Pneumatic clamp

Abstract

The utility model discloses pneumatic clamp, its characterized in that, including sealing block and the sealing board of covering on sealing block, the middle position at sealing board bottom end is vertically formed with the convex column of inserting in sealing block inside, and the hollow state is presented to the inside of convex column, and the pull pin is vertically inserted to the inside of convex column, a plurality of steel ball holes are formed with the convex column, and a plurality of steel ball holes are all distributed at the side wall of the inside of convex column around, and the sliding slot opposite with the convex column is formed to the side wall place in sealing block inside, and a plurality of steel balls are arranged between the clearance of sliding slot and convex column.

Description

Technical Field

[0001] This utility model relates to the field of clamps, and in particular to pneumatic clamps. Background Technology

[0002] Traditional clamping fixtures for CNC engraving machines that require full-surface machining of workpieces use pressure plates to hold the workpiece edges. However, when external machining is required on all four sides, it is impossible to tighten the parts from all four sides, and the system manufacturing cannot meet the usage requirements. Therefore, pneumatic clamping fixtures are proposed. Utility Model Content

[0003] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0004] A pneumatic clamp includes a sealing block and a sealing plate covering the sealing block. A protrusion is vertically formed at the middle of the bottom end of the sealing plate and inserted into the sealing block. The protrusion is hollow and a pull pin is vertically inserted into the protrusion. The protrusion has several steel ball holes, which are distributed around the side wall inside the protrusion. A groove is formed on the side wall inside the sealing block opposite to the protrusion, and several steel balls are disposed in the gap between the groove and the protrusion.

[0005] Preferably, a plurality of elastic components are provided between the sealing plate and the sealing block, and the plurality of elastic components are vertically distributed around the surface of the sealing block, and the other end of the plurality of elastic components is elastically connected to the sealing plate.

[0006] Preferably, a boss and a groove are provided between the sealing plate and the sealing block. The boss is vertically formed around the middle position of the sealing block, and the groove is formed at the middle position of the bottom end of the sealing plate. The groove surrounds the edge of the boss, and the groove arches upward. The groove and the boss are aligned with each other.

[0007] Preferably, the sealing block is connected to an air inlet pipe for external gas to enter its interior, and the air inlet pipe is vertically located at the bottom end of the sealing block.

[0008] Compared with the prior art, the beneficial effects of this utility model are as follows: When the sealing block moves upward towards the bottom of the sealing plate, the sealing block and the sealing plate close together, aligning the several steel ball holes with the slide groove. At this time, several steel balls between the slide groove and the protrusion protrude from the inside of the several steel ball holes, and abut against and limit the pull pin inserted inside the protrusion, so that the pull pin can be precision machined. When several steel balls protrude from the inside of the several steel ball holes, the sealing block has been reset. When it is necessary to remove the pull pin inside the protrusion, the sealing block is pneumatically lifted, so that the several steel ball holes and the slide groove are re-aligned. At this time, the several steel balls located inside the several steel ball holes roll back to the gap between the slide groove and the protrusion, so that the pull pin inserted inside the protrusion can be removed.

[0009] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is a schematic diagram of the pneumatic clamp.

[0012] Figure 2 This is another schematic diagram of a pneumatic clamp;

[0013] Figure 3 This is another structural schematic diagram of a pneumatic clamp;

[0014] Figure 4 This is a schematic diagram of the internal structure of a pneumatic clamp.

[0015] The following are shown in the figure: 1. Sealing plate, 2. Sealing block, 3. Pull pin, 4. Air inlet pipe, 5. Boss, 6. Groove, 7. Steel ball hole, 8. Steel ball, 9. Protruding post, 10. Slide groove. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-4 In this embodiment of the utility model, the pneumatic clamp includes a sealing block 2 and a sealing plate 1 covering the sealing block 2. A protrusion 9, inserted into the interior of the sealing block 2, is vertically formed at the middle position of the bottom end of the sealing plate 1. The protrusion 9 is hollow, and a pull pin 3 is vertically inserted inside the protrusion 9. The protrusion 9 has several steel ball holes 7, which are distributed around the inner sidewall of the protrusion 9. A sliding groove 10, opposite to the protrusion 9, is formed on the inner sidewall of the sealing block 2. Several steel balls 8 are disposed in the gap between the sliding groove 10 and the protrusion 9. Therefore, when the sealing block 2 moves upward towards the bottom end of the sealing plate 1, the sealing block 2 and the sealing plate 1 close together, causing... Several steel ball holes 7 are aligned with the slide groove 10, and at this time, several steel balls 8 between the slide groove 10 and the protrusion 9 protrude from the inside of several steel ball holes 7, and abut against and limit the pull pin 3 inserted inside the protrusion 9 so that the pull pin 3 can be precision machined. When several steel balls 8 protrude from the inside of several steel ball holes 7, the sealing block 2 has been reset. When it is necessary to remove the pull pin inside the protrusion 9, the sealing block 2 is pneumatically lifted so that several steel ball holes 7 are aligned with the slide groove 10 again. At this time, several steel balls 8 located inside several steel ball holes 7 roll back to the gap between the slide groove 10 and the protrusion 9, so that the pull pin 3 inserted inside the protrusion 9 can be removed.

[0018] A plurality of elastic components (not shown in the figure) are provided between the sealing plate 1 and the sealing block 2, and the plurality of elastic components are vertically distributed around the surface of the sealing block 2, and the other end of the plurality of elastic components is elastically connected to the sealing plate 1, so that the sealing plate 1 and the sealing block 2 can be elastically joined together through the plurality of elastic components, and the elastic components can be springs.

[0019] A boss 5 and a groove 6 are provided between the sealing plate 1 and the sealing block 2. The boss 5 is vertically formed around the middle position of the sealing block 2, and the groove 6 is formed at the middle position of the bottom end of the sealing plate 1. The groove 6 surrounds the edge of the protrusion 9. The groove 6 arches upward and is aligned with the boss 5. When the sealing plate 1 and the sealing block 2 are pressed together, the boss 5 can be inserted into the groove 6. The mutual insertion and cooperation between the boss 5 and the groove 6 ensures that the sealing plate 1 and the sealing block 2 will not be misaligned when they are closed.

[0020] The sealing block 2 is connected to an air inlet pipe 4 for external gas to enter its interior, and the air inlet pipe 4 is vertically located at the bottom end of the sealing block 2.

[0021] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A pneumatic clamp, characterized in that, The device includes a sealing block and a sealing plate covering the sealing block. A protrusion is vertically formed at the middle of the bottom end of the sealing plate and inserted into the sealing block. The protrusion is hollow and a pull pin is vertically inserted into the protrusion. The protrusion has several steel ball holes, which are distributed around the side wall inside the protrusion. A groove is formed on the side wall inside the sealing block opposite to the protrusion, and several steel balls are disposed in the gap between the groove and the protrusion.

2. The pneumatic clamp of claim 1, wherein, Several elastic components are provided between the sealing plate and the sealing block, and the elastic components are vertically distributed around the surface of the sealing block, and the other end of the elastic components is elastically connected to the sealing plate.

3. The pneumatic clamp of claim 1, wherein, A boss and a groove are provided between the sealing plate and the sealing block. The boss is vertically formed around the middle position of the sealing block, and the groove is formed at the middle position of the bottom end of the sealing plate. The groove surrounds the edge of the boss. The groove arches upward and is aligned with the boss.

4. The pneumatic clamp of claim 1, wherein, The sealing block is connected to an air inlet pipe that allows external gas to enter its interior, and the air inlet pipe is located vertically at the bottom end of the sealing block.

Images