Laminated multilayer composite non-woven fabric production device

Abstract

The utility model relates to the technical field of multi-layer composite non-woven fabric production, and discloses a laminated multi-layer composite non-woven fabric production device which comprises a driving device and a laminating device. The laminating device can be driven by the driving device to operate, multiple layers of non-woven materials can be laminated and formed through the laminating device, the prepared materials can be cut through matched use of the slitting device and the fixing device, secondary slitting is avoided, and the production efficiency is improved. More non-woven materials and rolled materials can be placed through the two storage racks, falling of the multiple non-woven materials is avoided through connection of the two inserting blocks and the second long rod, the effects that the laminated composite materials can be customized at any time and the production efficiency is improved are achieved, and the problems that the production efficiency is not high enough, and the production cost is low are solved. Only 2-3 different types of materials can be accepted for compounding, and the number of the placing rollers cannot be increased according to the processing requirement.

Description

Technical Field

[0001] The utility model belongs to the technical field of multi-layer composite non-woven fabric production, in particular to a laminated multi-layer composite non-woven fabric production device. Background Art

[0002] Multilayer composite nonwoven fabric is a composite material composed of two or more layers of different materials. These materials are usually nonwoven fabrics, that is, textiles made of fibers through chemical, thermal or mechanical processing. Each layer of material can have different properties.

[0003] The bonding of existing non-woven filter materials mainly relies on thermal bonding or chemical bonding. Thermal bonding mainly refers to hot rolling technology or hot air bonding technology. The equipment used in these two cases is a single-layer composite equipment. The existing non-woven material composite equipment is relatively single and can often only accept 2-3 different types of materials for composite. The production efficiency is low, the speed is slow, the production form is single, and when the prepared and rolled materials need to be slit, secondary processing is required, and the number of placement rollers cannot be increased according to the processing needs. The problems existing in the above technology are: the production efficiency is not high enough, and it can often only accept 2-3 different types of materials for composite, and the number of placement rollers cannot be increased according to the processing needs. Utility Model Content

[0004] In view of the problems existing in the prior art, the utility model provides a laminated multi-layer composite nonwoven fabric production device which can overcome the above problems or at least partially solve the above problems.

[0005] The utility model is implemented as follows: a laminated multi-layer composite nonwoven fabric production device comprises a driving device and a laminating device, wherein the driving device comprises a driver, a steel plate and a control end, the left side of the steel plate is fixedly connected to the right side of the driver, the control end is installed on the front side of the driver, the laminating device is installed on the right side of the driving device, the laminating device comprises a first unwinding roller, a second unwinding roller, a third unwinding roller, a heating roller, a plurality of guide rollers and a winding device, the first unwinding roller, the second unwinding roller, the third unwinding roller, the heating roller, a plurality of guide rollers and the left side of the winding device are all installed on the right side of the steel plate, the bottom of the right side of the steel plate is fixedly connected to a ground blowing pipe, the top of the ground blowing pipe is fixedly connected to an air diffuser, and the top of the air diffuser is fixedly connected to a dustproof net;

[0006] The driving device is used to drive the laminating device to operate;

[0007] The laminating device is used for pressing and molding multi-layer nonwoven materials.

[0008] In order to be able to directly cut the prepared materials and place multiple non-woven materials, preferably, the air diffuser is located at the bottom of the heating roller, and an L-shaped block is fixedly connected to the right side of the bottom of the air diffuser, and the left side of the L-shaped block is fixedly connected to the bottom of the right side of the steel plate, and the left side of the ground blowing pipe can be connected to the bottom of the right side of the driver, and a slitting device is provided on the rear side of the right side of the steel plate, and a fixing device is used in conjunction with the bottom of the slitting device, and storage racks are provided on the front and rear sides of the left side of the driver, and a plurality of holes are opened on the front side of the inner right side of the steel plate, and the prepared material can be cut according to the needs of winding through the slitting device, and the prepared material can be pressed through the fixing device, and more non-woven materials can be placed through the two storage racks, and the unwinding roller can be increased or reduced according to needs through the plurality of holes.

