Flattening device for corrugated paper production

Abstract

The utility model discloses a flattening device for corrugated paper production, which belongs to the field of corrugated paper flattening and comprises a workbench, and a mounting side plate is detachably arranged on the workbench. According to the flattening device for corrugated paper production, by means of the arranged mechanical arm and the grabbing component located on the mechanical arm, when corrugated paper is grabbed and transferred, a worker starts a second electric air cylinder, so that the output end of the second electric air cylinder outputs the corrugated paper, the two sets of clamping jaw bearing plates are driven to be close to each other, and then the corrugated paper is flattened. The first electric cylinder is started to grab corrugated paper on the bearing support, and after the corrugated paper is grabbed, the output end of the first electric cylinder outputs the corrugated paper, so that the lower pressing plate is driven to move downwards, the corrugated paper is pressed and positioned, and the corrugated paper on the placing plate is flattened; the corrugated paper can be conveniently grabbed and fed, the corrugated paper can be conveniently pushed into the flattening component, and the usability is high.

Description

Technical Field

[0001] The utility model belongs to the field of corrugated paper flattening, and in particular relates to a flattening device used for corrugated paper production. Background Art

[0002] Corrugated paperboard is a multi-layer adhesive body, which is composed of at least one layer of corrugated core paper and one layer of paperboard. It has high mechanical strength and can withstand collisions and falls during transportation. The actual performance of corrugated paperboard depends on three factors: the characteristics of the core paper and paperboard and the structure of the carton itself; the corrugated core paper is the main component of corrugated paper, and its quality directly affects the overall strength of the corrugated paper. The raw materials of corrugated paper can be hardwood pulp, agricultural waste pulp such as wheat straw and bagasse, or even waste paper pulp that has been reused many times. Moreover, corrugated paper is recyclable and can be processed and used repeatedly. Compared with ordinary paper materials, corrugated paper is more environmentally friendly;

[0003] In the process of producing corrugated cardboard, it is necessary to flatten the corrugated cardboard. In the process of flattening the corrugated cardboard, the staff is required to place the corrugated cardboard in the flattening device and turn on the flattening device so that the flattening device can flatten the corrugated cardboard.

[0004] However, during the mass production process, workers are required to repeatedly load corrugated paper into the flattening device, which results in low filling efficiency and high work intensity. Secondly, when loading corrugated paper into the flattening device, multiple pushes are required, and the pushing efficiency is low, which urgently needs to be improved.

[0005] The present invention seeks to alleviate or at least mitigate such problems or deficiencies by providing a new or otherwise improved corrugated paper flattening method. Utility Model Content

[0006] In view of one or more of the above defects or improvement needs of the prior art, the utility model provides a flattening device for corrugated paper production, which has the advantages of convenient grabbing and feeding and relatively convenient when pushing the corrugated paper into the flattening component.

[0007] To achieve the above-mentioned purpose, the utility model provides a flattening device for corrugated paper production, which includes a workbench on which a mounting side plate is detachably arranged;

[0008] A load-bearing bracket for supporting and placing multiple groups of corrugated paper, which is detachably arranged on the workbench;

[0009] A manipulator, which is detachably arranged on the workbench and has a grasping member for gripping the corrugated paper;

[0010] A pushing member, which is detachably arranged on the workbench and located at one side of the manipulator; and

[0011] A flattening component for flattening corrugated paper, which is detachably arranged on the mounting side plate;

[0012] The manipulator is used to place the grabbing member after grabbing the corrugated paper above the pushing member, so as to pile the corrugated paper on the pushing member;

[0013] The pushing member is used for pushing the corrugated paper into the flattening member.

[0014] As a further improvement of the utility model, the supporting bracket is located on one side of the manipulator, and the size of the supporting bracket is adapted to the size of the workbench. The supporting bracket is composed of two groups of vertical sections and multiple groups of horizontal sections connected to the two groups of vertical sections.

