Automatic part clamping equipment for mechanical manufacturing

Abstract

The automatic part clamping equipment for mechanical manufacturing comprises a base plate, a first gear is rotationally connected to the base plate, rack assemblies are connected to the two sides of the first gear in a meshed mode, and limiting wheels are arranged on one sides of the rack assemblies and rotationally connected to the base plate; the rack assembly adopts an iron plastic-coated structure, and a plastic part is coated by a metal plate, so that the service life is prolonged, the manufacturing cost is reduced, and the maintenance cost of the device is reduced; a self-locking assembly is designed on the first piston rod, automatic locking can be conducted in the extending process of the first piston rod, retraction is prevented, and therefore the using safety of the device is improved; the dust cleaning assembly is designed on the first piston rod and automatically cleans the first piston rod through the rotating cleaning block, the dustproof effect is improved, the self-locking assembly and the dust cleaning assembly share the same power source with the first piston rod, the structure is simple and compact, and practicability is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical manufacturing, in particular to an automatic component clamping device for mechanical manufacturing. Background Art

[0002] In the process of mechanical manufacturing, clamping devices are needed to clamp and fix the parts to be processed. Existing automatic clamping devices mainly include pneumatic clamping devices, electric clamping devices, hydraulic clamping devices and electromagnetic clamping devices. Among them, the hydraulic clamping device uses the pressure of hydraulic oil to push the piston of the oil cylinder, and the piston drives the piston rod to drive the clamp part to move, so as to achieve automatic clamping. Because it can provide a large clamping force, it is often used as a clamping device required for the processing and manufacturing of large mechanical parts. However, the existing hydraulic clamping device has the following defects when in use: first, the oil cylinder of the existing hydraulic clamping device lacks a self-locking structure during the extension process, so that the oil cylinder is at risk of retracting after the oil supply of the hydraulic system is interrupted, resulting in clamping failure, which not only affects the processing accuracy, but also may cause tool damage, workpiece scrapping, and even cause safety accidents, seriously threatening the personal safety of operators and the continuity of production; second, the oil cylinder of the existing hydraulic clamping device is only dust-proofed by the seal on the end cover, and its dust-proof effect is poor. Dust is easy to adhere to the output rod of the oil cylinder. When the piston rod is retracted, dust will accumulate at the end cover position or even invade the end cover, which will eventually lead to aggravated wear of the seal and piston rod, reducing the sealing and service life of the oil cylinder; third, for the need for synchronization The clamping fixture uses a single oil cylinder to drive one of the clamping arms, and synchronously drives the other clamping arm to clamp through a transmission gear, thereby achieving synchronous clamping. However, the rack will inevitably wear out after long-term use. To ensure the clamping accuracy, the rack needs to be replaced regularly. The existing racks are mainly of two types: metal racks and plastic racks. Metal racks have excellent wear resistance and long service life, but their production cost is extremely high, which undoubtedly greatly increases the subsequent maintenance cost. Although plastic racks are affordable, they have poor wear resistance and a short service life, which also makes the maintenance cost always at a high level. Therefore, there is an urgent need for a rack that can guarantee a certain service life and is relatively inexpensive, thereby effectively reducing the maintenance cost of the equipment. Summary of the invention

[0003] The purpose of the present invention is to provide an automatic clamping device for parts used in mechanical manufacturing to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automatic clamping device for parts used in mechanical manufacturing, comprising a base plate, a first gear is rotatably connected to the base plate, rack assemblies are meshingly connected on both sides of the first gear, a limiting wheel is provided on one side of the rack assembly, and the limiting wheel is rotatably connected to the base plate, a mounting plate is installed on the rack assembly, and the mounting plate is slidably connected to the base plate, a first cylinder body is hinged on the base plate, a dust cleaning assembly is installed on the first cylinder body, a first piston rod is slidably connected in the first cylinder body, a connecting seat is fixedly connected to the top end of the first piston rod, a connecting plate is hinged on the connecting seat, and the connecting plate is fixedly connected to one of the mounting plates.

[0005] Preferably, the rack assembly includes a plastic part, metal plates are provided on both side outer walls of the plastic part, a first bending plate is fixedly connected to the outer wall of one side of the metal plate, a second bending plate is fixedly connected to the first bending plate, a plurality of tooth plates are evenly distributed on the outer wall of the other side of the metal plate, a third bending plate is fixedly connected to the outer walls of the tooth plate on both sides, a fourth bending plate is fixedly connected to the third bending plate, and the fourth bending plate and the second bending plate are both embedded and fixed on the plastic part.

