3*3 gauze swab with selvedges and production device and method of 3*3 gauze swab

Abstract

The invention discloses a 3 * 3 gauze swab with selvedges and a production device and method of the 3 * 3 gauze swab, and belongs to the technical field of medical dressing production. One wide edge of the gauze pad is a woven edge; the gauze is firstly folded inwards for three times in the width direction and then folded inwards for three times in the length direction, and selvedges are located at the top end. The device comprises an unwinding structure, a roller type folding structure, a winding structure, a bisection structure and an insertion plate type folding structure, wherein the roller type folding structure is used for transverse slitting and inner three-folding; the unwinding structure, the bisection structure, the roller type folding structure and the insertion plate type folding structure are sequentially arranged from front to back, and the bisection structure is used for bisecting gauze; the winding structure is used for winding half of the gauze obtained after bisection, and the inserting plate type folding structure is used for folding the other half of the gauze; the inserting plate type folding structure comprises a workbench, a negative pressure transfer roller, a transverse fixing plate, a [-shaped plate, a longitudinal plate, a transverse folding plate, a longitudinal folding plate, a pressing mechanism, a pulling arm, a driving structure, a discharging groove and a check block.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of medical dressing production, and particularly relates to a 3x3 gauze sheet with a woven edge and a production device and method thereof. BACKGROUND

[0002] Medical gauze sheets are common medical devices made of pure cotton gauze. The product is usually square or rectangular, has the characteristics of lightness, air permeability and strong water absorption, etc. Medical gauze sheets are widely used in the medical industry and play an important role in wound treatment, surgical suturing, wound dressing, etc. The applicant designs a new 3x3 gauze sheet with a woven edge and provides an automatic production device and method for the gauze sheet. SUMMARY

[0003] In order to solve the foregoing problems, the embodiments of the present application provide a 3x3 gauze sheet with a woven edge and a production device and method thereof, and the production device is improved on the basis of the common roller type three-fold equipment. The technical solution is as follows: On the one hand, the embodiments of the present application provide a 3x3 gauze sheet with a woven edge, which is rectangular when unfolded; one wide edge of the gauze sheet is a woven edge 25; the gauze is first folded inward in the width direction, and then folded inward in the length direction with the woven edge 25 at the top end.

[0004] On the other hand, the embodiments of the present application also provide a production device for a 3x3 gauze sheet with a woven edge, which includes a rack and a unwinding structure and a roller type folding structure thereon, the roller type folding structure is used for transverse slitting and inner three-fold; it also includes a winding structure, a cutting structure and a plug-in plate type folding structure; the unwinding structure, the cutting structure, the roller type folding structure and the plug-in plate type folding structure are sequentially arranged from front to back, the cutting structure is used for cutting the gauze; the winding structure is located below the cutting structure and is used for winding the half gauze after cutting, the plug-in plate type folding structure is used for folding the other half gauze; the plug-in plate type folding structure includes a workbench 4, a negative pressure transfer roller 5, a horizontal fixing plate 6, an L-shaped plate 7, a vertical plate 8, a horizontal folding plate 9, a vertical folding plate 10, a pressing mechanism 11, a pulling arm 12, a driving structure, a discharge chute 26 and a stop block 13; the negative pressure transfer roller 5 transfers the inner three-fold gauze 1 folded by the roller type folding structure backward and adjusts it to be vertical; the vertical folding plate 10 folds the gauze once and adjusts it to be front-to-back, the horizontal folding plate 9 folds the gauze twice and adjusts it to be left-to-right, the pulling arm 12 outputs the folded gauze to the discharge chute 26 backward and stacks it front-to-back.

