A folding mechanism of an automatic bagging machine

By using a servo motor and lead screw structure to drive the folding knife position adjustment, and combining the motor with gear rack, the problems of low adjustment accuracy and cumbersome equipment in the existing automatic bag-applying machine folding mechanism are solved, achieving efficient and precise bag shape adjustment.

CN224360810UActive Publication Date: 2026-06-16ZHEJIANG QIAOXIAN TECH CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHEJIANG QIAOXIAN TECH CO LTD
Filing Date
2025-07-08
Publication Date
2026-06-16

AI Technical Summary

Technical Problem

The folding mechanism of existing automatic bag-applying machines has poor precision when adjusting the folding knife position, is cumbersome to operate, and is redundant, making it difficult to adapt to the needs of different bag shapes and sizes.

Method used

The initial position adjustment of the middle and side folding blades is driven by a servo motor and a lead screw structure. Combined with the cooperation of the motor and the gear rack, the sliding frame and the lifting frame can be moved precisely, reducing the number of cylinders and simplifying the operation.

Benefits of technology

It improves the precision of folding knife position adjustment and the ease of operation, simplifies the equipment structure, and enhances production efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a kind of folding material mechanisms of automatic bagging machine, it includes base;First driving device, install on base, for driving lifting plate lifting;Second driving device, install on lifting plate, for driving sliding frame along front and back direction translation, sliding frame one side is equipped with vertical plate frame;Third driving device, install on vertical plate frame, for driving lifting frame lifting;Fourth driving device, for driving intermediate folding knife component front and back translation;Fifth driving device, for driving lateral folding knife component left and right translation, the utility model fourth driving device and fifth driving device are all using servo motor+screw structure, can according to bag shape size, adjust the initial position of intermediate folding knife and lateral folding knife, adjustment precision is high, parameter adjustment is convenient, in addition, about the front and back translation of sliding frame, and the lifting of lifting frame, are all using motor, gear and rack mutually coordinated structure to complete, driving is more accurate, overall action is simplified, equipment structure is stable, and practicality is strong.
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Description

Technical Field

[0001] This utility model relates to the technical field of bag-applying machine equipment, and in particular to a folding mechanism for an automatic bag-applying machine. Background Technology

[0002] Automatic bag-applying machines generally include automated processes such as wrinkle-free folding, material pressing, feeding or receiving, automatic sewing, and automatic unloading. Among these, the folding mechanism, which works in conjunction with the wrinkle-free folding, is an important component of the bag-applying machine. During operation, the folding mechanism typically places a piece of bag-shaped fabric on a bag-shaped plate (tongue plate) and uses cooperating concave molds and folding blades (folding sheets) to fold the corresponding sides of the bag-shaped fabric.

[0003] For different bag sizes, it is generally necessary to replace or adjust the folding blades one by one, which is cumbersome and affects production efficiency. Furthermore, it is difficult to simultaneously consider the relative positions of multiple folding blade assemblies during adjustment. In addition, the folding action is usually driven by cylinders, which results in a large number of cylinders being installed on the folding mechanism, making the equipment very cumbersome. To improve operational efficiency and reduce the number of cylinders, Chinese utility model patent CN202421835361.3 discloses a folding blade synchronous adjustment mechanism for a bag-applying machine and the bag-applying machine itself. In this solution, the position adjustment of the folding blades uses a single drive mechanism to adjust multiple folding blade assemblies in a coordinated manner, completing the initial position adjustment of all folding blades at once. However, in practical applications, this adjustment method has certain limitations. First, the cylinder or manual drive method leads to poor adjustment accuracy. Second, since each folding blade assembly is linked to the first drive mechanism, if only the position of some folding blades needs to be adjusted, they must be adjusted individually again after the initial adjustment, which is very inconvenient. Utility Model Content

[0004] To solve the above problems, this utility model proposes a folding mechanism for an automatic bag-applying machine.

