Magnetic carrier plate jig for FPC (Flexible Printed Circuit) mounting process

Abstract

The utility model relates to the technical field of circuit board processing, and discloses a magnetic carrier plate jig for an FPC mounting process, which comprises a jig bottom plate, a positioning shell is fixedly connected to the center line position of the upper surface of the jig bottom plate, and a bidirectional adjusting screw rod is rotatably connected between the front and rear inner walls of the positioning shell. The surface of the bidirectional adjusting lead screw is in threaded connection with two movable plates. The positioning shell is arranged on the surface of the jig bottom plate, the distance between the two movable frames can be adjusted and positioned through the two-way adjusting lead screw in the positioning shell, the multiple movable magnetic attraction assemblies are arranged on the surfaces of the movable frames, and the magnetic attraction assemblies can move on the surfaces of the movable frames at will; and the corners of the circuit board can be clamped and fixed by using the plurality of magnetic attraction assemblies, so that the front-back and left-right spacing of the magnetic attraction assemblies can be adjusted conveniently according to the size of the circuit board, the limiting and stability of the circuit board are improved, and the surface of the circuit board can be subjected to surface mounting processing conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit board processing, and more specifically to a magnetic carrier fixture for FPC mounting process. Background Art

[0002] Flexible printed circuit (FPC) is a highly reliable and extremely flexible printed circuit board made of polyimide or polyester film as the base material. It has the characteristics of high wiring density, light weight, thin thickness, and good bendability. SMT technology has been widely used in its production. During the mounting process of the flexible circuit board, since the flexible circuit board itself is soft and has low mechanical strength, it is difficult to fix its position. Usually, the flexible circuit board is fixed on a magnetic carrier fixture to achieve precise positioning during the production process.

[0003] According to patent retrieval, a magnetic carrier fixture for FPC mounting process with the publication number of CN208434194U includes a fixture board, a magnetic carrier arranged on the surface of the fixture board, a steel plate installed on the surface of the magnetic carrier, and a circuit board fixing mechanism arranged on the surface of the steel plate. This magnetic carrier fixture for FPC mounting process fixes the magnetic carrier and the fixture board through the cooperation of the first positioning hole and the first positioning column, and fixes the magnetic carrier and the steel plate through the cooperation of the second positioning column and the second positioning hole. It can realize the limit fixation of the magnetic carrier through both sides of the magnetic carrier, and realize different clamping operations according to different shapes of the flexible circuit board.

[0004] When the magnetic carrier fixture proposed in the above patent is actually used, only springs and extrusion rods are arranged inside the fixture frame to limit the four sides of the circuit board. However, the stroke of the spring is extremely limited, resulting in poor adjustability of the fixture and inability to be applicable to limiting circuit boards of different sizes. Moreover, only the sliding grooves on the surface of the extrusion rod cannot stably clamp and fix the corners of the circuit board, resulting in insufficient stability of the circuit board during the processing. Therefore, it is necessary to improve the problems existing in this carrier fixture. Summary of the Utility Model

[0005] In order to overcome the above defects of the prior art, the utility model provides a magnetic carrier fixture for FPC mounting process to solve the problems existing in the above background art.

[0006] The utility model provides the following technical solution: A magnetic carrier fixture for FPC mounting process, including a fixture bottom plate. A positioning shell is fixedly connected to the midline position of the upper surface of the fixture bottom plate. A bidirectional adjustment screw rod is rotatably connected between the front and rear inner walls of the positioning shell. Two movable plates are threadedly connected to the surface of the bidirectional adjustment screw rod. The left and right sides of the movable plate extend to the outside of the positioning shell and are fixedly connected with linkage plates. An activity frame is fixedly connected to the upper surfaces of two corresponding linkage plates. A magnetic attraction component is slidably arranged inside the activity frame, and the magnetic attraction component is used for limiting and fixing the circuit board.

[0007] A strip-shaped adjustment hole is opened on the upper surface of the activity frame. The magnetic attraction component includes an activity column slidably connected to the inner wall of the strip-shaped adjustment hole. A strong magnetic positioning block is fixedly installed at the bottom end of the activity column through a bolt. A limit stop piece is fixedly connected to the top end of the activity column. A support cylinder is fixedly connected to the upper surface of the limit stop piece. A threaded hole is opened at the top end of the support cylinder, and an adjustment screw rod is threadedly connected to the inner wall of the threaded hole. A first rubber limit block is fixedly connected to the top end of the adjustment screw rod. A second rubber limit block is fixedly connected to the top end of the support cylinder, and the position of the second rubber limit block corresponds to that of the first rubber limit block.

