CN210579483U

CN210579483U - Circuit board clamp

Info

Publication number: CN210579483U
Application number: CN201920395199.0U
Authority: CN
Inventors: 谭志坤
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-03-27
Filing date: 2019-03-27
Publication date: 2020-05-19
Anticipated expiration: 2029-03-27

Abstract

The utility model provides a circuit board clamp, including main part, fixed arm, digging arm and cylinder, wherein: the tail end of the fixed arm is fixed on the main body part, the middle part of the movable arm is hinged and fixed on the main body part through a pin shaft, and the fixed arm and the movable arm are arranged oppositely; the cylinder is positioned in the main body part and pushes the tail end of the movable arm through a piston rod, so that the fixed arm and the movable arm are respectively pressed on the two side surfaces of the circuit board to be fixed and clamp the circuit board; the utility model discloses a set up digging arm and fixed arm, can treat the direction of fixed circuit board by the perpendicular to and press from both sides tight fixedly, simple structure is reasonable to effectual reduction anchor clamps volume is favorable to using in the limited environment in space, and application scope is more extensive and can practice thrift manufacturing cost.

Description

Circuit board clamp

Technical Field

The embodiment of the utility model provides a relate to the frock clamp field, more specifically say, relate to a circuit board clamp.

Background

With the rapid development of the manufacturing industry in China, the mechanical equipment plays more and more important roles, and particularly, automatic mechanical equipment appears successively, so that manual production is gradually replaced, and the production efficiency is continuously improved. The automatic equipment generally needs to utilize a clamp to correspondingly position or fix a product in the operation process; therefore, the application of the clamp plays a very important role in mechanical equipment.

In the automatic production equipment of circuit boards, when the circuit boards are transferred to the working positions of the punching machine equipment, the circuit boards need to be ensured to be accurate in position, and in a plurality of circuit board groups which are overlapped together, the relative positions of the circuit boards need to be ensured not to be staggered when the circuit boards are transferred. At present, circuit board transferring is mainly realized by clamping two sides of a circuit board in the horizontal direction through a circuit board clamp and clamping and fixing, but the horizontal size of the circuit board is usually larger, so that the volume design of the circuit board clamp is greatly limited by a fixing mode of clamping in the horizontal direction, thus interference damage or incapability of use is easy to occur in an environment with a small transferring space, the application range is relatively smaller, and the practicability is insufficient; particularly, the end faces of the two horizontal sides of the circuit board are generally cutting faces, clamping dislocation can be caused due to inclination or inconsistent width of the whole end face of the circuit board, the clamping positioning effect is poor, and the stability is insufficient.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a to above-mentioned current circuit board anchor clamps volume design restricted, can't use in the limited environment in space, application scope is less relatively and the not enough problem of stability, provides a new circuit board anchor clamps.

The embodiment of the utility model provides a solve above-mentioned technical problem's technical scheme is, provide a circuit board clamp, including main part, fixed arm, digging arm and cylinder, wherein: the tail end of the fixed arm is fixed on the main body part, the middle part of the movable arm is hinged and fixed on the main body part through a pin shaft, and the fixed arm and the movable arm are arranged oppositely; the cylinder is located in the main body part, and the cylinder pushes the tail end of the movable arm through the piston rod, so that the fixed arm and the movable arm are respectively pressed on the surfaces of two sides of a circuit board to be fixed and clamp the circuit board.

Preferably, the circuit board includes the reference column that is used for the location, the head end of fixed arm is equipped with reference portion, the lateral surface of reference portion have with reference column assorted draw-in groove, and when the digging arm and the fixed arm press from both sides tightly to treat fixed circuit board, the fixed arm will treat fixed circuit board's reference column joint location in the draw-in groove.

Preferably, the head end of the movable arm has a clamping portion corresponding to the reference portion, and when the movable arm and the fixed arm clamp the circuit board to be fixed, the reference portion and the clamping portion are respectively attached to the upper surface and the lower surface of the circuit board to be fixed, and the reference portion and the clamping portion are overlapped in an orthographic projection area of the circuit board to be fixed.

Preferably, the clamping portion is fixed at the head end of the movable arm in a hinged mode through a pin shaft, the clamping portion faces the end face of the fixed arm to form a first pressing surface, and a first cushion pad made of elastic materials is fixedly mounted on the first pressing surface.