[0009] In order to avoid cutting the prepared material in a secondary process, preferably, the slitting device includes a cutting knife, a protective shell, a fixed plate and two lifting columns, the surface of the cutting knife is fixedly connected to the inside of the protective shell, the left side of the fixed plate is fixedly connected to the right side of the steel plate, the bottoms of the two lifting columns are respectively fixedly connected to the left and right sides of the top of the fixed plate, the output ends of the bottoms of the two lifting columns both pass through the fixed plate, and are respectively fixedly connected to the left and right sides of the top of the protective shell, through the slitting device, after the winding device has wound up the required length as needed, the protective shell drives the cutting knife to move downward through the output ends of the two lifting columns, so that the cutting knife cuts the prepared material.

[0010] In order to facilitate the cutting knife to cut the prepared material, preferably, the fixing device includes a support plate, two clamping blocks, two square blocks, a socket, a screw and two limit columns, the left side of the support plate is fixedly connected to the right side of the steel plate, the bottoms of the two limit columns are respectively fixedly connected to the front and rear sides of the left side of the top of the support plate, the left sides inside the two clamping blocks are slidably connected to the surfaces of the two limit columns, the two square blocks are respectively fixed to the left and right sides of the opposite ends of the two clamping blocks, the left side of the socket is fixedly connected to the right side of the support plate, the surface of the screw is threadedly connected to the internal thread of the right square block, and the bottom of the screw is movably connected to the inside of the socket. Through the fixing device, the screw is turned to make the right square block drive the two clamping blocks to move downward, so that the two clamping blocks clamp the prepared materials, thereby making the cutting process more stable.

[0011] In order to facilitate the preparation of multi-layer non-woven materials, preferably, the storage rack on the front side includes four connecting plates, a column, multiple placement rollers, a movable frame, two first long rods and a second long rod. The right sides of the four connecting plates are fixedly connected to the left side of the driver, the left sides of the four connecting plates are fixedly connected to the right side of the column, the rear sides of the multiple placement rollers are fixedly connected to the front sides of the four connecting plates and are evenly distributed, the front sides of the multiple placement rollers are plug-connected to the inside of the movable frame, the rear sides of the two first long rods are fixedly connected to the top and bottom of the front side of the column respectively, the rear side of the second long rod is fixedly connected to the center of the front side of the column, and the front sides of the two first long rods and the second long rods are plug-connected to the left side inside the movable frame. Through the storage rack, multiple different non-woven materials can be placed on the surfaces of the multiple placement rollers, so that the non-woven materials can be taken out when they are needed.

[0012] In order to facilitate the removal of non-woven materials and prevent non-woven materials from falling from the placement roller, preferably, a protrusion is fixedly connected to the left side of the front side of the movable frame, a cavity is opened inside the protrusion, and two sliding blocks are slidably connected inside the cavity, and the tops of the two sliding blocks are fixedly connected with plug-in blocks, and the opposite ends of the two plug-in blocks are respectively plug-connected to the left and right sides of the front side of the inner side of the second long rod, and the opposite ends of the two sliding blocks are fixedly connected to two elastic springs, which are plug-connected to the front side of the second long rod through the opposite ends of the two plug-in blocks. The use of the two elastic springs both plays a fixing and rebounding role, so that the movable frame is fixed to the second long rod, thereby limiting the position of multiple non-woven materials to prevent them from falling, and pulling out the two plug-in blocks from the front side of the second long rod, so that the movable frame can move forward and break contact with multiple placement rollers, thereby realizing the removal of non-woven materials.

