Automatic sewing production equipment for textile cotton sheets

Abstract

The present invention belongs to the technical field of sewing equipment, and specifically is an automatic sewing production equipment for textile cotton sheets, including a machine base, a sewing assembly and a loading assembly; a mounting groove is provided on the upper side of the machine base; the loading assembly includes a loading platform; a movable seat is slidably connected inside the mounting groove; a rotating shaft is rotatably connected to the surface of the movable seat; a screw rod 2 is rotatably connected inside the mounting groove; and a group of guide rods are fixedly connected inside the mounting groove. The screw rod 2 is controlled to rotate by the motor 2 to drive the movable seat and the loading platform to move toward the slide seat, and then the top plate is controlled to descend by the electric telescopic rod, and then the motor 1 controls the screw rod 1 to rotate, driving the slide seat to move horizontally, and the side edges of the nursing pad are sewed and sealed by the sewing machine head, and then the movable seat and the loading platform are controlled to move away from the slide seat by the motor 2, and then the loading platform is controlled to rotate 90 degrees by the driving device, and then the above steps are repeated to complete the sewing and sealing of the four sides of the nursing pad in sequence.

Description

Technical Field

[0001] The invention belongs to the technical field of sewing equipment, in particular to an automatic sewing production equipment for woven cotton sheets. Background Art

[0002] Nursing pads are disposable sanitary products, mainly used for people who cannot take care of themselves, such as surgical patients or paralyzed patients. Nursing pads usually have a three-layer structure, that is, a layer of cotton sheet is sandwiched between two layers of textile fabric. Its production process includes material selection, cutting, superimposition and bonding, sewing, packaging, etc. After superimposing and bonding the two layers of textile fabric and the layer of cotton sheet, sewing equipment is needed to sew and seal the four sides of the nursing pad.

[0003] A Chinese patent application CN218026630U discloses a hemming machine for processing nursing mattresses, and the key points of its technical solution are: it includes a support table, a loading platform is provided above the support table, a fixed shaft is fixedly connected to the bottom of the loading platform, the fixed shaft passes through the support table, a first bearing is provided at the penetration of the fixed shaft and the support table, the loading platform and the support table are connected by a rotating support unit, a rotating unit matching the fixed shaft is provided at the bottom of the support table, a fixed seat is provided at the top of the support table, and the fixed seat and the support table are connected by a driving assembly; the height of the sewing machine head can be changed, and the position of the sewing machine head can be adjusted conveniently, the sewing machine head can be moved horizontally, and one side of the mattress can be hemmed by the sewing machine head, which is convenient to change the position of the mattress, and then the position of the mattress that needs to be hemmed can be rotated to the bottom of the sewing machine head.

[0004] However, the above technology often has the following defects: when in use, it is necessary to manually change the position of the first slider in the first slide groove to adjust the front and rear positions of the top plate and the sewing machine head, and then fix the top plate through the threaded sleeve, and when the nursing pad is square, since its two side lengths are different, when the stage is rotated, the front and rear positions of the top plate and the sewing machine head need to be adjusted again, and the operation process is relatively cumbersome and the degree of automation is low.

[0005] To this end, the present invention provides an automatic sewing production device for a woven cotton-filled sheet. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve the technical problem is: the automatic sewing production equipment of textile cotton sheets described in the present invention comprises a machine base, a sewing component and a loading component; the upper side of the machine base is provided with a mounting groove;

[0008] The sewing assembly comprises a pair of side plates fixedly connected to the upper side of the machine base; a screw rod 1 is rotatably connected between the side plates, and the screw rod 1 is driven by a motor 1; a slide seat is slidably connected to the upper side of the machine base; the screw rod 1 penetrates the slide seat and is connected to the slide seat through a screw nut pair; an electric telescopic rod is fixedly connected to the surface of the slide seat; the output end of the electric telescopic rod is fixedly connected to a top plate; and a sewing machine head is fixedly connected to the lower side of the top plate;

[0009] The loading assembly includes a loading platform arranged above the mounting groove; the surface of the loading platform is used for placing a nursing pad; a movable seat is slidably connected inside the mounting groove; a rotating shaft is rotatably connected to the surface of the movable seat, and the rotating shaft is fixedly connected to the loading platform; a driving device for controlling the rotation of the rotating shaft is arranged inside the movable seat; a second screw is rotatably connected inside the mounting groove, and the second screw is driven by a second motor; the second screw penetrates the movable seat and is connected to it through a screw nut pair; a group of guide rods are fixedly connected inside the mounting groove, and the guide rods penetrate the movable seat and are slidably connected to it.

