Suction device for removing a notebook computer housing

Abstract

The application belongs to the technical field of notebook computer production detection, and discloses an adsorption device for taking out a notebook computer shell, which comprises a mounting disc, a plurality of first sliding holes are formed in the top of the mounting disc, second sliding rods are fixedly connected to the inner walls of the first sliding holes, first springs are sleeved on the outer walls of the second sliding rods, positioning columns that can slide are sleeved on the outer walls of the second sliding rods, limiting sleeves that can slide are sleeved on the outer walls of the second sliding rods, swing arms are rotationally connected to the outer walls of the positioning columns, suction discs are fixedly connected to the ends of the swing arms, and a limiting assembly is mounted on the outer wall of the mounting disc. In the application, the position of the suction disc can be flexibly adjusted, so that notebook shells of different sizes and shapes can be taken out. On the other hand, the multi-point adsorption mode can more evenly distribute the force, reduce the risk of single-point stress, and facilitate the rapid taking out of the shell.

Description

TECHNICAL FIELD

[0001] The application relates to a notebook computer production detection technical field, in particular to a suction device for taking out a notebook computer shell. BACKGROUND

[0002] The notebook computer shell is an external protection layer of the notebook computer and is generally made of engineering plastics, magnesium-aluminum alloy or carbon fiber composite material and the like and has the characteristics of lightness, firmness and beauty. In the production process of the notebook computer shell, the suction device is used to take out the shell from the mold, thereby avoiding the tediousness and time consumption of manual shell taking and improving the production efficiency.

[0003] In the existing suction mode, manual operation is often relied on in the shell taking process, specifically, an operator directly sucks the notebook shell at a specific position by holding the suction cup, and then takes out the shell from the mold. Since the suction cup is usually only sucked at a single point of the shell, the force is too concentrated at the position, and the unbalanced force condition not only increases the risk of shell damage, but also cannot effectively take out the shell due to insufficient force. SUMMARY

[0004] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides a suction device for taking out a notebook computer shell, which can adapt to different sizes and shapes of notebook shells and take out the shells, and adopts a multi-point suction mode, can more evenly distribute the force, reduce the risk of single-point force, and facilitate rapid shell taking out.

[0005] In order to solve the above technical problems, the present application provides the following technical scheme: a suction device for taking out a notebook computer shell, comprising a mounting disc, a plurality of first sliding holes are formed in the top of the mounting disc, second sliding rods are fixedly connected to the inner walls of the first sliding holes, first springs are sleeved on the outer walls of the second sliding rods, positionable columns are slidably sleeved on the outer walls of the second sliding rods, limiting sleeves are slidably sleeved on the outer walls of the second sliding rods, swing arms are rotationally connected to the outer walls of the positionable columns, suction cups are fixedly connected to the end portions of the swing arms, a limiting assembly is mounted on the outer wall of the mounting disc, a clamping assembly is mounted on the inner wall of the positionable column, and the limiting assembly is used for fixing the clamping assembly.

[0006] Preferably, one end of the first spring is fixedly connected with the limiting sleeve, and the other end of the first spring is fixedly connected with the inner wall of the mounting disc.

[0007] Preferably, the limiting assembly comprises a movable rod penetrating through the mounting disc and being in sliding connection with the mounting disc, a third spring is sleeved on the outer wall of the movable rod, a tray is fixedly connected to the bottom of the movable rod, a plurality of connecting arms are fixedly connected to the outer wall of the movable rod, fourth sliding rods are fixedly connected to the inner wall of each connecting arm, a plurality of toothed plates are arranged above the mounting disc, supporting shafts are rotatably connected to the ends of the toothed plates, supporting blocks are fixedly connected to the two ends of the supporting shafts, the supporting blocks are fixedly connected to the mounting disc, second sliding holes are formed in the inner walls of the two sides of the toothed plates, fifth sliding rods are fixedly connected to the inner walls of the second sliding holes, the fifth sliding rods penetrate through the fourth sliding rods and are in sliding connection with the fourth sliding rods, and fourth springs are sleeved on the outer walls of the fifth sliding rods.