[0015] As a further improvement of the utility model, the grabbing member comprises

[0016] A connecting substrate is detachably arranged on the manipulator;

[0017] A first electric cylinder is detachably arranged on the connecting substrate, and a lower pressure plate is detachably arranged on an output end of the first electric cylinder;

[0018] Two sets of second electric cylinders are detachably mounted on both sides of the connecting substrate, and an inclined rod is detachably mounted on the output end thereof, and the inclined rod passes through the connecting substrate;

[0019] Two sets of rotating plates are rotatably arranged on the connecting base plate and are detachably connected to the inclined rod respectively; and

[0020] Two groups of clamping jaws bearing plates are detachably arranged on the rotating plate, and multiple groups of clamping jaws are detachably mounted thereon;

[0021] When the output end of the second electric cylinder outputs, it is used to drive the two groups of the clamping claw bearing plates to approach each other so as to grab the corrugated paper placed on the bearing bracket;

[0022] When the output end of the first electric cylinder outputs, it is used to drive the lower pressing plate to move downward to press down the corrugated paper for positioning.

[0023] As a further improvement of the present invention, the multiple groups of the clamping jaws are arranged along the length direction of the clamping jaw supporting plate, the spacing between every two groups of the clamping jaws is the same, and the clamping jaws are in an inclined L shape.

[0024] As a further improvement of the present invention, the pushing component comprises

[0025] A first bottom plate is detachably arranged on the workbench and is located at one side of the manipulator;

[0026] A guide plate, which is detachably arranged on the first bottom plate, and on which a first slide rail is detachably arranged;

[0027] A third electric cylinder is detachably mounted on the guide plate, and a pushing substrate is detachably arranged on the output end thereof;

[0028] A first sliding block is detachably disposed at the bottom of the pushing substrate and is slidably disposed in the first sliding rail; and

[0029] A top plate, which is detachably arranged on the pushing base plate, and on which a placing plate for supporting corrugated paper is detachably arranged;

[0030] When the output end of the third electric cylinder outputs, it is used to drive the placement plate to move toward the inside of the flattening component.

[0031] As a further improvement of the present invention, a reinforcing rib is detachably arranged on the top plate, and the reinforcing rib is detachably connected to the placement plate, and the reinforcing rib is used to reinforce the position of the placement plate on the top plate.

[0032] As a further improvement of the utility model, the flattening component comprises

[0033] A second bottom plate, which is detachably arranged on the mounting side plate, and on which a supporting frame is integrally formed;

[0034] a fourth electric cylinder, which is detachably mounted on the support frame, and whose output end penetrates into the support frame;

[0035] A second shaft seat, which is detachably arranged on the support frame and is in communication with the support frame, and in which a sliding rod is slidably arranged; and

[0036] A flattening substrate is detachably mounted on a tail end of the slide rod, a first shaft seat is detachably arranged on the flattening substrate, and the first shaft seat is detachably connected to the output end of the fourth electric cylinder;

[0037] When the placing plate is pushed above the second bottom plate and below the flattening base plate, the output end of the fourth electric cylinder outputs, so as to flatten the corrugated paper placed on the placing plate.

[0038] As a further improvement of the utility model, a second slide rail is detachably arranged on the inner wall of the support frame;

[0039] A second sliding block is detachably arranged on the side surface of the flattening base plate, and the second sliding block is slidably connected to the second slide rail.

[0040] In general, compared with the prior art, the above technical solutions conceived by the utility model have the following beneficial effects:

[0041] The utility model is used for the flattening device of corrugated paper production. Through the arranged manipulator and the grabbing member on the manipulator, when the corrugated paper is grabbed and transported, the staff turns on the second electric cylinder to make the output end of the second electric cylinder output, so as to drive the two groups of clamping claw bearing plates to approach each other, so as to grab the corrugated paper placed on the bearing bracket. After grabbing the corrugated paper, the first electric cylinder is turned on to make the output end of the first electric cylinder output, so as to drive the lower pressing plate to move downward, so as to press the corrugated paper downward and position it. After the corrugated paper is grabbed, the manipulator is turned on to make the grabbing member whole The body moves to the top of the pushing component and places the corrugated paper in the pushing component. Through the arranged pushing component, the third electric cylinder is turned on, so that the output end of the third electric cylinder outputs, so as to drive the placing plate to move toward the inside of the flattening component. Through the arranged flattening component, when the placing plate is pushed to the top of the second bottom plate and below the flattening base plate, the fourth electric cylinder can be turned on, so that the output end of the fourth electric cylinder outputs, so as to flatten the corrugated paper placed on the placing plate. It is convenient to grab and feed materials and it is relatively convenient to push the corrugated paper into the flattening component, and it is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 This is a schematic diagram of the overall structure of the flattening device used for corrugated paper production according to the utility model;