[0010] Preferably, the four sides of the stage are fixedly connected with sensing blocks; the surface of the base between the slide and the mounting slot is fixedly connected with a baffle; and the side of the baffle close to the mounting slot is fixedly connected with a sensor.

[0011] Preferably, a group of ball grooves are evenly distributed on the surface of the base at positions around the mounting groove; steel balls are arranged inside the ball grooves, and the steel balls protrude from the surface of the base and fit against the lower side of the stage.

[0012] Preferably, a surrounding frame matching the shape of the nursing pad is fixedly connected to the upper edge of the loading platform.

[0013] Preferably, fixing components are provided on all four sides of the loading platform; the fixing components include a support block; a vertical cylinder is fixedly connected to the surface of the support block; a vertical rod is slidably connected inside the vertical cylinder; a pressure plate is fixedly connected to the upper end of the vertical rod; a spring is fixedly connected between the pressure plate and the vertical cylinder; a pressure block is fixedly connected to the lower side of one end of the pressure plate extending above the loading platform; a guide block is fixedly connected to the upper side of the pressure plate; an electromagnet for attracting the guide block is provided inside the support block.

[0014] Preferably, slide grooves are provided on the four sides of the loading platform, and the support blocks are slidably connected to the inside of the slide grooves; a motor is fixedly connected to the inside of the slide groove; a screw rod three is connected to the output shaft of the motor; the screw rod three is inserted into the inside of the support block and connected to it through a screw nut pair.

[0015] Preferably, the pressing block is made of elastic material.

[0016] Preferably, a piston is slidably and sealably connected inside the vertical tube, and the lower end of the vertical rod is fixedly connected to the piston; an air hole is opened inside the surrounding frame at a corresponding position of the vertical tube; and the top of the vertical tube is connected to the air hole through a conduit.

[0017] Preferably, the diameter of one end of the air hole away from the vertical cylinder gradually expands, and a conical block is fixedly connected to the inside of the end; a group of capillary holes are evenly distributed inside the conical block.

[0018] Preferably, a support plate is fixedly connected inside the slide groove; an elastic air storage part is fixedly connected to the side of the support plate close to the support block; a groove is opened on the upper side of the loading platform at the corresponding position of the conical block; an elastic pad is fixedly connected inside the groove; an elastic part is fixedly connected between the elastic pad and the groove; and a closed cavity formed between the elastic pad and the groove is connected to the air storage part through conduit two.

[0019] The beneficial effects of the present invention are as follows:

[0020] 1. The automatic sewing production equipment for textile quilted sheets described in the present invention first places the nursing pad on the surface of the loading platform, and controls the rotation of screw rod 2 by motor 2 to drive the movable seat and the loading platform to move toward the sliding seat, so that the side edge of the nursing pad is just located below the sewing machine head, and then controls the top plate to descend by the electric telescopic rod, so that the presser foot of the sewing machine head fits the side surface of the nursing pad, and then controls the rotation of screw rod 1 by motor 1 to drive the sliding seat to move horizontally, and sews and seals the side edge of the nursing pad by the sewing machine head, and then controls the movable seat and the loading platform to move away from the sliding seat by motor 2, and then controls the loading platform to rotate 90 degrees by the driving device, and then repeats the above steps to complete the sewing and sealing of the four sides of the nursing pad in turn.

[0021] 2. The automatic sewing production equipment for textile quilted sheets described in the present invention, after placing the nursing pad on the surface of the loading platform, energizes the electromagnet inside the support block, and then the electromagnet attracts the guide block and drives the pressure plate to move downward, and utilizes the pressure block to press the nursing pad to the surface of the loading platform, thereby improving the fixing effect of the nursing pad, and then during the movement of the loading platform and the sewing process, the position of the nursing pad can be prevented from being shifted, thereby further improving the sewing accuracy of the equipment and ensuring the production quality of the nursing pad. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below in conjunction with the accompanying drawings.

