Edge banding machine

Abstract

The utility model relates to the technical field of edge bonding machines, in particular to an edge bonding machine which comprises a first base and a second base, a mounting vertical plate, paper feeding mechanisms, a rolling mechanism, an auxiliary paper feeding mechanism and a gluing mechanism are arranged on the first base, the rolling mechanism is arranged between the two paper feeding mechanisms, and the gluing mechanism is arranged at one end of the first base. The auxiliary paper feeding mechanism is arranged between the gluing mechanism and the paper feeding mechanism, a conveying mechanism, a bonding mechanism and a control cabinet are arranged on the second base, and a hot air drying channel is arranged on the second base and located above the conveying mechanism. The edge banding machine can realize edge banding operation of round plates, is firm and attractive in paper tape bonding, can meet the edge banding requirements of plates with different specifications and sizes, and is wide in application range, good in equipment compatibility, high in automation level, stable and reliable in overall structure, high in installation precision and convenient to operate, and the labor cost is saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to edge banding machine technical field especially relates to an edge banding machine. BACKGROUND

[0002] In woodworking production industry, edge banding operation is an important process in panel furniture manufacturing process, through edge banding, the section of board is fixed and sealed, to avoid the damage of moisture to the board, also can prevent the formaldehyde volatilization in the board, at the same time, reach the effect of decorative and beautiful, edge banding machine is mainly used for the board edge banding of panel furniture, the traditional manual operation process is completed by highly automated machinery.

[0003] Chinese utility model patent CN219968294U discloses ribbon bonding machine, including frame base, on the frame base, according to work flow, sequentially installed have: material installation component, paper tape leveling component, feeding assembly, cutting assembly, gluing assembly, air suction step conveying assembly, positioning rotary attaching assembly and control cabinet, although it can meet the edge banding demand of multiple boards, increase the degree of automation of equipment, improve production efficiency, but there are still the following problems in actual use:

[0004] 1. Material installation component, paper tape leveling component and feeding assembly are independently installed, the relative position adjustment is tedious, and the paper tape conveying precision is low;

[0005] 2. The edge banding form is single, and the individualized demand of customers cannot be met;

[0006] 3. After the paper tape is bonded on the workpiece by glue, it needs to wait for the glue to dry naturally, the waiting period is long, and the production efficiency is influenced.

[0007] Therefore, it is necessary to provide an improved edge banding machine to overcome the defects of the prior art. UTILITY MODEL CONTENT

[0008] The utility model aims at solving the problems in the prior art, and provides an edge banding machine.

[0009] The technical scheme of the utility model is:

[0010] The edge banding machine comprises a first base and a second base connected with each other, the first base is provided with a mounting stand, a paper feeding mechanism, a rolling mechanism, an auxiliary paper feeding mechanism and a glue applying mechanism, the mounting stand is provided with a mounting shaft, the two paper feeding mechanisms are connected to the mounting stand, the rolling mechanism is arranged between the two paper feeding mechanisms, the glue applying mechanism is arranged at one end of the first base, the auxiliary paper feeding mechanism is arranged between the glue applying mechanism and one of the paper feeding mechanisms, the second base is provided with a conveying mechanism, a bonding mechanism and a control cabinet, the bonding mechanism is arranged at the end of the second base away from the first base, the conveying mechanism extends along the length direction of the second base, the hot air drying channel is arranged above the conveying mechanism on the second base, and the control cabinet is arranged at one side of the second base, and the paper feeding mechanism, the rolling mechanism, the auxiliary paper feeding mechanism, the glue applying mechanism, the conveying mechanism, the bonding mechanism and the hot air drying channel are electrically connected with the control cabinet.

[0011] Preferably, the mounting shaft is provided with a tension controller at one end, the tension controller is electrically connected with a torque controller arranged on the first base, and a plurality of tensioning shafts are arranged on the mounting stand and located at one side of the mounting shaft and rotatably connected with the mounting stand.

[0012] Preferably, the paper feeding mechanism comprises a side plate, a driving roller and a driven roller, the side plate is arranged in parallel with the mounting stand, the driving roller and the driven roller are arranged side by side between the mounting stand and the side plate, the driving roller is in transmission connection with the driven roller, and the driving rollers of the two paper feeding mechanisms are in transmission connection with a first driving motor arranged on the first base.

[0013] Preferably, the rolling mechanism comprises a rolling support, a supporting roller, a rolling cutter and a second driving motor, the rolling support is arranged on the first base, the supporting roller and the rolling cutter are arranged side by side on the rolling support, the rolling cutter is arranged above the supporting roller and in transmission connection with the supporting roller, and the second driving motor is arranged on the mounting stand and in transmission connection with the supporting roller.

[0014] Preferably, the auxiliary paper feeding mechanism comprises an auxiliary paper feeding roller, a third driving motor, a limiting pressing plate and an auxiliary roller, the third driving motor is arranged on the mounting stand and in transmission connection with the auxiliary paper feeding roller, the limiting pressing plate is arranged above the auxiliary paper feeding roller, a plurality of evenly distributed through holes are arranged on the limiting pressing plate along the length direction, a steel ball is arranged in each through hole, a blocking strip is arranged on the limiting pressing plate, and the auxiliary roller is arranged above the feeding end of the auxiliary paper feeding roller and in transmission connection with the auxiliary paper feeding roller.

[0015] Preferably, the end of the auxiliary paper feeding mechanism close to the paper feeding mechanism is provided with a cutting mechanism, the cutting mechanism comprises a cutting cylinder, a cutting support, a fixed cutter and a movable cutter, the cutting cylinder is arranged on the first base, the cutting support is arranged on the top surface of the fixed end of the cutting cylinder, the fixed cutter is fixedly arranged on the cutting support, the movable cutter is hingedly arranged with the fixed cutter, and one end of the movable cutter is hingedly connected with the extending end of the cutting cylinder.