[0006] Preferably, a protrusion is provided on the tooth plate, and a plurality of through holes are evenly distributed on the fourth bending plate and the second bending plate.

[0007] Preferably, the dust cleaning assembly includes a mounting seat, a shell, a connecting sleeve, a cleaning block, a through groove, a worm gear, a worm, a second gear, a support and a spur rack, and the first cylinder body is fixedly connected to the mounting seat, the mounting seat is rotatably connected to the shell, the shell is fixedly connected to the connecting sleeve, a plurality of cleaning blocks are evenly distributed on the inner wall of the connecting sleeve, and the cleaning block is arranged on the first piston rod, and a through groove is opened on the connecting sleeve at the position corresponding to the cleaning block.

[0008] Preferably, a worm wheel is fixedly connected to the connecting sleeve, a worm is meshedly connected to the worm wheel, both ends of the worm are fixedly connected to a second gear, a spur rack is meshedly connected to the second gear, and the spur rack is slidably connected to the mounting seat, and the spur rack is fixedly connected to the lower surface of the connecting seat.

[0009] Preferably, a support is provided on one side of each of the two second gears, and the support is fixedly connected to the mounting seat, and two ends of the worm are rotatably connected to the two supports respectively.

[0010] Preferably, a self-locking assembly is installed on the mounting seat, and the self-locking assembly includes a second cylinder body, a first chamber, a second chamber, a third chamber, a first pipe joint, a first connecting pipe, a first three-way pipe, an oil pipe, a one-way valve, a second three-way pipe, a piston body, a second piston rod, a movable frame, a block, a spring, a ratchet, a bevel rack, a second pipe joint, a second connecting pipe and a third connecting pipe, and the second cylinder body is fixedly connected to the mounting seat, a second piston rod is slidably connected to the second cylinder body, a movable frame is slidably connected to the second piston rod, and the movable frame is slidably connected to the mounting seat, a block is provided on one side of the movable frame, and the block is fixedly connected to the second piston rod, a spring is sleeved on the second piston rod, and one end of the spring is provided on the movable frame, and the other end is provided on the mounting seat, two ratchets are fixedly connected to the movable frame, the ratchet is meshed with a bevel rack, and the bevel rack is slidably connected to the mounting seat, and the bevel rack is fixedly connected to the connecting seat.

[0011] Preferably, a first chamber is provided in the second cylinder body, a piston body is slidably connected in the first chamber, and the piston body is fixedly connected to the second piston rod, one side of the first chamber is conductively connected to the second chamber, and the other side is conductively connected to the third chamber, and the second piston rod is slidably connected in the second chamber, the second chamber and the third chamber are both conductively connected and fixed with a first pipe joint, a first connecting pipe is conductively fixed to the first pipe joint, the other end of the first connecting pipe is conductively fixed to a first three-way pipe, one end of the first three-way pipe is conductively fixed to an oil pipe, the other end of the first three-way pipe is conductively fixed to a one-way valve, the input end of the one-way valve is conductively fixed to a second three-way pipe, one end of the second three-way pipe is conductively fixed to the third connecting pipe, the other end of the third connecting pipe is conductively fixed to a second pipe joint, and the second pipe joint is conductively fixed to the first chamber.

[0012] Preferably, the other ends of the two second three-way pipes are connected and fixed with a second connecting pipe, and the second connecting pipe is connected and fixed on the first cylinder body.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: the rack assembly of the present invention adopts an iron-coated plastic structure, using metal plates to cover plastic parts, thereby extending the service life, reducing the manufacturing cost, and thus reducing the maintenance cost of the device; the first piston rod of the present invention is designed with a self-locking assembly, which can automatically lock during the extension of the first piston rod to prevent retraction, thereby improving the safety of the device; the first piston rod of the present invention is designed with a dust cleaning assembly, which uses a rotating cleaning block to automatically clean the first piston rod, thereby improving the dust prevention effect, and the self-locking assembly and the dust cleaning assembly share the same power source with the first piston rod, the structure is simple and compact, and it is practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0015] Figure 2 It is a schematic diagram of the three-dimensional structure of the first cylinder body of the present invention;

[0016] Figure 3 for Figure 2 A magnified view of the structure in the middle A area;

[0017] Figure 4 for Figure 2 A magnified view of the structure in the middle B area;

[0018] Figure 5 It is a schematic diagram of the three-dimensional structure of the mounting base of the present invention;

[0019] Figure 6 It is a schematic diagram of the three-dimensional structure of the connecting sleeve of the present invention;

[0020] Figure 7 It is a schematic diagram of the front cutaway structure of the second cylinder body of the present invention;

[0021] Figure 8 It is a schematic diagram of the three-dimensional cross-section structure of the rack assembly of the present invention.

