A self-locking clamping device

Abstract

The present invention discloses a self-locking clamping device, which relates to the field of clamping tooling technology. The self-locking clamping device includes a base, a first clamping plate, a boss, a second clamping plate, an elastic driving element, a sliding control device and a locking mechanism; the first clamping plate is arranged at one end of the base; the boss is arranged at the other end of the base; the second clamping plate is slidably arranged between the first clamping plate and the boss; the elastic driving element is clamped between the boss and the second clamping plate; the sliding control device is arranged on the boss and can control the second clamping plate to overcome the elastic force of the elastic driving element and move toward the boss; the locking mechanism is arranged on the boss and can lock the sliding control device. When the locking mechanism locks the sliding control device, the second clamping plate remains stationary relative to the first clamping plate. The present invention uses the driving matching relationship between the components to ensure that the clamping device does not use too much force when clamping the workpiece through the elastic driving element, so that the workpiece will no longer be clamped on the surface.

Description

Technical Field

[0001] The invention belongs to the technical field of clamping tools, and in particular relates to a self-locking clamping device. Background Art

[0002] During the production process, when processing workpieces made of PVC (Polyvinyl chloride) materials, they need to be clamped before processing. However, since PVC materials are relatively soft, during the processing process, when using clamping devices to clamp workpieces made of PVC materials, it is easy to cause scratches on the workpiece surface due to excessive force. Summary of the invention

[0003] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a self-locking clamping device to solve the problem in the prior art that workpieces made of PVC material are easily scratched on the surface of the workpiece due to excessive force when being clamped manually.

[0004] To achieve this object, the present invention adopts the following technical solutions:

[0005] A self-locking clamping device, comprising:

[0006] Pedestal;

[0007] A first clamping plate, which is arranged at one end of the base;

[0008] a boss, which is arranged at the other end of the base;

[0009] a second clamping plate slidably disposed between the first clamping plate and the boss and capable of driving the second clamping plate away from the boss;

[0010] an elastic driving element, which is sandwiched between the boss and the second clamping plate;

[0011] a sliding control device, which is disposed on the boss and is capable of controlling the second clamping plate to overcome the elastic force of the elastic driving element and move toward the boss;

[0012] The locking mechanism is arranged on the boss and can lock the sliding control device. When the locking mechanism locks the sliding control device, the second clamping plate remains stationary relative to the first clamping plate.

[0013] As a preferred scheme of the above-mentioned self-locking clamping device, the sliding control device includes a first button, a first inclined block, a second inclined block, a connecting block and a driving block connected in sequence, one end of the first button passes through the upper surface of the boss, and the other end is connected to the end face of the first inclined block, the first inclined block is longitudinally slidably arranged inside the boss, and the lower surface is an inclined surface, the inclined surface of the first inclined block contacts and cooperates with the inclined surface of the second inclined block, one end of the second inclined block away from the first inclined block passes through the side of the boss and is connected to one end of the connecting block, the other end of the connecting block is connected to the driving block, the driving block is parallel to the longitudinal direction of the second inclined block, and the end of the driving block away from the connecting block is connected to the second clamping plate.

[0014] As a preferred solution of the above-mentioned self-locking clamping device, a first slide groove, a second slide groove, a third slide groove and a fourth slide groove are arranged on the boss, the first button is slidably matched with the first slide groove, the first inclined block is slidably matched with the second slide groove, the second inclined block is slidably matched with the third slide groove, and the driving block is slidably matched with the fourth slide groove.

[0015] As a preferred solution of the above-mentioned self-locking clamping device, a step surface is formed between the first sliding groove and the second sliding groove, and the first inclined block can be abutted against the step surface.

[0016] As a preferred solution of the above-mentioned self-locking clamping device, the locking mechanism includes:

[0017] a groove disposed on a side wall of the driving block;

[0018] A locking block, which is arranged on one side of the driving block where the groove is arranged, and can reciprocate in a direction perpendicular to the length direction of the driving block, and can be locked into the groove when aligned with the groove;

[0019] A locking spring connected below the locking block;

[0020] The second button is arranged above the locking block, and one end of the second button extends out of the upper surface of the boss.

[0021] As a preferred solution of the above-mentioned self-locking clamping device, a fifth slide groove and a sixth slide groove are provided in the boss, the second button is slidably matched with the fifth slide groove, and the locking block is slidably matched with the sixth slide groove.

[0022] As a preferred solution of the above-mentioned self-locking clamping device, a step surface is formed between the fifth slide groove and the sixth slide groove, and the locking block can abut against the step surface. When the locking block abuts against the step surface, the locking block is stuck in the groove.

