Closed high-temperature-resistant pneumatic clamp suitable for hot stamping production line
By designing a closed high -temperature gas -resistant pneumatic clamp, the problem of stagnation and insulation effects of pneumatic clamps in the existing technologies in high temperature and dust environment has been solved, and higher dust and thermal insulation performance are realized. It improved production efficiency and service life, and enhanced the applicability of the product.
Patent Information
- Application Number
- CN202421248854.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-03
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-06-03
AI Technical Summary
When existing pneumatic clamps work in high temperature and high dust environments, they are prone to stagnation due to metal dust entering the interior, affecting production efficiency. Due to the open structure and poor thermal insulation effect, lubricating grease sintering and sealing ring failure. The strength of the parts is reduced, and the opening angle of the clamp is fixed, which makes the suitability poor.
A closed high-temperature resistant pneumatic clamp is designed. The opening or closing of the clamp body is controlled by the cylinder, and the opening angle of the clamp body can be adjusted. The shell closed structure is used to improve the dustproof and heat insulation performance. The clamp The main body and the cylinder are connected through a U-shaped seat, which is easy to disassemble and assemble.
Effectively prevent metal dust from entering the interior of the clamping clamping, ensure exercise performance, avoid lubricating oil sintering and mechanical parts of the mechanical parts, improve the service life and production efficiency of clamps, and improve the applicability of the product.
Smart Images
Figure CN222370180U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of automobile manufacturing, and in particular to a closed high-temperature resistant pneumatic clamp suitable for a hot stamping production line, which is used for a robot or a mechanical arm on a hot stamping automated production line to automatically clamp and release a sheet. Background Art
[0002] With the continuous improvement of the degree of automation in automobile production plants, especially the emergence of multi-station automated production lines, it has become a trend to use robots or mechanical arms to replace manual operations. In order to improve production efficiency, it is necessary to install end pickers on robots or mechanical arms to quickly pick up sheets. Pneumatic clamps are one of the end pickers. At present, in the face of increasingly sophisticated production processes, the working environment of automated production lines has become more demanding. Taking the hot stamping production line as an example, the steel plate needs to be heated to a red-hot state (≥950℃), and the surface of the steel plate in the red-hot state is prone to oxides, which are then accompanied by a large amount of metal dust particles. In other words, pneumatic clamps need to work in a high temperature and high dust environment, which puts higher requirements on the working stability of pneumatic clamps.
[0003] However, the pneumatic clamps currently on the market usually adopt a fully open structure. The upper and lower arms of the pneumatic clamps need to work together to complete the clamping or loosening action. Due to the harsh working conditions, metal dust in the air will enter the cam curve grooves on the upper and lower arms. As time goes by, a large amount of metal dust enters the cam curve groove, which will cause the movement of the pneumatic clamp to become more and more stuck. At this time, the line needs to be stopped for cleaning, which seriously affects production efficiency. In addition, since the pneumatic clamp adopts a fully open structure, the heat insulation effect is poor. When the temperature of the pneumatic clamp reaches a certain limit, the lubricating grease inside the clamp will sinter to varying degrees, the pneumatic sealing ring will gradually fail, and some mechanical parts in the clamp will also lose strength due to high temperature. Furthermore, the opening angles between the upper and lower arms of the pneumatic clamps are fixed values and are not adjustable. When the specifications of the sheets are different, the opening angles of the original pneumatic clamps may no longer be applicable. In this case, it is necessary to replace them with new pneumatic clamps with different opening angles, and the product has poor applicability. Utility Model Content
[0004] The present application provides a closed high-temperature resistant pneumatic clamp suitable for hot stamping production lines to overcome the above-mentioned problems existing in the prior art. The closed high-temperature resistant pneumatic clamp suitable for hot stamping production lines of the present application is controlled by a cylinder to open or close the clamp body, which is easy to operate, and the opening angle of the clamp body can be adjusted to adapt to sheets of different specifications, and the product has high applicability; and a shell is arranged on the outside of the cylinder and the clamp body to form a closed structure, so that the pneumatic clamp has excellent dustproof and heat-insulating properties, which can effectively prevent metal dust in the air from entering the inside of the clamp, ensure that the movement performance of the pneumatic clamp is not affected, and eliminate the work of stopping the line for cleaning, thereby ensuring production efficiency, and can also avoid the phenomenon of sintering of lubricating grease inside the pneumatic clamp, and at the same time prevent some mechanical parts inside the pneumatic clamp from experiencing strength reduction due to high temperature; in addition, the clamp body and the cylinder are connected through a U-shaped seat, which is convenient for disassembly and assembly, and is conducive to later maintenance.
