Uniform sizing equipment for recycled paper for fireworks

Abstract

The invention discloses recycled paper uniform sizing equipment for fireworks, and relates to the technical field of firework production, the recycled paper uniform sizing equipment comprises a processing table, mounting plates are fixedly arranged at the top of the processing table, slurry barrels containing slurry are mounted at the tops of the two mounting plates, and a sizing mechanism and an adjusting mechanism for controlling the sizing amount are arranged between the two mounting plates; a first cleaning plate and a second cleaning plate which have a cleaning function are mounted between the two mounting plates, a liquid level meter is inserted into the slurry barrel, a liquid inlet is formed in one side of the slurry barrel and connected with a liquid supplementing pipe, and the other end of the liquid supplementing pipe is communicated with the liquid outlet end of the liquid pump. According to the slurry coating device, the bolt pair is screwed to drive the bearing seat to move, the distance between the limiting roller and the coating belt can be adjusted, the amount of falling slurry can be conveniently controlled according to the requirement of a user, meanwhile, the rotating coating belt is matched, the slurry between the limiting roller and the coating belt is evenly coated on the surface of the coating belt, and the coating efficiency is improved. And the coating belt uniformly coats the recycled paper with the slurry subsequently, so that the purpose of uniform and automatic sizing is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of fireworks production, and in particular to a device for uniformly sizing recycled paper for fireworks. Background Art

[0002] Fireworks are pyrotechnic entertainment products that use pyrotechnic powder to produce sound, light, color and other effects through combustion or explosion for viewing. They are an important part of folk customs. At present, my country is the world's largest producer, exporter and consumer of fireworks, and the output of fireworks accounts for 90% of the global output. The production process of the fireworks paper tube on the outer layer of fireworks is relatively complicated. One of the processing steps is to manually sizing the paper and then roll it. The use of manual sizing not only increases the workload of operators, but also has low sizing efficiency. Summary of the invention

[0003] In order to solve the problems of the prior art, the present invention provides a device for uniformly sizing recycled paper for fireworks, comprising a processing table, a mounting plate is fixedly arranged on the top of the processing table, a slurry barrel containing slurry is installed on the top of two mounting plates, a sizing mechanism and an adjusting mechanism for controlling the sizing amount are arranged between the two mounting plates, a first cleaning plate and a second cleaning plate with a cleaning function are installed between the two mounting plates, and a collecting mechanism for collecting slurry is arranged below the second cleaning plate;

[0004] A liquid level meter is inserted into the slurry barrel, a liquid inlet is provided on one side of the slurry barrel, the liquid inlet is connected to a liquid replenishing tube, the other end of the liquid replenishing tube is connected to the liquid outlet of the liquid pump, the liquid inlet of the liquid pump is connected to the liquid outlet of the storage barrel storing the slurry through a pipeline, the slurry barrel senses the internal liquid level through the liquid level meter and pumps the slurry in the storage barrel into the slurry barrel through the liquid pump;

[0005] A hollow base is arranged below the processing table, and a lifting mechanism for lifting the processing table in a vertical direction is arranged inside the base.

[0006] A further solution is that the two groups of the adjustment mechanisms are symmetrically arranged on the corresponding mounting plates, and the two mounting plates are symmetrically provided with threaded holes and sliding grooves.

[0007] A further solution is that the adjustment mechanism includes bolts, one end of the two bolts respectively passes through the corresponding threaded holes and is connected to the bearings, the outer rings of the two bolts are both covered with bearing seats, and a limiting roller is arranged between the two bearing seats.

[0008] A further solution is that the sizing mechanism includes rollers, outer rings of two of the rollers are sleeved with coating belts, and a protruding end of one of the rollers is connected to a servo motor.

[0009] A further solution is that the collecting mechanism comprises a slide plate, and a collecting box is arranged on the slide plate.

[0010] A slide bar is welded on the bottom of the collecting box, and a heater is installed on one side of the slide plate.

