CNC positioning jig of circuit board

Abstract

The utility model is applicable to the technical field of circuit board positioning jigs, and provides a CNC (computer numerical control) positioning jig for a circuit board, which comprises a mounting frame arranged on a CNC machine tool, the positioning frame is placed in the mounting frame; the supporting plate is fixedly mounted in the positioning frame; the clamping plate is arranged above the mounting frame; the buffer pads are respectively arranged on the clamping plate and the supporting plate; and the driving mechanism is arranged on the mounting frame and is used for driving the clamping plates to slide. The CNC positioning jig for the circuit board provided by the scheme has the advantages that the circuit board can be quickly positioned, so that the processing efficiency of the circuit board can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of circuit board positioning fixtures, and particularly relates to a CNC positioning fixture for circuit boards. Background Art

[0002] The CNC positioning fixture for circuit boards is a tool designed specifically for positioning circuit boards during CNC (computer numerical control) machining. This kind of fixture is widely used in fields such as electronic manufacturing and precision machining, mainly to ensure the precise position of the circuit board during the machining process, thereby improving the machining accuracy and efficiency.

[0003] Currently, traditional circuit board positioning fixtures usually use bolts to push clamping blocks to clamp and fix the circuit board. Although this fixing method is firm, the operation efficiency is relatively low, which in turn affects the subsequent machining efficiency of the circuit board. Summary of the Utility Model

[0004] The utility model provides a CNC positioning fixture for circuit boards, aiming to solve the problem that the traditional circuit board positioning fixture cannot quickly position the circuit board as proposed in the above background art.

[0005] To solve the above problems, the utility model is implemented as follows. A CNC positioning fixture for circuit boards includes: a mounting frame provided on a CNC machine tool; a positioning frame placed inside the mounting frame; a support plate fixedly installed inside the positioning frame; a clamping plate provided above the mounting frame; buffer pads respectively provided on the clamping plate and the support plate; and a driving mechanism provided on the mounting frame for driving the clamping plate to slide.

[0006] Preferably, the driving mechanism includes: a connection port opened on the mounting frame; a fixing plate fixedly installed at the bottom of the mounting frame; a threaded rod rotatably installed on the fixing plate, and the threaded rod is located inside the connection port; a sliding plate threadedly sleeved on the threaded rod, and the sliding plate is in sliding contact with the connection port; and a connection mechanism provided on the mounting frame.

[0007] Preferably, the connection mechanism includes: a driving wheel fixedly sleeved on the threaded rod; a belt sleeved on the driving wheel; and a motor fixedly installed at the bottom of the mounting frame, and the output shaft of the motor is fixedly connected to the threaded rod.

[0008] Preferably, a guiding groove is opened on one side of the sliding plate, and a guiding block is fixedly installed at the top of the mounting frame, and the guiding block is in sliding contact with the guiding groove.

[0009] Preferably, an arc-shaped plate is fixedly installed at the bottom of the mounting frame, and the arc-shaped plate is located above the belt.

[0010] Preferably, a rectangular frame is fixedly mounted on the slide plate, the rectangular frame is slidably connected to the clamping plate, a plurality of positioning grooves are formed on the clamping plate, a positioning block is slidably mounted on the rectangular frame, and the positioning block is adapted to the positioning groove.

[0011] Preferably, a connecting plate is provided above the rectangular frame, the connecting plate is fixedly connected to the positioning block, a compression spring is fixedly installed at the bottom of the connecting plate, the bottom end of the compression spring is fixedly connected to the rectangular frame, a fixing bolt is threadedly installed on one side of the mounting frame, and one end of the fixing bolt is in contact with the positioning frame.

