CN213224667U - Clamp - Google Patents

Abstract

A clamp is disclosed, which comprises a base frame, a slide block and a fixing mechanism. The slide block is arranged in the containing groove of the base frame, grooves with different shapes are formed in the slide block, the fixing mechanism is arranged in a mode of rotating relative to the slide block, and the fixture clamps and fixes workpieces through the fixing mechanism and the grooves in the slide block. The utility model discloses a recess that the shape is different on rotatable fixed establishment and the slider is mutually supported in order to fix the work piece, makes the clamping of work piece simple and convenient more swift.

Description

Clamp

Technical Field

The utility model relates to a process equipment field, concretely relates to anchor clamps.

Background

In manual welding operation, a worker needs to fix a workpiece to be clamped by using a clamp, hold an electric iron with one hand and hold soldering tin with the other hand, and then perform welding operation.

The existing clamp usually uses threads to fasten workpieces to be clamped, and in large-batch operation, the clamp is used for fixing workpieces to be clamped in different shapes, the size of a clamp accommodating cavity and the angle of the clamp need to be adjusted frequently, and particularly for the workpieces to be clamped with large volume difference, the clamp needs to be replaced directly, which is time-consuming and labor-consuming.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a but quick clamping anchor clamps with high compatibility makes the clamping treat the operation of pressing from both sides tight work piece more simple and convenient swift in the manual soldering tin operation.

In a first aspect, an embodiment of the present invention provides a clamp, including:

a base frame having a receiving groove;

the sliding block is detachably arranged in the accommodating groove and is provided with grooves with different sizes; and

a fixing mechanism rotatably provided with respect to the slider;

the clamp is configured to clampingly secure a workpiece between the recess of the slide and the securing mechanism by rotating the securing mechanism and/or flipping the slide.

Further, the jig further includes:

the fixing mechanism support plate is arranged between the base frame and the fixing mechanism and used for bearing the fixing mechanism; and

a first end of the fixing mechanism support rod is fixedly connected with the fixing mechanism support plate, and a second end of the fixing mechanism support rod is movably arranged on the base frame;

wherein the fixing mechanism support rod is configured to be controlled to drive the fixing mechanism carrier plate to displace.

Further, the base frame includes:

the fixing mechanism supporting rod is arranged in the second through hole;

the first end of the fixing mechanism supporting rod extends out of the second through hole and is fixedly connected with the fixing mechanism carrier plate, and the second end of the fixing mechanism supporting rod extends into the second through hole and is connected with the base frame in a mode of moving along the second through hole.

Furthermore, the base frame is provided with a first connecting hole and a second connecting hole which are communicated with the second through hole;

the jig further includes:

the butterfly bolt is movably arranged in the first connecting hole and stops the fixing mechanism supporting rod; and

and the stop screw is arranged in the second connecting hole and limits the supporting rod of the fixing mechanism.

Furthermore, the fixed mechanism bracing piece is provided with a third floating surface and a bulge located below the third floating surface, the stop screw is connected with the third floating surface in a sliding manner, and the bulge is used for limiting the movable range of the fixed mechanism bracing piece relative to the fixed mechanism bracing piece on the third floating surface.

Further, the jig further includes:

a base; and

an adjustment mechanism rotatably connecting the base and the base frame configured to adjust an angle between the base frame and the base.

Furthermore, the base frame is provided with a first through hole communicated with the containing groove;

the jig further includes:

a limiting pin configured to be movably arranged in the first through hole and limit the sliding block;

the spring is arranged in the first through hole and used for resetting the limiting pin; and

and the first limiting part is arranged on the outer side of the first through hole and used for limiting the spring.

Further, the jig includes:

the guide rod is arranged in a gap formed by the groove of the sliding block and the accommodating groove of the base frame and used for guiding the sliding block;

the ball plunger is arranged on the clamping groove of the accommodating groove and is inserted into the positioning hole of the sliding block to limit the sliding block; and

and the second limiting piece is used for axially limiting the guide rod.

Further, the fixed establishment bracing piece is last to have first floating face, the second through-hole is last to have the second floating face, first floating face with the second floating face laminates each other, the fixed establishment bracing piece with the second through-hole passes through first floating face with second floating face sliding connection.