[0008] Furthermore, two rectangular limit holes are opened on both the left and right sides of the positioning shell. The movable plate is slidably connected to the inner wall of the rectangular limit hole. The lower surface of the activity frame is slidably connected to the upper surface of the positioning shell.

[0009] Furthermore, the front end of the bidirectional adjustment screw rod extends to the outside of the positioning shell, and an adjustment knob is fixedly connected to the front end of the bidirectional adjustment screw rod.

[0010] Furthermore, the limit stop piece is slidably connected to the upper surface of the activity frame, and the limit stop piece is used for limiting the activity column.

[0011] Furthermore, side slide rails are fixedly arranged on both the left and right sides of the fixture bottom plate. A strip-shaped guide hole is opened on the surface of the side slide rail. A rectangular slider is slidably arranged inside the inner wall of the strip-shaped guide hole. Guide plates are fixedly connected to both the upper and lower surfaces of the rectangular slider.

[0012] Furthermore, a metal bellows is fixedly connected to the upper surface of the guide plate, and an LED lighting lamp is fixedly arranged at the top end of the metal bellows.

[0013] Furthermore, rubber plugging blocks are inserted and installed at both the left and right ends of the activity frame, and the rubber plugging blocks are used for plugging the openings at both ends of the activity frame.

[0014] Furthermore, a nut is fixedly connected to the upper surface of the first rubber limit block, and the nut is in a hexagonal structure.

[0015] Technical effects and advantages of the present utility model:

[0016] 1. By providing a positioning shell on the surface of the fixture base plate of the present utility model, the distance between the two movable frames can be adjusted and positioned through the bidirectional adjustment screw rod inside the positioning shell. Moreover, a plurality of movable magnetic attraction components are provided on the surface of the movable frame, and the magnetic attraction components can be moved arbitrarily on the surface of the movable frame, and the corners of the circuit board can be clamped and fixed by using the plurality of magnetic attraction components, so as to conveniently adapt and adjust the front, rear, left and right distances of the magnetic attraction components according to the size of the circuit board, improve the limit and stability of the circuit board, and further facilitate the surface mounting process of the circuit board.

[0017] 2. By providing a support cylinder and an adjustment screw rod, when clamping and fixing the circuit board, the first rubber limit block can be driven to move downward through the adjustment screw rod, so as to press and limit the circuit board between the first rubber limit block and the second rubber limit block, thereby improving the anti-slip effect on the circuit board and the stability of the circuit board during the processing.

[0018] 3. By providing side slide rails on both sides of the fixture base plate of the present utility model, the rectangular slider can be moved in the strip-shaped guide holes on the surface of the side slide rails, so as to conveniently adjust the position of the LED lighting lamp and facilitate the use of the LED lighting lamp to illuminate different positions of the circuit board. By providing a metal bellows, taking advantage of the characteristics that the metal bellows can be bent and shaped arbitrarily, the angle of the LED lighting lamp can be conveniently adjusted to achieve the purpose of convenient use. Description of the drawings

[0019] Figure 1 is the front view structural schematic diagram of the present utility model;

[0020] Figure 2 is the top view structural schematic diagram of the present utility model;

[0021] Figure 3 is the side sectional structural schematic diagram of the positioning shell of the present utility model;

[0022] Figure 4 is the side sectional structural schematic diagram of the movable frame of the present utility model;

[0023] Figure 5 is the front sectional structural schematic diagram of the magnetic attraction component of the present utility model;

[0024] Figure 6 is the front sectional structural schematic diagram of the side slide rail of the present utility model.

[0025] The reference numerals are: 1, fixture base plate; 2, positioning shell; 3, bidirectional adjustment screw rod; 4, movable plate; 5, linkage plate; 6, magnetic attraction assembly; 7, movable frame; 8, strip-shaped adjustment hole; 9, rectangular limit hole; 10, adjustment knob; 11, side slide rail; 12, strip-shaped guide hole; 13, rectangular slider; 14, guide plate; 15, metal bellows; 16, LED lighting lamp; 17, rubber plugging block.

[0026] 601, movable column; 602, strong magnetic positioning block; 603, support cylinder; 604, adjustment screw; 605, first rubber limit block; 606, second rubber limit block; 607, limit retaining piece; 608, nut. Specific embodiments

[0027] Next, the technical solutions in the present invention will be clearly and completely described in conjunction with the drawings in the present invention. In addition, the forms of each structure described in the following embodiments are merely examples. A magnetic carrier plate fixture for an FPC mounting process involved in the present invention is not limited to the structures described in the following embodiments. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0028] Referring to Figure 1-6 , the present invention provides a magnetic carrier plate fixture for an FPC mounting process, including a fixture base plate 1. Side slide rails 11 are fixedly arranged on both the left and right sides of the fixture base plate 1. A strip-shaped guide hole 12 is formed on the surface of the side slide rail 11. A rectangular slider 13 is slidably arranged on the inner wall of the strip-shaped guide hole 12. Guide plates 14 are fixedly connected to both the upper and lower surfaces of the rectangular slider 13.

