WO2022217787A1

WO2022217787A1 - Automatic feeding apparatus for natural rubber packing machine

Info

Publication number: WO2022217787A1
Application number: PCT/CN2021/109852
Authority: WO
Inventors: 李振华; 郭博睿; 孙世海; 白先权; 丁爱武; 张毅超
Original assignee: 海南天然橡胶产业集团股份有限公司; 海南中橡科技有限公司
Priority date: 2021-04-13
Filing date: 2021-07-30
Publication date: 2022-10-20

Abstract

An automatic feeding apparatus for a natural rubber packing machine, comprising a bracket (1), a telescopic frame (2), a movable frame (3), a drum (4), a pushing assembly and a feeding assembly. The telescopic frame (2) is connected to the bracket (1) by means of first telescopic members (5), and the movable frame (3) is connected to the telescopic frame (2) by means of a second telescopic member (6). The drum (4) is rotatably provided on the movable frame (3), and a plurality of troughs (41) for placing rubber sheets (7) are evenly distributed on the drum (4) along the circumferential direction. The pushing assembly is provided in the drum (4), and the pushing assembly performs telescopic movement by means of the rotation of the drum (4), so that when a trough (41) rotates to the bottom of the drum (4), the pushing assembly pushes a rubber sheet (7) out of the trough (41) and presses same on block rubber that needs to be replenished. The feeding assembly is provided on the movable frame (3), and the feeding assembly is in transmission connection with the drum (4), so that the feeding assembly pushes the rubber sheets (7) into the troughs (41). The apparatus effectively increases the feeding speed, solves the problem of manual feeding, has a high degree of automation, and further improves the replenishing efficiency of block rubber packing.

Description

An automatic feeding device for a natural rubber baler

technical field

The invention relates to the technical field of rubber baling and feeding, in particular to an automatic feeding device for a natural rubber baler.

Background technique

Natural rubber is a natural polymer compound with polyisoprene as the main component. The latex harvested from the rubber tree is diluted with impurities, then solidified with acid, then matured, creped, granulated, dried and packaged to obtain commercially available natural rubber. According to different manufacturing methods, general-purpose natural rubber can be divided into granular rubber, smoked sheet rubber, crepe sheet rubber, air-dried sheet rubber and technical grade standard rubber.

The finished product of natural rubber needs to go through various processes such as latex collection, purification, mixing, dilution, acid addition and solidification, rubber block curing, thinning, drying, weighing, packing, etc., to obtain rubber blocks that meet the weight requirements; Under the processing of the process, when it reaches the weighing process, due to the influence of various factors, the weight of the molded rubber block is prone to be lower than the standard weight. The labor cost is increased, and the feeding efficiency is low.

Patent No. CN201611018084.7 is an automatic feeding device for a baler of a natural rubber dry packaging production line. It is provided with a conveying device I, the two sides of the end of the conveying device I are respectively provided with an electric push rod I and an unpowered conveying roller I, and the end of the unpowered conveying roller I is provided with a standard plastic bag cutting device and a standard plastic bag cutting board. The two sides of the plastic bag cutting board are respectively provided with electric push rod II and unpowered conveying roller II. The top of the unpowered conveying roller II is provided with a glue feeding device, and the end of the unpowered conveying roller II is provided with a feeding cutting device. There is a guide groove under the cutting device; the baler feeding process of the rubber dry packaging production line is changed from manual operation to machine operation, which not only automates the feeding process of the baler, but also lays the foundation for the automation of the rubber dry packaging production line. The labor cost can be greatly saved; however, the use of this technical solution cannot effectively compress the feeding block on the rubber, and the rubber will cause the problem of sliding off of the counterweight rubber sheet for feeding during the movement of the rubber.

SUMMARY OF THE INVENTION

The invention provides an automatic feeding device for a natural rubber baler, which aims to solve the problem of low efficiency of manual feeding when the above-mentioned bulk rubber needs feeding after weighing.