[0016] Preferably, the glue applying mechanism comprises glue applying vertical plates, a fourth driving motor, a first glue roller, a second glue roller, a third glue roller and a glue supply pipe, the two glue applying vertical plates are symmetrically arranged on the first base, the first glue roller is rotatably arranged between the two glue applying vertical plates, the fourth driving motor is arranged outside one of the glue applying vertical plates, the first glue roller is in transmission connection with the fourth driving motor, the second glue roller is arranged obliquely above the first glue roller, the third glue roller is adjustably arranged obliquely below the first glue roller through glue roller connecting blocks on the two sides, the second glue roller and the third glue roller are in transmission connection with the first glue roller, the glue supply pipe is adjustably arranged above the first glue roller and the second glue roller, the glue supply pipe is in communication with a glue supply pump, the glue applying vertical plate is provided with an anti-sticking connecting rod on the top, an anti-sticking connecting rod is fixedly arranged on the anti-sticking connecting rod, an anti-sticking scraping blade is arranged on the end of the anti-sticking connecting rod away from the anti-sticking connecting rod, the anti-sticking scraping blade abuts against the first glue roller, a handle is fixedly arranged on the anti-sticking connecting rod, a glue receiving disc is arranged below the second glue roller, a glue receiving box is arranged on the inner wall of the glue applying vertical plate, and a glue receiving funnel is arranged on the first base between the two glue applying vertical plates, the glue receiving funnel is in communication with a glue supply barrel arranged on one side of the first base.

[0017] Preferably, the conveying mechanism comprises a power frame, a conveying belt and a centrifugal fan, the power frame is arranged on the second base, the conveying belt is arranged around the power frame, the power frame is arranged in a hollow structure, the upper surface of the power frame is provided with ventilation holes, the conveying belt is provided with air holes, and the centrifugal fan is arranged on the second base and in communication with the inside of the power frame through an air suction pipe.

[0018] Preferably, the bonding mechanism comprises a mounting base plate, a first stand, a second stand, a mounting frame, a combined lifting unit, a positioning assembly, an edge pressing assembly, an arranging assembly, a rotating assembly, a pressing assembly and an upward pushing assembly, the mounting base plate is arranged on the second base through a first linear guide rail, the first stand and the second stand are arranged on the two sides of the mounting base plate, the combined lifting unit is arranged on the first stand, the second stand is provided with a second linear guide rail, the mounting frame is arranged between the combined lifting unit and the second linear guide rail, and the positioning assembly, the edge pressing assembly, the arranging assembly, the rotating assembly, the pressing assembly and the upward pushing assembly are all arranged on the mounting frame, the edge pressing assembly comprises an edge pressing cylinder, a cylinder support, a clamping jaw cylinder and an edge pressing guide rod, the cylinder support is arranged on the extending end of the edge pressing cylinder, the clamping jaw cylinder is arranged on the cylinder support, rotatable edge pressing wheels are arranged on the two clamping jaws of the clamping jaw cylinder, one end of the edge pressing guide rod is connected to the cylinder support, the other end of the edge pressing guide rod is provided with an edge pressing limiting plate, and dampers are arranged on the edge pressing limiting plate.

[0019] Preferably, the combined lifting unit comprises a manual lifting assembly and a pneumatic lifting assembly, the manual lifting assembly comprises a manual lead screw, a third linear guide rail and a first lifting plate, the manual lead screw and the third linear guide rail are both arranged on the first vertical column, the first lifting plate is arranged on the third linear guide rail and is in threaded connection with the manual lead screw, the pneumatic lifting assembly comprises a lifting cylinder, a fourth linear guide rail and a second lifting plate, the lifting cylinder and the fourth linear guide rail are both arranged on the first lifting plate, the second lifting plate is arranged on the fourth linear guide rail, the extending end of the lifting cylinder is connected with the second lifting plate, the fifth linear guide rail is arranged on the second lifting plate, one side of the mounting frame is connected with the fifth linear guide rail, the tension spring is arranged between the second lifting plate and the mounting frame, the rotating assembly comprises a fifth driving motor, a rotating seat and a first pressing plate, the fifth driving motor and the rotating seat are both arranged on the mounting frame, the first pressing plate is rotatably arranged on the rotating seat, the first pressing plate is in transmission connection with the fifth driving motor, the pressing assembly comprises a pressing cylinder, a pressing seat and a second pressing plate, the pressing cylinder is arranged on the mounting frame, the pressing seat is connected with the extending end of the pressing cylinder, the second pressing plate is rotatably arranged on the pressing seat, the positioning assembly comprises a positioning cylinder and a positioning disc, the positioning cylinder is arranged on one side of the mounting frame, the positioning disc is arranged on the extending end of the positioning cylinder, a plurality of positioning shafts are arranged on the positioning disc in a circumferential direction, the arranging assembly comprises an arranging cylinder, an arranging connecting block and an arranging guide rod, the arranging cylinder is arranged on the mounting frame, the arranging connecting block is connected with the extending end of the arranging cylinder, the arranging guide rod is connected with the arranging connecting block through the mounting frame, two rotatable arranging blocks are oppositely and staggeredly arranged on the arranging connecting block, an arranging limiting plate is arranged on the arranging guide rod, and a damper is arranged on the arranging limiting plate.

[0020] Compared with the prior art, the utility model has the advantages of:

[0021] 1. The installation vertical plate and the paper feeding mechanism connected with the installation vertical plate are arranged, the positioning precision is high, and the stability of paper tape feeding is good.

[0022] 2. The hob and the supporting roller are arranged, the two sides of the paper tape can be cut in different shapes, the diversity use needs are met, and the appearance of the edge sealing is improved.

[0023] 3. The steel ball arranged on the limiting pressing plate keeps the pressure on the paper tape, and the paper tape conveying is more stable.

[0024] 4. The paper tape is evenly and stably glued by the set glueing mechanism, the applicable paper tape thickness is wider, the glue receiving disc, glue receiving box and glue receiving funnel avoid waste of excess glue, and the equipment and environment are kept clean;

[0025] 5. The glue on the paper tape is heated and dried by the hot air drying channel arranged above the conveying mechanism, the glue drying speed is improved, and the production efficiency is improved;

[0026] 6. The paper tape is adsorbed on the conveying belt through negative pressure, and the paper tape conveying is stable and does not deviate;

[0027] 7. The two sides of the bonded paper tape are rolled and pressed by the set edge pressing mechanism, and the paper tape bonding effect is improved. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a three-dimensional structure diagram of the utility model Figure 1 ;

[0029] Figure 2 It is a three-dimensional structure diagram of the utility model Figure 2 ;

[0030] Figure 3 It is a three-dimensional structure diagram of the utility model Figure 1 ;

[0031] Figure 4 It is a three-dimensional structure diagram of the utility model Figure 2 ;

[0032] Figure 5 It is a three-dimensional structure diagram of the utility model ;

[0033] Figure 6 It is a three-dimensional structure diagram of the utility model ;