[0013] In order to make the movement effect of the two sliders and the two plug-in blocks better, preferably, the top and bottom sliding connections inside the two sliders are connected to limit rods, and the left and right sides of the two limit rods are respectively fixedly connected to the left and right sides of the inner wall of the cavity. Through the two limit rods, the two sliders and the two plug-in blocks can only move to the left or right, thereby limiting the movement range of the two sliders and the two plug-in blocks.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] The utility model is provided with structural components such as a driving device, a driver, a steel plate, a control end, a laminating device, a first unwinding roller and a second unwinding roller. The driving device can drive the laminating device to operate, the laminating device can press and form multiple layers of non-woven materials, the slitting device and the fixing device are used in coordination to cut the prepared materials to avoid slitting in a secondary process, more non-woven materials and rolled materials can be placed through the two storage racks, and the connection between the two plug-in blocks and the second long rod can prevent multiple non-woven materials from falling, thereby achieving the effect of being able to customize the laminated composite material at any time and increasing the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of a three-dimensional structure provided by an embodiment of the utility model;

[0017] Figure 2 It is a right-side stereoscopic structural diagram of a driving device and a laminating device provided by an embodiment of the utility model;

[0018] Figure 3 It is a three-dimensional structural diagram of a storage rack provided by an embodiment of the utility model;

[0019] Figure 4 The utility model embodiment provides Figure 3 Enlarged view of point A in the middle;

[0020] Figure 5 It is a three-dimensional structural diagram of a slitting device and a fixing device provided by an embodiment of the utility model;

[0021] Figure 6 It is a separated three-dimensional schematic diagram of a local structure provided by an embodiment of the utility model.

