Bagged spring and manufacturing equipment

Abstract

The utility model provides a bagged spring and manufacturing equipment, the bagged spring comprises cloth, springs and sewing threads, the springs are arranged between two layers of cloth at intervals in the longitudinal direction, the sewing threads sew the two layers of cloth, the sewing threads are continuous and comprise longitudinal sections and transverse sections which are alternately arranged, the longitudinal sections sew the edges of the cloth in the longitudinal direction, and the transverse sections sew the edges of the cloth in the transverse direction. The transverse section extends in the transverse direction to separate two adjacent springs. The sewing thread of the bagged spring string is provided with the longitudinal sections and the transverse sections which are alternated and continuous, so that a longitudinal sewing device and a transverse sewing device do not need to be arranged separately during sewing, when the cloth is conveyed to the downstream, the sewing device sews to form the longitudinal sections, and when the cloth stops, the sewing device sews to form the transverse sections. The bagged spring string can be made of two layers of folded cloth and can also be made of two layers of mutually independent cloth, and the requirement of the bagged spring string on the cloth is further lowered. The utility model relates to the field of bagged spring strings.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of pocketed spring, in particular to a pocketed spring and a manufacturing device. BACKGROUND

[0002] Pocketed spring is widely used in the production of mattress and sofa. The common form is that multiple pocketed springs are connected to form a spring string, and multiple spring strings are bonded side by side to form a core. The mainstream pocketed spring manufacturing device currently usually first packages non-woven fabric longitudinally into a cloth bag, then sends the compressed spring into the cloth bag, and forms a pocketed spring string by packaging the cloth bag transversely to restrict the spring in an independent pocket.

[0003] The wrapping material of this pocketed spring string is limited by the welding process, and generally uses non-woven fabric made of polypropylene fiber material, which cannot use cloth made of natural fibers such as cotton, hemp, wool, silk, etc. The stitched pocketed spring string is improved on the basis of the existing pocketed spring, and uses sewing method instead of welding process, thereby overcoming the limitation of wrapping material.

[0004] In the manufacturing process, the sewing device sews the cloth in the transverse and longitudinal directions to make the cloth form multiple continuous independent pockets. In some related technologies, the pocketed spring manufacturing device is provided with a longitudinal sewing device at the bag opening position of the cloth bag. With the longitudinal conveying of the cloth, the longitudinal sewing device sews the two layers of folded cloth into a cloth bag; the cloth is intermittently conveyed, and when the cloth stops, the transverse sewing device located downstream separates the cloth bag transversely to form a pocket for packaging the spring.

[0005] However, this sewing method is only suitable for two layers of folded cloth, because only one longitudinal seam is needed at this time. For two layers of cloth that are independent of each other, two longitudinal seams are needed to sew the cloth into a cloth bag. However, the bag opening position of the cloth bag often lacks enough space to set two relative longitudinal sewing devices, resulting in limited application range. SUMMARY

[0006] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides a pocketed spring and a manufacturing device. The pocketed spring can be made not only by two layers of longitudinally folded cloth, but also by two separate layers of cloth.

[0007] According to the pocketed spring provided by the present application, the pocketed spring comprises cloth, springs and a seam. The springs are arranged between two layers of cloth in the longitudinal direction. The seam sews the two layers of cloth. The seam is continuous and comprises alternating longitudinal segments and transverse segments. The longitudinal segments sew the edges of the cloth in the longitudinal direction. The transverse segments extend in the transverse direction to separate two adjacent springs.

[0008] According to the pocketed spring provided by the application, the sewing thread of the pocketed spring has alternating and continuous longitudinal sections and transverse sections, so that when sewing, the longitudinal sewing device and the transverse sewing device do not need to be arranged separately, and when the cloth is conveyed downstream, the sewing device sews to form the longitudinal section, and when the cloth stops, the sewing device sews to form the transverse section. The pocketed spring string can be made of two layers of folded cloth or two layers of independent cloth, and the requirement for the cloth of the pocketed spring string is further relaxed.