[0043] Figure 2 This is a schematic structural diagram of the flattening device used for corrugated paper production of the utility model from another angle;

[0044] Figure 3 It is a schematic diagram of the overall structure of the grabbing component of the utility model;

[0045] Figure 4 This is a schematic diagram of the overall structure of the grabbing component of the utility model viewed from another angle;

[0046] Figure 5 It is a schematic diagram of the overall structure of the pushing component of the utility model;

[0047] Figure 6 It is a schematic structural diagram of the overall flattening component of the utility model.

[0048] In all the drawings, the same figure numbers represent the same technical features, specifically: 1. workbench; 11. mounting side plate; 2. supporting bracket; 3. manipulator; 4. grasping member; 41. connecting substrate; 42. first electric cylinder; 43. lower pressure plate; 44. second electric cylinder; 45. inclined rod; 46. rotating plate; 47. clamping claw supporting plate; 48. clamping claw; 5. pushing member; 51. first bottom plate; 52. guide plate; 53. first slide rail; 54. third electric cylinder; 55. pushing substrate; 56. first slider; 57. top plate; 58. placing plate; 6. flattening member; 61. second bottom plate; 62. supporting frame; 63. fourth electric pneumatic rod; 64. slide rod; 65. flattening substrate; 66. first shaft seat; 67. second shaft seat; 68. second slide rail; 69. second slider. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0050] The terms used herein are only for describing specific embodiments and are not intended to limit the present invention. The terms "include", "comprises", etc. used herein indicate the existence of the features, steps, operations and / or components, but do not exclude the existence or addition of one or more other features, steps, operations or components.

[0051] All terms (including technical and scientific terms) used herein have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein should be interpreted as having a meaning consistent with the context of this specification, and should not be interpreted in an idealized or overly rigid manner.

[0052] In the embodiment, Figure 1-6 A flattening device for corrugated paper production is provided, wherein: Figure 1 This is a schematic diagram of the overall structure of the flattening device used for corrugated paper production according to the utility model; Figure 2 This is a schematic structural diagram of the flattening device used for corrugated paper production of the utility model from another angle; Figure 3 It is a schematic diagram of the overall structure of the grabbing component of the utility model; Figure 4 This is a schematic diagram of the overall structure of the grabbing component of the utility model viewed from another angle; Figure 5 It is a schematic diagram of the overall structure of the pushing component of the utility model; Figure 6It is a schematic diagram of the overall structure of the flattening component of the utility model, which includes a workbench 1, on which a mounting side plate 11 is detachably arranged; a supporting bracket 2 for supporting and holding multiple groups of corrugated paper, which is detachably arranged on the workbench 1; a manipulator 3, which is detachably arranged on the workbench 1 and has a grabbing component 4 for clamping and grabbing the corrugated paper; a pushing component 5, which is detachably arranged on the workbench 1 and is located on one side of the manipulator 3; and a flattening component 6 for flattening the corrugated paper, which is detachably arranged on the mounting side plate 11; wherein the manipulator 3 is used to place the grabbing component 4 after grabbing the corrugated paper above the pushing component 5, so as to pile the corrugated paper on the pushing component 5; the pushing component 5 is used to push the corrugated paper into the flattening component 6.

