Material clamping device

Abstract

The utility model relates to the technical field of clamping, in particular to a material clamping device which comprises a shell, an elastic piece, an ejector rod, a telescopic driver, a sleeve nozzle and a chuck, a cavity is axially formed in the shell, the telescopic end of the telescopic driver is located in the cavity, an expansion hole is formed in the bottom of the sleeve nozzle, a through hole is axially formed in the chuck, and a plurality of elastic clamping pieces are arranged at the bottom of the chuck. The multiple elastic clamping pieces extend into the expansion hole, the inner wall of the bottom end of each elastic clamping piece is sequentially provided with an inclined face and a clamping groove from top to bottom, the bottom of the ejector rod is slidably inserted into the through hole, a limiting block is arranged at the top of the ejector rod and located in the cavity, and the elastic piece is clamped between the limiting block and the top end face of the chuck or the top end face of the sleeve nozzle. The bottom end of the ejector rod is provided with an inverted conical section, the conical surface of the inverted conical section is used for abutting against the inclined faces of the multiple elastic clamping pieces, and the telescopic end of the telescopic driver abuts against the top face of the limiting block. The clamping device is simple in structure, convenient to produce and manufacture, low in cost and capable of rapidly and efficiently clamping or releasing materials.

Description

TECHNICAL FIELD

[0001] The utility model relates to clamping technology field especially is a kind of clamping device. BACKGROUND

[0002] In material processing production process, often need to clamp material device to clamp material, then processing equipment is processed to the material clamped. In prior art, the Chinese patent document with application No.202310531936.6 discloses a double-acting cylinder 3c spring chuck clamping mechanism, including shell, the cylinder seat of being located at the front end of the shell, the piston is arranged in the cylinder seat, the inner wall of the piston is provided with two bearings, the inner ring of the bearing is provided with chuck seat, the chuck seat, the piston, two bearings are integrated, the shaft core hole of the chuck seat is provided with 3c chuck, the piston drives the chuck seat to move forward and backward to make the chuck seat tighten or loosen the 3c chuck. The structure of the patent document is complex, and the airway is more, which is not conducive to production and manufacturing, and increases the cost. Therefore, the defect is very obvious, and a solution is urgently needed. SUMMARY

[0003] In order to solve the above technical problems, the purpose of the utility model is to provide a kind of clamping device.

[0004] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0005] A kind of clamping device, it includes shell, elastic member, top rod, telescopic driver installed on the top of shell, the sleeve nozzle installed on the bottom of shell and the chuck installed on the sleeve nozzle, the axial direction of shell is provided with cavity, the telescopic end of telescopic driver is located in the cavity, the bottom of sleeve nozzle is provided with expansion hole, the axial direction of chuck is provided with through hole, the bottom of chuck is provided with a plurality of elastic clamping pieces, a plurality of elastic clamping pieces extend into expansion hole, a plurality of elastic clamping pieces are distributed in annular array around through hole, the inner wall of the bottom end of elastic clamping piece is sequentially provided with inclined surface and clamping groove from top to bottom, the bottom of top rod is slidably inserted into through hole, the top of top rod is provided with limit block, limit block is located in cavity, elastic member is clamped between the top end surface of limit block or the top end surface of sleeve nozzle, the bottom end of top rod is provided with inverted taper section, the taper surface of inverted taper section is used to abut against the inclined surface of a plurality of elastic clamping pieces respectively, and the telescopic end of telescopic driver abuts against the top surface of limit block.

[0006] Further, the radial direction of shell is provided with air hole, and the air hole is communicated with the cavity.

[0007] Further, air pipe joint is installed at air hole.

[0008] Further, the top of sleeve nozzle is provided with embedded ring, and the embedded ring is embedded in the bottom end of cavity.

[0009] Further, the top of the chuck is provided with a limiting ring, the limiting ring is located in the embedding ring and abuts against the bottom wall of the embedding ring.