[0029] A metal bellows 15 is fixedly connected to the upper surface of the guide plate 14. An LED lighting lamp 16 is fixedly arranged at the top of the metal bellows 15. It should be noted that the LED lighting lamp 16 is a rechargeable structure with a built-in battery, and the battery of the LED lighting lamp 16 can be charged through a USB data cable.

[0030] It is worth noting that by arranging side slide rails 11 on both sides of the fixture base plate 1, during use, the rectangular slider 13 can be moved in the strip-shaped guide hole 12 on the surface of the side slide rail 11, and at the same time, the metal bellows 15 is driven to move, so as to adjust the position of the LED lighting lamp 16. The LED lighting lamp 16 can be used to illuminate different positions of the circuit board. By arranging the metal bellows 15, taking advantage of the characteristics that the metal bellows 15 can be arbitrarily bent and shaped, it is convenient to adjust the angle of the LED lighting lamp 16 to achieve the purpose of convenient use.

[0031] A positioning shell 2 is fixedly connected to the midline position of the upper surface of the fixture base plate 1. A bidirectional adjustment screw rod 3 is rotatably connected between the front and rear inner walls of the positioning shell 2. The front end of the bidirectional adjustment screw rod 3 extends to the outside of the positioning shell 2, and a adjustment knob 10 is fixedly connected to the front end of the bidirectional adjustment screw rod 3.

[0032] Two movable plates 4 are threadedly connected to the surface of the bidirectional adjustment screw rod 3. Two rectangular limiting holes 9 are formed on both the left and right sides of the positioning shell 2. The movable plates 4 are slidably connected to the inner walls of the rectangular limiting holes 9. The lower surface of the movable frame 7 is slidably connected to the upper surface of the positioning shell 2.

[0033] Both the left and right sides of the movable plate 4 extend to the outside of the positioning shell 2 and are fixedly connected with linkage plates 5. The upper surfaces of two corresponding linkage plates 5 are fixedly connected with a movable frame 7. A magnetic attraction component 6 is slidably arranged inside the movable frame 7. The magnetic attraction component 6 is used for limiting and fixing the circuit board.

[0034] A strip-shaped adjustment hole 8 is formed on the upper surface of the movable frame 7. Rubber plugging blocks 17 are inserted and installed at both the left and right ends of the movable frame 7. The rubber plugging blocks 17 are used for plugging the openings at both ends of the movable frame 7.

[0035] It should be noted that by arranging a positioning shell 2 on the surface of the fixture base plate 1, when fixing the circuit board, first place the circuit board between the two movable frames 7, then rotate the adjustment knob 10 to drive the bidirectional adjustment screw rod 3 inside the positioning shell 2 to rotate, thereby driving the two movable plates 4 to move in the positioning shell 2, and at the same time driving the linkage plates 5 and the two movable frames 7 to move towards each other, so as to adjust the distance between the two movable frames 7 according to the width of the circuit board. Then, move the magnetic attraction component 6 arbitrarily on the surface of the movable frame 7, move the strong magnetic positioning block 602 inside the movable frame 7, and use the strong magnetic positioning block 602 to adsorb and fix on the inner bottom wall of the movable frame 7, which is convenient for adaptively adjusting the left and right distance of the magnetic attraction component 6 according to the length of the circuit board. Then, use multiple magnetic attraction components 6 to clamp and fix the corners of the circuit board, improve the limiting and stability of the circuit board, and thus facilitate the surface mounting process of the circuit board.

[0036] The magnetic attraction component 6 includes a movable column 601 slidably connected to the inner wall of the strip-shaped adjustment hole 8. A strong magnetic positioning block 602 is fixedly installed at the bottom end of the movable column 601 through a bolt. A limiting tab 607 is fixedly connected to the top end of the movable column 601. The limiting tab 607 is slidably connected to the upper surface of the movable frame 7. The limiting tab 607 is used for limiting the movable column 601.