[0022] In the figure: 1, substrate; 11, first gear; 12, rack assembly; 121, plastic part; 122, metal plate; 123, first bending plate; 124, second bending plate; 125, tooth plate; 126, bump; 127, third bending plate; 128, fourth bending plate; 129, through hole; 13, limit wheel; 14, mounting plate; 15, slider; 16, slide rail; 17, connecting seat; 18, first piston rod; 19, first cylinder; 110, connecting plate; 2, dust cleaning assembly; 21, mounting seat; 22, housing; 23, connecting sleeve; 24, cleaning block; 25, through groove; 26, worm gear ; 27, worm; 28, second gear; 29, support; 210, spur rack; 3, self-locking assembly; 31, second cylinder; 32, first chamber; 33, second chamber; 34, third chamber; 35, first pipe joint; 36, first connecting pipe; 37, first three-way pipe; 38, oil pipe; 39, one-way valve; 310, second three-way pipe; 311, piston body; 312, second piston rod; 313, movable frame; 314, stopper; 315, spring; 316, ratchet; 317, bevel rack; 318, second pipe joint; 319, second connecting pipe; 320, third connecting pipe. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] Please see attached Figure 1 -Attached Figure 8The present invention provides an embodiment: an automatic clamping device for parts used in mechanical manufacturing, comprising a base plate 1, a first gear 11 is rotatably connected to the base plate 1, both sides of the first gear 11 are meshedly connected with a rack assembly 12, a limit wheel 13 is arranged on one side of the rack assembly 12, and the limit wheel 13 is rotatably connected to the base plate 1, a mounting plate 14 is installed on the rack assembly 12, and the mounting plate 14 is slidably connected to the base plate 1, a first cylinder body 19 is hinged on the base plate 1, a dust cleaning assembly 2 is installed on the first cylinder body 19, a first piston rod 18 is slidably connected in the first cylinder body 19, a connecting seat 17 is fixedly connected to the top of the first piston rod 18, and a connecting seat 17 is hinged on the connecting seat 17 There is a connecting plate 110, and the connecting plate 110 is fixedly connected to one of the mounting plates 14. The first cylinder body 19 and the first piston rod 18 form an oil cylinder. The first piston rod 18 drives the connecting plate 110 through the connecting seat 17, and the connecting plate 110 drives the mounting plate 14. The rack assembly 12 on the mounting plate 14 moves accordingly, and the rack assembly 12 drives the first gear 11, and the first gear 11 drives another rack assembly 12, so that the other mounting plate 14 moves, so that the clamps on the two mounting plates 14 are clamped or separated, and the limiting wheel 13 is used to limit and guide the rack assembly 12; the rack assembly 12 includes a plastic part 121, and the outer walls of the plastic part 121 on both sides A metal plate 122 is provided on each of the metal plates 122, a first bending plate 123 is fixedly connected to an outer wall on one side of the metal plate 122, a second bending plate 124 is fixedly connected to the first bending plate 123, a plurality of tooth plates 125 are evenly distributed on an outer wall on the other side of the metal plate 122, a third bending plate 127 is fixedly connected to the outer walls on both sides of the tooth plate 125, a fourth bending plate 128 is fixedly connected to the third bending plate 127, and the fourth bending plate 128 and the second bending plate 124 are both inlaid and fixed on the plastic part 121, the plastic part 121 is a plastic rack, the metal plate 122, the first bending plate 123, the tooth plate 125 and the third bending plate 127 are used to cover the plastic part 121, and the second bending plate 124 is used to cover the plastic part 121. The bending plate 124 and the fourth bending plate 128 are used to enhance the connection strength between the metal material and the plastic part 121; the tooth plate 125 is provided with a protrusion 126, and the fourth bending plate 128 and the second bending plate 124 are evenly provided with a plurality of through holes 129, and the protrusion 126 and the through holes 129 are used to enhance the connection strength between the metal material and the plastic part 121; a slide rail 16 is provided on one side of the two limiting wheels 13, and the slide rail 16 is fixedly connected to the base plate 1, and the lower surfaces of the two mounting plates 14 are fixedly connected with two sliders 15, and the sliders 15 are slidably connected to the slide rails 16, and the slide rails 16 cooperate with the sliders 15 to realize the sliding connection between the mounting plate 14 and the base plate 1;The dust cleaning component 2 includes a mounting seat 21, a shell 22, a connecting sleeve 23, a cleaning block 24, a through slot 25, a worm wheel 26, a worm 27, a second gear 28, a support 29 and a spur rack 210, and the first cylinder body 19 is fixedly connected to the mounting seat 21, the mounting seat 21 is rotatably connected with the shell 22, the shell 22 is fixedly connected with the connecting sleeve 23, a plurality of cleaning blocks 24 are evenly distributed on the inner wall of the connecting sleeve 23, and the cleaning blocks 24 are arranged on the first piston rod 18, and a through slot 25 is opened at the position corresponding to the cleaning block 24 on the connecting sleeve 23. The dust cleaning component 2 uses the rotating connecting sleeve 23 to clean the first piston rod 18, and the cleaning block 24 in the