A bagging device for pocket springs, a spring string production line and a bagging method

Abstract

The application provides a pocketed spring bagging device, a spring string production line and a bagging method. The pocketed spring bagging device comprises a first sewing module, a second sewing module and a spring clamping and feeding module. The first sewing module comprises a first sewing machine. The first sewing machine is used for sewing cloth in the longitudinal direction to form a cloth bag. The second sewing module is located downstream of the first sewing module. The second sewing module comprises a clamping piece and a second sewing machine. The clamping piece forms an avoiding groove extending in the transverse direction. The two clamping pieces are arranged in the vertical direction. The clamping piece can clamp the cloth between the two clamping pieces. The second sewing machine is used for sewing the cloth in the transverse direction to form independent bag chambers. The second sewing module further comprises a third driving assembly. The third driving assembly is used for driving the clamping piece and the second sewing machine to reciprocate in the longitudinal direction. The spring clamping and feeding module is located upstream of the second sewing module. The spring clamping and feeding module feeds the spring into the cloth bag. The pocketed spring bagging device can improve the production efficiency of the pocketed spring.

Description

Technical Field

[0001] The present application relates to the field of automated production of bagged springs, and in particular to a bagged spring bagging device, a spring string production line, and a bagging method. Background Art

[0002] Pocket springs are widely used in products such as mattresses and sofas. A common method involves connecting multiple pocket springs into a spring string, which is then bonded side by side to form a cushion core. The mainstream method for manufacturing a spring string involves welding non-woven fabric longitudinally into a bag. The compressed springs are then placed into the bag, and the bag is then welded transversely to encapsulate the springs in individual pockets, creating a single pocket spring string.

[0003] The covering material of this type of pocket spring is limited by the welding process and generally uses non-woven fabrics made of polypropylene fibers. It is not possible to use fabrics made of natural fibers such as cotton, linen, wool, and silk. To overcome the above-mentioned shortcomings, related technologies have also proposed solutions for manufacturing sutured pocket springs.

[0004] In the manufacturing plan of stitched pocket springs, the spring generally needs to be flattened vertically and then fed between the upper and lower layers of cloth. The flattened spring is then encapsulated in an independent bag chamber by sewing the cloth longitudinally and transversely. After sewing, the spring in the bag chamber needs to be flipped by toggling it so that the spring turns horizontally and rebounds. This makes the production efficiency of stitched pocket springs low, and it is also easy for the spring to get stuck in the bag and cannot be flipped or flipped incompletely, resulting in a decrease in product yield. Summary of the Invention

[0005] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a bagging device for pocket springs, a spring string production line, and a bagging method. The bagging device for pocket springs can improve the production efficiency of pocket springs.

[0006] According to the pocketed spring bagging device provided in the present application, the first sewing module comprises a first sewing machine arranged at the butt joint of the cloth to sew the cloth in the longitudinal direction to form a cloth bag; the second sewing module is arranged downstream of the first sewing module and comprises a clamping member and a second sewing machine; the clamping member forms an avoiding groove extending in the transverse direction, and two pairs of the clamping members are arranged in the vertical direction; the clamping member can move to clamp the cloth between the two clamping members; the second sewing machine can move in the area defined by the avoiding groove, and is used to sew the cloth in the transverse direction to form an independent bag chamber; the second sewing module further comprises a third driving assembly for driving the clamping member and the second sewing machine to reciprocate in the longitudinal direction, so that the second sewing machine performs the cloth sewing action at the same time when the clamping member clamps and carries the cloth to downstream; the spring clamping and conveying module is arranged upstream of the second sewing module, and is used to extend into the bag opening of the cloth bag; the spring clamping and conveying module can convey and compress the spring in the transverse direction to feed the spring into the cloth bag.

[0007] According to the pocketed spring bagging device provided in the present application, at least the following technical effects are achieved: the first sewing module and the second sewing module are used for sewing, so that the available materials of the cloth are expanded; the spring clamping and conveying module compresses the spring in the transverse direction and conveys the spring, so that the spring is fed into the cloth bag in the posture of the bearing surface facing the transverse direction, and the cloth between adjacent two springs is clamped by using the clamping member, so that the second sewing machine sews in the transverse direction, the steps of flattening the spring before packaging and moving the spring to the transverse direction after packaging are omitted, the spring is prevented from being stuck in the cloth bag during the moving process, and the product quality is improved; the second sewing module sews while pulling the spring string forward, and two groups of the second sewing modules are alternately arranged, so that the production efficiency of the pocketed spring is improved.

[0008] According to some embodiments of the present application, the two pairs of the clamping members can move closer to or away from each other in the vertical direction to clamp or release the cloth; the clamping member comprises a blocking edge extending in the transverse direction, and two pairs of the blocking edges are arranged in the vertical direction; the avoiding groove is formed between the two pairs of the blocking edges; when the two pairs of the clamping members clamp the cloth, the second sewing machine can move in the transverse direction in the avoiding groove to sew the cloth; when the second sewing machine exits the avoiding groove, the two pairs of the clamping members are opened to release the cloth.

[0009] According to some embodiments of the present application, the distance between the outer surfaces of the two pairs of the blocking edges is arranged from wide to narrow in the direction towards the cloth.

[0010] According to some embodiments of the present application, a cross section of the avoidance groove is arranged from wide to narrow along a direction toward the cloth.

[0011] According to some embodiments of the present application, the second sewing module includes a second drive assembly, the second drive assembly includes a second driver, and the second driver is respectively connected to the two pairs of clamping members to simultaneously drive the two clamping members to move vertically relative to each other.

[0012] According to some embodiments of the present application, the second drive assembly is driven by one of the following methods: the second drive assembly includes a first turntable, the first turntable is installed at the output end of the second drive, and the hinge points on both sides of the rotation center of the first turntable are rotatably connected to the two clamping members through two first connecting rods, so that the two clamping members respectively move relative to each other along the second guide rail along with the second slider; the second drive assembly includes a second pulley and a second transmission belt, the two second pulleys are arranged at intervals in the vertical direction, one of the second pulleys is installed at the output end of the second drive, the second transmission belt is wound between the two second pulleys, and the second transmission belt forms a first side and a second side extending between the two second pulleys and moving synchronously in opposite directions, and the two clamping members are respectively connected to the first side and the second side, so that the two clamping members respectively move relative to each other along the second guide rail along with the second slider.