Further, the fixing mechanism includes:

fixing the rod;

the transmission rod is fixedly connected with the fixed rod;

the middle piece is connected with the transmission rod to form a first rotating pair, and is provided with a protruding part which is arranged above the transmission rod and used for limiting the rotational freedom degree of the transmission rod;

the operating piece is connected with the intermediate piece to form a second revolute pair; and

the base is connected with the operating piece to form a third rotating pair, and is connected with the transmission rod to form a fourth rotating pair;

the operating part is configured to be controlled to rotate relative to the base through the third rotating pair, so that the second rotating pair drives the intermediate part to rotate, the intermediate part drives the transmission rod to rotate through the first rotating pair, and the transmission rod drives the fixed rod to rotate relative to the base through the fourth rotating pair.

The utility model discloses a recess that the shape is different on rotatable fixed establishment and the slider is mutually supported in order to fix the work piece, makes the clamping of work piece simple and convenient more swift.

Drawings

The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:

fig. 1 is a schematic structural view of a front surface of a clamp according to an embodiment of the present invention;

fig. 2 is a schematic structural view of the back of the clamp according to the embodiment of the present invention;

fig. 3 is an exploded view of a securing mechanism according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a slider according to an embodiment of the present invention;

fig. 5 is a schematic structural view of a base frame according to an embodiment of the present invention;

fig. 6 is a schematic structural view of a fixing mechanism supporting rod of the embodiment of the present invention

Fig. 7 is a cross-sectional view 1/3 of the base frame and its surrounding components of an embodiment of the invention;

fig. 8 is a cross-sectional view 2/3 of the base frame and its surrounding components of an embodiment of the invention;

fig. 9-11 are mechanical movement diagrams of the securing mechanism of an embodiment of the present invention;

fig. 12 is a schematic structural diagram of an intermediate member according to an embodiment of the present invention;

fig. 13 is a schematic structural diagram of an operating element according to an embodiment of the present invention.

Detailed Description

The present invention will be described below based on examples, but the present invention is not limited to only these examples. In the following detailed description of the present invention, certain specific details are set forth in detail. It will be apparent to those skilled in the art that the present invention may be practiced without these specific details. Well-known methods, procedures, components and circuits have not been described in detail so as not to obscure the present invention.

Further, those of ordinary skill in the art will appreciate that the drawings provided herein are for illustrative purposes and are not necessarily drawn to scale.

Unless the context clearly requires otherwise, throughout the description, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is, what is meant is "including, but not limited to".

In the description of the present invention, it is to be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, the term "plurality" means two or more than two unless otherwise specified.

Fig. 1-13 are schematic views of a clamp according to an embodiment of the present invention. The clamp comprises a sliding block 1, a base frame 2 and a fixing mechanism 3. In which the slider 1 is provided with recesses 11 of different sizes, as shown in figure 4. As shown in fig. 5, the base frame 2 has a receiving groove 21, and the slider 1 is disposed in the receiving groove 21. The fixing mechanism 3 is arranged rotatably with respect to the slider 1.

The clamp is configured such that the workpiece to be clamped is clamped between the recess 11 of the slide 1 and the fixing means 3 by rotating the fixing means 3 and/or flipping the slide 1 over.

That is, the fixing mechanism 3 forms a cavity for accommodating a workpiece to be clamped together with the slider 1, so that the workpiece to be clamped is fixed in the cavity.

Specifically, when a workpiece needs to be clamped, the fixing mechanism 3 is rotated to make the fixing head 311 (a part of the fixing mechanism 3 which is in direct contact with the workpiece to be clamped) far away from the base frame 2, so that the volume of the accommodating cavity is increased to reserve a space for placing the workpiece to be clamped. The slide block 1 is placed in the containing groove 21, the slide block 1 is adjusted to be upward with a proper groove 11 according to the shape and size of the workpiece to be clamped, the workpiece to be clamped is placed on the groove 11 of the slide block 1, the fixing mechanism 3 is rotated to enable the fixing head 311 to contact the workpiece to be clamped, and locking force is further applied (the fixing mechanism 3 is continuously rotated) to fix the workpiece to be clamped together with the groove 11.

As shown in fig. 4, the slider 1 is provided in a cube-like structure having grooves 11 with different sizes on the upper and lower surfaces. The grooves 11 are used for increasing the constraint surfaces of the workpieces to be clamped, namely, for the workpieces to be clamped with different shapes and sizes, the adaptive grooves 11 are used for contacting the corresponding surfaces of the workpieces to be clamped and are matched with the fixing mechanism 3 to clamp and fix the workpieces to be clamped.

In the embodiment, the size of the groove 11a on the upper surface of the sliding block 1 is smaller than that of the groove 11b on the lower surface of the sliding block 1, so as to adapt to workpieces to be clamped with different shapes and sizes.