In order to achieve the above purpose, the present invention provides an automatic feeding device for a natural rubber baler, including a bracket, a telescopic frame, a movable frame, a roller, a pushing assembly and a feeding assembly, and the telescopic frame is connected to the On the bracket, the movable frame is connected to the telescopic frame through the second telescopic component; the roller is rotatably arranged on the movable frame, and a plurality of troughs for placing rubber sheets are uniformly distributed on the drum along the circumferential direction. ; The pushing assembly is arranged in the drum, and the pushing assembly performs telescopic motion through the rotation of the drum, so that when the material trough rotates to the bottom of the drum, the pushing assembly pushes the rubber The sheet is pushed out of the trough and pressed on the block rubber that needs to be replenished; the feeding assembly is arranged on the movable frame, and the feeding assembly is connected with the drum to drive the feeding assembly. Push the rubber sheet into the trough.

Further, the pushing assembly includes a polygonal track groove, a limit roller and a push rod, and the polygonal track groove is arranged on both sides of the drum and is fixedly connected with the drum; the movable frame is provided with a fixed shaft, The polygonal track groove is sleeved on the fixed shaft through a bearing; the push rod is slidably arranged on the fixed shaft along the vertical direction; the limit roller is rotatably connected to both ends of the push rod , the limit roller is located in the polygon track groove; the push rod is provided with a pressure rod.

Further, the feeding assembly includes a spiral push roller, a transmission bevel gear and a material box for placing multiple pieces of the rubber sheets, and the spiral push roller is rotatably arranged on both sides of the movable frame; the drive The bevel gear is arranged at the end of the spiral push roller, the two ends of the roller are provided with annular bevel gears, and the transmission bevel gear meshes with the annular bevel gear for transmission; the material box is arranged on the movable frame .

Further, the number of the spiral push rollers is two; the spiral groove on the spiral push roller at one end of the drum is opposite to the spiral groove on the spiral push roller at the other end of the drum, so as to When the roller is rotated to drive the spiral push rollers on both sides to rotate synchronously and reversely, the rubber sheet is pushed into the material chute for vertical unloading.

Further, the first telescopic member and the second telescopic member are electric push rods or pneumatic push rods.

Further, two sides of the telescopic frame are provided with rectangular limit holes, and two sides of the movable frame are provided with movable rollers, and the movable rollers are located in the rectangular limit holes.

Further, each arc-shaped bottom edge of the polygonal track groove is correspondingly arranged with the material trough along the circumferential direction of the drum, so that the roller is always in the vertical direction in the process of driving the polygonal track groove to rotate. The pressing rod pushes the rubber sheet away from the material trough; the vertical section of the material trough is a trapezoidal structure.

Further, the fixing shaft is provided with a limit rod along the vertical direction, and the push rod is sleeved on the limit rod, so that the limit rod can slide in the vertical direction.

Further, it also includes a tying pin, the tying pin is located in the middle of the rubber sheet, and the flat end of the tying pin protrudes from the surface of the rubber sheet; There is a round hole through which the pressing rod pushes the rubber sheet out of the trough, and pushes the binding pin to fasten the rubber sheet on the block rubber.

Further, it also includes a control module, the first telescopic part and the second telescopic part are electrically connected to the control module respectively, so that the control module controls the vertical telescopic movement and control of the first telescopic part The second telescopic component performs horizontal telescopic movement.

Compared with the prior art, it has the following beneficial effects:

1. By setting the first telescopic part and the second telescopic part, to push the roller to press down and roll, the weighted rubber sheet of a certain weight is pushed out of the trough and pressed against the block rubber, so as to realize the block rubber that does not meet the weight. Feeding materials to meet the weight requirements, effectively improve the efficiency of rubber feeding, reduce manual labor, and improve the efficiency of rubber packaging finished products.

2. By arranging a push assembly in the drum, while the drum rotates under the push of the second telescopic part, the push rod in the push assembly moves in a vertical direction under the rotation of the polygonal track groove, so that the Rotate the rubber sheet at the vertical bottom of the drum to push out the trough to realize rolling feeding, and rely on the rolling distance to convert the rubber sheet required for the counterweight, which effectively improves the accuracy of feeding.

3. By setting the feeding component on the movable frame, the roller can be fed during the rotation process, so that the rubber sheet used for the counterweight is pressed into the feeding trough for feeding, so that the rubber sheet can be unloaded and the block rubber can be loaded. At the same time of feeding, the feeding of the trough is also carried out, so that the drum always maintains the counterweight rubber sheet in the trough during the rotation process, which effectively improves the feeding speed and solves the problem of manual feeding. The degree of automation is high, which further improves the The feeding efficiency of block rubber packing is improved.