[0013] According to some embodiments of the present application, the second sewing modules are provided in two groups and are arranged opposite to each other in the transverse direction, and the distance between the clamping members of each group when opened up and down is greater than the height of the second sewing machine. When one group of the second sewing modules clamps the fabric and sews while conveying it, the other group of the second sewing modules opens the clamping members and moves back across the previous group of the second sewing modules. In this way, the two groups of the second sewing modules alternately clamp and pull the fabric for sewing.

[0014] According to some embodiments of the present application, the third drive assembly includes a third drive, a third pulley and a third transmission belt, the two third pulleys are arranged at intervals in the longitudinal direction, one of the third pulleys is installed at the output end of the third drive, the third transmission belt is wound between the two third pulleys, and the clamping member and the second sewing machine are connected to the third transmission belt.

[0015] According to some embodiments of the present application, the second sewing module includes a plurality of the second sewing machines and a corresponding number of pairs of the clamping members, and each of the second sewing machines and the corresponding clamping members are arranged sequentially in the longitudinal direction.

[0016] According to some embodiments of the present application, the spring clamping module includes a conveying member, and the two groups of the conveying members are arranged opposite to each other in the transverse direction. A conveying channel for conveying the spring is formed between the two groups of the conveying members. The conveying channel includes a compression section. In the compression section, the spacing between the two groups of the conveying members is set from wide to narrow along the conveying direction of the spring. The compression section is used to compress the spring while conveying. The conveying channel includes a holding section. The holding section is located downstream of the compression section. In the holding section, the two groups of the conveying members are parallel to each other, and the outlet end of the holding section extends into the bag opening of the cloth bag.

[0017] According to some embodiments of the present application, the first sewing machine includes a first hook and a first needle, and the first sewing machine also includes a fifth drive, a third turntable, a main shaft and a first secondary shaft, the third turntable is installed on the first secondary shaft, and the fifth drive is used to drive the main shaft to rotate, thereby driving the first secondary shaft to rotate; the first sewing machine also includes a sixth connecting rod, the eccentric hinge point of the third turntable is connected to a laterally extending fifth guide rail through the sixth connecting rod, the first needle is installed on the fifth guide rail, and the fifth drive is used to drive the first needle to reciprocate in the laterally direction.

[0018] According to some embodiments of the present application, the first sewing machine includes a second secondary shaft, a third cam and a fourth cam, the first crochet needle is installed on the second secondary shaft, the third cam and the fourth cam are installed on the main shaft, the third cam and the fourth cam are respectively connected to the second secondary shaft, the third cam is used to drive the first crochet needle to swing with the vertical axis as the rotation axis, and the fourth cam is used to drive the first crochet needle to move with the vertical axis as the axis.

[0019] According to some embodiments of the present application, the first sewing machine includes a swing arm and a first elastic member, one end of the swing arm is mounted on the second secondary shaft, the torque provided by the first elastic member causes the other end of the swing arm to abut against the outer contour of the third cam, so that the swing arm can swing in response to the radial size change of the third cam; the fourth cam forms a second cam groove, the first sewing machine also includes a push rod, a second elastic member and a sixth guide rail, one end of the push rod is fixedly mounted on the sixth guide rail, the other end of the push rod is embedded in the second cam groove, the force provided by the second elastic member causes the push rod to contact the side wall of the cam groove, so that the push rod can move vertically in response to the axial position change of the second cam groove, and the second secondary shaft is rotatably mounted on the sixth guide rail.

[0020] The spring string production line provided in the present application includes the bagged spring bagging equipment provided in the present application.

[0021] According to the pocket spring bagging method provided by the present application, using the pocket spring bagging device provided by the present application, the pocket spring bagging method includes the following steps: a first sewing module sews the longitudinally conveyed cloth in the longitudinal direction to form a cloth bag with a bag opening; a spring clamping module compresses the spring in the transverse direction and feeds the spring into the bag opening; the clamping member clamps the cloth, pulls the cloth and the spring to be conveyed downstream, and at the same time, a second sewing machine following the movement of the clamping member sews the cloth in the transverse direction to form an independent bag chamber encapsulating the spring; the clamping member and the second sewing machine are reset to perform the next conveying and sewing.

[0022] The spring string production line and bagged spring bagging method provided in this application use the bagged spring bagging equipment of this application, and therefore have the corresponding beneficial effects provided by the bagged spring bagging equipment, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0024] Figure 1 This is a schematic structural diagram of a spring string production line according to an embodiment of the present application;

[0025] Figure 2 This is a schematic diagram of the principle of the second sewing module of the embodiment of the present application clamping and sewing fabric;

[0026] Figure 3 is a structural diagram of a second sewing module according to an embodiment of the present application;

[0027] Figure 4 is a structural diagram of a second sewing module according to an embodiment of the present application;

[0028] Figure 5 It is a structural diagram of the second sewing module of an embodiment of the present application.

[0029] Figure 6 2 is a schematic structural diagram of a bagged spring bagging device according to an embodiment of the present application;

[0030] Figure 7 2 is a schematic structural diagram of a bagged spring bagging device according to an embodiment of the present application;

[0031] Figure 8 2 is a schematic structural diagram of a bagged spring bagging device according to an embodiment of the present application;

[0032] Figure 9 is a structural schematic diagram of a second sewing machine according to an embodiment of the present application;

[0033] Figure 10is a structural schematic diagram of a second sewing machine according to an embodiment of the present application;

[0034] Figure 11 is a schematic structural diagram of a first sewing machine according to an embodiment of the present application;

[0035] Figure 12 It is a structural schematic diagram of the first sewing machine of an embodiment of the present application.