[0010] Further, the embedding ring is internally embedded with a locking ring, the locking ring is used for locking the limiting ring in the embedding ring, the top rod penetrates through the limiting ring and the locking ring, the elastic member is located in the locking ring and elastically abuts against the limiting ring.

[0011] Further, the inner wall of the embedding ring is provided with an internal thread, the outer side wall of the locking ring is provided with an external thread, and the external thread is threadedly connected with the internal thread.

[0012] Further, the inner hole of the locking ring is a non-circular screw hole.

[0013] Further, the elastic member is a spring, and the spring is sleeved on the top rod.

[0014] Further, the outer side wall of the sleeve nozzle is provided with a limiting lock plate, and the limiting lock plate is used for abutting against the bottom end face of the shell.

[0015] The utility model discloses a beneficial effect: in practical application, the telescopic end of telescopic drive stretches and presses down the limiting block, makes the limiting block move down and compresses the elastic member, and the limiting block that moves down takes down the top rod, and the taper surface of the inverted taper section of the top rod that moves down will extrude the inclined surface of multiple elastic clamping pieces, so that multiple elastic clamping pieces are far from each other, namely multiple elastic clamping pieces open, at this moment, the material clamping device moves to the material, and the top end of the material is located in the material clamping groove of multiple elastic clamping pieces, then the telescopic end of telescopic drive retracts, and the elastic member stretches and pushes up the limiting block, so that the limiting block takes up the top rod, and the taper surface of the inverted taper section gradually releases the extrusion force on the inclined surface, so that multiple elastic clamping pieces are close to each other, namely multiple elastic clamping pieces contract, so that the top end of the material is clamped in the material clamping groove of multiple elastic clamping pieces. The utility model discloses simple structure, convenient production and manufacture, low cost, can quickly and efficiently clamp or release material. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the sectional view of the utility model.

[0017] Figure 2 It is the three-dimensional structure schematic diagram of the utility model.

[0018] BRIEF DESCRIPTION OF DRAWINGS

[0019] 1, shell, 2, elastic member, 3, top rod, 4, telescopic drive, 5, sleeve nozzle, 6, chuck, 7, cavity, 8, expansion hole, 9, through hole, 10, elastic clamping piece, 11, inclined surface, 12, material clamping groove, 13, limiting block, 14, inverted taper section, 15, air hole, 16, gas pipe joint, 17, embedding ring, 18, limiting ring, 19, locking ring, 20, limiting lock plate. DETAILED DESCRIPTION

[0020] For the convenience of those skilled in the art to understand, the utility model is further explained below in combination with examples and drawings, and the content mentioned in the implementation manner is not a limitation on the utility model.

[0021] As shown in Figure 1 and Figure 2 The utility model provides a kind of material clamping device, it includes shell 1, elastic member 2, top rod 3, be equipped with in the top of shell 1 telescopic driver 4, be equipped with in the bottom of shell 1 mouthpiece 5 and be equipped with in the clamp head 6 of mouthpiece 5, the axial direction of shell 1 is provided with cavity 7, and the telescopic end of telescopic driver 4 is located in cavity 7, and the bottom of mouthpiece 5 is provided with expansion hole 8, and the axial direction of clamp head 6 is provided with through-hole 9, and the bottom of clamp head 6 is provided with multiple elastic clamping pieces 10, multiple elastic clamping pieces 10 extend into expansion hole 8, multiple elastic clamping pieces 10 are annular array distribution around through-hole 9, and the bottom end inner wall of elastic clamping piece 10 is sequentially provided with inclined surface 11 and material clamping groove 12 from top to bottom, and the bottom of top rod 3 is slidably inserted into through-hole 9, and the top of top rod 3 is provided with limit block 13, and limit block 13 is located in cavity 7, and elastic member 2 is clamped between the top end surface of limit block 13 and clamp head 6 or the top end surface of mouthpiece 5, and the bottom end of top rod 3 is provided with inverted taper section 14, and the taper surface of inverted taper section 14 is used to respectively contact with the inclined surface 11 of multiple elastic clamping pieces 10, and the telescopic end of telescopic driver 4 is in contact with the top surface of limit block 13.Specifically, telescopic driver 4 can adopt air cylinder, and limit block 13 is always in contact with the telescopic end of telescopic driver 4 under the elastic force of elastic member 2, and expansion hole 8 provides space for the opening of multiple elastic clamping pieces 10.