The groove 11 is not limited to any shape, including but not limited to a trapezoidal groove, a rectangular groove, an elliptical groove, or the like. In this embodiment the grooves 11 are provided as V-grooves, as shown in fig. 4. Therefore, the restraining effect on the workpiece to be clamped is better.

The arrangement of the groove 11 is not limited to the opposite side surface of the slider 1, and it may be arranged on any surface of the slider 1. And the number of the grooves 11 may be one or more, further, the shape of the plurality of grooves 11 may be different. For example, adjacent to one trapezoidal groove 11 is one rectangular groove 11. As long as can realize through 1 recess 11 and the fixed slider 1 and the recess 11 of waiting to press from both sides tight work piece of the cooperation of fixed establishment 3 that make its different surfaces of upset slider, all be applicable to the utility model discloses.

As shown in fig. 3, the fixing mechanism 3 includes a fixing lever 31, a transmission lever 32, an intermediate member 33, an operating member 34, and a base 35. Wherein, the end of the driving lever 32 is provided with a fixing lever coupling hole 321, and the fixing lever 31 is coupled with the driving lever 32 by being inserted into the fixing lever coupling hole 321.

As shown in fig. 1 to 2, both ends of the fixing lever 31 protrude through the fixing lever coupling hole 321. The fixing rod 31 and the transmission rod 32 should be fixed relatively to each other to ensure the binding strength when fixing the workpiece to be clamped.

Preferably, a set screw 312a fastens the fixing lever 31 above the fixing lever coupling hole 321. Below the fixing lever connection hole 321, a set screw 312b fastens the fixing lever 31. The cost of screw fastening is lower.

The end of the fixing rod 31 is provided with a fixing head 311, and the fixing head 311 is used to directly contact and fix a workpiece to be clamped. In the present embodiment, the fixing head 311 is provided in a polygonal shape. The fixing head 311 is not limited to a shape and a size, and any shape and size of the fixing head 311 are applicable to the present invention as long as it can be matched with the slider 1 to clamp and fix the workpiece to be clamped.

The material of the fixing head 311 includes, but is not limited to, metal, alloy, polymer material, or other materials. In an alternative implementation, the fixing head 311 is made of a plastic material, so that the fixing head has certain rigidity and is low in cost. In another alternative implementation, the fixing head 311 is made of elastic material (e.g., rubber), and the prestressing force is added to avoid damaging the surface of the workpiece to be clamped by using rigid material, so as to effectively accommodate the hardness and surface smoothness of the workpiece.

As shown in fig. 3, the driving rod 32 has a first rivet hole 361a, and the intermediate member 33 has a corresponding first rivet 361 b. The transmission member 32 and the intermediate member 33 are riveted by riveting the first rivet 361b into the first rivet hole 361a, and form a first rotation pair, so that the transmission rod 32 and the intermediate member 33 can rotate relatively around the first rivet 361 b.

In the present embodiment, the cross section of the transmission rod 32 is rectangular, and the rectangular cross section enables the rod body of the transmission rod 32 to have higher structural strength and to be easily processed. The first end of the driving member 32 is provided with a fixing rod coupling hole 321 penetrating in the width direction. The second end of the transmission member 32 is provided with a fourth staking hole 364a and a first staking hole 361a which penetrate through in the thickness direction in this order.

The shape of the fixing rod coupling hole 321 may be any shape, and in the present embodiment, the shape of the fixing rod coupling hole 321 is set to be a circle, and the cross-sectional shape of the fixing rod 31 is a circle corresponding thereto, so that the fixing rod 31 and the transmission rod 32 may be fastened using a screw.

The drive link 32 is made of a rigid material including, but not limited to, plastic, metal, or alloy.

As shown in fig. 3, the intermediate member 33 has a second rivet hole 362a, and the operating member 34 has a corresponding second rivet 362 b. The intermediate member 33 and the operation member 34 are riveted by riveting the second rivet 362b into the second rivet hole 362a, and a second rotation pair is formed, so that the intermediate member 33 and the operation member 34 can rotate relatively around the second rivet 362 b.

In the present embodiment, the intermediate member 33 includes a first intermediate member 331, a second intermediate member 332, and a protruding portion 333, as shown in fig. 11. The first intermediate member 331 and the second intermediate member 332 are disposed opposite to each other, and the first intermediate member 331 and the second intermediate member 332 are fixedly connected to the protruding portion 333.

The first and second intermediate members 331 and 332 have first ends opposite to each other with a second rivet hole 362a and second ends opposite to each other with a first rivet 361 b.

The first and second intermediate members 331 and 332 are disposed at both sides of the driving lever 32, and the first and second intermediate members 331 and 332 are coupled to the driving lever 32 by riveting the first rivet 361b into the first rivet hole 361a of the driving lever 32.