connecting sleeve 23 removes the dust attached to the first piston rod 18, and the accumulated dust is discharged from the through slot 25; A worm wheel 26 is fixedly connected to the connecting sleeve 23, and a worm 27 is meshedly connected to the worm wheel 26. Both ends of the worm 27 are fixedly connected to a second gear 28, and a spur rack 210 is meshedly connected to the second gear 28, and the spur rack 210 is slidably connected to the mounting seat 21. The spur rack 210 is fixedly connected to the lower surface of the connecting seat 17, and the second gear 28 is driven by the moving spur rack 210, thereby driving the worm 27, and the worm 27 drives the connecting sleeve 23 through the worm wheel 26; a support 29 is provided on one side of the two second gears 28, and the support 29 is fixedly connected to the mounting seat 21, and the two ends of the worm 27 are respectively rotatably connected to the two supports 29, and the support 29 is used to install the worm 27; a self-locking component 3 is installed on the mounting seat 21, and the self-locking component Component 3 includes a second cylinder body 31, a first chamber 32, a second chamber 33, a third chamber 34, a first pipe joint 35, a first connecting pipe 36, a first three-way pipe 37, an oil pipe 38, a one-way valve 39, a second three-way pipe 310, a piston body 311, a second piston rod 312, a movable frame 313, a stopper 314, a spring 315, a ratchet 316, a helical rack 317, a second pipe joint 318, a second connecting pipe 319 and a third connecting pipe 320, and the second cylinder body 31 is fixedly connected to the mounting seat 21, the second cylinder body 31 is slidably connected with the second piston rod 312, the second piston rod 312 is slidably connected with the movable frame 313, and the movable frame 313 is slidably connected to the mounting seat 21, and one side of the movable frame 313 is provided with The stopper 314 is fixedly connected to the second piston rod 312. The second piston rod 312 is sleeved with a spring 315. One end of the spring 315 is arranged on the moving frame 313, and the other end is arranged on the mounting seat 21. The moving frame 313 is fixedly connected with two ratchets 316. The ratchets 316 are meshed and connected with a bevel rack 317. The bevel rack 317 is slidably connected to the mounting seat 21. The bevel rack 317 is fixedly connected to the connecting seat 17. The self-locking component 3 uses the second piston rod 312 in combination with the stopper 314 to pull the moving frame 313. The spring 315 provides a reset elastic force for the moving frame 313. The moving frame 313 uses the ratchets 316 to lock the bevel rack 317 to prevent the bevel rack 317 from moving downward, thereby ensuring safety in use.The second cylinder body 31 is provided with a first chamber 32, a piston body 311 is slidably connected in the first chamber 32, and the piston body 311 is fixedly connected to the second piston rod 312, one side of the first chamber 32 is conductively connected to the second chamber 33, and the other side is conductively connected to the third chamber 34, and the second piston rod 312 is slidably connected to the second chamber 33, and the second chamber 33 and the third chamber 34 are conductively fixed with a first pipe joint 35, and the first pipe joint 35 is conductively fixed with a first connecting pipe 36, and the first connecting pipe 36 is conductively connected to the second chamber 33. The other end is connected to and fixed with a first three-way pipe 37, one end of the first three-way pipe 37 is connected to and fixed with an oil pipe 38, the other end of the first three-way pipe 37 is connected to and fixed with a one-way valve 39, the input end of the one-way valve 39 is connected to and fixed with a second three-way pipe 310, one end of the second three-way pipe 310 is connected to and fixed with a third connecting pipe 320, the other end of the third connecting pipe 320 is connected to and fixed with a second pipe joint 318, and the second pipe joint 318 is connected to and fixed on the first chamber 32, and the other end of the second three-way pipe 310 is connected to and fixed with the second connecting pipe 319, and the second connecting pipe 319 is connected and fixed on the first cylinder body 19, the hydraulic station injects hydraulic oil into one of the oil pipes 38, the hydraulic oil enters the first pipe joint 35 through the first three-way pipe 37 and the first connecting pipe 36, and then enters the third chamber 34, pushing the piston body 311 to move outward, and the hydraulic oil on one side of the piston body 311 is discharged from the first pipe joint 35 on the second chamber 33 to another oil pipe 38, and flows back to the hydraulic station. When the piston body 311 moves to the limit position, one of the second pipe joints on the first chamber 32 The pipe joint 318 is not blocked by the piston body 311. The hydraulic oil in the first chamber 32 can enter the third connecting pipe 320 from the second pipe joint 318, then enter the second connecting pipe 319 through the second three-way pipe 310, and enter the first cylinder 19 through the second connecting pipe 319, pushing the first piston rod 18 in the first cylinder 19 to move upward. The hydraulic oil pushed by the first piston rod 18 is discharged from another second connecting pipe 319 to another oil pipe 38. The one-way valve 39 is used to ensure that the piston body 311 is driven by the hydraulic oil first. ;