[0053] The utility model is based on an overall idea that, through the deployment of the manipulator 3 and the grabbing member 4 located on the manipulator 3, when the corrugated paper is grabbed and transported, the staff turns on the second electric cylinder 44 so that the output end of the second electric cylinder 44 outputs, so as to drive the two groups of clamping claw bearing plates 47 to approach each other, so as to grab the corrugated paper placed on the bearing bracket 2. After grabbing the corrugated paper, the first electric cylinder 42 is turned on so that the output end of the first electric cylinder 42 outputs, so as to drive the lower pressing plate 43 to move downward, so as to press the corrugated paper downward and position it. Then, the manipulator 3 is turned on to make the grabbing member 4 run as a whole. To the top of the pushing member 5 and place the corrugated paper in the pushing member 5, through the arranged pushing member 5, the third electric cylinder 54 is turned on, so that the output end of the third electric cylinder 54 outputs, so as to drive the placing plate 58 to move toward the inside of the flattening member 6, and through the arranged flattening member 6, when the placing plate 58 is pushed to the top of the second bottom plate 61 and the bottom of the flattening base plate 65, the fourth electric cylinder 63 can be turned on, so that the output end of the fourth electric cylinder 63 outputs, so as to flatten the corrugated paper placed on the placing plate 58. It is convenient to grab and feed materials and it is relatively convenient to push the corrugated paper into the flattening member, and it is easy to use.

[0054] In some embodiments, in order to facilitate the support bracket 2 to support and hold multiple groups of corrugated paper, the structure and construction of the support bracket 2 are further explained. The support bracket 2 is located on one side of the manipulator 3, and the size of the support bracket 2 is adapted to the size of the workbench 1. The support bracket 2 is composed of two groups of vertical segments and multiple groups of horizontal segments connected to the two groups of vertical segments.

[0055] In a more specific embodiment, the horizontal sections in the supporting bracket 2 are four groups, so that the supporting bracket 2 presents a ladder shape.

[0056] In some embodiments, the manipulator 3 is a known component in the prior art, and its operating control principle is also a known principle in the prior art, so no further elaboration is made in the present utility model.

[0057] Next, a more specific structure and construction is given to the whole grasping member 4 for further explanation. The grasping member 4 includes a connecting substrate 41, which is detachably arranged on the manipulator 3; a first electric cylinder 42, which is detachably arranged on the connecting substrate 41, and a lower pressure plate 43 is detachably arranged on its output end; two groups of second electric cylinders 44, which are detachably installed on both sides of the connecting substrate 41, and a slanting rod 45 is detachably installed on its output end, and the slanting rod 45 passes through the connecting substrate 41; two groups of rotating plates 46, which are rotatably arranged on the connecting substrate 41, and are detachably connected to the slanting rod 45; and two groups of clamping claw bearing plates 47, which are detachably arranged on the rotating plates 46, and multiple groups of clamping claws 48 are detachably installed thereon;

[0058] Next, the overall use principle of the grabbing member 4 is further explained. The staff turns on the second electric cylinder 44 so that the output end of the second electric cylinder 44 outputs to drive the two sets of clamping claw bearing plates 47 to approach each other so as to grab the corrugated paper placed on the bearing bracket 2. On the contrary, when the output end of the second electric cylinder 44 is retracted, the two sets of clamping claw bearing plates 47 are moved away from each other.

[0059] Secondly, when the staff turns on the first electric cylinder 42, the output end of the first electric cylinder 42 is output to drive the lower pressure plate 43 to move downward to press the corrugated paper downward. Conversely, the output end of the first electric cylinder 42 is recovered to release the downward pressure on the corrugated paper.

[0060] In some embodiments, in order to facilitate the insertion and grabbing of the jaws 48 from both sides of the corrugated paper, multiple groups of jaws 48 are arranged along the length direction of the jaw supporting plate 47, the spacing between each two groups of jaws 48 is the same, and the jaws 48 are in an inclined L shape.

[0061] Next, the pushing member 5 is given a more specific structure and construction as a whole for further explanation. The pushing member 5 includes a first bottom plate 51, which is detachably arranged on the workbench 1 and is located on one side of the manipulator 3; a guide plate 52, which is detachably arranged on the first bottom plate 51, and a first slide rail 53 is detachably arranged thereon; a third electric cylinder 54, which is detachably mounted on the guide plate 52, and a pushing base plate 55 is detachably arranged at its output end; a first slider 56, which is detachably arranged at the bottom of the pushing base plate 55, and is slidably arranged in the first slide rail 53; and a top plate 57, which is detachably arranged on the pushing base plate 55, and a placement plate 58 for supporting corrugated paper is detachably arranged thereon;

[0062] Next, the overall working principle of the pushing member 5 is further explained. The staff turns on the third electric cylinder 54 so that the output end of the third electric cylinder 54 outputs to drive the placing plate 58 to move toward the inside of the flattening member 6 to complete the pushing operation of the corrugated paper.

