Automatic calibration equipment for IRM product laser welding clamp

Abstract

The utility model relates to the technical field of calibration equipment, in particular to automatic calibration equipment for an IRM product laser welding clamp. The device comprises a workbench, a bottom plate, a clamping device and a limiting device, the workbench is fixed through clamps on the two sides. The workbench is divided into a left working area and a right working area. A group of clamping devices and limiting devices are arranged in each working area; the bottom plate is a hard thin plate, is fixed above the workbench through a clamping device and is used for forming a clamp for fixing the IRM product; applying pressure to the IRM product from top to bottom by using a limiting device to fix the IRM product on the bottom plate; a positioning point for positioning is reserved on the clamping device; and the laser welding equipment carries out positioning calibration through the positioning points. According to the utility model, the PCB can be conveniently clamped, errors are reduced through a multi-point positioning mode, the product precision is improved, and the packaging quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of calibration equipment, in particular to an automatic calibration device for an IRM product laser welding fixture. Background Art

[0002] IRM is an infrared receiving module, which has a photosensitive PD chip inside and a processing and amplifying IC chip in series. It can receive 940nm infrared light, and process, rectify, decode and amplify the signal using infrared light as the carrier, and convert the optical signal into an electrical parameter model. Because the processing and amplifying IC chip will also be interfered by other light in the external natural light, the packaging colloid is made of black epoxy glue. The black colorant component can filter out visible light and part of the infrared light, at most infrared light below 860nm. However, since the transmission rate of filtered red light is about 80%, the high-wavelength spectrum in sunlight, or the high-wavelength spectrum in energy-saving lamps and incandescent lamps can still enter the IRM module, interfere with the IC chip, and affect the IRM's decoding, amplification, and electrical signal processing capabilities. There is a clutter phenomenon, or the remote control receiving distance is greatly reduced.

[0003] Currently, the main IRMs produced on the market are divided into two major categories: plug-in and surface mount. Common surface mount PCB packaging requires the use of laser welding equipment. Due to the small size of microelectronic products, calibration is an essential step. The size of the error directly affects the quality of the product packaging. Utility Model Content

[0004] The utility model aims to solve the problems existing in the background technology and proposes an automatic calibration device for laser welding fixtures of IRM products.

[0005] The technical solution of the utility model is an automatic calibration device for laser welding fixtures of IRM products, comprising a workbench, a base plate, a clamping device and a limiting device;

[0006] The workbench is fixed by clamps on both sides; the workbench is divided into two working areas on the left and right; each working area is equipped with a set of clamping devices and limit devices;

[0007] The base plate is a hard thin plate, which is fixed on the top of the workbench by a clamping device to form a fixture for fixing the IRM product. The limit device is used to apply pressure from top to bottom to fix the IRM product on the base plate.

[0008] Positioning points are reserved on the clamping device for positioning; the laser welding equipment is positioned and calibrated through the positioning points.

[0009] Preferably, when the base plate is fixed on the workbench by the clamping device, the base plate does not contact the workbench and remains suspended.

[0010] Preferably, the workbench has a mounting groove reserved below the bottom plate, and an ejection device is provided in the mounting groove for ejecting the IRM product from the fixture.

[0011] Preferably, the ejection device includes an ejection mechanism and a control module;

[0012] The ejection mechanism includes a base and a spherical airbag vertically arranged on the base; the control module is fixed on the workbench and located on one side of the base plate; the control module is connected to the spherical airbag through an air pipe; the control module has a built-in air pump, which controls the spherical airbag to be pushed up or retracted by inflating and deflating air.

[0013] Preferably, the opening in the middle of the bottom plate is used to reserve space for the ejection device to operate.

[0014] Preferably, a positioning groove is reserved at the edge of the bottom plate opening for placing the IRM product; the IRM product remains in a protruding state when placed on the bottom plate through the positioning groove.

[0015] Preferably, each set of clamping devices is provided with at least two positioners for clamping the product from at least two directions;

[0016] The positioner includes a clamping plate and a hydraulic assembly; the hydraulic assembly includes a cylinder, a pipeline and an output shaft; the cylinder supplies oil to the output shaft through the pipeline to control the extension or retraction of the output shaft; a vertical contact plate is installed at the end of the output shaft, and the contact plate is used to abut against the protruding part of the IRM product.

[0017] Preferably, the clamping plate is used for clamping with the base plate.

[0018] Preferably, a positioning point is provided on the upper surface of the portion where the output shaft abuts the contact plate.

[0019] Preferably, the limiting device includes a handle, a limiting block and a movable arm;

[0020] The limit device is fixed to the base plate through the bottom support and bolts; the handle rotates around the third axis; the handle and the limit block are connected by the second axis and maintain relative rotation; the movable arm is rotatably connected to the support through the first axis, and a torsion spring is provided on the first axis; hold the handle and rotate it counterclockwise, it rotates around the third axis, and pushes the limit block to move toward the movable arm; the movable arm is provided with a "V"-shaped clamping arm, and the limit block squeezes the clamping arm so that the movable arm and the limit block are locked, at this time the end of the movable arm abuts against the IRM product, and the torsion spring stores elastic potential energy.

