminate laser thickness measuring device, characterized in that: include: A frame, on which a conveyor belt is rotatably provided; The bracket is arranged at one end of the frame, and two groups of laser detection components are installed on the bracket. The two groups of laser detection components are respectively arranged above and below the conveying surface of the conveyor belt, and the laser detection components are provided with an adjustment mechanism, which is used to drive the laser detection components to move horizontally to change the coverage range of its detection points.

2. The copper clad laminate laser thickness measuring device according to claim 1, characterized in that: It also includes a positioning mechanism, which is arranged on one end of the frame away from the laser detection component. The positioning mechanism includes two vertical plates and a driving member that are slidably arranged along a direction perpendicular to the moving direction of the conveyor belt. The two vertical plates are respectively located on opposite sides of the conveyor belt and are both connected to the driving member. The driving member is used to drive the two vertical plates to move toward or away from each other synchronously.

3. The copper clad laminate laser thickness measuring device according to claim 2, characterized in that: The driving member includes a threaded rod and a roller rotatably connected to the frame, the threaded rod has two pieces and is respectively arranged on opposite sides of the frame, each threaded rod is threadedly connected with a slider, the slider is fixedly connected to the vertical plate on the same side, and each vertical plate is provided with a sliding limit mechanism; the roller is fixedly provided with a support rod at both opposite ends, the support rod is fixedly provided with a wire wheel, the wire wheel is connected with a steel wire, the other end of the steel wire is connected to the threaded rod on the same side, and the threaded rod is fixedly provided with a torsion spring at the end away from the steel wire.

4. The copper clad laminate laser thickness measuring device according to claim 3, characterized in that: The sliding limit mechanism comprises sliding rods fixedly mounted on opposite sides of the frame, the sliding rods being slidably connected to the vertical plates on the same side, and elastic members are sleeved on the outside of the sliding rods (10), the two ends of the elastic members respectively abutting against the frame and the vertical plates.

5. The copper clad laminate laser thickness measuring device according to claim 1, characterized in that: Each group of the laser detection components includes three laser sensors arranged at intervals in the transverse direction. The laser sensor located at the center is fixedly connected to the bracket, and the remaining laser sensors are slidably connected to the bracket through an adjustment mechanism.

6. A copper clad laminate laser thickness measuring device according to claim 5, characterized in that: The adjustment mechanisms include a driving motor fixedly mounted on a bracket, and a driving shaft rotatably connected to the bracket. The driving shafts have two parts and are respectively arranged on opposite sides of the driving motor. A linkage mechanism is provided at the output end of the driving motor to drive the two driving shafts to rotate synchronously in opposite directions. A driving gear is fixedly provided on each driving shaft. Racks are slidably provided on the inner wall of the bracket at opposite ends. The driving gears on the same side are meshed with the racks, and the two racks are fixedly connected to the laser sensors located at both ends.

7. The copper clad laminate laser thickness measuring device according to claim 1, characterized in that: The bracket is connected to the frame through a frame plate, the frame plate is an inverted "U"-shaped structure, and the bracket is fixedly arranged at the inner bottom thereof; There are fixing threaded holes on both sides, and the frame has a plurality of adjusting threaded holes on the corresponding two sides along the vertical direction. The fixing threaded hole and the adjusting threaded hole are connected by a fixing bolt.

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