[0036] Reference numerals:

[0037] First sewing module 1000, first sewing machine 1100, first needle 1110, first crochet hook 1120, fifth driver 1131, fourth transmission belt 1132, third turntable 1141, transmission gear 1142, first secondary shaft 1143, sixth connecting rod 1144, fifth guide rail 1151, fifth slider 1152, second secondary shaft 1161, third cam 1162, fourth cam 1163, swing arm 1164, third rolling element 1165, push rod 1166, second elastic member 1167, shaft seat 1168, first elastic member 1169, sixth guide rail 1171, sixth slider 1172,

[0038] Second sewing module 2000, second sewing machine 2100, second needle 2110, second hook 2120, fourth driver 2130, second turntable 2141, second connecting rod 2142, third connecting rod 2143, slide bar 2144, fourth guide rail 2151, fourth slider 2152, first cam 2171, fourth connecting rod 2172, first rolling element 2173, second cam 2181, fifth connecting rod 2182, second rolling element 2183, movable cutter 2191, fifth driver 2192, clamping member 2200, retaining edge 22 10. Avoidance groove 2300, first pulley 2410, first transmission belt 2420, first mounting seat 2510, first guide rail 2520, second driver 2610, first turntable 2620, first connecting rod 2630, second pulley 2640, second transmission belt 2650, second mounting seat 2710, second guide rail 2720, second slider 2730, adapter block 2740, adapter rod 2750, third driver 2810, third pulley 2820, third transmission belt 2830, third mounting seat 2910, third guide rail 2920,

[0039] Fabric folding module 3000,

[0040] Conveying member 4100, conveying channel 4200, compression section 4210, holding section 4220,

[0041] Spring coiling machine 7000, spring transfer device 8000,

[0042] Fabric 9100, spring 9200. DETAILED DESCRIPTION

[0043] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0044] In the description of the present application, it should be understood that descriptions involving orientation, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0045] In the description of this application, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The terms "first" and "second" are used solely to distinguish technical features and are not to be construed as indicating or implying relative importance, or as implicitly specifying the number or order of the technical features indicated.

[0046] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0047] Spring string production lines are used to manufacture pocket spring strings. Using a pocket spring loading device, the springs are placed into cloth bags and sealed. In the sewing method for spring string production, the springs are typically flattened vertically. The flattened springs are then inserted between two layers of fabric and held flat. A sewing machine then sews the fabrics horizontally and vertically, sealing the springs into the bag. After sealing, a shifting mechanism rotates the springs horizontally, allowing them to rebound.

[0048] Because the springs must be flattened and then rebounded through a specialized process during the manufacturing process, the production of spring strings involves numerous steps, resulting in low production efficiency for sewn pocket springs. Furthermore, when the springs are moved, they can easily become stuck in the pocket, preventing them from flipping over or causing them to flip only partially, resulting in a low product yield.

[0049] The following is based on Figure 1 and Figure 2 The application provides a pocketed spring pocketing device and a spring in string production line.

[0050] With reference to Figure 1 The application provides a spring in string production line, which comprises the pocketed spring pocketing device.

[0051] The pocketed spring pocketing device comprises a first sewing module 1000, a second sewing module 2000 and a spring clamping module. The first sewing module 1000 comprises a first sewing machine 1100 arranged at the butt joint of the cloth 9100 to sew the cloth 9100 in the longitudinal direction to form a cloth pocket. The second sewing module 2000 is located downstream of the first sewing module 1000 and comprises a second sewing machine 2100 arranged to sew the cloth 9100 in the transverse direction to form independent pocket chambers. The spring clamping module is located upstream of the second sewing module 2000 and is arranged to extend into the pocket opening of the cloth pocket. The spring clamping module is capable of conveying and compressing the spring 9200 in the transverse direction to feed the spring 9200 into the cloth pocket.

[0052] With reference to Figure 2 The second sewing module 2000 further comprises a clamping member 2200 formed with a transversely extending avoiding slot 2300. The two clamping members 2200 are arranged vertically spaced apart. The clamping member 2200 is movable to clamp the cloth 9100 located between the two clamping members 2200. The second sewing machine 2100 is movable within the area defined by the avoiding slot 2300.

[0053] It can be understood that, in the present application, the longitudinal direction refers to the conveying direction of the cloth 9100, i.e. the length direction of the cloth 9100 and the spring in string. The transverse direction is perpendicular to the longitudinal direction and refers to the width direction of the cloth and the direction in which the compressed surface of the spring 9200 in the spring in string faces. The vertical direction refers to the direction perpendicular to the transverse and longitudinal directions.

[0054] In the conventional layout of the spring in string production line, the vertical direction corresponds to the vertical direction of the absolute coordinate system, i.e. the Z direction. However, it is not excluded that, in other possible layouts, the longitudinal direction, the transverse direction and the vertical direction correspond to the absolute coordinate system in other ways.

[0055] On the one hand, the bagged spring feeding device uses the first sewing module 1000 and the second sewing module 2000 for sewing, thereby expanding the available material of the cloth 9100; on the other hand, the spring clamping module compresses and conveys the spring 9200 in the transverse direction, so that the spring 9200 is fed into the cloth bag with the pressure-bearing surface facing the transverse direction and is packaged, thereby eliminating the steps of flattening the spring 9200 before packaging and poking the spring 9200 to the transverse direction after packaging, and thereby improving the production efficiency of the bagged spring. The spring string production line has the beneficial effects provided by the bagged spring feeding device.

[0056] It can be understood that the second sewing module 2000 further comprises a first driving assembly, and the first driving assembly comprises a first driver for driving the second sewing machine 2100 to reciprocate in the transverse direction, thereby realizing transverse sewing. For example, referring to Figure 3 The first driving assembly comprises two first pulleys 2410 arranged in the transverse direction and a first transmission belt 2420 wound around the first pulleys 2410, and the second sewing machine 2100 is connected to the first transmission belt 2420. The first driver (not shown in the figure) is connected to the first pulleys 2410 and drives the second sewing machine 2100 to move.

[0057] The first sewing module 1000 can adopt an embodiment of sewing two pieces of cloth 9100 to form a cloth bag, or an embodiment of sewing a piece of cloth 9100 that has been folded in half to form a cloth bag. For the latter embodiment, referring to Figure 1 The bagged spring feeding device can comprise a cloth folding module 3000 located upstream of the first sewing module 1000. The cloth 9100 is fed into the first sewing module 1000 through the cloth folding module 3000, and the cloth folding module 3000 folds the cloth 9100 in half with the two side edges in contact, so that the first sewing module 1000 can sew.

