Material puller for numerical control machine tool

Abstract

The utility model discloses a material puller for a numerical control machine tool, which comprises a fixed seat and a clamping jaw, the clamping jaw is rotatably connected with the fixed seat, a tightening mechanism is arranged on the inner end face of the clamping jaw, an alternating chuck is arranged at the tail end of the clamping jaw, the tightening mechanism comprises a pull rod, a joint, a connecting rod and a first spring, a sliding hole is arranged on the fixed seat, and the pull rod penetrates through the sliding hole and is slidably connected with the sliding hole. The connector is fixedly installed at the tail end of the pull rod, the connecting rod is rotationally connected with the connector, the end, away from the connector, of the connecting rod is rotationally connected with the middle of the clamping jaw, and the pull rod is elastically connected with the fixing base through the first spring. Through the design of the alternate chucks, the material puller has three clamping surfaces with different structures and can adapt to workpieces with various shapes and surface characteristics, such as plane plates, pipe fittings, arc-shaped plates and materials with uneven surfaces, so that the application range of equipment is greatly widened, the shutdown time caused by clamp replacement is shortened, and the production efficiency is improved. And the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of numerical control machine tool equipment, in particular to a material puller for a numerical control machine tool. Background Art

[0002] A CNC machine tool puller is a device designed specifically to remove finished workpieces or scrap from a CNC machine tool during automated machining. This type of equipment is usually installed on a CNC lathe or other type of CNC machine tool to quickly, accurately and safely remove the workpiece from the cutting area to improve production efficiency and reduce manual intervention. Pullers generally contain movable parts such as puller claws or clamps, which can be driven mechanically, pneumatically or hydraulically to grasp and release the workpiece.

[0003] The existing feeder jaws are mostly planar structures, which may cause the workpiece to fall off during the clamping process due to insufficient fit when clamping pipes or rods. Due to the poor clamping effect, the position or strength of the jaws may need to be adjusted frequently, affecting the continuity and smoothness of the automated production line. The prior art adapts to different types of workpieces by replacing different types of jaws, but the jaws and machine tools are usually fixed with bolts, which makes the jaw disassembly and installation process more complicated, affecting the processing efficiency. Therefore, a feeder for CNC machine tools is needed to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a puller for CNC machine tools, which has the advantages of easy replacement of chucks and good clamping stability, and solves the problems in the prior art that the puller of CNC machine tools has poor fit with the curved surface model and low efficiency in replacing chucks, affecting production efficiency.

[0005] To achieve the above object, the utility model provides the following technical solution: a material puller for a CNC machine tool, comprising a fixed seat and a clamping jaw, the clamping jaw is rotatably connected to the fixed seat, a tightening mechanism is provided on the inner end surface of the clamping jaw, and a rotating chuck is provided at the end of the clamping jaw;

[0006] The tightening mechanism includes a pull rod, a joint, a connecting rod and a first spring. A sliding hole is provided on the fixed seat, and the pull rod passes through the sliding hole and is slidably connected thereto. The joint is fixedly installed at the end of the pull rod, and the connecting rod is rotatably connected to the joint. The end of the connecting rod away from the joint is rotatably connected to the middle part of the clamping claw. The first spring is sleeved on the pull rod, and the pull rod is elastically connected to the fixed seat through the first spring.

[0007] As a preferred puller for a CNC machine tool of the utility model, the interchangeable chuck is an equilateral triangle shaped structure, the side walls of the interchangeable chuck are respectively provided with a first clamping surface, a second clamping surface and a third clamping surface, a rotating shaft is provided at the center of the interchangeable chuck, an axial hole is provided on the clamping jaw, and the clamping jaw and the interchangeable chuck are rotatably connected through the rotating shaft and the axial hole.

[0008] As a preferred embodiment of the present invention, a material puller for a CNC machine tool, the first clamping surface is a planar structure.

[0009] As a preferred embodiment of the present invention, the second clamping surface is a cambered surface structure.

[0010] As a preferred embodiment of the puller for a CNC machine tool of the utility model, the third clamping surface is a nail surface structure.

[0011] As a preferred material puller for a CNC machine tool of the utility model, the rotating chuck is provided with a pin hole, the clamping jaw is provided with a slidingly connected pin, and the clamping jaw and the rotating chuck are pin-connected through the pin and the pin hole.

