Gluing and pre-pressing device for oil duct curtain

Abstract

The utility model discloses a gluing and pre-pressing device for an oil duct curtain, belongs to the technical field of oil duct curtains, and aims to solve the problems of unstable connection between a supporting strip and a white strip due to non-uniform force control during manual pressing; the problems that in the prior art, the manual gluing effect is poor, uneven gluing on the two sides of the bottom face of a supporting strip is likely to occur, connection between the supporting strip and a white strip is not stable, and pressing and gluing integration is difficult to achieve are solved, and the device comprises a frame, two symmetrically-distributed side plates are fixed to one side of the top face of the frame, and a connecting plate is fixed between the top faces of the two side plates; second positioning columns are fixed to the two sides of the top face of the connecting plate correspondingly. The supporting strip can be placed on the top face of the placing strip, and after the supporting strip and the white strip are pressed, the placing strip can reset to press the next supporting strip, so that the supporting strip and the white strip can be automatically pressed, the pressing efficiency is improved, meanwhile, the situation that the pressing force of the supporting strip and the white strip is not uniform, and the pressing efficiency is not uniform is avoided. And the connection between the supporting strip and the white strip is not stable.

Description

TECHNICAL FIELD

[0001] The utility model belongs to oil way curtain technical field, concretely relates to oil way curtain gluing pre -pressing device. BACKGROUND

[0002] The existing oil way curtain is pressed when supporting strip and white strip, generally supporting strip bottom surface both sides are glued by manual, then supporting strip is pressed to two section white strip top surface, this kind of mode is not only inefficient, and manual pressure is uneven, causes supporting strip and white strip connection unstable, manual gluing effect is poor, and supporting strip bottom surface both sides are unevenly glued, further causes supporting strip and white strip connection unstable, and difficult to realize pressing gluing integration.

[0003] Therefore, oil way curtain gluing pre -pressing device is needed, the uneven force is grasped when manual pressure, causes supporting strip and white strip connection unstable, manual gluing effect is poor, and supporting strip bottom surface both sides are unevenly glued, further causes supporting strip and white strip connection unstable, and difficult to realize pressing gluing integration problem in prior art. UTILITY MODEL CONTENTS

[0004] The utility model discloses a purpose at providing oil way curtain gluing pre -pressing device to solve the problem in the background art.

[0005] In order to achieve the above object, the utility model provides the following technical scheme: oil way curtain gluing pre -pressing device, including frame, the frame top surface one side is fixed with two symmetrical distribution's side plate, two the side plate top surface is fixed with the connecting plate, the connecting plate top surface both sides are fixed with second positioning column respectively, two second positioning column top surface is fixed with the top plate, the top plate top surface middle part is fixed with the gas cylinder, the gas cylinder output passes through the top plate, two second positioning column outer lateral wall is movably connected with the moving frame, the gas cylinder output and the moving frame top surface are fixed, the moving frame one side is fixed with two symmetrical distribution's press strip, the connecting plate top surface one side is provided with the placement strip, the placement strip and the connecting plate are fixed with four springs between the mutually close one side, the frame top surface other side is provided with the gluing assembly.

[0006] It needs to be explained in the scheme that the gluing assembly includes two fixed plates, two the fixed plate is movably connected with the rotating rod between mutually close one side, the rotating rod outer lateral wall is fixed with two glue wheels, one side the fixed plate one side is fixed with motor, the motor output and one end of the rotating rod are fixed.

[0007] It is further worth mentioning that the frame top surface other side is fixed with the placement block, and the placement block top surface is fixed with the storage box.

[0008] Further need to explain is, the frame top surface other side is fixed with C type frame, the C type frame inner side wall is close to each other one side surface interval movable connection has two-way screw rod, two-way screw rod one side non threaded position passes through the C type frame, two-way screw rod one end is fixed with hand wheel, two-way screw rod outer side wall both sides are movably connected with threaded block, threaded block bottom surface is in contact with the C type frame inner side wall bottom surface, two threaded block top surface is fixed with inclined block respectively, two inclined block is symmetrically distributed.

[0009] As a preferred embodiment, the other side of the top surface of the frame is fixed with two fixed rods, one end of the fixed rod is fixed with a guide rail, a sliding block is movably connected to the guide rail, and a stable rod is fixed between the two sliding blocks. One side of the sliding block is fixed with a mounting plate, and one side of the mounting plate close to the bottom of the guide rail is movably connected with a pulley, the pulley is matched with the inclined block, and the fixed plate is fixed on one side of the mounting plate.