[0034] Figure 7 It is a three-dimensional structure diagram of the utility model Figure 1 ;

[0035] Figure 8 It is a three-dimensional structure diagram of the utility model Figure 2 ;

[0036] Figure 9 It is a three-dimensional structure diagram of the utility model Figure 1 ;

[0037] Figure 10 It is a three-dimensional structure diagram of the utility model Figure 2 ;

[0038] Figure 11 It is a three-dimensional structure diagram of the utility model

[0039] Wherein, 1, first base; 2, second base; 3, installation stand; 4, installation shaft; 5, tension controller; 6, torque controller; 7, tensioning shaft; 8, control cabinet; 9, hot air drying channel; 10, side plate; 11, driving roller; 12, driven roller; 13, first driving motor; 14, rolling support; 15, supporting roller; 16, hob; 17, second driving motor; 18, auxiliary paper feeding roller way; 19, third driving motor; 20, limiting pressing plate; 21, auxiliary roller; 22, through hole; 23, steel ball; 24, baffle; 25, cutting cylinder; 26, cutting support; 27, fixed cutter; 28, movable cutter; 29, gluing stand; 30, fourth driving motor; 31, first rubber roller; 32, second rubber roller; 33, third rubber roller; 34, glue supply pipe; 35, rubber roller connecting block; 36, glue supply pump; 37, anti-adhesion rod; 38, anti-adhesion connecting rod; 39, anti-adhesion scraping piece; 40, handle; 41, glue receiving disc; 42, glue receiving box; 43, glue receiving funnel; 44, glue supply barrel; 45, power frame; 46, conveying belt; 47, centrifugal fan; 48, ventilation hole; 49, air hole; 50, air extraction pipe; 51, installation base plate; 52, first stand column; 53, second stand column; 54, installation frame; 55, first linear guide rail; 56, second linear guide rail; 57, edge pressing cylinder; 58, cylinder support; 59, clamping jaw cylinder; 60, edge pressing guide rod; 61, edge pressing wheel; 62, edge pressing limiting plate; 63, damper; 64, manual screw; 65, third linear guide rail; 66, first lifting plate; 67, lifting cylinder; 68, fourth linear guide rail; 69, second lifting plate; 70, fifth linear guide rail; 71, tension spring; 72, fifth driving motor; 73, rotating seat; 74, first pressing plate; 75, pressing cylinder; 76, pressing seat; 77, second pressing plate; 78, positioning cylinder; 79, positioning disc; 80, positioning shaft; 81, arranging cylinder; 82, arranging connecting block; 83, arranging guide rod; 84, arranging block; 85, arranging limiting plate; 86, upper jacking cylinder; 87, upper jacking connecting block; 88, upper jacking guide rod; 89, upper jacking block; 90, upper jacking limiting plate. DETAILED DESCRIPTION

[0040] In order to make the technical means, technical features, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific drawings.

[0041] As Figure 1 And Figure 2As shown, an edge banding machine comprises a first base 1, a second base 2, a paper feeding mechanism, a rolling mechanism, an auxiliary paper feeding mechanism, a cutting mechanism, a glue passing mechanism, a conveying mechanism, a bonding mechanism and a control cabinet 8, the first base 1 and the second base 2 are independent of each other and can be connected into a whole, reducing the difficulty of processing and transportation, the paper feeding mechanism, the rolling mechanism, the auxiliary paper feeding mechanism, the cutting mechanism and the glue passing mechanism are sequentially installed on the first base 1 according to the technological process, the conveying mechanism and the bonding mechanism are sequentially installed on the second base 2 according to the technological process, a hot air drying channel 9 is installed on the second base 2 and above the conveying mechanism, used for accelerating the drying speed of the glue on the paper tape and improving the work efficiency, the control cabinet 8 is installed on one side of the second base 2, and the paper feeding mechanism, the rolling mechanism, the auxiliary paper feeding mechanism, the cutting mechanism, the glue passing mechanism, the conveying mechanism, the bonding mechanism and the hot air drying channel 9 are electrically connected with the control cabinet 8 and are uniformly controlled by the control cabinet 8.

[0042] As shown in Figure 1 and Figure 2 , an installation vertical plate 3 is connected on the first base 1, an installation shaft 4 is connected on the installation vertical plate 3 through a bearing, so that the installation shaft 4 can rotate relative to the installation vertical plate 3, the installation shaft 4 is used for installing a paper tape roll, a tension controller 5 is also installed on the installation vertical plate 3, the installation shaft 4 is connected with the tension controller 5, the installation shaft 4 and the paper tape roll are driven to rotate by the tension controller 5, so that the paper tape can maintain a certain tension during conveying, the paper tape can be smoothly conveyed and can prevent the paper tape from being broken, a torque controller 6 is installed on the first base 1, the tension controller 5 is electrically connected with the torque controller 6, the torque controller 6 is used for controlling the tension controller 5 and adjusting the working parameters of the tension controller 5, a plurality of tensioning shafts 7 are installed on the installation vertical plate 3 and on one side of the installation shaft 4, the tensioning shafts 7 are installed through bearings, so that the tensioning shafts 7 can rotate relative to the installation vertical plate 3, the paper tape is sequentially wound around the tensioning shafts 7 for tensioning, to ensure the smooth transition of the paper tape.

[0043] As shown in Figure 1 and Figure 2As shown, the number of paper feeding mechanisms is two, both of which are connected with the mounting vertical plate 3, improving the stability and accuracy of paper feeding. The paper feeding mechanism includes a side plate 10, a driving roller 11 and a driven roller 12. The side plate 10 is arranged in parallel with the mounting vertical plate 3 and is connected with the first base 1 through a pull rod. The driving roller 11 and the driven roller 12 are installed side by side between the mounting vertical plate 3 and the side plate 10. The driven roller 12 is located above the driving roller 11 and can be adjusted in position up and down relative to the driving roller 11, so that a slight pre-pressing force is generated between the driving roller 11 and the driven roller 12. The paper tape can be forwarded by the relative rotation of the driving roller 11 and the driven roller 12 and kept in a flat posture. The relative rotation between the driving roller 11 and the driven roller 12 is realized through gear engagement. A first driving motor 13 is installed on the first base 1. The driving rollers 11 of the two paper feeding mechanisms are drivingly connected with the first driving motor 13, synchronously driving the two paper feeding mechanisms to act, keeping the consistency of paper tape conveying and saving cost.