[0005] The technical solution adopted in this utility model is: a folding mechanism for an automatic bag-applying machine, comprising:

[0006] Base;

[0007] The first driving device is installed on the base and is used to drive the lifting plate to move up and down;

[0008] The second driving device is installed on the lifting plate and is used to drive the sliding frame to move horizontally in the front-back direction. The sliding frame is provided with a vertical plate frame on one side.

[0009] The third drive device is installed on the upright frame and is used to drive the lifting frame to move up and down;

[0010] The fourth drive device includes a third motor fixed on the lifting frame, a first lead screw linked to the third motor, a first nut seat mounted on the first lead screw, and a connecting plate fixed on the first nut seat. An intermediate folding blade assembly is mounted on the connecting plate.

[0011] The fifth drive device includes a fourth motor fixed on the lifting frame, a second lead screw linked to the fourth motor, a second nut seat mounted on the second lead screw, and an adjustment plate fixed on the second nut seat. A lateral folding knife assembly is mounted on the adjustment plate.

[0012] Several alternative methods are provided below, but they are not intended as additional limitations on the overall solution above. They are merely further additions or optimizations. Provided there are no technical or logical contradictions, each alternative method can be combined individually with respect to the overall solution above, or multiple alternative methods can be combined with each other.

[0013] Preferably, the intermediate folding blade assembly includes a second cylinder fixed to the end of the connecting plate, a first connecting block linked to the second cylinder, and an intermediate folding blade fixed to the first connecting block; the lateral folding blade assembly includes a third cylinder fixed to the adjusting plate, a second connecting block linked to the third cylinder, and an intermediate folding blade fixed to the second connecting block.

[0014] Preferably, the fourth driving device further includes a first bracket fixed in front of the upright frame. The first bracket is used to cooperate in installing the first lead screw. The upright frame is provided with a bearing seat for mounting the end of the second lead screw. There are two second lead screws, both of which are linked to the third motor. The two second lead screws are respectively arranged opposite to each other on the left and right sides of the third motor.

[0015] Preferably, the folding mechanism further includes a cutting tool, the cutting tool comprising:

[0016] The mounting plate is fixed to the lifting frame;

[0017] The fourth cylinder is fixed on the mounting plate and is used to drive the push plate to move back and forth.

[0018] The inserter assembly includes a guide slider that is slidably mounted on the adjustment plate in a front-to-back direction, and an inserter fixed on the guide slider, one side of which is slidably mounted on the push plate in a left-to-right direction.

[0019] Preferably, the lifting frame includes a front plate and a rear plate arranged at a distance from each other, and the third motor, the fourth motor, the first bracket and the mounting plate are all fixedly mounted on the front plate.

[0020] Preferably, the first driving device is a first cylinder fixed on the base, which is used to drive the lifting plate to rise and fall. The second driving device is a first motor fixed on the lifting plate, which is used to drive the first gear to rotate. The sliding frame is provided with a first rack extending in the front-rear direction, and the first gear meshes with the first rack.

[0021] Preferably, the third driving device is a second motor fixedly installed on the upright frame. The second motor is used to drive the second gear to rotate. The rear plate is provided with a second rack extending vertically, and the second gear meshes with the second rack.

[0022] Preferably, the folding mechanism further includes an upper cover plate fixed in front of the lifting frame, the rear plate is provided with a first slider for slidingly mounted on the connecting plate in the front-back direction, and the connecting plate is provided with a second slider for slidingly mounted on the upper cover plate in the front-back direction.

[0023] Preferably, the adjusting plate is fixed with a third slider for sliding on the front plate in the left-right direction, and the third cylinder is fixed with a fourth slider for sliding on the upper cover plate in the left-right direction.

[0024] More preferably, a sliding joint seat is slidably mounted on the sliding frame along the front-to-back direction, and a bag-shaped plate is fixedly mounted on the sliding joint seat.