[0008] Preferably, one end of the third spring is fixedly connected to the bottom of the mounting disc, and the other end of the third spring is fixedly connected to the tray.

[0009] Preferably, one end of the fourth spring is fixedly connected to the toothed plate, and the other end of the fourth spring is fixedly connected to the fourth sliding rod.

[0010] Preferably, the clamping assembly comprises a clamping column, a clamping groove is formed in the end of the clamping column, the clamping groove is in clamping connection with the bottom of the toothed plate, two second sliding blocks are fixedly connected to the outer wall of the positioning column, third sliding rods are in penetrating and sliding connection with the inner walls of the two second sliding blocks, and second springs are sleeved on the outer walls of the third sliding rods.

[0011] Preferably, an expansion groove is formed in the inner wall of the positioning column, two second sliding grooves are formed in the inner wall of the expansion groove, the two ends of the third sliding rod are fixedly connected to the inner walls of the second sliding grooves, and the clamping column is in sliding connection with the inner wall of the expansion groove.

[0012] Preferably, one end of the second spring is fixedly connected to the positioning column, and the other end of the second spring is fixedly connected to the second sliding block.

[0013] Preferably, a gear ring is fixedly connected to the outer wall of the mounting disc, supporting plates are fixedly connected to the top of each swing arm, clamping rods are in penetrating and sliding connection with the inner walls of the supporting plates, fifth springs are sleeved on the outer walls of the clamping rods, the clamping rods are in clamping connection with the gear ring, one end of the fifth spring is fixedly connected to the supporting plate, and the other end of the fifth spring is fixedly connected to the clamping rod.

[0014] Preferably, it further includes a mounting seat, the inner wall of the mounting seat is fixedly connected with a support, the top of the support is fixedly connected with an electric push rod, the output end of the electric push rod penetrates through the support and is slidably connected with the support, the output end of the electric push rod is fixedly connected with a connecting shaft, the bottom of the connecting shaft is fixedly connected with a mounting disc, a plurality of first sliding grooves are formed in the top of the mounting seat, a bidirectional threaded rod is rotatably connected with the inner wall of the first sliding groove located in the middle, the end of the bidirectional threaded rod penetrates through the mounting seat and extends to the outer side of the mounting seat, a knob is fixedly connected with the outer end of the bidirectional threaded rod, a threaded block is slidably connected with the inner wall of the first sliding groove located in the middle, the two ends of the bidirectional threaded rod penetrate through the threaded block and are threadedly connected with the threaded block, the inner wall of the first sliding groove located on the two sides is slidably connected with two first sliding blocks, the top of the two threaded blocks is fixedly connected with a positioning plate, the inner wall of the positioning plate is fixedly connected with two first sliding rods, the inner wall of the positioning plate is slidably connected with a pressing plate, the end of the first sliding rod penetrates through the pressing plate and is slidably connected with the pressing plate, the top of the positioning plate is threadedly connected with an adjusting screw, the end of the adjusting screw is rotatably connected with the pressing plate, and the bottom of the positioning plate is fixedly connected with the first sliding block.

[0015] Compared with the prior art, the application has the following beneficial effects:

[0016] 1、In the application, through the cooperative work of the swing arm, the positioning column, the clamping column and the tooth plate, flexible adjustment of the position of the suction cup can be realized, thereby being able to adapt to the taking out of notebook shell bodies of different sizes and shapes, and adopting a multi-point adsorption mode can more evenly distribute the force, reduce the risk of single-point stress, and is also conducive to quickly taking out the shell.

[0017] 2、In the application, through pulling the swing arm outward and compressing the spring, and through the interaction of the clamping column and the tooth plate, the position of the suction cup can be locked, ensuring the stability and reliability of the suction cup during the adsorption process.

[0018] 3、In the application, by pressing the tray upward, the movable rod slides upward, the movable rod drives the connecting arm to move, and then drives the fourth sliding rod to move, the fourth sliding rod drives the tooth plate to rotate around the fulcrum, so that the tooth plate is disengaged from the clamping of the clamping column, and under the elastic force of the first spring, the plurality of clamping columns can quickly reset, and the operation efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor.