[0005] The workbench 4 is horizontally arranged along the front-rear direction; the driving mechanism is arranged on the lower side of the workbench 4 and moves forward and backward; the negative pressure transfer roller 5 is arranged along the left-right direction, is located at the rear side of the roller type folding structure, rotates backward, is located above the front part of the workbench 4, and is uniformly provided with a plurality of negative pressure arms on the circumferential surface; the negative pressure arms are arranged along the radial direction of the negative pressure transfer roller 5 and can adsorb the inner three-folded gauze 1; the negative pressure arms are provided with folding openings 14 for the longitudinal folding plate 10 to insert at the one-third position of the inner three-folded gauze 1; the folding openings 14 are arranged along the front-rear direction; the inner three-folded gauze 1 on the rear negative pressure arm is vertically arranged, at this time, the longitudinal folding plate 10 is located in the folding opening 14 and is located in front of the inner three-folded gauze 1; the longitudinal folding plate 10 pushes the inner three-folded gauze 1 backward to the between the U-shaped plate 7 and the longitudinal plate 8 to realize first folding, and the first folded gauze 2 along the front-rear direction is obtained; the transverse fixed plate 6 is arranged along the left-right direction, is located adjacent to the rear side of the negative pressure transfer roller 5, and is arranged on the upper side of the workbench 4; the U-shaped plate 7 is open to the right, is located above the workbench 4, includes a vertical arm and two transverse arms, the front part is fixed on the rear side of the transverse fixed plate 6, and the rear part is fixed on the workbench 4; the two transverse arms are flush with the upper and lower ends of the first folded gauze 2 respectively; the longitudinal plate 8 is arranged along the front-rear direction, is arranged on the workbench 4, the front end is fixed on the rear side of the transverse fixed plate 6, is located on the left side of the vertical arm, and has a gap for the longitudinal folding plate 10 to pass through between the vertical arm; the transverse fixed plate 6 is provided with a vertical strip-shaped hole for the longitudinal folding plate 10 to pass through on the left side of the vertical arm; the workbench 4 is provided with a left strip-shaped hole 16 for the longitudinal folding plate 10 to pass through and move forward and backward on the left side of the vertical arm; the left strip-shaped hole 16 is arranged along the front-rear direction; the longitudinal folding plate 10 is vertically arranged, the lower end is arranged on the driving mechanism, and the longitudinal folding plate 10 can move backward to the rear part of the vertical arm; the transverse folding plate 9 is located on the left side of the front part of the longitudinal plate 8, is arranged along the left-right direction, can move leftward and rightward, is arranged opposite to the midpoint of the first folded gauze 2, is used for second folding and reversing of the first folded gauze 2; the U-shaped plate 7 and the longitudinal plate 8 are provided with a transverse strip-shaped hole 22 for the transverse folding plate 9 to pass through; the transverse strip-shaped hole 22 is arranged along the left-right direction; the pressing mechanism 11 is located behind the transverse folding plate 9, is located on the left side of the U-shaped plate 7, can move leftward and rightward, and is used for pressing the rear end of the first folded gauze 2 on the U-shaped plate 7; the longitudinal plate 8 is provided with a notch for the pressing mechanism 11 to pass through; the pulling arm 12 is arranged along the left-right direction, is located in front of the transverse folding plate 9, is located behind the transverse fixed plate 6, can move forward and backward, is used for pushing the second folded gauze 3 backward to the discharge chute 26, the right end is connected with the driving mechanism through a connecting part, and the left part is located between the two transverse arms; the workbench 4 is provided with a right strip-shaped hole 15 for the connecting part to pass through and move forward and backward;The discharge slot 26 is arranged along the front-rear direction, is arranged at the rear side of the Z-shaped plate 7, the slot bottom is flush with the lower transverse arm, the two slot edges are respectively arranged at the adjacent outer sides of the left and right sides of the twice folded gauze 3, the front end of the right slot edge is provided with a position avoiding window matched with the pulling arm 12; the stop block 13 is abutted against the rear side of the twice folded gauze 3 after front-rear stacking, is arranged at the rear part in the discharge slot 26, and can slide front-rear in the discharge slot 26.

[0006] In the embodiment of the present application, the driving mechanism comprises two slide rods arranged side by side on the lower side of the workbench 4, a slide seat slidably arranged on the two slide rods, a connecting rod 18 arranged along the front-rear direction, and a driving wheel 17 arranged along the left-right direction. The slide rods are arranged along the front-rear direction. The longitudinal folding plate 10 and the connecting part are arranged on the slide seat, and the longitudinal folding plate 10 is located in front of the left side of the connecting part. The device further comprises a power structure. The front end of the connecting rod 18 is eccentrically connected to the right side of the driving wheel 17, and the rear end is hingedly connected to the slide seat. The rotation of the driving wheel 17 drives the slide seat to move front-rear. The power structure is used to synchronously drive the roller folding structure, the transverse folding plate 9, the negative pressure transfer roller 5, and the driving wheel 17. The driving wheel 17 is in transmission connection with the power structure. The left side of the driving wheel 17 is provided with a concave-convex guide rail, which is located below the workbench 4. The workbench 4 is provided with a fixed frame 19 on the left side of the longitudinal plate 8. The front side of the fixed frame 19 is provided with a slide rail along the left-right direction. The rear side of the pressing mechanism 11 is slidably arranged on the slide rail. The lower side of the pressing mechanism 11 is vertically guided. The left side of the pressing mechanism 11 and the workbench 4 are provided with a spring 20 for pushing the pressing mechanism 11 to the right. The spring 20 is arranged along the left-right direction. The workbench 4 is provided with a window 21 above the driving wheel 17, through which the guide wheel passes and moves left-right. The guide wheel is in sliding connection with the concave-convex guide rail, so that the driving wheel 17 rotates one round, and the pressing mechanism 11 moves left-right once.

[0007] Preferably, the transverse strip-shaped hole 22 in the embodiment of the present application is arranged close to the transverse fixed plate 6. The rear side of the transverse fixed plate 6 is provided with a groove capable of accommodating the pulling arm 12. The groove is arranged along the left-right direction. The two sides of the right part of the transverse strip-shaped hole 22 on the transverse arm are provided with a plurality of teeth arranged side by side left and right, and the two sides of the left part are provided with anti-static adhesive tape.

[0008] Specifically, the number of negative pressure arms in the embodiment of the present application is three, and the included angle between the two adjacent negative pressure arms is 120°. A plurality of grooves are arranged side by side left and right on each negative pressure arm, and the negative pressure holes are arranged between the grooves.

[0009] Preferably, the pulling arm 12 in the embodiment of the present application comprises two pulling rods arranged side by side in up-down direction, which are located at the upper and lower parts of the secondary folded gauze 3 respectively, the pulling rods are arranged in left-right direction and the rear side of the pulling rods is provided with an anti-static tape; the front end of the avoiding position window and the right groove side of the discharge groove 26 is provided with a guide piece 23; the guide piece 23 is located between the two pulling rods and is bent obliquely to the right from back to front; the rear end of the two transverse arms is provided with a soft baffle 24, the upper soft baffle 24 is located adjacent to the lower end of the secondary folded gauze 3, and the lower soft baffle 24 is located adjacent to the upper end of the secondary folded gauze 3; the transverse fixed plate 6 and the corresponding folding opening 14 are provided with a photoelectric sensor, which counts the gauze; the bottom of the front part of the discharge groove 26 is provided with a top block capable of moving up and down, when the secondary folded gauze 3 in the discharge groove 26 and located behind the top block reaches a predetermined number, the top block is lifted to make the corresponding secondary folded gauze 3 protrude upward.