[0058] In the related art, because the spring 9200 is flattened, the distance between the two layers of cloth 9100 in the vertical direction is small, and the second sewing machine 2100 can sew without the clamping piece 2200 clamping the cloth 9100, but in this application, because the spring 9200 is fed in a manner facing the transverse direction, the spring 9200 will spread the two layers of cloth 9100 apart. By adding the clamping piece 2200 to clamp the cloth 9100, the distance between the two layers of cloth 9100 in the area where the avoidance groove 2300 is located can be reduced, thereby forming an interval suitable for sewing on the cloth 9100, so that the second sewing machine 2100 can sew the cloth 9100 in the interval, thereby ensuring the realizability of the bagged spring feeding device.

[0059] Here, "clamping" does not necessarily require the clamping member 2200 to completely clamp the fabric 9100, bringing the two vertical layers of fabric 9100 into contact. It is sufficient for the clamping member 2200 to reduce the distance between the two layers of fabric to within a distance that allows the second sewing machine 2100 to sew. The advantage of fully clamping the fabric 9100 is that it ensures that the fabric 9100 and the clamping member 2200 remain relatively stationary during the sewing process, improving sewing quality. During clamping, the second sewing machine 2100 sews. After sewing is completed, the clamping member 2200 releases the fabric 9100 to prevent it from being transported. The clamping member 2200 can switch between clamping and releasing in various ways.

[0060] For example, in some embodiments, the two clamping members 2200 can reciprocate in the horizontal direction to clamp the fabric 9100 or release the fabric 9100 by shifting away from the fabric 9100. Alternatively, in other embodiments, the two clamping members 2200 can move vertically toward or away from each other to clamp or release the fabric 9100. When the two clamping members 2200 are combined to clamp the fabric 9100, the second sewing machine 2100 can move horizontally within the avoidance groove 2300 to sew the fabric 9100. After the second sewing machine 2100 exits the avoidance groove 2300, the two clamping members 2200 open to release the fabric 9100. The second sewing module 2000 can include a second drive assembly, which includes a second driver 2610. The second driver 2610 drives the clamping members 2200.

[0061] Since the fabric 9100 has been longitudinally sewn into a bag in the first sewing module 1000, meaning the two vertical layers of fabric 9100 are essentially connected together, it is necessary to ensure that the paired clamping members 2200 clamp the fabric 9100 as symmetrically as possible during transverse sewing to avoid wrinkles. To achieve this, in some embodiments, a second driver 2610 is connected to each of the two paired clamping members 2200, capable of simultaneously driving the two clamping members 2200 in vertical relative motion. The second driver 2610 mechanically connects the two clamping members 2200 simultaneously, thereby ensuring synchronized movement of the clamping members 2200.

[0062] Figure 3 、 Figure 4 and Figure 5 Two mechanical connection modes between the second driver 2610 and the clamping member 2200 are exemplarily shown.

[0063] Reference Figure 3 and Figure 4In some embodiments, the second drive assembly includes a first rotary disk 2620 mounted at the output end of the second driver 2610. Hinge points symmetrically located on either side of the rotation center of the first rotary disk 2620 are rotatably connected to the two clamping members 2200 via two first connecting rods 2630. In other words, a slider-crank mechanism is formed between the first rotary disk 2620, the first connecting rods 2630, and the clamping members 2200, thereby converting the rotation of the first rotary disk 2620 into vertical movement of the clamping members 2200.

[0064] The two clamping members 2200 can each move along the second guide rail 2720 along with the second slider 2730, making movement smoother. Specifically, the second sewing module 2000 also includes second mounting bases 2710, 2720, and 2730. The second guide rail 2720 is mounted on the second mounting base 2710. The second guide rail 2720 extends vertically. The two clamping members 2200 are respectively mounted on the second guide rail 2720 via two second sliders 2730. The two first connecting rods 2630 are respectively connected to the two second sliders 2730. Because the connection points of the two first connecting rods 2630 and the first turntable 2620 are symmetrical, when the first turntable 2620 rotates, the speeds of the two connection points are the same in magnitude and opposite in direction, thereby achieving synchronous movement of the clamping members 2200. The second sewing module 2000 also includes a first mounting seat 2510 and a first guide rail 2520. The first guide rail 2520 extends laterally. The first mounting seat 2510 is mounted on the second mounting seat 2710. The first guide rail 2520 is mounted on the first mounting seat 2510. The second sewing machine 2100 is mounted on the first guide rail 2520.

[0065] The two clamping parts 2200 can share a second guide rail 2720, or use different second guide rails 2720. In order to stagger the movement trajectories of the two first connecting rods 2630, the second sewing module 2000 also includes a transfer block 2740 and a transfer rod 2750. The transfer block 2740 is also installed on the second guide rail 2720. The transfer rod 2750 is connected between the transfer block 2740 and the corresponding second slider 2730. The first connecting rod 2630 is indirectly connected to the second slider 2730 through the transfer block 2740, thereby changing the layout position of the first connecting rod 2630 and avoiding interference.

[0066] Of course, other methods commonly used in related technologies such as guide sleeves and guide pillars can also be used to guide the movement of the clamping member 2200, which will not be described in detail here.

[0067] Reference Figure 5In some other embodiments, the second drive assembly includes a second pulley 2640 and a second transmission belt 2650, the two second pulleys 2640 are arranged vertically at intervals, one of the second pulleys 2640 is installed at the output end of the second driver 2610, and the second transmission belt 2650 is wound between the two second pulleys 2640. The second transmission belt 2650 forms a first side and a second side extending between the two second pulleys 2640 and moving synchronously in opposite directions, and the two clamping members 2200 are respectively connected to the first side and the second side.

[0068] Specifically, the first side is connected to one of the sliders 2730 , and the second side is connected to the adapter block 2740 , which is further connected to the other slider 2730 .

[0069] Of course, the second sewing module 2000 can also drive the two clamping members 2200 to move synchronously through other feasible solutions. The movement of the clamping member 2200 is not limited to moving. For example, the clamping member 2200 can also clamp or release the cloth 9100 in a swinging manner.

[0070] Continuing to introduce the clamping member 2200, refer to Figure 2 as well as Figure 3 The clamping member 2200 includes a rib 2210 , which extends in the transverse direction. The two ribs 2210 are arranged at intervals, and an avoidance groove 2300 is formed between the two ribs 2210 .