[0005] The technical solution of the present application is: a closed high-temperature resistant pneumatic clamp suitable for hot stamping production lines, comprising a shell; a cylinder and a U-shaped seat are arranged inside the shell; the piston rod of the cylinder passes through the through hole on the U-shaped seat and is connected with the clamp body; the clamp body comprises an upper clamp arm and a lower clamp arm that are rotatably connected; the end of the upper clamp arm extends out of the shell and is provided with an upper clamp head; the end of the lower clamp arm extends out of the shell and is provided with a lower clamp head; the upper clamp head and the lower clamp head are relatively distributed; a sliding column is provided at the end of the piston rod, and correspondingly, a strip groove and a cam curve groove are respectively opened on the upper clamp arm and the lower clamp arm; the two ends of the sliding column cooperate with the strip groove and the cam curve groove respectively, and can slide in the strip groove and the cam curve groove; when in use, the cylinder is started to extend or retract the piston rod, drive the lower clamp arm to rotate relative to the upper clamp arm, so as to drive the lower clamp head to move up or down, thereby realizing the closing or opening of the clamp body.
[0006] Compared with the prior art, the closed high-temperature resistant pneumatic clamp suitable for hot stamping production lines of the present application includes a cylinder and a clamp body, and the cylinder controls the opening or closing of the clamp body, which is easy to operate. When facing sheets of different specifications, the opening angle of the clamp body can be adjusted by changing the telescopic length of the cylinder piston rod, which effectively improves the product applicability of the pneumatic clamp, and the clamp body and the cylinder are connected by a U-shaped seat, which is convenient for disassembly and assembly, and is conducive to later maintenance; in addition, a shell is arranged on the outside of the cylinder and the clamp body to form a closed structure, so that the pneumatic clamp has excellent dustproof and heat-insulating properties, which can effectively prevent metal dust in the air from entering the inside of the clamp, ensure that the movement performance of the pneumatic clamp is not affected, and eliminate the work of stopping the line for cleaning, thereby ensuring production efficiency; and due to the improvement of the heat insulation performance, the sintering of the lubricating grease inside the pneumatic clamp can also be avoided, and at the same time, the strength of some mechanical parts inside the pneumatic clamp is effectively prevented from decreasing due to high temperature, thereby improving the service life of the pneumatic clamp.
[0007] As an optimization, in the aforementioned closed high temperature resistant pneumatic clamp suitable for hot stamping production line, the clamping surfaces of the upper clamp head and the lower clamp head are respectively provided with serration structures. Thus, the friction between the upper clamp head and the lower clamp head and the sheet can be increased to improve the clamping ability of the clamp body to the sheet and prevent the sheet from falling.
[0008] As an optimization, in the aforementioned closed high temperature resistant pneumatic clamp suitable for hot stamping production line, the upper clamp arm is provided with an A clearance groove, and part of the upper clamp head is located in the A clearance groove; the lower clamp arm is provided with a B clearance groove, and part of the lower clamp head is located in the B clearance groove. Therefore, under the condition of ensuring the spacing between the upper and lower clamp heads, the upper and lower clamp heads can be designed to be thicker to improve the clamp head strength.
[0009] As an optimization, in the aforementioned closed high temperature resistant pneumatic clamp suitable for hot stamping production line, the cylinder is provided with a mounting plate for connecting with the manipulator, and the connection of the mounting plate is a ball head structure. The design of the ball head structure allows the pneumatic clamp of the present application to rotate in any direction during installation, thereby facilitating the position adjustment when the pneumatic clamp is connected to the manipulator, and the assembly flexibility is high.
[0010] As an optimization, in the aforementioned closed high-temperature resistant pneumatic clamp suitable for hot stamping production lines, a guide groove is respectively provided on the two side plates of the U-shaped seat; the two ends of the sliding column are respectively located in the two guide grooves and can slide in the guide grooves. At this time, when the piston rod moves, it will drive the two ends of the sliding column to slide in the guide grooves on both sides, which can prevent the sliding column from tilting during movement. Furthermore, a wear-resistant plate is provided between the side plate and the shell. The provision of the wear-resistant plate can avoid direct contact between the sliding column and the inner wall of the shell, reduce the friction force when the sliding column slides, reduce friction loss, and extend the service life of the sliding column. In addition, only the wear-resistant plate needs to be replaced during later maintenance, and the maintenance cost is low.