[0010] In another aspect, the embodiment of the present application also provides a method for producing gauze by using the above production device, the method comprising: cutting the gauze with both sides being selvedge by using a cutting structure; winding one half of the gauze after cutting, and folding the other half of the gauze in the width direction first, and then folding in the length direction; after the processing of the other half of the gauze is completed; winding one half of the gauze in the same processing equipment in turn in the width direction and in the length direction, at this time, one half of the gauze and the other half of the gauze are located on the same side of the cutter of the cutting structure and the selvedge 25 is located at the same end, at this time, the winding structure and the cutting structure are not working.

[0011] Preferably, the folding in the width direction comprises: transverse slitting and inner three-folding by using a roller folding structure; folding in the length direction: inner three-folding and output by using a plug-in plate folding structure.

[0012] Preferably, the engineering process of the plug-in plate folding structure in the embodiment of the present application is as follows: S1: the negative pressure transfer roller 5 transfers the inner three-folded gauze 1 obtained by the roller folding structure backward; when the inner three-folded gauze 1 reaches the rear side of the negative pressure transfer roller 5, it is arranged vertically; at this time, the rear negative pressure arm is arranged in front-rear direction, and the longitudinal folding plate 10 is located in the folding opening 14 of the rear negative pressure arm and faces the one-third of the inner three-folded gauze 1.

[0013] S2: the longitudinal folding plate 10 moves backward to the rear part of the L-shaped plate 7 and the rear part of the longitudinal plate 8, and folds the inner three-folded gauze 1 at one-third to obtain the once folded gauze 2, at the same time, the pulling arm 12 synchronously moves backward to push the previous piece of gauze backward into the discharge groove 26; at this time, the once folded gauze 2 is located between the L-shaped plate 7 and the longitudinal plate 8 in front-rear direction and the midpoint thereof faces the transverse folding plate 9.

[0014] S3: the longitudinal folding plate 10 moves forward, when the longitudinal folding plate 10 moves to the adjacent front of the pressing mechanism 11, the pressing mechanism 11 presses the rear end of the once folded gauze 2 on the Z-shaped plate 7; when the longitudinal folding plate 10 moves to the adjacent front of the transverse folding plate 9, the transverse folding plate 9 moves right to fold the once folded gauze 2 at the midpoint to obtain the twice folded gauze 3, at this time, the pressing mechanism 11 returns to release the once folded gauze 2; when the longitudinal folding plate 10 moves forward to the negative pressure transfer roller 5, it is located below the adjacent negative pressure arm; at this time, the twice folded gauze 3 is located in the transverse strip-shaped hole 22 along the left and right directions and is located directly behind the pulling arm 12.

[0015] S4: after the twice folding is completed, the transverse folding plate 9 returns, at the same time, the pulling arm 12 moves backward to push the current twice folded gauze 3 backward to the front side of the gauze pile in the discharge chute 26, when the twice folded gauze 3 passes through the Z-shaped plate 7, the upper and lower ends of the twice folded gauze 3 are bent to the inner sides of the two transverse arms; when the pulling arm 12 moves to the rear part, the guide piece 23 is located between the two pulling rods, and the stopper 13 moves backward by the thickness of a piece of twice folded gauze 3.

[0016] The technical scheme provided by the embodiment of the application has the beneficial effects that the embodiment of the application provides a 3*3 gauze piece with woven edges and a production device and method thereof, can automatically produce a special specification gauze piece, uses gauze with woven edges on two sides (as a standard product) for production, realizes automatic transverse three-folding and longitudinal three-folding, and automatically realizes stacking and counting, which is convenient for manual taking out of the gauze piece with a predetermined number and good stacking; the production speed is fast, and more than 300 pieces can be produced per minute. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a folding schematic view of the 3*3 gauze piece with woven edges in the embodiment of the application; Figure 2 is a structural schematic view of the plug-in plate type folding structure; Figure 3 is a structural schematic view of the negative pressure transfer roller.

[0018] In the figure: 1 inner three-folded gauze, 2 once folded gauze, 3 twice folded gauze, 4 workbench, 5 negative pressure transfer roller, 6 transverse fixed plate, 7 Z-shaped plate, 8 longitudinal plate, 9 transverse folding plate, 10 longitudinal folding plate, 11 pressing mechanism, 12 pulling arm, 13 stopper, 14 folding opening, 15 right strip-shaped hole, 16 left strip-shaped hole, 17 driving wheel, 18 connecting rod, 19 fixed frame, 20 spring, 21 window, 22 transverse strip-shaped hole, 23 guide piece, 24 soft stop piece, 25 woven edge, 26 discharge chute. DETAILED DESCRIPTION

[0019] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings.

[0020] Embodiment 1 Referring to Figure 1 , embodiment 1 provides a 3x3 gauze piece with a woven edge, which is rectangular when unfolded. One wide edge of the gauze piece is a woven edge 25. The gauze is first folded inward in the width direction, and then folded inward in the length direction with the woven edge 25 at the top end (to avoid loose edges and exposed thread ends on the edges). Specifically, when folded inward in the length direction, one end with the woven edge 25 is folded last.

[0021] Embodiment 2 Referring to Figures 1-3 , embodiment 2 provides a production device for a 3x3 gauze piece with a woven edge, which includes a machine frame and power structures thereon, a unwinding structure, a roller folding structure, a winding structure, a cutting structure, and a plug-in plate folding structure, etc. The roller folding structure is used for transverse cutting and inward folding. The roller folding structure is a common structure in the art, and is specifically purchased from Ningbo Haishu Fengcheng Textile Machinery Co., Ltd. The unwinding structure, the cutting structure, the roller folding structure, and the plug-in plate folding structure are arranged in sequence from front to back. The unwinding structure and the winding structure are both conventional structures. The cutting structure is used for cutting the gauze, which includes blades (specifically circular blades) arranged in the left-right direction. The winding structure is located below (such as directly below or front below) the cutting structure and is used for winding the half of the gauze after cutting, and the plug-in plate folding structure is used for folding the other half of the gauze.