[0025] Compared with the prior art, this utility model has the following beneficial effects:

[0026] 1. The fourth drive device for driving the middle folding knife assembly to move forward and backward, and the fifth drive device for driving the side folding knife assembly to move left and right, both adopt the structure of servo motor + lead screw. The initial position of the middle folding knife and the side folding knife can be adjusted according to the bag size, with high adjustment accuracy and convenient parameter adjustment.

[0027] 2. The forward and backward translation of the sliding frame and the lifting of the lifting frame are both accomplished by a structure in which motors, gears and racks work together, making the drive more precise;

[0028] 3. The number of folding blades and the number of cylinders used to drive the folding blades to complete the folding action have been reduced, making the operation more streamlined, the equipment structure more stable, and the practicality stronger. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0030] Figure 1 This is a front-view overall structural diagram of one embodiment of this application;

[0031] Figure 2 This is a rear-view overall structural diagram of one embodiment of this application;

[0032] Figure 3 This is a bottom-view overall structural diagram of one embodiment of this application;

[0033] Figure 4 This is an overall structural diagram showing the concealed base, lifting plate, first driving device, second driving device, and front connecting plate in one embodiment of this application.

[0034] Figure 5 for Figure 4 The structural diagram continues to conceal the sliding frame and lifting frame.

[0035] Figure 6 This is a front-view assembly structure diagram of the front connecting plate, the fourth driving device, and the intermediate folding blade assembly in one embodiment of this application;

[0036] Figure 7 This is a rear-view assembly structure diagram of the front connecting plate, the fourth driving device, and the intermediate folding blade assembly in one embodiment of this application.

[0037] Figure 8 This is a schematic diagram of the inserter device in one embodiment of this application.

[0038] The components in the attached diagram are labeled as follows: 1-base, 11-guide sleeve, 2-first drive device, 3-lifting plate, 31-guide rod, 4-sliding frame, 41-upright plate frame, 42-first rack, 5-second drive device, 51-first motor, 52-first gear, 6-lifting frame, 61-rear connecting plate, 62-front connecting plate, 63-second rack, 7-third drive device, 8-fourth drive device, 81-third motor, 82-first bracket, 83-first lead screw, 84-first nut seat, 85-fixing block, 86-connecting plate, 87-first slider, 88-second slider, 9-intermediate. Folding knife assembly, 91-Second cylinder, 92-First connecting block, 93-Intermediate folding knife, 10-Fifth drive device, 101-Fourth motor, 102-Second lead screw, 103-Second nut seat, 104-Adjusting plate, 105-Third slider, 11-Side folding knife assembly, 111-Third cylinder, 112-Second connecting block, 113-Side folding knife, 12-Inserting knife device, 121-Mounting plate, 122-Fourth cylinder, 123-Push plate, 124-Guide slider, 125-Inserting knife, 13-Top cover plate, 131-Connecting block, 14-Bag-shaped plate, 141-Sliding seat.

[0039] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0041] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0042] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0043] Detailed implementation plan: See below Figures 1-8 This utility model relates to a folding mechanism for an automatic bag-applying machine, comprising:

[0044] Base 1;

[0045] The first drive device 2 is installed on the base 1 and is used to drive the lifting plate 3 to rise and fall.

[0046] The second driving device 5 is installed on the lifting plate 3 and is used to drive the sliding frame 4 to move horizontally in the front and rear direction. The sliding frame 4 has a vertical plate frame 41 on one side.

[0047] The third drive unit 7 is installed on the upright frame 41 and is used to drive the lifting frame 6 to rise and fall.

[0048] The fourth drive device 8 includes a third motor 81 fixed on the lifting frame 6, a first lead screw 83 linked to the third motor 81, a first nut seat 84 mounted on the first lead screw 83, and a connecting plate 86 fixed on the first nut seat 84. An intermediate folding knife assembly 9 is mounted on the connecting plate 86.

[0049] The fifth drive device 10 includes a fourth motor 101 fixed on the lifting frame 6, a second lead screw 102 linked to the fourth motor 101, a second nut seat 103 mounted on the second lead screw 102, and an adjustment plate 104 fixed on the second nut seat 103. A side folding knife assembly 11 is mounted on the adjustment plate 104.