[0071] exist Figure 2 In the embodiment, the distance between the outer surfaces of the two retaining edges 2210 is set from wide to narrow along the direction toward the cloth 9100. Correspondingly, the cross section of the avoidance groove 2300 is also set from wide to narrow along the direction toward the cloth 9100 (for example, Figure 2 This design reduces the size of the cloth 9100 pressed by the clamping piece 2200, preventing the clamping piece 2200 from pushing the spring 9200 in the cloth bag out of position during horizontal stitching. At the same time, the design from wide to narrow expands the accommodating space of the avoidance groove 2300, avoiding interference between the second sewing machine 2100 and the clamping piece 2200.

[0072] Reference Figure 6 、 Figure 7 as well as Figure 8 The second sewing module 2000 may be provided with one or more second sewing machines 2100. In the case of multiple second sewing machines 2100, each second sewing machine 2100 is arranged in sequence in the longitudinal direction, so as to perform transverse sewing at different positions. Correspondingly, the second sewing module 2000 also includes a plurality of pairs of clamping members 2200 corresponding to the number of second sewing machines 2100.

[0073] In some embodiments, the second sewing module 2000 includes a third drive assembly for driving the clamping member 2200 and the second sewing machine 2100 to reciprocate in the longitudinal direction, so that the clamping member 2200 clamps the fabric 9100 while simultaneously conveying the fabric 9100 downstream. In other words, the second sewing module 2000 integrates the functions of sewing and conveying, thereby simplifying the structure of the pocketed spring pocketing device.

[0074] It will be appreciated that stitching and conveying can be performed in parallel or sequentially. In the parallel approach, the clamping member 2200 clamps the fabric 9100 and conveys it downstream, while the second sewing machine 2100 simultaneously follows the clamping member 2200 in the longitudinal direction and moves horizontally to sew the fabric. The clamping member 2200 releases the fabric 9100 at the end of its travel and returns to the starting point for the next stitching and conveying operation.

[0075] The present application provides a method for placing pocket springs in a bag corresponding to the parallel operation scheme, and the method for placing pocket springs in a bag comprises the following steps:

[0076] The first sewing module 1000 sews the longitudinally conveyed cloth 9100 in the longitudinal direction to form a cloth bag with a bag opening;

[0077] The spring clamping module compresses the spring 9200 in the transverse direction and delivers the spring 9200 into the bag opening;

[0078] The clamping member 2200 clamps the fabric 9100, pulling the fabric 9100 and the spring 9200 to be transported downstream, while the second sewing machine 2100 following the movement of the clamping member 2200 sews the fabric 9100 in the transverse direction to form an independent bag chamber encapsulating the spring 9200;

[0079] The clamping member 2200 and the second sewing machine 2100 are reset to carry out the next feeding and sewing.

[0080] In order to further improve the efficiency of conveying the cloth 9100, two or more groups of second sewing modules 2000 may be provided, and each group of second sewing modules 2000 conveys the cloth 9100 alternately, so that the cloth 9100 is conveyed continuously and uninterruptedly downstream.

[0081] The groups of second sewing modules 2000 may be arranged in various ways.

[0082] Taking two sets of second sewing modules 2000 as an example, Figure 7 as well as Figure 8In the embodiment, the two sets of second sewing modules 2000 are arranged opposite each other in the transverse direction. In this case, the travel of the clamping members 2200 of the two sets of second sewing modules 2000 at least partially overlaps. Therefore, the second sewing modules 2000 need to be set so that the clamping members 2200 of one set allow the clamping members 2200 of the other set and the second sewing machine 2100 to pass over in the longitudinal direction when releasing the fabric 9100. For example, the distance between the clamping members 2200 of each set when they are opened up and down can be greater than the height of the second sewing machine 2100. When one set of the second sewing modules 2000 clamps the fabric 9100 and sews it while feeding it, the other set of the second sewing modules 2000 opens the clamping members 2200 (that is, releases the fabric 9100) and moves back across the previous set of second sewing modules. In this way, the two sets of second sewing modules alternately clamp and pull the fabric 9100 to sew. In order to avoid interference, the third driving assemblies of the two groups of second sewing modules 2000 are arranged on both sides of the conveying route of the fabric 9100 in the horizontal direction.

[0083] Alternatively, in another embodiment, the two groups of second sewing modules 2000 are arranged longitudinally in sequence. In this case, the travels of the clamping members 2200 of the two groups of second sewing modules 2000 do not overlap, and the portion to be sewn on the fabric 9100 is divided into a plurality of alternating first and second sections. The two groups of second sewing modules 2000 are used to sew the first and second sections, respectively. When the first group of second sewing modules 2000 clamps the first section of the fabric 9100 while conveying and sewing, the second group of second sewing modules 2000 releases the second section of the fabric 9100 and moves back; when the second group of second sewing modules 2000 clamps the second section of the fabric 9100 while conveying and sewing, the first group of second sewing modules 2000 releases the first section of the fabric 9100 and moves back. In this way, the two groups of second sewing modules alternately clamp and pull the fabric 9100 to sew.

[0084] The third driving assembly can drive the clamping member 2200 to move in different ways, for example, Figure 4 The third drive assembly includes a third driver 2810, a third pulley 2820 and a third transmission belt 2830. The two third pulleys 2820 are arranged at intervals in the longitudinal direction. One of the third pulleys 2820 is installed at the output end of the third driver 2810. The third transmission belt 2830 is wound between the two third pulleys 2820. The clamping member 2200 and the second sewing machine 2100 are connected to the third transmission belt 2830.

[0085] Specifically, the second sewing module 2000 may include a third mounting seat 2910 and a third guide rail 2920, the third guide rail 2920 is installed on the third mounting seat 2910, the third guide rail 2920 extends in the longitudinal direction, the second mounting seat 2710 is installed on the third guide rail 2920, and the third transmission belt 2830 indirectly connects the clamping member 2200 and the second sewing machine 2100 through the second mounting seat 2710.

[0086] In addition, a linear motor can also be used as the third driver 2810. The third driver 2810 is installed on the third mounting seat 2910, and the second mounting seat 2710 is directly installed on the mover of the linear motor, so that the third driver 2810 has both bearing and driving functions.

