Ton bag sling sewing processing equipment and sewing method

Abstract

The invention discloses ton bag sling sewing processing equipment and a sewing method. The ton bag sling sewing processing equipment comprises the following steps: S1, sewing a circle of lower ring belt on the lower part of base cloth; s2, sewing a circle of upper ring belt on the upper part of the base cloth; s3, hanging belts are sewn on corner separation lines of the base cloth, hanging rings are reserved at the upper ends of the hanging belts, and hook-and-loop fasteners are reserved at the lower ends of the hanging belts; s4, a bottom belt is sewed outwards on the base cloth along the diagonal line, and a hook-and-loop fastener is reserved at the outward end of the bottom belt; s5, sewing bottom cloth at the lower end of the base cloth, and overlapping and folding the sewn edges for at least one time; s6, sewing top cloth at the upper end of the base cloth, and overlapping and folding the sewn edges for at least one time. A traditional hanging belt is divided into two parts, one part is a ton bag main body, the other part is a ton bag bottom, the assembly line technology is decomposed, the physical strength of workers is saved, the productivity is improved, and meanwhile preparation is made for follow-up automation.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ton bag manufacturing, in particular to a ton bag sling sewing processing equipment and a sewing method. BACKGROUND

[0002] The ton bag, also known as a flexible container bag, a container bag, a space bag, etc., is a medium-sized bulk container and is a kind of container unit device. With a crane or a forklift, container unit transportation can be realized. The ton bag is made of polypropylene as the main raw material, PP filaments with high strength and low elongation are made, and then the plastic woven cloth base cloth is made by weaving and film coating. After being sewn with sling and other accessories, the ton bag is made. The existing ton bag manufacturing method can basically meet the daily use requirements, but there are still some deficiencies to be improved.

[0003] Patent document CN103662464A discloses a tight-mouth ton bag on September 21, 2012, which includes a ton bag body, a hanging belt, an extension rubber ring, and a tight elastic mouth. The features are that a tight elastic mouth is sewn at the sealing place of the ton bag body, making the ton bag inlet more narrow. An extension rubber ring is fixedly sewn at the narrowest place, and a hanging belt is sewn at the ton bag body. The present application has the advantages of simple structure, easy manufacturing, tight connection of the ton bag mouth and the feeding mouth, difficulty of dust leakage during the filling process, reduction of external leakage caused by the failure of tight combination of the feeding mouth and the receiving mouth, saving of cost, and reduction of environmental pollution caused by excessive dust leakage. Moreover, the ton bag is not easy to damage.

[0004] In the prior art, the hanging bag or sling provided on the ton bag is sewn from the upper half of the base cloth body to the bottom in steps, forming a bottomed shape, and then sewn from the bottom to the upper part of the base cloth body in steps. It needs to be repeated four times at the four corners of the ton bag. Obviously, the above sewing action is large, and the weight of the bag body tests the physical strength of the workers, so there is an urgent need for a ton bag sling sewing processing equipment and a sewing method to solve the above problems. SUMMARY

[0005] The purpose of the present application is to provide a ton bag sling sewing processing equipment and a sewing method to solve the above problems in the prior art.

[0006] In order to achieve the above purpose, the present application provides the following technical scheme: A ton bag sling sewing method, comprising the following steps: S1: sew a lower ring belt on the lower part of the base cloth; S2: sew an upper ring belt on the upper part of the base cloth; S3: sew a sling on the corner separation line of the base cloth, with a sling ring reserved at the upper end of the sling and a magic tape reserved at the lower end of the sling; S4: Diagonal outwardly sew the bottom tape on the base cloth, and reserve the magic tape at the outward end of the bottom tape; S5: Sew the bottom cloth at the lower end of the base cloth, and overlap and fold the sewn edge at least once; S6: Sew the top cloth at the upper end of the base cloth, and overlap and fold the sewn edge at least once.

[0007] Preferably, S2 and S3 can be performed synchronously, and each time the loop tape is sewn on the base cloth, the corner of the base cloth is separated by the loop tape, and the sling is inserted into the inner side of the loop tape and sewn and fixed together.

