CN113620051A

CN113620051A - Constant-pressure pneumatic clamp

Info

Publication number: CN113620051A
Application number: CN202111051016.1A
Authority: CN
Inventors: 孙素海; 程西伟; 方杰; 李海峰
Original assignee: Anhui Zhongjia Automation Technology Co ltd
Current assignee: Anhui Zhongjia Automation Technology Co ltd
Priority date: 2021-08-13
Filing date: 2021-09-08
Publication date: 2021-11-09
Anticipated expiration: 2041-09-08
Also published as: CN113620051B

Abstract

The invention discloses a constant-pressure pneumatic clamp which comprises a rack main body, wherein a pressure seat is fixed at the top of the rack main body, the middle of the rack main body is connected with a rotating frame through a rotating shaft, a pressure seat is installed at the top end of the rotating frame, a pressure head pressed on the upper surface of the pressure seat is arranged at the bottom of the pressure seat, a pressure sensor abutted against the top of the pressure head is installed in the pressure seat, an air cylinder is installed at the bottom of the rack main body, a piston rod at the top end of the air cylinder is connected with a rack, and the rack is meshed with a gear on the rotating shaft. According to the invention, the pressure sensor is integrated at the pressure head part, and the pressure of the pressure head on the plate material is fed back, so that the pressure is controlled, and the plate material is well protected; the gear rack transmission mechanism is adopted, a larger rotating space is provided for the pressure head, the whole structure of the clamp is kept below the surface of the conveying table top when the clamp is not needed, the conveying work on the surface of the conveying table top is not influenced, the structure is simplified, and the conveying of plates is not hindered.

Description

Constant-pressure pneumatic clamp

Technical Field

The invention relates to the field of tool fixtures, in particular to a constant-pressure pneumatic fixture.

Background

On a plate processing production line, a clamp is usually required on the production line for conveying and processing the plate, so that the plate is always kept at a correct position in the conveying and processing processes. In many cases, the thickness of the processed sheet is small, which may cause deformation of the sheet if the pressure of the clamp is too high, and may cause change of the relative position of the sheet during transportation and processing if the pressure of the clamp is too low. In the existing automatic fixture for the production line, a cylinder piston drives a movable guide rod four-bar mechanism to move, a pressure head is fixed on a connecting rod, and the pressing and the loosening of a plate are realized. But without force control, the impact on the plate material is easy to occur, so that indentation and even deformation occur.

The common fixture is driven by a four-bar mechanism of a movable guide rod, a pressure head is fixed on a connecting rod of the four-bar mechanism, and a piston rod of a cylinder moves up and down to drive the connecting rod to rotate, so that clamping and loosening actions are realized. Usually, the horizontal position of the connecting rod is pressed, and the connecting rod is in a tilting state when the clamp is not used, namely the connecting rod is higher than the surface of the plate conveying table. However, in the production line of the plate, the surface of the conveying table is required to be kept flat, so that the plate can be conveniently moved, and therefore, the clamp is not suitable for the plate production line.

Disclosure of Invention

The invention provides a fixed pressure pneumatic clamp, which is characterized in that a pressure sensor is integrated in a pressure head part and used for sensing the pressure applied by the pressure head to a plate, the movement of a cylinder is controlled through a feedback pressure signal, the pressure applied to the plate is ensured to be moderate, and meanwhile, a gear and rack transmission structure is adopted, so that a rotating frame can have a large-angle rotating space, and when the clamp is not used, the rotating frame and the pressure head part can rotate to the position below the surface of a conveying table surface, so that the conveying of the plate is not hindered, and the problems in the background art are solved.

In order to achieve the purpose, the invention is realized by the following technical scheme: a constant-pressure pneumatic clamp comprises a rack main body, wherein a pressure seat is fixed at the top of the rack main body, the middle of the rack main body is connected with a rotating frame through a rotating shaft, a pressure seat is installed at the top end of the rotating frame, a pressure head pressed on the upper surface of the pressure seat is arranged at the bottom of the pressure seat, and a pressure sensor abutting against the top of the pressure head is installed in the pressure seat;

the cylinder is installed to the bottom of frame main part, and the piston rod on cylinder top is connected with the rack, rack and the epaxial gear engagement of pivot.

The frame main body comprises a lower frame and an upper frame, a partition plate at the bottom of the upper frame is connected with the lower frame through a bolt, the air cylinder is installed on the inner side of the lower frame, the pressing seat is fixed at the top of the upper frame, two ends of the rotating shaft are respectively connected with two side plates of the upper frame through bearings, and the gear is connected to the middle of the rotating shaft in a key mode.

