CN114193411A

CN114193411A - Workbench with automatic clamping function

Info

Publication number: CN114193411A
Application number: CN202210099130.XA
Authority: CN
Inventors: 赖玉活; 黄艳; 林伟健; 赖东君; 张树林; 龚英姬; 陈跃; 周迅; 农万华; 陈荣智
Original assignee: Liuzhou Institute of Technology
Current assignee: Liuzhou Institute of Technology
Priority date: 2022-01-25
Filing date: 2022-01-25
Publication date: 2022-03-18
Anticipated expiration: 2042-01-25
Also published as: CN114193411B

Abstract

The invention discloses a workbench with an automatic clamping function, which comprises a rack, wherein a rotary conveyor for sequentially conveying workpieces to a feeding station, a processing station and a discharging station is arranged on the top surface of the rack, and a jig for fixing and moving the workpieces is arranged on the top surface of the conveyor; the processing station is provided with a concave wheel which triggers the jig to clamp the workpiece. Because the work piece need be fixed such as the course of working of polishing in carrying out to avoid reducing the machining precision, through setting up the concave wheel, utilize concave wheel and tool cooperation, can self-holding work piece when making the tool rotary motion to the machining-position, thereby be convenient for process. Compared with the existing workbench, the automatic clamping device disclosed by the invention can automatically clamp the workpiece at a fixed point by utilizing a mechanical structure, replaces the traditional manual operation mode, reduces the labor burden and greatly improves the production efficiency.

Description

Workbench with automatic clamping function

Technical Field

The invention mainly relates to the technical field of workbenches, in particular to a workbench with an automatic clamping function.

Background

The work table is generally dedicated to the production and processing of the object, and mainly provides a support for the object, and the work table individually customized according to the characteristics of the object and the processing characteristics has a certain degree of auxiliary processing capability, such as automatic loading and unloading, but cannot automatically clamp the workpiece during processing, so that the processing process of the workpiece may be moved, and the processing precision is reduced.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a workbench which can automatically clamp a workpiece at a machining station to prevent the workpiece from moving in the machining process and has an automatic clamping function.

In order to solve the technical problems, the invention adopts the following technical scheme:

a workbench with an automatic clamping function comprises a rack, wherein a rotary conveyor for conveying workpieces to a feeding station, a processing station and a discharging station in sequence is mounted on the top surface of the rack, and a jig for fixing and moving the workpieces is arranged on the top surface of the conveyor; and the processing station is provided with a concave wheel for triggering the jig to clamp the workpiece.

As a further improvement of the above technical solution:

the transmitter comprises a power part fixed on the top surface of the frame and used for outputting rotating force and a circular turntable which is fixedly connected with an output shaft of the power part and driven to rotate by the rotating force, and the turntable rotates around a central axis; the jigs are uniformly distributed on the top surface of the turntable around the rotating shaft.

The power part drives the turntable to rotate intermittently, and the rotating angle of each rotating period of the turntable is consistent with the distribution included angle of the jig.

The rotary shaft is formed with a plurality of vertical holes for workpieces to pass through, and a jig is covered on each vertical hole.

The jig comprises a base, wherein a sliding ring is slidably mounted on the top surface of the base, the sliding direction of the sliding ring is perpendicular to the rotating direction of a turntable, and a workpiece slides on the top surface of the base along with the sliding ring and passes through a vertical hole; the slip ring is connected with a pull rod which is used for being matched with the concave wheel and the cam to move the slip ring along the sliding direction; and a spring for resetting the sliding ring is arranged between the sliding ring and the base.

The base is provided with a feed opening, and the feed opening is aligned with the vertical hole; the base comprises a limiting block arranged at the top, and the pull rod penetrates through the limiting block; a lug is formed at one end of the pull rod, which is far away from the slip ring; the spring comprises an outer spring which is sleeved on the pull rod and located between the limiting block and the lug, and the outer spring is extruded and deformed when the sliding ring is far away from the limiting block.

The sliding ring comprises an inner sliding block and an outer sliding block which are connected with the base in a sliding mode, the inner sliding block and the outer sliding block are arranged at intervals along the sliding direction and are connected through an elastic piece; the workpiece is filled in a cavity defined by the inner slide block, the outer slide block and the elastic piece.

One end of the pull rod is connected with the outer sliding block, and the other end of the pull rod is provided with a roller used for matching with the concave wheel.