[0011] A further solution is that a sliding rod is vertically fixed inside the liquid level meter, a through hole corresponding to the left and right sides of the sliding rod is vertically opened in the middle of one side of the liquid level meter, a sliding sleeve is sleeved on the outside of the sliding rod and slidably connected with the sliding rod, a buoy is fixed in the middle of the left side of the sliding sleeve, and a plurality of equidistantly arranged floating bags are fixed at the bottom of the buoy;

[0012] Signal boxes are fixed on the front and rear sides of the inner wall of the opening, and an arc-shaped groove is opened at the lower part of the inner side of the signal box, a touch ball is movably embedded in the arc-shaped groove, an arc-shaped sheet is arranged in the middle of the bottom of the arc-shaped groove, a spring rod is arranged between the arc-shaped sheet and the bottom of the arc-shaped groove, and the spring rod movably passes through the bottom of the arc-shaped groove and extends to the lower part of the signal box.

[0013] A further solution is that the left side of the buoy passes through the left side of the outlet, and a plurality of balls are rollingly connected between the sliding sleeve and the sliding rod.

[0014] A further solution is that every two adjacent signal boxes correspond to each other, the inner side of the touch ball protrudes from the inner side of the signal box, and the distance between the two corresponding touch balls is smaller than the maximum width of the buoy, and the buoy is located between the two corresponding signal boxes.

[0015] A further solution is that an inner end of the spring rod is fixed to an outer side of the arc-shaped piece, and the arc-shaped piece is parallel to the middle part of the outer side that touches the ball.

[0016] A signal transmitter is installed on the upper part of the signal box, and a switch is electrically connected to the lower part of the inner side of the signal transmitter, and the switch corresponds to the outer end of the spring rod in front and back;

[0017] The signal transmitter is electrically connected to the liquid pump.

[0018] A further solution is that the lifting mechanism includes a driving motor and a bidirectional screw, one end of the bidirectional screw is fixed to an inner wall of one side of the base through a bearing seat, and the other end of the bidirectional screw passes through the inner wall of the other side of the base and is connected to the power output shaft of the driving motor;

[0019] The two ends of the bidirectional screw rod are respectively provided with threaded sleeves through threaded engagement, the tops of the two threaded sleeves are hinged to one end of the first connecting rod, the other end of the first connecting rod passes through the top of the base and is hinged to the bottom of the processing table; the bottoms of the threaded sleeves are hinged to one end of the second connecting rod, and the other end of the second connecting rod is hinged to the inner bottom of the base.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention can adjust the distance between the limiting roller and the coating belt by turning the bolt to drive the bearing seat to move, so as to control the amount of falling slurry according to user needs. At the same time, the slurry between the two is evenly coated on the surface of the coating belt in cooperation with the rotating coating belt, so that the coating belt can subsequently evenly coat the slurry on the recycled paper, thereby achieving the purpose of uniform and automatic sizing.

[0022] The present invention can monitor and alarm the liquid level in the slurry barrel through the signal box, so as to facilitate timely liquid replenishment. When the buoy floats between the two corresponding front and rear signal boxes according to the liquid level, since the spacing between the two corresponding front and rear touch balls is smaller than the maximum width of the buoy, the buoy will squeeze the two corresponding front and rear touch balls outward and squeeze them into the arc groove. At this time, the arc sheet will receive the squeezing force of the touch balls and push the spring rod outward. Since the switch corresponds to the outer end of the spring rod, when the spring rod pushes outward, it will contact the switch and trigger the switch, so that the corresponding signal transmitter is turned on, and the signal is transmitted to the liquid pump through the signal transmitter. The liquid pump can timely pump the slurry from the storage barrel into the slurry barrel, so that the slurry in the slurry barrel can be automatically replenished in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the structure of a device for uniformly sizing recycled paper for fireworks provided by an embodiment of the present invention;

[0024] Figure 2 A schematic diagram of the structure of a mounting plate provided in an embodiment of the present invention;

[0025] Figure 3 A schematic diagram of the structure of the main view of the liquid level meter provided in an embodiment of the present invention;

[0026] Figure 4 A schematic diagram of the structure of a liquid level meter provided in an embodiment of the present invention from the left side;

[0027] Figure 5 for Figure 4 The schematic diagram of the structure after the enlargement of A in the middle;

[0028] Figure 6 A schematic diagram of the structure of a rear view of a mounting plate provided in an embodiment of the present invention;

[0029] Figure 7 A schematic diagram of the structure of a sliding sleeve and a sliding rod provided in an embodiment of the present invention;