[0087] Reference Figures 6 to 8 In some embodiments, the spring clamping module includes a conveying member 4100, and the two groups of conveying members 4100 are arranged opposite to each other in the transverse direction. A conveying channel 4200 for conveying the spring 9200 is formed between the two groups of conveying members 4100. The conveying channel 4200 includes a compression section 4210. In the compression section 4210, the spacing between the two groups of conveying members 4100 is set from wide to narrow along the conveying direction of the spring 9200. The compression section 4210 is used to compress the spring 9200 while conveying.

[0088] The conveying channel 4200 also includes a holding section 4220, which is located downstream of the compression section 4210. Within the holding section 4220, the two sets of conveying members 4100 are parallel to each other, and the outlet end of the holding section 4220 extends into the opening of the cloth bag. In other words, the first sewing machine 1100 is located upstream of the outlet end of the holding section 4220. The first sewing machine 1100 first longitudinally sews the cloth bag to form it, and then releases the spring 9200 from the conveying channel 4200.

[0089] The specific structure of the spring clamping module can be referred to the relevant technology in this field and will not be repeated here.

[0090] It can be understood that the first sewing machine 1100 includes a first needle 1110 and a first crochet needle 1120, and longitudinal sewing is achieved through the movement of the first needle 1110 and the first crochet needle 1120; the second sewing machine 2100 includes a second needle 2110 and a second crochet needle 2120, and transverse sewing is achieved through the movement of the second needle 2110 and the second crochet needle 2120.

[0091] The second sewing machine 2100 may include a fourth driver 2130 and a second turntable 2141. The fourth driver 2130 is used to drive the second turntable 2141 to rotate, and the second turntable 2141 is used to drive the second needle 2110 to move in the vertical direction. Figure 9 and Figure 10The second turntable 2141 is mounted on the output shaft of the fourth driver 2130. The second sewing machine 2100 further includes a second connecting rod 2142, which is hingedly mounted on the housing (i.e. Figure 9 The part indicated by the dotted line in the figure, the eccentric hinge point of the second turntable 2141 is connected to one end of the second link 2142 through the third link 2143, and the other end of the second link 2142 is movably provided with a sliding rod 2144, and the sliding rod 2144 is slidingly connected to the second link 2142, and the other end of the sliding rod 2144 is connected to the hinge point of the fourth guide rail 2151, and the second needle 2110 is installed on the fourth guide rail 2151.

[0092] In addition, the second turntable 2141 and the second connecting rod 2142 can be connected by a sliding rod 2144, and the second connecting rod 2142 and the fourth guide rail 2151 can be connected by a third connecting rod 2143. As long as sufficient freedom of movement can be provided and over-positioning can be avoided, no limitation is made here.

[0093] The second connecting rod 2142 acts as a lever. The rotation of the second turntable 2141 causes the second connecting rod 2142 to swing longitudinally, thereby achieving reciprocating motion of the second needle 2110. The fourth slide 2152 of the second sewing machine 2100 is mounted on the housing. The fourth guide rail 2151 is mounted on the fourth slide 2152. The fourth guide rail 2151 extends vertically to guide and limit the motion of the second needle 2110.

[0094] The second sewing machine 2100 can realize the movement of the second crochet needle 2120 through the first cam 2171 and the second cam 2181. The first cam 2171 and the second cam 2181 are installed on the output shaft of the fourth driver 2130. The first cam 2171 and the second cam 2181 are respectively connected to the second crochet needle 2120. The first cam 2171 is used to drive the second crochet needle 2120 to swing with the vertical axis as the rotation axis, and the second cam 2181 is used to drive the second crochet needle 2120 to swing with the longitudinal axis as the rotation axis. The fourth driver 2130 drives the second needle 2110 and the second crochet needle 2120 to move at the same time, thereby ensuring the stable linkage of the second needle 2110 and the second crochet needle 2120.

[0095] During sewing, first the second needle 2110 carries the suture down and passes the suture through the fabric 910. The second crochet hook 2120 swings with the longitudinal direction as the axis and hooks the suture. At the same time, the second crochet hook 2120 swings with the vertical direction as the axis to pull the suture apart to form a circular coil. Next, the second needle 2110 rises and the second sewing machine moves horizontally to the next needle position. Then the second needle 2110 descends and the second crochet hook 2120 swings in the opposite direction. During the process, the second needle 2110 inserts into the coil and then the coil detaches from the second crochet hook 2120, and the current needle position is sewn. Then the second needle 2110 continues to descend and the second crochet hook 2120 swings again to hook the thread and perform the next action cycle.

[0096] The first cam 2171, the second cam 2181 and the second hook 2120 can be connected in different ways, for example, Figure 9 and Figure 10 The second sewing machine 2100 includes a fourth connecting rod 2172 and a fifth connecting rod 2182. The fourth connecting rod 2172 is hingedly mounted on the casing. One end of the fourth connecting rod 2172 is connected to the first cam 2171 through the first rolling body 2173. The other end of the fourth connecting rod 2172 is hingedly mounted on the second crochet needle 2120. One end of the fifth connecting rod 2182 is connected to the second cam 2181 through the second rolling body 2183. The other end of the fifth connecting rod 2182 is connected to the hinge point of the second crochet needle 2120.

[0097] It is understandable that, referring to Figure 9 The first rolling element 2173 and the second rolling element 2183 may be rollers. The first rolling element 2173 contacts the outer contour of the first cam 2171 to respond to radial dimensional changes of the first cam 2171. The second cam 2181 forms a cam groove. The second rolling element 2183 is embedded in the cam groove and contacts the sidewall of the cam groove to respond to axial position changes of the cam groove. Of course, the first cam 2171 and the second cam 2181 may also be connected to the first rolling element 2173 and the second rolling element 2183 by other methods commonly used in the relevant art.

[0098] The second sewing machine 2100 also includes a movable cutter 2191 and a fifth driver 2192. The movable cutter 2191 and the fifth driver 2192 are installed on the fourth connecting rod 2172 (that is, they can swing along with the fourth connecting rod 2172). The fifth driver 2192 can drive the movable cutter 2191 to move horizontally to cut the suture after the suturing is completed.