[0008] Preferably, the magic tape is set to be 6-8 cm wide and 8-12 cm long, the magic tape on the sling is set to be a hook surface, and the magic tape on the bottom tape is set to be a wool surface.

[0009] A ton bag sling sewing processing equipment for producing ton bags according to the ton bag sling sewing method described above, comprising a table body and a machine body, the table body is provided with a reciprocating feeding block, further comprising: a synchronous shaft rotatably arranged in the table body and synchronously linked with the feeding block; a ring sleeve is arranged outside the synchronous shaft, and a sliding sleeve in screw transmission connection with the synchronous shaft is coaxially connected to the inner side of the ring sleeve through a one-way transmission assembly; a lever is fixedly connected to the ring sleeve at one end and movably penetrates a through groove formed in the side wall of the table body at the other end.

[0010] Preferably, a driving shaft for driving the feeding block to move is arranged in the table body, the driving shaft is connected to the synchronous shaft through a speed reduction gear transmission, and one end of the driving shaft is provided with a clutch linked with the main shaft of the machine body.

[0011] Preferably, a spiral groove is arranged on the outer wall of the synchronous shaft, and a sliding convex is arranged on the inner wall of the sliding sleeve and in sliding connection with the spiral groove.

[0012] Preferably, a positioning column is movably arranged on the table body, and the lifting of the positioning column is linked with the axial movement of the ring sleeve on the synchronous shaft.

[0013] Preferably, a lifting seat connected with the positioning column is movably arranged in the table body, one side of the lifting seat is movably connected with the inside of the table body, a linkage groove is arranged on the lower side of the lifting seat, a displacement member is arranged on the synchronous shaft, and a linkage pin movably connected with the linkage groove is arranged on the upper end of the displacement member.

[0014] Preferably, a delay assembly is arranged in the table body to prevent the lifting seat from descending from the highest position, and the delay assembly is triggered by the movement of the ring sleeve on the synchronous shaft to cancel the obstruction to the lifting seat.

[0015] Preferably, the time delay assembly comprises a lever elastically connected in the table body and a trigger lever slidingly arranged, the upper end of the lever is movably connected with a limiting piece, the limiting piece is slidingly arranged in the table body, the lifting seat is provided with a limiting hole matched with the limiting piece, the lower end of the lever corresponds to the trigger lever, the trigger lever is movably arranged with a vertical rod, the upper end of the vertical rod is provided with a sliding pin, the table body is provided with a V-shaped groove matched with the sliding pin, and the lower end of the vertical rod extends into the movable stroke of the ring sleeve.

[0016] In the above technical solution, the beneficial effects of the present application are: The ton bag sling sewing method divides the traditional sling into two parts, one part is the ton bag main body, that is, sewn on the corner separation line of the ton bag side, and the other part is the ton bag bottom, which is directly sewn on the bottom during the bottom sewing process of the assembly line, and then when the base fabric main body of the ton bag is sewn on the assembly line, the sling of the main body only needs to be sewn from top to bottom along the corner separation line of the base fabric to the lower part of the main body, and the two parts of the sling are attached by magic tape. Obviously, the sewing method decomposes the assembly line process, saves the physical strength of workers, improves the production capacity, and also prepares for subsequent automation.

[0017] It should be understood that the foregoing general description and the following detailed description are merely exemplary and explanatory, rather than limiting the present disclosure.

[0018] This application file provides an overview of various implementations or examples of the technology described in this disclosure, and is not a comprehensive disclosure of the full scope or all features of the disclosed technology. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed in the embodiments. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art based on these drawings.