[0025] Working principle: When using the present invention, the oil cylinder composed of the first cylinder body 19 and the first piston rod 18 drives the mounting plate 14, so that the clamp on the mounting plate 14 is clamped or separated. The specific process is: the first piston rod 18 drives the connecting plate 110 through the connecting seat 17, the connecting plate 110 drives the mounting plate 14, and the rack assembly 12 on the mounting plate 14 moves accordingly, the rack assembly 12 drives the first gear 11, and the first gear 11 drives another rack assembly 12, so that the other mounting plate 14 moves, so that the two mounting plates 14 are clamped or separated. The clamp on the mounting plate 14 is clamped or separated. During this process, the limiting wheel 13 limits and guides the rack assembly 12. The slide rail 16 cooperates with the slider 15 to realize the sliding connection between the mounting plate 14 and the base plate 1. When driving the first piston rod 18 to extend, it is first necessary to make the second piston rod 312 in the second cylinder body 31 in an extended state, so that the stopper 314 does not limit the moving frame 313, and the spring 315 in a compressed state can push the moving frame 313 to reset, so that the ratchet on the moving frame 313 316 is meshed with the bevel rack 317 to lock the bevel rack 317, and then the first piston rod 18 is driven to move upward. Specifically, the hydraulic oil is injected into one of the oil pipes 38 by using the hydraulic station. The hydraulic oil enters the first pipe joint 35 through the first three-way pipe 37 and the first connecting pipe 36, and then enters the third chamber 34, pushing the piston body 311 to move outward. The hydraulic oil on one side of the piston body 311 is discharged from the first pipe joint 35 on the second chamber 33 to another oil pipe 38, and flows back to the hydraulic station. When the piston body 31 1 moves to the extreme position, one of the second pipe joints 318 on the first chamber 32 is not blocked by the piston body 311, and the hydraulic oil in the first chamber 32 can enter the third connecting pipe 320 from the second pipe joint 318, and then enter the second connecting pipe 319 through the second three-way pipe 310, and enter the first cylinder 19 through the second connecting pipe 319, pushing the first piston rod 18 in the first cylinder 19 to move upward, and the hydraulic oil pushed by the first piston rod 18 is discharged from the other second connecting pipe 319 to the other oil pipe 38;When driving the first piston rod 18 to retract, the second piston rod 312 needs to be retracted first, thereby driving the movable frame 313 through the stopper 314, so that the ratchet 316 on the movable frame 313 disengages from the bevel rack 317, thereby unlocking the bevel rack 317, and then driving the first piston rod 18 to move downward. Specifically, the hydraulic station is used to inject hydraulic oil into one of the oil pipes 38, and the hydraulic oil enters the first pipe joint 35 through the first three-way pipe 37, and then enters the second chamber 33, pushing the piston body 311 to move inward, and the hydraulic oil on one side of the piston body 311 is discharged from the third chamber 34. The first pipe joint 35 is discharged to another oil pipe 38 and refluxes to the hydraulic station. When the piston body 311 moves to the limit position, one of the second pipe joints 318 on the first chamber 32 is not blocked by the piston body 311. The hydraulic oil in the first chamber 32 can enter the third connecting pipe 320 from the second pipe joint 318, and then enter the second connecting pipe 319 through the second tee pipe 310, and enter the first cylinder 19 through the second connecting pipe 319, pushing the first piston rod 18 in the first cylinder 19 to move downward. The hydraulic oil pushed by the first piston rod 18 is discharged from the other second pipe joint 318 to the third connecting pipe 320. The connecting pipe 319 is discharged to another oil pipe 38; when the first piston rod 18 moves downward, the spur rack 210 on the connecting seat 17 will also move accordingly, and the spur rack 210 drives the worm 27 through the second gear 28, and the worm 27 rotates on the support 29, and the worm 27 drives the connecting sleeve 23 through the worm wheel 26, and the connecting sleeve 23 rotates on the mounting seat 21 through the housing 22, and the cleaning block 24 in the connecting sleeve 23 rotates to clean the surface of the first piston rod 18, and the accumulated dust is discharged through the through groove 25; wherein, the one-way valve 39 is used to ensure that the piston body 311 is driven by the hydraulic oil first; In the rack assembly 12, the metal plate 122, the first bending plate 123, the second bending plate 124, the tooth plate 125, the protrusion 126, the third bending plate 127, the fourth bending plate 128, and the through hole 129 are an integrated structure, the plastic part 121 is a plastic rack, the metal plate 122, the first bending plate 123, the tooth plate 125 and the third bending plate 127 are used to cover the plastic part 121 to improve its wear resistance, and the second bending plate 124, the protrusion 126, the fourth bending plate 128 and the through hole 129 are used to enhance the connection strength between the metal material and the plastic part 121. ;

