Pneumatic bench vice

Abstract

The utility model provides a kind of pneumatic bench vice, including bottom plate, stop block, telescopic pressure block subassembly and pneumatic control assembly, telescopic pressure block subassembly includes pedestal, pneumatic piston cylinder, wedge block, pressure block and sliding block, wedge block is equipped with wedge block inclined plane;The first end of sliding block is equipped with sliding block inclined plane;The sliding block inclined plane can be with the wedge block inclined plane abutment cooperation, so that the sliding block can be driven by the wedge block and along the sliding cavity movement;The wedge block and the sliding block are formed by the cooperation of the wedge block inclined plane and the sliding block inclined plane Self-locking structure, when encountering accidental power failure or gas source interruption, even if pneumatic piston cylinder is instantaneously released due to loss of pressure, by the self-locking structure can keep effective clamping to workpiece, will not cause workpiece displacement, improve production safety, and overall compact volume, can realize machined part quick reloading.

Description

Technical Field

[0001] This utility model relates to the field of clamping tool technology, and in particular to a pneumatic bench vise. Background Technology

[0002] In traditional manual bench vises, operators need to frequently tighten and loosen the lead screw during workpiece clamping, which not only leads to low processing efficiency and high work intensity, but also results in unstable clamping force, making it difficult to meet the needs of automated production.

[0003] To address this issue, pneumatic bench vises have emerged on the market. However, existing pneumatic solutions generally suffer from several design flaws: First, the overall structure is relatively loose, resulting in low positioning accuracy during clamping and affecting the dimensional accuracy and stability of the final product; second, safety is lacking, with a general absence of anti-pinch safety mechanisms, posing a safety hazard to operators when changing workpieces; third, there are risks in the event of power or air supply interruptions. When an unexpected power outage or air supply interruption occurs, the cylinder may instantly disengage due to pressure loss, failing to maintain effective clamping of the workpiece, potentially leading to workpiece displacement or even damage, thus constituting a production safety issue.

[0004] In summary, existing manual and pneumatic bench vises have significant shortcomings in terms of efficiency, accuracy, safety, and stability, and there is an urgent need for a more optimized clamping solution. Utility Model Content

[0005] Therefore, in response to at least one of the above problems, this utility model provides a pneumatic bench vise.

[0006] This utility model is achieved using the following solution:

[0007] This utility model discloses a pneumatic bench vise, including a base plate, a stop block, a telescopic pressure block assembly, and a pneumatic control assembly. The stop block is fixed to the base plate, and the telescopic pressure block assembly is displaceably disposed on the base plate, allowing it to move on the base plate to move closer to or away from the stop block. The telescopic pressure block assembly includes:

[0008] The base is provided with a sliding cavity;

[0009] A pneumatic piston cylinder, wherein the pneumatic piston cylinder is fixedly installed on the base;

[0010] A wedge block, the wedge block being connected to the piston rod of the pneumatic piston cylinder, the wedge block having a wedge-shaped inclined surface;

[0011] A slider is slidably fitted into the sliding cavity; the slider includes a first end and a second end in opposite directions, and the first end of the slider is provided with a slider inclined surface; the slider inclined surface can abut against the wedge block inclined surface, so that the slider can be driven by the wedge block to move along the sliding cavity; the wedge block and the slider form a self-locking structure through the cooperation of the wedge block inclined surface and the slider inclined surface;

[0012] A pressure block, which is connected to the second end of the slider.

[0013] In one embodiment, the wedge block is further provided with a rear end face, which is disposed opposite to the inclined surface of the wedge block. The base is provided with a limiting wall at the bottom end of the sliding cavity, and the rear end face abuts against the limiting wall.

[0014] In one embodiment, the inclined surface of the slider has two sidewalls extending along the axis of the slider, and both sidewalls are provided with a reset protrusion protruding inward; a reset groove is provided on both sides of the wedge block, and the reset protrusion and the reset groove are engaged by the inclined surface.

[0015] In one embodiment, a protective cover is installed on the side of the pressure block facing the base. The protective cover is inverted U-shaped and can cover the gap between the pressure block and the base on three sides.

[0016] In one embodiment, a guide key is installed on the bottom surface of the base. The guide key protrudes from the bottom surface of the base and extends to the bottom surface of the pressure block, cooperating with a guide groove provided on the bottom surface of the pressure block.

[0017] In one embodiment, a keyway is provided in the middle of the base plate, and the keyway cooperates with the lower part of the guide key.

[0018] In one embodiment, the base plate is provided with two parallel sliding grooves along its length, and the cross-section of the sliding grooves is "A"-shaped; the lower end of the base is connected to a T-shaped slider, which is slidably engaged with the upper part of the sliding grooves.