Preferably, the lower part of the fixing arm protrudes out of the bottom surface of the main body part, and the width of the lower part of the fixing arm is smaller than that of the main body part; the reference part of the fixed arm protrudes towards the movable arm and forms a second compression joint surface, the second compression joint surface is coplanar with or lower than the bottom surface of the main body part, and a second cushion pad made of elastic materials is fixedly installed on the second compression joint surface.

Preferably, the clamping groove is perpendicular to the second crimping surface of the reference portion, and a radial cross section of the clamping groove is U-shaped.

Preferably, the main body part comprises a bottom surface and a top surface which are arranged in parallel, the bottom surface is provided with a strip-shaped groove matched with the width of the fixing arm, and the fixing arm is fixed to the strip-shaped groove through a screw;

the top surface is provided with a strip-shaped cavity matched with the width of the movable arm, and the main body part and the hinge position of the movable arm in hinge fit are arranged in the strip-shaped cavity.

Preferably, the main body part is further connected with a spring for restoring the movable arm, and one edge of the spring abuts against the movable arm.

Preferably, the main body part is provided with a spring groove corresponding to the spring, the spring is installed in the spring groove, and one edge of the spring abuts against the lower surface between the middle part and the head end of the movable arm.

Preferably, the movable arm is further provided with an inductor mounting position for mounting an in-place detection inductor, and when the inductor arranged at the inductor mounting position detects a circuit board to be fixed, the fixed arm and the movable arm press the circuit board;

an avoidance groove for avoiding the edge of the piston rod is arranged at the position adjacent to the tail part of the movable arm; when the piston rod extends out, the tail part of the movable arm is always contacted with the middle part of the piston rod of the air cylinder.

The utility model discloses circuit board anchor clamps have following beneficial effect: through setting up digging arm and fixed arm, can press from both sides tightly fixedly by the direction of perpendicular to circuit board, simple structure is reasonable to effectual reduction anchor clamps volume is favorable to using in the limited environment in space, and application scope is more extensive and can practice thrift manufacturing cost. And, through set up the draw-in groove at the digging arm, can effective location treat fixed circuit board, guarantee to press from both sides from the direction of perpendicular to circuit board and press from both sides tight when fixed circuit board is treated to fixed the dislocation of drunkenness, stability and practicality are high.

Furthermore, the embodiment of the utility model provides a still set up the clamping part through articulated installation, can be compatible to the fixed circuit board of treating of different thickness press from both sides tightly fixedly, and compatibility is high.

Drawings

Fig. 1 is a schematic perspective structural view of a circuit board clamp provided in an embodiment of the present invention;

fig. 2 is an exploded schematic view of a fixing arm of a circuit board clamp according to an embodiment of the present invention;

fig. 3 is an exploded schematic view of a movable arm of a circuit board clamp according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1, the embodiment of the present invention provides a perspective structure diagram of a circuit board clamp, and the circuit board clamp can be applied to the field of mechanical equipment, for example, in a circuit board processing device. Referring to fig. 2 and 3, the circuit board fixture in this embodiment includes a main body 1, a fixed arm 2, a movable arm 3, and a cylinder 4, wherein: the tail end 21 of the fixed arm 2 is fixed on the main body part 1, the middle part 31 of the movable arm 3 is hinged and fixed on the main body part 1 through a pin shaft, and the fixed arm 2 and the movable arm 3 are arranged oppositely; the cylinder 4 is positioned in the main body part 1, and the cylinder 4 pushes the tail end 32 of the movable arm 3 through the piston rod, so that the fixed arm 2 and the movable arm 3 are respectively pressed on the two side surfaces of the circuit board to be fixed and clamp the circuit board.

The circuit board clamp is provided with the movable arm 3 and the fixed arm 2, and is clamped and fixed in the direction perpendicular to the circuit board, the structure is simple, and the circuit board clamp is different from the existing circuit board clamp in that the circuit board clamp is clamped and fixed in the horizontal direction of the circuit board, so that the length of the clamping arm of the circuit board clamp is relatively small, the thickness change in a set range is more easily compatible, the size of the circuit board clamp is effectively reduced, the circuit board clamp is favorable for being used in an environment with limited space, and the application range is wider; the manufacturing cost is low, and the practicability is high; in addition, because of the upper and lower surface of circuit board relative horizontal direction both sides cut the face more smooth, during the centre gripping, the contact surface of circuit board anchor clamps and circuit board is more thorough, makes to press from both sides tightly more firmly stable.