[0050] Please see Figure 5 As can be seen, in this embodiment, the intermediate folding blade assembly 9 includes a second cylinder 91 fixed to the end of the connecting plate 86, a first connecting block 92 linked to the second cylinder 91, and an intermediate folding blade 93 fixed to the first connecting block 92; the lateral folding blade assembly 11 includes a third cylinder 111 fixed to the adjusting plate 104, a second connecting block 112 linked to the third cylinder 111, and an intermediate folding blade 93 fixed to the second connecting block 112.

[0051] Then, please see Figure 2 and Figure 3As can be seen, in this embodiment, the first driving device 2 is a first cylinder fixed on the base 1. The first cylinder is used to drive the lifting plate 3 to rise and fall. The second driving device 5 is a first motor 51 fixed on the lifting plate 3. The first motor 51 is used to drive the first gear 52 to rotate. The sliding frame 4 is provided with a first rack 42 extending in the front-back direction. The first gear 52 meshes with the first rack 42.

[0052] Next, in this embodiment, the third driving device 7 is a second motor fixedly installed on the upright frame 41. The second motor is used to drive the second gear to rotate. The lifting frame 6 is provided with a second rack 63 extending vertically, and the second gear meshes with the second rack 63.

[0053] The working principle of the first drive device 2: When it is necessary to drive the lifting plate 3 to rise or fall, the first cylinder operates, driving the lifting plate 3 to rise or fall. Please refer to [link / reference needed]. Figure 3 As can be seen in this embodiment, the base 1 is provided with multiple guide sleeves 11, and the lifting plate 3 is provided with multiple guide rods 31. The guide rods 31 are inserted into the guide sleeves 11, thereby enabling the lifting plate 3 to lift more stably.

[0054] The working principle of the second driving device 5: When it is necessary to drive the sliding frame 4 to move back and forth, the first motor 51 works and drives the first gear 52 to rotate. Since the first gear 52 meshes on the first rack 42 and the first rack 42 is fixed on the sliding frame 4, the sliding frame 4 can be driven to move back and forth.

[0055] The working principle of the third drive device 7: When it is necessary to drive the lifting frame 6 to rise and fall, the second motor works and drives the second gear to rotate. Since the second gear meshes on the second rack 63, and the second rack 63 is fixed on the rear plate 61, the lifting frame 6 is driven to rise and fall.

[0056] Then, please see Figure 4 and Figure 5 As can be seen, the fourth drive device 8 also includes a first bracket 82 fixed in front of the upright frame 41. The first bracket 82 is used to install the first lead screw 83. The upright frame 41 is provided with a bearing seat for the end of the second lead screw 102 to be installed. There are two second lead screws 102, both of which are linked to the third motor 81. The two second lead screws 102 are respectively arranged opposite to each other on the left and right sides of the third motor 81.

[0057] Here, the setting of the first bracket 82 ensures the stable installation of the first lead screw 83.

[0058] Please see Figure 6 and Figure 7The working principle of the fourth driving device 8: When it is necessary to drive the intermediate folding knife assembly 9 to move back and forth, the third motor 81 works and drives the first lead screw 83 to rotate. Since the first nut seat 84 is installed on the first lead screw 83, the connecting plate 86 is fixed on the first nut seat 84, and the intermediate folding knife assembly 9 is fixed on the connecting plate 86, the first nut seat 84, the connecting plate 86 and the intermediate folding knife assembly 9 can be driven to move back and forth together.

[0059] The working principle of the fifth drive device 10: When it is necessary to drive the lateral folding knife assembly 11 to move left and right, the fourth motor 101 works and drives the second lead screw 102 to rotate. Since the second nut seat 103 is installed on the second lead screw 102, the adjusting plate 104 is fixed on the first nut seat 84, and the lateral folding knife assembly 11 is fixed on the adjusting plate 104, the second nut seat 103, the adjusting plate 104 and the lateral folding knife assembly 11 can be driven to move left and right together.