[0020] Figure 1The schematic view of the overall structure of the embodiment one of the present application;

[0021] Figure 2 The schematic view of the mounting structure of the suction cup in the embodiment one of the present application;

[0022] Figure 3 The schematic view of the structure of the mounting disc in the embodiment one of the present application;

[0023] Figure 4 The schematic view of the mounting structure of the swing arm in the embodiment one of the present application;

[0024] Figure 5 The schematic view of the mounting structure of the clamping column in the embodiment one of the present application;

[0025] Figure 6 The schematic view of the mounting structure of the toothed plate in the embodiment one of the present application;

[0026] Figure 7 The schematic view of the mounting structure of the clamping rod in the embodiment one of the present application;

[0027] Figure 8 The schematic view of the mounting structure of the fourth sliding rod in the embodiment one of the present application

[0028] Figure 9 The schematic view of the overall structure of the embodiment two of the present application;

[0029] Figure 10 The schematic view of the mounting structure of the positioning plate in the embodiment two of the present application.

[0030] Explanation of the reference numerals in the drawing: 1, mounting seat; 2, first sliding groove; 3, bidirectional threaded rod; 4, knob; 5, threaded block; 6, positioning plate; 7, first sliding block; 8, first sliding rod; 9, pressing plate; 10, adjusting screw rod; 11, support; 12, electric push rod; 13, connecting shaft; 14, mounting disc; 15, first sliding hole; 16, gear ring; 17, second sliding rod; 18, first spring; 19, positioning column; 20, limiting sleeve; 21, telescopic groove; 22, second sliding groove; 23, second sliding block; 24, third sliding rod; 25, second spring; 26, clamping column; 27, clamping groove; 28, toothed plate; 29, suction cup; 30, movable rod; 31, third spring; 32, tray; 33, connecting arm; 34, fourth sliding rod; 35, supporting block; 36, supporting shaft; 37, swing arm; 38, second sliding hole; 39, fifth sliding rod; 40, fourth spring; 41, supporting plate; 42, clamping rod; 43, fifth spring. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. The specific embodiments of the present invention are described in detail below in conjunction with the drawings in the specification.

[0032] Example 1, as Figures 1-8 As shown, this embodiment provides a technical solution: an adsorption device for removing the laptop computer shell, including a bracket 11, an electric push rod 12 is fixedly connected to the top of the bracket 11, the output end of the electric push rod 12 passes through the bracket 11 and is slidably connected thereto, the output end of the electric push rod 12 is fixedly connected to a connecting shaft 13, the bottom of the connecting shaft 13 is fixedly connected to a mounting plate 14, a plurality of first sliding holes 15 are opened on the top of the mounting plate 14, the inner walls of the first sliding holes 15 are fixedly connected to second sliding rods 17, the outer walls of the second sliding rods 17 are sleeved with first springs 18, the outer walls of the second sliding rods 17 are sleeved with slidable positioning columns 19, the outer walls of the second sliding rods 17 are sleeved with slidable limiting sleeves 20, one end of the first spring 18 is fixedly connected to the limiting sleeve 20, and the first spring The other end of the spring 18 is fixedly connected to the inner wall of the mounting plate 14, and the outer wall of the positioning column 19 is rotatably connected to the swing arm 37. The end of the swing arm 37 is fixedly connected to the suction cup 29. A limiting assembly is installed on the outer wall of the mounting plate 14, and a clamping assembly is installed on the inner wall of the positioning column 19. The limiting assembly is used to fix the clamping assembly; by pulling the swing arm 37 outward, the swing arm 37 drives the positioning column 19 to slide along the second slide rod 17, and the swing arm 37 compresses the first spring 18 through the limiting sleeve 20. The movement of the positioning column 19 causes the end of the clamping column 26 to slide along the bottom of the tooth plate 28. Under the elastic force of the first spring 18 and the second spring 25, the clamping column 26 is clamped at the bottom of the tooth plate 28, so that the adjusted swing arm 37 can be quickly fixed.