[0022] In the figure: 1, driving device; 1a, driver; 1b, steel plate; 1c, control end; 2, laminating device; 2a, first unwinding roller; 2b, second unwinding roller; 2c, third unwinding roller; 2d, heating roller; 2e, guide roller; 2g, winding device; 3, floor blowing pipe; 4, air expansion port; 5, dustproof net; 6, hole; 7, L-shaped block; 8, slitting device; 801, cutting knife; 802, protective shell; 803, fixing plate; 804, lifting column; 9. Fixing device; 901. Support plate; 902. Pressing block; 903. Square block; 904. Socket; 905. Screw; 906. Limiting column; 10. Storage rack; 1001. Connecting plate; 1002. Vertical column; 1003. Placement roller; 1004. Moving rack; 1005. First long rod; 1006. Second long rod; 11. Bump; 12. Cavity; 13. Slider; 14. Plug-in block; 15. Elastic spring; 16. Limiting rod. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0024] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0025] In addition, the terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0026] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0027] like Figures 1 to 6As shown, a laminated multi-layer composite nonwoven fabric production device provided by an embodiment of the utility model includes a driving device 1 and a laminating device 2, the driving device 1 includes a driver 1a, a steel plate 1b and a control end 1c, the left side of the steel plate 1b is fixedly connected to the right side of the driver 1a, the control end 1c is installed on the front side of the driver 1a, the laminating device 2 is installed on the right side of the driving device 1, the laminating device 2 includes a first unwinding roller 2a, a second unwinding roller 2b, a third unwinding roller 2c, a heating roller 2d, a plurality of guide rollers 2e and a winding device 2g, the first unwinding roller 2a, the second unwinding roller 2b, the third unwinding roller 2c, the heating roller 2d, the plurality of guide rollers 2e and the left side of the winding device 2g are all installed on the right side of the steel plate 1b, and the right side of the steel plate 1b The bottom is fixedly connected with a ground blowing pipe 3, the top of the ground blowing pipe 3 is fixedly connected with an air diffuser 4, and the top of the air diffuser 4 is fixedly connected with a dustproof net 5; the driving device 1 is used to drive the laminating device 2 to operate; the laminating device 2 is used to press and form multiple layers of non-woven materials. In order to be able to directly cut the prepared materials and to be able to place multiple non-woven materials, the air diffuser 4 is located at the bottom of the heating roller 2d, and the right side of the bottom of the air diffuser 4 is fixedly connected with an L-shaped block 7, and the left side of the L-shaped block 7 is fixedly connected to the bottom of the right side of the steel plate 1b. The left side of the ground blowing pipe 3 can be connected to the bottom of the right side of the driver 1a, and a slitting device 8 is provided on the rear side of the right side of the steel plate 1b. The bottom of the slitting device 8 is used in conjunction with a fixing device 9. The front and rear sides of the left side of the driver 1a Storage racks 10 are provided on both sides, and a plurality of holes 6 are provided on the front side of the right inner side of the steel plate 1b. The prepared material can be cut according to the need of winding through the slitting device 8, and the prepared material can be pressed through the fixing device 9. More non-woven materials can be placed through the two storage racks 10. The unwinding rollers can be increased or decreased according to the needs through the plurality of holes 6. In order to avoid the secondary process of slitting the prepared material, the slitting device 8 includes a cutting knife 801, a protective shell 802, a fixing plate 803 and two lifting columns 804. The surface of the cutting knife 801 is fixedly connected to the inside of the protective shell 802, the left side of the fixing plate 803 is fixedly connected to the right side of the steel plate 1b, and the bottoms of the two lifting columns 804 are respectively connected to the fixing plate 802 and the fixing plate 803. The left and right sides of the top of the fixed plate 803 are fixedly connected, and the output ends of the two lifting columns 804 at the bottom both penetrate the fixed plate 803 and are fixedly connected to the left and right sides of the top of the protective shell 802 respectively. Through the slitting device 8, after the winding device 2g has rolled up the required length as needed, the output ends of the two lifting columns 804 are used to make the protective shell 802 drive the cutting knife 801 to move downward, so that the cutting knife 801 cuts the prepared material. In order to facilitate the cutting knife 801 to cut the prepared material, the fixing device 9 includes a support plate 901, two pressing blocks 902, two square blocks 903, a socket 904, a screw 905 and two limiting columns 906. The left side of the support plate 901 is fixedly connected to the right side of the steel plate 1b.The bottoms of the two limiting posts 906 are respectively fixedly connected to the front and rear sides of the left side of the top of the support plate 901, and the left sides of the insides of the two clamping blocks 902 are slidably connected to the surfaces of the two limiting posts 906. The two square blocks 903 are respectively fixed to the left and right sides of the opposite ends of the two clamping blocks 902. The left side of the socket 904 is fixedly connected to the right side of the support plate 901, and the surface of the screw 905 is connected to the internal thread of the right square block 903. The bottom of the screw 905 is movably connected to the inside of the socket 904. Through the fixing device 9, the screw 905 is turned to make the right square block 903 drive the two clamping blocks 902 to move downward, so that the two clamping blocks 902 can compress the prepared materials, thereby making the cutting process more stable. To facilitate the preparation of multi-layer non-woven materials, the front storage rack 10 includes four connecting plates 1001, a column 1002, a plurality of placement rollers 1003, a movable frame 1004, two first long rods 1005 and a second long rod 1006, the right sides of the four connecting plates 1001 are fixedly connected to the left side of the driver 1a, the left sides of the four connecting plates 1001 are fixedly connected to the right side of the column 1002, the rear sides of the plurality of placement rollers 1003 are fixedly connected to the front sides of the four connecting plates 1001 and are evenly distributed, the front sides of the plurality of placement rollers 1003 are plug-connected to the inside of the movable frame 1004, the rear sides of the two first long rods 1005 are respectively fixedly connected to the top and bottom of the front side of the column 1002, the rear side of the second long rod 1006 is fixedly connected to the The center of the front side of the column 1002 is fixedly connected, and the front sides of the two first long rods 1005 and the second long rod 1006 are plug-connected with the left side of the inside of the mobile frame 1004. Through the storage rack 10, a plurality of different non-woven materials can be placed on the surface of the plurality of placement rollers 1003, so that the non-woven materials can be taken out when they are needed. In order to facilitate the removal of the non-woven materials and prevent the non-woven materials from falling from the placement rollers 1003, a protrusion 11 is fixedly connected to the left side of the front side of the mobile frame 1004, and a cavity 12 is opened inside the protrusion 11. Two sliders 13 are slidably connected inside the cavity 12. The tops of the two sliders 13 are fixedly connected with plug-in blocks 14. The opposite ends of the two plug-in blocks 14 are respectively plugged into the front side of the second long rod 1006. The left and right sides of the two sliders 13 are plugged in and connected, and the opposite ends of the two sliders 13 are fixedly connected with two elastic springs 15, which are plugged in and connected with the front side of the second long rod 1006 through the opposite ends of the two plug-in blocks 14. The use of the two elastic springs 15 plays a fixing and rebounding role, so that the movable frame 1004 is fixed to the second long rod 1006, so as to limit the position of multiple non-woven materials to prevent them from falling. The two plug-in blocks 14 are pulled out from the front side of the second long rod 1006, so that the movable frame 1004 can move forward and break away from the contact with the multiple placement rollers 1003, so as to take out the non-woven materials. In order to make the movement effect of the two sliders 13 and the two plug-in blocks 14 better, the top and bottom of the two sliders 13 are slidably connected with the limiting rod 16.The left and right sides of the two limit rods 16 are respectively fixedly connected to the left and right sides of the inner wall of the cavity 12. Through the two limit rods 16, the two sliders 13 and the two plug-in blocks 14 can only move to the left or right, which can limit the movement range of the two sliders 13 and the two plug-in blocks 14.