[0044] As shown in Figure 1 , Figure 2 and Figure 5 , the rolling mechanism is located between the two paper feeding mechanisms. The rolling mechanism includes a rolling support 14, a supporting roller 15, a rolling cutter 16 and a second driving motor 17. The rolling support 14 is installed on the first base 1 and has a U-shaped structure. The supporting roller 15 and the rolling cutter 16 are installed side by side on the rolling support 14. The rolling cutter 16 is replaceable and adjustably installed above the supporting roller 15 to keep a certain pressure between the rolling cutter 16 and the supporting roller 15. The paper tape passes between the rolling cutter 16 and the supporting roller 15 and is cut by the rolling cutter 16 on both sides to meet the diversity requirement. The second driving motor 17 is installed on the mounting vertical plate 3 and is drivingly connected with the supporting roller 15 through a shaft coupling. The rolling cutter 16 and the supporting roller 15 are drivingly connected through gear engagement to realize the relative rotation of the rolling cutter 16 and the supporting roller 15.

[0045] As shown in Figure 1 , Figure 2 and Figure 6As shown, the auxiliary paper feeding mechanism includes an auxiliary paper feeding roller 18, a third driving motor 19, a limiting pressing plate 20 and an auxiliary roller 21. The auxiliary paper feeding roller 18 is installed on the first base 1, one end of the auxiliary paper feeding roller 18 is connected with the adjacent paper feeding mechanism, and the other end extends to the laminating mechanism. The third driving motor 19 is installed on the installation vertical plate 3, and is in driving connection with the auxiliary paper feeding roller 18 to drive the auxiliary paper feeding roller 18 to rotate. The limiting pressing plate 20 is installed above the auxiliary paper feeding roller 18 and extends along the length direction of the auxiliary paper feeding roller 18. A plurality of uniformly distributed through holes 22 are formed in the length direction of the limiting pressing plate 20, and a steel ball 23 is installed in each through hole 22. The steel ball 23 is in clearance fit with the through hole 22, and abuts on the upper surface of the auxiliary paper feeding roller 18 by gravity to keep the paper tape on the auxiliary paper feeding roller 18 to be pressed and kept in a taut state. A blocking strip 24 is installed on the upper surface of the limiting pressing plate 20 to limit the steel ball 23 and prevent the steel ball 23 from falling out of the through hole 22. The auxiliary roller 21 is installed above the feeding end of the auxiliary paper feeding roller 18 and keeps a certain pressing force with the auxiliary paper feeding roller 18. The auxiliary roller 21 is in gear engagement with the auxiliary paper feeding roller 18 to clamp the paper tape and realize the forward conveying of the paper tape.

[0046] As shown in Figure 1 and Figure 3 , the cutting mechanism is installed on the first base 1 between the auxiliary paper feeding mechanism and the paper feeding mechanism adjacent to the auxiliary paper feeding mechanism. The cutting mechanism includes a cutting cylinder 25, a cutting support 26, a fixed cutter 27 and a movable cutter 28. The fixed end of the cutting cylinder 25 is connected to the bottom of the first base 1. The cutting support 26 is installed on the top of the fixed end of the cutting cylinder 25. The fixed cutter 27 is fixedly installed on the cutting support 26. The movable cutter 28 is hingedly connected to the fixed cutter 27 at the middle part of the movable cutter 28. One end of the movable cutter 28 is hingedly connected to the extending end of the cutting cylinder 25. The cutting cylinder 25 drives the movable cutter 28 to rotate around the hinge point of the movable cutter 28 and the fixed cutter 27 to realize the fixed-length cutting of the paper tape. The structure is simple, and the cutting is convenient and fast.

[0047] As shown in Figure 1 , Figure 2 , Figure 7 and Figure 8As shown, the glue applying mechanism includes glue applying vertical plates 29, a fourth driving motor 30, a first glue roller 31, a second glue roller 32, a third glue roller 33, a glue supply pipe 34, a glue supply barrel 44 and a glue supply pump 36. The two glue applying vertical plates 29 are symmetrically connected to the first base 1. The first glue roller 31, the second glue roller 32 and the third glue roller 33 are connected between the two glue applying vertical plates 29. The second glue roller 32 is located obliquely above the first glue roller 31 and can be adjusted to adjust the gap between the first glue roller 31 and the second glue roller 32, thereby adjusting the speed of the glue flowing between the first glue roller 31 and the second glue roller 32. The third glue roller 33 is located obliquely below the first glue roller 31 and is adjusted by glue roller connecting blocks 35 installed at both ends of the third glue roller 33. Specifically, an arc-shaped groove with the center of the first glue roller 31 as the center is processed on the glue applying vertical plate 29. One end of the glue roller connecting block 35 is installed in the arc-shaped groove by bolts, and the other end of the glue roller connecting block 35 is connected with the third glue roller 33. By adjusting the position of the glue roller connecting block 35 in the arc-shaped groove, the distance between the first glue roller 31 and the third glue roller 33 is adjusted, so that the first glue roller 31 and the third glue roller 33 can keep the paper tape tight and be conveyed. The fourth driving motor 30 is installed on the outside of one of the glue applying vertical plates 29. The fourth driving motor 30 and the first glue roller 31 are in transmission connection. The second glue roller 32 and the third glue roller 33 are in gear meshing transmission with the first glue roller 31, respectively.

[0048] The glue supply pump 36 is installed on the first base 1. The glue supply barrel 44 is installed on the ground on one side of the first base 1. The glue supply pipe 34 is installed on the first base 1 and located above the first glue roller 31 and the second glue roller 32. The glue supply pipe 34 can be adjusted in height and position to adjust the glue supply position. The glue supply pump 36 is in communication with the glue supply barrel 44 and the glue supply pipe 34 through pipelines. A glue receiving disc 41 is installed below the second glue roller 32. Glue receiving boxes 42 are installed on the inner walls of the two glue applying vertical plates 29. A glue receiving funnel 43 is installed on the first base 1 between the two glue applying vertical plates 29. The excess glue flowing from between the first glue roller 31 and the second glue roller 32 and both ends is received by the glue receiving disc 41, the glue receiving boxes 42 and the glue receiving funnel 43, preventing the glue from flowing randomly and polluting the equipment and the environment. The glue receiving funnel 43 is in communication with the glue supply barrel 44 to flow the received glue back into the glue supply barrel 44 for recycling.