[0020] Figure 1 The ton bag structure schematic diagram provided by the embodiment of the present application; Figure 2 The ton bag bottom surface structure schematic diagram provided by the embodiment of the present application; Figure 3 The sewing processing equipment structure schematic diagram provided by the embodiment of the present application; Figure 4 The table body internal structure schematic diagram provided by the embodiment of the present application; Figure 5 The front view cross-sectional structure schematic diagram of the sewing processing equipment provided by the embodiment of the present application; Figure 6 The front view cross-sectional structure schematic diagram of the sewing processing equipment provided by the embodiment of the present application; Figure 5An enlarged structural schematic view at A in the figure; Figure 7 An internal cross-sectional structure schematic view of the ring provided for the embodiment of the present application.

[0021] Reference numerals: 1, base; 2, machine body; 3, feeding block; 4, synchronous shaft; 5, ring; 6, sliding sleeve; 7, lever; 8, through slot; 9, driving shaft; 10, clutch; 11, helical groove; 12, sliding convex; 13, positioning column; 14, lifting seat; 15, linkage groove; 16, displacement piece; 17, linkage pin; 18, lever; 19, trigger lever; 20, limiting piece; 21, limiting hole; 22, vertical rod; 23, sliding pin; 24, V-shaped groove; 25, auxiliary shaft; 26, ratchet wheel; 27, pawl; 28, adjusting bolt; 29, locking pin; 30, pin hole. DETAILED DESCRIPTION

[0022] To make the objectives, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be described clearly and completely below with reference to the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by a person of ordinary skill in the art without any inventive effort fall within the protection scope of the present disclosure.

[0023] The ton bag sling sewing method provided by the embodiment of the present application comprises the following steps: S1: sew a lower ring belt on the lower part of the base cloth; S2: sew an upper ring belt on the upper part of the base cloth; S3: sew a sling on the corner separation line of the base cloth, reserve a lifting ring at the upper end of the sling, and reserve a magic tape at the lower end of the sling; S4: sew a bottom belt outward along the diagonal line on the base cloth, and reserve a magic tape at the outward end of the bottom belt; S5: sew the base cloth on the lower end of the base cloth, and overlap and fold the edge of the sewing at least once; S6: sew the top cloth on the upper end of the base cloth, and overlap and fold the edge of the sewing at least once.

[0024] In the above steps, S2 and S3 can be performed synchronously, and in the sewing of the upper ring belt on the base cloth, the sling is inserted into the inner side of the upper ring belt along the corner separation line of the base cloth every time the corner is passed, and is sewn and fixed together; the Velcro is set to be 6-8cm wide and 8-12cm long, the Velcro on the sling is set to be a hook surface, and the Velcro on the bottom belt is set to be a fuzzy surface. The upper and lower ends of the sling are extended out of the upper and lower ends of the ton bag, and the length of the bottom belt does not extend out of the bottom cloth, that is, does not extend out of the bottom of the ton bag. When in use, the Velcro at the lower end of the sling is folded over the bottom of the ton bag to be connected with the Velcro on the bottom belt. The ton bag processed by the above method is shown in Figures 1-2 as shown.

[0025] The sewing method divides the traditional sling into two parts, one part is the ton bag body, that is, sewn on the corner separation line of the ton bag side, and the other part is the bottom of the ton bag; the bottom sling is attached with a 7cm wide and 10cm long fuzzy surface of Velcro at the same time when the cutting process is completed; during the bottom sewing process of the assembly line, the bottom is directly sewn and can be used; then during the sewing of the base cloth body of the ton bag on the assembly line, the sling of the body part only needs to be sewn from top to bottom along the corner separation line of the base cloth to the lower part of the body, and a 7cm wide and 10cm long hook surface of Velcro is flowed out at the lower end, which is used to be connected with the fuzzy surface of Velcro on the bottom.

[0026] It can be seen that the above sewing method decomposes the assembly line process, saves the physical strength of workers, improves the production capacity, and also prepares for subsequent automation.