The protrusion 333 is disposed above the transmission lever 32 near the first end of the first intermediate member 331 and the first end of the second intermediate member 332, is fixedly connected to the first intermediate member 331 and the second intermediate member 332, and is configured to limit the rotational degree of freedom of the transmission lever 32.

The connection between the first intermediate member 331 and the protruding portion 333 and the connection between the second intermediate member 332 and the protruding portion 333 may be welding, gluing, integral molding or other rigid connection. Preferably, the steel plate is integrally formed by cutting or pressing with a machine tool, and has higher structural strength.

The intermediate piece 33 is made of a rigid material including, but not limited to, plastic, metal or alloy.

The operating member 34 has a third rivet hole 363a, and the base 35 has a corresponding third rivet 363 b. The operation member 33 is riveted with the base 35 by riveting the third rivet 363b into the third rivet hole 363a, and forms a third rotation pair, so that the operation member 34 and the base 35 can rotate relatively around the third rivet 363 b.

In the present embodiment, the operating member 34 includes a first operating member 341, a second operating member 342, and a third operating member 343, as shown in fig. 13. The first operating member 341 and the second operating member 342 are disposed opposite to each other, and the first operating member 341 and the second operating member 342 are fixedly connected to the third operating member 343.

The first operating member 341 and the second operating member 342 have first ends opposite to each other provided with a second rivet 362b, and second ends opposite to each other provided with a third rivet 363 b.

The first and second operation members 341 and 342 are provided on both sides of the transmission lever 32 and the intermediate member 33, and the first and second operation members 341 and 342 are connected to the intermediate member 33 by riveting the second rivet 362b into the second rivet hole 362a, and are connected to the transmission lever 32 by riveting the third rivet 363b into the third rivet hole 363 a.

The third operating member 343 is disposed above the transmission rod 32 and the intermediate member 33 near the first ends of the first operating member 341 and the second operating member 342, and is fixedly connected to the first operating member 341 and the second operating member 342 to provide initial power for the rotation of the fixing mechanism 3. For example, the third operating member 343 is rotated by hand to rotate the fixing mechanism 3.

The first operating member 341, the second operating member 342 and the third operating member 343 can be connected by welding, gluing, integral molding or other rigid connection methods. Preferably, the steel plate is integrally formed by cutting or pressing with a machine tool, and has higher structural strength.

The operating member 34 is made of a rigid material including, but not limited to, plastic, metal, or alloy.

The driving shaft 32 further has a fourth rivet hole 364a, and the base 35 has a corresponding fourth rivet 364 b. The driving rod 32 and the base 35 are driven to rotate relative to each other about the fourth rivet 364b by riveting the fourth rivet 364b into the fourth rivet hole 364a and forming a fourth rotation pair.

The base 35 is positioned above the base frame 2 and fixed relative to the base frame 2. The base 5 is made of a rigid material including, but not limited to, plastic, metal or alloy.

In the present embodiment, the tangential force (with respect to the second rivet 362 b) is applied to the third operating member 343, and the operating member 34 is provided with a rotational moment that rotates the operating member 34 with respect to the intermediate member 33 about the second rivet 362b, since the first operating member 341 and the second operating member 342 are connected to the intermediate member 33 by the second rivet 362 b. This rotation causes the operating member 34 to apply a torque in the same direction to the intermediate member 33 via the rivet 362 b. The moment arm of the moment applied to the intermediate member 33 is a connecting line between the first rivet 361b and the second rivet 362b, and since the intermediate member 33 cannot be displaced relative to the driving rod 32 by being riveted thereto, the intermediate member 33 will rotate around the first rivet 361 b.

Specifically, in the schematic mechanical diagram, the third operating member 343 is rotated counterclockwise by an operator facing the clamp shown in fig. 1. As shown in fig. 9, the operating member 34 is subjected to a moment M1, wherein the moment M1 is along the circumferential direction of a circle with the center of the third rivet 363b and the radius of the line connecting the second rivet 362b and the third rivet 363 b. The intermediate piece 33, which is connected to it by means of the second rivet 362b, is subjected to a force F12, said force F12 being tangential to the above-mentioned circumference. The intermediate piece 33 will have a tendency to rotate in the direction of the moment M1 due to the action of the force F12. That is, at this moment, the intermediate member 33 has a tendency to rotate on its own axis (M1 direction) with respect to the first rivet 361 b.