[0011] As an optimization, in the aforementioned closed high temperature resistant pneumatic clamp suitable for hot stamping production line, the housing is surrounded by two half shells; the two sides of the wear-resistant plate are respectively against the inner walls of the two half shells; the two half shells are respectively bent and formed by high temperature resistant materials. In this case, the structure is compact and easy to install.
[0012] As an optimization, in the aforementioned closed high temperature resistant pneumatic clamp suitable for hot stamping production line, a circular protrusion is provided on the outer side surface of the lower clamp arm. Thus, when the lower clamp arm rotates relative to the upper clamp arm, large-area friction between the lower clamp arm and the side plate of the U-shaped seat can be avoided, thereby improving the service life of the lower clamp arm.
[0013] As an optimization, in the aforementioned closed high temperature resistant pneumatic clamp suitable for hot stamping production line, the cylinder is fixed to the mounting plate and the U-shaped seat by bolts; the wear-resistant plate is fixed to the housing and the clamp body by bolts. In this case, the connection structure is simple and easy to assemble. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the structure of a closed high temperature resistant pneumatic clamp suitable for hot stamping production line of the present application;
[0015] Figure 2 yes Figure 1 A schematic diagram of the structure of the pneumatic clamp after the shell is removed;
[0016] Figure 3 It is a schematic diagram of the assembly of the cylinder and the clamp body in this application;
[0017] Figure 4 It is a schematic diagram of the structure of the U-shaped seat in this application;
[0018] Figure 5 It is a structural schematic diagram of the upper clamp arm in the present application;
[0019] Figure 6 It is a structural schematic diagram of the lower clamp arm in this application.
[0020] The markings in the accompanying drawings are: 1-housing; 2-cylinder, 21-piston rod, 22-sliding column; 3-U-shaped seat, 31-side plate, 301-through hole, 302-guide groove; 4-clamp body, 41-upper clamp arm, 411-strip groove, 412-A make way groove, 42-lower clamp arm, 421-cam curve groove, 422-B make way groove, 423-circular protrusion, 43-upper clamp head, 44-lower clamp head, 45-serrated structure; 5-mounting plate, 51-ball head structure; 6-wear-resistant plate; 7-long bolt; 8-short bolt. DETAILED DESCRIPTION
[0021] The present application is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present application.
[0022] Example:
[0023] See also Figures 1 to 3 The closed high temperature resistant pneumatic clamp suitable for hot stamping production line of this embodiment comprises a housing 1; a cylinder 2 and a U-shaped seat 3 are arranged inside the housing 1; a piston rod 21 of the cylinder 2 passes through a through hole 301 on the U-shaped seat 3 and is connected with a clamp body 4; the clamp body 4 comprises an upper clamp arm 41 and a lower clamp arm 42 which are rotatably connected (in this embodiment, the upper clamp arm 41 and the lower clamp arm 42 are connected by a rotating shaft, and both ends of the rotating shaft are arranged on the U-shaped seat 3); the upper clamp arm 41 is L-shaped, and its end protrudes out of the housing. The outer part of the housing 1 is provided with an upper clamp head 43; the lower clamp arm 42 is L-shaped, and its end extends out of the housing 1, and is provided with a lower clamp head 44; the upper clamp head 43 and the lower clamp head 44 are relatively distributed; the end of the piston rod 21 is provided with a slide column 22, and correspondingly, the upper clamp arm 41 and the lower clamp arm 51 are respectively provided with a strip groove 411 and a cam curve groove 421; the two ends of the slide column 22 are respectively matched with the strip groove 411 and the cam curve groove 421, and can slide in the strip groove 411 and the cam curve groove 421.
[0024] See also Figure 5 and Figure 6 In this embodiment, the clamping surfaces of the upper clamp head 43 and the lower clamp head 44 are respectively provided with sawtooth structures 45. Thus, the friction between the upper clamp head 43 and the lower clamp head 44 and the sheet can be increased, the clamping ability of the clamp body 4 to the sheet can be improved, and the sheet can be prevented from falling.