[0027] Please refer to Figures 3-7 The ton bag sling sewing and processing equipment provided by the embodiment of the application is used for producing ton bags according to the ton bag sling sewing method described above, and comprises a table body 1 and a machine body 2. The table body 1 is provided with a reciprocating feeding block 3. The ton bag sling sewing and processing equipment further comprises a synchronous shaft 4, a ring sleeve 5, a sliding sleeve 6, and a push rod 7. The synchronous shaft 4 is rotatably arranged in the table body 1 and is synchronously connected with the feeding block 3. The ring sleeve 5 is arranged outside the synchronous shaft 4 and is coaxially connected with the synchronous shaft 4 through a one-way transmission assembly on the inner side. The sliding sleeve 6 is in screw transmission connection with the synchronous shaft 4. One end of the push rod 7 is fixedly connected with the ring sleeve 5, and the other end is movably arranged through a through slot 8 formed in the side wall of the table body 1.

[0028] Specifically, the upper end of the table body 1 is provided as a plane to ensure smooth sewing process; the machine body 2 is a machine head for driving the needle movement, and the needle carried thereby is below the sewing station, and the feeding block 3 is provided corresponding to the sewing station; the main shaft of the machine body 2 is driven by a servo system; the feeding block 3 is provided with a tooth surface extending along the sewing direction at the upper end, and the feeding block 3 is cyclically raised and lowered, and fed along the sewing direction in the raising process; a driving shaft 9 for driving the feeding block 3 to move is arranged in the table body 1, the driving shaft 9 is arranged through a reduction gear transmission connection synchronous shaft 4, one end of the driving shaft 9 is provided with a clutch 10 linked with the main shaft of the machine body 2; the driving shaft 9 is parallel to the synchronous shaft 4 in the axial direction, an eccentric wheel is arranged on the driving shaft 9, and another auxiliary shaft 25 parallel to the driving shaft 9 is also rotatably arranged in the table body 1, the driving shaft 9 and the auxiliary shaft 25 are connected through a belt wheel to rotate synchronously, and an eccentric wheel is also arranged on the auxiliary shaft 25, and the two eccentric wheels are sleeved with the same up-and-down piece fixedly connected with the feeding block 3, so that the driving shaft 9 rotates under the control of the servo system to drive the feeding block 3 to reciprocate. The ring sleeve 5 is coaxially arranged with the synchronous shaft 4; the one-way transmission assembly includes a ratchet wheel 26 arranged on the inner side of the ring sleeve 5 and a pawl 27 elastically hinged on the outer side of the sleeve 6, and the ratchet wheel 26 and the pawl 27 cooperate to enable the ring sleeve 5 to only rotate in one direction relative to the sleeve 6; the direction of the movement of the ring sleeve 5 along the axial direction of the synchronous shaft 4 matches the movement of the push rod 7 in the through slot 8, and the through slot 8 limits the movement range of the push rod 7, and within this range, a certain number of rotations of the synchronous shaft 4 are linked to a certain number of rotations of the driving shaft 9, and a certain number of activities of the feeding block 3 are linked to the certain number of rotations of the driving shaft 9, and the feeding amount generated by the certain number of activities of the feeding block 3 is just corresponding to the distance between two adjacent corner separation lines of the base cloth; in addition, when the driving shaft 9 is stopped from rotating due to the above limitation, the clutch 10 can be triggered to be disconnected, and the disconnection of the clutch 10 can be received by the servo system and stopped from automatically running, and the specific function is the prior art, which will not be described herein. Further, under the screw transmission relationship between the one-way transmission assembly, the synchronous shaft 4 and the sleeve 6, when the ring sleeve 5 wants to move towards the direction close to the reduction gear, the one-way transmission assembly hinders the relative rotation between the ring sleeve 5 and the sleeve 6, in this direction, the push rod 7 cannot be actively moved, and under the linkage rotation of the synchronous shaft 4 with the driving shaft 9, the synchronous shaft 4 and the sleeve 6 which cannot rotate are screw-transmitted, thereby driving the ring sleeve 5 and the push rod 7 to move towards the direction close to the reduction gear; when the ring sleeve 5 wants to move away from the reduction gear, the one-way transmission assembly does not hinder the relative rotation between the ring sleeve 5 and the sleeve 6, in this direction, the push rod 7 can be actively moved, which is used to actively operate the push rod 7 to reset to the position away from the reduction gear when the driving shaft 9 is stationary, and in this process, the sleeve 6 is screw-transmitted with the stationary synchronous shaft 4, and the sleeve 6 can rotate relative to the ring sleeve 5.In actual use, in the sewing process of the sling, the corner separation line of the base cloth is taken as the starting position, and the first sling is sewn at the sewing station. Before sewing, the push rod 7 is pushed into the through slot 8 away from the end of the reduction gear, then the servo system is started, the sewing starts, and the driving shaft 9 starts to rotate, so that the feeding block 3 moves to feed the cloth, at the same time, the synchronous shaft 4 is linked to rotate, in this process, the one-way transmission assembly prevents the relative rotation between the ring sleeve 5 and the sliding sleeve 6, so that the sliding sleeve 6 which cannot rotate and the rotating synchronous shaft 4 are in spiral transmission, driving the ring sleeve 5 and the push rod 7 to move towards the reduction gear, until the push rod 7 moves to the end of the through slot 8 close to the reduction gear, then the above process is linked by the synchronous shaft 4, the reduction gear and the driving shaft 9, the distance of the cloth feeding promoted by the movement of the feeding block 3 is just enough to move the next adjacent corner separation line of the base cloth to the sewing station, thereby realizing automatic length feeding, positioning the four-corner sling conveniently, without the need for workers to concentrate for a long time, reducing the operation difficulty. In addition, before sewing the next sling, the push rod 7 is actively pushed away from the reduction gear, in this direction, the one-way transmission assembly does not prevent the relative rotation between the ring sleeve 5 and the sliding sleeve 6, so that the active movement of the push rod 7 and the static driving shaft 9 and synchronous shaft 4 cause the sliding sleeve 6 and the static synchronous shaft 4 to be in spiral transmission, the sliding sleeve 6 can rotate relative to the ring sleeve 5, and the push rod 7 is actively reset to the end of the through slot 8 away from the reduction gear, so that the four-corner sling is accurately sewn.