[0060] Here, two second lead screws 102 are set up. Through a fourth motor 101, the two side folding knife assemblies 11 can be driven to move left and right in opposite directions to complete the folding action of the left and right ends of the bag-shaped fabric.

[0061] Please see Figure 5 and Figure 8 As can be seen, in this embodiment, the material bending mechanism further includes a cutting tool 125 device 12, which includes:

[0062] Mounting plate 121 is fixed on lifting frame 6;

[0063] The fourth cylinder 122 is fixed on the mounting plate 121 and is used to drive the push plate 123 to move back and forth.

[0064] The inserter 125 assembly includes a guide slider 124 that is slidably mounted on an adjustment plate 104 in a front-back direction, and an inserter 125 fixed on the guide slider 124. One side of the inserter 125 is slidably mounted on a push plate 123 in a left-right direction.

[0065] The working principle of the inserter 125 device 12: When the fifth drive device 10 drives the adjusting plate 104 to move left and right, the guide slider 124 of the inserter 125 assembly is connected to the adjusting plate 104, which in turn drives the inserter 125 to move left and right along the push plate 123. In addition, when it is necessary to drive the inserter 125 to move back and forth, the fourth cylinder 122 works and drives the mounting plate 121 to move back and forth. Since the guide slider 124 of the inserter 125 assembly is slidably installed in the strip-shaped opening on the adjusting plate 104 (not shown in the figure), the inserter 125 can be driven to move back and forth.

[0066] Please see Figure 1 , Figure 2 , Figure 6 and Figure 7 In this embodiment, the lifting frame 6 includes a front plate 62 and a rear plate 61 arranged at a distance from each other. The third motor 81, the fourth motor 101, the first bracket 82 and the mounting plate 121 are all fixedly installed on the front plate 62, and the second rack 63 is fixed on the rear plate 61.

[0067] Then, please see Figure 4 As can be seen, in this embodiment, the folding mechanism also includes an upper cover plate 13. The upper cover plate 13 is fixed to the front of the lifting frame 6 by a connecting block 131. The rear connecting plate 61 is provided with a first slider 87 for sliding on the connecting plate 86 in the front-back direction. The connecting plate 86 is provided with a second slider 88 for sliding on the upper cover plate 13 in the front-back direction.

[0068] In addition, in this embodiment, a third slider 105 is fixed on the adjusting plate 104 for sliding on the front connecting plate 62 in the left and right direction, and a fourth slider is fixed on the third cylinder 111 for sliding on the upper cover plate 13 in the left and right direction.

[0069] For more details, please see Figure 1 As can be seen, a sliding joint seat 141 is slidably installed on the sliding frame 4 along the front-back direction, and a bag-shaped plate 14 is fixedly installed on the sliding joint seat 141.

[0070] Note that in this embodiment, the sliding frame 4 is equipped with a sixth driving device (not shown in the figure) that drives the sliding seat 141 to move back and forth. The sixth driving device can be a structure of motor + synchronous belt or motor + lead screw.

[0071] Furthermore, in this embodiment, the sliding connections between the first slider 87 and the rear connecting plate 61, the second slider 88 and the upper cover plate 13, the third slider 105 and the front connecting plate 62, and the fourth slider and the upper cover plate 13 all adopt a slider + slider bar cooperative structure, which allows the connecting plate 86 to move back and forth more smoothly and the adjusting plate 104 to move left and right more smoothly.

[0072] In this embodiment, the initial positions of the middle folding blade 93 and the side folding blade 113 can be precisely adjusted by the third motor 81 (servo motor) and the fourth motor 101 (servo motor), respectively, with multiple settings. At different settings, pockets of different sizes can be manually added.