[0030] Figures marked: 1-processing table; 10-mounting plate; 11-first cleaning plate; 12-second cleaning plate; 2-slurry barrel; 300-rotating roller; 301-coating belt; 302-servo motor; 310-bolt; 311-bearing seat; 312-limiting roller; 32-collecting mechanism; 320-slide plate; 321-slide bar; 322-collecting box; 323-heater; 4-liquid level gauge; 40-slide bar; 4 1-through port; 42-sleeve; 43-buoy; 44-float; 45-signal box; 450-signal transmitter; 451-switch; 46-arc groove; 47-touch ball; 48-arc sheet; 49-spring rod; 50-liquid infusion tube; 51-liquid pump; 52-storage barrel; 6-base; 60-drive motor; 61-bidirectional screw rod; 62-threaded sleeve; 63-first connecting rod; 64-second connecting rod. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0032] like Figure 1-7 As shown, one embodiment of the present invention discloses a device for uniformly sizing recycled paper for fireworks, comprising a processing table 1, a mounting plate 10 is fixedly arranged on the top of the processing table 1, a slurry barrel 2 containing slurry is installed on the top of two mounting plates 2, and a sizing mechanism and an adjusting mechanism for controlling the sizing amount are arranged between the two mounting plates 10;

[0033] A first cleaning plate 11 and a second cleaning plate 12 with a cleaning function are installed between the two mounting plates 10. The two ends of the first cleaning plate 7 and the second cleaning plate 8 are welded to the opposite surfaces of the two mounting plates. The first cleaning plate is in an inclined state and is located at the upper right of the limiting roller; the second cleaning plate is in a straight state and is located below the other rotating roller, and the outer surface of the coating belt is in contact with one side of the second cleaning plate, so as to facilitate cleaning of the glue adhered to the surface of the coating belt; when the coating belt is coating the slurry, the rotating coating belt can be scraped off the slurry adhered to its outer surface under the action of the second cleaning plate, thereby completing the coating. The outer surface of the coating belt is cleaned to prevent the slurry adhering to the coating belt from affecting the coating work, and the slurry adhering to the outer surface of the coating belt can be cleaned in time to prevent it from solidifying and being difficult to clean, reducing the amount of cleaning by the staff. However, when the slurry on the limiting roller needs to be cleaned, the bearing seat is driven to move in the direction of the upward slurry mechanism by rotating the bolt, so that the limiting roller is in contact with the coating belt, and the limiting roller is rotated when passing through the rotating coating belt, thereby making the limiting roller rotate, and cooperate with the first cleaning plate to complete the surface slurry cleaning work, so that the scraped slurry is attached to the coating belt.

[0034] By turning the bolt 51 to drive the bearing seat 52 to move, the distance between the limiting roller 53 and the coating belt 42 can be adjusted, so as to control the amount of falling glue according to user needs. At the same time, with the rotating coating belt 42, the glue between the two is evenly coated on the surface of the coating belt 42, so that the coating belt 42 can subsequently evenly coat the glue on the plate, thereby achieving the purpose of evenly coating the glue and avoiding the adverse effects caused by uneven glue coating.

[0035] In this embodiment, two sets of adjustment mechanisms are symmetrically arranged on the corresponding mounting plates 10, and threaded holes and slide grooves are symmetrically opened on the two mounting plates 10. The adjustment mechanism includes bolts 310, one end of the two bolts 310 respectively penetrates the corresponding threaded holes and is connected to the bearing, the outer rings of the two bolts 310 are sleeved with bearing seats 311, and a limiting roller 312 is arranged between the two bearing seats 311. The sizing mechanism 30 includes rollers 300, the outer rings of the two rollers 300 are sleeved with coating belts 301, and the protruding end of one roller 300 is connected to a servo motor 302.

[0036] The embodiment of the present invention can achieve the adjustment of the distance between the limiting roller and the coating belt by screwing the bolts to drive the bearing seat to move, so as to control the amount of falling slurry according to the needs of the user, and at the same time cooperate with the rotating coating belt to evenly coat the slurry between the two on the surface of the coating belt, so that the coating belt can then evenly coat the slurry on the recycled paper, achieving the purpose of uniform sizing and avoiding the adverse effects of uneven slurry coating. At the same time, the two protruding ends of the limiting roller are respectively connected to the rotating ends of the two bearing seats, so that the limiting roller is easy to rotate with the assistance of the two bearing seats, which is conducive to driving the limiting roller to rotate through the rotating servo motor when the limiting roller is close to the outer surface of the coating belt, so as to facilitate the subsequent cleaning of the slurry.