[0022] Among them, the plug-in plate folding structure includes a workbench 4, a negative pressure transfer roller 5, a transverse fixed plate 6, an L-shaped plate 7, a longitudinal plate 8, a transverse folding plate 9, a longitudinal folding plate 10, a pressing mechanism 11, a pulling arm 12, a driving structure, a discharge chute 26, and a stop block 13, etc.

[0023] Among them, the workbench 4 in the embodiment of the present application is horizontally arranged in the front-rear direction. The driving mechanism is arranged on the lower side of the workbench 4, which can move forward and backward, and is used to drive the longitudinal folding plate 10 and the pulling arm 12 at the same time.

[0024] The inner three-folded gauze 1 folded by the roller folding structure is transferred backward by the negative pressure transfer roller 5 and adjusted to vertical direction, which is arranged along left-right direction, located at the rear side of the roller folding structure, rotates backward, located above the front part of the workbench 4, and uniformly provided with a plurality of negative pressure arms on the circumferential surface. The negative pressure arms are arranged along the radial direction of the negative pressure transfer roller 5 and can adsorb the inner three-folded gauze 1. The negative pressure arms are provided with folding openings 14 for embedding the longitudinal folding plate 10 at the one-third (counted from left to right) of the inner three-folded gauze 1. The folding openings 14 are arranged along front-rear direction. The inner three-folded gauze 1 on the rear negative pressure arm is arranged in vertical direction (at this time, the negative pressure arm is arranged along front-rear direction), and at this time, the longitudinal folding plate 10 is located in the folding opening 14 and located in front of the inner three-folded gauze 1. The longitudinal folding plate 10 pushes the inner three-folded gauze 1 backward to the between the L-shaped plate 7 and the longitudinal plate 8 to realize the first folding, and obtains the first folded gauze 2 arranged along front-rear direction.

[0025] The horizontal fixing plate 6 is arranged along left-right direction, located adjacent to the rear side of the negative pressure transfer roller 5, arranged on the upper side of the workbench 4, provided with a vertical strip-shaped hole on the left side of the vertical arm of the L-shaped plate 7 for passing the longitudinal folding plate 10 (at the same time, the vertical strip-shaped hole is arranged opposite to the folding opening 14), and provided with a groove capable of accommodating the pulling arm 12 on the rear side. The vertical strip-shaped hole is arranged in vertical direction. The groove is arranged along left-right direction.

[0026] The L-shaped plate 7 is opened to right, located above the workbench 4, includes a vertical arm and two horizontal arms, the front part is fixed on the rear side of the horizontal fixing plate 6, and the rear part is fixed on the workbench 4 (and suspended). The vertical arm is arranged along front-rear direction and arranged in vertical direction. The horizontal arms are arranged along left-right direction and arranged in horizontal direction. The two horizontal arms are flush with the upper and lower ends of the first folded gauze 2 respectively. The longitudinal plate 8 is arranged along front-rear direction and arranged in vertical direction, arranged on the workbench 4, the front end is fixed on the rear side of the horizontal fixing plate 6, located on the left side of the vertical arm and has a gap between the vertical arm for passing the longitudinal folding plate 10 (arranged opposite to the folding opening 14). The workbench 4 is provided with a left strip-shaped hole 16 for passing and front-rear movement of the longitudinal folding plate 10 on the left side corresponding to the vertical arm. The left strip-shaped hole 16 is arranged along front-rear direction.

[0027] The longitudinal folding plate 10 is used for folding the gauze once and adjusting to front-rear direction, arranged in vertical direction, the lower end is arranged on the driving mechanism, capable of front-rear movement, capable of moving backward to the rear part of the vertical arm, and upward passing the left strip-shaped hole 16.

[0028] The transverse folding plate 9 is used for secondary folding and adjusting the gauze to left and right direction, is located at the left side of the front part of the longitudinal plate 8, is arranged along the left and right direction, can move left and right, is arranged opposite to the middle point of the primary folded gauze 2, is used for secondary folding (moving right) and reversing the primary folded gauze 2 to obtain the secondary folded gauze 3. The transverse strip hole 22 for the transverse folding plate 9 to pass through is arranged at the corresponding position of the L-shaped plate 7 and the longitudinal plate 8. The transverse strip hole 22 is arranged along the left and right direction, and is arranged close to the transverse fixed plate 6.

[0029] The pressing mechanism 11 is arranged behind the transverse folding plate 9, is located at the left side of the rear part of the L-shaped plate 7, is arranged along the left and right direction, can move left and right, and is used for pressing the rear end of the primary folded gauze 2 on the L-shaped plate 7. The notch for the pressing mechanism 11 to pass through is arranged at the corresponding position of the longitudinal plate 8.

[0030] The pulling arm 12 is used for outputting the secondary folded gauze 3 to the discharge groove 26 and stacking forward and backward, is arranged along the left and right direction, is arranged in front of the transverse folding plate 9, is arranged behind the transverse fixed plate 6 (specifically arranged in the groove), can move forward and backward, is used for moving backward to push the secondary folded gauze 3 to the discharge groove 26, the right end of the pulling arm 12 is connected with the driving mechanism through the connecting part (vertically arranged and downwardly passing through the right strip hole 15), and the left part of the pulling arm 12 is located between the two transverse arms. The right strip hole 15 for the connecting part to pass through and move forward and backward is arranged on the workbench 4.

