Clamping structure of multi-station cold header

Abstract

The invention discloses a clamping structure of a multi-station cold header. Comprising a material clamping box, a clamp assembly installed at the front end of the material clamping box, and a clamp opening assembly installed in the material clamping box and used for driving the clamp assembly to act. The cam assembly is installed in the material clamping box and used for pushing the clamp opening assembly to act, the material removing air cylinder is installed at the top of the material clamping box, and an air cylinder shaft of the material removing air cylinder makes contact with the material clamping assembly. Through cooperation of the clamp opening assembly and the clamp opening swing arm of the clamp assembly, opening and closing of a clamp can be rapidly achieved, cut materials and short materials can be rapidly removed by driving one clamp opening lever through the material removing air cylinder, and the effect that the clamp opening and closing flexibility is improved through a simple structure is achieved; in addition, the clamp assembly can be quickly replaced, and the moving effect can be achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of cold heading machines, and more specifically to a material clamping structure of a multi-station cold heading machine. Background Art

[0002] Cold heading machines are special equipment mainly used for batch production of nuts, bolts and other fasteners. In the production process, the steel wire material needs to be continuously conveyed, and then clamped and cold headed. The cold heading process exerts great pressure on the material. Once the clamping of the material is unstable, it will cause production errors. Therefore, there are various clamps on the market, such as a clamp mechanism and a cold heading machine using the clamp mechanism disclosed in a Chinese patent (2016205566566), and the clamps disclosed in the technical solution have the problems of complex structure, inconvenient assembly and insufficient flexibility in adjustment. Summary of the invention

[0003] The main purpose of the present invention is to provide a multi-station cold heading machine clamping structure which can improve the opening and closing efficiency and the adjustment flexibility.

[0004] The technical solution adopted by the present invention is: a multi-station cold heading machine clamping structure, including a clamping box, a clamping assembly installed at the front end of the clamping box, an opening clamping assembly installed inside the clamping box for driving the clamping assembly to move, a cam assembly installed in the clamping box for pushing the opening clamping assembly to move, and a material-picking cylinder installed on the top of the clamping box and whose cylinder shaft is in contact with the clamping assembly.

[0005] The material clamping box comprises a cover plate and two side plates connected in parallel to the rear side of the cover plate.

[0006] The clamp assembly can be movably installed on the front end of the material clamping box through a sliding assembly.

[0007] The sliding assembly includes two stacked guide plates and a sliding block. A T-shaped sliding groove is defined below the two guide plates, and the sliding block is installed in the T-shaped sliding groove through a locking gasket.

[0008] The clamp assembly includes a slide plate fixed to the slider and at least two clamps. The two clamps are installed on the front side of the slide plate through a top shaft movably inserted in the slide plate and two clamp opening swing arm shafts. Each clamp opening swing arm shaft located on the rear side of the slide plate is connected to a clamp opening swing arm with a pulley.

[0009] The clamping assembly includes a clamping lever pin rotatably connected between the two side plates, a plurality of clamping levers with pulleys sleeved on the clamping lever pin, and a connecting rod fixed between the two side plates and located below the clamping levers, a spring is arranged between the connecting rod and each clamping lever, and two clamping levers are in contact with the two clamping swing arms respectively.

[0010] The cam assembly comprises a power camshaft rotatably connected between the two side plates and a cam mounted on the camshaft and in contact with each of the clamping levers.

[0011] The material-removing cylinder is installed on the top end of the cover plate, and the cylinder shaft of the material-removing cylinder is in contact with one of the clamping levers.

[0012] The beneficial effects of the present invention are: The opening and closing of the clamp can be quickly realized by cooperating with the opening and closing swing arm of the clamp assembly of the present invention, and the cut materials and short materials can be quickly removed by driving one of the opening and closing levers through the material removal cylinder, thereby improving the flexibility of opening and closing the clamp with a simple structure, and the clamp assembly of the present invention can also be quickly replaced and moved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional schematic diagram of the present invention.

[0014] Figure 2 This is a schematic diagram of the present invention after removing one side plate.

[0015] Figure 3 This is a three-dimensional schematic diagram of the present invention after removing the side panels and the sliding plate. DETAILED DESCRIPTION

[0016] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Preferred embodiments of the present invention are provided in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0017] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0019] Please refer to Figures 1 to 3 , a multi-station cold heading machine clamping structure provided by the present invention includes a clamping box 10, a clamping assembly 20 installed at the front end of the clamping box 10, an opening clamping assembly 30 installed inside the clamping box 10 for driving the clamping assembly 20 to move, a cam assembly 40 installed in the clamping box 10 for pushing the opening clamping assembly 30 to move, and a material-removing cylinder 50 installed on the top of the clamping box 10 and whose cylinder shaft is in contact with the clamping assembly 30. When the cam assembly 40 rotates, the opening clamping assembly 30 is driven to move through the cam, and then the opening clamping assembly 30 drives the clamping assembly 20 to clamp or release.

[0020] In this embodiment, the material clamping box 10 includes a cover plate 11 and two side plates 12 connected in parallel to the rear side of the cover plate 11 .

[0021] In this embodiment, the clamp assembly 20 can be movably installed at the front end of the clamp box 10, that is, the rear side of the cover plate 11, through the sliding assembly 60, so as to facilitate the replacement or assembly of the clamp assembly at any time and increase the convenience of installation.

[0022] In this embodiment, the sliding assembly 60 includes two stacked guide plates 61 and a slider 62. A T-shaped slot 63 is defined below the two guide plates 61. The T-shaped slot 63 is installed in the T-shaped slot 131 through a positioning gasket 64 to enable the slider 62 to slide in the T-shaped slot without falling.