4. Tie the weighted rubber sheet to the block rubber by setting tie pins on the counterweight rubber sheet and combined with the push component, so as to prevent the block rubber from falling off during the conveying process and causing the packing weight not to meet the standard The problem appears, effectively improving the accuracy of the packaging weight.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only preferred embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative labor.

Fig. 1 is the schematic diagram of a kind of natural rubber baler automatic feeding device of the application;

2 is a schematic diagram of a telescopic frame of a natural rubber baler automatic feeding device of the application;

Fig. 3 is the drum schematic diagram of a kind of natural rubber baler automatic feeding device of the application;

Fig. 4 is the schematic schematic diagram of the enlarged partial A of a kind of natural rubber baler automatic feeding device of the application;

Fig. 5 is the internal schematic diagram of the drum of a kind of natural rubber baler automatic feeding device of the application;

Fig. 6 is the partial B enlarged schematic diagram of a kind of natural rubber baler automatic feeding device of the application;

FIG. 7 is a schematic diagram of a pushing component of an automatic feeding device for a natural rubber baler according to the application;

8 is a schematic diagram of a feeding assembly of an automatic feeding device for a natural rubber baler according to the application;

9 is an enlarged schematic diagram of part C of a natural rubber baler automatic feeding device of the application;

Fig. 10 is the drum shaft view of a kind of natural rubber baler automatic feeding device of the application;

11 is a schematic diagram of a drum of an automatic feeding device for a natural rubber baler according to the present application.

Reference signs: 1-bracket; 2-extension frame; 3-movable frame; 4-roller; 5-first telescopic part; 6-second telescopic part; 7-rubber sheet; 8-fixed shaft; 9-ring cone Gear; 10-tie pin; 21-rectangular limit hole; 31-movable roller; 41-material trough; 42-round hole; 51-polygon track groove; 52-limit roller; 53-push rod; 54-press rod ;61-spiral push roller;62-transmission bevel gear;63-material box;81-limiting rod;511-arc bottom edge;611-spiral groove.

Detailed ways

In order to make it easier to understand the structure of the present utility model and the functional features and advantages that can be achieved, the preferred embodiments of the present utility model will be described in detail below in conjunction with the drawings:

Example 1:

As shown in Figures 1 to 6, the present invention provides an automatic feeding device for a natural rubber baler, including a bracket 1, a telescopic frame 2, a movable frame 3, a roller 4, a pushing assembly and a feeding assembly, and the telescopic frame 2 The first telescopic part 5 is connected to the bracket 1 to control the vertical lifting movement of the telescopic frame 2 through the first telescopic part 5; the movable frame 3 is connected to the telescopic frame 2 through the second telescopic part 6 to pass the second The telescopic member 6 is used to control the horizontal telescopic movement of the movable frame 3; the drum 4 is rotatably arranged on the movable frame 3, and the drum 4 is evenly distributed with a plurality of troughs 41 for placing the rubber sheets 7 for counterweight in the circumferential direction, so as to pass the second telescopic member 6 to make the drum 4 rotate and advance on the block rubber; the pushing component is arranged in the drum 4, and the pushing component performs telescopic motion through the rotation of the drum 4, so that when the trough 41 rotates to the bottom of the drum 4, the pushing The assembly pushes the counterweight rubber sheet 7 out of the trough 41 and presses it on the block rubber that needs to be replenished to realize the function of replenishing; The feeding component pushes the rubber sheet 7 into the feeding slot 41 to realize the feeding of the sheet-weight rubber sheet 7 .

By setting the first telescopic part 5 and the second telescopic part 6, the roller 4 is pushed down and rolled, and the weighted rubber sheet 7 is pushed out of the trough 41 and pressed against the block rubber, so as to realize the control of the block that does not meet the weight. It can effectively improve the efficiency of rubber feeding, reduce manual labor, and improve the efficiency of rubber packaging.

Specifically, the first telescopic part 5 and the second telescopic part 6 are electric push rods 53 or pneumatic push rods 53 , so that the telescopic frame 2 and the movable frame 3 are pushed to move by the electric push rod 53 or the pneumatic push rod 53 .