[0023] Figure 1 is a stereogram of the present invention;

[0024] Figure 2 yes Figure 1 A partial enlarged view of the middle part;

[0025] Figure 3It is a structural schematic diagram of the installation slot in the present invention;

[0026] Figure 4 yes Figure 3 A partial enlarged view of point B in the middle;

[0027] Figure 5 is a partial cross-sectional view of the stage of the present invention;

[0028] Figure 6 yes Figure 5 A partial enlarged view of point C in the middle.

[0029] In the figure: base 1, mounting groove 2, side plate 3, screw 1 4, motor 1 5, slide 6, electric telescopic rod 7, top plate 8, sewing machine head 9, loading platform 10, nursing pad 11, movable seat 12, rotating shaft 13, screw 2 14, motor 2 15, guide rod 16, induction block 17, baffle 18, sensor 19, steel ball 20, frame 21, support block 22, vertical cylinder 23, vertical rod 24, pressure plate 25, spring 26, pressure block 27, guide block 28, slide groove 29, motor 30, screw 3 31, piston 32, air hole 33, conduit 1 34, conical block 35, capillary 36, support plate 37, air storage member 38, groove 39, elastic pad 40, elastic member 41, conduit 2 42. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0031] like Figures 1 to 6 As shown, the automatic sewing production equipment for textile cotton sheets of the present invention comprises a machine base 1, a sewing assembly and a loading assembly; a mounting groove 2 is provided on the upper side of the machine base 1;

[0032] The sewing assembly includes a pair of side plates 3 fixedly connected to the upper side of the machine base 1; a screw rod 4 is rotatably connected between the side plates 3, and the screw rod 4 is driven by a motor 5; a slide seat 6 is slidably connected to the upper side of the machine base 1; the screw rod 4 penetrates the slide seat 6 and is connected to it through a screw rod and nut pair; an electric telescopic rod 7 is fixedly connected to the surface of the slide seat 6; the output end of the electric telescopic rod 7 is fixedly connected to a top plate 8; the lower side of the top plate 8 is fixedly connected to a sewing machine head 9;

[0033] The loading assembly includes a loading platform 10 arranged above the mounting groove 2; the surface of the loading platform 10 is used for placing a nursing pad 11; a movable seat 12 is slidably connected inside the mounting groove 2; a rotating shaft 13 is rotatably connected to the surface of the movable seat 12, and the rotating shaft 13 is fixedly connected to the loading platform 10; a driving device for controlling the rotation of the rotating shaft 13 is arranged inside the movable seat 12; a screw rod 14 is rotatably connected inside the mounting groove 2, and the screw rod 14 is driven by a motor 15; the screw rod 14 passes through the movable seat 12 and is connected to it through a screw nut pair; a group of guide rods 16 are fixedly connected inside the mounting groove 2, and the guide rods 16 pass through the movable seat 12 and are slidably connected to it.

[0034] When the nursing pad 11 sewing device in the prior art is in use, it is necessary to manually change the position of the first slider in the first slide groove 29 to adjust the front and rear positions of the top plate 8 and the sewing head 9, and then fix the top plate 8 through the threaded sleeve. When the nursing pad 11 is square, since its two side lengths are different, when the stage 10 is rotated, the front and rear positions of the top plate 8 and the sewing head 9 need to be adjusted again. The operation process is relatively cumbersome and the degree of automation is low.

[0035] When the present invention is in use, the nursing pad 11 composed of the three-layer structure of woven fabric-cotton sheet-woven fabric is first placed on the surface of the loading platform 10, and the motor 2 15 controls the screw 2 14 to rotate, driving the movable seat 12 and the loading platform 10 to move toward the slide 6, so that the side of the nursing pad 11 is just located below the sewing machine head 9, and then the electric telescopic rod 7 controls the top plate 8 to descend, so that the presser foot of the sewing machine head 9 fits the side surface of the nursing pad 11, and then the motor 15 controls the screw 14 to rotate, driving the slide 6 to move horizontally, and the side of the nursing pad 11 is sewed and sealed by the sewing machine head 9, and then the motor 2 15 controls the movable seat 12 and the loading platform 10 to move away from the slide 6, and then the driving device controls the loading platform 10 to rotate 90 degrees, and then repeats the above steps to complete the sewing and sealing of the four sides of the nursing pad 11 in sequence.

