An adjustable PCB board carrier

Abstract

The present invention relates to an adjustable PCB board carrier, comprising: a worm crank width adjustment mechanism, which is installed on a material receiving plate and connected to an adjustment direction switching mechanism, and is used to drive a helical bevel gear, a worm, a worm wheel and a crank structure through a rocker to adjust the position of a clamped fixed column rod in the length and width directions of the PCB board respectively; an adjustment direction switching mechanism, which is installed on the back of the material receiving plate, and realizes the switching of the adjustment direction through a pair of helical bevel gears on the main gear shaft and a toggle sliding mechanism, thereby realizing the drive adjustment of the corresponding helical bevel gear, worm wheel and crank structure in the worm crank width adjustment mechanism respectively. The present invention can carry PCB boards of different sizes, and can freely adjust the size of the carrier by sliding in an inclined groove, rotating bearings, and using a gear meshing structure, a worm wheel structure and a crank structure.

Description

Technical Field

[0001] The invention relates to a PCB board tooling and loading device, in particular to an adjustable PCB board loading device. Background Art

[0002] With the development of industrial automation, many factories have entered the stage of automated production, and the PCB industry is no exception. In a normal PCB automated production line, tooling is usually used to carry PCBs and transport them between various devices. At present, the carriers used in the industry are generally specially customized according to the shape of the product or carriers that need to be manually adjusted separately. A slot of the corresponding shape is designed in the tooling to fix the PCB board.

[0003] For different products, the size of PCB boards is usually different. Therefore, a set of fixtures specially customized for a certain product is usually difficult to apply to other products. When there are many different products in the production line, it is necessary to equip a variety of fixtures. This will not only increase the complexity of the production line, but also increase the difficulty of disassembly and replacement, thereby reducing production efficiency and increasing capital and time costs to a certain extent. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides an adjustable PCB board carrier, which can adjust the size of the clamp according to the size of the PCB board. The overall structure is simple, easy to use, and can improve the adjustment efficiency.

[0005] To achieve the above object, the technical solution of the present invention is: an adjustable PCB board carrier, comprising:

[0006] The worm crank width adjustment mechanism is installed on the material receiving plate and connected to the adjustment direction switching mechanism, and is used to drive the helical bevel gear, worm, worm wheel and crank structure through the rocker to adjust the position of the clamping fixed column rod in the length and width directions of the PCB board respectively;

[0007] The adjustment direction switching mechanism is installed on the back of the material receiving plate. Through a pair of helical bevel gears on the main gear shaft and a toggle sliding mechanism, the adjustment direction is switched, thereby realizing the separate drive adjustment of the corresponding helical bevel gears, worm wheels and crank structures in the worm crank width adjustment mechanism.

[0008] Furthermore, the worm crank width adjustment mechanism has two pairs of worm and worm gear mechanisms and crank structures, wherein the worm wheels in the two pairs of worm and worm gear mechanisms are coaxially rotatably connected to the material receiving plate through a central shaft, the two worm wheels are respectively connected to their own worms, and the two worms are respectively connected to a helical bevel gear; the two worm wheels are respectively connected to their own crank structures, wherein one crank structure is respectively hinged to a slider that can move along the length direction of the PCB board through two symmetrically hinged long cranks, and the other crank structure is respectively hinged to a slider that can move along the width direction of the PCB board through two symmetrically hinged short cranks, the slider is placed in a guide slot opened on the material receiving plate, and a fixed column rod is fixedly connected to the slider.

[0009] Furthermore, the worm is mounted on the material receiving plate through a bearing seat and a bearing and is rotatable.

[0010] Furthermore, the crank is connected to the slider through a crank slider screw in combination with a bearing, and the end of the crank slider screw fixes the fixed column rod to the slider through a thread.

[0011] Furthermore, a pair of helical bevel gears in the adjustment direction switching mechanism are coaxially installed on the main gear shaft, and the main gear shaft is connected to a toggle sliding mechanism, which drives the main gear shaft and the two helical bevel gears thereon to slide, thereby realizing separate connection with the two helical bevel gears in different adjustment directions.

[0012] Furthermore, one end of the main gear shaft in the toggle sliding mechanism is connected to the guide column bearing seat through a bearing, the guide column bearing seat is fixed in its axial position by the stepped protrusion on the main gear shaft and the bearing limit sleeve, and is linked with the main gear shaft, the guide column on the guide column bearing seat can slide in the oblique guide groove of the oblique guide groove plate, the manual push piece and the oblique guide groove plate are connected by bolts, the oblique guide groove plate is in contact with the oblique guide groove plate slide plate, and the oblique guide groove plate can slide on the guide groove plate slide plate; the other end of the main gear shaft is in contact with the bearing seat sliding bracket through the sliding bearing seat, and the sliding bearing seat can slide in the bearing seat sliding bracket.