[0010] As a preferred embodiment, the top plate and the side of the frame top surface are fixed between each other on one side, and four first positioning columns are arranged on one side of the top plate and the side of the frame top surface. The first rotating shaft is movably connected between the top of the two side plates on one side, the second rotating shaft is movably connected between the bottom of the two side plates on one side, and the opening is formed in the side of the frame opposite to the rubber coating wheel.

[0011] As a preferred embodiment, the top surface of the frame is provided with a conveyor, one end of the conveyor belt of the conveyor is located below the connecting plate, the top surface of the top plate is fixed with an alarm, one side of the frame is fixed with a PLC controller, and the cylinder and the alarm are respectively electrically connected with the PLC controller.

[0012] As a preferred embodiment, the bottom surface of the placing strip is fixed with two movable columns on both sides, the movable columns pass through the spring, and the movable columns pass through the connecting plate.

[0013] Compared with the prior art, the oil way curtain glue pre-pressing device has at least the following beneficial effects:

[0014] (1) By setting the cylinder, moving frame and pressing strip, the white strip and support strip can be pressed and bonded together, by setting the placing strip and spring, the support strip can be placed on the top surface of the placing strip, and after the support strip and white strip are pressed, the placing strip can be reset for pressing the next support strip, so that the support strip can be automatically pressed with the white strip, the pressing efficiency is improved, and the uneven pressing force of the support strip and white strip is avoided, which causes unstable connection of the support strip and white strip.

[0015] (2) Through the storage box, the glue can be stored, through the bidirectional threaded rod, threaded sleeve, inclined block, roller, sliding block and mounting plate, the position of the glue applying wheel can be adjusted, and then the glue applying wheel can be located in the storage box, through the glue applying wheel, the bottom surface of the supporting strip can be coated with glue, so that the bottom surface of the supporting strip can be uniformly coated with glue, the glue coating and pressing integration is realized, and the uneven coating of the bottom surface of the supporting strip is avoided, and the unstable connection of the supporting strip and the white strip is avoided.

[0016] (3) Through the alarm and the PLC controller, the supporting strip with inconsistent flatness on the top surface can be detected, and the quality of the oil channel curtain after production is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a whole structure schematic view of the utility model;

[0018] Figure 2 It is the utility model Figure 1 It is a local enlarged structure schematic view of A;

[0019] Figure 3 It is a sliding block structure schematic view of the utility model;

[0020] Figure 4 It is a placing strip structure schematic view of the utility model.

[0021] In the drawing:

[0022] 100, frame; 101, side plate; 102, connecting plate; 103, first positioning column; 104, top plate; 105, air cylinder; 106, second positioning column; 107, moving frame;

[0023] 200, pressing strip; 201, placing strip; 202, spring; 203, movable column;

[0024] 300, alarm; 301, PLC controller;

[0025] 400, first rotating shaft; 401, second rotating shaft; 403, opening;

[0026] 500, C-shaped frame; 501, bidirectional threaded rod; 502, hand wheel; 503, threaded block; 504, inclined block; 505, guide rail; 506, fixed rod; 507, sliding block; 508, mounting plate; 509, roller;

[0027] 600, fixed plate; 601, rotating rod; 602, glue applying wheel; 603, motor;

[0028] 700, storage box; 701, placing block;

[0029] 800, Conveyor. DETAILED DESCRIPTION

[0030] Referring to Figures 1-4 The utility model provides oil channel curtain gluing pre -pressing device, including frame 100, one side fixed with two symmetrical distribution's side plate 101 of frame 100 top surface, two side plate 101 top surface interval fixed with connecting plate 102, the connecting plate 102 top surface both sides are fixed with second positioning column 106 respectively, two second positioning column 106 top surface fixed with top plate 104, the top plate 104 top surface middle part is fixed with pneumatic cylinder 105, pneumatic cylinder 105 output passes through top plate 104, two second positioning column 106 outer lateral wall is movably connected with moving frame 107, pneumatic cylinder 105 output and moving frame 107 top surface are fixed, moving frame 107 one side is fixed with two symmetrical distribution's press strip 200, the connecting plate 102 top surface one side is provided with and places strip 201, places strip 201 and the connecting plate 102 mutually close one side surface interval fixed with four springs 202, frame 100 top surface other side is provided with gluing assembly.