[0019] In one embodiment, the upper end faces of the stop block and the pressure block are provided with tooth holes.

[0020] In one embodiment, the pneumatic control assembly includes a pneumatic control box mounted on the side of the base away from the pressure block. The pneumatic control box includes a control box housing and an air circuit assembly, which includes a pressure regulating valve and a manual valve.

[0021] In one embodiment, the pneumatic control component further includes a solenoid valve to enable automatic control of the air path.

[0022] The technical solution provided by this utility model has the following technical effects:

[0023] 1. This utility model provides a pneumatic bench vise, including a base plate, a stop block, a telescopic pressure block assembly, and a pneumatic control assembly. The telescopic pressure block assembly includes a base, a pneumatic piston cylinder, a wedge block, a pressure block, and a slider. The wedge block has a wedge inclined surface; the first end of the slider has a slider inclined surface; the slider inclined surface can abut against the wedge inclined surface, so that the slider can be driven by the wedge block to move along the sliding cavity; the wedge block and the slider form a self-locking structure through the cooperation of the wedge inclined surface and the slider inclined surface. When encountering an accidental power failure or air supply interruption, even if the pneumatic piston cylinder is momentarily released due to pressure loss, the self-locking structure can maintain effective clamping of the workpiece, preventing workpiece displacement, improving production safety, and the overall size is compact, enabling rapid change of machined parts.

[0024] 2. The wedge block is further provided with a rear end face, and the base is provided with a limiting wall at the bottom end of the sliding cavity. The rear end face abuts against the limiting wall. The limiting wall can provide a reaction force to the wedge block and further limit the wedge block. Even when the pneumatic piston cylinder loses pressure, the limiting wall limits the wedge block and counteracts the force from the direction of the clamped object on the wedge block, thereby maintaining the position of the wedge block. The self-locking structure formed by the wedge block inclined surface and the slider inclined surface cooperates with each other to maintain effective clamping of the workpiece.

[0025] 3. A protective cover is installed on the side of the pressure block facing the base. The protective cover is an inverted U-shape and can cover the gap between the pressure block and the base on three sides, thereby preventing fingers from being pinched when the pressure block moves and improving the safety of the equipment. Attached Figure Description

[0026] Figure 1 This is a perspective view of the pneumatic bench vise according to an embodiment of the present utility model;

[0027] Figure 2 This is a partial exploded view of the pneumatic bench vise from the above embodiment;

[0028] Figure 3 This is a full sectional view of the pneumatic bench vise of the above embodiment;

[0029] Figure 4 This is a partial exploded view of the telescopic pressure block assembly of the above embodiment;

[0030] Figure 5 This is a full sectional view of the telescopic pressure block assembly of the above embodiment;

[0031] Figure 6 This is a partially exploded view of the pneumatic bench vise of the above embodiment, with a partial cross-section.

[0032] Figure 7 This is a perspective view of multiple pneumatic bench vises integrated and arranged side by side in the above embodiment. Detailed Implementation

[0033] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention and are mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. Components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0034] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0035] like Figures 1-7 As shown, this embodiment provides a pneumatic bench vise 1 capable of quickly changing workpieces during machining. It includes a base plate 10, a stop block 20, a telescopic pressure block assembly 30, and a pneumatic control assembly. The stop block 20 is fixed to the base plate 10, and the telescopic pressure block assembly 30 is movable on the base plate 10, allowing it to move closer to or away from the stop block 20. A clamped object (not shown) is positioned between the stop block 20 and the telescopic pressure block assembly 30. By manipulating the position of the telescopic pressure block assembly 30, it can be brought closer to the clamped object (not shown), allowing the clamping mechanism on the telescopic pressure block assembly 30 to subsequently press the clamped object against the stop block 20. This will be explained in more detail later.