One side of the concave wheel facing the rotary table is set to be an arc surface, the bending degree of the arc surface is smaller than that of the rotary table, and the roller is pressed after contacting the concave wheel and drives the pull rod to move centripetally.

The grinding machine further comprises a cam which is arranged at the blanking station and used for triggering the jig to loosen the workpiece; one side of the cam, which is far away from the turntable, is provided with a cambered surface, the bending degree of the cambered surface is greater than that of the turntable, and the roller is pulled after contacting the cam and drives the pull rod to move centrifugally; the spring also comprises an inner spring which is sleeved on the pull rod and positioned between the sliding ring and the limiting block, and the inner spring is extruded and deformed when the sliding ring is close to the limiting block.

Compared with the prior art, the invention has the advantages that:

through setting up the conveyer, can accept the work piece from the material loading station and process toward the processing station to transport to the unloading station after processing is accomplished so that the work piece that processing was accomplished breaks away from the conveyer and gets into next production link, greatly liberate the manpower, improved the degree of automation of production. And because the workpiece needs to be fixed in the process of polishing to avoid reducing the processing precision, the concave wheel is arranged, and the concave wheel is matched with the jig, so that the jig can automatically clamp the workpiece when rotating and moving to a processing station, and the processing is convenient. Compared with the existing workbench, the automatic clamping device disclosed by the invention can automatically clamp the workpiece at a fixed point by utilizing a mechanical structure, replaces the traditional manual operation mode, reduces the labor burden and greatly improves the production efficiency.

Drawings

FIG. 1 is a schematic view of a table;

fig. 2 is a schematic structural diagram of the jig.

The reference numerals in the figures denote: 1. a frame; 2. a transmitter; 21. a power section; 22. a turntable; 221. a vertical hole; 3. a jig; 31. a base; 311. a feeding port; 312. a limiting block; 32. a slip ring; 321. an inner slide block; 322. an outer slide block; 323. an elastic member; 33. a pull rod; 331. a bump; 332. a roller; 34. a spring; 341. an outer spring; 342. an inner spring; 4. a concave wheel; 5. a cam.

Detailed Description

The invention will be described in further detail below with reference to the drawings and specific examples.

As shown in fig. 1 and fig. 2, the workbench with the automatic clamping function of the embodiment comprises a frame 1, wherein a rotary conveyor 2 for sequentially conveying workpieces to a feeding station, a processing station and a discharging station is installed on the top surface of the frame 1, and a jig 3 for fixing and moving the workpieces is arranged on the top surface of the conveyor 2; the processing station is provided with a concave wheel 4 which triggers the jig 3 to clamp the workpiece. The loading station refers to a position where a workpiece to be processed is loaded into the jig 3, the processing station refers to a position where the workpiece is processed by external equipment, and the unloading station refers to a position where the processed workpiece is separated from the conveyor 2. Through setting up conveyer 2, can accept the work piece from the material loading station and process toward the processing station to transport to the unloading station after processing is accomplished so that the work piece that processing was accomplished breaks away from conveyer 2 and gets into next production link, greatly liberate the manpower, improved the degree of automation of production. Because the work piece needs fixed in the course of working such as polishing again to avoid reducing machining precision, through setting up concave wheel 4, utilize concave wheel 4 and tool 3 cooperation, can self-holding work piece when making tool 3 rotary motion to machining-position, thereby be convenient for process. Compared with the existing workbench, the automatic clamping device disclosed by the invention can automatically clamp the workpiece at a fixed point by utilizing a mechanical structure, replaces the traditional manual operation mode, reduces the labor burden and greatly improves the production efficiency.

In this embodiment, the transmitter 2 includes a power portion 21 fixed on the top surface of the frame 1 for outputting a rotational force, and a circular turntable 22 fixedly connected to an output shaft of the power portion 21 and driven to rotate by the rotational force, the turntable 22 rotating around a central axis; the jigs 3 are uniformly distributed on the top surface of the turntable 22 around the rotating shaft. The conveyor 2 is arranged as a rotary disc conveyor by providing a turntable 22 to facilitate mounting of the jig 3. In order to obtain the rotating power, a power portion 21 is provided, and the power portion 21 includes a rotating motor, and an output shaft of the rotating motor is fixedly connected with the central axis of the turntable 22, so that the turntable 22 can be driven to rotate around the central axis.