[0023] In this embodiment, the clamp assembly 20 includes a slide plate 21 fixed to the slider 62 and at least two clamps 22. The two clamps 22 are installed on the front side of the slide plate 21 through a top shaft 23 and two clamp opening swing arm shafts 24 that are movably inserted in the slide plate 21. Each clamp opening swing arm shaft 24 located on the rear side of the slide plate 21 is connected to an clamp opening swing arm 25 with a pulley. When an external force drives the clamp opening swing arm 25, the rotation of the clamp opening swing arm shaft 24 activates the action of the clamp 22, such as clamping or loosening.

[0024] It is worth mentioning that the clip assembly 20 also includes a spring support plate fixed to the front side door of the cover plate 11, and a spring is arranged between the spring support plate and the clip so that the clip has a restoring force to return to its initial state after opening. The clip is a conventional technical means in this field, and the form of the spring can also be various, such as a tension spring or a butterfly spring. The description of the clip here is for technical personnel in this field to better understand the main purpose of the present invention. The shape or structure of the clip is not the focus of the present invention, so the structure of the clip is not described in detail.

[0025] In this embodiment, the clamping assembly 30 includes an clamping lever pin 31 rotatably connected between the two side plates 12, a plurality of clamping levers 32 with pulleys sleeved on the clamping lever pin 31, and a connecting rod 33 fixed between the two side plates 12 and located below the clamping lever 32. A spring 34 is arranged between the connecting rod 33 and each clamping lever 32, wherein the two clamping levers 32 are in contact with the two clamping swing arms 25 respectively, so as to actuate the clamping swing arms 25 to rotate through the clamping levers 32, thereby achieving the effect of opening and closing the clamps.

[0026] It is worth noting here that the pulleys of the clamping swing arm 25 with pulleys and the clamping lever 32 with pulleys are facing the force-applying party. People skilled in the art know how to place the additional pulleys to reduce friction and improve the swinging efficiency.

[0027] In this embodiment, the cam assembly 40 includes a power camshaft 41 rotatably connected between the two side plates 12 and a cam 42 installed on the camshaft 41 and in contact with each of the clamping levers 32. The power camshaft 41 is connected to the power source and rotates, and each clamping lever 32 is actuated to swing by the cam 42, so as to achieve the effect of actuating the clamping swing arm 25 to rotate by the clamping lever 32.

[0028] The material-ejecting cylinder 50 is installed at the top of the cover plate 11 , and the cylinder shaft of the material-ejecting cylinder 50 contacts one of the clamping levers 32 to drive the clamping lever 32 to contact the clamping swing arm 25 , thereby achieving the effect of clamping and material-ejecting through the clamping swing arm 25 .

[0029] What the present invention aims to achieve is that the opening and closing of the clamp can be quickly achieved through the cooperation between the clamp opening assembly of the present invention and the clamp opening and closing swing arm of the clamp assembly, and the cut materials and short materials can be quickly removed by driving one of the clamp opening and closing levers through the material removal cylinder, thereby achieving the effect of improving the flexibility of opening and closing the clamp with a simple structure, and the clamp assembly of the present invention can also be quickly replaced and moved.

[0030] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A multi-station cold heading machine clamping structure, characterized in that: It includes a clamping box, a clamping assembly installed at the front end of the clamping box, an opening clamping assembly installed inside the clamping box for driving the clamping assembly to move, a cam assembly installed in the clamping box for pushing the opening clamping assembly to move, and a material-removing cylinder installed on the top of the clamping box and whose cylinder shaft is in contact with the clamping assembly.

2. A multi-station cold heading machine clamping structure as claimed in claim 1, characterized in that: The material clamping box comprises a cover plate and two side plates connected in parallel to the rear side of the cover plate.

3. A multi-station cold heading machine clamping structure as claimed in claim 2, characterized in that: The clamp assembly can be movably installed on the front end of the material clamping box through a sliding assembly.

4. A multi-station cold heading machine clamping structure as claimed in claim 3, characterized in that: The sliding assembly includes two stacked guide plates and a sliding block. A T-shaped sliding groove is defined below the two guide plates, and the sliding block is installed in the T-shaped sliding groove through a locking gasket.

5. A multi-station cold heading machine clamping structure as claimed in claim 4, characterized in that: The clamp assembly includes a slide plate fixed to the slider and at least two clamps. The two clamps are installed on the front side of the slide plate through a top shaft movably inserted in the slide plate and two clamp opening swing arm shafts. Each clamp opening swing arm shaft located on the rear side of the slide plate is connected to a clamp opening swing arm with a pulley.

6. A multi-station cold heading machine clamping structure as claimed in claim 5, characterized in that: The clamping assembly includes a clamping lever pin rotatably connected between the two side plates, a plurality of clamping levers with pulleys sleeved on the clamping lever pin, and a connecting rod fixed between the two side plates and located below the clamping levers, a spring is arranged between the connecting rod and each clamping lever, and two clamping levers are in contact with the two clamping swing arms respectively.

7. A multi-station cold heading machine clamping structure as claimed in claim 6, characterized in that: The cam assembly comprises a power camshaft rotatably connected between the two side plates and a cam mounted on the camshaft and in contact with each of the clamping levers.

8. A multi-station cold heading machine clamping structure as claimed in claim 7, characterized in that: The material-removing cylinder is installed on the top end of the cover plate, and the cylinder shaft of the material-removing cylinder is in contact with one of the clamping levers.

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