Further inject, the both ends of pivot are square, the one side of swivel mount bottom keeping away from the pressure head seat has the pressure strip that the countershaft was pressed from both sides tightly through bolted connection.

Further limit, the upper surface of baffle is installed through the bolt and is kept away from the slide of the one side support direction of gear to the rack.

Further inject, the chamber that holds has been seted up at the top of pressure head seat, the bottom of pressure head runs through the below that holds the chamber and extend to pressure head seat, and the limiting plate on pressure head top is located and holds the intracavity, pressure sensor inlays to be located and holds the intracavity and offsets with the limiting plate, and the upper surface of pressure head seat is installed through the bolt and is being connected with the sensor fixed plate to holding the confined sensor fixed plate in chamber, pressure sensor passes through the screw.

Further limiting, the pressure head seat is connected with the top of one side of the rotating frame, which is far away from the rotating shaft, through a bolt.

The invention has the following beneficial effects: according to the invention, the pressure sensor is integrated at the pressure head part, and the pressure of the pressure head on the plate material is fed back, so that the pressure is controlled, and the plate material is well protected; the gear rack transmission mechanism is adopted, a larger rotating space is provided for the pressure head, the whole structure of the clamp is kept below the surface of the conveying table top when the clamp is not needed, the conveying work on the surface of the conveying table top is not influenced, the structure is simplified, and the conveying of plates is not hindered.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the engagement of the gear and rack of the present invention;

FIG. 3 is a schematic view of the gear mounting of the present invention;

FIG. 4 is a schematic view of a ram of the present invention;

FIG. 5 is a cross-sectional view of the indenter of the present invention;

fig. 6 is a schematic view of the working state of the present invention.

In the figure: 1. an upper frame; 2. a lower frame; 3. a partition plate; 4. pressing a base; 5. a press head seat; 6. a sensor fixing plate; 7. a rotating frame; 8. a rack; 9. a gear; 10. a compression plate; 11. a slide base; 12. a cylinder; 13. a rotating shaft; 14. a pressure head; 15. a pressure sensor; 16. and a bearing.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, the present invention provides a technical solution: a fixed-pressure pneumatic clamp comprises a rack main body, wherein a pressure seat 4 is fixed at the top of the rack main body, the middle of the rack main body is connected with a rotating frame 7 through a rotating shaft 13, the pressure seat 5 is connected with the top of one side, far away from the rotating shaft 13, of the rotating frame 7 through a bolt, a pressure head 14 pressed with the upper surface of the pressure seat 4 is arranged at the bottom of the pressure seat 5, the rotating frame 7 is driven by the rotating shaft 13 to rotate, so that a plate is clamped and loosened by the pressure head 14, and a pressure sensor 15 abutted against the top of the pressure head 14 is installed in the pressure seat 5;

the cylinder 12 is installed to the bottom of frame main part, and the piston rod on cylinder 12 top is connected with rack 8, and rack 8 meshes with the gear 9 on the pivot 13.

Referring to fig. 1 and 2, the frame main body comprises a lower frame 2 and an upper frame 1, a partition plate 3 at the bottom of the upper frame 1 is connected with the lower frame 2 through a bolt, a cylinder 12 is installed on the inner side of the lower frame 2, a pressing seat 4 is fixed on the top of the upper frame 1, two ends of a rotating shaft 13 are respectively connected with two side plates of the upper frame 1 through a bearing 16, and a gear 9 is in key connection with the middle of the rotating shaft 13.

Referring to 3, both ends of the rotating shaft 13 are square, one side of the bottom of the rotating frame 7, which is far away from the pressure head seat 5, is connected with a pressure plate 10 which clamps the rotating shaft 13 through a bolt, matched V-shaped grooves are formed in the pressure plate 10 and the rotating frame 7, the V-shaped grooves are clamped and fastened with both ends of the rotating shaft 13 through the fastening action of the bolt, and the rotating frame 7 is installed.

Referring to fig. 1, the upper surface of the partition plate 3 is provided with a sliding seat 11 for supporting and guiding one side of the rack 8 far away from the gear 9 through a bolt, and the sliding seat 11 can support one side of the rack 8 far away from the gear 9, so that the rack 8 is prevented from deforming, and meanwhile, the stability of the gear 9 and the rack 8 in the meshing operation process is also ensured.