[0021] Compared with the prior art, the present invention has the following beneficial technical effects:

[0022] The utility model is provided with multiple clamping devices to clamp the bottom plate, and at the same time, positioning grooves are reserved to facilitate the positioning and fixing of the PCB board; after the PCB board is installed, the product is clamped in at least two directions on the horizontal plane, and at the same time, the product is clamped in the Z-axis direction in conjunction with the limit device; then, positioning calibration is performed through at least three positioning points to reduce the overall error; after the welding process is completed, the product can also be ejected using the matching ejection device to facilitate the removal of the PCB board. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0024] Figure 2 This is a partial enlarged structural diagram of an embodiment of the utility model;

[0025] Figure 3 This is a schematic structural diagram of a clamping device according to an embodiment of the present utility model;

[0026] Figure 4 This is a schematic structural diagram of a limiting device according to an embodiment of the present utility model.

[0027] Figure numerals: 1. workbench; 2. base plate; 3. clamping device; 4. limiting device; 5. ejection device; 21. opening; 22. positioning groove; 31. positioner; 32. clamping plate; 33. output shaft; 34. contact plate; 35. positioning point; 36. oil cylinder; 37. pipeline; 41. handle; 42. movable arm; 43. limiting block; 44. support; 45. second rotating shaft; 46. first rotating shaft; 47. third rotating shaft; 51. ejection mechanism; 52. control module. DETAILED DESCRIPTION Example

[0028] like Figure 1 As shown, the utility model proposes an automatic calibration device for an IRM product laser welding fixture, comprising a workbench 1, a base plate 2, a clamping device 3 and a limiting device 4;

[0029] The workbench 1 is fixed by clamps on both sides; the workbench 1 is divided into two working areas on the left and right; each working area is provided with a set of clamping devices 3 and limiting devices 4;

[0030] Base plate 2 is a hard, thin plate secured to the top of workbench 1 via clamping device 3, forming a fixture for securing the IRM product. Limiting device 4 applies pressure from top to bottom to secure the IRM product to base plate 2. When base plate 2 is secured to workbench 1 via clamping device 3, base plate 2 does not contact workbench 1 and remains suspended. An opening 21 in the center of base plate 2 reserves space for ejection device 5. Workbench 1 has a mounting slot below base plate 2, within which is located ejection device 5 for ejecting the IRM product from the fixture. Ejection device 5 includes an ejection mechanism 51 and a control module 52.

[0031] The ejection mechanism 51 includes a base and a spherical airbag vertically arranged on the base; the control module 52 is fixed on the workbench 1 and is located on one side of the base plate 2; the control module 52 is connected to the spherical airbag through an air tube; the control module 52 has a built-in air pump, which controls the spherical airbag to be pushed up or retracted by inflating and deflating air.

[0032] In this embodiment, a positioning groove 22 is reserved at the edge of the opening 21 of the bottom plate 2 for placing the IRM product; the IRM product is placed on the bottom plate 2 through the positioning groove 22 and remains in a protruding state; each set of clamping devices 3 is provided with at least two positioners 31 for clamping the product from at least two directions;

[0033] The positioner 31 includes a clamping plate 32 and a hydraulic assembly; the hydraulic assembly includes a cylinder 36, a pipeline 37 and an output shaft 33; the cylinder 36 supplies oil to the output shaft 33 through the pipeline 37 to control the extension or retraction of the output shaft 33; a vertical contact plate 34 is installed at the end of the output shaft 33, and the contact plate 34 is used to abut against the protruding part of the IRM product.

[0034] In this embodiment, the PCB is first placed as a whole in the positioning groove 22 reserved in the base plate 2, and then the output shaft 33 is driven to extend by the hydraulic assembly so that the contact plate 34 can abut against the protruding part of the PCB, thereby fixing the PCB from both the upper and lower directions. In addition, in this embodiment, the limiting device 4 includes a handle 41, a limiting block 43 and a movable arm 42; the limiting device 4 is fixed to the base plate 2 by a support 44 at the bottom and a bolt; the handle 41 rotates around the third rotation axis 47; the handle 41 and the limiting block 43 are connected. The two are connected by a second rotating shaft 45 and maintain relative rotation; the movable arm 42 is rotatably connected to the support 44 via the first rotating shaft 46, and a torsion spring is provided on the first rotating shaft 46; holding the handle 41 and rotating it counterclockwise, it rotates around the third rotating shaft 47 and pushes the limit block 43 to move toward the movable arm 42; the movable arm 42 is provided with a "V"-shaped clamping arm, and the limit block 43 squeezes the clamping arm so that the movable arm 42 and the limit block 43 are locked together. At this time, the end of the movable arm 42 contacts the IRM product, and the torsion spring stores elastic potential energy. Figure 1As shown, positioning points 35 are set on the upper surfaces of the abutment parts of the output shafts 33 and the contact plates 34 of the three sets of clamping devices. Due to the multiple positioning points 35, the laser welding equipment can quickly achieve three-point positioning through the positioning points 35; thereby, positioning and calibration are performed according to the actual position of the PCB board in the positioning groove 22, thereby reducing errors and improving the accuracy of the overall product.