[0025] Furthermore, the upper clamp arm 41 is provided with an A clearance groove 412, and a part of the upper clamp head 43 is located in the A clearance groove 412 and is fixed to the upper clamp arm 41 by a threaded connection; the lower clamp arm 42 is provided with a B clearance groove 422, and a part of the lower clamp head 44 is located in the B clearance groove 422 and is fixed to the lower clamp arm 42 by a threaded connection. Thus, while ensuring the spacing between the upper and lower clamp heads, the upper and lower clamp heads can be designed to be thicker to improve the strength of the clamp heads. Furthermore, the upper clamp head 43 and the lower clamp head 44 are bolt structures; the end of the upper clamp head 43 passes through the threaded hole on the A clearance groove 412 and is tightened by a nut, and the end of the lower clamp head 44 passes through the threaded hole on the B clearance groove 422 and is tightened by a nut.
[0026] In this embodiment, the cylinder 2 is provided with a mounting plate 5 for connecting with the manipulator, and the connection of the mounting plate 5 is a ball head structure 51. The design of the ball head structure 51 allows the pneumatic clamp of the present application to rotate in any direction during installation, thereby facilitating the position adjustment of the pneumatic clamp when connected to the manipulator, and the assembly flexibility is high. In addition, when the specifications of the sheet change, the position of the pneumatic clamp can also be adjusted through the ball head structure 51, so that it can grasp the sheet at the most suitable angle, so as to achieve the maximum grasping contact surface, and the grasping is more stable and firm.
[0027] See also Figure 4 In this embodiment, a guide groove 302 is respectively provided on the two side plates 31 of the U-shaped seat 3; the two ends of the sliding column 22 are respectively located in the two guide grooves 302 and can slide in the guide grooves 302. At this time, when the piston rod 21 moves, it will drive the two ends of the sliding column 22 to slide in the guide grooves 302 on both sides, which can prevent the sliding column 22 from tilting during the movement. Furthermore, a wear-resistant plate 6 is provided between the side plate 31 and the housing 1. The provision of the wear-resistant plate 6 can avoid direct contact between the sliding column 22 and the inner wall of the housing 1, reduce the friction force when the sliding column 22 slides, reduce friction loss, and extend the service life of the sliding column 22. In addition, only the wear-resistant plate 6 needs to be replaced during later maintenance, and the maintenance cost is low.
[0028] In this embodiment, a circular protrusion 423 is provided on the outer side of the lower clamp arm 42. Thus, when the lower clamp arm 42 rotates relative to the upper clamp arm 41, large-area friction between the lower clamp arm 42 and the side plate 31 of the U-shaped seat 3 can be avoided, thereby improving the service life of the lower clamp arm 42.
[0029] In this embodiment, the housing 1 is surrounded by two half shells; the two sides of the wear-resistant plate 6 are respectively against the inner walls of the two half shells. In this case, the structure is compact and easy to install. Furthermore, the two half shells are respectively bent and formed by high temperature resistant materials.
[0030] In this embodiment, the cylinder 2, the mounting plate 5 and the U-shaped seat 3 are connected and fixed by long bolts 7; specifically, the long bolts 7 are passed through the mounting holes on the mounting plate 5 and the cylinder 2 in sequence, and screwed into the threaded holes on the U-shaped seat 3, so that the cylinder 2, the mounting plate 5 and the U-shaped seat 3 are fixed as a whole. The wear-resistant plate 6, the housing 1 and the U-shaped seat 3 are connected and fixed by short bolts 8; specifically, the short bolts 8 are passed through the mounting holes on the housing 1 and the wear-resistant plate 6 in sequence, and screwed into the threaded holes on the U-shaped seat 3, so that the housing 1, the wear-resistant plate 6 and the U-shaped seat 3 are fixed as a whole.
[0031] How it works:
[0032] In the initial state, the upper clamp head 43 and the lower clamp head 44 are in a separated state.
[0033] When it is necessary to perform the sheet clamping action, compressed air is introduced from the air hole of the cylinder 2 to extend the piston rod 21 of the cylinder 2. At this time, one end of the slide column 22 will slide in the strip groove 411, and the other end will cooperate with the cam curve groove 421 to drive the lower clamp arm 42 to rotate relative to the upper clamp arm 41 (that is, the upper clamp arm 41 does not move), drive the lower clamp head 44 to move up, clamp the sheet, and then stop ventilation. When it is necessary to release the sheet for material discharge, compressed air is introduced into the cylinder 2 to retract the piston rod 21 of the cylinder 2, drive the lower clamp arm 42 to rotate relative to the upper clamp arm 41, drive the lower clamp head 44 to move down, and restore to the initial state of the upper and lower clamp heads being separated.