In the circuit board processing equipment, the circuit board includes a positioning column for positioning (especially when multiple circuit boards are stacked together, the relative position between the multiple stacked circuit boards can be positioned by the positioning column), correspondingly, the head end of the fixing arm 2 of the embodiment is provided with a reference part 22, the outer side surface of the reference part 22 is provided with a clamping groove 221 matched with the positioning column of the circuit board, and when the movable arm 3 and the fixing arm 2 clamp the circuit board tightly, the fixing arm 2 clamps and positions the positioning column of the circuit board to be fixed in the clamping groove 221.

This embodiment circuit board anchor clamps sets up draw-in groove 221 through the head end at digging arm 3, the realization is fixed a position the joint of reference column on the circuit board, can avoid circuit board or circuit board group whole to take place the drunkenness dislocation on the horizontal direction of circuit board, and can make every batch higher to circuit board or circuit board group whole fixed repeated positioning accuracy, stability and uniformity are improved, and it is regularly to have effectively avoidd the vertical direction clamp fastening from the circuit board, circuit board or circuit board group whole need spacing problem in the horizontal direction, moreover, the steam generator is simple in structure, therefore, the clothes hanger is strong in practicability.

Specifically, the head end of the movable arm 3 has a clamping portion 33 corresponding to the reference portion 22, and when the movable arm 3 and the fixed arm 2 clamp the circuit board to be fixed, the reference portion 22 and the clamping portion 33 are respectively attached to the upper surface and the lower surface of the circuit board, and the reference portion 22 and the clamping portion 33 are overlapped in the orthographic projection area of the circuit board to be fixed; the reference part 22 and the clamping part 33 are coaxial, the clamping force can be in the vertical direction when the circuit board to be fixed is clamped, the contact area is enlarged, the fixation is firmer and more reliable, and the stability is further improved.

In order to ensure that the reference part 22 and the clamping part 33 are coaxial, the clamping part 33 can be hinged and fixed at the head end of the movable arm 3 through a pin shaft, the clamping part 33 can swing within a set range by taking the pin shaft as the center in a hinged connection mode, and when the circuit board is clamped, the clamping surface of the clamping part 33 can be ensured to be horizontally contacted with the upper surface of the circuit board at different clamping thicknesses, so that the circuit board can be compatibly used in different circuit board thicknesses overlapped in different quantities, and the clamping force is ensured to be in the vertical direction when the circuit board is clamped by the movable arm 3 and the fixed arm 2, and the compatibility is high; and the clamping part 33 forms the first crimping face towards the terminal surface of fixed arm 2, the installation is fixed (can pass the joint, the connection mode such as bonding or inlaying is installed fixedly) on the first crimping face has the first blotter 331 of being made by elastic material (for example rubber, high-strength rubber etc.), through the characteristic that elastic material atress warp and have great static friction power, not only can make the contact of clamping face more firm, can also protect the circuit board by soft contact extrusion, avoid hard contact to cause the damage.

Further, the reference portion 22 of the fixed arm 2 protrudes toward the movable arm 3 and forms a second pressing surface, and a second cushion 222 made of an elastic material (such as rubber, high-strength rubber, etc.) is fixedly mounted on the second pressing surface (which can be fixedly mounted by a connection method such as clamping, bonding, or embedding); the circuit board can be further protected and stability can be improved by cooperating with the first cushion 331 on the clamping portion 33.

In addition, the lower part of the fixing arm 2 protrudes out of the bottom surface of the main body part 1, and the width of the lower part of the fixing arm 2 is smaller than that of the main body part 1; in the practical application of the circuit board processing equipment, the circuit board clamp can be matched with a guide mechanism for use, and the whole guide transfer of the circuit board clamp can be realized by arranging a guide groove matched with the width of the fixing arm 2 on the guide mechanism and clamping the part of the fixing arm 2 protruding out of the main body part 1 into the guide groove; in particular, the second pressing surface is coplanar with or lower than the bottom surface of the main body 1, that is, when the movable arm is guided and transferred, the reference part 22 of the fixed arm 2 is positioned in the guide groove of the guide mechanism in a way that the second pressing surface is coplanar with the surface of the guide mechanism; at this moment, guiding mechanism can support the circuit board, reduces the vertical atress of fixed arm 2, improves stability and reliability.