[0029] As a preferred technical solution of the embodiment, the outer wall of the synchronous shaft 4 is provided with a spiral groove 11, and the inner wall of the sliding sleeve 6 is provided with a sliding convex 12 in sliding connection with the spiral groove 11. Specifically, when the synchronous shaft 4 rotates and the sliding sleeve 6 does not rotate, the spiral groove 11 rotates with the synchronous shaft 4 to relatively move with the sliding convex 12, triggering the spiral transmission to make the sliding sleeve 6 move axially on the synchronous shaft 4, and when the synchronous shaft 4 does not rotate and the sliding sleeve 6 moves axially on the synchronous shaft 4, the sliding convex 12 slides in the spiral groove 11 to trigger the rotation of the sliding sleeve 6.

[0030] As the preferred technical scheme of the embodiment, the adjusting bolt 28 is threadedly connected in the dial lever 7, the lock pin 29 is arranged at one end of the adjusting bolt 28 close to the ratchet wheel 26, the ratchet wheel 26 is rotatably arranged in the ring sleeve 5, a plurality of pin holes 30 matched with the lock pin 29 are uniformly arranged on the outer wall of the ratchet wheel 26, the other end of the adjusting bolt 28 extends out of the dial lever 7, and specifically, the lock pin 29 is inserted into or separated from the pin hole 30 by rotating the adjusting bolt 28, when the lock pin 29 is inserted into the pin hole 30, the ratchet wheel 26 is fixed relative to the ring sleeve 5, at this time, the one-way transmission assembly is normally used; when the lock pin 29 is separated from the pin hole 30, the ratchet wheel 26 can rotate relative to the ring sleeve 5, at this time, the one-way transmission assembly is disabled, the ring sleeve 5 and the sliding sleeve 6 are completely free to rotate, that is, the rotation number limit of the synchronous shaft 4 is cancelled, the rotation number limit of the driving shaft 9 is cancelled, and the movement limit of the feeding block 3 is cancelled, and the feeding block 3 can be freely fed under the control of workers.