[0049] The anti-adhesion connecting rod 37 is connected between the two glue applying vertical plates 29, the anti-adhesion connecting rod 38 is installed on the anti-adhesion connecting rod 37, one end of the anti-adhesion connecting rod 38 is fixedly installed on the anti-adhesion connecting rod 37, the other end of the anti-adhesion connecting rod 38 is provided with the anti-adhesion scraping blade 39, the lower end of the anti-adhesion scraping blade 39 is processed into a thin blade with a sharp end, the sharp end abuts against the first glue roller 31, the handle 40 is fixedly installed on the anti-adhesion connecting rod 37, the position of the anti-adhesion scraping blade 39 in contact with the first glue roller 31 is adjusted through the handle 40, and the position of the anti-adhesion scraping blade 39 is locked after being adjusted to the position and being fixed on the glue applying vertical plate 29.

[0050] The glue pump 36 works to convey the glue in the glue supply barrel 44 to the glue supply pipe 34, the glue is sprinkled between the first glue roller 31 and the second glue roller 32 through the glue supply pipe 34, the first glue roller 31, the second glue roller 32 and the third glue roller 33 rotate to drive the paper tape to move forward, meanwhile, the glue is applied to the upper surface of the paper tape through the gap between the first glue roller 31 and the second glue roller 32, the paper tape with the glue applied is driven to move forward and is easily adhered to the first glue roller 31, when the front end of the paper tape touches the anti-adhesion scraping blade 39, the paper tape is peeled off from the first glue roller 31 by the sharp end of the anti-adhesion scraping blade 39, so that the paper tape is prevented from being adhered to the first glue roller 31, and the excess glue can fall into the glue receiving disc 41, the glue receiving box 42 and the glue receiving funnel 43 to be reused.

[0051] As shown in Figure 1 , Figure 2 and Figure 4 , the conveying mechanism completes the adsorption and conveying of the paper tape after the glue is applied by generating negative pressure, the conveying mechanism comprises a power frame 45, a conveying belt 46 and a centrifugal fan 47, the power frame 45 is installed on the second base 2, the inside of the power frame 45 is hollow, the upper surface of the power frame 45 is provided with a ventilation hole 48, the conveying belt 46 is arranged on the power frame 45 and is driven to rotate by the power frame 45, the conveying belt 46 is provided with air holes 49, and the centrifugal fan 47 is installed on the second base 2 and communicates with the inside of the power frame 45 through an air suction pipe 50.

[0052] The centrifugal fan 47 sucks out the air in the power frame 45 through the air suction pipe 50 to generate negative pressure in the inside of the power frame 45, the negative pressure adsorbs the paper tape on the conveying belt 46 through the ventilation hole 48 and the air holes 49, and the power frame 45 drives the conveying belt 46 to rotate to convey the paper tape forward.

[0053] As shown in Figure 1 , Figure 2 , Figure 9 - Figure 11 , the bonding mechanism is used for positioning and rotating the workpiece and bonding the paper tape to the edge of the workpiece through cooperation with the conveying mechanism.

[0054] The bonding mechanism comprises a mounting base plate 51, a first vertical column 52, a second vertical column 53, a mounting frame 54, a combined lifting unit, a positioning assembly, an edge pressing assembly, a tidying assembly, a rotating assembly and a pressing assembly. The mounting base plate 51 is connected to the second base 2 through two first linear guides 55. The mounting base plate 51 can be adjusted in position relative to the second base 2 along the first linear guides 55. Limiting screws are mounted on both sides of the mounting base plate 51 to limit the range of adjustment of the mounting base plate 51. The first vertical column 52 and the second vertical column 53 are respectively mounted on both sides of the mounting base plate 51. The combined lifting unit is mounted on the first vertical column 52. A second linear guide 56 is mounted on the second vertical column 53. The mounting frame 54 is connected between the combined lifting unit and the second linear guide 56. The positioning assembly, the edge pressing assembly, the tidying assembly, the rotating assembly and the pressing assembly are all connected to the mounting frame 54.

[0055] The combined lifting unit comprises a manual lifting assembly and a pneumatic lifting assembly. The manual lifting assembly comprises a manual lead screw 64, a third linear guide 65 and a first lifting plate 66. The manual lead screw 64 and the third linear guide 65 are both mounted on the first vertical column 52. The first lifting plate 66 is connected to the third linear guide 65 and is threadedly connected to the manual lead screw 64. The pneumatic lifting assembly comprises a lifting cylinder 67, a fourth linear guide 68 and a second lifting plate 69. The lifting cylinder 67 is mounted on the top of the first lifting plate 66. The fourth linear guide 68 is mounted on the first lifting plate 66. The second lifting plate 69 is connected to the fourth linear guide 68. The extending end of the lifting cylinder 67 is connected to the second lifting plate 69. A fifth linear guide 70 is mounted on the second lifting plate 69. One side of the mounting frame 54 is connected to the fifth linear guide 70. A tension spring 71 is connected between the second lifting plate 69 and the mounting frame 54. The tension spring 71 can make the mounting frame 54 have a tendency to move upward. The other side of the mounting frame 54 is connected to the second linear guide 56. By rotating the manual lead screw 64, the pneumatic lifting assembly and the mounting frame 54 can be lifted as a whole. According to the different heights of the mounting frame 54, different diameter workpieces can be clamped for edge sealing. After the workpiece is mounted on the mounting frame 54, the lifting cylinder 67 drives the mounting frame 54 and the workpiece to descend and press on the paper tape. When pressing, the conveying belt 46 generates a reaction force on the workpiece, so that the workpiece and the mounting frame 54 can slide upward along the second linear guide 56 and the fifth linear guide 70, avoiding that the workpiece cannot rotate due to excessive pressing force of the conveying belt 46 and the paper tape. The tension spring 71 is stretched to provide auxiliary tension to the upward sliding of the workpiece and the mounting frame 54.