[0034] When the specifications of the sheet change, the opening angle of the clamp body 4 is adjusted by controlling the extension and contraction of the piston rod 21 .
[0035] The closed high-temperature resistant pneumatic clamp suitable for a hot stamping production line of the utility model is developed to meet the needs of the hot stamping production line, but is not limited to application on the hot stamping production line, and can also be used in other working conditions.
[0036] The above general description of the utility model involved in this application and the description of its specific implementation method should not be understood as limiting the technical solution of the utility model. Based on the disclosure of this application, those skilled in the art can add, reduce or combine the disclosed technical features in the above general description or / and the specific implementation method (including examples) without violating the constituent elements of the utility model involved, to form other technical solutions within the scope of protection of this application.
Claims
1. Closed high temperature resistant pneumatic clamp suitable for hot stamping production line, characterized by: The invention comprises a shell (1); a cylinder (2) and a U-shaped seat (3) are arranged inside the shell (1); a piston rod (21) of the cylinder (2) passes through a through hole (301) on the U-shaped seat (3) and is connected to a clamp body (4); the clamp body (4) comprises an upper clamp arm (41) and a lower clamp arm (42) which are rotatably connected; the end of the upper clamp arm (41) extends out of the shell (1) and is provided with an upper clamp head (43); the end of the lower clamp arm (42) extends out of the shell (1) and is provided with a lower clamp head (44); the upper clamp head (43) and the lower clamp head (44) are arranged relatively to each other; the piston rod ( A slide column (22) is provided at the end of the upper clamp arm (41), and correspondingly, a strip groove (411) and a cam curve groove (421) are respectively provided on the upper clamp arm (41) and the lower clamp arm (42); the two ends of the slide column (22) are respectively matched with the strip groove (411) and the cam curve groove (421), and can slide in the strip groove (411) and the cam curve groove (421); when in use, the cylinder (2) is started to extend or retract the piston rod (21), drive the lower clamp arm (42) to rotate relative to the upper clamp arm (41), so as to drive the lower clamp head (44) to move up or down, thereby realizing the closing or opening of the clamp body (4).
2. The closed high temperature resistant pneumatic clamp suitable for hot stamping production line according to claim 1 is characterized in that: The clamping surfaces of the upper clamp head (43) and the lower clamp head (44) are respectively provided with sawtooth structures (45).
3. The closed high temperature resistant pneumatic clamp suitable for hot stamping production line according to claim 2, characterized in that: The upper clamp arm (41) is provided with an A clearance groove (412), and a portion of the upper clamp head (43) is located in the A clearance groove (412); the lower clamp arm (42) is provided with a B clearance groove (422), and a portion of the lower clamp head (44) is located in the B clearance groove (422).
4. The closed high temperature resistant pneumatic clamp suitable for hot stamping production line according to claim 1, characterized in that: The cylinder (2) is provided with a mounting plate (5) for connecting with a manipulator, and the connection point of the mounting plate (5) is a ball head structure (51).
5. The closed high temperature resistant pneumatic clamp suitable for hot stamping production line according to claim 4, characterized in that: A guide groove (302) is respectively provided on the two side plates (31) of the U-shaped seat (3); the two ends of the sliding column (22) are respectively located in the two guide grooves (302) and can slide in the guide grooves (302).
6. The closed high temperature resistant pneumatic clamp suitable for hot stamping production line according to claim 5, characterized in that: A wear-resistant plate (6) is provided between the side plate (31) and the housing (1).
7. The closed high temperature resistant pneumatic clamp suitable for hot stamping production line according to claim 6, characterized in that: The shell (1) is surrounded by two half shells; two sides of the wear-resistant plate (6) respectively abut against the inner walls of the two half shells.
8. The closed high temperature resistant pneumatic clamp suitable for hot stamping production line according to claim 7, characterized in that: The two half shells are respectively formed by bending from high temperature resistant materials.
9. The closed high temperature resistant pneumatic clamp suitable for hot stamping production line according to claim 1, characterized in that: A circular protrusion (423) is provided on the outer side surface of the lower clamp arm (42).
10. The closed high temperature resistant pneumatic clamp suitable for hot stamping production line according to claim 6, characterized in that: The cylinder (2) is fixed to the mounting plate (5) and the U-shaped seat (3) by bolt connection; and the wear-resistant plate (6) is fixed to the housing (1) and the U-shaped seat (3) by bolt connection.