Referring to fig. 4 and 5, the top of pressure head seat 5 has been seted up and has been held the chamber, and the bottom of pressure head 14 runs through and holds the chamber and extend to the below of pressure head seat 5, and the limiting plate on pressure head 14 top is located and holds the intracavity, and pressure sensor 15 inlays to be located and holds the intracavity and offset with the limiting plate, and the upper surface of pressure head seat 5 is installed through the bolt and is being held chamber confined sensor fixed plate 6, and pressure sensor 15 passes through the screw and is connected with sensor fixed plate 6.

Referring to fig. 6, when the piston rod of the cylinder 12 moves upward, the rack 8 moves upward to drive the gear 9 to rotate, the gear 9 drives the rotating shaft 13 to rotate clockwise, meanwhile, the rotating frame 7 rotates clockwise, and the pressure head 14 is close to the pressure seat 4, so that the plate material is clamped;

when the pressure head 14 contacts the sheet, the pressure head 14 extrudes the pressure sensor 15, so that the pressure in the compaction process is measured, and the piston feeding of the air cylinder 12 is stopped when a preset pressure value is reached;

when the piston moves downwards, the rack 8 moves downwards, the gear 9 drives the shaft 13 to rotate anticlockwise, the rotating frame 7 rotates anticlockwise, and the pressure head 14 is far away from the pressure seat 4, so that the plate is loosened;

the upper surface of the pressing seat 4 coincides with the surface of the conveying table, and the rotating frame 7 and the pressing head 14 are both positioned below the surface of the pressing seat 4 when the clamping device is loosened, namely the whole clamp structure is positioned below the surface of the conveying table.

The pressure sensor 15 is integrated at the pressure head part, and the pressure of the pressure head 14 on the plate is fed back, so that the pressure is controlled, and the plate is well protected; the transmission mechanism of the gear 9 and the rack 8 is adopted, so that a larger rotating space is provided for the pressure head 14, the whole structure of the clamp is kept below the surface of the conveying table surface when the clamp is not needed, the conveying work on the surface of the conveying table surface is not influenced, the structure is simplified, and the conveying of plates is not hindered.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a level pressure pneumatic fixture, includes the frame main part, its characterized in that: a pressure seat (4) is fixed at the top of the rack main body, the middle of the rack main body is connected with a rotating frame (7) through a rotating shaft (13), a pressure head seat (5) is installed at the top end of the rotating frame (7), a pressure head (14) in press fit with the upper surface of the pressure seat (4) is arranged at the bottom of the pressure head seat (5), and a pressure sensor (15) abutting against the top of the pressure head (14) is installed in the pressure head seat (5);

the cylinder (12) is installed to the bottom of frame main part, and the piston rod on cylinder (12) top is connected with rack (8), gear (9) meshing on rack (8) and pivot (13).

2. A constant pressure pneumatic jig as defined in claim 1, wherein: the frame main part includes lower frame (2) and upper frame (1), and baffle (3) of upper frame (1) bottom are connected with lower frame (2) through the bolt, cylinder (12) are installed in the inboard of lower frame (2), press seat (4) to be fixed in the top of upper frame (1), the both ends of pivot (13) are connected with the both sides board of upper frame (1) through bearing (16) respectively, gear (9) key-type is in the middle part of pivot (13).

3. A constant-pressure pneumatic jig as claimed in claim 2, wherein: the two ends of the rotating shaft (13) are square, and one side of the bottom of the rotating frame (7), which is far away from the pressure head seat (5), is connected with a pressure plate (10) which clamps the rotating shaft (13) through a bolt.

4. A constant-pressure pneumatic jig as claimed in claim 2, wherein: and a sliding seat (11) for supporting and guiding one side of the rack (8) far away from the gear (9) is arranged on the upper surface of the partition plate (3) through a bolt.

5. A constant pressure pneumatic jig as defined in claim 1, wherein: the top of pressure head seat (5) has been seted up and has been held the chamber, the bottom of pressure head (14) runs through and holds the chamber and extend to the below of pressure head seat (5), and the limiting plate on pressure head (14) top is located and holds the intracavity, pressure sensor (15) inlay to be located and hold the intracavity and offset with the limiting plate, and the upper surface of pressure head seat (5) is installed through the bolt and is being held chamber confined sensor fixed plate (6), pressure sensor (15) are connected with sensor fixed plate (6) through the screw.

6. A constant pressure pneumatic jig as defined in claim 5, wherein: the press head seat (5) is connected with the top of one side, far away from the rotating shaft (13), of the rotating frame (7) through a bolt.