[0056] The rotating assembly comprises a fifth driving motor 72, a rotating base 73 and a first pressing plate 74, the fifth driving motor 72 and the rotating base 73 are both installed on the side of the installation frame 54 close to the combined lifting unit, the first pressing plate 74 is rotatably connected to the rotating base 73, the first pressing plate 74 is in transmission connection with the fifth driving motor 72, the first pressing plate 74 is driven to rotate by the fifth driving motor 72, the pressing assembly comprises a pressing cylinder 75, a pressing base 76 and a second pressing plate 77, the pressing cylinder 75 is installed on the side of the installation frame 54 close to the second vertical column 53, the pressing base 76 is connected to the extending end of the pressing cylinder 75, the second pressing plate 77 is rotatably connected to the pressing base 76, the workpiece is placed in the middle of the installation frame 54 and is tightly pressed against the first pressing plate 74, the pressing cylinder 75 drives the pressing base 76 and the second pressing plate 77 to extend, so that the workpiece is tightly pressed against the first pressing plate 74, the fifth driving motor 72 drives the first pressing plate 74, the workpiece and the second pressing plate 77 to rotate, and in the process of rotation, the paper tape is bonded to the circumferential edge of the workpiece;

[0057] The positioning assembly comprises a positioning cylinder 78 and a positioning disc 79, the positioning cylinder 78 is installed on the installation frame 54 on the same side as the pressing cylinder 75, the positioning disc 79 is connected to the extending end of the positioning cylinder 78, a plurality of positioning shafts 80 are distributed on the positioning disc 79 along the circumference, when the workpiece is installed, the positioning cylinder 78 and the pressing cylinder 75 are synchronously extended, the workpiece is clamped and positioned and is tightly pressed by the plurality of positioning shafts 80, after the positioning is completed, the positioning cylinder 78 is retracted, and the pressing cylinder 75 keeps the workpiece tightly pressed, different positioning discs 79 can be replaced according to the different sizes of the workpiece to meet the positioning needs, and the adaptation range is wide;

[0058] The arrangement assembly is installed on the inclined side of the installation frame 54, the arrangement assembly comprises an arrangement cylinder 81, an arrangement connecting block 82 and arrangement guide rods 83, the fixed end of the arrangement cylinder 81 is connected to the installation frame 54, the arrangement connecting block 82 is connected to the extending end of the arrangement cylinder 81, the two arrangement guide rods 83 are located on the two sides of the arrangement cylinder 81, the arrangement guide rods 83 pass through the installation frame 54 and are connected to the arrangement connecting block 82, two arrangement blocks 84 are installed on the arrangement connecting block 82, the arrangement blocks 84 are rotatably connected to the arrangement connecting block 82, the cross section of the arrangement blocks 84 is processed into a T shape, the two T-shaped arrangement blocks 84 are oppositely installed and are staggered with each other, an arrangement limiting plate 85 is installed on the arrangement guide rod 83, a damper 63 is installed on the arrangement limiting plate 85, when the workpiece is bonded, the arrangement cylinder 81 extends, the two T-shaped arrangement blocks 84 are close to the two sides of the circumferential edge of the workpiece, the paper tape is arranged, and the stroke of the arrangement cylinder 81 can be limited according to the installation position of the arrangement limiting plate 85 on the arrangement guide rod 83, so that the use needs of different specifications of workpieces are met;

[0059] The upper top assembly is installed on the inclined side of the mounting frame 54, and the upper top assembly comprises an upper top cylinder 86, an upper top connecting block 87 and two upper top guide rods 88, the fixed end of the upper top cylinder 86 is connected to the mounting frame 54, the upper top connecting block 87 is connected to the extending end of the upper top cylinder 86, the two upper top guide rods 88 are located on the two sides of the upper top cylinder 86, the upper top guide rods 88 are connected to the upper top connecting block 87 through the mounting frame 54, two upper top blocks 89 are mounted on the upper top connecting block 87, the upper top blocks 89 are rotatably connected to the upper top connecting block 87, the cross section of the upper top blocks 89 is processed into a T shape, the two T-shaped upper top blocks 89 are oppositely mounted and staggered with each other, a upper top limiting plate 90 is mounted on the upper top guide rod 88, and a damper 63 is mounted on the upper top limiting plate 90, when the workpiece is bonded, the upper top cylinder 86 extends, the two T-shaped upper top blocks 89 are close to the two sides of the circumferential edge of the workpiece, the workpiece is limited, and the stroke of the upper top cylinder 86 can be limited according to the mounting position of the upper top limiting plate 90 on the upper top guide rod 88, so that the use requirement of workpieces of different specifications can be met.

[0060] The edge pressing assembly is installed on the horizontal side of the mounting frame 54, and the edge pressing assembly comprises an edge pressing cylinder 57, a cylinder support 58, a clamping jaw cylinder 59 and two edge pressing guide rods 60, the fixed end of the edge pressing cylinder 57 is connected to the mounting frame 54, the cylinder support 58 is connected to the extending end of the edge pressing cylinder 57, the two edge pressing guide rods 60 are located on the two sides of the edge pressing cylinder 57, one end of the edge pressing guide rod 60 is connected to the cylinder support 58 through the mounting frame 54, the clamping jaw cylinder 59 is mounted on the cylinder support 58, the two clamping jaws of the clamping jaw cylinder 59 are each provided with a rotatable edge pressing wheel 61, the other end of the edge pressing guide rod 60 is provided with an edge pressing limiting plate 62, the extending stroke of the edge pressing cylinder 57 can be adjusted according to the mounting position of the edge pressing limiting plate 62 on the edge pressing guide rod 60, so that the use requirement of workpieces of different diameters can be met, the damper 63 is mounted on the edge pressing limiting plate 62, the impact of the edge pressing limiting plate 62 on the mounting frame 54 is reduced, after the paper tape bonded on the workpiece is arranged by the arranging assembly, the edge pressing cylinder 57 extends, the two edge pressing wheels 61 are driven to move to the two sides of the workpiece, the clamping jaw cylinder 59 is actuated, the two edge pressing wheels 61 are pressed on the two side walls of the workpiece, when the workpiece rotates to bond the paper tape, the two edge pressing wheels 61 are driven to rotate, the bonded paper tape is compacted, and the bonding quality of the paper tape is improved.

