Automatic turning device for carpet production line

Abstract

A carpet assembly line automatic turning device relates to the technical field of carpet assembly line production equipment. The technical solution of the present application is as follows: it includes a supporting mechanism, a limiting mechanism, a power mechanism, a control mechanism and an inspection mechanism, the supporting mechanism includes a supporting frame and a supporting assembly, the supporting frame is connected to the supporting assembly; the limiting mechanism includes a fixed frame and a limiting assembly, the fixed frame is connected to the limiting assembly, the limiting assembly is connected to the supporting assembly; the power mechanism includes a motor, a rotating plate, a clamping assembly and a reciprocating rotating assembly, the motor is connected to the reciprocating rotating assembly, the reciprocating rotating assembly is connected to the supporting assembly, the reciprocating rotating assembly is connected to the clamping assembly, the clamping assembly is connected to the rotating plate, and the rotating plate is connected to the supporting assembly; the control mechanism includes a second connecting rod and a control assembly, the second connecting rod is connected to the control assembly, and the control assembly is connected to the supporting assembly; the inspection mechanism includes a sticking cylinder, a magnifying glass, a driving assembly and an adjusting assembly.

Description

Technical Field

[0001] The invention relates to the technical field of carpet assembly line production equipment, and in particular discloses an automatic turning device for a carpet assembly line. Background Art

[0002] Carpet production is a complex and tedious process, one of the important steps is the turning of carpets. Traditionally, turning carpets usually requires manual operation, which is not only time-consuming and labor-intensive, but also poses a safety hazard. In order to improve production efficiency and work safety, the automatic turning device for carpet production lines came into being.

[0003] The automatic turning device for carpet production line is a device specially designed for automatic turning on carpet production lines. It can automatically turn the carpet from one side to the other through components such as motors, transmission devices and control systems, achieving fast and stable turning operations.

[0004] The development and application of automatic turning devices for carpet production lines have brought important technical support to the carpet production industry. It not only improves production efficiency and reduces the burden of manual operation, but also greatly reduces work safety risks. Through the use of these devices, carpet production companies can achieve automated production, improve product quality and market competitiveness. With the continuous advancement of science and technology, we can expect the performance and functions of automatic turning devices for carpet production lines to continue to improve, bringing more innovations and possibilities to the carpet industry.

[0005] The announcement number is CN204137382U. The patent discloses a carpet automatic turning over inspection device. The technical solution of the patent includes a frame, a carpet conveyor line is arranged on the frame, the conveyor belt of the carpet conveyor line is composed of a plurality of narrow belts arranged in parallel and spaced apart, and a turning shaft driven by a servo motor is rotatably mounted on the frame, a turning mechanism is installed at a position corresponding to the interval between two adjacent narrow belts on the turning shaft, the turning mechanism includes a mounting seat fixed on the turning shaft, a first and a second turning rod are respectively arranged on both sides of the mounting seat, and a first and a second photoelectric switch are installed on the frame at intervals. The above-mentioned carpet automatic turning over inspection device can be used in conjunction with a carpet packaging production line, but the patent cannot realize the cleaning of the outer surface of the carpet, thereby affecting the observation effect of manual observation. Summary of the invention

[0006] In view of the above technical problems, the technical solution adopted by the present invention is: an automatic turning device for a carpet assembly line, including a limiting mechanism, a supporting mechanism, a power mechanism, a control mechanism and an inspection mechanism, the supporting mechanism includes a supporting frame and a supporting assembly, and the supporting frame is connected to the supporting assembly; the limiting mechanism includes a fixing frame and a limiting assembly, the fixing frame is connected to the limiting assembly, and the limiting assembly is connected to the supporting assembly.

[0007] The power mechanism includes a motor, a rotating plate, a clamping assembly and a reciprocating rotating assembly. The motor is connected to the reciprocating rotating assembly, the reciprocating rotating assembly is connected to the supporting assembly, the reciprocating rotating assembly is connected to the clamping assembly, the clamping assembly is connected to the rotating plate, and the rotating plate is connected to the supporting assembly.

[0008] The control mechanism comprises a second connecting rod and a control assembly, wherein the second connecting rod is connected to the control assembly, and the control assembly is connected to the supporting assembly.