The intermediate member 33 rotates about the first rivet 361b, and simultaneously, the driving lever 32 rotates about the fourth rivet 364b relative to the base 35. Since the fixing rod 31 is fixedly connected to the transmission rod 32, the transmission rod 32 drives the fixing rod 31 to move away from the base frame 2.

Specifically, explained in a mechanical diagram, as shown in fig. 10, since the radius R1 at which the M1 moment is located is larger than the radius R2 at which the M2 moment is located, the intermediate member 33 and the transmission lever 32 are connected by the first rivet 361 b. Therefore, when the intermediate member 33 starts to rotate from the above-described tendency of movement, the direction thereof is not in the direction of the moment M1 but in the direction of the moment M2. The moment M2 is along the circumferential direction of a circle having a radius defined by the line connecting the first rivet 361b and the second rivet 362 b.

According to the law of conservation of angular momentum of the system (conservation of total angular momentum of the system without external moment), as shown in fig. 10, the system composed of the intermediate member 33 and the operation member 34 receives external moment M1, and the resultant moment of the system is M1 and M2. Therefore, the system is also subjected to a moment M3 of the same magnitude and opposite direction as the moment M2. That is, the moment M3 is opposite to the moment M2 in the circumferential direction of a circle having a radius at the center of the first rivet 361b and the line connecting the first rivet 361b and the second rivet 362 b.

Since the intermediate member 33 and the transmission lever 32 are connected by the first rivet 361b, the moment M2 of the intermediate member 33 is applied to the transmission lever 32, and the transmission lever 32 rotates about the first rivet 361 b. Specifically, as shown in fig. 11, with the transmission lever 32, the rotation center thereof (the first rivet 361b) is located at a certain position in the length direction (i.e., the rotation center non-end point). Therefore, according to the law of conservation of angular momentum, the first end of the driving rod 32 has a moment M4 with respect to the first rivet 361 b. The moment M4 is along the circumferential direction of a circle having a radius defined by the line connecting the first rivet 361b and the fourth rivet 364 b. The second end of the drive link 32 has a moment M5 with respect to the first rivet 361 b. The moment M5 is along the circumferential direction of a circle having a radius on the first rivet 361b as the center and on the connection line between the first rivet 361b and the center of gravity of the contact surface of the transmission lever 32 and the fixed lever 31. The fixing lever 31 is located at a second end of the driving lever 32, that is, the fixing lever 31 can rotate with respect to the fourth rivet 364 b.

Since the base 35 is fixed with respect to the base frame 2, the slider 1 is also fixed with respect to the base frame 2. Accordingly, the fixing lever 31 rotates with respect to the fourth rotation pair, that is, the fixing lever 31 rotates with respect to the base 35, the base frame 2, and the slider 1.

Therefore, a containing cavity is formed between the fixing mechanism 3 and the overturning slide block 1 by rotating the fixing mechanism 3 and/or overturning the slide block 1, and the containing cavities with different volumes are formed by adjusting the rotating angle of the fixing mechanism 3 and/or different grooves 11 of the slide block 1 to contain workpieces to be clamped with different volumes.

The fixture of this embodiment further includes a fixing mechanism carrier 301 and a fixing mechanism supporting rod 302, as shown in fig. 1 and fig. 2. The fixing mechanism carrier plate 301 is disposed between the base frame 2 and the fixing mechanism 3, and is used for carrying the fixing mechanism 3.

The base frame 2 is fixedly connected with the base 35. Preferably, the base 35 has a base fixing hole 37 thereon, as shown in fig. 3. A hole-like structure corresponding to the base fixing hole 37 may be provided on the fixing mechanism carrier plate 301, and the base frame 2 may be connected to the base 35 by screwing or driving a rivet, so as to facilitate subsequent detachment and maintenance.

The first end of the fixing mechanism supporting rod 302 is fixedly connected with the fixing mechanism carrier plate 301, and the second end of the fixing mechanism supporting rod 302 is movably arranged on the base frame 2. The fixing mechanism support rod 302 is configured to be controlled to drive the fixing mechanism carrier plate 301 to move, so as to adjust the height of the fixing mechanism 3 connected with the fixing mechanism carrier plate 301 relative to the base frame 2, and further adjust the size of a cavity formed by the fixing mechanism 3 and the slider 1, so as to adapt to workpieces to be clamped with different shapes and sizes.

Specifically, a second through hole 202 penetrating in the thickness direction may be provided on the base frame 2, as shown in fig. 5. The fixing mechanism support rod 302 is disposed in the second through hole 202.