[0031] Further as Figure 1 The gluing assembly includes two fixed plates 600, two fixed plates 600 are movably connected with rotating rods 601 between the mutually close sides, the rotating rods 601 are fixed with two gluing wheels 602 on the outer lateral walls, one side of the fixed plate 600 is fixed with a motor 603 on one side, and the output end of the motor 603 is fixed with one end of the rotating rod 601.

[0032] The gluing wheel 602 is provided, so that the gluing wheel 602 can be glued after being glued, and the bottom surface of the supporting strip can be glued.

[0033] Further as Figure 1 The top surface of the frame 100 is fixed with a placing block 701 on the other side, and the top surface of the placing block 701 is fixed with a storage box 700.

[0034] The storage box 700 is provided, so that the glue can be stored in the storage box 700.

[0035] Further as Figure 1 and Figure 2As shown, the other side of the top surface of the frame 100 is fixed with a C-shaped frame 500, the inner side wall of the C-shaped frame 500 is movably connected with a bidirectional threaded rod 501 on one side, the non-threaded position of one side of the bidirectional threaded rod 501 penetrates through the C-shaped frame 500, one end of the bidirectional threaded rod 501 is fixedly connected with a hand wheel 502, the outer side wall of the bidirectional threaded rod 501 is movably connected with a threaded block 503 on both sides, the bottom surface of the threaded block 503 is in contact with the bottom surface of the inner side wall of the C-shaped frame 500, and the top surfaces of the two threaded blocks 503 are fixedly connected with inclined blocks 504, and the two inclined blocks 504 are symmetrically distributed.

[0036] The bidirectional threaded rod 501 is arranged, so that the two threaded blocks 503 can approach or move away from each other, and the inclined blocks 504 are arranged, so that when the two threaded blocks 503 approach or move away from each other, the height of the sliding block 507 can be adjusted, and the position of the glue applying wheel 602 can be adjusted.

[0037] Further as shown in Figure 1 and Figure 3 the other side of the top surface of the frame 100 is fixed with two fixed rods 506, one end of the fixed rod 506 is fixedly connected with a guide rail 505, the guide rail 505 is movably connected with a sliding block 507, the two sliding blocks 507 are fixedly connected with a stable rod on one side, one side of the sliding block 507 is fixedly connected with a mounting plate 508, the mounting plate 508 is movably connected with a pulley near the bottom of one side of the guide rail 505, the pulley is matched with the inclined block 504, and the fixed plate 600 is fixed on one side of the mounting plate 508.

[0038] The guide rail 505, the pulley and the sliding block 507 are arranged, so that the height of the glue applying wheel 602 can be adjusted.

[0039] The present scheme has the following working process: when the white strip and the supporting strip are pre-pressed, first, inject glue into the storage box 700, then manually rotate the hand wheel 502, the hand wheel 502 drives the threaded rod to rotate, the threaded rod drives the two threaded sleeves to move close to each other, at this time, the two rollers 509 roll down on the inclined blocks 504 on both sides, so that the two mounting plates 508 move down, the mounting plates 508 drive the two fixed plates 600 to move down, the fixed plates 600 drive the two glue applying wheels 602 to move down, until the glue applying wheels 602 contact with the glue, then start the supporting strip automatic feeding mechanism, the supporting strip automatic feeding mechanism slowly moves the supporting strip from the top surface of the glue applying wheel 602, at the same time, start the motor 603, the motor 603 slowly rotates to drive the rotating rod 601 to rotate, the rotating rod 601 drives the two glue applying wheels 602 to rotate, so that the bottom surface of the supporting strip can be coated with glue when moving, at the same time, start the white strip automatic feeding mechanism and the conveyor 800, the conveyor 800 pulls one end of the two white strips at the same time, the supporting strip is sent to the surface of the two white strips on the top surface of the supporting strip automatic feeding mechanism after being coated with glue, the supporting strip bottom surface two sides are coated with glue at the position corresponding to the top surface of the two white strips, the initial position is flat with the top surface of the first rotating shaft 400 and the placement strip 201, then the conveyor 800 pulls one end of the white strip to move, when the supporting strip moves to the pressing strip 200 below, the PLC controller 301 controls the cylinder 105 to start, the output end moves to drive the moving frame 107 to move, the moving frame 107 drives the two pressing strips 200 to move down, so that the top surface of the supporting strip is pressed by the two pressing strips 200, at this time, the placement strip 201 moves down, the spring 202 is compressed, the supporting and the white strip are pressed and adhered, then the output end of the cylinder 105 moves up, so that the pressing strip 200 resets, at this time, the spring 202 pushes the placement strip 201, so that the placement strip 201 resets, then the conveyor 800 pulls one end of the white strip to move, so that the white strip on the placement strip 201 and the supporting strip move, then the bottom surface of the next supporting strip is coated with glue and positioned on the surface of the white strip on the top surface of the first rotating shaft 400 and the placement strip 201, then according to the above operation, the positioned supporting strip and the white strip are pressed and adhered, so as to repeatedly press and adhere the supporting strip to the top surface of the white strip one by one, and finally transported to the next process by the conveyor 800.