[0073] The above description of the folding mechanism of an automatic bag-applying machine is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made under the inventive concept of the present invention using the contents of the present invention specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A folding mechanism for an automatic bag-applying machine, characterized in that, include: Base; A first driving device is installed on the base and is used to drive the lifting plate to move up and down; The second driving device is installed on the lifting plate and is used to drive the sliding frame to move horizontally in the front-back direction. The sliding frame is provided with a vertical plate frame on one side. The third drive device is installed on the upright frame and is used to drive the lifting frame to move up and down; The fourth drive device includes a third motor fixed on the lifting frame, a first lead screw linked to the third motor, a first nut seat mounted on the first lead screw, and a connecting plate fixed on the first nut seat. An intermediate folding blade assembly is mounted on the connecting plate. The fifth drive device includes a fourth motor fixed on the lifting frame, a second lead screw linked to the fourth motor, a second nut seat mounted on the second lead screw, and an adjustment plate fixed on the second nut seat. A lateral folding knife assembly is mounted on the adjustment plate.

2. The folding mechanism of an automatic bag-applying machine according to claim 1, characterized in that, The intermediate folding blade assembly includes a second cylinder fixed to the end of the connecting plate, a first connecting block linked to the second cylinder, and an intermediate folding blade fixed to the first connecting block; the lateral folding blade assembly includes a third cylinder fixed to the adjusting plate, a second connecting block linked to the third cylinder, and an intermediate folding blade fixed to the second connecting block.

3. The folding mechanism of an automatic bag-applying machine according to claim 2, characterized in that, The fourth driving device further includes a first bracket fixed in front of the upright frame. The first bracket is used to install the first lead screw. The upright frame is provided with a bearing seat for the end of the second lead screw to be installed. There are two second lead screws, both of which are linked to the third motor. The two second lead screws are respectively arranged opposite to each other on the left and right sides of the third motor.

4. The folding mechanism of an automatic bag-applying machine according to claim 3, characterized in that, The material bending mechanism further includes a cutting tool device, which includes: The mounting plate is fixed to the lifting frame; The fourth cylinder is fixed on the mounting plate and is used to drive the push plate to move back and forth. The inserter assembly includes a guide slider that is slidably mounted on the adjustment plate in a front-to-back direction, and an inserter fixed on the guide slider, one side of which is slidably mounted on the push plate in a left-to-right direction.

5. The folding mechanism of an automatic bag-applying machine according to claim 4, characterized in that, The lifting frame includes a front plate and a rear plate arranged at a distance from each other. The third motor, the fourth motor, the first bracket, and the mounting plate are all fixedly mounted on the front plate.

6. The folding mechanism of an automatic bag-applying machine according to claim 5, characterized in that, The first driving device is a first cylinder fixed on the base, which is used to drive the lifting plate to rise and fall. The second driving device is a first motor fixed on the lifting plate, which is used to drive the first gear to rotate. The sliding frame is provided with a first rack extending in the front-back direction, and the first gear meshes with the first rack.

7. The folding mechanism of an automatic bag-applying machine according to claim 6, characterized in that, The third driving device is a second motor fixedly installed on the upright frame. The second motor is used to drive the second gear to rotate. The rear plate is provided with a second rack extending vertically, and the second gear meshes with the second rack.

8. The folding mechanism of an automatic bag-applying machine according to any one of claims 5-7, characterized in that, The folding mechanism also includes an upper cover plate fixed in front of the lifting frame, and the rear plate is provided with a first slider for sliding along the front-back direction on the connecting plate, and the connecting plate is provided with a second slider for sliding along the front-back direction on the upper cover plate.

9. The folding mechanism of an automatic bag-applying machine according to claim 8, characterized in that, The adjustment plate is fixed with a third slider that is slidably mounted on the front plate in the left-right direction, and the third cylinder is fixed with a fourth slider that is slidably mounted on the upper cover plate in the left-right direction.

10. The folding mechanism of an automatic bag-applying machine according to claim 1, characterized in that, A sliding joint seat is slidably installed on the sliding frame along the front-to-back direction, and a bag-shaped plate is fixedly installed on the sliding joint seat.