Wherein, the first end of the fixing mechanism supporting rod 302 extends out of the second through hole 202 to be fixedly connected with the fixing mechanism carrier plate 301. The second end of the fixing mechanism supporting rod 302 extends into the second through hole 202 and is connected with the base frame 2 in a manner of moving along the second through hole 202, that is, the fixing mechanism supporting rod 302 and the second through hole 202 form a clearance fit. Preferably, the radial dimension of the fixing mechanism support rod 302 is slightly smaller than the radial dimension of the second through hole 202, so that the fixing mechanism support rod 302 can move smoothly in the second through hole 202.

The fixing mechanism support rod 302 and the fixing mechanism carrier plate 301 may be connected by welding, gluing or other rigid connection methods. In the embodiment, the countersunk holes 324 are formed in the fixing mechanism carrier plate 301, and as shown in fig. 7, countersunk screws are screwed into the countersunk holes 324 or driven into the countersunk holes to fixedly connect the fixing mechanism support rod 302 and the fixing mechanism carrier plate 301, so that the connection is more stable.

The cross section of the fixing mechanism support rod 302 is not limited to any shape, and the second through hole 202 is provided in a shape corresponding to the fixing mechanism support rod 302.

In the present embodiment, the fixing mechanism support rod 302 is provided as a cylindrical rod, and the cross-sectional outer profile of the second through hole 202 is a circular shape corresponding thereto, thereby facilitating the processing.

The fixing mechanism support plate 301 and the fixing mechanism support rod 302 are made of rigid materials. E.g., an alloy, has both hardness and smoothness.

The clamp of the present embodiment further includes a wing bolt 28 and a set screw 29. The butterfly bolt 28 is used for stopping the fixing mechanism supporting rod 302, and the stop screw 29 is used for limiting the fixing mechanism supporting rod 302.

Specifically, as shown in fig. 2 and 5, the base frame 2 has a first connection hole 203 and a second connection hole 204 connected to the second through hole 202. The thumb screw 28 is movably disposed in the first coupling hole 203, and the set screw 29 is movably disposed in the second coupling hole 204.

Preferably, the inner surface of the first connection hole 203 and the outer surface of the thumb screw 28 are threaded to be engaged with each other, so that the thumb screw 28 can be screwed into the first connection hole 203 in a threaded manner. Thereby, subsequent disassembly and maintenance are facilitated.

When the thumb bolt 28 is tightened, the thumb bolt 28 locks the fixing mechanism support rod 302 in the second through hole 202, so that the fixing mechanism support rod 302 cannot move along the second through hole 202.

When the wing bolt 28 is loosened, the fixing mechanism support rod 302 can move along the second through hole 202 to drive the fixing mechanism 3 to move so as to adjust the size of the cavity.

Preferably, a third floating surface 3023 is formed on the surface of the fixing member support bar 302, as shown in fig. 6. Correspondingly, the third floating surface 3023 has a protrusion 3023a below. Set screw 29 is located above boss 3023 a.

The set screw 29 is screwed into the second connecting hole 204 and is close to (at a certain distance but very close to) or in contact with the third floating surface 3023 of the fixing member support bar 302. The contact is a light contact, i.e., the set screw 29 does not significantly impede the movement of the fixture support bar 302.

The maximum distance between the protrusion 3023a and the third floating surface 3023 (the maximum distance between any point on the protrusion 3023a and the third floating surface 3023) is greater than the minimum distance between the set screw 29 and the third floating surface 3023 (the distance between the end of the set screw 29 and the third floating surface 3023). Therefore, when the fixing member support lever 302 moves in the second through hole 202, if the fixing mechanism support lever 302 moves upward until the set screw 29 comes into contact with the projection 3023a, the fixing mechanism support lever 302 cannot move upward any more.

That is, the set screw 29 prevents the fixing mechanism support rod 302 from sliding out of the second through hole 202 by engaging with the protrusion 3023 a.

Preferably, a plurality of set screws may be used to be sequentially driven into the second connecting hole 204 to prevent the set screw 29 from slipping out.

The clamp according to this embodiment further includes a limiting pin 22, a spring 23, and a first limiting member 24. The limit pin 22 is used for limiting the slide block 1. The spring 23 is used to return the stopper pin 22. The first stopper 24 is used for stopping the spring 23.

Specifically, as shown in fig. 5, the base frame 2 has a first through hole 201 connected to the receiving groove 21. The stopper pin 22 is movably disposed in the first through hole 201. Wherein, two ends of the limit pin 22 extend out of the first through hole 201.

The spring 23 is arranged in the first through hole 201, and the limiting pin 22 can be controlled to cause the spring 23 to deform. When the external force is removed from the stop pin 22, the spring 23 will return to the free state from the deformed state, and further drive the stop pin 22 to move, so that the stop pin 22 is reset.