[0022] In practical application, the telescopic end of telescopic driver 4 stretches and presses down limit block 13, so that limit block 13 moves down and compresses elastic member 2, and the moving-down limit block 13 takes top rod 3 to move down, and the taper surface of inverted taper section 14 of moving-down top rod 3 extrudes the inclined surface 11 of multiple elastic clamping pieces 10, so that multiple elastic clamping pieces 10 are away from each other, i.e. multiple elastic clamping pieces 10 open, at this time material clamping device moves to material, and the top end of material is located in the material clamping groove 12 of multiple elastic clamping pieces 10, then the telescopic end of telescopic driver 4 retracts, and elastic member 2 stretches and pushes up limit block 13, so that limit block 13 takes top rod 3 to move up, and the taper surface of inverted taper section 14 gradually releases the extrusion force on inclined surface 11, so that multiple elastic clamping pieces 10 are close to each other, i.e. multiple elastic clamping pieces 10 contract, so that the top end of material is clamped in the material clamping groove 12 of multiple elastic clamping pieces 10.The structure of the utility model is simple, easy to produce and manufacture, low in cost, and can quickly and efficiently clamp or release material.

[0023] In the embodiment, the shell 1 is radially provided with a vent hole 15, which is in communication with the cavity 7. In actual application, a positive pressure gas is introduced into the vent hole 15 from an external gas source, and the positive pressure gas enters the cavity 7 and is blown out through the gap between the chuck 6 and the ejector rod 3, so that the positive pressure gas can blow away dust, iron filings and the like on the plurality of elastic clamping pieces 10.

[0024] In the embodiment, the vent hole 15 is provided with a gas pipe joint 16. The gas pipe joint 16 is used to communicate with the external gas source.

[0025] In the embodiment, the top of the sleeve nozzle 5 is provided with an embedded ring 17, which is embedded at the bottom end of the cavity 7. Specifically, the outer side wall of the embedded ring 17 is threadedly connected with the bottom end of the cavity 7. This structure design facilitates the disassembly and assembly of the sleeve nozzle 5 and the shell 1.

[0026] In the embodiment, the top of the chuck 6 is provided with a limiting ring 18, which is located in the embedded ring 17 and abuts against the bottom wall of the embedded ring 17. The limiting ring 18 abuts against the bottom wall of the embedded ring 17 to limit the chuck 6, thereby improving the position accuracy and stability of the chuck 6 installed in the sleeve nozzle 5.

[0027] In the embodiment, the embedded ring 17 is embedded with a lock ring 19, which is used to lock the limiting ring 18 in the embedded ring 17. The ejector rod 3 penetrates the limiting ring 18 and the lock ring 19, and the elastic member 2 is located in the lock ring 19 and elastically abuts against the limiting ring 18. The lock ring 19 locks the limiting ring 18 on the bottom wall of the embedded ring 17, further improving the position accuracy and stability of the chuck 6 installed in the sleeve nozzle 5.

[0028] In the embodiment, the inner wall of the embedded ring 17 is provided with an internal thread, and the outer side wall of the lock ring 19 is provided with an external thread. The external thread is threadedly connected with the internal thread. The lock ring 19 is threadedly connected with the embedded ring 17, so that the connection between the two is firm and convenient to disassemble and assemble.

[0029] In the embodiment, the inner hole of the lock ring 19 is a non-circular screw hole. In actual use, a screwdriver is inserted into the non-circular screw hole, and the screwdriver can rotate the lock ring 19, so as to realize the disassembly and assembly of the lock ring 19 and the embedded ring 17.

[0030] In the embodiment, the elastic member 2 is a spring, which is sleeved on the ejector rod 3. The ejector rod 3 limits and guides the spring, thereby improving the working stability of the spring.