Specifically, the card slot 221 is perpendicular to the second pressing surface of the reference portion 22, and a radial cross section of the card slot 221 is U-shaped. Of course, in specific applications, the shape of the card slot 221 may also be set according to the positioning column of the circuit board, and the card slot has a simple structure and high flexibility.

In practical application, the circuit board clamp provided by the embodiment can also be used for clamping and fastening other materials to be fixed positioned through the positioning column, the positioning column is clamped through the clamping groove 221 to realize positioning, and the materials to be fixed are clamped by the fixed arm 2 and the movable arm 3.

Specifically, the main body part 1 comprises a bottom surface and a top surface which are arranged in parallel, the bottom surface is provided with a strip-shaped groove matched with the width of the fixing arm 2, and the fixing arm 2 is fixed in the strip-shaped groove through a screw; the installation is convenient and quick in installation and maintenance by being installed in the strip-shaped groove in a threaded connection fixing mode; and it is spacing to fixed arm 2 through the bar groove, restricts the drunkenness of fixed arm 2 in the horizontal direction, can improve the stability of fixed arm 2. In practical application, the fixing can be performed by other connection methods, such as welding, but this will reduce the convenience of the assembly maintenance operation, and the assembly precision is difficult to guarantee.

Similarly, the top surface of the main body part 1 is provided with a strip-shaped cavity matched with the width of the movable arm 3, and the hinging position of the main body part 1, which is in hinged fit with the movable arm 3, is arranged in the strip-shaped cavity; the limiting of the movable arm 3 is facilitated, the moving dislocation of the movable arm 3 in the horizontal direction is avoided, the overall strength and the assembly precision are improved, and the stability is high; and, inlay the main part of digging arm 3 in the second bar inslot, can effectual protection digging arm 3, avoid external shock to cause the damage, simple structure is reasonable, and the practicality is strong.

In addition, the main body 1 is connected with a spring for restoring the movable arm 3, and one edge of the spring abuts against the movable arm 3. The spring of the circuit board clamp of the embodiment can be a cylindrical spring, and the main body part 1 can be provided with a spring groove 11 corresponding to the spring; the spring is arranged in the spring groove 11, and one end of the spring is propped against the lower surface between the middle part 31 and the head end of the movable arm 3; and in concrete application, can set up the step screens that correspond with the spring between the middle part 31 of digging arm 3 to the head end, spacing the spring, prevent the spring drunkenness, improve stability.

Of course, in actual use, a torsion spring may be used, and the two end portions of the torsion spring are respectively abutted against the main body portion 1 and the movable arm 3 by being mounted on a pin shaft where the movable arm 3 is hinged to the main body portion 1, thereby realizing the retraction and return of the movable arm 3.

Specifically, when the piston rod of the cylinder 4 pushes the tail end 32 of the movable arm 3, the clamping part 33 at the head end of the movable arm 3 is pressed downwards in a linkage manner, the spring is compressed and deformed, and then the clamping part 33 is uniformly descended and clamped under the action of the deformation-resisting elasticity of the spring; and when the clamping is loosened, the air source is disconnected, the piston rod of the air cylinder 4 and the movable arm 3 return to the original positions under the action of the deformation elasticity of the spring, and the next clamping action is waited. At the moment, the air cylinder 4 can use a spring type single-acting air cylinder, the control is completed by connecting a single-control type electromagnetic valve, and when the clamp is clamped, the air cylinder 4 is communicated with an air source; when the clamp is clamped and loosened, the air cylinder 4 is communicated with the atmosphere (the gas inside the cylinder body of the exhaust air cylinder 4 is exhausted), and then the movable arm 3 is returned to the original position under the action of the spring, so that the structure is simple and practical, and the manufacturing cost is low. Of course, in practical applications, the air cylinder 4 may also be an automatic-resetting single-acting air cylinder, and the piston rod of the air cylinder 4 may be automatically and quickly reset by switching on an air source, which will increase the manufacturing cost.