[0036] The present invention can realize full-process automated control and simplify the sewing process. There is no need to manually adjust the front and rear positions of the sewing machine head 9. Moreover, when the nursing pad 11 is a square with different side lengths, the device can also automatically sew. Specifically, when it is necessary to sew the short side of the nursing pad 11, the motor 2 15 is used to control the stage 10 to move a shorter distance toward the slide 6. When it is necessary to sew the long side of the nursing pad 11, the motor 2 15 is used to control the stage 10 to move a longer distance toward the slide 6.

[0037] The four sides of the loading platform 10 are fixedly connected with sensing blocks 17; the surface of the base 1 between the slide 6 and the mounting groove 2 is fixedly connected with a baffle 18; the side of the baffle 18 close to the mounting groove 2 is fixedly connected with a sensor 19, and the sensor 19 can be a pressure sensor, an infrared rangefinder, or an ultrasonic rangefinder; by setting the sensor 19, the motor 2 15 controls the movement of the loading platform 10 toward the slide 6. When the sensing block 17 moves to the sensor 19, the motor 2 15 automatically stops running. At this time, the side of the nursing pad 11 just moves to the bottom of the sewing machine head 9, further improving the degree of automation of the equipment.

[0038] As a preferred embodiment of the present invention, a group of ball grooves are evenly distributed on the surface of the base 1 around the mounting groove 2; steel balls 20 are arranged inside the ball grooves, and the steel balls 20 protrude from the surface of the base 1 and fit against the lower side of the stage 10; by arranging a plurality of steel balls 20 to support the stage 10, the steel balls 20 can roll on the lower side of the stage 10 during the rotation or translation of the stage 10, thereby reducing the movement resistance of the stage 10 and ensuring the stable operation of the device.

[0039] As a preferred embodiment of the present invention, a frame 21 that matches the shape of the nursing pad 11 is fixedly connected to the upper edge of the loading platform 10; by providing the frame 21 that protrudes from the surface of the loading platform 10, a positioning function can be achieved, and when placing the nursing pad 11, it can be placed inside the frame 21, thereby improving the sewing accuracy of the nursing pad 11.

[0040] As a preferred embodiment of the present invention, the four sides of the stage 10 are provided with fixing components; the fixing components include a support block 22; a vertical cylinder 23 is fixedly connected to the surface of the support block 22; a vertical rod 24 is slidably connected inside the vertical cylinder 23; a pressure plate 25 is fixedly connected to the upper end of the vertical rod 24; a spring 26 is fixedly connected between the pressure plate 25 and the vertical cylinder 23; a pressure block 27 is fixedly connected to the lower side of one end of the pressure plate 25 extending above the stage 10; a guide block 28 is fixedly connected to the upper side of the pressure plate 25; An electromagnet for attracting the guide block 28 is provided inside the block 22; after the nursing pad 11 is placed on the surface of the stage 10, the electromagnet inside the support block 22 is energized, and then the electromagnet attracts the guide block 28 and drives the pressure plate 25 to move downward, and the pressure block 27 is used to press the nursing pad 11 against the surface of the stage 10, thereby improving the fixing effect of the nursing pad 11, and thus preventing the position of the nursing pad 11 from shifting during the movement of the stage 10 and the sewing process, further improving the sewing accuracy of the equipment, and ensuring the production quality of the nursing pad 11.