[0031] The discharge groove 26 is arranged along the front and back direction, is arranged at the rear side of the L-shaped plate 7, the groove bottom is flush with the lower transverse arm, the two groove edges are respectively located at the adjacent outer sides of the left and right sides of the secondary folded gauze 3, and the front end of the right groove edge is provided with a position avoiding window matched with the pulling arm 12 to ensure that the pulling arm 12 can move backward to the front part of the discharge groove 26. The stop block 13 abuts against the rear side of the secondary folded gauze 3 (forming a gauze stack) stacked forward and backward, is arranged in the rear part of the discharge groove 26, and can slide forward and backward in the discharge groove 26.

[0032] The power structure is used for synchronously driving the roller folding structure, the transverse folding plate 9, the negative pressure transfer roller 5, the driving wheel 17 and the like, and synchronous driving is realized through a gear box, a telescopic driving structure (for the transverse folding plate 9) and the like.

[0033] The driving mechanism in the embodiment of the application comprises a sliding base, a connecting rod 18, a driving wheel 17 and two sliding rods. The two sliding rods are arranged side by side and are arranged on the lower side of the workbench 4 in the front-rear direction. The sliding base is arranged to slide on the two sliding rods and can slide in the front-rear direction. The longitudinal folding plate 10 and the connecting part are arranged on the sliding base, and the longitudinal folding plate 10 is located in front of the left side of the connecting part. The connecting rod 18 is arranged in the front-rear direction, the front end of the connecting rod 18 is eccentrically connected to the right side of the driving wheel 17 (through a left-right rotating shaft or a ball head), and the rear end of the connecting rod 18 is hingedly connected to the sliding base (through a left-right rotating shaft or a ball head). The connecting rod 18 drives the sliding base to move in the front-rear direction by rotating the driving wheel 17. The driving wheel 17 is arranged in the left-right direction and is drivingly connected to the power structure. The left side of the driving wheel 17 is provided with a concave-convex guide rail (a conventional structure, when the guide wheel is located in the concave part, the pressing mechanism 11 moves to the right to perform the pressing action; otherwise, the pressing mechanism 11 moves to the left to the left side of the longitudinal plate 8). The driving wheel 17 is located below the workbench 4. The fixed frame 19 is arranged on the workbench 4 and located on the left side of the longitudinal plate 8. The front side of the fixed frame 19 is provided with a sliding rail in the left-right direction. The rear side of the pressing mechanism 11 is arranged to slide on the sliding rail, the lower side of the pressing mechanism 11 is arranged to be guided in the vertical direction, and the left side of the pressing mechanism 11 and the workbench 4 are provided with a spring 20 for pushing the pressing mechanism 11 to the right. The spring 20 is arranged in the left-right direction. The workbench 4 is provided with a window 21 (specifically, a rectangular opening arranged in the front-rear direction) for the guide wheel to pass through and move in the left-right direction and located directly above the driving wheel 17. Specifically, the fixed frame 19 is a door-shaped support arranged in the left-right direction. The lower ends of the two vertical beams of the fixed frame 19 are fixed to the workbench 4 and are located on the left and right sides of the window 21, respectively. The guide wheel is slidingly connected to the concave-convex guide rail. When the driving wheel 17 rotates one revolution, the pressing mechanism 11 moves back and forth in the left-right direction one time.

[0034] Embodiment 3 Referring to Figure 2 Embodiment 3 provides a production device for a 3x3 gauze piece with a woven edge. The structure of the production device is basically the same as that of the production device of Embodiment 2, except that the right part of the transverse strip-shaped hole 22 on the transverse arm in this embodiment is provided with a plurality of teeth on both sides to avoid the transverse folding plate 9 from taking away the gauze when the transverse folding plate 9 returns to the original position, and the left part of the transverse strip-shaped hole 22 is provided with an anti-static adhesive tape.

[0035] Embodiment 4 Referring to Figure 2 Embodiment 4 provides a production device for a 3x3 gauze piece with a woven edge. The structure of the production device is basically the same as that of the production device of Embodiment 2, except that the pulling arm 12 in this embodiment comprises two pulling rods arranged side by side in the up-down direction. The two pulling rods are located on the upper part and the lower part of the twice-folded gauze 3, respectively. The pulling rods are arranged in the left-right direction and are provided with an anti-static adhesive tape on the rear side. The front end of the avoidance window and the right groove edge of the discharge slot 26 are provided with a guide piece 23. The guide piece 23 is located between the two pulling rods, is bent obliquely to the right from back to front, and the front end of the guide piece 23 is located behind the front end of the discharge slot 26. The foregoing structure ensures that the twice-folded gauze 3 is well stacked.

[0036] Example 5 Referring to Figure 2 , Example 5 provides a production device of 3x3 gauze pieces with woven edges, which has substantially the same structure as that of Example 2, except that the rear end of each of the two transverse arms is provided with a soft baffle 24. The upper soft baffle 24 is located adjacent to the lower end of the twice-folded gauze 3, and the lower soft baffle 24 is located adjacent to the upper end of the twice-folded gauze 3. The soft baffle 24 is specifically a soft body arranged along the left-right direction, which has two functions: one is to ensure that the twice-folded gauze 3 does not tilt when moving backward; the other is to avoid deformation and adhesion of the gauze stack on the U-shaped plate 7.