[0013] Furthermore, a conical rocker is wedged into the main gear shaft to form a tight connection.

[0014] Furthermore, the main gear shaft is circumferentially fixedly connected to the two helical bevel gears by means of set screws.

[0015] Furthermore, guide grooves are respectively provided on both sides of the receiving plate along the length direction and along the width direction.

[0016] The beneficial effects of the present invention are:

[0017] The present invention adopts a rocker and gear meshing, a worm gear, and a crank structure, and the size of the clamp can be adjusted according to the size of the PCB board. The gear is driven by the rocker, and then the worm gear and crank structure are driven to achieve the adjustment of the size of the clamp. In addition, the front and rear ends and the left and right ends of the clamp can be adjusted separately. The overall structure is simple and easy to use. The present invention can carry PCB boards of different sizes, and the size of the carrier can be freely adjusted by sliding in the inclined groove and rotating the bearing with the help of the gear meshing structure, the worm gear structure and the crank structure. In production lines with products of different sizes, there is no need to deliberately customize the carrier, which effectively reduces the cost. In addition, the adjustment of the length and width of the carrier is independent and has strong adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the top structure and working state of the adjustable PCB board carrier of the present invention;

[0019] Figure 2 It is a schematic diagram of the bottom structure of the adjustable PCB board carrier invented;

[0020] Figure 3 is a schematic diagram of the transmission mechanism;

[0021] In the figure: spindle 1, left and right side width adjustment worm gear 2, first and second long cranks 031, 032, first and second sliders 051, 052, front and rear side width adjustment worm gear 7, first and second short cranks 081, 082, short crank slider screws 9, first and second worms 101, 102, main gear shaft 11, guide column bearing seat 14, oblique guide groove plate 16, long crank slider screws 17, fixed column rod 18, receiving plate 19, bearing limit sleeve 20, first to fourth helical bevel gears 211, 212, 213, 214, oblique guide groove plate fixing plate 22, manual push piece 25, bearing seat sliding support frame 26, tapered rocker 27, PCB board 28. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0023] like Figures 1 to 3 As shown, an adjustable PCB board carrier of the present invention includes an adjustment direction switching mechanism and a worm crank width adjustment mechanism.

[0024] The adjustment direction switching mechanism is formed by wedging the conical rocker 27 into the main gear shaft 11 to form a tight connection. The main gear shaft 11 is connected to the guide column bearing seat 14 through a bearing and can rotate relative to each other. The guide column bearing seat 14 is fixed in its axial position by the stepped protrusion on the main gear shaft 11 and the bearing limit sleeve 20 to be linked with the main gear shaft 11. The guide column on the guide column bearing seat 14 can slide in the oblique guide groove of the oblique guide groove plate 16. The manual push piece 25 and the oblique guide groove plate 16 are connected by bolts. The oblique guide groove plate 16 contacts the oblique guide groove plate slide plate 22, and the oblique guide groove plate 16 can slide on the guide groove plate slide plate 22. The main gear shaft 11 is connected to the second and third helical bevel gears 212 and 213 and is circumferentially fixed by set screws. The second helical bevel gear 212 can contact the first helical bevel gear 211, and the third helical bevel gear 213 can contact the fourth helical bevel gear 214. The main gear shaft 11 is connected to the sliding bearing seat 24 through a bearing and can rotate relative to each other. The sliding bearing seat 24 is in contact with the bearing seat sliding bracket 26, and the sliding bearing seat 24 can slide in the bearing seat sliding bracket 26.

[0025] The first and second worms 101 and 102 in the worm crank width adjustment mechanism are fixed on the material receiving plate 19 through the bearing seat and the bearing and can rotate. The first worm 101 contacts the front and rear width adjustment worm wheels 7 for transmission, and the second worm 102 contacts the left and right width adjustment worm wheels 2 for transmission. The left and right width adjustment worm wheels 2 and the front and rear width adjustment worm wheels 7 are all connected to the material receiving plate 19 through the spindle 1 and can rotate. The first long crank 031 is connected to the first slider 051 through the long crank slider screw 17 combined with the bearing. At the same time, the end of the long crank slider screw 17 has a thread that can fix the fixed column 18 on the first slider 051 and move with the first slider 051. The second long crank 032 is connected in the same way as the first long crank 031. The second short crank 082 is connected to the second slider 052 through the short crank slider screw 9 in combination with the bearing. At the same time, the end of the long crank slider screw 9 has a thread that can fix the fixed column rod 18 on the second slider 052 and move together with the second slider 052. The first short crank 081 is connected in the same way as the second short crank 082.

[0026] Guide grooves are respectively provided on both sides of the receiving plate 19 along the length direction and along the width direction. The first slider 051 is slidably connected in the guide groove in the length direction, and the second slider 052 is slidably connected in the guide groove in the width direction.