Specifically, rectangular limit holes 21 are provided on both sides of the telescopic frame 2 , and movable rollers 31 are provided on both sides of the movable frame 3 . 31 is limited, so that the movable frame 3 is pushed by the second telescopic member 6, and the movable roller 31 rolls in the rectangular limit hole 21, so that the movable frame 3 can stably perform linear motion and is supported by the movable roller 31. .

Example 2:

As shown in FIG. 3 to FIG. 11 , in combination with the technical solution of Embodiment 1, in this embodiment, the pressing component includes a polygonal track groove 51 , a limit roller 52 and a push rod 53 , and the polygonal track groove 51 is provided on both sides of the drum 4 . And it is fixedly connected with the roller 4; the movable frame 3 is provided with a fixed shaft 8, the polygonal track groove 51 is sleeved on the fixed shaft 8 through a bearing, and the fixed shaft 8 is fixed and fixed, so that the roller 4 is in the second telescopic part 6. Under the push, it rotates around the fixed shaft 8 through the polygonal track groove 51; the push rod 53 is slidably arranged on the fixed shaft 8 in the vertical direction; the limit roller 52 is rotatably connected to both ends of the push rod 53, and the limit roller 52 It is located in the polygonal track groove 51; the push rod 53 is provided with a pressure rod 54 to push the weighted rubber sheet 7 out of the material groove 41 through the pressure rod 54 to realize the function of replenishment.

By arranging a push assembly in the drum 4 , while the drum 4 rotates under the push of the second telescopic member 6 , the push rod 53 in the push assembly moves in a vertical direction under the rotation of the polygonal track groove 51 . , to push the rubber sheet 7 rotated to the vertical bottom of the drum 4 out of the trough 41 to realize rolling feeding, and rely on the rolling distance to convert the rubber sheet 7 required for the counterweight, effectively improving the accuracy of feeding.

Specifically, the feeding assembly includes a screw push roller 61, a transmission bevel gear 62 and a material box 63 for placing multiple pieces of rubber sheets 7. The screw push roller 61 is rotatably arranged on both sides of the movable frame 3; the transmission bevel gear 62 is provided with At the end of the spiral push roller 61, the two ends of the drum 4 are provided with annular bevel gears 9, and the transmission bevel gear 62 meshes with the annular bevel gear 9 for transmission, so as to drive the spiral push rollers 61 on both sides of the drum 4 through the rotation of the drum 4 to carry out. Synchronous and reverse rotation to synchronously push the rubber sheet 7 for vertical downward movement; the material box 63 is arranged on the movable frame 3, and the rubber sheet 7 is located in the material box 63 at a certain interval; further, the movable frame 3 is provided with a through groove , so that the rubber sheet 7 in the material box 63 can enter the material tank 41 through the through groove.

By arranging a feeding assembly on the movable frame 3, the drum 4 can be fed during the rotation, so as to press the rubber sheet 7 used for the counterweight into the feeding chute 41 for feeding, so that the rubber sheet 7 can be unloaded and aligned with the block. At the same time as the rubber is replenished, it also feeds the trough 41, so that the drum 4 always keeps the counterweight rubber sheet 7 in the trough 41 during the rotation process, which effectively improves the feeding speed and solves the problem of manual feeding. The high degree of automation further improves the feeding efficiency of block rubber packing.

Specifically, there are two helical push rollers 61; the spiral groove 611 on the spiral push roller 61 at one end of the drum 4 is opposite to the spiral groove 611 on the spiral push roller 61 at the other end of the drum 4, so that the drum 4 When the rotation drives the spiral push rollers 61 on both sides to rotate synchronously and reversely, the rubber sheet 7 is pushed into the material chute 41 for vertical unloading, so as to realize the feeding of the rubber sheet 7; The ends are provided with protrusions, so as to cooperate with the spiral grooves 611 on the spiral push roller 61, so that the spiral grooves 611 can drive the rubber sheet 7 to move vertically through the protrusions during the rotation.

Specifically, each arc-shaped bottom edge 511 of the polygonal track groove 51 and the material trough 41 are arranged correspondingly along the circumferential direction of the drum 4 , so that in the process of driving the polygonal track groove 51 to rotate by the drum 4 , the pressing rod 54 is always in the vertical direction. Push the rubber sheet 7 out of the trough 41 to push the rubber sheet 7 out of the trough 41 when the trough 41 is in contact with the block rubber; the vertical section of the trough 41 is a trapezoid structure, and the lower bottom edge of the trapezoid structure is located outside the rollers round, so that the rubber sheet 7 can be clamped in the material trough 41, and it is convenient to carry out material loading and unloading during the rotation of the drum 4.