[0031] In another embodiment of the application, the positioning column 13 is movably arranged on the table body 1, the lifting of the positioning column 13 is linked with the axial movement of the ring sleeve 5 on the synchronous shaft 4, specifically, the positioning column 13 extends out of the upper surface of the table body 1 when the ring sleeve 5 moves close to the reduction gear, and the positioning column 13 is retracted into the upper surface of the table body 1 when the ring sleeve 5 moves away from the reduction gear; the positioning column 13 is used for positioning before sewing the lifting belt, specifically, the positioning column 13 is arranged horizontally along the sewing direction, the lifting ring of the lifting belt can be sleeved on the positioning column 13, and the distance between the positioning column 13 and the sewing position is just enough to make the length of the lifting ring of the lifting belt extending out of the base cloth.

[0032] As the preferred technical scheme of the embodiment, the lifting seat 14 connected with the positioning column 13 is movably arranged in the table body 1, one side of the lifting seat 14 is movably connected with the inside of the table body 1, the lower side of the lifting seat 14 is provided with a linkage groove 15, the displacement piece 16 is sleeved on the synchronous shaft 4, the upper end of the displacement piece 16 is provided with the linkage pin 17 movably connected with the linkage groove 15, specifically, the positioning column 13 is fixedly connected with the lifting seat 14 at the end opposite to the sewing direction, and the end corresponding to the sewing direction is not shielded, so that after the lifting ring of the lifting belt is sleeved on the positioning column 13, the lifting ring can automatically slide off the positioning column 13 during the feeding and sewing of the base cloth; the one side of the lifting seat 14 is provided with a protrusion, the table body 1 is provided with a lifting groove matched with the protrusion, the bottom surface of the lifting groove is connected with the protrusion through a spring, so that the lifting seat 14 is automatically kept at the lowest position of the lifting stroke, and when the lifting seat 14 is at the lowest position of the lifting stroke, the positioning column 13 does not protrude from the upper surface of the table body 1; the linkage groove 15 is obliquely arranged, and the lower end is arranged closer to the direction of the speed reducer; the displacement piece 16 only moves axially on the synchronous shaft 4; the displacement piece 16 is arranged on the side of the ring sleeve 5 close to the speed reducer; the displacement piece 16 is pushed by the ring sleeve 5 to move towards the direction close to the speed reducer, so as to drive the linkage pin 17 to relatively slide with the linkage groove 15, and make the lifting seat 14 rise, and conversely, the lifting seat 14 descends under the elastic force.

[0033] However, the lifting of the lifting seat 14 is synchronized with the movement of the ring sleeve 5, which causes the positioning column 13 to descend and block the lifting belt when the lifting ring of the lifting belt has not been separated from the positioning column 13. To solve this problem, the following embodiments are proposed.

[0034] In another embodiment of the application, a delay component is arranged in the table body 1 to prevent the lifting seat 14 from descending from the highest position, and the delay component cancels the obstruction of the lifting seat 14 and is triggered by the movement of the ring sleeve 5 on the synchronous shaft 4. Specifically, the arrangement of the delay component makes the lifting seat 14 not immediately descend under the elastic force when the ring sleeve 5 moves a distance from the end away from the speed reducer to the end close to the speed reducer after the lifting seat 14 is lifted through linkage, and the lifting seat 14 only descends under the elastic force after the lifting ring is separated from the positioning column 13. Thus, the positioning column 13 is reset to descend only after the lifting ring is separated from the positioning column 13.