[0041] As a preferred embodiment of the present invention, slide grooves 29 are provided on the four sides of the loading platform 10, and the support blocks 22 are slidably connected to the inside of the slide grooves 29 respectively; a motor 30 is fixedly connected to the inside of the slide grooves 29; a screw three 31 is connected to the output shaft of the motor 30; the screw three 31 is inserted into the support block 22 and connected thereto through a screw nut pair; after the pressing plate 25 moves downward and presses the nursing pad 11, the motor 30 controls the rotation of the screw three 31 to drive the support block 22 to slide outward in the slide groove 29, so that the pressing block 27 rubs and slides on the surface of the nursing pad 11, thereby utilizing the multiple pressing blocks 27 on the four sides of the loading platform 10 to pull the nursing pad 11 outward and flatten it to prevent wrinkles on its surface from affecting the sewing work.

[0042] The pressing block 27 is made of elastic material, such as rubber, silicone, etc., to prevent the pressing block 27 from being worn when sliding on the surface of the nursing pad 11 and to alleviate the squeezing of the nursing pad 11 by the pressing block 27.

[0043] As a preferred embodiment of the present invention, a piston 32 is slidably and sealedly connected inside the vertical tube 23, and the lower end of the vertical rod 24 is fixedly connected to the piston 32; an air hole 33 is opened inside the surrounding frame 21 at a corresponding position of the vertical tube 23; the top of the vertical tube 23 is connected to the air hole 33 through a conduit 1 34; in the process of the pressing block 27 pressing the nursing pad 11, the nursing pad 11 is easily squeezed and compacted, resulting in the contraction of the porous structure inside it, thereby reducing its water absorption efficiency during use; when the sewing work is completed, the electromagnet is powered off, and then the spring 26 pushes the pressing plate 25 to reset upward, and the pressing block 27 is separated from the nursing pad 11. At this time, the vertical rod 24 drives the piston 32 to move upward inside the vertical tube 23, and squeezes the air at the top of the vertical tube 23 into the side of the nursing pad 11 through the conduit 1 34 and the air hole 33, which is conducive to promoting the part of the nursing pad 11 squeezed by the pressing block 27 to become fluffy again, and promoting the expansion and recovery of its porous structure, thereby improving the water absorption efficiency of the nursing pad 11 during subsequent use.

[0044] The diameter of one end of the air hole 33 away from the vertical cylinder 23 gradually increases, and a conical block 35 is fixedly connected to the inside of the end; a group of capillary holes 36 are evenly distributed inside the conical block 35; when air flows through the air hole 33, it can enter the multiple capillary holes 36 of the conical block 35, thereby dispersing the airflow and spraying it to the inside of the side of the nursing pad 11 through multiple paths at the same time, so that the porous structure of the nursing pad 11 can expand more evenly, further improving the fluffiness of the nursing pad 11.

[0045] As a preferred embodiment of the present invention, a support plate 37 is fixedly connected inside the slide groove 29; an elastic gas storage member 38 is fixedly connected to the side of the support plate 37 close to the support block 22; a groove 39 is opened on the upper side of the worktable 10 at the corresponding position of the conical block 35; an elastic pad 40 is fixedly connected inside the groove 39; an elastic member 41 is fixedly connected between the elastic pad 40 and the groove 39; the closed cavity formed between the elastic pad 40 and the groove 39 is connected to the gas storage member 38 through a conduit 42; when the sewing work is completed, the electromagnet is first powered off to cause the pressing plate to 25 is reset upward, the pressing block 27 is separated from the nursing pad 11, and then the motor 30 controls the rotation of the screw rod 31 to drive the support block 22 to slide into the inside of the slide groove 29, so that the entire fixed assembly is reset to the initial state, and the support block 22 can squeeze the gas storage member 38 when moving toward the support plate 37, and squeeze the gas inside the gas storage member 38 into the space between the elastic pad 40 and the groove 39 through the conduit 242, so that the elastic pad 40 expands and bulges upward, thereby pushing up the side of the nursing pad 11, so that it protrudes from the surface of the frame 21, so as to facilitate taking the nursing pad 11 and removing it from the surface of the loading platform 10.

[0046] The above-mentioned front, back, left, right, top and bottom are all based on the figures in the specification. Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0047] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present invention.