[0012] Compared with the related art, the CNC positioning fixture for the circuit board provided by the utility model has the following beneficial effects:

[0013] 1. The clamping plate is driven to move by the driving mechanism, so that the clamping plate can position the circuit board, and the positioning efficiency is high. At the same time, the force generated when the clamping plate slides down is buffered by the buffer pad, which can ensure that the circuit board will not be damaged during positioning. The sliding plate is driven to slide by the threaded rod, so as to realize the rapid movement of the clamping plate, which is conducive to improving the positioning of the circuit board. The synchronous sliding operation of a group of clamping plates is realized by the combination of the driving wheel and the belt, which is conducive to the positioning of the circuit board;

[0014] 2. The slide plate is limited by the guide block to ensure that the slide plate will not be separated from the connection port. The limiting effect is good. The belt is shielded by the curved plate to ensure that waste materials will not be discharged on the belt, thereby protecting the belt and improving the service life of the belt.

[0015] 3. The positioning block is connected to the positioning groove, so that the clamping plate can be quickly adjusted, and the adjustment efficiency is high. It is also beneficial for the clamping plate to clamp circuit boards of different sizes. The setting of the compression spring can effectively prevent the positioning block from leaving the positioning groove, which is beneficial to the fixing operation of the clamping plate.

[0016] Compared with the prior art, the CNC positioning fixture for the circuit board provided by the present solution can position the circuit board more quickly, thereby facilitating the advantage of improving the processing efficiency of the circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main cross-sectional structure of a CNC positioning fixture for a circuit board provided by the utility model;

[0018] Figure 2 It is a side view cross-sectional structural schematic diagram of a CNC positioning fixture for a circuit board provided by the utility model;

[0019] Figure 3It is a top - view structural schematic diagram of the mounting frame and the positioning frame provided by the present utility model;

[0020] Figure 4 It is a front - view sectional structural schematic diagram of the mounting frame and the positioning frame provided by the present utility model;

[0021] Figure 5 For Figure 4 an enlarged structural schematic diagram of part A shown in

[0022] Reference numerals: 1, mounting frame; 2, positioning frame; 3, support plate; 4, clamping plate; 5, buffer pad; 6, connection port; 7, fixing plate; 8, threaded rod; 9, sliding plate; 10, driving wheel; 11, belt; 12, motor; 13, guiding groove; 14, guiding block; 15, arc - shaped plate; 16, rectangular frame; 17, positioning groove; 18, positioning block; 19, compression spring; 20, fixing bolt. Detailed implementation manners

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs; the terms used in the description of this application in the specification are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above - mentioned drawings are intended to cover non - exclusive inclusion. The terms "first", "second", etc. in the specification and claims of this application or the above - mentioned drawings are used to distinguish different objects and are not used to describe a specific order; the terms "inside", "outside", "left", "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present utility model.

[0024] Referring to "embodiment" herein means that the specific features, structures or characteristics described in connection with the embodiment can be included in at least one embodiment of this application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0025] An embodiment of the present utility model provides a CNC positioning fixture for a circuit board, as Figures 1-5As shown in the figure, the CNC positioning fixture for the circuit board includes: a mounting bracket 1 provided on the CNC machine tool; a positioning bracket 2 placed inside the mounting bracket 1; a support plate 3 fixedly installed inside the positioning bracket 2; a clamping plate 4 provided above the mounting bracket 1; buffer pads 5 respectively provided on the clamping plate 4 and the support plate 3; and a driving mechanism provided on the mounting bracket 1 for driving the clamping plate 4 to slide.

[0026] In this embodiment, when it is necessary to position the circuit board, first, place it on the positioning bracket 2 so that the support plate 3 supports the circuit board. At the same time, the buffer pad 5 on the support plate 3 contacts the bottom of the circuit board. Then start the driving mechanism, so that the driving mechanism drives the clamping plate 4 to slide down, causing the clamping plate 4 to drive the buffer pad 5 to slide down, and then making the two buffer pads 5 approach each other, clamping the two buffer pads 5 on the circuit board to perform positioning and fixing operations on the circuit board. Then the CNC machine tool can be started to perform processing operations on the circuit board. By driving the clamping plate 4 to move through the driving mechanism, the clamping plate 4 can perform positioning operations on the circuit board, with relatively high positioning efficiency. At the same time, the force generated when the clamping plate slides is buffered by the buffer pad 5, which can ensure that the circuit board will not be damaged during positioning.