[0061] The transmission mode of the embodiment is but not limited to a synchronous belt transmission mode, the first driving motor 13, the second driving motor 17, the third driving motor 19, the fourth driving motor 30 and the fifth driving motor 72 adopt a stepping motor or a servo motor

[0062] The working principle of the utility model is:

[0063] In use, the paper tape material disc is installed on the installation shaft 4, and the paper tape is pulled around the tensioning shaft 7, the end of the paper tape is sequentially threaded between the driving roller 11 and the driven roller 12, between the hob 16 and the supporting roller 15, the workpiece is installed on the installation frame 54, when the workpiece is installed, the positioning cylinder 78 and the pressing cylinder 75 are extended, and the arrangement cylinder 81 is retracted, the workpiece is manually taken to make the outer circumferential edge of the workpiece abut between the plurality of positioning shafts 80, the workpiece is pressed by the pressing cylinder 75, and parameters are set on the control cabinet 8 according to the size of the workpiece;

[0064] The equipment is started, the paper tape is driven forward by the driving roller 11 and the driven roller 12, when the length of the paper tape is adapted to the model of the workpiece, the cutting cylinder 25 drives the movable cutter 28 to cut the paper tape, when the paper tape passes between the first rubber roller 31 and the third rubber roller 33, the upper surface of the paper tape is coated with glue, the centrifugal fan 47 generates negative pressure in the power frame 45, the paper tape is adsorbed on the conveying belt 46, the conveying belt 46 rotates to convey the paper tape to the bonding mechanism, in the conveying process, the hot air drying channel 9 heats and dries the glue on the paper tape, accelerates the drying speed of the glue, and improves the bonding efficiency;

[0065] The lifting cylinder 67 drives the workpiece to descend, the workpiece abuts on the conveying belt 46, the fifth driving motor 72 drives the workpiece to rotate, and the conveying belt 46 continuously conveys the paper tape forward, and the two cooperate to realize that the paper tape is bonded at the circumferential edge of the workpiece, and the bonding effect of the paper tape is improved through the cooperation of the arrangement assembly and the edge pressing assembly.

[0066] The above only describes the preferred embodiments of the present application, and is not intended to limit the scope of the present application. Any equivalent changes and modifications made within the scope of the present application shall be within the technical scope of the present application.

Claims

1. An edge banding machine comprising a first base (1) and a second base (2) connected to each other, characterized in that: The first base (1) is provided with a mounting vertical plate (3), a paper feeding mechanism, a rolling mechanism, an auxiliary paper feeding mechanism and a gluing mechanism, the mounting vertical plate (3) is provided with a mounting shaft (4), the two paper feeding mechanisms are connected to the mounting vertical plate (3), the rolling mechanism is arranged between the two paper feeding mechanisms, the gluing mechanism is arranged at one end of the first base (1), the auxiliary paper feeding mechanism is arranged between the gluing mechanism and one of the paper feeding mechanisms, the second base (2) is provided with a conveying mechanism, a bonding mechanism and a control cabinet (8), the bonding mechanism is arranged at the end of the second base (2) away from the first base (1), the conveying mechanism extends along the length direction of the second base (2), a hot air drying channel (9) is arranged above the conveying mechanism on the second base (2), the control cabinet (8) is arranged at one side of the second base (2), and the paper feeding mechanism, the rolling mechanism, the auxiliary paper feeding mechanism, the gluing mechanism, the conveying mechanism, the bonding mechanism and the hot air drying channel (9) are electrically connected with the control cabinet (8).

2. The edge banding machine of claim 1, wherein: One end of the mounting shaft (4) is provided with a tension controller (5), the tension controller (5) is electrically connected with a torque controller (6) arranged on the first base (1), a plurality of tensioning shafts (7) are arranged on the mounting vertical plate (3) and located at one side of the mounting shaft (4), and the tensioning shafts (7) are rotatably connected with the mounting vertical plate (3).

3. The edge banding machine of claim 1, wherein: The paper feeding mechanism comprises a side plate (10), a driving roller (11) and a driven roller (12), the side plate (10) is arranged in parallel with the mounting vertical plate (3), the driving roller (11) and the driven roller (12) are arranged side by side between the mounting vertical plate (3) and the side plate (10), the driving roller (11) is in transmission connection with the driven roller (12), and the driving rollers (11) of the two paper feeding mechanisms are in transmission connection with a first driving motor (13) arranged on the first base (1).

4. The edge banding machine of claim 1, wherein: The rolling mechanism comprises a rolling support (14), a supporting roller (15), a rolling cutter (16) and a second driving motor (17), the rolling support (14) is arranged on the first base (1), the supporting roller (15) and the rolling cutter (16) are arranged side by side on the rolling support (14), the rolling cutter (16) is arranged above the supporting roller (15), the rolling cutter (16) is in transmission connection with the supporting roller (15), and the second driving motor (17) is arranged on the mounting vertical plate (3) and in transmission connection with the supporting roller (15).

5. The edge banding machine of claim 1, wherein: The auxiliary paper feeding mechanism comprises an auxiliary paper feeding roller (18), a third driving motor (19), a limiting pressing plate (20) and an auxiliary roller (21), the third driving motor (19) is arranged on the mounting vertical plate (3), the third driving motor (19) is in transmission connection with the auxiliary paper feeding roller (18), the limiting pressing plate (20) is arranged above the auxiliary paper feeding roller (18), a plurality of uniformly distributed through holes (22) are arranged on the limiting pressing plate (20) in the length direction, a steel ball (23) is arranged in the through hole (22), a blocking strip (24) is arranged on the limiting pressing plate (20), the auxiliary roller (21) is arranged above the feeding end of the auxiliary paper feeding roller (18), and the auxiliary roller (21) is in transmission connection with the auxiliary paper feeding roller (18).

6. The edge banding machine of claim 1, wherein: The auxiliary paper feeding mechanism is provided with a cutting mechanism near the end of the paper feeding mechanism, the cutting mechanism comprises a cutting cylinder (25), a cutting support (26), a fixed cutter (27) and a movable cutter (28), the cutting cylinder (25) is arranged on the first base (1), the cutting support (26) is arranged on the top surface of the fixed end of the cutting cylinder (25), the fixed cutter (27) is fixedly arranged on the cutting support (26), the movable cutter (28) is hingedly arranged with the fixed cutter (27), and one end of the movable cutter (28) is hingedly connected with the extension end of the cutting cylinder (25).