[0036] The telescopic pressure block assembly 30 includes a base 36, a pneumatic piston cylinder 31, a wedge block 32, a pressure block 35, and a slider 33. The slider 33 has a first end and a second end in opposite directions. The first end of the slider 33 has a slider inclined surface 331, and the second end of the slider 33 is connected to the pressure block 35. The base 36 has a sliding cavity 361, and the slider 33 slidably engages with the sliding cavity 361. The pneumatic piston cylinder 31 is fixedly installed on the base 36, and the axial direction of the pneumatic piston cylinder 31 is perpendicular to the axial direction of the slider 33. The piston rod of the pneumatic piston cylinder 31 is connected to the wedge block 32; when the piston rod of the pneumatic piston cylinder 31 moves, it can drive the wedge block 32 to move up and down. The wedge block 32 has a wedge-shaped inclined surface 321, which can abut against the inclined surface 331 of the slider 33. The up-and-down movement of the wedge block 32 can act on the inclined surface 331 of the slider through the wedge-shaped inclined surface 321, thereby driving the slider 33 to move along the sliding cavity 361. For example, it can drive the slider 33 to move closer to the stop block 20. Since the telescopic pressure block assembly 30 and the clamped object are close to each other with only a small gap, as mentioned above, and the stroke of the slider 33 is greater than this gap, the slider 33 is pushed and moves horizontally, thereby pressing the clamped object against the stop block 20, thus achieving clamping of the clamped object. In this device, the axis of the pneumatic piston cylinder 31 is perpendicular to the axis of the slider 33, and a structure is adopted in which the wedge-shaped inclined surface 321 and the slider inclined surface 331 cooperate with each other. In the event of an accidental power failure or interruption of the air supply, even if the pneumatic piston cylinder 31 is momentarily released due to depressurization, the wedge-shaped block 32 and the slider 33 form a self-locking structure through the cooperation of the wedge-shaped inclined surface 321 and the slider inclined surface 331. This self-locking structure can maintain effective clamping of the workpiece and prevent workpiece displacement, thereby improving production safety. Furthermore, the pneumatic piston cylinder 31 is fixedly installed on the base 36, resulting in a compact overall size, simple device, and easy operation, enabling rapid changeover of machined parts.

[0037] The wedge block 32 is also provided with a rear end face 322, which is disposed opposite to the wedge block inclined surface 321 on the wedge block 32. The base 36 is provided with a limiting wall surface 362 at the bottom end of the sliding cavity 361. The rear end face 322 abuts against the limiting wall surface 362, so that the limiting wall surface 362 can provide a reaction force for the wedge block 32 and further limit the wedge block 32. Even when the pneumatic piston cylinder 31 loses pressure, the limiting wall surface 362 limits the wedge block 32 and counteracts the force from the direction of the clamped object on the wedge block 32, thereby maintaining the position of the wedge block 32. And through the self-locking structure formed by the wedge block inclined surface 321 and the slider inclined surface 331, the effective clamping of the workpiece is maintained.

[0038] In this embodiment, two sidewalls 333 extend along the axial direction of the slider 33 on both sides of the inclined surface 331 of the slider. Both sidewalls 333 are provided with a reset protrusion 332 protruding inward. Reset grooves 322 are provided on both sides of the wedge block 32. The reset protrusions 332 and the reset grooves 322 cooperate with each other through the inclined surface. So when the pneumatic piston cylinder 31 drives the wedge block 32 to move upward, the wedge block 32 can drive the slider 33 to move in a horizontal direction away from the stop block 20 through the inclined surface cooperation between the reset protrusions 332 and the reset grooves 322, so that the pressure block 35 is reset and the object is released, which is conducive to realizing automated control.

[0039] The base plate 10 has two parallel sliding grooves 11 along its length, and the cross-section of the sliding grooves 11 is "U". A T-shaped slider 37 is slidably fitted onto the upper part of the sliding groove 11. The lower end of the base 36 is connected to the T-shaped slider 37 by bolts, so that the base 36 can be locked onto the base plate 10 by tightening the bolts connecting the T-shaped slider 37. Alternatively, a headed bolt can be locked onto the lower part of the sliding groove 11 to secure the base plate 10 to the machine tool.

[0040] Reference Figure 4 , 5 A protective cover 34 is installed on the side of the pressure block 35 facing the base 36. The protective cover 34 is an inverted U-shape. The protective cover 34 can be provided with a clearance notch 341 to avoid bolt holes, which are used to pass bolts to connect the T-shaped slider 37. The protective cover 34 can cover the gap between the pressure block 35 and the base 36 on three sides, thereby preventing fingers from being pinched when the pressure block 35 moves, playing an anti-pinch role and improving the safety of the equipment.

[0041] Reference Figure 5 A guide key 38 is installed on the bottom surface of the base 36. The guide key 38 protrudes from the bottom surface of the base 36 and extends to the bottom surface of the pressure block 35. It cooperates with the guide groove 352 provided on the bottom surface of the pressure block 35, so as to play a guiding role when the pressure block 35 is pushed and moves. The movement of the pressure block 35 is more precise, thereby providing the clamping and positioning accuracy of the workpiece and improving the dimensional accuracy of the finished product.

[0042] Reference Figure 6 The base plate 10 also has a keyway 12 between the two sliding grooves 11. The keyway 12 cooperates with the lower part of the guide key 38, thereby guiding the movement of the base 36 on the base plate 10 and improving the movement accuracy of the base 36. That is, this device uses a single guide key 38 on the base 36 to cooperate with both the pressure block 35 and the base plate 10. The single guide key 38 improves the movement accuracy of both the pressure block 35 and the base 36, working together to improve the dimensional accuracy of the finished product, while reducing the number of parts and lowering costs.