[0063] In some embodiments, in order to facilitate the reinforcement of the position of the placement plate 58 on the top plate 57, a reinforcing rib is detachably provided on the top plate 57, and the reinforcing rib is detachably connected to the placement plate 58, and the reinforcing rib is used to reinforce the position of the placement plate 58 on the top plate 57.

[0064] Next, a more specific structure and construction is given to the flattening member 6 as a whole for further explanation. The flattening member 6 includes a second bottom plate 61, which is detachably arranged on the mounting side plate 11, and a support frame 62 is arranged on it in an integral manner; a fourth electric cylinder 63, which is detachably mounted on the support frame 62, and its output end penetrates into the support frame 62; a second shaft seat 67, which is detachably arranged on the support frame 62 and is connected to the support frame 62, and a slide bar 64 is slidably arranged therein; and a flattening base plate 65, which is detachably mounted on one end of the slide bar 64, and a first shaft seat 66 is detachably arranged thereon, and the first shaft seat 66 is detachably connected to the output end of the fourth electric cylinder 63;

[0065] Next, the use principle of the flattening member 6 as a whole is further explained. The staff pushes the placement plate 58 to the top of the second bottom plate 61 and the bottom of the flattening base plate 65;

[0066] Then, the switch of the fourth electric cylinder 63 is turned on, so that the output end of the fourth electric cylinder 63 is output, so as to flatten the corrugated paper placed on the placing plate 58. On the contrary, when the output end of the fourth electric cylinder 63 is recovered, the flattening operation of the corrugated paper is completed.

[0067] After the flattening operation of the corrugated paper is completed, the output end of the third electric cylinder 54 is retracted so that the placing plate 58 retreats to the initial position.

[0068] In some embodiments, in order to make the slide rod 64 smoother when pushing the flattening substrate 65, a second slide rail 68 is detachably provided on the inner wall of the support frame 62; a second slider 69 is detachably provided on the side surface of the flattening substrate 65, and the second slider 69 is slidably connected to the second slide rail 68.

[0069] In summary, through the deployed manipulator 3 and the grabbing member 4 located on the manipulator 3, when the corrugated paper is grabbed and transported, the staff turns on the second electric cylinder 44 so that the output end of the second electric cylinder 44 outputs, so as to drive the two sets of clamping claw bearing plates 47 to approach each other, so as to grab the corrugated paper placed on the bearing bracket 2. After grabbing the corrugated paper, the first electric cylinder 42 is turned on so that the output end of the first electric cylinder 42 outputs, so as to drive the lower pressing plate 43 to move downward, so as to press the corrugated paper downward and position it. Then, the manipulator 3 is turned on so that the grabbing member 4 moves as a whole to the upper side of the pushing member 5. The corrugated paper is placed in the pushing member 5, and the third electric cylinder 54 is turned on through the arranged pushing member 5, so that the output end of the third electric cylinder 54 outputs, so as to drive the placing plate 58 to move toward the inside of the flattening member 6. Through the arranged flattening member 6, when the placing plate 58 is pushed above the second bottom plate 61 and below the flattening base plate 65, the fourth electric cylinder 63 can be turned on, so that the output end of the fourth electric cylinder 63 outputs, so as to flatten the corrugated paper placed on the placing plate 58. It is convenient to grab and feed the material and it is relatively convenient to push the corrugated paper into the flattening member, and it is easy to use.

[0070] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flattening device for corrugated paper production, characterized in that: It includes A workbench (1) on which a mounting side panel (11) is detachably arranged; A support frame (2) for supporting and placing multiple groups of corrugated paper, which is detachably arranged on the workbench (1); A robot (3) which is detachably arranged on the workbench (1) and has a grasping member (4) thereon for grasping corrugated paper; A pushing member (5) is detachably arranged on the workbench (1) and is located on one side of the manipulator (3); and A flattening component (6) for flattening corrugated paper, which is detachably arranged on the mounting side plate (11); The manipulator (3) is used to place the grabbing member (4) after grabbing the corrugated paper above the pushing member (5) so as to pile the corrugated paper on the pushing member (5); The pushing member (5) is used to push the corrugated paper into the flattening member (6).