[0037] Example 6 Example 6 provides a production device of 3x3 gauze pieces with woven edges, which has substantially the same structure as that of Example 2, except that the transverse fixed plate 6 in this embodiment is provided with a photoelectric sensor corresponding to the folding opening 14, which is used for counting the gauze. The bottom of the front part of the discharge chute 26 is provided with a top block that can move up and down (which can lift a gauze piece upward), and when the twice-folded gauze 3 in the discharge chute 26 and located behind the top block reaches a predetermined number, the top block is lifted to make the corresponding twice-folded gauze 3 protrude upward. For example, one gauze piece is lifted every fifty gauze pieces, which is convenient for the operator to manually stack.

[0038] Example 7 Referring to Figure 3 , Example 7 provides a production device of 3x3 gauze pieces with woven edges, which has substantially the same structure as that of Example 2, except that the number of negative pressure arms in this embodiment is three, and the included angle between the two adjacent negative pressure arms is 120°. A plurality of grooves are arranged side by side on each negative pressure arm, and a negative pressure hole (for adsorption) is arranged between the grooves.

[0039] Example 8 Referring to Figures 1-2, embodiment 8 provides a method for producing gauze by using the production device of any one of embodiments 2-7, the method comprising: cutting the gauze with two edges into two halves by cutting structure. winding one half of the gauze after cutting, and folding the other half of the gauze in the width direction first, and then folding it in the length direction. After the other half of the gauze is processed, the half of the gauze wound in the same processing equipment (which can adjust the position and direction on the unwinding structure, or can adjust the position and direction on the unwinding structure; preferably on the unwinding structure) is sequentially folded in the width direction and in the length direction, at this time, the half of the gauze and the other half of the gauze are located on the same side of the cutter of the cutting structure and the selvedge 25 is located at the same end, at this time, the winding structure and the cutting structure do not work. Wherein, folding in the width direction includes: transverse slitting and inner three-folding by roller folding structure; folding in the length direction: inner folding and output by plug plate folding structure.

[0040] Preferably, the engineering process of the plug plate folding structure in the embodiment of the present application is as follows: S1: the negative pressure transfer roller 5 transfers the inner three-folded gauze 1 obtained by the roller folding structure backward; the inner three-folded gauze 1 is vertically arranged when it reaches the rear side of the negative pressure transfer roller 5. At this time, the negative pressure arm on the rear side is arranged in the front-rear direction, and the longitudinal folding plate 10 is located in the folding opening 14 of the negative pressure arm on the rear side and faces the one-third of the inner three-folded gauze 1.

[0041] S2: the longitudinal folding plate 10 moves backward to the rear part of the L-shaped plate 7 and the rear part of the longitudinal plate 8, and folds the inner three-folded gauze 1 at one-third to obtain the first folded gauze 2, at the same time, the pulling arm 12 synchronously moves backward to push the previous piece of gauze backward into the discharge slot 26. At this time, the first folded gauze 2 is located between the L-shaped plate 7 and the longitudinal plate 8 in the front-rear direction, and the midpoint thereof faces the transverse folding plate 9.

[0042] S3: the longitudinal folding plate 10 moves forward, when the longitudinal folding plate 10 moves to the adjacent front of the pressing mechanism 11, the pressing mechanism 11 presses the rear end of the first folded gauze 2 on the L-shaped plate 7. When the longitudinal folding plate 10 moves to the adjacent front of the transverse folding plate 9, the transverse folding plate 9 moves to the right to fold the first folded gauze 2 at the midpoint to obtain the second folded gauze 3, at this time, the pressing mechanism 11 returns to release the first folded gauze 2. When the longitudinal folding plate 10 moves forward to the negative pressure transfer roller 5, it is located below the adjacent negative pressure arm (which is the corresponding negative pressure arm of the negative pressure arm in step S1, specifically the negative pressure arm adjacent to the front of the current negative pressure arm in step S1). At this time, the second folded gauze 3 is located in the transverse strip-shaped hole 22 in the left-right direction and is located directly behind the pulling arm 12.

[0043] S4: After the second folding is completed, the transverse folding plate 9 is reset, at the same time, the pulling arm 12 moves backward to push the current second folded gauze 3 backward to the front side of the gauze pile in the discharge chute 26, when the second folded gauze 3 passes through the U-shaped plate 7, the upper and lower ends of the second folded gauze 3 are bent to the inner side of the two transverse arms. When the pulling arm 12 moves to the rear, the guide piece 23 is located between the two pulling rods, and the stopper 13 (the stopper 13 and the gauze pile are pushed backward as a whole) moves backward by the thickness of a piece of second folded gauze 3.

[0044] In this way, the production of multiple gauze pieces is realized.

[0045] The above only describes the preferred embodiments of the present application and is not used to limit the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A 3×3 gauze sheet with a woven edge, which unfolds into a rectangle; characterized in that, The gauze sheet has a wide edge called the selvage (25); the gauze is first folded inwards three times in the width direction, and then folded inwards three times in the length direction, with the selvage (25) located at the top.

2. A production apparatus for 3×3 gauze sheets with selvage, comprising a frame and an unwinding structure and a roller folding structure thereon, wherein the roller folding structure is used for transverse slitting and inward tri-folding; characterized in that, It also includes a winding structure, a cutting structure, and a plate-type folding structure; the unwinding structure, the cutting structure, the roller-type folding structure, and the plate-type folding structure are arranged sequentially from front to back; the cutting structure is used to cut the gauze in half; the winding structure is located below the cutting structure and is used to wind up one half of the cut gauze; the plate-type folding structure is used to fold the other half of the gauze. The insert-plate folding structure includes a workbench (4), a negative pressure transfer roller (5), a transverse fixing plate (6), a U-shaped plate (7), a longitudinal plate (8), a transverse folding plate (9), a longitudinal folding plate (10), a pressing mechanism (11), a puller arm (12), a drive structure, a discharge trough (26), and a stop block (13). The negative pressure transfer roller (5) transfers the inner three-folded yarn (1) obtained by the roller folding structure backward and adjusts it to the vertical direction. The longitudinal folding plate (10) folds the yarn once and adjusts it to the front-back direction. The transverse folding plate (9) folds the yarn twice and adjusts it to the left-right direction. The puller arm (12) outputs the folded yarn backward to the discharge trough (26) and stacks it back and forth.