[0023] As a preferred solution of the above-mentioned self-locking clamping device, the groove is a vertically arranged through groove.

[0024] As a preferred solution of the above self-locking clamping device, two parallel guide rods are connected between the boss and the first clamping plate, and the second clamping plate is passed through the two guide rods and can move along the two guide rods.

[0025] As a preferred solution of the above-mentioned self-locking clamping device, the elastic driving element is a compression spring, and the number of the compression springs is two, which are respectively penetrated on the two guide rods.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] The present invention provides a self-locking clamping device, which can ensure that the clamping device does not use too much force when clamping a workpiece through an elastic driving element through a driving matching relationship between components, so that the workpiece will not be clamped on the surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the self-locking clamping device of the present invention;

[0029] Figure 2 is a partial structural schematic diagram of the self-locking clamping device of the present invention (the base and boss are not shown);

[0030] Figure 3 The present invention Figure 1 AA section view when the middle drive block is in the locked state;

[0031] Figure 4 The present invention Figure 1 Cross-sectional view along BB direction when the middle drive block is in the unlocked state;

[0032] Figure 5 It is a schematic diagram of the assembly structure of the driving block in the locked state in the present invention;

[0033] Figure 6 It is a schematic diagram of the assembly structure of the driving block in the non-locking state of the present invention;

[0034] Figure 7 The present invention Figure 1 Mid-CC section view.

[0035] in:

[0036] 1 Base 2 First splint

[0037] 3 Boss 4 Second clamping plate

[0038] 5 Guide rod 6 Compression spring

[0039] 7 First button 8 Second button

[0040] 9 Driver block 10 Connection block

[0041] 11 Second inclined block 12 First inclined block

[0042] 13 Locking block 14 Locking spring

[0043] 15 grooves. DETAILED DESCRIPTION

[0044] The self-locking clamping device of the present invention is described in detail below in conjunction with the accompanying drawings and embodiments of the specification.

[0045] like Figure 1-7 As shown, this embodiment provides a self-locking clamping device, which includes a base 1, a first clamping plate 2, a boss 3, a second clamping plate 4, an elastic driving element, a sliding control device and a locking mechanism.

[0046] The first clamping plate 2 is arranged at one end of the base 1, and the boss 3 is arranged at the other end of the base 1. In this embodiment, the base 1, the first clamping plate 2 and the boss 3 are integrally formed. In other embodiments, the base 1, the first clamping plate 2 and the boss 3 can be arranged separately, and the first clamping plate 2 and the boss 3 can be connected to the base 1 by welding or other fixing methods.

[0047] The second clamping plate 4 is located on the base 1 and is slidably disposed between the first clamping plate 2 and the boss 3. In this embodiment, the second clamping plate 4 and the first clamping plate 2 clamp the workpiece.

[0048] An elastic driving element is sandwiched between the boss 3 and the second clamping plate 4. The elastic driving element can drive the second clamping plate 4 away from the boss 3, thereby clamping the workpiece.

[0049] The sliding control device is arranged on the boss 3, and can control the second clamping plate 4 to overcome the elastic force of the elastic driving element and move toward the boss 3. The sliding control device includes a first button 7, a first inclined block 12, a second inclined block 11, a connecting block 10 and a driving block 9 connected in sequence, one end of the first button 7 passes through the upper surface of the boss 3, and the other end is connected to the end surface of the first inclined block 12, the first inclined block 12 is longitudinally slidably arranged inside the boss 3, and the lower surface is an inclined surface, the inclined surface of the first inclined block 12 is in contact with the inclined surface of the second inclined block 11, the end of the second inclined block 11 away from the first inclined block 12 passes through the side of the boss 3 and is connected to one end of the connecting block 10, the other end of the connecting block 10 is connected to the driving block 9, the driving block 9 is parallel to the longitudinal direction of the second inclined block 11, and the end of the driving block 9 away from the connecting block 10 is connected to the second clamping plate 4. When the first button 7 is pressed downward, the first inclined block 12 moves downward and drives the second inclined block 11 to move away from the first clamping plate 2. The driving block 9 is driven by the connecting block 10 to move together with the second inclined block 11 in the direction away from the first clamping plate 2, thereby driving the second clamping plate 4 to move toward the boss 3. When it is necessary to take out the workpiece between the first clamping plate 2 and the second clamping plate 4, the first button 7 can be pressed to move the second clamping plate 4 away from the first clamping plate 2, so that the workpiece can be taken out.