2. The flattening device for corrugated paper production according to claim 1, characterized in that: The supporting bracket (2) is located on one side of the robot (3), and the size of the supporting bracket (2) is compatible with the size of the workbench (1). The supporting bracket (2) is composed of two groups of vertical sections and a plurality of groups of horizontal sections connected to the two groups of vertical sections.

3. The flattening device for corrugated paper production according to claim 2, characterized in that: The gripping member (4) comprises A connecting substrate (41) which is detachably arranged on the robot arm (3); A first electric cylinder (42) is detachably arranged on the connecting substrate (41), and a lower pressure plate (43) is detachably arranged on the output end thereof; Two sets of second electric cylinders (44) are detachably mounted on both sides of the connecting substrate (41), and an inclined rod (45) is detachably mounted on the output end thereof, and the inclined rod (45) passes through the connecting substrate (41); Two sets of rotating plates (46) are respectively rotatably arranged on the connecting base plate (41) and are respectively detachably connected to the inclined rod (45); and Two groups of clamping jaws bearing plates (47) are respectively detachably arranged on the rotating plate (46), and multiple groups of clamping jaws (48) are detachably mounted thereon; When the output end of the second electric cylinder (44) outputs, it is used to drive the two groups of the clamping claw bearing plates (47) to approach each other so as to grab the corrugated paper placed on the bearing bracket (2); When the output end of the first electric cylinder (42) outputs, it is used to drive the lower pressing plate (43) to move downward, so as to press down and position the corrugated paper.

4. The flattening device for corrugated paper production according to claim 3, characterized in that: The multiple groups of clamping jaws (48) are arranged along the length direction of the clamping jaw supporting plate (47), the spacing between every two groups of clamping jaws (48) is the same, and the clamping jaws (48) are in an inclined L shape.

5. The flattening device for corrugated paper production according to claim 4, characterized in that: The pushing component (5) comprises A first bottom plate (51) is detachably arranged on the workbench (1) and is located on one side of the robot (3); A guide plate (52) is detachably arranged on the first bottom plate (51), and a first slide rail (53) is detachably arranged on the guide plate; A third electric cylinder (54) is detachably mounted on the guide plate (52), and a pushing base plate (55) is detachably arranged on the output end thereof; A first sliding block (56) is detachably arranged at the bottom of the pushing base plate (55) and is slidably arranged in the first sliding rail (53); and A top plate (57) is detachably arranged on the pushing base plate (55), and a placement plate (58) for supporting corrugated paper is detachably arranged on the top plate; When the output end of the third electric cylinder (54) outputs, it is used to drive the placement plate (58) to move toward the inside of the flattening component (6).

6. The flattening device for corrugated paper production according to claim 5, characterized in that: A reinforcing rib is detachably arranged on the top plate (57), and the reinforcing rib is detachably connected to the placement plate (58), and the reinforcing rib is used to reinforce the position of the placement plate (58) on the top plate (57).

7. The flattening device for corrugated paper production according to claim 6, characterized in that: The flattening member (6) comprises A second bottom plate (61) is detachably arranged on the mounting side plate (11), and a supporting frame (62) is integrally formed thereon; a fourth electric cylinder (63) which is detachably mounted on the support frame (62), and whose output end penetrates into the support frame (62); A second shaft seat (67) is detachably arranged on the support frame (62) and is in communication with the support frame (62), and a sliding rod (64) is slidably arranged therein; and A flattening base plate (65) is detachably mounted on one end of the slide bar (64), on which a first shaft seat (66) is detachably arranged, and the first shaft seat (66) is detachably connected to the output end of the fourth electric cylinder (63); When the placement plate (58) is pushed above the second bottom plate (61) and below the flattening base plate (65), the output end of the fourth electric cylinder (63) is output to flatten the corrugated paper placed on the placement plate (58).

8. The flattening device for corrugated paper production according to claim 7, characterized in that: A second slide rail (68) is detachably arranged on the inner wall of the support frame (62); A second sliding block (69) is detachably arranged on the side surface of the flattening base plate (65), and the second sliding block (69) is slidably connected to the second sliding rail (68).

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