[0033] The limiting assembly comprises a movable rod 30 which penetrates through the mounting disc 14 and is in sliding connection with the mounting disc 14, a third spring 31 is sleeved on the outer wall of the movable rod 30, a tray 32 is fixedly connected to the bottom of the movable rod 30, one end of the third spring 31 is fixedly connected to the bottom of the mounting disc 14, the other end of the third spring 31 is fixedly connected to the tray 32, a plurality of connecting arms 33 are fixedly connected to the outer wall of the movable rod 30, fourth sliding rods 34 are fixedly connected to the inner walls of the connecting arms 33, a plurality of toothed plates 28 are arranged above the mounting disc 14, supporting shafts 36 are rotatably connected to the ends of the toothed plates 28, supporting blocks 35 are fixedly connected to the two ends of the supporting shafts 36, the supporting blocks 35 are fixedly connected to the mounting disc 14, second sliding holes 38 are formed in the inner walls of the two sides of the toothed plates 28, fifth sliding rods 39 are fixedly connected to the inner walls of the second sliding holes 38, the fifth sliding rods 39 penetrate through the fourth sliding rods 34 and are in sliding connection with the fourth sliding rods 34, fourth springs 40 are sleeved on the outer walls of the fifth sliding rods 39, one end of the fourth spring 40 is fixedly connected to the toothed plate 28, and the other end of the fourth spring 40 is fixedly connected to the fourth sliding rod 34.

[0034] The clamping assembly comprises a clamping column 26, a clamping groove 27 is formed in the end of the clamping column 26, the clamping groove 27 is clamped and matched with the bottom of the toothed plate 28, two second sliding blocks 23 are fixedly connected to the outer wall of the positioning column 19, third sliding rods 24 are in through sliding connection with the inner walls of the two second sliding blocks 23, second springs 25 are sleeved on the outer walls of the third sliding rods 24, an expansion slot 21 is formed in the inner wall of the positioning column 19, two second sliding grooves 22 are formed in the inner wall of the expansion slot 21, the two ends of the third sliding rod 24 are fixedly connected to the inner walls of the second sliding grooves 22, the clamping column 26 is in sliding connection with the inner wall of the expansion slot 21, one end of the second spring 25 is fixedly connected to the positioning column 19, and the other end of the second spring 25 is fixedly connected to the second sliding block 23.

[0035] The outer wall of the mounting disc 14 is fixedly connected with a gear ring 16, the top of each swing arm 37 is fixedly connected with a supporting plate 41, a clamping rod 42 is in through sliding connection with the inner wall of the supporting plate 41, a fifth spring 43 is sleeved on the outer wall of the clamping rod 42, one end of the fifth spring 43 is fixedly connected to the supporting plate 41, and the other end of the fifth spring 43 is fixedly connected to the clamping rod 42, the end of the clamping rod 42 is clamped and matched with the gear ring 16.

[0036] When the shell needs to be taken out of the mold, the support 11 is installed at the corresponding position, the electric push rod 12 drives the mounting disc 14 to move through the connecting shaft 13, and the shell is adsorbed through the suction cups 29 on the mounting disc 14, so that the shell can be taken out.

[0037] Pull the swing arm 37 outward, the swing arm 37 drives the positioning column 19 to slide along the second sliding rod 17, the swing arm 37 compresses the first spring 18 through the limiting sleeve 20, when the positioning column 19 moves, the end of the clamping column 26 will slide along the bottom of the tooth plate 28, and under the elastic force of the first spring 18 and the second spring 25, the clamping column 26 is clamped at the bottom of the tooth plate 28, so as to fix the adjusted swing arm 37, and further adjust the position of the suction cup 29 to adapt to the size of the notebook shell of different sizes;

[0038] Press the tray 32 upward, the movable rod 30 slides upward, the connecting arm 33 is driven to move through the movable rod 30, the fourth sliding rod 34 is driven to move through the connecting arm 33, the tooth plate 28 is pushed to rotate around the fulcrum 36 through the fourth sliding rod 34, at this time, the tooth plate 28 is disengaged from the clamping of the clamping column 26, at this time, under the elastic force of the first spring 18, the plurality of clamping columns 26 can quickly reset;

[0039] Pull the clamping rod 42 outward, so that the clamping rod 42 is disengaged from the clamping of the tooth ring 16, rotate the swing arm 37, so that the swing arm 37 rotates around the positioning column 19, under the elastic force of the fifth spring 43, the tooth ring 16 is fixed through the clamping rod 42, and the position of the suction cup 29 is adjusted.