[0035] As the preferred technical scheme of the embodiment, the time delay assembly comprises a lever 18 elastically connected in the base 1 and a trigger lever 19 slidingly arranged, the upper end of the lever 18 is movably connected with a limiting piece 20, the limiting piece 20 is slidingly arranged in the base 1, the lifting seat 14 is provided with a limiting hole 21 matched with the limiting piece 20, the lower end of the lever 18 corresponds to the trigger lever 19, the trigger lever 19 is movably arranged with a vertical rod 22, the upper end of the vertical rod 22 is provided with a sliding pin 23, the base 1 is provided with a V-shaped groove 24 matched with the sliding pin 23, the lower end of the vertical rod 22 extends into the activity stroke of the ring sleeve 5, specifically, the elastic rotation of the lever 18 makes the upper end of the lever 18 keep the tendency of being close to the lifting seat 14, the limiting piece 20 moves horizontally and moves towards the lifting seat 14 or away from the lifting seat 14, thereby, the limiting piece 20 keeps abutting against the side wall of the lifting seat 14 under the action of the lever 18, and when the limiting hole 21 corresponds to the limiting piece 20, the limiting piece 20 is automatically embedded in the limiting hole 21; when the lifting seat 14 is lifted to the highest position, the limiting hole 21 corresponds to the limiting piece 20, at this time, the positioning column 13 is lifted to extend out of the highest position of the upper surface of the base 1; the trigger lever 19 moves horizontally and the moving direction is consistent with the limiting piece 20; the trigger lever 19 is arranged on the side of the lever 18 away from the lifting seat 14; the vertical rod 22 keeps the tendency of freely descending under the action of gravity, so that the sliding pin 23 is automatically kept at the lowest position in the middle of the V-shaped groove 24, or two symmetrical elastic members are arranged in the V-shaped groove 24 to keep pushing the sliding pin 23 to the lowest position in the middle; when the sliding pin 23 corresponds to the lowest position in the middle of the V-shaped groove 24, the vertical rod 22 is at the lowest height, at this time, the lower end of the vertical rod 22 extends into the activity stroke of the ring sleeve 5, so that the ring sleeve 5 can push the lower end of the vertical rod 22 in both directions during the axial movement, then the vertical rod 22 drives the sliding pin 23 to ascend in the V-shaped groove 24 until the vertical rod 22 is in the activity range of the ring sleeve 5 at the high position, so that the ring sleeve 5 can smoothly pass through the vertical rod 22, and the vertical rod 22 is then freely lowered to reset to the lowest height position.The technical scheme in actual use, ring 5 in mobile close to the reduction gear to push displacement 16, resulting in the lifting seat 14 rises to the highest position, limit piece 20 and limit hole 21 corresponding, limit piece 20 is in the elastic force of lever 18 automatically embedded in limit hole 21, then, ring 5 to away from the reduction gear direction reset process, lifting seat 14 keep being limited to the highest position, and in the reset movement of ring 5, it from the vertical rod 22 close to the reduction gear side push vertical rod 22, vertical rod 22 then drive trigger lever 19 away from lever 18, and vertical rod 22 in the sliding pin 23 and V-shaped groove 24 under the action of rising to meet ring 5 through, then, in the sewing process continues to go down, the sling along the sewing direction feed, the ring is from the positioning column 13, and ring 5 in the synchronous shaft 4 on the axial movement again close to the reduction gear, at this time, ring 5 from the vertical rod 22 away from the reduction gear side push vertical rod 22, vertical rod 22 then drive trigger lever 19 close to lever 18, and then lever 18 drive limit piece 20 from limit hole 21, thus, lifting seat 14 can be elastic descent drive positioning column 13 reset, and vertical rod 22 in the sliding pin 23 and V-shaped groove 24 under the action of rising to meet ring 5 through, thereby, realize the positioning column 13 delay reset down.

[0036] The above only describes certain exemplary embodiments of the present application by way of illustration, without doubt, for those skilled in the art, without departing from the spirit and scope of the present application, the described embodiments can be modified in various ways. Therefore, the above figures and description are illustrative in nature and should not be construed as limiting the scope of the claims of the present application.