[0012] As a preferred puller for a CNC machine tool of the utility model, a connecting plate is provided at the bottom of the pin, a threaded column is provided at the end of the connecting plate away from the pin, a second spring is provided on the column, and the column passes through the clamp and is elastically connected to the clamp via the second spring.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. The utility model adopts the design of rotating chucks, and the puller has three clamping surfaces with different structures, which can adapt to workpieces of various shapes and surface characteristics, such as flat plates, pipes, curved plates and materials with uneven surfaces. This greatly broadens the application scope of the equipment, reduces the downtime due to replacement of clamps, and improves production efficiency. The design of the curved surface structure and the nail surface structure increases the contact area with the workpiece, effectively disperses the pressure, reduces local stress concentration, thereby improving the clamping stability and preventing the workpiece from slipping during the pulling process, especially for pipes, curved plates and materials with uneven surfaces. This design significantly improves the clamping effect and thus improves the pulling efficiency.

[0015] 2. The utility model realizes rotational connection between the rotating chuck and the clamping jaw through the rotating shaft and the shaft hole, and realizes rapid fixing and unlocking through the pin connection structure of the latch and the pin hole. The operator only needs to press the column, rotate the rotating chuck to the required clamping surface and insert the latch into the pin hole under the reset action of the second spring to complete the switching. The whole process is simple and quick.

[0016] 3. The utility model realizes the automatic tightening function of the clamping jaws through a tightening mechanism composed of a pull rod, a joint, a connecting rod and a spring. The spring provides a constant elastic force so that the clamping jaws can automatically adjust the clamping force according to the size of the workpiece, which not only ensures the firmness of the clamping but also avoids damage to the workpiece due to excessive clamping. This adaptive clamping force design is conducive to protecting the workpiece and simplifies the operation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is an exploded view of the utility model;

[0019] Figure 3 It is a top view of the utility model;

[0020] Figure 4 For the utility model Figure 3 Middle AA section;

[0021] Figure 5 This is a schematic diagram of the clamping block structure of the utility model.

[0022] In the figure: 1, fixed seat; 101, sliding hole; 2, clamping claw; 201, shaft hole; 3, tightening mechanism; 310, pull rod; 320, joint; 330, connecting rod; 340, first spring; 4, rotating chuck; 401, rotating shaft; 402, pin hole; 403, first clamping surface; 404, second clamping surface; 405, third clamping surface; 410, latch; 420, connecting plate; 430, column; 431, second spring. DETAILED DESCRIPTION

[0023] See also Figure 1-Figure 5 A material puller for a CNC machine tool comprises a fixed seat 1 and a clamping jaw 2, the clamping jaw 2 is rotatably connected to the fixed seat 1, a tightening mechanism 3 is arranged on the inner end surface of the clamping jaw 2, and a rotating chuck 4 is arranged at the end of the clamping jaw 2;

[0024] The tightening mechanism 3 includes a pull rod 310, a joint 320, a connecting rod 330 and a first spring 340. A sliding hole 101 is provided on the fixed seat 1. The pull rod 310 passes through the sliding hole 101 and is slidably connected thereto. The joint 320 is fixedly installed at the end of the pull rod 310. The connecting rod 330 is rotatably connected to the joint 320. The end of the connecting rod 330 away from the joint 320 is rotatably connected to the middle part of the clamp 2. The first spring 340 is sleeved on the pull rod 310, and the pull rod 310 and the fixed seat 1 are elastically connected through the first spring 340.

[0025] Furthermore, the rotating chuck 4 is an equilateral triangle structure, and the side walls of the rotating chuck 4 are respectively provided with a first clamping surface 403, a second clamping surface 404 and a third clamping surface 405, a rotating shaft 401 is provided at the center of the rotating chuck 4, and an axial hole 201 is provided on the jaw 2, and the jaw 2 and the rotating chuck 4 are rotatably connected through the rotating shaft 401 and the axial hole 201.

[0026] By rotating the rotating chuck 4 so that different clamping surfaces face the middle, the clamping surface that can fit the part can be quickly replaced, which improves the application range of the equipment and eliminates the need to replace the jaws 2, thereby improving production efficiency.

[0027] Furthermore, the first clamping surface 403 is a planar structure.

[0028] The rotating clamping head 4 with a planar structure can meet the clamping requirements of most planar plates.

[0029] Furthermore, the second clamping surface 404 is a curved surface structure.

[0030] The arc surface structure facilitates clamping of pipes and arc-shaped plates, increases the contact area between the material and the clamping jaws 2, thereby improving the clamping stability, preventing the pipe from slipping during the clamping process, and improving the material extraction efficiency.

[0031] Furthermore, the third clamping surface 405 is a nail surface structure.

[0032] The nail surface structure can adapt to materials with different surface convexities and concave surfaces. The nail surface can accurately grasp the grooves on the surface of the material, thereby improving the clamping stability.