[0009] The inspection mechanism comprises a sticking cylinder, a magnifying glass, a driving component and an adjusting component, wherein the driving component is connected to the sticking cylinder, the driving component is connected to the control component, the driving component is connected to the adjusting component, and the adjusting component is connected to the magnifying glass.

[0010] Furthermore, two support frames are provided, and the support assembly includes a lower connecting rod. The two support frames are connected via the lower connecting rod. An upper connecting rod is fixedly installed on each support frame, and two first intermediate rods are symmetrically fixedly installed between the two upper connecting rods.

[0011] Furthermore, a limiting groove is provided on the side of the fixing frame, and the limiting assembly includes a fixing rod, which is fixedly installed on the side of the fixing frame, a second intermediate rod is fixedly installed on the side of the fixing rod, and a first connecting rod is fixedly installed on the side of the second intermediate rod. The limiting mechanism controls the radius of the mechanism to meet the radius of the first connecting rod and the fixed rod, and the first connecting rod is connected to the control assembly.

[0012] Furthermore, the reciprocating rotation assembly includes a motor bracket, the motor is fixedly mounted on the motor bracket, the motor bracket is fixedly mounted on the lower side of the upper connecting rod, a rotating disk is fixedly mounted on the motor output end, a second connecting rod is fixedly mounted on the side of the rotating disk, a first connecting rod is rotatably mounted on the outer surface of the second connecting rod, a third connecting rod is rotatably mounted on the outer surface of the first connecting rod, a first gear is fixedly mounted on the side of the third connecting rod, and the first gear is rotatably mounted on the upper connecting rod.

[0013] Furthermore, the clamping assembly includes a fourth connecting rod, which is fixedly mounted on the side of the first gear, a rotating plate is fixedly mounted on the side of the fourth connecting rod, the fourth connecting rod is rotatably connected to the upper connecting rod, a rotating plate is fixedly mounted on the side of the fourth connecting rod, a clamping rod is slidably mounted on the side of the rotating plate, a vertical shaft is slidably mounted on the side of the clamping rod, a spring is wound on the outer surface of the vertical shaft, one end of the spring is fixedly mounted on the vertical shaft, and the other end of the spring is fixedly mounted on the clamping rod, a first rack is slidably mounted on the side of the upper connecting rod, and the first rack is meshed with the first gear.

[0014] Furthermore, the control component includes a fixed block, which is fixedly installed on the upper side of the upper connecting rod, and a fifth connecting shaft is rotatably installed on the side of the fixed block, a second gear is fixedly installed on the outer surface of the fifth connecting shaft, the second gear is meshed with the first rack, a second connecting rod is fixedly installed on the outer surface of the fifth connecting shaft, and a first contact switch and a second contact switch are fixedly installed on the upper side of the upper connecting rod.

[0015] Furthermore, a sliding groove is provided on the upper side of the first intermediate rod, and an electric cylinder is fixedly installed on the inner wall of the sliding groove. The electric cylinder is engaged with the first contact switch and the second contact switch respectively. The first contact switch controls the extension of the telescopic end of the electric cylinder, and the second contact switch controls the contraction of the telescopic end of the electric cylinder.

[0016] Furthermore, the driving component includes a slider, which is slidably installed on the inner wall of the sliding groove, a curved rod is fixedly installed on the upper side of the slider, a movable shaft is fixedly installed on the side of the curved rod, the movable shaft is slidably installed on the inner wall of the limiting groove, a vertical plate is fixedly installed on the outer surface of the movable shaft, a sticky cylinder is fixedly installed on the side of the vertical plate, and a hair remover is installed on the sticky cylinder.

[0017] Furthermore, the adjusting assembly includes a third gear, which is rotatably mounted on the outer surface of the curved rod, a second rack is fixedly mounted on the outer surface of the second intermediate rod, the third gear meshes with the second rack, a third connecting rod is fixedly mounted on the side of the third gear, the third connecting rod is rotatably connected to the curved rod, a rotating shaft is rotatably mounted on the end of the third connecting rod away from the curved rod, an integrated block is rotatably mounted on the outer surface of the sticky cylinder, a sliding block is slidably mounted on the integrated block, a mounting block is fixedly mounted on the lower side of the sliding block, an adjusting block is fixedly mounted on the upper side of the sliding block, the adjusting block is slidably connected to the integrated block, a magnifying glass is fixedly mounted on the side of the mounting block, a threaded hole is provided on the side of the integrated block, a spiral shaft is mounted in the threaded hole of the integrated block, and the spiral shaft and the threaded hole of the integrated block form a spiral fit.