[0050] The locking mechanism is arranged on the boss 3 and can lock the sliding control device. When the locking mechanism locks the sliding control device, the second clamping plate 4 remains stationary relative to the first clamping plate 2. The locking mechanism includes a groove 15, a locking block 13, a locking spring 14 and a second button 8. Among them, the groove 15 is arranged on the side wall of the driving block 9. The locking block 13 is arranged on the side of the driving block 9 where the groove 15 is arranged, and can reciprocate in a direction perpendicular to the length direction of the driving block 9, and can be inserted into the groove 15 when aligned with the groove 15. The locking spring 14 is connected below the locking block 13, and the second button 8 is arranged above the locking block 13, and one end thereof extends out of the upper surface of the boss 3. When the second button 8 is pressed by an external force, the locking block 13 moves downward to compress the locking spring 14. After the external force is removed, the locking block 13 moves upward under the action of the locking spring 14. When the locking block 13 moves up and down, it can be inserted into or out of the groove 15. When the locking block 13 is inserted into the groove 15, the driving block 9 is restricted in the length direction by the locking block 13 and cannot move, so that the second clamping plate 4 and the first clamping plate 2 can be kept in a clamped state on the workpiece. When the locking block 13 is out of the groove 15, the driving block 9 can move in the length direction, so that the second clamping plate 4 can be driven to move closer to or away from the first clamping plate 2.

[0051] Corresponding to the above-mentioned sliding control device, the boss 3 is provided with a first slide groove, a second slide groove, a third slide groove and a fourth slide groove. The first button 7 is slidably matched with the first slide groove, the first inclined block 12 is slidably matched with the second slide groove, the second inclined block 11 is slidably matched with the third slide groove, and the driving block 9 is slidably matched with the fourth slide groove. A step surface is formed between the first slide groove and the second slide groove, and the first inclined block 12 can be abutted against the step surface so as not to fall off the upper surface of the boss 3.

[0052] Corresponding to the above-mentioned locking mechanism, the boss 3 is provided with a fifth slide groove and a sixth slide groove, the second button 8 is slidably matched with the fifth slide groove, and the locking block 13 is slidably matched with the sixth slide groove. A step surface is formed between the fifth slide groove and the sixth slide groove, and the locking block 13 can abut against the step surface. When the locking block 13 abuts against the step surface, the locking block 13 is inserted into the groove 15, locking the drive block 9, and the drive block 9 cannot realize axial movement, and the locking block 13 is restricted from escaping from the boss 3 by the step surface.

[0053] In this embodiment, the groove 15 is a vertical through groove. That is, the groove 15 has no side wall in the direction perpendicular to the axial direction of the driving block 9, and has two opposite side walls in the length direction of the driving block 9. When the locking block 13 is in the groove 15, it can limit the movement of the driving block 9 in the length direction, that is, limit the movement of the second clamping plate 4. When the second button 8 is pressed down, the locking block 13 is out of the groove 15, and the movement of the driving block 9 in the length direction is not restricted.

[0054] In this embodiment, two parallel guide rods 5 are connected between the boss 3 and the first clamping plate 2 , and the second clamping plate 4 is passed through the two guide rods 5 and can move along the two guide rods 5 , so that the movement of the second clamping plate 4 is stable.

[0055] In this embodiment, the elastic driving element is a compression spring 6, and there are two compression springs 6, which are respectively arranged on the two guide rods 5. In other embodiments, the elastic driving element can also be other elastic members that can drive the second clamping plate 4.

[0056] The method of using the self-locking clamping device of the present invention:

[0057] (1) When the workpiece needs to be clamped, manually press the second button 8.

[0058] (2) When the second button 8 moves downward for a certain distance, the locking block 13 is disengaged from the through groove, and the driving block 9 is unlocked. Specifically, the second button 8 moves downward to compress the locking spring 14; the second button 8 continues to move downward, the locking block 13 leaves the groove position, and the driving block 9 can move.

[0059] (3) After the driving block 9 is unlocked, the compression spring 6 begins to stretch and pushes the second clamping plate 4 to move toward the first clamping plate 2.

[0060] (4) The driving block 9 drives the second inclined block 11 to move in the same direction through the connecting block 10. The second inclined block 11 pushes the first inclined block 12 to move upward, thereby popping up the first button 7.

[0061] (5) When the second clamping plate 4 clamps the workpiece, the first button 7 presses against the step surface between the first slide groove and the second slide groove. The second clamping plate 4 and the first clamping plate 2 work together to clamp the workpiece. Since the driving elastic element has elastic force, when it pushes the second clamping plate 4 to clamp the workpiece, the clamping force between the second clamping plate 4 and the first clamping plate 1 will not be too large, and it has a buffering function when clamping the workpiece, so it will not cause damage to the workpiece surface. After clamping the workpiece, the workpiece can be processed and other operations can be performed on the workpiece.