[0040] Embodiment two, this embodiment is further optimized on the basis of embodiment one, the same parts as the foregoing technical solutions will not be described here, such as Figure 9 and Figure 10As shown in, in order to facilitate the removal of the shell in maintenance, especially using the following settings: a kind of adsorption device for removing notebook computer shell, further comprising mounting seat 1, the inner wall of mounting seat 1 is fixedly connected with support 11, a plurality of first sliding slot 2 are formed in the top of mounting seat 1, bidirectional screw rod 3 is rotatably connected to the inner wall of first sliding slot 2 located in the middle, bidirectional screw rod 3 extends to the outside of mounting seat 1 through the end, knob 4 is fixedly connected to the outer end of bidirectional screw rod 3, screw block 5 is slidably connected to the inner wall of first sliding slot 2 located in the middle, bidirectional screw rod 3 extends through screw block 5 at both ends and is screw connected with it, the inner wall of first sliding slot 2 located at both sides is slidably connected with two first sliding blocks 7, the top of two screw blocks 5 is fixedly connected with positioning plate 6, the inner wall of positioning plate 6 is fixedly connected with two first sliding rods 8, the inner wall of positioning plate 6 is slidably connected with pressing plate 9, the end of first sliding rod 8 extends through pressing plate 9 and is slidably connected with it, adjusting screw 10 is screw connected to the top of positioning plate 6, adjusting screw 10 is rotatably connected to the end of pressing plate 9, the bottom of positioning plate 6 is fixedly connected with first sliding block 7. After the disassembly screw, the notebook is placed on the top of mounting seat 1, bidirectional screw rod 3 is rotated by rotating knob 4, two screw blocks 5 are slid along the inner wall of first sliding slot 2 respectively, positioning plate 6 is moved, positioning plate 6 drives first sliding block 7 to slide along the inner wall of first sliding slot 2, two positioning plates 6 are moved to the both sides of notebook computer shell, adjusting screw 10 is rotated, pressing plate 9 is pushed to slide downward along the outer wall of first sliding rod 8, the side edge of notebook is fixed, and then the shell is removed in maintenance.

[0041] It should be noted that the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0042] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A suction device for removing notebook computer housings, comprising a mounting plate (14), characterized in that: The first sliding hole (15) is provided with a second sliding rod (17) on the inner wall, the second sliding rod (17) is provided with a first spring (18) on the outer wall, the second sliding rod (17) is provided with a slidable positioning column (19) on the outer wall, the second sliding rod (17) is provided with a slidable limiting sleeve (20) on the outer wall, the positioning column (19) is rotatably connected with a swing arm (37) on the outer wall, the swing arm (37) is fixedly connected with a suction cup (29) on the end, the limiting assembly is installed on the outer wall of the mounting disc (14), and the clamping assembly is installed on the inner wall of the positioning column (19). One end of the first spring (18) is fixedly connected with the limiting sleeve (20), and the other end of the first spring (18) is fixedly connected with the inner wall of the mounting disc (14). The limiting assembly comprises a movable rod (30), the movable rod (30) penetrates through the mounting disc (14) and is slidably connected with the same, the movable rod (30) is provided with a third spring (31) on the outer wall, the movable rod (30) is fixedly connected with a tray (32) on the bottom, the movable rod (30) is fixedly connected with a plurality of connecting arms (33) on the outer wall, the connecting arm (33) is fixedly connected with a fourth sliding rod (34) on the inner wall, a plurality of toothed plates (28) are arranged above the mounting disc (14), the toothed plate (28) is rotatably connected with a support shaft (36) on the end, the support shaft (36) is fixedly connected with a support block (35) on both ends, the support block (35) is fixedly connected with the mounting disc (14) on the bottom, the toothed plate (28) is provided with a second sliding hole (38) on the inner wall on both sides, the second sliding hole (38) is fixedly connected with a fifth sliding rod (39) on the inner wall, the fifth sliding rod (39) penetrates through the fourth sliding rod (34) and is slidably connected with the same on the end, and the fifth sliding rod (39) is provided with a fourth spring (40) on the outer wall.