Specifically, the fixed shaft 8 is provided with a limit rod 81 along the vertical direction, and the push rod 53 is sleeved on the limit rod 81, so that the limit rod 81 can slide in the vertical direction, so as to facilitate the limit roller 52 in the polygonal track. In the process of the groove 51 following the rotation of the drum 4, under the action of the polygonal track groove 51, the pressing rod 54 is pushed to move in the vertical direction, so as to push the weighted rubber sheet 7 out of the trough 41 and into the block rubber. Refill.

Example 3:

As shown in FIG. 8 , in combination with the technical solution of Embodiment 2, in this embodiment, a tie 10 is further included, and the tie 10 is located in the through hole in the middle of the rubber sheet 7 ; the flat end of the tie 10 protrudes from the surface of the rubber sheet 7 , So that the rubber sheet 7 is located in the material box 63 through the tie pins 10 at intervals; a circular hole 42 is provided in the material trough 41 in the vertical direction opposite to the pressing rod 54, and the pressing rod 54 pushes the rubber sheet 7 out of the feeding trough through the round hole 42 41, and push the tie pin 10 to fasten the rubber sheet 7 on the block rubber, so as to prevent the block rubber from falling under the conveying belt, thus causing the problem that the weight of the block rubber does not meet the standard when packing, effectively improving the The packing accuracy of the block rubber improves the quality of the block rubber packing product.

By arranging the tying nails 10 on the weighted rubber sheet 7, and combined with the push assembly, the weighted rubber sheet 7 is fastened to the block rubber, so as to avoid the packing weight caused by the falling of the rubber sheet 7 during the conveying process of the block rubber. The problem of non-compliance with the standard appears, which effectively improves the accuracy of the packaging weight.

Specifically, it also includes a control module. The first telescopic part 5 and the second telescopic part 6 are electrically connected to the control module respectively, so that the control module controls the vertical telescopic movement of the first telescopic part 5 and the horizontal telescopic movement of the second telescopic part 6. Telescopic movement; the control module compares the weight information of the block rubber from the weighing process with the standard weight, and converts it into the linear distance of the rotation of the drum 4, so that the distance of the drum 4 is equivalent to the corresponding rubber sheet 7 feeding quantity , so as to realize the replenishment of one or more pieces of rubber sheet 7 .

Example 4:

As shown in FIG. 8, combined with the technical solution of Embodiment 3, in this embodiment, a push switch (not shown) is also included. The push switch is arranged in the material box 63 and located on the inner wall of the bottom of the material box 63. The push switch is electrically A buzzer is connected; when the rubber sheet 7 in the material box 63 is used up, the rubber sheet 7 is separated from the push switch, and the push switch is reset to turn on the buzzer to realize the alarm, reminding the staff that the material box 63 needs to add weight rubber Sheet 7.

The above are only preferred embodiments of the present invention, and do not limit the present invention in any form. Any person skilled in the art, without departing from the scope of the technical solution of the present invention, can make many possible changes and modifications to the technical solution of the present invention by using the above-mentioned technical content, or modify the equivalent embodiments of equivalent changes. Therefore, any modifications, equivalent changes and modifications made to the above embodiments according to the technology of the present invention without departing from the content of the technical solution of the present invention all belong to the protection scope of the technical solution of the present invention.