[0018] Compared with the prior art, the present invention has the following advantages: (1) The present invention can clean the outer surface of the blanket, thereby improving the observation effect; (2) The present invention can clean the blanket and magnify it by alternating movements, thereby facilitating observation and observing the details of the blanket; (3) The present invention can adjust the position of the magnifying glass, thereby facilitating adaptation to observers of different heights. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 It is a schematic diagram of the supporting mechanism structure of the present invention.

[0021] Figure 3 for Figure 2 Schematic diagram of the local enlarged structure at point A in the middle.

[0022] Figure 4It is a schematic diagram of the power mechanism structure of the present invention.

[0023] Figure 5 for Figure 4 Schematic diagram of the local enlarged structure at point B in the middle.

[0024] Figure 6 It is a schematic diagram of the structure of the limiting mechanism of the present invention.

[0025] Figure 7 for Figure 6 Schematic diagram of the partial enlarged structure at point C in the middle.

[0026] Figure 8 for Figure 6 Schematic diagram of the local enlarged structure at point D in the middle.

[0027] Figure numerals: 1-support mechanism; 2-limiting mechanism; 3-power mechanism; 4-control mechanism; 5-inspection mechanism; 101-support frame; 102-lower connecting rod; 103-upper connecting rod; 104-first intermediate rod; 201-fixing frame; 202-limiting groove; 203-first connecting rod; 204-second intermediate rod; 205-fixing rod; 301-motor; 302-motor bracket; 303-rotating plate; 304-second connecting rod; 305-first connecting rod; 306-first rack; 307-third connecting rod; 308-first gear; 309-fourth connecting rod; 310-rotating plate; 311 -clamping rod; 312-vertical axis; 313-spring; 401-second gear; 402-fifth connecting axis; 403-fixed block; 404-second connecting rod; 405-first contact switch; 406-second contact switch; 501-electric cylinder; 502-slider; 503-sliding groove; 504-bend rod; 505-third gear; 506-third connecting rod; 507-second rack; 508-moving axis; 509-vertical plate; 510-sticking cylinder; 511-rotating axis; 512-integrated block; 513-sliding block; 514-mounting block; 515-adjusting block; 516-screw shaft; 517-magnifying glass. DETAILED DESCRIPTION

[0028] The technical solution of the present invention is further explained below in combination with and through specific implementation methods.

[0029] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent; in order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0030] As attached Figure 1 ~Attached Figure 8As shown, the supporting mechanism 1 includes a supporting frame 101 and a supporting assembly, and the supporting frame 101 is connected to the supporting assembly; the limiting mechanism 2 includes a fixed frame 201 and a limiting assembly, the fixed frame 201 is connected to the limiting assembly, and the limiting assembly is connected to the supporting assembly; the power mechanism 3 includes a motor 301, a rotating plate 310, a clamping assembly and a reciprocating rotating assembly, the motor 301 is connected to the reciprocating rotating assembly, the reciprocating rotating assembly is connected to the supporting assembly, the reciprocating rotating assembly is connected to the clamping assembly, the clamping assembly is connected to the rotating plate 310, and the rotating plate 310 is connected to the supporting assembly; the control mechanism 4 includes a second connecting rod 404 and a control assembly, the second connecting rod 404 is connected to the control assembly, and the control assembly is connected to the supporting assembly; the inspection mechanism 5 includes a sticking cylinder 510, a magnifying glass 517, a driving assembly and an adjusting assembly, the driving assembly is connected to the sticking cylinder 510, the driving assembly is connected to the control assembly, the driving assembly is connected to the adjusting assembly, and the adjusting assembly is connected to the magnifying glass 517.