[0099] The first sewing machine 1100 may include a fifth driver 1131 and a third turntable 1141 . The fifth driver 1131 is used to drive the third turntable 1141 to rotate, and the third turntable 1141 is used to drive the first needle 1110 to reciprocate in the lateral direction.

[0100] For example, the fifth driver 1131 can drive the main shaft to rotate through a belt transmission, and the main shaft can then drive the third turntable 1141 through a gear transmission. Figure 11 and Figure 12 The first sewing machine 1100 further includes a fourth pulley, a fourth transmission belt 1132, a transmission gear 1142, and a first countershaft 1143. The main shaft and the first countershaft 1143 extend vertically. The third turntable 1141 is mounted on the first countershaft 1143. The output shaft of the fifth driver 1131 is in transmission connection with the main shaft via the fourth pulley and the fourth transmission belt 1132. The main shaft is in transmission connection with the first countershaft 1143 via the transmission gear 1142. The first sewing machine 1100 further includes a sixth connecting rod 1144. The eccentric hinge point of the third turntable 1141 is connected to the fifth guide rail 1151 via the sixth connecting rod 1144. The first needle 1110 is mounted on the fifth guide rail 1151.

[0101] The rotation of the fifth driver 1131 drives the third turntable 1141 to rotate with the vertical axis, thereby realizing the reciprocating motion of the first needle 1110. The fifth slider 1152 of the first sewing machine 1100 is installed in the housing (that is, Figure 11 On the part indicated by the dotted line), the fifth guide rail 1151 is installed on the fifth slider 1152, and the fifth guide rail 1151 extends laterally to guide and limit the movement of the first needle 1110.

[0102] On this basis, the first sewing machine 1100 may further include a second secondary shaft 1161, on which the first crochet needle 1120 is mounted, and the fifth driver 1131 realizes the movement of the first crochet needle 1120 through the transmission relationship between the main shaft and the second secondary shaft 1161. Due to the coupling relationship between the first secondary shaft 1143 and the second secondary shaft 1161, the first needle 1110 and the first crochet needle 1120 are stably linked.

[0103] For example, referring to Figure 11 and Figure 12 The first sewing machine 1100 includes a third cam 1162 and a fourth cam 1163, which are installed on the main shaft. The third cam 1162 and the fourth cam 1163 are respectively connected to the second secondary shaft 1161. The third cam 1162 is used to drive the first crochet needle 1120 to swing with the vertical axis, and the fourth cam 1163 is used to drive the first crochet needle 1120 to move with the vertical axis.

[0104] The first crochet needle 1120 is located vertically on the side of the first needle 1110 away from the spring 9200, and is slightly downstream of the first needle 1110 in the longitudinal direction. When sewing, first the first needle 1110 carries the suture and pierces the fabric 9100. The first crochet needle 1120 swings to hook the suture and at the same time moves vertically to pull the suture apart to form a loop; then the first needle 1110 is pulled out; when the first needle 1110 pierces the fabric 9100 at the next needle position, it passes through the loop, and then the first crochet needle 1120 reverses and resets to disengage the loop, and sews the current needle position; then the first crochet needle 1120 swings again to hook the thread and performs the next action cycle.

[0105] The third cam 1162 and the fourth cam 1163 can be connected to the second auxiliary shaft 1161 in different ways. Figure 11 and Figure 12 The first sewing machine 1100 includes a swing arm 1164 and a first elastic member 1169. One end of the swing arm 1164 is mounted on the second secondary shaft 1161. The torque provided by the first elastic member 1169 causes the other end of the swing arm 1164 to abut against the outer contour of the third cam 1162, causing the swing arm 1164 to swing in response to radial dimensional changes of the third cam 1162. A third rolling element 1165 may be provided at the end of the swing arm 1164 that contacts the third cam 1162 to reduce frictional resistance.

[0106] The fourth cam 1163 forms a second cam groove. The first sewing machine 1100 also includes a push rod 1166, a second elastic member 1167 and a sixth guide rail 1171. One end of the push rod 1166 is fixedly mounted on the sixth guide rail 1171, and the other end of the push rod 1166 is embedded in the second cam groove. The force provided by the second elastic member 1167 causes the push rod 1166 to be in close contact with the side wall of the second cam groove, so that the push rod 1166 moves vertically in response to the axial position change of the second cam groove. The second sub-shaft 1161 is rotatably mounted on the sixth guide rail 1171 through the shaft seat 1168, so that the push rod 1166 can drive the second sub-shaft 1161 to move with the vertical axis.

[0107] The sixth slider 1172 of the first sewing machine 1100 is mounted on the housing, and the sixth guide rail 1171 is mounted on the sixth slider 1172. The sixth guide rail 1171 extends vertically to guide and limit the movement of the second secondary shaft 1161. A fourth rolling element may be provided on the end of the push rod 1166 that contacts the fourth cam 1163 to reduce frictional resistance.

[0108] Back to Figure 1In some embodiments, the spring string production line further comprises a spring winding machine 7000 for winding the steel wire into springs 9200 and a spring transfer device 8000 for receiving the springs 9200 from the spring winding machine and transporting the springs to the spring clamping module.

[0109] The specific structure of the spring winding machine 7000 and the spring transfer device 8000 can refer to the related technology in the art, which will not be described here.

[0110] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0111] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A bag spring bagging device, characterized in that: include: a first sewing module, the first sewing module comprising a first sewing machine, the first sewing machine being configured to be disposed at a joint of the cloths to sew the cloths in a longitudinal direction to form a cloth bag; a second sewing module, the second sewing module being located downstream of the first sewing module, the second sewing module comprising a clamping member and a second sewing machine, the clamping member forming an avoidance groove extending in the transverse direction, the two clamping members being arranged in a pair at intervals in the vertical direction, the clamping member being movable to clamp the fabric between the two clamping members, the second sewing machine being movable within an area defined by the avoidance groove, the second sewing machine being configured to sew the fabric in the transverse direction to form an independent bag chamber, the second sewing module further comprising a third driving assembly, the third driving assembly being configured to drive the clamping member and the second sewing machine to reciprocate in the longitudinal direction, so that the second sewing machine simultaneously sews the fabric while the clamping member clamps and drives the fabric to be transported downstream; a spring clamping module, the spring clamping module being located upstream of the second sewing module, the spring clamping module being configured to extend into the opening of the cloth bag, the spring clamping module being capable of conveying and compressing the spring in the transverse direction to convey the spring into the cloth bag; The second sewing module includes a second drive assembly, the second drive assembly includes a second driver, and the second driver is respectively connected to the two clamping members in a pair to simultaneously drive the two clamping members to move vertically relative to each other; The second driving component is driven by one of the following methods: The second drive assembly includes a first turntable, which is mounted on the output end of the second driver. Hinge points on both sides of the rotation center of the first turntable are rotatably connected to the two clamping members via two first connecting rods, so that the two clamping members move relative to each other along the second guide rail along with the second slider. The second drive assembly includes a second pulley and a second transmission belt, the two second pulleys are arranged at intervals in the vertical direction, one of the second pulleys is installed at the output end of the second drive, the second transmission belt is wound between the two second pulleys, and the second transmission belt forms a first side and a second side extending between the two second pulleys and moving synchronously in opposite directions, and the two clamping members are respectively connected to the first side and the second side, so that the two clamping members move relative to each other along the second guide rail together with the second slider.