[0026] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. An automatic clamping device for parts used in mechanical manufacturing, comprising a base plate (1), characterized in that: The base plate (1) is rotatably connected to a first gear (11), both sides of the first gear (11) are meshingly connected to rack assemblies (12), one side of the rack assembly (12) is provided with a limit wheel (13), and the limit wheel (13) is rotatably connected to the base plate (1), a mounting plate (14) is mounted on the rack assembly (12), and the mounting plate (14) is slidably connected to the base plate (1), a first cylinder body (19) is hingedly connected to the base plate (1), a dust removal assembly (2) is mounted on the first cylinder body (19), a first piston rod (18) is slidably connected in the first cylinder body (19), a connecting seat (17) is fixedly connected to the top end of the first piston rod (18), a connecting plate (110) is hingedly connected to the connecting seat (17), and the connecting plate (110) is fixedly connected to one of the mounting plates (14).

2. The automatic clamping device for mechanical parts according to claim 1 is characterized in that: The rack assembly (12) comprises a plastic part (121), and metal plates (122) are arranged on both side outer walls of the plastic part (121); a first bending plate (123) is fixedly connected to one side outer wall of the metal plate (122), and a second bending plate (124) is fixedly connected to the first bending plate (123); a plurality of tooth plates (125) are evenly distributed on the other side outer wall of the metal plate (122); a third bending plate (127) is fixedly connected to both side outer walls of the tooth plate (125), and a fourth bending plate (128) is fixedly connected to the third bending plate (127), and the fourth bending plate (128) and the second bending plate (124) are both embedded and fixed on the plastic part (121).

3. The automatic clamping device for mechanical manufacturing parts according to claim 2 is characterized in that: The tooth plate (125) is provided with a protrusion (126), and the fourth bending plate (128) and the second bending plate (124) are evenly distributed with a plurality of through holes (129).

4. The automatic clamping device for mechanical parts according to claim 1 is characterized in that: A slide rail (16) is provided on one side of the two limiting wheels (13), and the slide rail (16) is fixedly connected to the base plate (1); two sliders (15) are fixedly connected to the lower surfaces of the two mounting plates (14), and the sliders (15) are slidably connected to the slide rail (16).