[0031] As attached Figure 2 ~Attached Figure 6 As shown, two support frames 101 are provided, and the support assembly includes a lower connecting rod 102. The two support frames 101 are connected by the lower connecting rod 102. An upper connecting rod 103 is fixedly installed on each support frame 101, and two first intermediate rods 104 are fixedly installed symmetrically between the two upper connecting rods 103; a limiting groove 202 is provided on the side of the fixed frame 201, and the limiting assembly includes a fixed rod 205, and the fixed rod 205 is fixedly installed on the side of the fixed frame 201. A second intermediate rod 204 is fixedly installed on the side of the fixed rod 205, and a first connecting rod 203 is fixedly installed on the side of the second intermediate rod 204, and the radius of the second intermediate rod 204 is smaller than that of the first connecting rod 2 03 and the radius of the fixed rod 205, the first connecting rod 203 is connected to the control component; the reciprocating rotation component includes a motor bracket 302, the motor 301 is fixedly mounted on the motor bracket 302, the motor bracket 302 is fixedly mounted on the lower side of the upper connecting rod 103, a rotating disk 303 is fixedly mounted on the output end of the motor 301, a second connecting rod 304 is fixedly mounted on the side of the rotating disk 303, a first connecting rod 305 is rotatably mounted on the outer surface of the second connecting rod 304, a third connecting rod 307 is rotatably mounted on the outer surface of the first connecting rod 305, a first gear 308 is fixedly mounted on the side of the third connecting rod 307, and the first gear 308 is rotatably mounted on the upper connecting rod 103.

[0032] As attached Figure 3 ~Attached Figure 7As shown, the clamping assembly includes a fourth connecting rod 309, the fourth connecting rod 309 is fixedly mounted on the side of the first gear 308, the rotating plate 310 is fixedly mounted on the side of the fourth connecting rod 309, the fourth connecting rod 309 is rotatably connected to the upper connecting rod 103, the rotating plate 310 is fixedly mounted on the side of the fourth connecting rod 309, the clamping rod 311 is slidably mounted on the side of the rotating plate 310, the vertical shaft 312 is slidably mounted on the side of the clamping rod 311, the outer surface of the vertical shaft 312 is wound with a spring 313, one end of the spring 313 is fixedly mounted on the vertical shaft 312, and the other end of the spring 313 is fixed Installed on the clamping rod 311, the first rack 306 is slidably installed on the side of the upper connecting rod 103, and the first rack 306 is meshed with the first gear 308; the control component includes a fixed block 403, the fixed block 403 is fixedly installed on the upper side of the upper connecting rod 103, and the fifth connecting shaft 402 is rotatably installed on the side of the fixed block 403, the second gear 401 is fixedly installed on the outer surface of the fifth connecting shaft 402, the second gear 401 is meshed with the first rack 306, the second connecting rod 404 is fixedly installed on the outer surface of the fifth connecting shaft 402, and the first contact switch 405 and the second contact switch 406 are fixedly installed on the upper side of the upper connecting rod 103.

[0033] As attached Figure 4 ~Attached Figure 8As shown, a sliding groove 503 is provided on the upper side of the first intermediate rod 104, and an electric cylinder 501 is fixedly installed on the inner wall of the sliding groove 503. The electric cylinder 501 is respectively engaged with the first contact switch 405 and the second contact switch 406. The first contact switch 405 controls the extension of the telescopic end of the electric cylinder 501, and the second contact switch 406 controls the contraction of the telescopic end of the electric cylinder 501; the driving component includes a slider 502, the slider 502 is slidably installed on the inner wall of the sliding groove 503, a curved rod 504 is fixedly installed on the upper side of the slider 502, a moving shaft 508 is fixedly installed on the side of the curved rod 504, and the moving shaft 508 is slidably installed on the inner wall of the limiting groove 202, a vertical plate 509 is fixedly installed on the outer surface of the moving shaft 508, a sticking cylinder 510 is fixedly installed on the side of the vertical plate 509, and a hair sticking device is installed on the sticking cylinder 510; the adjusting component includes a third gear 505, and the third gear 505 is rotatably installed on the outer surface of the curved rod 504 On the surface, a second rack 507 is fixedly installed on the outer surface of the second intermediate rod 204, and the third gear 505 is meshed with the second rack 507. A third connecting rod 506 is fixedly installed on the side of the third gear 505. The third connecting rod 506 is rotatably connected to the curved rod 504. A rotating shaft 511 is rotatably installed on the end of the third connecting rod 506 away from the curved rod 504. An integrated block 512 is rotatably installed on the outer surface of the rotating shaft 511. A sliding block 513 is slidably installed on the integrated block 512. A mounting block 514 is fixedly installed on the lower side of the sliding block 513, and an adjusting block 515 is fixedly installed on the upper side of the sliding block 513. The adjusting block 515 is slidably connected to the integrated block 512. A magnifying glass 517 is fixedly installed on the side of the mounting block 514. A threaded hole is provided on the side of the integrated block 512. A screw shaft 516 is installed in the threaded hole of the integrated block 512. The screw shaft 516 and the threaded hole of the integrated block 512 form a spiral fit.