[0037] A liquid level gauge 4 is inserted into the slurry barrel 2. A liquid inlet is provided on one side of the slurry barrel 2. The liquid inlet is connected to a liquid replenishing tube 50. The other end of the liquid replenishing tube 50 is connected to the liquid outlet of a liquid pump 51. The liquid inlet of the liquid pump 51 is connected to the liquid outlet of a storage barrel 52 storing slurry through a pipeline. The slurry barrel 2 senses the internal liquid level through the liquid level gauge 4 and pumps the slurry in the storage barrel 52 into the slurry barrel 2 through the liquid pump 51.

[0038] The above-mentioned arrangement can be used in the embodiment of the present invention to realize that after the sizing equipment performs sizing operation on recycled paper, the slurry in the slurry barrel will inevitably decrease, and the slurry in the slurry barrel needs to be replenished manually. The embodiment of the present invention installs a liquid level meter in the slurry barrel, and the liquid level meter can be used to monitor the liquid level in the slurry barrel at all times; when the liquid level in the slurry barrel is lower than the required liquid level, a signal can be sent to the liquid pump, and the liquid pump draws the slurry in the storage barrel into the slurry barrel until the liquid level in the slurry barrel rises to the normal liquid level, thereby realizing automatic replenishment of the slurry in the slurry barrel.

[0039] In this embodiment, the collecting mechanism 32 includes a slide plate 320 , on which a collecting box 321 is disposed, a sliding bar 322 is welded to the bottom of the collecting box 321 , and a heater 323 is installed on one side of the slide plate 320 .

[0040] The embodiment of the present invention can realize that the collection box is used to store the slurry scraped from the coating belt through the above arrangement, so as to recycle and reuse the slurry and prevent waste of resources. At the same time, the collection box is heated by starting the heater to prevent the slurry collected in the collection box from solidifying.

[0041] In this embodiment, a slide bar 40 is vertically fixed inside the liquid level gauge 4, a through hole 41 corresponding to the left and right sides of the slide bar 40 is vertically opened in the middle of one side of the liquid level gauge 4, a sliding sleeve 42 is sleeved on the outside of the slide bar 40 to be slidably connected thereto, a buoy 43 is fixed in the middle of the left side of the sliding sleeve 42, and a plurality of equidistantly arranged floating bags 44 are fixed at the bottom of the buoy 43;

[0042] Signal boxes 45 are fixed on the front and rear sides of the inner wall of the opening 41. An arc-shaped groove 46 is opened at the lower part of the inner side of the signal box 45. A touch ball 47 is movably embedded in the arc-shaped groove 46. An arc-shaped piece 48 is arranged in the middle of the bottom of the arc-shaped groove 46. A spring rod 49 is arranged between the arc-shaped piece 48 and the bottom of the arc-shaped groove 46. The spring rod 49 movably passes through the bottom of the arc-shaped groove 46 and extends to the lower part of the inside of the signal box 45.

[0043] The embodiment of the present invention sets a buoy so that the buoyancy of the buoy in the liquid can be enhanced by the float bag, so that the buoy can accurately float on the liquid surface. According to the liquid level in the slurry barrel, the buoy will slowly float to the surface of the water and slide up and down along the slide rod through the sleeve. The ball between the sleeve and the slide rod can assist the sleeve in sliding on the surface of the slide rod, making it easier for the sleeve to float up and down and reducing resistance.

[0044] In this embodiment, the left side of the buoy 43 passes through the left side of the outlet 41, and a plurality of balls are rollingly connected between the sleeve 42 and the slide rod 40. Each two adjacent signal boxes 45 correspond to each other, and the inner side of the touch ball 47 protrudes from the inner side of the signal box 45, and the distance between the two corresponding touch balls 47 is smaller than the maximum width of the buoy 43, and the buoy 43 is located between the two corresponding signal boxes 45. The inner end of the spring rod 49 is fixed to the outer side of the arc piece 48, and the arc piece 48 is parallel to the middle of the outer side of the touch ball 47. A signal transmitter 450 is installed on the upper part of the signal box 45, and a switch 451 is electrically connected to the lower inner side of the signal transmitter 450, and the switch 451 corresponds to the outer end of the spring rod 49; the signal transmitter 450 is electrically connected to the liquid pump 51.