[0028] The working principle of this utility model:

[0029] When it is necessary to prepare a laminated composite material, a corresponding number of unwinding rollers can be installed according to the plurality of holes 6, and the two sliders 13 can be pushed to move in opposite directions by manpower, and the two plug-in blocks 14 can be moved in opposite directions, so that the two plug-in blocks 14 are moved out from the front side inside the second long rod 1006. At this time, the movable frame 1004 can be moved forward and disengaged from the plurality of placement rollers 1003. When preparation is required, the non-woven material can be taken out from the plurality of placement rollers 1003. Different unwinding rollers can be used to place different non-woven materials. When the two sliders 13 move in opposite directions, the two elastic springs 15 will be deformed. After the movable frame 1004 is plugged and connected with the second long rod 1006, Loosen the two sliders 13. Under the elastic action of the two sliders 13, the two sliders 13 will drive the two plug-in blocks 14 to rebound to the inside of the second long rod 1006, so that the second long rod 1006 is fixed to the movable frame 1004. When the prepared material needs to be cut, first stop the operation of the laminating device 2, turn the screw 905 to move downward and move the two clamping blocks 902 downward through the right square block 903, so that the two clamping blocks 902 press the prepared material, and run the two lifting columns 804 so that the output ends of the two lifting columns 804 drive the cutting knife 801 to move downward, so that the cutting knife 801 cuts the prepared material.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0031] The above description is only a preferred embodiment of the utility model, and does not constitute any form of limitation to the utility model. Although the utility model has been disclosed as a preferred embodiment as above, it is not used to limit the utility model. Any technician familiar with this patent will not depart from the scope of the technical solution of the utility model.

Claims

1. A laminated multi-layer composite nonwoven fabric production device, comprising a driving device (1) and a laminating device (2), characterized in that: The driving device (1) comprises a driver (1a), a steel plate (1b) and a control end (1c); the left side of the steel plate (1b) is fixedly connected to the right side of the driver (1a); the control end (1c) is installed on the front side of the driver (1a); the laminating device (2) is installed on the right side of the driving device (1); the laminating device (2) comprises a first unwinding roller (2a), a second unwinding roller (2b), a third unwinding roller (2c), a heating roller (2d), a plurality of guide rollers (2e) and a winding device (2g); The first unwinding roller (2a), the second unwinding roller (2b), the third unwinding roller (2c), the heating roller (2d), the plurality of guide rollers (2e) and the left side of the winding device (2g) are all installed on the right side of the steel plate (1b); the bottom of the right side of the steel plate (1b) is fixedly connected to a ground blowing pipe (3); the top of the ground blowing pipe (3) is fixedly connected to an air expansion port (4); the top of the air expansion port (4) is fixedly connected to a dustproof net (5); and the front side of the inner right side of the steel plate (1b) is provided with a plurality of holes (6); The driving device (1) is used to drive the laminating device (2) to operate; The laminating device (2) is used for pressing and molding multi-layer nonwoven materials.