7. The edge banding machine of claim 1, wherein: The glue applying mechanism comprises glue applying vertical plates (29), a fourth driving motor (30), a first glue roller (31), a second glue roller (32), a third glue roller (33) and a glue supply pipe (34), the two glue applying vertical plates (29) are symmetrically arranged on the first base (1), the first glue roller (31) is rotatably arranged between the two glue applying vertical plates (29), the fourth driving motor (30) is arranged outside one of the glue applying vertical plates (29), the first glue roller (31) is in driving connection with the fourth driving motor (30), the second glue roller (32) is arranged obliquely above the first glue roller (31), the third glue roller (33) is adjustably arranged obliquely below the first glue roller (31) through glue roller connecting blocks (35) on the two sides, the second glue roller (32) and the third glue roller (33) are in driving connection with the first glue roller (31) respectively, the glue supply pipe (34) is adjustably arranged above the first glue roller (31) and the second glue roller (32), the glue supply pipe (34) is in communication with a glue supply pump (36), the glue applying vertical plate (29) is provided with an anti-adhesion rod (37) at the top, an anti-adhesion connecting rod (38) is fixedly arranged on the anti-adhesion rod (37), an anti-adhesion scraping blade (39) is arranged at the end of the anti-adhesion connecting rod (38) away from the anti-adhesion rod (37), the anti-adhesion scraping blade (39) abuts against the first glue roller (31), a handle (40) is fixedly arranged on the anti-adhesion rod (37), a glue receiving disc (41) is arranged below the second glue roller (32), a glue receiving box (42) is arranged on the inner wall of the glue applying vertical plate (29), and a glue receiving funnel (43) is arranged on the first base (1) between the two glue applying vertical plates (29), the glue receiving funnel (43) is in communication with a glue supply barrel (44) arranged on one side of the first base (1).

8. The edge banding machine of claim 1, wherein: The conveying mechanism comprises a power frame (45), a conveying belt (46) and a centrifugal fan (47), the power frame (45) is arranged on the second base (2), the conveying belt (46) is arranged around the power frame (45), the power frame (45) is arranged in a hollow structure, the upper surface of the power frame (45) is provided with ventilation holes (48), the conveying belt (46) is provided with air holes (49), and the centrifugal fan (47) is arranged on the second base (2) and is in communication with the inside of the power frame (45) through an air suction pipe (50).

9. The edge banding machine of claim 1, wherein: The bonding mechanism comprises a mounting bottom plate (51), a first column (52), a second column (53), a mounting frame (54), a combined lifting unit, a positioning assembly, an edge pressing assembly, a arranging assembly, a rotating assembly, a pressing assembly and an upending assembly, the mounting bottom plate (51) is arranged on the second base (2) through a first linear guide rail (55), the first column (52) and the second column (53) are arranged on the two sides of the mounting bottom plate (51), the combined lifting unit is arranged on the first column (52), a second linear guide rail (56) is arranged on the second column (53), the mounting frame (54) is arranged between the combined lifting unit and the second linear guide rail (56), the positioning assembly, the edge pressing assembly, the arranging assembly, the rotating assembly, the pressing assembly and the upending assembly are all arranged on the mounting frame (54), the edge pressing assembly comprises an edge pressing cylinder (57), a cylinder support (58), a clamping jaw cylinder (59) and an edge pressing guide rod (60), the cylinder support (58) is arranged on the extending end of the edge pressing cylinder (57), the clamping jaw cylinder (59) is arranged on the cylinder support (58), rotatable edge pressing wheels (61) are arranged on the two clamping jaws of the clamping jaw cylinder (59), one end of the edge pressing guide rod (60) is connected to the cylinder support (58), the other end of the edge pressing guide rod (60) is provided with an edge pressing limiting plate (62), and a damper (63) is arranged on the edge pressing limiting plate (62).

10. The edge banding machine of claim 9, wherein: The combination lifting unit comprises a manual lifting assembly and a pneumatic lifting assembly, the manual lifting assembly comprises a manual screw rod (64), a third linear guide rail (65) and a first lifting plate (66), the manual screw rod (64) and the third linear guide rail (65) are arranged on the first vertical column (52), the first lifting plate (66) is arranged on the third linear guide rail (65) and is in threaded connection with the manual screw rod (64), the pneumatic lifting assembly comprises a lifting cylinder (67), a fourth linear guide rail (68) and a second lifting plate (69), the lifting cylinder (67) and the fourth linear guide rail (68) are arranged on the first lifting plate (66), the second lifting plate (69) is arranged on the fourth linear guide rail (68), the extending end of the lifting cylinder (67) is connected with the second lifting plate (69), the fifth linear guide rail (70) is arranged on the second lifting plate (69), one side of the mounting frame (54) is connected with the fifth linear guide rail (70), the tensile spring (71) is arranged between the second lifting plate (69) and the mounting frame (54), the rotating assembly comprises a fifth driving motor (72), a rotating seat (73) and a first pressing plate (74), the fifth driving motor (72) and the rotating seat (73) are arranged on the mounting frame (54), the first pressing plate (74) is rotatably arranged on the rotating seat (73), the first pressing plate (74) is in transmission connection with the fifth driving motor (72), the pressing assembly comprises a pressing cylinder (75), a pressing seat (76) and a second pressing plate (77), the pressing cylinder (75) is arranged on the mounting frame (54), the pressing seat (76) is connected at the extending end of the pressing cylinder (75), the second pressing plate (77) is rotatably arranged on the pressing seat (76), the positioning assembly comprises a positioning cylinder (78) and a positioning disc (79), the positioning cylinder (78) is arranged on one side of the mounting frame (54), the positioning disc (79) is arranged at the extending end of the positioning cylinder (78), a plurality of positioning shafts (80) are arranged on the positioning disc (79) in a circumferential direction, the arrangement assembly comprises an arrangement cylinder (81), an arrangement connecting block (82) and an arrangement guide rod (83), the arrangement cylinder (81) is arranged on the oblique side of the mounting frame (54), the arrangement connecting block (82) is connected with the extending end of the arrangement cylinder (81), the arrangement guide rod (83) passes through the mounting frame (54) and is connected with the arrangement connecting block (82), two rotatable arrangement blocks (84) are oppositely and staggeredly arranged on the arrangement connecting block (82), the arrangement limiting plate (85) is arranged on the arrangement guide rod (83), the damper (63) is arranged on the arrangement limiting plate (85), the upper top assembly comprises an upper top cylinder (86), an upper top connecting block (87) and an upper top guide rod (88), the upper top cylinder (86) is arranged above the mounting frame (54), the upper top connecting block (87) is connected with the extending end of the upper top cylinder (86), the upper top guide rod (88) passes through the mounting frame (54) and is connected with the upper top connecting block (87),Two rotatable upper top blocks (89) are oppositely and alternately arranged on the upper top connecting block (87), and an upper top limiting plate (90) is arranged on the upper top guide rod (88), and a damper (63) is arranged on the upper top limiting plate (90).

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