[0045] The embodiment of the present invention can monitor and alarm the liquid level in the slurry barrel through the signal box through the above-mentioned setting, so as to facilitate timely liquid replenishment. When the buoy floats between the two corresponding front and rear signal boxes according to the liquid level, since the spacing between the two corresponding front and rear touch balls is smaller than the maximum width of the buoy, the buoy will squeeze the two corresponding front and rear touch balls outward and squeeze them into the arc groove. At this time, the arc sheet will receive the squeezing force of the touch balls and push the spring rod outward. Since the switch corresponds to the outer end of the spring rod, when the spring rod pushes outward, it will contact the switch and trigger the switch, so that the corresponding signal transmitter is turned on, and the signal is transmitted to the liquid pump through the signal transmitter. The liquid pump can timely pump the slurry from the storage barrel into the slurry barrel, so that the slurry in the slurry barrel can be automatically replenished in time.

[0046] In this embodiment, a hollow base 6 is provided below the processing table 1, and a lifting mechanism for lifting the processing table 1 in the vertical direction is provided in the base 6. The lifting mechanism includes a driving motor 60 and a bidirectional screw 61, one end of the bidirectional screw 61 is fixed to an inner wall of one side of the base 6 through a bearing seat, and the other end of the bidirectional screw 61 passes through the inner wall of the other side of the base 6 and is connected to the power output shaft of the driving motor 60;

[0047] The two ends of the bidirectional screw rod 61 are respectively provided with a threaded sleeve 62 through a threaded screw connection, the top of the two threaded sleeves 62 are hinged to one end of the first connecting rod 63, the other end of the first connecting rod 63 passes through the top of the base 6 and is hinged to the bottom of the processing table 1; the bottom of the threaded sleeve 62 is hinged to one end of the second connecting rod 64, and the other end of the second connecting rod 64 is hinged to the inner bottom of the base 6.

[0048] The embodiment of the present invention can be realized through the above-mentioned arrangement by starting the driving motor. The power output shaft of the driving motor drives the bidirectional screw to rotate synchronously by forward or reverse rotation. The rotation of the bidirectional screw causes the two threaded sleeves to move toward each other or move away from each other on the bidirectional screw. When the two threaded sleeves move toward each other, the experimental table plate is driven to move vertically downward; when the two threaded sleeves move in opposite directions away from each other, the experimental table plate is driven to move vertically upward, thereby realizing the height adjustment of the processing table, and then realizing the adjustment of the sizing equipment of the embodiment of the present invention, so that the sizing equipment of this embodiment can be adapted to operators of different heights for use.

[0049] Finally, it should be noted that the above only describes in detail the specific embodiments of the present invention. However, the present invention is not limited to the specific embodiments described above. Equivalent modifications and substitutions made by those skilled in the art to the present invention are also within the scope of the present invention. Therefore, equal changes and modifications made without departing from the spirit and scope of the present invention are all within the scope of the present invention.

Claims

1. A device for uniformly sizing recycled paper for fireworks, comprising a processing table (1), characterized in that: A mounting plate (10) is fixedly arranged on the top of the processing table (1), a slurry barrel (2) containing slurry is installed on the top of the two mounting plates (2), a slurry application mechanism and an adjustment mechanism for controlling the amount of slurry application are arranged between the two mounting plates (10), a first cleaning plate (11) and a second cleaning plate (12) having a cleaning function are installed between the two mounting plates (10), and a collecting mechanism (32) for collecting slurry is arranged below the second cleaning plate (12); A liquid level meter (4) is inserted into the slurry barrel (2), a liquid inlet is provided on one side of the slurry barrel (2), the liquid inlet is connected to a liquid replenishing tube (50), the other end of the liquid replenishing tube (50) is connected to the liquid outlet of a liquid pump (51), the liquid inlet of the liquid pump (51) is connected to the liquid outlet of a storage barrel (52) storing slurry through a pipeline, the slurry barrel (2) senses the internal liquid level through the liquid level meter (4) and pumps the slurry in the storage barrel (52) into the slurry barrel (2) through the liquid pump (51); A hollow base (6) is arranged below the processing table (1), and a lifting mechanism for lifting the processing table (1) in a vertical direction is arranged inside the base (6).