In this embodiment, the power portion 21 drives the rotating disc 22 to intermittently rotate, and the rotation angle of each rotation period of the rotating disc 22 is consistent with the distribution included angle of the jigs 3. The jigs 3 are distributed around the axis of the rotary table 22 at equal intervals, and the rotating angle of each rotating period of the rotary table 22 is consistent with the distribution included angle of the jigs 3, so that the power part 21 is ensured that the jigs 3 stay at all times when the rotary table 22 is driven to rotate for one period, and the loading, processing and unloading are facilitated.

In this embodiment, the turntable 22 is formed with a plurality of vertical holes 221 for the workpiece to pass through around the rotation axis, and a jig 3 is covered on each vertical hole 221. The jig 3 comprises a base 31, a sliding ring 32 is slidably mounted on the top surface of the base 31, the sliding direction of the sliding ring 32 is perpendicular to the rotating direction of the turntable 22, and a workpiece slides on the top surface of the base 31 along with the sliding ring 32 and passes through a vertical hole 221; a pull rod 33 for cooperating with the concave wheel 4 and the cam 5 to move the slip ring 32 is connected to the slip ring 32 along the sliding direction; a spring 34 for restoring the slide ring 32 is provided between the slide ring 32 and the base 31. The base 31 is opened with a feed opening 311, and the feed opening 311 is aligned with the vertical hole 221. By changing the position of the slip ring 32, whether the vertical hole 221 is aligned with the feed opening 311 or not can be controlled, and when the vertical hole 221 is aligned with the feed opening 311, a workpiece can fall, so that feeding is realized. When the two are not aligned, the workpiece is filled in the feed opening 311, but is received by the base 31 at the lower side.

In this embodiment, the base 31 includes a limiting block 312 disposed at the top, and the pull rod 33 penetrates through the limiting block 312; a lug 331 is formed at one end of the pull rod 33, which is far away from the slip ring 32; the spring 34 includes an outer spring 341 sleeved on the pull rod 33 and located between the stopper 312 and the protrusion 331, and the outer spring 341 deforms under compression when the slip ring 32 moves away from the stopper 312. By providing the stopper 312, the moving direction of the pull rod 33 can be always limited to be toward the central axis of the turntable 22, so that the shift of the pull rod 33 is avoided. In addition, because the clamping is controlled by moving the sliding ring 32, in order to enable the sliding ring 32 to automatically reset after leaving the blanking station so as to fill the next workpiece, the pull rod 33 is provided with a bump 331, an outer spring 341 is sleeved on the pull rod 33 between the bump 331 and the limit block 312, when the sliding ring 32 is far away from the limit block 312, the outer spring 341 is extruded and deformed, and when leaving the blanking station, the sliding ring 32 is pushed and reset by the thrust of the spring.

In this embodiment, the slip ring 32 includes an inner slide block 321 and an outer slide block 322 both slidably connected to the base 31, the inner slide block 321 and the outer slide block 322 are disposed at an interval along the sliding direction, and are connected to each other through an elastic member 323; the workpiece is filled in a cavity surrounded by the inner slide block 321, the outer slide block 322 and the elastic element 323. One end of the pull rod 33 is connected with the outer slide block 322, and the other end is provided with a roller 332 used for matching with the concave wheel 4. The side of the concave wheel 4 facing the rotary disc 22 is set to be a cambered surface, the bending degree of the cambered surface is smaller than that of the rotary disc 22, and the roller 332 is pressed after contacting the concave wheel 4 and drives the pull rod 33 to move centripetally. By providing the slide ring 32 with the inner and outer portions, the concave wheel 4 presses the pull rod 33 to push the outer slide block 322 to move relative to the inner slide block 321, thereby clamping the workpiece therebetween.

In this embodiment, the grinding machine further includes a cam 5 disposed at the blanking station and used for triggering the jig 3 to loosen the workpiece. The side of the cam 5 departing from the rotating disc 22 is provided with a cambered surface, the bending degree of the cambered surface is greater than that of the rotating disc 22, and the roller 332 is pulled after contacting the cam 5 and drives the pull rod 33 to move centrifugally. The spring 34 further includes an inner spring 342 sleeved on the pull rod 33 and located between the sliding ring 32 and the stopper 312, and the inner spring 342 is squeezed and deformed when the sliding ring 32 approaches the stopper 312. In order to move the slide ring 32 to align the feed opening 311 with the vertical hole 221 and thereby drop the workpiece, a cam 5 is provided at the feeding station, and the difference in curvature between the cam 5 and the turntable 22 is used to pull the roller 332 into contact with the cam 5, thereby driving the slide ring 32 to move. In order to automatically reset after leaving the blanking station so as to facilitate the filling of the next workpiece, an inner spring 342 is sleeved on the pull rod 33 between the limiting block 312 and the sliding ring 32, and the sliding ring 32 is controlled to reset by the pulling force of the spring.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make numerous possible variations and modifications to the present invention, or modify equivalent embodiments to equivalent variations, without departing from the scope of the invention, using the teachings disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.