[0033] Furthermore, a pin hole 402 is provided on the rotating chuck 4 , and a slidingly connected latch 410 is provided on the clamping jaw 2 . The clamping jaw 2 and the rotating chuck 4 are pin-connected through the latch 410 and the pin hole 402 .

[0034] The clamping jaw 2 and the interchangeable chuck 4 are fixed by inserting the pin 410 into the pin hole 402, thereby preventing the interchangeable chuck 4 from shaking during the clamping process, and the pin-connected structure improves the matching efficiency of the clamping jaw 2 and the interchangeable chuck 4.

[0035] Furthermore, a connecting plate 420 is provided at the bottom of the latch 410 , and a threaded column 430 is provided at the end of the connecting plate 420 away from the latch 410 . A second spring 431 is provided on the column 430 , and the column 430 passes through the clamp 2 and is elastically connected thereto via the second spring 431 .

[0036] The latch 410 can be quickly inserted into the latch 410 under the resetting action of the second spring 431, and the latch 410 can be driven to move downward by pressing the column 430, so that the latch 410 is separated from the pin hole 402, and the clamping claw 2 can be rotated, thereby quickly changing different clamping surfaces, thereby improving the convenience of equipment operation.

[0037] When the material puller is in use, the fixed seat 1 is installed on the power source of the CNC machine tool, such as a cylinder, a hydraulic cylinder, a linear motor, etc., and the column 430 is pressed down according to the shape and surface characteristics of the workpiece to be pulled out, and the rotating chuck 4 is rotated to the corresponding clamping surface. Then, the pin 410 is quickly inserted into the pin hole 402 of the rotating chuck 4 under the action of the spring, and the position of the rotating chuck 4 is locked. The cylinder is started to drive the clamping jaws 2 to move toward the workpiece to be pulled out. When the clamping jaws 2 hit the workpiece to be pulled out, the workpiece to be pulled out is spread open by the center of the two groups of clamping blocks, and then under the resetting action of the first spring 340, the clamping blocks are clamped on the surface of the workpiece. If necessary, the pull rod 310 can be pulled to keep the clamping stable, and the fixed block can be pulled outward to pull the workpiece out under the friction force of the clamping block.

[0038] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A material puller for a numerically controlled machine tool, comprising a fixed seat (1) and a clamping jaw (2), wherein the clamping jaw (2) is rotatably connected to the fixed seat (1), and characterized in that: The inner end surface of the clamping jaw (2) is provided with a tightening mechanism (3), and the end of the clamping jaw (2) is provided with a rotating clamp (4); The tightening mechanism (3) comprises a pull rod (310), a joint (320), a connecting rod (330) and a first spring (340); a sliding hole (101) is provided on the fixed seat (1); the pull rod (310) passes through the sliding hole (101) and is slidably connected thereto; the joint (320) is fixedly mounted on the end of the pull rod (310); the connecting rod (330) is rotatably connected to the joint (320); the end of the connecting rod (330) away from the joint (320) is rotatably connected to the middle part of the clamping claw (2); the first spring (340) is sleeved on the pull rod (310); and the pull rod (310) is elastically connected to the fixed seat (1) via the first spring (340).

2. A material puller for a CNC machine tool according to claim 1, characterized in that: The rotating chuck (4) is an equilateral triangle structure, the side walls of the rotating chuck (4) are respectively provided with a first clamping surface (403), a second clamping surface (404) and a third clamping surface (405), a rotating shaft (401) is provided at the center of the rotating chuck (4), an axial hole (201) is provided on the clamping jaw (2), and the clamping jaw (2) and the rotating chuck (4) are rotatably connected through the rotating shaft (401) and the axial hole (201).

3. A material puller for a CNC machine tool according to claim 2, characterized in that: The first clamping surface (403) is a planar structure.

4. A material puller for a CNC machine tool according to claim 2, characterized in that: The second clamping surface (404) is a curved surface structure.

5. The material puller for a CNC machine tool according to claim 2, characterized in that: The third clamping surface (405) is a nail surface structure.

6. The material puller for a CNC machine tool according to claim 1, characterized in that: The rotating chuck (4) is provided with a pin hole (402), the clamping jaw (2) is provided with a slidingly connected latch pin (410), and the clamping jaw (2) and the rotating chuck (4) are pin-connected via the latch pin (410) and the pin hole (402).

7. A material puller for a CNC machine tool according to claim 6, characterized in that: A connecting plate (420) is provided at the bottom of the latch (410), and a threaded column (430) is provided at the end of the connecting plate (420) away from the latch (410). A second spring (431) is provided on the column (430), and the column (430) passes through the clamp (2) and is elastically connected thereto via the second spring (431).

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