[0027] In a further preferred embodiment of the present invention, the driving mechanism includes: a connection port 6 opened on the mounting bracket 1; a fixing plate 7 fixedly installed at the bottom of the mounting bracket 1; a threaded rod 8 rotatably installed on the fixing plate 7, and the threaded rod 8 is located inside the connection port 6; a sliding plate 9 threadedly sleeved on the threaded rod 8, and the sliding plate 9 is in sliding contact with the connection port 6; and a connection mechanism provided on the mounting bracket 1.

[0028] In this embodiment, when driving the clamping plate 4 to slide down, first start the motor 12 in the connection mechanism, so that the output shaft of the motor 12 drives the threaded rod 8 to rotate, causing the threaded rod 8 to drive the sliding plate 9 to slide, so that the sliding plate 9 slides along the connection port 6, and the sliding plate 9 drives the clamping plate 4 to slide synchronously, thereby performing positioning and fixing operations on the circuit board. By driving the sliding plate 9 to slide through the threaded rod 8, the movement operation of the clamping plate 4 can be quickly realized, which is beneficial to improving the positioning operation of the circuit board.

[0029] In a further preferred embodiment of the present invention, the connection mechanism includes: a driving wheel 10 fixedly sleeved on the threaded rod 8; a belt 11 sleeved on the driving wheel 10; and a motor 12 fixedly installed at the bottom of the mounting bracket 1, and the output shaft of the motor 12 is fixedly connected to the threaded rod 8.

[0030] In this embodiment, when driving the splint 4 to move, the motor 12 is first started so that the output shaft of the motor 12 drives the threaded rod 8 to rotate. When the threaded rod 8 rotates, the driving wheel 10 is driven to rotate synchronously, so that the driving wheel 10 drives the belt 11 to rotate, and the belt 11 synchronously drives a group of driving wheels 10 to rotate, thereby causing a group of splints 4 to slide synchronously. By using the driving wheel 10 and the belt 11 in combination, the synchronous sliding operation of a group of splints can be realized, which is beneficial to the positioning operation of the circuit board.

[0031] In a further preferred embodiment of the utility model, a guide groove 13 is provided on one side of the slide plate 9 , and a guide block 14 is fixedly installed on the top of the mounting frame 1 , and the guide block 14 is in sliding contact with the guide groove 14 .

[0032] In this embodiment, when the slide plate 9 slides, the guide groove 14 slides along the guide block 14, so that the guide block 14 limits the slide plate 9, ensuring that the slide plate 9 will not be separated from the connecting port 6. The slide plate 9 is limited by the guide block 14, thereby ensuring that the slide plate 9 will not be separated from the connecting port 6, and the limiting effect is better.

[0033] In a further preferred embodiment of the present invention, an arc-shaped plate 15 is fixedly mounted on the bottom of the mounting frame 1 , and the arc-shaped plate 15 is located above the belt 11 .

[0034] In this embodiment, waste generated during the processing of the circuit board is discharged through the bottom of the mounting frame 1, and at the same time the arc plate 15 guides the waste to ensure that the waste is not discharged on the belt 11, which is beneficial to the operation of the belt 11. The arc plate 15 shields the belt 11 to ensure that the waste is not discharged on the belt 11, thereby protecting the belt 11 and helping to increase the service life of the belt 11.

[0035] In a further preferred embodiment of the utility model, a rectangular frame 16 is fixedly installed on the skateboard 9, and the rectangular frame 16 is slidably connected to the clamp plate 4. A plurality of positioning grooves 17 are provided on the clamp plate 4, and a positioning block 18 is slidably installed on the rectangular frame 16, and the positioning block 18 is adapted to the positioning groove 17.

[0036] In this embodiment, when replacing the positioning frame 2 of different sizes, the positioning frame is first removed from the mounting frame and replaced. After the replacement, the positioning block 18 is moved away from the positioning groove 17, and then the clamping plate 4 is slid so that the clamping plate 4 slides along the rectangular frame 16, thereby adjusting the spacing of a group of clamping plates 4 to make them close to each other. After the spacing of a group of clamping plates 4 is adjusted, the positioning block 18 is stuck in the positioning groove 17 to fix the clamping plate 4, which is beneficial to the subsequent positioning operation of the circuit board. The positioning block is connected to the positioning groove 17, so that the clamping plate 4 can be quickly adjusted, and the adjustment efficiency is high. At the same time, it is also beneficial for the clamping operation of the circuit boards of different sizes by the clamping plate 4.