[0040] When the supporting strip with inconsistent flatness on the top surface moves to the bottom of the two pressing strips 200, the resistance of the cylinder 105 increases when moving down, at this time, the cylinder 105 sends a signal to the PLC controller 301, the PLC controller 301 controls the alarm 300 to start and issue an alarm, the operator controls the whole device to be closed, and the supporting strip with inconsistent flatness on the top surface is taken down.

[0041] According to the above working process can be known: through the setting of the cylinder 105, the moving frame 107 and the pressing strip 200, so that the white strip and the supporting strip can be pressed and bonded together, through the setting of the placement strip 201 and the spring 202, so that the supporting strip can be placed on the top surface of the placement strip 201, and at the same time, the supporting strip and the white strip are pressed, the placement strip 201 can reset for the next pressing of the supporting strip, so that the supporting strip can be automatically pressed with the white strip, improve the pressing efficiency, at the same time, avoid the uneven pressing force of the supporting strip and the white strip, causing the unstable connection of the supporting strip and the white strip.

[0042] Through the setting of the storage box 700, the glue can be stored, through the setting of the two-way threaded rod 501, the threaded sleeve, the inclined block 504, the roller 509, the sliding block 507 and the mounting plate 508, the position of the glue applying wheel 602 can be adjusted, so that the glue applying wheel 602 can be located in the storage box 700, through the setting of the glue applying wheel 602, the two sides of the bottom surface of the supporting strip can be coated with glue, so that the two sides of the bottom surface of the supporting strip can be evenly coated with glue, realizing the integration of glue coating and pressing, avoiding the uneven coating of the two sides of the bottom surface of the supporting strip, causing the unstable connection of the supporting strip and the white strip.

[0043] Through the setting of the alarm 300 and the PLC controller 301, the supporting strip with inconsistent flatness on both sides of the top surface can be detected, thereby improving the quality of the oil channel curtain after production.

[0044] Further as shown in Figure 1 , the top plate 104 and the frame 100 top surface one side are fixed with four first positioning columns 103 on one side of the side surface, two side plates 101 are movably connected with first rotating shafts 400 on one side of the top of the side surface, two side plates 101 are movably connected with second rotating shafts 401 on one side of the bottom of the side surface, and the outer side wall of the frame 100 is provided with an opening 403 opposite to one side of the glue applying wheel 602.

[0045] Through the setting of the first rotating shaft 400 and the second rotating shaft 401, the position of the white strip can be turned and moved to the top surface of the placement strip 201.

[0046] Further as shown in Figure 1 , the frame 100 top surface one side is provided with a conveyor 800, one end of the conveyor belt of the conveyor 800 is located below the connecting plate 102, the top surface one side of the top plate 104 is fixed with an alarm 300, one side of the frame 100 is fixed with a PLC controller 301, and the cylinder 105 and the alarm 300 are electrically connected with the PLC controller 301 respectively.

[0047] Through the setting of the conveyor 800, the pressed white strip and supporting strip can be conveyed to the next process by the conveyor 800.

[0048] Further as Figure 4 The bottom of the placement strip 201 is fixed with two movable columns 203 on both sides, the movable columns 203 correspond to pass through the spring 202, and the movable columns 203 movably pass through the connecting plate 102.