5. The automatic clamping device for mechanical manufacturing parts according to claim 1 is characterized in that: The dust cleaning assembly (2) comprises a mounting seat (21), a shell (22), a connecting sleeve (23), a cleaning block (24), a through groove (25), a worm wheel (26), a worm (27), a second gear (28), a support (29) and a spur rack (210), wherein the first cylinder body (19) is fixedly connected to the mounting seat (21), the mounting seat (21) is rotatably connected to the shell (22), the shell (22) is fixedly connected to the connecting sleeve (23), a plurality of cleaning blocks (24) are evenly distributed on the inner wall of the connecting sleeve (23), the cleaning blocks (24) are arranged on the first piston rod (18), and a through groove (25) is provided on the connecting sleeve (23) at a position corresponding to the cleaning block (24).

6. The automatic clamping device for mechanical manufacturing parts according to claim 5 is characterized in that: The connecting sleeve (23) is fixedly connected to a worm wheel (26), the worm wheel (26) is meshedly connected to a worm (27), both ends of the worm (27) are fixedly connected to a second gear (28), the second gear (28) is meshedly connected to a spur rack (210), and the spur rack (210) is slidably connected to the mounting seat (21), and the spur rack (210) is fixedly connected to the lower surface of the connecting seat (17).

7. The automatic clamping device for mechanical parts manufacturing according to claim 5 is characterized in that: A support (29) is provided on one side of each of the two second gears (28), and the support (29) is fixedly connected to the mounting base (21), and the two ends of the worm (27) are rotatably connected to the two supports (29) respectively.

8. The automatic clamping device for mechanical parts according to claim 5 is characterized in that: The mounting seat (21) is provided with a self-locking assembly (3), which comprises a second cylinder body (31), a first chamber (32), a second chamber (33), a third chamber (34), a first pipe joint (35), a first connecting pipe (36), a first three-way pipe (37), an oil pipe (38), a one-way valve (39), a second three-way pipe (310), a piston body (311), a second piston rod (312), a movable frame (313), a stopper (314), a spring (315), a ratchet (316), a bevel rack (317), a second pipe joint (318), a second connecting pipe (319) and a third connecting pipe (320), and the second cylinder body (31) is fixedly connected to the mounting seat (21), and a first connecting pipe (31) is slidably connected in the second cylinder body (31). The second piston rod (312) is provided with a movable frame (313) in a sliding connection with the second piston rod (312), and the movable frame (313) is slidably connected to the mounting seat (21), a stopper (314) is provided on one side of the movable frame (313), and the stopper (314) is fixedly connected to the second piston rod (312), a spring (315) is sleeved on the second piston rod (312), and one end of the spring (315) is provided on the movable frame (313), and the other end is provided on the mounting seat (21), two ratchets (316) are fixedly connected to the movable frame (313), the ratchets (316) are meshedly connected with an oblique rack (317), and the oblique rack (317) is slidably connected to the mounting seat (21), and the oblique rack (317) is fixedly connected to the connecting seat (17).

9. The automatic clamping device for mechanical parts according to claim 8, characterized in that: The second cylinder body (31) is provided with a first chamber (32), a piston body (311) is slidably connected to the first chamber (32), and the piston body (311) is fixedly connected to the second piston rod (312), one side of the first chamber (32) is conductively connected to the second chamber (33), and the other side is conductively connected to the third chamber (34), and the second piston rod (312) is slidably connected to the second chamber (33), the second chamber (33) and the third chamber (34) are conductively fixed with a first pipe joint (35), and the first pipe joint (35) is conductively fixed with a first connection The first connecting pipe (36) is connected to a first three-way pipe (37) at the other end thereof, an oil pipe (38) is connected to one end thereof, a one-way valve (39) is connected to the other end thereof, an input end of the one-way valve (39) is connected to a second three-way pipe (310) at the input end thereof, a third connecting pipe (320) is connected to one end thereof, a second pipe joint (318) is connected to the other end thereof, and the second pipe joint (318) is connected to the first chamber (32).

10. The automatic clamping device for mechanical manufacturing parts according to claim 9, characterized in that: The other ends of the two second three-way pipes (310) are connected and fixed with a second connecting pipe (319), and the second connecting pipe (319) is connected and fixed on the first cylinder body (19).

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