[0037] In a further preferred embodiment of the utility model, a connecting plate is provided above the rectangular frame 16, and the connecting plate is fixedly connected to the positioning block 18. A compression spring 19 is fixedly installed at the bottom of the connecting plate, and the bottom end of the compression spring 19 is fixedly connected to the rectangular frame 16. A fixing bolt 20 is threadedly installed on one side of the mounting frame 1, and one end of the fixing bolt 20 is in contact with the positioning frame 2.

[0038] In this embodiment, when the positioning block 18 is away from the positioning groove 17, the compression spring 19 is stretched at the same time. After the splint 4 is adjusted, the connecting plate is loosened to reset the compression spring 19, thereby snapping the positioning block 18 into the positioning groove 17 to position the splint 4. The setting of the compression spring 19 can effectively prevent the positioning block 18 from being separated from the positioning groove 17, which is beneficial to the fixing operation of the splint 4.

[0039] In summary, compared with the related art, the present device can position the circuit board more quickly, thereby facilitating the improvement of the processing efficiency of the circuit board.

[0040] In the several embodiments provided in this application, it should be understood that the disclosed device can be implemented in other ways.

[0041] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit the protection scope of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Although the utility model has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the utility model according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the utility model in essence, and these technical solutions also belong to the scope of protection of the utility model.

Claims

1. A CNC positioning fixture for a circuit board, characterized in that: include: A mounting frame mounted on a CNC machine tool; a positioning frame placed in the mounting frame; A support plate fixedly mounted in the positioning frame; a clamping plate disposed above the mounting frame; Buffer pads respectively arranged on the clamping plate and the supporting plate; A driving mechanism is arranged on the mounting frame and is used for driving the clamping plate to slide.

2. The CNC positioning fixture for a circuit board as claimed in claim 1, characterized in that: The driving mechanism comprises: A connection port provided on the mounting frame; A fixing plate fixedly mounted on the bottom of the mounting frame; Rotating a threaded rod mounted on the fixing plate, wherein the threaded rod is located in the connecting port; A slide plate threadably sleeved on the threaded rod, the slide plate being in sliding contact with the connecting port; A connecting mechanism is arranged on the mounting frame.

3. The CNC positioning fixture for a circuit board as claimed in claim 2, characterized in that: The connecting mechanism comprises: A driving wheel fixedly sleeved on the threaded rod; A belt sleeved on the driving wheel; A motor is fixedly mounted on the bottom of the mounting frame, and an output shaft of the motor is fixedly connected to the threaded rod.

4. The CNC positioning fixture for a circuit board as claimed in claim 2, characterized in that: A guide groove is provided on one side of the slide plate, and a guide block is fixedly installed on the top of the mounting frame, and the guide block is in sliding contact with the guide groove.

5. The CNC positioning fixture for a circuit board as claimed in claim 3, characterized in that: An arc-shaped plate is fixedly mounted on the bottom of the mounting frame, and the arc-shaped plate is located above the belt.

6. The CNC positioning fixture for a circuit board as claimed in claim 2, characterized in that: A rectangular frame is fixedly mounted on the slide plate, the rectangular frame is slidably connected to the clamping plate, a plurality of positioning grooves are provided on the clamping plate, a positioning block is slidably mounted on the rectangular frame, and the positioning block is adapted to the positioning groove.

7. The CNC positioning fixture for a circuit board as claimed in claim 6, characterized in that: A connecting plate is provided above the rectangular frame, the connecting plate is fixedly connected to the positioning block, a compression spring is fixedly installed at the bottom of the connecting plate, the bottom end of the compression spring is fixedly connected to the rectangular frame, a fixing bolt is threadedly installed on one side of the mounting frame, and one end of the fixing bolt is in contact with the positioning frame.

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