[0027] The working principle of the present invention is as follows:

[0028] Before the adjustable PCB board carrier of the present invention is adjusted, the manual push piece 25 is pushed to the limit position, and the inclined guide groove plate 16 is as shown in FIG. Figure 1 The guide column bearing seat 14 moves vertically downward along the inclined guide groove. Figure 1 The third bevel gear 213 moves rightward in the horizontal direction, thereby driving the third bevel gear 213 to move rightward and mesh with the fourth bevel gear 214 through the main gear shaft 11. At this time, the conical rocker 27 is toggled to rotate the main gear shaft 11 and the third bevel gear 213, and the fourth bevel gear 214 meshes and rotates, and the second worm 102 rotates accordingly, driving the left and right width adjustment worm gears 2 to rotate, and the first and second long cranks 031 and 032 connected to the left and right width adjustment worm gears 2 move symmetrically, and at the same time push the two corresponding first sliders 051 to move. Figure 3 As shown in the figure, the material receiving plate 19 is limited and can only move in a straight line, thereby achieving the purpose of adjusting the distance between the two fixed pillars 18 in the length direction. The manual push piece 25 is pulled to the limit position, at which time the inclined guide groove plate 16 is as shown in the figure. Figure 1 The guide column bearing seat 14 moves vertically upward along the inclined guide groove. Figure 1 The horizontal direction moves leftward, thereby linking the second helical bevel gear 212 to move rightward through the main gear shaft 11 and meshing with the first helical bevel gear 211. The width adjustment principle after meshing is the same as above, and finally the purpose of adjusting the distance between the two fixed poles 18 in the width direction is achieved.

Claims

1. An adjustable PCB board carrier, characterized in that: include: The worm crank width adjustment mechanism is installed on the material receiving plate and connected with the adjustment direction switching mechanism, and is used for driving the helical bevel gear, the worm, the worm wheel and the crank structure through the rocker to adjust the position of the clamped fixed column rod in the length and width directions of the PCB board respectively; the worm crank width adjustment mechanism comprises two pairs of worm and worm wheel mechanisms and crank structures, the worm wheels in the two pairs of worm and worm wheel mechanisms are connected to the material receiving plate through coaxial rotation of the spindle, the two worm wheels are respectively connected to their own worms, and the two worms are respectively connected to a helical bevel gear; the two worm wheels are respectively connected to their own crank structures, wherein one crank structure is respectively hinged to a slider movable along the length direction of the PCB board through two symmetrically hinged long cranks, and the other crank structure is respectively hinged to a slider movable along the width direction of the PCB board through two symmetrically hinged short cranks, the slider is placed in a guide slot provided on the material receiving plate, and the slider is fixedly connected to the fixed column rod; An adjustment direction switching mechanism is installed on the back of the material receiving plate, and the adjustment direction is switched through a pair of helical bevel gears on the main gear shaft and a toggle sliding mechanism, thereby realizing the separate drive adjustment of the corresponding helical bevel gears, worm wheel and crank structure in the worm crank width adjustment mechanism; a pair of helical bevel gears in the adjustment direction switching mechanism are coaxially installed on the main gear shaft, and the main gear shaft is connected to the toggle sliding mechanism, which drives the main gear shaft and the two helical bevel gears thereon to slide through the toggle sliding mechanism, thereby realizing the separate connection with the two helical bevel gears in different adjustment directions.

2. The adjustable PCB carrier according to claim 1, characterized in that: The worm is mounted on the material receiving plate through a bearing seat and a bearing and is rotatable.

3. The adjustable PCB carrier according to claim 1, characterized in that: The crank is connected to the slider through a crank slider screw in combination with a bearing, and the end of the crank slider screw fixes the fixed column rod on the slider through a thread.

4. The adjustable PCB carrier according to claim 1, characterized in that: One end of the main gear shaft in the toggle sliding mechanism is connected to the guide column bearing seat through a bearing, and the guide column bearing seat is fixed in its axial position by the stepped protrusion on the main gear shaft and the bearing limit sleeve, and is linked with the main gear shaft, and the guide column on the guide column bearing seat can slide in the oblique guide groove of the oblique guide groove plate, the manual push piece and the oblique guide groove plate are connected by bolts, the oblique guide groove plate is in contact with the oblique guide groove plate slide plate, and the oblique guide groove plate can slide on the guide groove plate slide plate; the other end of the main gear shaft is in contact with the bearing seat sliding bracket through the sliding bearing seat, and the sliding bearing seat can slide in the bearing seat sliding bracket.

5. The adjustable PCB carrier according to claim 1, characterized in that: A conical rocker is wedged into the main gear shaft to form a tight connection.

6. The adjustable PCB carrier according to claim 1, characterized in that: The main gear shaft is circumferentially fixedly connected to the two helical bevel gears by means of set screws.

7. The adjustable PCB carrier according to claim 1, characterized in that: The upper surface of the material receiving plate is provided with guide grooves along the length direction and along both sides of the width direction.

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