In order to improve the intelligence of the circuit board clamp of the embodiment, the movable arm 3 is provided with an inductor mounting position 35 for mounting an in-place detection inductor, the inductor can be mounted on the inductor mounting position 35, and when the inductor detects a circuit board to be fixed, the inductor sends an in-place signal, so that the control cylinder 4 drives the movable arm 3 to cooperate with the fixed arm 2 to clamp the circuit board to be fixed so as to fix the circuit board; the inductor installation position 35 used for installing the in-place detection inductor can realize automatic operation, does not need manual operation, is favorable for improving the working efficiency, is suitable for mass production and reduces the production cost, and has high practicability.

Specifically, the sensor mounting position 35 of the present embodiment is a threaded through hole, and then the proximity sensor is mounted in the threaded hole to realize an intelligent detection function, so that the structure is simple and the mounting and adjustment are convenient; of course, in practical application, the setting of the sensor mounting position 35 can be adjusted accordingly according to the specific sensor to be used, so as to meet the actual detection requirement.

In addition, an avoiding groove 34 for avoiding the edge of the piston rod of the cylinder 4 is also arranged at the position adjacent to the tail part of the movable arm 3; the tail portion 32 of the movable arm 3 is always in contact with the middle portion of the piston rod of the cylinder 4 when the piston rod is extended. The edge of the piston rod of the cylinder 4 is prevented from touching the movable arm 3, the movable arm 3 can be protected, and the tail part 32 of the movable arm 3 is ensured to be always abutted against the middle part of the piston rod, so that the clamping action of the movable arm 3 is more stable.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a circuit board clamp which characterized in that, includes main part, fixed arm, digging arm and cylinder, wherein: the tail end of the fixed arm is fixed on the main body part, the middle part of the movable arm is hinged and fixed on the main body part through a pin shaft, and the fixed arm and the movable arm are arranged oppositely; the cylinder is located in the main body part, and the cylinder pushes the tail end of the movable arm through the piston rod, so that the fixed arm and the movable arm are respectively pressed on the surfaces of two sides of a circuit board to be fixed and clamp the circuit board.

2. The circuit board fixture according to claim 1, wherein the circuit board includes a positioning post for positioning, the head end of the fixing arm is provided with a reference portion, the outer side surface of the reference portion is provided with a clamping groove matched with the positioning post, and when the movable arm and the fixing arm clamp the circuit board to be fixed, the fixing arm clamps and positions the positioning post of the circuit board to be fixed in the clamping groove.

3. The circuit board holder according to claim 2, wherein the head end of the movable arm has a clamping portion corresponding to the reference portion, and when the movable arm and the fixed arm clamp the circuit board to be fixed, the reference portion and the clamping portion are respectively attached to the upper surface and the lower surface of the circuit board to be fixed, and the reference portion and the clamping portion are overlapped in an orthographic projection area of the circuit board to be fixed.

4. The circuit board clamp according to claim 3, wherein the clamping portion is pivotally fixed to the head end of the movable arm by a pin, and an end surface of the clamping portion facing the fixed arm forms a first press contact surface on which a first cushion pad made of an elastic material is mounted and fixed.

5. The circuit board holder according to claim 2, wherein the lower portion of the fixing arm protrudes from the bottom surface of the main body portion, and the width of the lower portion of the fixing arm is smaller than the width of the main body portion; the reference part of the fixed arm protrudes towards the movable arm and forms a second compression joint surface, the second compression joint surface is coplanar with or lower than the bottom surface of the main body part, and a second cushion pad made of elastic materials is fixedly installed on the second compression joint surface.

6. The circuit board jig according to claim 5, wherein the card slot is perpendicular to the second crimping surface of the reference portion, and a radial cross section of the card slot is U-shaped.

7. The circuit board clamp according to claim 1 or 5, wherein the main body portion comprises a bottom surface and a top surface which are arranged in parallel, the bottom surface is provided with a strip-shaped groove matched with the width of the fixing arm, and the fixing arm is fixed to the strip-shaped groove through a screw;

8. The circuit board holder according to claim 1, wherein the main body is further coupled with a spring for restoring the movable arm, one edge of the spring abutting against the movable arm.

9. The circuit board clamp of claim 8, wherein the main body portion is provided with a spring slot corresponding to the spring, the spring is mounted in the spring slot, and one edge of the spring abuts against a lower surface between the middle portion and the head end of the movable arm.

10. The circuit board fixture according to claim 1, wherein the movable arm further has an inductor mounting location for mounting an inductor for in-place detection, and when the inductor disposed at the inductor mounting location detects a circuit board to be fixed, the fixed arm and the movable arm press the circuit board;