The first limiting member 24 is disposed outside the first through hole 201, and a first end of the first limiting member 24 (the first end of the first limiting member 24 faces the first through hole 201, and a second end of the first limiting member 24 faces away from the first through hole 201) is fixedly connected to a first end of the spring 23 (the spring 23 is fixed at the first end and moves at the second end), so that the spring 23 is fixed in the first through hole 201.

When the sliding block 1 needs to be placed in the accommodating groove 21, the limiting pin 22 can be pulled outwards, so that the sliding block 1 can be placed in the accommodating groove 21. At this time, the spring 23 is in a deformed state.

When the sliding block 1 is already placed in the accommodating groove 21, the limit pin 22 is loosened, and the limit pin 22 is fixed in contact with the sliding block 1 under the action of the spring 23, so that the sliding block 1 is prevented from sliding in the accommodating groove 21.

In this embodiment, the first limiting member 24 is a baffle, and the baffle can be fixedly connected to the base frame 2 at the outer side of the first through hole 201 by welding, gluing or other methods. The material of the first limiting member 24 is not limited to any rigid material. Preferably, plastic baffles can be used, at a lower cost.

The fixture of the present embodiment further includes a guide rod 25, a ball plunger 26, and a second stopper 27. The guide bar 25 is used to guide the slider 1. The ball plunger 26 is used for limiting the slide block 1. The second stopper 27 is used to restrict the guide rod 25.

Specifically, as shown in fig. 5, the accommodating groove 21 has a slide rail 251 along the width direction, and the guide bar 25 is disposed in the slide rail 251.

When the slider 1 is placed in the accommodating groove 21, the guide bar 25 provided in the slide rail 251 in the width direction will make the slider 1 unable to slide in other directions.

The length of the guide bar 25 is the same as that of the slide rail 251. The second limiting member 27 is used for fixing the guide rod 25 so that it cannot slide along the slide rail 251, and limiting the slider 1 in the accommodating groove 21. The second position-limiting member 27 may be a stop plate, a stop rod or other structure that can prevent the guide rod 25 from sliding.

Preferably, the second limiting member 27 is provided as a screw. The base frame 2 is provided with a threaded hole 271, and the guide rod 25 cannot slide on the slide rail 251 by screwing a screw of the second stopper 27 into the threaded hole 271, as shown in fig. 1 and 2.

As shown in fig. 4 and 5, the slider 1 further has a positioning hole 12, and correspondingly, the accommodating groove 21 further has a locking groove 261. The ball plunger 26 is disposed on the slot 261, and the first end of the ball plunger 26 is inserted into the positioning hole 12, so that the slider 1 and the base frame 2 do not slide relatively.

As shown in fig. 5 and 6, the fixing mechanism support rod 302 further has a first floating surface 3021, and correspondingly, the second through hole 202 has a second floating surface 3022. The first floating surface 3021 and the second floating surface 3022 are provided as planes.

The fixing mechanism support rod 302 is configured such that the first floating surface 3021 abuts the second floating surface 3022 when it is placed in the second through hole 202. Since the surfaces of the fixing mechanism support lever 302 and the second through hole 202 other than the first floating surface 3021 and the second floating surface 3022 are curved surfaces, the fixing mechanism support lever 302 cannot rotate in the circumferential direction.

The clamp according to this embodiment further comprises a base 5 and an adjusting mechanism 4, as shown in fig. 1 and 2. The adjustment mechanism 4 rotatably connects the base 5 and the base frame 2, and is configured to adjust an angle between the base frame 2 and the base 5.

Preferably, the adjustment mechanism 4 is provided as a hinge. The hinge enables the clamp to have an angle adjusting space relative to the base 5 so as to meet the requirements of different operators on different operation angles.

The base 5 is used for supporting and fixing the clamp. The material used for the base 5 is a rigid material to increase rigidity.

The adjusting mechanism 4 is connected with the base 5 and the base frame 2 by welding, gluing or other rigid connection methods.

The clamp described in this embodiment forms a cavity for fixing a workpiece to be clamped by rotating the fixing mechanism and/or turning the slider. And for workpieces to be clamped with different shapes and sizes, re-clamping can be quickly realized. For different operators, the angle of the workpiece to be clamped can be changed through the adjusting mechanism so as to adapt to the personal habits of the operators. Simple structure and simple operation.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims (10)

1. A clamp, comprising:

a base frame (2) having a receiving groove (21);

the sliding block (1) is detachably arranged in the accommodating groove (21), and the sliding block (1) is provided with grooves (11) with different sizes; and

a fixing mechanism (3) which is rotatably provided with respect to the slider (1);

the clamp is configured to clamp a workpiece between the recess (11) of the slide (1) and the fixing means (3) by rotating the fixing means (3) and/or flipping the slide (1).