2. A laminated multi-layer composite nonwoven fabric production device as claimed in claim 1, characterized in that: The air diffuser (4) is located at the bottom of the heating roller (2d), and an L-shaped block (7) is fixedly connected to the right side of the bottom of the air diffuser (4). The left side of the L-shaped block (7) is fixedly connected to the bottom of the right side of the steel plate (1b). The left side of the ground blowing pipe (3) can be connected to the bottom of the right side of the driver (1a). A slitting device (8) is arranged at the rear side of the right side of the steel plate (1b), and a fixing device (9) is used in conjunction with the bottom of the slitting device (8). Storage racks (10) are arranged on the front and rear sides of the left side of the driver (1a).

3. A laminated multi-layer composite nonwoven fabric production device as claimed in claim 2, characterized in that: The slitting device (8) comprises a cutting knife (801), a protective shell (802), a fixing plate (803) and two lifting columns (804); the surface of the cutting knife (801) is fixedly connected to the inside of the protective shell (802); the left side of the fixing plate (803) is fixedly connected to the right side of the steel plate (1b); the bottoms of the two lifting columns (804) are respectively fixedly connected to the left and right sides of the top of the fixing plate (803); the output ends of the bottoms of the two lifting columns (804) both pass through the fixing plate (803) and are respectively fixedly connected to the left and right sides of the top of the protective shell (802).

4. A laminated multi-layer composite nonwoven fabric production device as claimed in claim 2, characterized in that: The fixing device (9) comprises a support plate (901), two clamping blocks (902), two square blocks (903), a socket (904), a screw (905) and two limiting columns (906). The left side of the support plate (901) is fixedly connected to the right side of the steel plate (1b). The bottoms of the two limiting columns (906) are respectively fixedly connected to the front and rear sides of the left side of the top of the support plate (901). The left sides inside the two clamping blocks (902) are slidably connected to the surfaces of the two limiting columns (906). The two square blocks (903) are respectively fixed to the left and right sides of the opposite ends of the two clamping blocks (902). The left side of the socket (904) is fixedly connected to the right side of the support plate (901). The surface of the screw (905) is threadedly connected to the inside of the right square block (903). The bottom of the screw (905) is movably connected to the inside of the socket (904).

5. A laminated multi-layer composite nonwoven fabric production device as claimed in claim 2, characterized in that: The storage rack (10) on the front side comprises four connecting plates (1001), a column (1002), a plurality of placement rollers (1003), a movable frame (1004), two first long rods (1005) and a second long rod (1006); the right sides of the four connecting plates (1001) are fixedly connected to the left side of the driver (1a); the left sides of the four connecting plates (1001) are fixedly connected to the right side of the column (1002); the rear sides of the plurality of placement rollers (1003) are fixedly connected to the four connecting plates (1001); 01) are fixedly connected to the front side and evenly distributed, the front sides of the plurality of placement rollers (1003) are plug-connected to the inside of the mobile frame (1004), the rear sides of the two first long rods (1005) are respectively fixedly connected to the top and bottom of the front side of the column (1002), the rear side of the second long rod (1006) is fixedly connected to the center of the front side of the column (1002), and the front sides of the two first long rods (1005) and the second long rod (1006) are plug-connected to the left side inside the mobile frame (1004).

6. A laminated multi-layer composite nonwoven fabric production device as claimed in claim 5, characterized in that: A protrusion (11) is fixedly connected to the left side of the front side of the movable frame (1004), a cavity (12) is provided inside the protrusion (11), two sliders (13) are slidably connected inside the cavity (12), the tops of the two sliders (13) are fixedly connected to plug-in blocks (14), the opposite ends of the two plug-in blocks (14) are respectively plug-connected to the left and right sides of the front side of the inside of the second long rod (1006), and the opposite ends of the two sliders (13) are fixedly connected to two elastic springs (15).

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