[0062] (6) When the workpiece is processed and needs to be removed, the first button 7 is manually pressed, and the first bevel block 12 starts to move downward, while driving the second bevel block 11 to move away from the first clamping plate 2. The second bevel block 11 drives the driving block 9 to move in the same direction through the connecting block 10, and the compression spring 6 contracts. The distance between the first clamping plate 1 and the second clamping plate 4 increases, and the workpiece can be safely removed.

[0063] (7) When the second clamping plate 4 moves in a direction away from the first clamping plate 2, when the groove 15 is aligned with the locking block 13, the locking block 13 is popped up by the locking spring 14, the second button 8 is lifted, the locking block 13 is stuck in the groove 15, and the driving block 9 cannot move back and forth.

[0064] The applicant declares that the above is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention are within the protection scope and disclosure scope of the present invention.

Claims

1. A self-locking clamping device, characterized in that: include: Base (1); A first clamping plate (2) arranged at one end of the base (1); A boss (3) arranged at the other end of the base (1); a second clamping plate (4) slidably disposed between the first clamping plate (2) and the boss (3); Two parallel guide rods (5) are connected between the boss (3) and the first clamping plate (2); the second clamping plate (4) is inserted through the two guide rods (5) and is capable of moving along the two guide rods (5); an elastic driving element, which is sandwiched between the boss (3) and the second clamping plate (4) and is capable of driving the second clamping plate (4) away from the boss (3); the elastic driving element is a compression spring (6), and the number of the compression springs (6) is two, which are respectively passed through the two guide rods (5); a sliding control device, which is arranged on the boss (3) and is capable of controlling the second clamping plate (4) to overcome the elastic force of the elastic driving element and move towards the boss (3); The sliding control device comprises a first button (7), a first inclined block (12), a second inclined block (11), a connecting block (10) and a driving block (9) which are connected in sequence, one end of the first button (7) passes through the upper surface of the boss (3), and the other end is connected to the end surface of the first inclined block (12); the first inclined block (12) is longitudinally slidably arranged inside the boss (3), and the lower surface is an inclined surface; the inclined surface of the first inclined block (12) contacts and cooperates with the inclined surface of the second inclined block (11); one end of the second inclined block (11) away from the first inclined block (12) passes through the side surface of the boss (3) and is connected to one end of the connecting block (10); the other end of the connecting block (10) is connected to the driving block (9); the driving block (9) is parallel to the longitudinal direction of the second inclined block (11); and one end of the driving block (9) away from the connecting block (10) is connected to the second clamping plate (4); a locking mechanism, which is arranged on the boss (3) and is capable of locking the sliding control device; when the locking mechanism locks the sliding control device, the second clamping plate (4) remains stationary relative to the first clamping plate (2); The locking mechanism comprises: A groove (15) provided on a side wall of the driving block (9); a locking block (13), which is arranged on a side of the driving block (9) where the groove (15) is provided, and is capable of reciprocating in a direction perpendicular to the length direction of the driving block (9), and is capable of being inserted into the groove (15) when aligned with the groove (15); A locking spring (14), which is connected below the locking block (13); A second button (8) disposed above the locking block (13) and having one end extending out of the upper surface of the boss (3); After the drive block (9) is unlocked, the compression spring (6) begins to stretch and pushes the second clamping plate (4) to move towards the first clamping plate (2), and the second clamping plate (4) and the first clamping plate (2) work together to clamp the workpiece.

2. The self-locking clamping device according to claim 1, characterized in that: The boss (3) is provided with a first slide groove, a second slide groove, a third slide groove and a fourth slide groove, the first button (7) is slidably engaged with the first slide groove, the first inclined block (12) is slidably engaged with the second slide groove, the second inclined block (11) is slidably engaged with the third slide groove, and the driving block (9) is slidably engaged with the fourth slide groove.

3. The self-locking clamping device according to claim 2, characterized in that: A step surface is formed between the first sliding groove and the second sliding groove, and the first inclined block (12) can abut against the step surface.

4. The self-locking clamping device according to claim 1, characterized in that: A fifth sliding groove and a sixth sliding groove are provided in the boss (3); the second button (8) is slidably engaged with the fifth sliding groove; and the locking block (13) is slidably engaged with the sixth sliding groove.

5. The self-locking clamping device according to claim 4, characterized in that: A step surface is formed between the fifth slide groove and the sixth slide groove, and the locking block (13) can abut against the step surface. When the locking block (13) abuts against the step surface, the locking block (13) is inserted into the groove (15).

6. The self-locking clamping device according to claim 1, characterized in that: The groove (15) is a vertically arranged through groove.

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