3. The apparatus according to claim 2, characterized in that, The workbench (4) is set horizontally in the front-to-back direction; The drive mechanism is located on the lower side of the workbench (4) and moves back and forth within it; The negative pressure transfer roller (5) is arranged in the left-right direction and is located on the rear side of the roller folding structure. It rotates backward and is located above the front of the worktable (4). Multiple negative pressure arms are evenly arranged on its circumference. The negative pressure arms are arranged radially along the negative pressure transfer roller (5) and can adsorb the inner three-fold yarn (1). The negative pressure arm is provided with a folding opening (14) for the longitudinal folding plate (10) to be inserted at one-third of the inner three-fold yarn (1). The folding opening (14) is arranged in the front-back direction. The inner three-fold yarn (1) on the rear negative pressure arm is arranged vertically. At this time, the longitudinal folding plate (10) is located in the folding opening (14) and is located in front of the inner three-fold yarn (1). The longitudinal folding plate (10) pushes the inner three-fold yarn (1) backward to the C-shaped plate (7) and the longitudinal plate (8) to achieve one fold, resulting in a one-fold yarn (2) in the front-back direction. The transverse fixing plate (6) is arranged in the left-right direction and is located adjacent to the rear of the negative pressure transfer roller (5). It is located on the upper side of the worktable (4). The scalloped plate (7) opens to the right and is located above the workbench (4). It includes a vertical arm and two horizontal arms. Its front part is fixed to the rear side of the horizontal fixing plate (6), and its rear part is fixed to the workbench (4). The two horizontal arms are respectively flush with the upper and lower ends of the first folded gauze (2). The longitudinal plate (8) is arranged in the front-back direction and is located on the workbench (4). Its front end is fixed to the rear side of the transverse fixed plate (6). It is located on the left side of the vertical arm and has a gap between it and the vertical arm for the longitudinal folding plate (10) to pass through. The transverse fixed plate (6) is provided with a vertical strip hole on the left side corresponding to the vertical arm for the longitudinal folding plate (10) to pass through. The vertical strip hole is arranged vertically. The workbench (4) is provided with a left strip hole (16) on the left side corresponding to the vertical arm for the longitudinal folding plate (10) to pass through and move in the front-back direction. The left strip hole (16) is arranged in the front-back direction. The longitudinal folding plate (10) is arranged vertically, and its lower end is located on the drive mechanism. It can move backward to the rear of the vertical arm. The transverse folding plate (9) is located on the left side of the front of the longitudinal plate (8). It is arranged in the left and right direction and can move in the left and right direction. It is set at the midpoint of the first folded gauze (2) and is used to fold the first folded gauze (2) a second time and change its direction. The U-shaped plate (7) and the longitudinal plate (8) are provided with transverse strip holes (22) for the transverse folding plate (9) to pass through. The transverse strip holes (22) are arranged in the left and right direction. The pressing mechanism (11) is located behind the transverse folding plate (9) and is located on the left side of the U-shaped plate (7). It can move in the left and right direction and is used to press the rear end of the first folded gauze (2) against the U-shaped plate (7). The longitudinal plate (8) is provided with a notch for the pressing mechanism (11) to pass through. The pull arm (12) is arranged in the left and right direction. It is located in front of the horizontal folding plate (9) and behind the horizontal fixing plate (6). It can move back and forth. It is used to push the second-folded gauze (3) backward to the discharge trough (26). Its right end is connected to the drive mechanism through the connecting part, and its left part is located between the two horizontal arms. The worktable (4) is provided with a right strip hole (15) for the connecting part to pass through and move back and forth. The discharge trough (26) is arranged in the front-back direction and is located on the rear side of the shaped plate (7). Its bottom is flush with the horizontal arm below. Its two sides are located on the adjacent outer sides of the left and right sides of the double-folded gauze (3). The front end of its right side is provided with a clearance window that cooperates with the pull arm (12). The stop block (13) rests against the rear side of the double-folded gauze (3) after being stacked in front and behind, and is placed in the rear part of the discharge trough (26), and can slide back and forth in the discharge trough (26).

4. The apparatus according to claim 3, characterized in that, The drive mechanism includes two slide rods arranged side by side on the lower side of the workbench (4), a slide seat slidably mounted on the two slide rods, a connecting rod (18) arranged in the front-back direction, and a drive wheel (17) arranged in the left-right direction. The slide rods are arranged in the front-back direction. The longitudinal folding plate (10) and the connecting part are both mounted on the slide seat. The longitudinal folding plate (10) is located in front of the left side of the connecting part. The device also includes a power structure. The front end of the connecting rod (18) is eccentrically connected to the right side of the drive wheel (17), and its rear end is hinged to the slide block, which allows the rotation of the drive wheel (17) to drive the slide block to move back and forth; the power structure is used to synchronously drive the roller folding structure, the transverse folding plate (9), the negative pressure transfer roller (5) and the drive wheel (17); the drive wheel (17) is connected to the power structure for transmission, and its left side is provided with a concave-convex guide rail, which is located below the worktable (4); a fixing frame (19) is provided on the worktable (4) and on the left side of the longitudinal plate (8), and the front of the fixing frame (19) is... The side is provided with a slide rail in the left and right direction; the rear side of the pressing mechanism (11) is slidably provided on the slide rail, and the lower side is provided with a guide wheel in the vertical direction. A spring (20) is provided between the left side of the guide wheel and the worktable (4) for pushing the pressing mechanism (11) to the right; the spring (20) is provided in the left and right direction, and a window (21) is provided on the worktable (4) and directly above the drive wheel (17) for the guide wheel to pass through and move in the left and right direction; the guide wheel is slidably connected to the concave and convex guide rail, so that when the drive wheel (17) rotates one revolution, the pressing structure (11) moves back and forth in the left and right direction once.