2. The uniform sizing device for recycled paper for fireworks according to claim 1, characterized in that: The two groups of adjustment mechanisms are symmetrically arranged on the corresponding mounting plates (10), and the two mounting plates (10) are symmetrically provided with threaded holes and sliding grooves.

3. The uniform sizing device for recycled paper for fireworks according to claim 1, characterized in that: The adjustment mechanism comprises bolts (310), one end of the two bolts (310) respectively passes through corresponding threaded holes and is connected to the bearing, the outer rings of the two bolts (310) are both sleeved with bearing seats (311), and a limiting roller (312) is arranged between the two bearing seats (311).

4. The uniform sizing device for recycled paper for fireworks according to claim 1, characterized in that: The sizing mechanism comprises rollers (300), the outer rings of two rollers (300) are sleeved with coating belts (301), and the protruding end of one roller (300) is connected to a servo motor (302).

5. The uniform sizing device for recycled paper for fireworks according to claim 1, characterized in that: The collecting mechanism (32) comprises a slide plate (320), a collecting box (321) is arranged on the slide plate (320), a sliding bar (322) is welded to the bottom of the collecting box (321), and a heater (323) is installed on one side of the slide plate (320).

6. The uniform sizing device for recycled paper for fireworks according to claim 1, characterized in that: A slide bar (40) is vertically fixed inside the liquid level meter (4), a through hole (41) corresponding to the left and right sides of the slide bar (40) is vertically opened in the middle of one side of the liquid level meter (4), a sliding sleeve (42) slidably connected to the slide bar (41) is sleeved on the outside, a buoy (43) is fixed in the middle of the left side of the sliding sleeve (42), and a plurality of equidistantly arranged floating bags (44) are fixed at the bottom of the buoy (43); A signal box (45) is fixed to the front and rear sides of the inner wall of the through hole (41); an arc-shaped groove (46) is opened at the lower part of the inner side of the signal box (45); a touch ball (47) is movably embedded in the arc-shaped groove (46); an arc-shaped sheet (48) is arranged in the middle of the bottom of the arc-shaped groove (46); a spring rod (49) is arranged between the arc-shaped sheet (48) and the bottom of the arc-shaped groove (46); the spring rod (49) movably passes through the bottom of the arc-shaped groove (46) and extends to the lower part of the inside of the signal box (45).

7. The device for uniformly sizing recycled paper for fireworks according to claim 6, characterized in that: The left side of the buoy (43) passes through the left side of the outlet (41), and a plurality of balls are rollingly connected between the sliding sleeve (42) and the sliding rod (40).

8. The uniform sizing device for recycled paper for fireworks according to claim 6, characterized in that: Each two adjacent signal boxes (45) correspond to each other, the inner side of the touch ball (47) protrudes from the inner side of the signal box (45), and the distance between the two corresponding touch balls (47) is smaller than the maximum width of the buoy (43), and the buoy (43) is located between the two corresponding signal boxes (45).

9. The device for uniformly sizing recycled paper for fireworks according to claim 6, characterized in that: The inner end of the spring rod (49) is fixed to the outer side of the arc-shaped piece (48), and the arc-shaped piece (48) is parallel to the middle part of the outer side of the contact ball (47). A signal transmitter (450) is installed on the upper part of the signal box (45), and a switch (451) is electrically connected to the lower part of the inner side of the signal transmitter (450), and the switch (451) corresponds to the outer end of the spring rod (49) in front and back; The signal transmitter (450) is electrically connected to the liquid pump (103).

10. The device for uniformly sizing recycled paper for fireworks according to claim 1, characterized in that: The lifting mechanism comprises a driving motor (60) and a bidirectional screw rod (61), one end of the bidirectional screw rod (61) is fixed to an inner wall of one side of the base (6) through a bearing seat, and the other end of the bidirectional screw rod (61) passes through the inner wall of the other side of the base (6) and is connected to a power output shaft of the driving motor (60); The two ends of the bidirectional screw rod (61) are respectively provided with a threaded sleeve (62) through a threaded screw connection, the tops of the two threaded sleeves (62) are hinged to one end of a first connecting rod (63), the other end of the first connecting rod (63) passes through the top of the base (6) and is hinged to the bottom of the processing table (1); the bottoms of the threaded sleeves (62) are hinged to one end of a second connecting rod (64), the other end of the second connecting rod (64) is hinged to the inner bottom of the base (6).

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