[0031] In the embodiment, the outer side wall of the sleeve nozzle 5 is provided with a limiting lock plate 20, which is used to abut against the bottom end surface of the shell 1. The limiting lock plate 20 is locked on the shell 1 through a locking member, which is a bolt. After the sleeve nozzle 5 and the shell 1 are assembled in place, the limiting lock plate 20 abuts against the bottom end surface of the shell 1 to limit the sleeve nozzle 5, and then the limiting lock plate 20 is locked on the shell 1 through the locking member, so that the position precision and stability of the assembly of the sleeve nozzle 5 and the shell 1 are improved.

[0032] All the technical features in the embodiment can be freely combined according to actual needs.

[0033] The above embodiment is a preferred implementation scheme of the utility model, and the utility model can also be implemented in other manners, and any obvious replacement without departing from the technical scheme concept is within the protection scope of the utility model.

Claims

1. A clamp apparatus, characterized by: The utility model provides a kind of device for the automatic feeding of tobacco, including shell (1), elastic piece (2), top rod (3), retractable driver (4) installed on the top of shell (1), mouthpiece (5) installed on the bottom of shell (1) and chuck (6) installed on mouthpiece (5), the axial direction of shell (1) is provided with cavity (7), the retractable end of retractable driver (4) is located in cavity (7), the bottom of mouthpiece (5) is provided with expansion hole (8), the axial direction of chuck (6) is provided with through hole (9), the bottom of chuck (6) is provided with multiple elastic clamping pieces (10), multiple elastic clamping pieces (10) extend into expansion hole (8), multiple elastic clamping pieces (10) are annular array distribution around through hole (9), the inner wall of the bottom end of elastic clamping piece (10) is sequentially provided with inclined surface (11) and clamping groove (12) from top to bottom, the bottom of top rod (3) is slidably inserted into through hole (9), the top of top rod (3) is provided with limit block (13), limit block (13) is located in cavity (7), elastic piece (2) is clamped between limit block (13) and the top end surface of chuck (6) or the top end surface of mouthpiece (5), the bottom end of top rod (3) is provided with inverted taper section (14), the taper surface of inverted taper section (14) is used to respectively contact with the inclined surface (11) of multiple elastic clamping pieces (10), and the retractable end of retractable driver (4) contacts with the top surface of limit block (13).

2. A clamp apparatus according to claim 1, wherein: The radial direction of shell (1) is provided with air hole (15), and air hole (15) communicates with cavity (7).

3. A clamp apparatus according to claim 2, wherein: Air pipe joint (16) is installed at air hole (15).

4. The material gripping device of claim 1, wherein: The top of mouthpiece (5) is provided with embedded ring (17), and embedded ring (17) is embedded in the bottom end of cavity (7).

5. A clamp apparatus according to claim 4, wherein: The top of chuck (6) is provided with limit ring (18), and limit ring (18) is located in embedded ring (17) and contacts with the bottom wall of embedded ring (17).

6. A clamp apparatus according to claim 5, wherein: Lock ring (19) is embedded in embedded ring (17), and lock ring (19) is used to lock limit ring (18) in embedded ring (17), top rod (3) penetrates limit ring (18) and lock ring (19), and elastic piece (2) is located in lock ring (19) and elastically contacts with limit ring (18).

7. A clamp apparatus according to claim 6, wherein: The inner wall of embedded ring (17) is provided with internal thread, the outer side wall of lock ring (19) is provided with external thread, and the external thread is threadedly connected with the internal thread.

8. A clamp apparatus according to claim 7, wherein: The inner hole of lock ring (19) is a non-circular screw hole.

9. The material gripping device of claim 1, wherein: Elastic piece (2) is a spring, and the spring is sleeved on top rod (3).

10. The material gripping device of claim 1, wherein: The outer side wall of mouthpiece (5) is provided with limit lock plate (20), and limit lock plate (20) is used to contact with the bottom end surface of shell (1).

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