[0049] The spring 202 is arranged, so that after the pressing strip 200 presses the support strip and the white strip, the spring 202 can reset, so that the pressing strip 200 presses the next support strip, the movable column 203 is arranged, so that the position of the placement strip 201 can be movably limited.

[0050] Two guide rails 505 are arranged on the top surface and are provided with a support strip automatic feeding mechanism for conveying the support strip, and the inner side wall of the frame 100 is provided with a white strip automatic feeding mechanism, which is not shown in the figure. One end of the two sections of white strip passes through the opening 403 and covers the first rotating shaft 400 and the second rotating shaft 401, and passes through between the pressing strip 200 and the placement strip 201, until the one end of the white strip is located on the conveyor 800. The white strip has two sections, which are wound on the white strip automatic feeding mechanism, and the pressed support strip and the two sections of white strip are distributed in a cross shape.

[0051] In summary: when the white strip and the supporting strip are pre-pressed, the glue is first injected into the storage box 700, and then the hand wheel 502 is manually rotated, the hand wheel 502 drives the threaded rod to rotate, the threaded rod drives the two threaded sleeves to move close to each other, at this time the two rollers 509 roll down on the inclined blocks 504 on both sides, so that the two mounting plates 508 move downward, the mounting plates 508 drive the two fixed plates 600 to move downward, the fixed plates 600 drive the two glue applying wheels 602 to move downward, until the glue applying wheels 602 come into contact with the glue, then the supporting strip automatic feeding mechanism is started, the supporting strip automatic feeding mechanism slowly moves the supporting strip from the top surface of the glue applying wheel 602, at the same time the motor 603 is started, the motor 603 slowly rotates to drive the rotating rod 601 to rotate, the rotating rod 601 drives the two glue applying wheels 602 to rotate, so that the bottom surface of the supporting strip can be coated with glue while moving, at the same time the white strip automatic feeding mechanism and the conveyor 800 are started, the conveyor 800 pulls one end of the two white strips at the same time, the supporting strip after being coated with glue is sent by the supporting strip automatic feeding mechanism to the surface of the two white strips on the top surface of the first rotating shaft 400 and the placement strip 201, the supporting strip bottom surface two sides coated with glue are one-to-one corresponding to the top surface of the two white strips, in the initial position, the top surface of the placement strip 201 and the first rotating shaft 400 are level, then the conveyor 800 pulls one end of the white strip to move, so that the white strip and the supporting strip move, when the supporting strip moves directly below the pressing strip 200, the PLC controller 301 controls the cylinder 105 to start, the output end moves to drive the moving frame 107 to move, the moving frame 107 drives the two pressing strips 200 to move downward, so that the top surface of the supporting strip on both sides is pressed by the two pressing strips 200, at this time the placement strip 201 moves downward, the spring 202 is compressed, the supporting and the white strip are pressed and adhered, then the output end of the cylinder 105 moves upward, so that the pressing strip 200 resets, at this time the spring 202 pushes the placement strip 201, so that the placement strip 201 resets, then the conveyor 800 pulls one end of the white strip to move, so that the white strip on the placement strip 201 and the supporting strip move, then the bottom surface of the next supporting strip is coated with glue and positioned on the surface of the white strip on the top surface of the first rotating shaft 400 and the placement strip 201, then according to the above operation, the positioned supporting strip and the white strip are pressed and adhered, and so on, so that the supporting strip is pressed and adhered to the top surface of the white strip one by one, and finally is conveyed by the conveyor 800 to the next process.

[0052] When the supporting strip with inconsistent flatness on both sides of the top surface moves directly below the two pressing strips 200, the resistance of the cylinder 105 increases when it moves downward, at this time the cylinder 105 sends a signal to the PLC controller 301, the PLC controller 301 controls the alarm 300 to start and issue an alarm, the operator controls the entire device to be closed, and the supporting strip with inconsistent flatness on both sides of the top surface is removed.

[0053] The cylinder 105, the alarm 300, the PLC controller 301, the motor 603 and the conveyor 800 can be purchased in the market, which are mature technologies in the field and have been fully disclosed, so the description will not be repeated here.

[0054] While the embodiments of the application have been shown and described, it is to be understood that the embodiments described are only by way of example and that various changes, modifications, substitutions and alterations can be made thereto without departing from the spirit and scope of the application as defined in the following claims and their equivalents.