2. The pocket spring bagging device according to claim 1, characterized in that: The two paired clamping members can move closer to or farther away from each other in the vertical direction to clamp or release the fabric; the clamping members include a rib extending in the transverse direction, the two ribs being arranged at intervals, and the avoidance groove being formed between the two ribs; when the two clamping members are combined to clamp the fabric, the second sewing machine can move laterally in the avoidance groove to sew the fabric, and when the second sewing machine exits the avoidance groove, the two clamping members open to release the fabric.

3. The pocket spring pocketing device according to claim 2, characterized in that: The distance between the outer surfaces of the two ribs is set from wide to narrow along the direction toward the cloth.

4. The pocket spring pocketing device according to claim 2, characterized in that: The cross section of the avoidance groove is arranged from wide to narrow along the direction toward the cloth.

5. The pocket spring pocketing device according to claim 1, characterized in that: The second sewing modules are provided in two groups and are arranged opposite to each other in the transverse direction. The distance between the clamping members of each group when opened up and down is greater than the height of the second sewing machine. When one group of the second sewing modules clamps the fabric while conveying and sewing, the other group of the second sewing modules opens the clamping members and moves back across the previous group of the second sewing modules. In this way, the two groups of the second sewing modules alternately clamp and pull the fabric for sewing.

6. The pocket spring pocketing device according to claim 1, characterized in that: The third drive assembly includes a third driver, a third pulley and a third transmission belt. The two third pulleys are arranged at intervals in the longitudinal direction, one of the third pulleys is installed at the output end of the third driver, and the third transmission belt is wound between the two third pulleys. The clamping member and the second sewing machine are connected to the third transmission belt.

7. The pocket spring pocketing device according to claim 1, characterized in that: The second sewing module includes a plurality of second sewing machines and a corresponding number of pairs of clamping members, and each of the second sewing machines and the corresponding clamping members are arranged sequentially in the longitudinal direction.

8. The pocket spring pocketing device according to claim 1, characterized in that: The spring clamping module includes a conveying member, and the two groups of conveying members are arranged opposite to each other in the transverse direction. A conveying channel for conveying the spring is formed between the two groups of conveying members. The conveying channel includes a compression section. In the compression section, the spacing between the two groups of conveying members is set from wide to narrow along the conveying direction of the spring. The compression section is used to compress the spring while conveying. The conveying channel includes a holding section. The holding section is located downstream of the compression section. In the holding section, the two groups of conveying members are parallel to each other, and the outlet end of the holding section extends into the bag opening of the cloth bag.

9. The pocket spring pocketing device according to claim 1, characterized in that: The first sewing machine includes a first hook and a first needle. The first sewing machine also includes a fifth drive, a third turntable, a main shaft and a first secondary shaft. The third turntable is installed on the first secondary shaft. The fifth drive is used to drive the main shaft to rotate, and then drive the first secondary shaft to rotate; the first sewing machine also includes a sixth connecting rod. The eccentric hinge point of the third turntable is connected to a laterally extending fifth guide rail through the sixth connecting rod. The first needle is installed on the fifth guide rail. The fifth drive is used to drive the first needle to reciprocate in the laterally direction.

10. The pocket spring pocketing device according to claim 9, characterized in that: The first sewing machine includes a second secondary shaft, a third cam and a fourth cam, the first crochet needle is installed on the second secondary shaft, the third cam and the fourth cam are installed on the main shaft, the third cam and the fourth cam are respectively connected to the second secondary shaft, the third cam is used to drive the first crochet needle to swing with the vertical axis as the rotation axis, and the fourth cam is used to drive the first crochet needle to move with the vertical axis as the axis.

11. The pocket spring pocketing device according to claim 10, characterized in that: The first sewing machine includes a swing arm and a first elastic member, one end of the swing arm is mounted on the second secondary shaft, the torque provided by the first elastic member causes the other end of the swing arm to abut against the outer contour of the third cam, so that the swing arm can swing in response to the radial size change of the third cam; the fourth cam forms a second cam groove, the first sewing machine also includes a push rod, a second elastic member and a sixth guide rail, one end of the push rod is fixedly mounted on the sixth guide rail, the other end of the push rod is embedded in the second cam groove, the force provided by the second elastic member causes the push rod to contact the side wall of the cam groove, so that the push rod can move vertically in response to the axial position change of the second cam groove, and the second secondary shaft is rotatably mounted on the sixth guide rail.

12. A spring string production line, characterized in that: The spring string production line comprises the pocket spring pocketing device according to any one of claims 1 to 11.

13. A method for bagging a bagged spring, characterized in that: The bagged spring placing method uses the bagged spring placing device according to any one of claims 1 to 11, and the bagged spring placing method comprises the following steps: The first sewing module sews the longitudinally conveyed cloth in the longitudinal direction to form a cloth bag with a bag opening; The spring clamping module compresses the spring in the transverse direction and sends the spring into the bag opening; The clamping member clamps the fabric, pulling the fabric and the spring to be transported downstream, while a second sewing machine following the movement of the clamping member sews the fabric in a transverse direction to form an independent bag chamber encapsulating the spring; The clamping member and the second sewing machine are reset to carry out the next conveying and sewing.

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