Claims

An automatic feeding device for a natural rubber baler, characterized in that it comprises a bracket (1), a telescopic frame (2), a movable frame (3), a roller (4), a pushing assembly and a feeding assembly, the telescopic frame (2) is connected to the bracket (1) through a first telescopic member (5), and the movable frame (3) is connected to the telescopic frame (2) through a second telescopic member (6); the roller (4) It is rotatably arranged on the movable frame (3), and a plurality of troughs (41) for placing the rubber sheets (7) are evenly distributed on the drum (4) along the circumferential direction; the pushing component is arranged on the In the drum (4), the pushing assembly performs telescopic motion through the rotation of the drum (4), so that when the material trough (41) rotates to the bottom of the drum (4), the pushing assembly will The rubber sheet (7) is pushed out of the trough (41) and pressed onto the block rubber that needs to be replenished; the feeding assembly is arranged on the movable frame (3), and the feeding assembly is connected to the The drum (4) is connected in a driving manner, so that the feeding assembly pushes the rubber sheet (7) into the material trough (41).
The automatic feeding device for a natural rubber baler according to claim 1, wherein the pushing component comprises a polygonal track groove (51), a limit roller (52) and a push rod (53), and the polygonal track The grooves (51) are arranged on both sides of the drum (4) and are fixedly connected with the drum (4); the movable frame (3) is provided with a fixed shaft (8), and the polygonal track grooves (51) pass through The bearing is sleeved on the fixed shaft (8); the push rod (53) is slidably arranged on the fixed shaft (8) along the vertical direction; the limit roller (52) is rotatably connected to the fixed shaft (8) Both ends of the push rod (53), the limiting rollers (52) are located in the polygonal track groove (51); the push rod (53) is provided with a pressing rod (54).
The automatic feeding device for a natural rubber baler according to claim 2, characterized in that, the feeding assembly comprises a screw pushing roller (61), a transmission bevel gear (62) and a device for placing a plurality of the rubber sheets (61). 7) of the material box (63), the spiral push rollers (61) are rotatably arranged on both sides of the movable frame (3); the drive bevel gears (62) are arranged on the spiral push rollers (61) The ends of the drum (4) are provided with annular bevel gears (9), and the transmission bevel gears (62) mesh with the annular bevel gears (9) for transmission; the material box (63) is provided with on the movable frame (3).
The automatic feeding device for a natural rubber baler according to claim 3, characterized in that, there are two spiral push rollers (61); the spiral push roller (61) located at one end of the drum (4) is located on the spiral push roller (61). The spiral groove (611) on the other end of the drum (4) is opposite to the spiral groove (611) on the spiral push roller (61) at the other end of the drum (4), so that the drum (4) rotates to drive the When the spiral push roller (61) rotates synchronously and reversely, the rubber sheet (7) is pushed into the material chute (41) for vertical feeding.
The automatic feeding device for a natural rubber baler according to claim 1, wherein the first telescopic part (5) and the second telescopic part (6) are electric push rods (53) or pneumatic push rods (53).
The automatic feeding device for a natural rubber baler according to claim 1, characterized in that, rectangular limit holes (21) are provided on both sides of the telescopic frame (2), and two sides of the movable frame (3) are provided with rectangular limit holes (21). There is a movable roller (31), and the movable roller (31) is located in the rectangular limit hole (21).
The automatic feeding device for a natural rubber baler according to claim 3, characterized in that, each arc bottom edge (511) of the polygonal track groove (51) and the feeding groove (41) are along the drum (4) Correspondingly arranged in the circumferential direction, so that when the roller (4) drives the polygonal track groove (51) to rotate, the pressing rod (54) always pushes the rubber sheet (7) in the vertical direction ) is separated from the material trough (41); the vertical section of the material trough (41) is a trapezoidal structure.
The automatic feeding device for a natural rubber baler according to claim 2, wherein the fixed shaft (8) is provided with a limit rod (81) along the vertical direction, and the push rod (53) is sleeved on the the limit rod (81), so that the limit rod (81) can slide in the vertical direction.
The automatic feeding device for a natural rubber baler according to claim 2, characterized in that it further comprises a tying pin (10), the tying pin (10) is located in the middle of the rubber sheet (7), and the tying pin (10) is located in the middle of the rubber sheet (7). The flat end of 10) protrudes from the surface of the rubber sheet (7); a circular hole (42) is provided in the material trough (41) in the vertical direction opposite to the pressing rod (54), and the pressing rod ( 54) Push the rubber sheet (7) out of the trough (41) through the circular hole (42), and push the binding pin (10) to fasten the rubber sheet (7) on the block rubber.
The automatic feeding device for a natural rubber baler according to any one of claims 1 to 9, characterized in that it further comprises a control module, wherein the first telescopic part (5) and the second telescopic part (6) are respectively It is electrically connected with the control module, so that the control module controls the vertical telescopic movement of the first telescopic member (5) and the horizontal telescopic movement of the second telescopic member (6).