[0043] Reference Figure 1, 4 And 5, the upper end face of the stop block 20 and the pressure block 35 are reserved with tooth holes 201 and 351. The tooth holes 201 and 351 can be used to make irregular clamping blocks when the user processes irregular parts, making this device more convenient when applied to irregular parts.

[0044] Reference Figure 4 , 5 The pneumatic piston cylinder 31 has a first air port 311 and a second air port 312 on its side. When air enters through the first air port 311 and exits through the second air port 312, air enters the upper chamber of the pneumatic piston cylinder 31, the piston moves downward, the wedge block 32 presses down, and forces the slider 33 to slide out. Conversely, the movement is reversed.

[0045] Reference Figures 1-3 The pneumatic control assembly includes a pneumatic control box 40, which is mounted on the side of the base 36 away from the pressure block 35. The pneumatic control box 40 controls the air path from the air source to the pneumatic piston cylinder 31. It includes a control box housing 41 and an air path assembly 42, which includes a pressure regulating valve 421 and a manual valve 422. The manual valve 422 is used for manual control of the pneumatic piston cylinder 31. Alternatively, the pneumatic control assembly may also include a solenoid valve to achieve automatic control of the air path, enabling rapid workpiece changeover during machining and allowing switching between manual and automatic control for greater flexibility.

[0046] like Figure 7 As shown, multiple pneumatic bench vises 1 can be integrated and arranged in parallel. Each pneumatic bench vise 1 can be individually adjusted and controlled, thereby enabling simultaneous clamping and processing of multiple components, as well as multi-face clamping and processing of the same workpiece, which greatly improves processing efficiency.

[0047] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims, and all such changes shall be within the scope of protection of the present invention.

Claims

1. A pneumatic bench vise, comprising a base plate, a stop block, a telescopic pressure block assembly, and a pneumatic control assembly, wherein the stop block is fixed to the base plate, the telescopic pressure block assembly is displaceably disposed on the base plate, and the telescopic pressure block assembly is movable on the base plate to move closer to or further away from the stop block; characterized in that, The telescopic compression block assembly includes: The base is provided with a sliding cavity; A pneumatic piston cylinder, wherein the pneumatic piston cylinder is fixedly installed on the base; A wedge block, the wedge block being connected to the piston rod of the pneumatic piston cylinder, the wedge block having a wedge-shaped inclined surface; A slider is slidably fitted into the sliding cavity; the slider includes a first end and a second end in opposite directions, and the first end of the slider is provided with a slider inclined surface; the slider inclined surface can abut against the wedge block inclined surface, so that the slider can be driven by the wedge block to move along the sliding cavity; the wedge block and the slider form a self-locking structure through the cooperation of the wedge block inclined surface and the slider inclined surface; A pressure block, which is connected to the second end of the slider.

2. The pneumatic bench vise according to claim 1, characterized in that: The wedge block also has a rear end face, which is opposite to the inclined surface of the wedge block. The base has a limiting wall at the bottom end of the sliding cavity, and the rear end face abuts against the limiting wall.

3. The pneumatic bench vise according to claim 1, characterized in that: The inclined surface of the slider has two sidewalls extending along the axis of the slider, and both sidewalls are provided with a reset protrusion protruding inward; the wedge block has a reset groove on both sides, and the reset protrusion and the reset groove are engaged by the inclined surface.

4. The pneumatic bench vise according to claim 1, characterized in that: A protective cover is installed on the side of the pressure block facing the base. The protective cover is inverted U-shaped and can cover the gap between the pressure block and the base on three sides.

5. The pneumatic bench vise according to claim 1, characterized in that: A guide key is installed on the bottom surface of the base. The guide key protrudes from the bottom surface of the base and extends to the bottom surface of the pressure block, and cooperates with the guide groove provided on the bottom surface of the pressure block.

6. The pneumatic bench vise according to claim 5, characterized in that: The base plate is also provided with a keyway in the middle, which mates with the lower part of the guide key.

7. The pneumatic bench vise according to claim 1, characterized in that: The base plate has two parallel sliding grooves along its length, and the cross-section of the sliding grooves is "A" shaped; the lower end of the base is connected to a T-shaped slider, which slides into the upper part of the sliding groove.

8. The pneumatic bench vise according to claim 1, characterized in that: The upper surfaces of the stop block and the pressure block are pre-drilled holes.

9. The pneumatic bench vise according to claim 1, characterized in that: The pneumatic control assembly includes a pneumatic control box, which is mounted on the side of the base away from the pressure block. The pneumatic control box includes a control box housing and an air circuit assembly, which includes a pressure regulating valve and a manual valve.

10. The pneumatic bench vise according to claim 9, characterized in that: The pneumatic control components also include solenoid valves to enable automatic control of the air path.

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