2. The suction device for removing a notebook computer case according to claim 1, wherein: One end of the third spring (31) is fixedly connected with the bottom of the mounting disc (14), and the other end of the third spring (31) is fixedly connected with the tray (32).

3. The suction device for removing a notebook computer housing according to claim 2, wherein: One end of the fourth spring (40) is fixedly connected with the toothed plate (28), and the other end of the fourth spring (40) is fixedly connected with the fourth sliding rod (34).

4. The suction device for removing a notebook computer case according to claim 3, wherein: The clamping assembly comprises a clamping column (26), the clamping column (26) is provided with a clamping groove (27) on the end, the clamping groove (27) is clamped and matched with the bottom of the toothed plate (28), the positioning column (19) is fixedly connected with two second sliding blocks (23) on the outer wall, the second sliding block (23) is slidably connected with a third sliding rod (24) on the inner wall in a penetrating mode, and the third sliding rod (24) is provided with a second spring (25) on the outer wall.

5. The suction device for removing a notebook computer housing according to claim 4, wherein: The inner wall of the positioning column (19) is provided with an expansion slot (21), the expansion slot (21) is provided with two second sliding grooves (22) on the inner wall, the third sliding rod (24) is fixedly connected with the inner wall of the second sliding groove (22) on both ends, and the clamping column (26) is slidably connected with the inner wall of the expansion slot (21).

6. The suction device for removing a notebook computer housing according to claim 5, wherein: One end of the second spring (25) is fixedly connected with the positioning column (19), and the other end of the second spring (25) is fixedly connected with the second sliding block (23).

7. The suction device for removing a notebook computer housing according to claim 6, wherein: The mounting disc (14) is fixedly connected with a gear ring (16) on the outer wall, the top of the swing arm (37) is fixedly connected with a support plate (41), the inner wall of the support plate (41) is slidably connected with a clamping rod (42) in a penetrating manner, the outer wall of the clamping rod (42) is sleeved with a fifth spring (43), the end of the clamping rod (42) is clamped and matched with the gear ring (16), one end of the fifth spring (43) is fixedly connected with the support plate (41), and the other end of the fifth spring (43) is fixedly connected with the clamping rod (42).

8. The suction device for removing a notebook computer housing according to claim 7, wherein: Further comprising a mounting seat (1), the inner wall of the mounting seat (1) is fixedly connected with a support (11), the top of the support (11) is fixedly connected with an electric push rod (12), the output end of the electric push rod (12) penetrates the support (11) and is slidably connected therewith, the output end of the electric push rod (12) is fixedly connected with a connecting shaft (13), the bottom of the connecting shaft (13) is fixedly connected with the mounting disc (14), a plurality of first sliding grooves (2) are formed in the top of the mounting seat (1), a bidirectional threaded rod (3) is rotatably connected to the inner wall of the first sliding groove (2) located in the middle portion, the end of the bidirectional threaded rod (3) penetrates the mounting seat (1) and extends to the outside thereof, a knob (4) is fixedly connected to the outer end of the bidirectional threaded rod (3), a threaded block (5) is slidably connected to the inner wall of the first sliding groove (2) located in the middle portion, the two ends of the bidirectional threaded rod (3) penetrate the threaded block (5) and are threadedly connected therewith, two first sliding blocks (7) are slidably connected to the inner wall of the first sliding groove (2) located on both sides, two first sliding blocks (7) are slidably connected to the inner wall of the first sliding groove (2) located on both sides, the top of the threaded block (5) is fixedly connected with a positioning plate (6), the inner wall of the positioning plate (6) is fixedly connected with two first sliding rods (8), the inner wall of the positioning plate (6) is slidably connected with a pressing plate (9), the end of the first sliding rod (8) penetrates the pressing plate (9) and is slidably connected therewith, the top of the positioning plate (6) is threadedly connected with an adjusting screw rod (10), the end of the adjusting screw rod (10) is rotatably connected with the pressing plate (9), and the bottom of the positioning plate (6) is fixedly connected with the first sliding block (7).

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