5. The apparatus according to claim 3, characterized in that, The transverse strip hole (22) is located near the transverse fixing plate (6); the rear side of the transverse fixing plate (6) is provided with a groove that can accommodate the pull arm (12); the groove is arranged in the left and right direction; the right side of the transverse strip hole (22) on the transverse arm is provided with multiple teeth arranged side by side, and the left side is provided with antistatic tape.

6. The apparatus according to claim 3, characterized in that, There are three negative pressure arms, and the included angle between two adjacent negative pressure arms is 120°. Each negative pressure arm has multiple grooves arranged side by side, and negative pressure holes are located between the grooves.

7. The apparatus according to claim 3, characterized in that, The pull arm (12) includes two pull rods arranged side by side, one above the other. The two pull rods are located at the upper and lower parts of the double-folded yarn (3), respectively. The pull rods are arranged in a left-right direction and have anti-static tape on their rear side. A guide plate (23) is provided at the front end of the right side of the discharge trough (26) at the avoidance window. The guide plate (23) is located between the two pull rods and is bent diagonally to the right from back to front. Soft baffles (24) are provided at the rear ends of both transverse arms. The upper soft baffle (24) is located at the double-folded yarn. The soft baffle (24) is located above the lower end of the second-folded gauze (3) adjacent to the upper end of the cloth (3); the horizontal fixing plate (6) and the photoelectric sensor corresponding to the folding opening (14) are provided, and the photoelectric sensor counts the gauze; the bottom of the discharge trough (26) is provided with a top block that can move up and down. When the second-folded gauze (3) in the discharge trough (26) and behind the top block reaches a predetermined number, the top block pushes up to make the corresponding second-folded gauze (3) bulge upward.

8. A method for producing gauze using the production apparatus as described in claim 3, characterized in that, The method includes: The yarn with selvage on both sides is cut by the cutting structure; the cut half of the yarn is wound up, and the other half of the yarn is first folded inwards three times in the width direction and then folded inwards three times in the length direction; after the other half of the yarn is processed, the wound half of the yarn is folded inwards three times in the width direction and inwards three times in the length direction on the same processing equipment. At this time, half of the yarn and the other half of the yarn are located on the same side of the cutter of the cutting structure and the selvage (25) is located at the same end. At this time, the winding structure and the cutting structure do not work.

9. The method according to claim 8, characterized in that, In the width direction, the inward three-folding includes: lateral cutting and inward three-folding through a roller folding structure; in the length direction, the inward three-folding includes: inward three-folding and output through a plate-type folding structure.

10. The method according to claim 9, characterized in that, The engineering process of the insert-type folding structure is as follows: S1: The negative pressure transfer roller (5) transfers the inner three-fold yarn (1) obtained by the roller folding structure to the rear; when the inner three-fold yarn (1) reaches the rear side of the negative pressure transfer roller (5), it is set vertically; at this time, the negative pressure arm on the rear side is set in the front-back direction, and the longitudinal folding plate (10) is located in the folding opening (14) of the negative pressure arm on the rear side and is directly opposite one-third of the inner three-fold yarn (1); S2: The longitudinal folding plate (10) moves backward to the rear of the C-shaped plate (7) and the rear of the longitudinal plate (8), and folds the inner three-fold gauze (1) at one-third of its length to obtain a one-fold gauze (2). At the same time, the pull arm (12) moves backward synchronously, pushing the previous piece of gauze backward into the discharge trough (26). At this time, the one-fold gauze (2) is located between the C-shaped plate (7) and the longitudinal plate (8) along the front-back direction, and its midpoint is directly opposite the transverse folding plate (9). S3: The longitudinal folding plate (10) moves forward. When the longitudinal folding plate (10) moves to the adjacent front of the pressing mechanism (11), the pressing mechanism (11) presses the rear end of the first folded gauze (2) onto the U-shaped plate (7). When the longitudinal folding plate (10) moves to the adjacent front of the transverse folding plate (9), the transverse folding plate (9) moves to the right and folds the first folded gauze (2) at the midpoint to obtain the second folded gauze (3). At this time, the pressing mechanism (11) returns to its original position to release the first folded gauze (2). When the longitudinal folding plate (10) moves forward to the negative pressure transfer roller (5), it is located behind and below the adjacent negative pressure arm. At this time, the second folded gauze (3) is located in the transverse strip hole (22) along the left and right direction and is located directly behind the pull arm (12). S4: After the second fold is completed, the horizontal folding plate (9) returns to its original position. At the same time, the pull arm (12) moves backward to push the current second folded gauze (3) backward to the front side of the gauze stack in the discharge trough (26). When the second folded gauze (3) passes through the C-shaped plate (7), the upper and lower ends of the second folded gauze (3) are bent to the inside of the two horizontal arms. When the pull arm (12) moves to the rear, the guide plate (23) is located between the two pull rods, and the stop block (13) moves backward by the thickness of one second folded gauze (3).

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