Claims

1. The utility model provides a workstation with self-holding function, includes frame (1), its characterized in that: a rotary conveyor (2) for conveying workpieces to a feeding station, a processing station and a discharging station in sequence is mounted on the top surface of the rack (1), and a jig (3) for fixing and moving the workpieces is arranged on the top surface of the conveyor (2); the processing station is provided with a concave wheel (4) which triggers the jig (3) to clamp the workpiece.

2. The work table with automatic clamping function according to claim 1, characterized in that: the transmitter (2) comprises a power part (21) fixed on the top surface of the frame (1) and used for outputting rotating force and a circular turntable (22) fixedly connected with an output shaft of the power part (21) and driven to rotate by the rotating force, and the turntable (22) rotates around a central axis; the jigs (3) are uniformly distributed on the top surface of the turntable (22) around the rotating shaft.

3. The work table with automatic clamping function according to claim 2, characterized in that: the power part (21) drives the turntable (22) to intermittently rotate, and the rotating angle of each rotating period of the turntable (22) is consistent with the distribution included angle of the jig (3).

4. The work table with automatic clamping function according to claim 3, characterized in that: the rotary table (22) is provided with a plurality of vertical holes (221) for workpieces to pass through around the rotary shaft, and a jig (3) is covered on each vertical hole (221).

5. The work table with automatic clamping function according to claim 4, characterized in that: the jig (3) comprises a base (31), a sliding ring (32) is installed on the top surface of the base (31) in a sliding mode, the sliding direction of the sliding ring (32) is perpendicular to the rotating direction of the turntable (22), and a workpiece slides on the top surface of the base (31) along with the sliding ring (32) and passes through a vertical hole (221); the sliding ring (32) is connected with a pull rod (33) which is used for being matched with the concave wheel (4) and the cam (5) to move the sliding ring (32) along the sliding direction; and a spring (34) for resetting the sliding ring (32) is arranged between the sliding ring (32) and the base (31).

6. The work table with automatic clamping function according to claim 5, characterized in that: the base (31) is provided with a feed opening (311), and the feed opening (311) is aligned with the vertical hole (221); the base (31) comprises a limiting block (312) arranged at the top, and the pull rod (33) penetrates through the limiting block (312); a lug (331) is formed at one end of the pull rod (33) departing from the sliding ring (32); the spring (34) comprises a pull rod (33) and an outer spring (341) positioned between the limiting block (312) and the bump (331), and the outer spring (341) is extruded and deformed when the sliding ring (32) is far away from the limiting block (312).

7. The work table with automatic clamping function according to claim 6, characterized in that: the slip ring (32) comprises an inner slide block (321) and an outer slide block (322) which are connected with the base (31) in a sliding mode, the inner slide block (321) and the outer slide block (322) are arranged at intervals along the sliding direction and are connected through an elastic piece (323); the workpiece is filled in a cavity surrounded by the inner sliding block (321), the outer sliding block (322) and the elastic piece (323).

8. The work table with automatic clamping function according to claim 7, characterized in that: one end of the pull rod (33) is connected with the outer sliding block (322), and the other end of the pull rod is provided with a roller (332) used for matching with the concave wheel (4).

9. The work table with automatic clamping function according to claim 8, characterized in that: one side of the concave wheel (4) facing the rotary table (22) is set to be an arc surface, the bending degree of the arc surface is smaller than that of the rotary table (22), and the roller (332) is pressed after contacting the concave wheel (4) and drives the pull rod (33) to move centripetally.

10. The work table with automatic clamping function according to claim 9, characterized in that: the grinding machine also comprises a cam (5) which is arranged at the blanking station and used for triggering the jig (3) to loosen the workpiece; one side of the cam (5) departing from the rotary disc (22) is provided with an arc surface, the bending degree of the arc surface is greater than that of the rotary disc (22), and the roller (332) is pulled and drives the pull rod (33) to move centrifugally after contacting the cam (5); the spring (34) further comprises an inner spring (342) which is sleeved on the pull rod (33) and located between the sliding ring (32) and the limiting block (312), and when the sliding ring (32) is close to the limiting block (312), the inner spring (342) is extruded and deformed.