[0048] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An automatic sewing production equipment for woven cotton sheets, characterized by: It comprises a machine base (1), a sewing component and a loading component; a mounting groove (2) is provided on the upper side of the machine base (1); The sewing assembly comprises a pair of side plates (3) fixedly connected to the upper side of the machine base (1); a screw rod (4) is rotatably connected between the side plates (3), and the screw rod (4) is driven by a motor (5); a slide seat (6) is slidably connected to the upper side of the machine base (1); the screw rod (4) passes through the slide seat (6) and is connected to the slide seat (6) via a screw nut pair; an electric telescopic rod (7) is fixedly connected to the surface of the slide seat (6); the output end of the electric telescopic rod (7) is fixedly connected to a top plate (8); and a sewing machine head (9) is fixedly connected to the lower side of the top plate (8); The object-carrying assembly comprises a loading platform (10) arranged above the mounting groove (2); the surface of the loading platform (10) is used for placing a nursing pad (11); a movable seat (12) is slidably connected inside the mounting groove (2); a rotating shaft (13) is rotatably connected to the surface of the movable seat (12), and the rotating shaft (13) is fixedly connected to the loading platform (10); a driving device for controlling the rotation of the rotating shaft (13) is arranged inside the movable seat (12); a second screw rod (14) is rotatably connected inside the mounting groove (2), and the second screw rod (14) is driven by a second motor (15); the second screw rod (14) passes through the movable seat (12) and is connected to the movable seat (12) through a screw nut pair; a group of guide rods (16) are fixedly connected inside the mounting groove (2), and the guide rods (16) pass through the movable seat (12) and are slidably connected to the movable seat; The four sides of the loading platform (10) are all fixedly connected with sensing blocks (17); the surface of the base (1) between the slide seat (6) and the mounting groove (2) is fixedly connected with a baffle (18); the side of the baffle (18) close to the mounting groove (2) is fixedly connected with a sensor (19); The surface of the machine base (1) is evenly distributed with a group of ball grooves at positions around the mounting groove (2); steel balls (20) are arranged inside the ball grooves, and the steel balls (20) protrude from the surface of the machine base (1) and fit against the lower side of the loading platform (10); A surrounding frame (21) having a shape matching that of the nursing pad (11) is fixedly connected to the upper edge of the loading platform (10); The four sides of the loading platform (10) are all provided with fixing components; the fixing components include a support block (22); a vertical cylinder (23) is fixedly connected to the surface of the support block (22); a vertical rod (24) is slidably connected inside the vertical cylinder (23); a pressure plate (25) is fixedly connected to the upper end of the vertical rod (24); a spring (26) is fixedly connected between the pressure plate (25) and the vertical cylinder (23); a pressure block (27) is fixedly connected to the lower side of one end of the pressure plate (25) extending above the loading platform (10); a guide block (28) is fixedly connected to the upper side of the pressure plate (25); an electromagnet for attracting the guide block (28) is provided inside the support block (22); The four sides of the loading platform (10) are provided with slide grooves (29), and the support blocks (22) are slidably connected to the inside of the slide grooves (29); a motor (30) is fixedly connected to the inside of the slide groove (29); a screw rod (31) is connected to the output shaft of the motor (30); the screw rod (31) is inserted into the inside of the support block (22) and connected to the support block (22) through a screw nut pair; The pressing block (27) is made of elastic material; The interior of the vertical cylinder (23) is slidably and sealingly connected to a piston (32), and the lower end of the vertical rod (24) is fixedly connected to the piston (32); an air hole (33) is provided inside the enclosure (21) at a position corresponding to the vertical cylinder (23); the top of the vertical cylinder (23) is connected to the air hole (33) via a conduit (34); The diameter of one end of the air hole (33) away from the vertical cylinder (23) gradually increases, and a conical block (35) is fixedly connected to the inside of the end; a group of capillary holes (36) are evenly distributed inside the conical block (35); A support plate (37) is fixedly connected inside the slide groove (29); a side of the support plate (37) close to the support block (22) is fixedly connected to an elastic gas storage member (38); a groove (39) is provided on the upper side of the loading platform (10) at a position corresponding to the conical block (35); an elastic pad (40) is fixedly connected inside the groove (39); an elastic member (41) is fixedly connected between the elastic pad (40) and the groove (39); and a closed cavity formed between the elastic pad (40) and the groove (39) is connected to the gas storage member (38) via a second conduit (42).

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