2. The clamp of claim 1, further comprising:

a fixing mechanism carrier plate (301) arranged between the base frame (2) and the fixing mechanism (3) and used for carrying the fixing mechanism (3); and

a fixing mechanism support rod (302), wherein a first end of the fixing mechanism support rod (302) is fixedly connected with the fixing mechanism support plate (301), and a second end of the fixing mechanism support rod (302) is movably arranged on the base frame (2);

wherein the fixing mechanism support rod (302) is configured to be controlled to drive the fixing mechanism carrier plate (301) to displace.

3. The clamp according to claim 2, characterized in that said base frame (2) comprises:

a second through hole (202), the fixing mechanism support rod (302) being disposed in the second through hole (202);

the first end of the fixing mechanism supporting rod (302) extends out of the second through hole (202) to be fixedly connected with the fixing mechanism carrier plate (301), and the second end of the fixing mechanism supporting rod (302) extends into the second through hole (202) and is connected with the base frame (2) in a mode of moving along the second through hole (202).

4. The clamp according to claim 3, characterized in that the base frame (2) has a first connection hole (203) and a second connection hole (204) connected to the second through hole (202);

the jig further includes:

a thumb screw (28) configured to be movably disposed in the first connection hole (203) to stop the fixing mechanism support rod (302); and

and the stop screw (29) is arranged in the second connecting hole (204) and limits the fixing mechanism supporting rod (302).

5. The clamp according to claim 4, characterized in that the fixing mechanism support rod (302) is provided with a third floating surface (3023) and a protrusion (3023a) positioned below the third floating surface (3023), the set screw (29) is slidably connected with the third floating surface (3023), and the protrusion (3023a) is used for limiting the movable range of the fixing mechanism support rod (302) on the third floating surface (3023) relative to the fixing mechanism support rod (302).

6. The clamp of claim 1, further comprising:

a base (5); and

an adjustment mechanism (4) rotatably connecting the base (5) and the base frame (2) configured to adjust an angle between the base frame (2) and the base (5).

7. The clamp according to claim 1, characterized in that said base frame (2) has a first through hole (201) communicating with the containing slot (21);

the jig further includes:

a limiting pin (22) which is movably arranged in the first through hole (201) and limits the sliding block (1);

a spring (23) disposed in the first through hole (201) for returning the stopper pin (22); and

the first limiting piece (24) is arranged on the outer side of the first through hole (201) and used for limiting the spring (23).

8. The clamp of claim 1, wherein the clamp comprises:

the guide rod (25) is arranged in a gap formed by the groove (11) of the sliding block (1) and the containing groove (21) of the base frame (2) and used for guiding the sliding block (1);

the ball plunger (26) is arranged on the clamping groove (261) of the accommodating groove (21) and is inserted into the positioning hole (12) of the sliding block (1) to limit the sliding block (1); and

and a second stopper (27) for axially stopping the guide rod (25).

9. The clamp according to claim 3, wherein the fixing mechanism support rod (302) is provided with a first floating surface (3021), the second through hole (202) is provided with a second floating surface (3022), the first floating surface (3021) and the second floating surface (3022) are attached to each other, and the fixing mechanism support rod (302) and the second through hole (202) are slidably connected through the first floating surface (3021) and the second floating surface (3022).

10. The clamp according to claim 1, characterized in that said fixing means (3) comprise:

a fixing rod (31);

the transmission rod (32) is fixedly connected with the fixed rod (31);

the middle piece (33) is connected with the transmission rod (32) to form a first rotating pair, a protruding part (333) is arranged on the middle piece (33), and the protruding part (333) is arranged above the transmission rod (32) and used for limiting the rotating freedom degree of the transmission rod (32);

an operating member (34) connected to the intermediate member (33) to form a second revolute pair; and

the base (35) is connected with the operating piece (34) to form a third rotating pair, and is connected with the transmission rod (32) to form a fourth rotating pair;

the operating part (34) is configured to be controlled to rotate relative to the base (35) through the third revolute pair, and then the intermediate part (33) is driven to rotate through the second revolute pair, so that the intermediate part (33) drives the transmission rod (32) to rotate through the first revolute pair, and then the transmission rod (32) drives the fixed rod (31) to rotate relative to the base (35) through the fourth revolute pair.

Images