Claims

1. A method for sewing the straps of a ton bag, characterized in that, Includes the following steps: S1: Sew a loop of tape around the bottom of the base fabric; S2: Sew a loop of tape around the upper part of the base fabric; S3: Sew a suspender strap along the corner dividing line of the base fabric, leaving a hanging loop at the upper end of the suspender strap and a Velcro strap at the lower end; S4: Sew a bottom strip along the diagonal outwards on the base fabric, leaving a Velcro loop at one end of the bottom strip; S5: Sew the base fabric onto the bottom edge of the base fabric, and overlap and fold the sewn edges at least once; S6: Sew the top fabric onto the top of the base fabric, with the sewn edges overlapping and folded at least once.

2. The method for sewing the slings of a ton bag according to claim 1, characterized in that, S2 and S3 can be performed simultaneously. When the upper loop is sewn onto the base fabric, each time it passes a corner, the suspender strap is inserted into the inside of the upper loop along the corner dividing line of the base fabric and sewn together to secure it.

3. The method for sewing the slings of a ton bag according to claim 1, characterized in that, The Velcro straps are set to be 6-8cm wide and 8-12cm long. The Velcro straps on the suspenders are hook-on, and the Velcro straps on the bottom are looped.

4. A ton bag strap sewing processing equipment, used to produce ton bags according to the ton bag strap sewing method according to any one of claims 1 to 3, comprising a platform (1) and a machine body (2), wherein a reciprocating feed block (3) is provided on the platform (1), characterized in that, Also includes: Synchronous shaft (4) is set inside the platform (1) and is synchronously linked with the feed block (3); The ring sleeve (5) is sleeved outside the synchronous shaft (4), and the inner side is coaxially connected to the sliding sleeve (6) which is screw-driven to the synchronous shaft (4) through a one-way transmission assembly. The lever (7) has one end fixedly connected to the ring (5), and the other end is movably connected through the through slot (8) opened on the side wall of the platform (1).

5. The ton bag strap sewing and processing equipment according to claim 4, characterized in that, The platform (1) is equipped with a drive shaft (9) that drives the feed block (3) to move. The drive shaft (9) is connected to the synchronous shaft (4) through a reduction gear. One end of the drive shaft (9) is equipped with a clutch (10) that is linked to the main shaft of the machine body (2).

6. The ton bag strap sewing and processing equipment according to claim 4, characterized in that, The outer wall of the synchronous shaft (4) is provided with a spiral groove (11), and the inner wall of the sliding sleeve (6) is provided with a sliding protrusion (12) that is slidably connected to the spiral groove (11).

7. The ton bag strap sewing and processing equipment according to claim 4, characterized in that, The platform (1) is equipped with a positioning column (13) that moves up and down. The movement of the positioning column (13) is linked to the axial movement of the ring (5) on the synchronous shaft (4).

8. The ton bag strap sewing and processing equipment according to claim 7, characterized in that, The platform (1) is movably provided with a lifting seat (14) that connects to the positioning column (13). One side of the lifting seat (14) is elastically and movably connected to the inside of the platform (1). A linkage groove (15) is provided on the lower side of the lifting seat (14). A displacement component (16) is sleeved on the synchronous shaft (4). A linkage pin (17) that is movably connected to the linkage groove (15) is provided at the upper end of the displacement component (16).

9. The ton bag strap sewing and processing equipment according to claim 8, characterized in that, The platform (1) is provided with a delay component that prevents the lifting seat (14) from descending from the highest position. The delay component cancels the obstruction to the lifting seat (14) as the ring (5) moves on the synchronous shaft (4).

10. The ton bag strap sewing and processing equipment according to claim 9, characterized in that, The delay component includes a lever (18) that is elastically hinged inside the platform (1) and a trigger rod (19) that is slidably set. The upper end of the lever (18) is movably connected to a limiting member (20), which is slidably set inside the platform (1). The lifting seat (14) is provided with a limiting hole (21) that matches the limiting member (20). The lower end of the lever (18) corresponds to the trigger rod (19). A vertical rod (22) is movably set on the trigger rod (19). A sliding pin (23) is provided at the upper end of the vertical rod (22). A V-groove (24) that matches the sliding pin (23) is provided inside the platform (1). The lower end of the vertical rod (22) extends into the active stroke of the ring (5).

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