Claims

1. An oil passage curtain coating glue pre-pressing device, comprising a frame (100), characterized in that, The frame (100) top surface side is fixed with two symmetrically distributed side plates (101), the top surface of the two side plates (101) is fixed with a connecting plate (102), the top surface of the connecting plate (102) is fixed with a second positioning column (106) on both sides respectively, the top surface of the two second positioning columns (106) is fixed with a top plate (104), the top surface of the top plate (104) is fixed with a cylinder (105) in the middle, the output end of the cylinder (105) penetrates through the top plate (104), two second positioning columns (106) are movably connected with a moving frame (107) on the outer side wall, the output end of the cylinder (105) is fixed with the top surface of the moving frame (107), one side of the moving frame (107) is fixed with two symmetrically distributed pressing strips (200), one side of the top surface of the connecting plate (102) is provided with a placing strip (201), the placing strip (201) and the connecting plate (102) are fixed with four springs (202) on the side face away from each other, and the top surface of the other side of the frame (100) is provided with a glue applying assembly.

2. The bead applying pre-press device of claim 1, wherein: The glue applying assembly comprises two fixed plates (600), two rotating rods (601) are movably connected between the side faces away from each other of the two fixed plates (600), two glue applying wheels (602) are fixed on the outer side wall of the rotating rod (601), a motor (603) is fixed on one side face of one side of the fixed plate (600), and the output end of the motor (603) is fixed with one end of the rotating rod (601).

3. The bead of oil curtain glue pre-pressing device according to claim 2, characterized in that: The top surface of the other side of the frame (100) is fixed with a placing block (701), and the top surface of the placing block (701) is fixed with a storage box (700).

4. The bead of oil curtain glue pre-pressing device according to claim 3, characterized in that: The top surface of the other side of the frame (100) is fixed with a C-shaped frame (500), the inner side walls of the C-shaped frame (500) are movably connected between the side faces away from each other, one side of the two-way screw rod (501) penetrates through the C-shaped frame (500) at a non-threaded position, one end of the two-way screw rod (501) is fixed with a hand wheel (502), the outer side wall of the two-way screw rod (501) is movably connected with a threaded block (503) on both sides respectively, the bottom surface of the threaded block (503) is in contact with the bottom surface of the inner side wall of the C-shaped frame (500), the top surfaces of the two threaded blocks (503) are respectively fixed with inclined blocks (504), and the two inclined blocks (504) are symmetrically distributed.

5. The bead of oil curtain glue pre-pressing device according to claim 4, characterized in that: The top surface of the other side of the frame (100) is fixed with two fixed rods (506), one end of the fixed rod (506) is fixed with a guide rail (505), the guide rail (505) is movably connected with a sliding block (507), the sliding blocks (507) are fixed with a stabilizing rod between the side faces away from each other, one side of the sliding block (507) is fixed with a mounting plate (508), the mounting plate (508) is movably connected with a pulley at the bottom of the side face close to the guide rail (505), the pulley cooperates with the inclined block (504), and the fixed plate (600) is fixed on the side face of the mounting plate (508).

6. The bead of glue pre-pressing device of oil way curtain according to claim 5, its characterized in that: The top plate (104) and the frame (100) top surface side to side between the four first positioning column (103) is fixed, two side plate (101) each other close to a side of the top between the first rotating shaft (400) is movably connected, two side plate (101) each other close to a side of the bottom between the second rotating shaft (401) is movably connected, the frame (100) outer side wall and the rubber coating wheel (602) opposite side opening (403) is set up.

7. The bead of oil curtain glue pre-pressing device according to claim 6, characterized in that: The top surface of the frame (100) is provided with a conveyor (800), one end of the conveyor belt of the conveyor (800) is located below the connecting plate (102), the top surface of the top plate (104) is fixed with an alarm (300), one side of the frame (100) is fixed with a PLC controller (301), the air cylinder (105) and the alarm (300) are respectively electrically connected with the PLC controller (301).

8. The bead of oil curtain glue pre-pressing device according to claim 7, characterized in that: The bottom surface of the placing strip (201) is fixed with two movable columns (203) on both sides, the movable columns (203) correspond to the spring (202), and the movable columns (203) movably pass through the connecting plate (102).

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