[0035] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. An automatic calibration device for laser welding fixtures of IRM products, characterized in that: It comprises a workbench (1), a base plate (2), a clamping device (3) and a limiting device (4); The workbench (1) is fixed by clamps on both sides; the workbench (1) is divided into two working areas on the left and right; each working area is provided with a set of clamping devices (3) and limiting devices (4); The base plate (2) is a hard thin plate, which is fixed on the top of the workbench (1) by a clamping device (3) to form a fixture for fixing the IRM product; a limiting device (4) is used to apply pressure from top to bottom on the IRM product to fix it on the base plate (2); A positioning point (35) is reserved on the clamping device (3) for positioning; the laser welding equipment is positioned and calibrated via the positioning point (35).

2. The automatic calibration device for laser welding fixtures for IRM products according to claim 1, characterized in that: When the base plate (2) is fixed on the workbench (1) through the clamping device (3), the base plate (2) does not contact the workbench (1), and the base plate remains in a suspended state.

3. The automatic calibration device for laser welding fixtures for IRM products according to claim 2, characterized in that: The workbench (1) has a mounting groove reserved at a position below the base plate (2), and an ejection device (5) is provided in the mounting groove for ejecting the IRM product from the fixture.

4. The automatic calibration device for laser welding fixtures for IRM products according to claim 3, characterized in that: The ejection device (5) includes an ejection mechanism (51) and a control module (52); The ejection mechanism (51) includes a base and a spherical airbag vertically arranged on the base; the control module (52) is fixed on the workbench (1) and located on one side of the bottom plate (2); the control module (52) is connected to the spherical airbag via an air tube; the control module (52) has a built-in air pump, which controls the spherical airbag to be ejected or retracted by inflating and deflating air.

5. The automatic calibration device for laser welding fixtures for IRM products according to claim 4, characterized in that: The opening (21) in the middle of the bottom plate (2) is used to reserve space for the ejection device (5) to move.

6. The automatic calibration device for laser welding fixtures for IRM products according to claim 1, characterized in that: A positioning groove (22) is reserved at the edge of the opening (21) of the bottom plate (2) for placing the IRM product; the IRM product remains in a protruding state when placed on the bottom plate (2) through the positioning groove (22).

7. The automatic calibration device for laser welding fixtures for IRM products according to claim 6, characterized in that: Each set of clamping devices (3) is provided with at least two positioners (31) for clamping the product from at least two directions; The positioner (31) includes a clamping plate (32) and a hydraulic assembly; the hydraulic assembly includes an oil cylinder (36), a pipeline (37) and an output shaft (33); the oil cylinder (36) supplies oil to the output shaft (33) through the pipeline (37) to control the output shaft (33) to extend or retract; a vertical contact plate (34) is installed at the end of the output shaft (33), and the contact plate (34) is used to abut against the protruding part of the IRM product.

8. The automatic calibration device for laser welding fixtures for IRM products according to claim 7, characterized in that: The clamping plate (32) is used for clamping with the bottom plate (2).

9. The automatic calibration device for laser welding fixtures of IRM products according to claim 7, characterized in that: A positioning point (35) is provided on the upper surface of the portion where the output shaft (33) and the contact plate (34) abut against each other.

10. The automatic calibration device for laser welding fixtures of IRM products according to claim 1, characterized in that: The limiting device (4) includes a handle (41), a limiting block (43) and a movable arm (42); The limiting device (4) is fixed to the bottom plate (2) via a bottom support (44) and bolts; the handle (41) rotates around the third rotation axis (47); the handle (41) and the limiting block (43) are connected via a second rotation axis (45) and maintain relative rotation; The movable arm (42) is rotatably connected to the support (44) via a first rotating shaft (46), and a torsion spring is provided on the first rotating shaft (46); Holding the handle (41) and rotating it counterclockwise, it rotates around the third rotating shaft (47) and pushes the limit block (43) to move toward the movable arm (42); the movable arm (42) is provided with a "V"-shaped clamping arm, and the limit block (43) squeezes the clamping arm so that the movable arm (42) and the limit block (43) are locked together. At this time, the end of the movable arm (42) contacts the IRM product, and the torsion spring stores elastic potential energy.

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