[0034] The working principle of the automatic turning device for a carpet assembly line disclosed by the present invention is as follows.

[0035] (i) Before work, place the blanket between the two clamping rods 311, and then use the elastic force of the spring 313 to drive the spring 313 to move, and clamp the blanket through the clamping rod 311. At the same time, adjust the spiral shaft 516 according to the height of the observer so that the magnifying glass 517 can see the blanket more clearly. Then, the motor 301 is started, and the motor 301 drives the rotating disk 303 to rotate. The rotating disk 303 drives the power mechanism 3 inspection mechanism 5 to move through the second connecting rod 304. The first connecting rod 305 drives the first gear 308 to rotate through the third connecting rod 307. The first gear 308 drives the fourth connecting rod 309 to rotate. The fourth connecting rod 309 drives the clamping rod 311 to rotate through the rotating plate 310, thereby driving the blanket to flip.

[0036] (ii) When the first gear 308 rotates, it drives the first rack 306 to reciprocate, and the first rack 306 drives the second gear 401 to reciprocate, and then the second connecting rod 404 rotates back and forth, and the contact between the second connecting rod 404 and the first contact switch 405 and the second contact switch 406 controls the extension and retraction of the telescopic end of the electric cylinder 501, thereby driving the slider 502 to slide along the sliding groove 503, and the slider 502 drives the moving shaft 508 to slide along the inner wall of the limiting groove 202 through the curved rod 504, and drives the sticking cylinder 510 to move through the moving shaft 508, and drives the lint collector to collect broken hair and dust on the blanket through the moving shaft 508, and at the same time drives the magnifying glass 517 to move through the third connecting rod 506, and observes the details on the blanket through the magnifying glass 517, and when the third gear 505 contacts the second rack 507, it drives the third connecting rod 506 to rotate, and then lifts the magnifying glass 517 through the third connecting rod 506, so as to facilitate the replacement of the blanket.