[0037] The upper surface of the limit retaining piece 607 is fixedly connected with a support cylinder 603. A threaded hole is opened at the top end of the support cylinder 603. An adjusting screw rod 604 is threadedly connected to the inner wall of the threaded hole. The top end of the adjusting screw rod 604 is fixedly connected with a first rubber limit block 605. The upper surface of the first rubber limit block 605 is fixedly connected with a nut 608. The nut 608 has a hexagonal structure. The top end of the support cylinder 603 is fixedly connected with a second rubber limit block 606. The position of the second rubber limit block 606 corresponds to that of the first rubber limit block 605.

[0038] It should be noted that by setting up the magnetic attraction assembly 6 composed of the support cylinder 603 and the adjusting screw rod 604, when clamping and fixing the circuit board, place the corner part of the circuit board between the first rubber limit block 605 and the second rubber limit block 606, and then rotate the nut 608 to drive the adjusting screw rod 604 to rotate, thereby driving the first rubber limit block 605 to move downward, so as to press and limit the circuit board between the first rubber limit block 605 and the second rubber limit block 606, and then clamp the circuit board, thus improving the stability of the circuit board during the processing.

[0039] Finally, it should be noted that in the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are involved. The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A magnetic carrier jig for FPC mounting process, comprising a jig bottom plate (1), characterized in that: A positioning shell (2) is fixedly connected to the midline position of the upper surface of the fixture base plate (1); a bidirectional adjustment screw rod (3) is rotatably connected between the front and rear inner walls of the positioning shell (2); two movable plates (4) are threadedly connected to the surface of the bidirectional adjustment screw rod (3); both left and right sides of the movable plate (4) extend to the outside of the positioning shell (2) and are fixedly connected to a linkage plate (5); a movable frame (7) is fixedly connected to the upper surface of the linkage plates (5) at two corresponding positions; a magnetic attraction component (6) is slidably arranged inside the movable frame (7); the magnetic attraction component (6) is used to limit and fix the circuit board; The upper surface of the movable frame (7) is provided with a strip-shaped adjustment hole (8); the magnetic attraction component (6) comprises a movable column (601) slidably connected to the inner wall of the strip-shaped adjustment hole (8); a strong magnetic positioning block (602) is fixedly installed at the bottom end of the movable column (601) by means of bolts; a limit stopper (607) is fixedly connected to the top end of the movable column (601); a support tube (603) is fixedly connected to the upper surface of the limit stopper (607); a threaded hole is provided at the top end of the support tube (603); an adjusting screw (604) is threadedly connected to the inner wall of the threaded hole; a first rubber limit block (605) is fixedly connected to the top end of the adjusting screw (604); a second rubber limit block (606) is fixedly connected to the top end of the support tube (603); the position of the second rubber limit block (606) corresponds to that of the first rubber limit block (605).

2. The magnetic carrier jig for FPC mounting process according to claim 1, characterized in that: Two rectangular limiting holes (9) are provided on both the left and right sides of the positioning shell (2); the movable plate (4) is slidably connected to the inner walls of the rectangular limiting holes (9); and the lower surface of the movable frame (7) is slidably connected to the upper surface of the positioning shell (2).

3. The magnetic carrier jig for FPC mounting process according to claim 1, characterized in that: The front end of the bidirectional adjustment screw rod (3) extends to the outside of the positioning shell (2), and the front end of the bidirectional adjustment screw rod (3) is fixedly connected to an adjustment knob (10).

4. The magnetic carrier jig for FPC mounting process according to claim 1, characterized in that: The position-limiting baffle (607) is slidably connected to the upper surface of the movable frame (7), and the position-limiting baffle (607) is used to limit the position of the movable column (601).

5. The magnetic carrier jig for FPC mounting process according to claim 1, characterized in that: Side slide rails (11) are fixedly arranged on both left and right sides of the fixture base plate (1), and strip guide holes (12) are opened on the surface of the side slide rails (11). Rectangular sliders (13) are slidably arranged on the inner wall of the strip guide holes (12), and guide plates (14) are fixedly connected to the upper and lower surfaces of the rectangular sliders (13).

6. The magnetic carrier jig for FPC mounting process according to claim 5, characterized in that: A metal bellows (15) is fixedly connected to the upper surface of the guide plate (14), and an LED lighting lamp (16) is fixedly arranged on the top end of the metal bellows (15).

7. The magnetic carrier jig for FPC mounting process according to claim 1, characterized in that: Rubber sealing blocks (17) are inserted and installed at both left and right ends of the movable frame (7), and the rubber sealing blocks (17) are used to seal the openings at both ends of the movable frame (7).

8. The magnetic carrier jig for FPC mounting process according to claim 1, characterized in that: A nut (608) is fixedly connected to the upper surface of the first rubber limiting block (605), and the nut (608) is in a hexagonal structure.

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