Claims

1. An automatic turning device for a carpet production line, comprising a limiting mechanism (2), characterized in that: It also comprises a support mechanism (1), a power mechanism (3), a control mechanism (4) and an inspection mechanism (5), wherein the support mechanism (1) comprises a support frame (101) and a support assembly, wherein the support frame (101) is connected to the support assembly; the limiting mechanism (2) comprises a fixing frame (201) and a limiting assembly, wherein the fixing frame (201) is connected to the limiting assembly, and the limiting assembly is connected to the support assembly; The power mechanism (3) comprises a motor (301), a rotating plate (310), a clamping assembly and a reciprocating rotating assembly, wherein the motor (301) is connected to the reciprocating rotating assembly, the reciprocating rotating assembly is connected to the supporting assembly, the reciprocating rotating assembly is connected to the clamping assembly, the clamping assembly is connected to the rotating plate (310), and the rotating plate (310) is connected to the supporting assembly; The control mechanism (4) comprises a second connecting rod (404) and a control assembly, wherein the second connecting rod (404) is connected to the control assembly, and the control assembly is connected to the support assembly; The inspection mechanism (5) comprises a sticking cylinder (510), a magnifying glass (517), a driving component and an adjusting component, wherein the driving component is connected to the sticking cylinder (510), the driving component is connected to the control component, the driving component is connected to the adjusting component, and the adjusting component is connected to the magnifying glass (517); Two support frames (101) are provided, and the support assembly comprises a lower connecting rod (102). The two support frames (101) are connected via the lower connecting rod (102). An upper connecting rod (103) is fixedly mounted on each support frame (101), and two first intermediate rods (104) are fixedly mounted symmetrically between the two upper connecting rods (103); A limiting groove (202) is provided on the side of the fixing frame (201), and the limiting assembly comprises a fixing rod (205), the fixing rod (205) is fixedly mounted on the side of the fixing frame (201), a second intermediate rod (204) is fixedly mounted on the side of the fixing rod (205), a first connecting rod (203) is fixedly mounted on the side of the second intermediate rod (204), the radius of the second intermediate rod (204) is smaller than the radius of the first connecting rod (203) and the fixing rod (205), and the first connecting rod (203) is connected to the control assembly; The reciprocating rotating assembly comprises a motor bracket (302), the motor (301) is fixedly mounted on the motor bracket (302), the motor bracket (302) is fixedly mounted on the lower side of the upper connecting rod (103), a rotating disk (303) is fixedly mounted on the output end of the motor (301), a second connecting rod (304) is fixedly mounted on the side of the rotating disk (303), a first connecting rod (305) is rotatably mounted on the outer surface of the second connecting rod (304), a third connecting rod (307) is rotatably mounted on the outer surface of the first connecting rod (305), a first gear (308) is fixedly mounted on the side of the third connecting rod (307), and the first gear (308) is rotatably mounted on the upper connecting rod (103); The clamping assembly comprises a fourth connecting rod (309), and the fourth connecting rod (309) is fixedly mounted on a side of the first gear (308); The fourth connecting rod (309) is rotatably connected to the upper connecting rod (103); a rotating plate (310) is fixedly mounted on the side of the fourth connecting rod (309); a clamping rod (311) is slidably mounted on the side of the rotating plate (310); a vertical shaft (312) is slidably mounted on the side of the clamping rod (311); a spring (313) is wound around the outer surface of the vertical shaft (312); one end of the spring (313) is fixedly mounted on the vertical shaft (312); the other end of the spring (313) is fixedly mounted on the clamping rod (311); a first rack (306) is slidably mounted on the side of the upper connecting rod (103); the first rack (306) is meshed with the first gear (308); The control assembly comprises a fixed block (403), the fixed block (403) is fixedly mounted on the upper side of the upper connecting rod (103), a fifth connecting shaft (402) is rotatably mounted on the side of the fixed block (403), a second gear (401) is fixedly mounted on the outer surface of the fifth connecting shaft (402), and the second gear (401) is meshed with the first rack (306); A sliding groove (503) is provided on the upper side of the first intermediate rod (104), an electric cylinder (501) is fixedly mounted on the inner wall of the sliding groove (503), and the electric cylinder (501) is respectively engaged with the first contact switch (405) and the second contact switch (406); A second connecting rod (404) is fixedly mounted on the outer surface of the fifth connecting shaft (402), and a first contact switch (405) and a second contact switch (406) are fixedly mounted on the upper side of the upper connecting rod (103); A movable shaft (508) is fixedly mounted on the side of the curved rod (504), the movable shaft (508) is slidably mounted on the inner wall of the limiting groove (202), a vertical plate (509) is fixedly mounted on the outer surface of the movable shaft (508), a sticking cylinder (510) is fixedly mounted on the side of the vertical plate (509), and a hair sticking device is mounted on the sticking cylinder (510); The driving assembly comprises a slider (502), the slider (502) is slidably mounted on the inner wall of the sliding groove (503), and a curved rod (504) is fixedly mounted on the upper side of the slider (502); The adjustment assembly comprises a third gear (505), the third gear (505) is rotatably mounted on the outer surface of the curved rod (504), a second rack (507) is fixedly mounted on the outer surface of the second intermediate rod (204), and the third gear (505) is meshed with the second rack (507).

2. The automatic turning device for a carpet assembly line according to claim 1, characterized in that: The first contact switch (405) controls the telescopic end of the electric cylinder (501) to extend, and the second contact switch (406) controls the telescopic end of the electric cylinder (501) to retract.

3. The automatic turning device for a carpet assembly line according to claim 1, characterized in that: A third connecting rod (506) is fixedly mounted on the side of the third gear (505), and the third connecting rod (506) is rotatably connected to the bent rod (504). A rotating shaft (511) is rotatably mounted on one end of the third connecting rod (506) away from the bent rod (504). An integral block (512) is rotatably mounted on the outer surface of the sticking cylinder (510), and a sliding block (513) is slidably mounted on the integral block (512). A mounting block (514) is fixedly mounted on the lower side of the sliding block (513), and an adjusting block (515) is fixedly mounted on the upper side of the sliding block (513). The adjusting block (515) is slidably connected to the integral block (512). A magnifying glass (517) is fixedly mounted on the side of the mounting block (514). A threaded hole is provided on the side of the integral block (512), and a spiral shaft (516) is mounted in the threaded hole of the integral block (512). The spiral shaft (516) and the threaded hole of the integral block (512) form a spiral fit.

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