[0009] According to some embodiments of the application, at least two groups of sewing threads are included, the longitudinal sections of the two groups of sewing threads are distributed on the same side of the edge of the pocketed spring cloth in the transverse direction, two springs are arranged between every two adjacent transverse sections of each group of sewing threads, and the transverse sections of the two groups of sewing threads are arranged at intervals and jointly separate the adjacent two springs.

[0010] According to some embodiments of the application, four groups of sewing threads are included, the longitudinal sections of two groups of the sewing threads are on one side of the edge of the pocketed spring cloth, the longitudinal sections of the other two groups of the sewing threads are on the other side of the edge of the pocketed spring cloth, and the transverse sections of each group of sewing threads are sewn from the edge of the cloth to the middle of the spring. Each spring pocket is jointly enclosed by the four groups of sewing threads.

[0011] According to some embodiments of the application, two groups of sewing threads are included, the longitudinal sections of the two groups of sewing threads are respectively distributed on the two sides of the edge of the pocketed spring cloth in the transverse direction, two springs are arranged between every two adjacent transverse sections of each group of sewing threads, the transverse sections of each group of sewing threads are sewn from one side edge of the cloth to the other side edge, and the transverse sections of the two groups of sewing threads are arranged at intervals and jointly separate the adjacent two springs.

[0012] According to the pocketed spring manufacturing device provided by the application, the device comprises a cloth feeding device, a spring feeding device, a sewing device and a feeding device. The cloth feeding device is used to provide cloth, the spring feeding device is used to provide compressed springs to the cloth, the sewing device is arranged downstream of the cloth feeding device and the spring feeding device, the sewing device is used to sew the cloth, a plurality of sewing devices are arranged at intervals in the longitudinal direction, the sewing device comprises a sewing machine and a first driving member, the first driving member is used to drive the sewing machine to move in the transverse direction, and the feeding device is arranged downstream of the sewing device and is used to pull the cloth to move downstream in the longitudinal direction.

[0013] According to some embodiments of the present application, the stitching device is divided into two groups, and the two groups of stitching devices longitudinally seal and transversely separate the spring on the same side of the cloth, or one group of stitching devices is used to stitch one side of the cloth in the transverse direction, and the other group of stitching devices is used to stitch the other side of the cloth in the transverse direction.

[0014] According to some embodiments of the present application, the stitching device comprises a first clamping plate, which is arranged in the longitudinal direction, and the cloth and the spring are located between the first clamping plate, and the first clamping plate is used to maintain the compressed state of the spring.

[0015] According to some embodiments of the present application, the stitching device comprises a conveyor belt, which is arranged in the longitudinal direction, and the cloth and the spring are located between the conveyor belt, and the conveyor belt is used to convey the cloth and the spring downstream.

[0016] According to some embodiments of the present application, the stitching device comprises a cloth clamping wheel, which is used to clamp the edge of the cloth in the transverse direction to limit the deviation of the cloth.

[0017] According to some embodiments of the present application, the spring is fed into the two layers of cloth with the pressure-bearing surface facing the longitudinal direction, and the pocket spring manufacturing equipment further comprises a turnover device, which is located downstream of the stitching device, and the turnover device is used to turn over the spring so that the pressure-bearing surface of the spring faces the transverse direction.

[0018] According to some embodiments of the present application, the spring feeding device comprises a compression assembly and a first pushing assembly, the compression assembly defines a first conveying channel, the first conveying channel extends in the transverse direction, the height of the first conveying channel is less than the diameter of the spring, the first pushing assembly comprises a first actuating member, the first actuating member is located on one side of the first conveying channel in the longitudinal direction, and the first actuating member can reciprocate in the transverse direction to compress and push the spring in the transverse direction into the first conveying channel, and the first actuating member is used to exert an eccentric force on the spring to turn over the spring during the pushing process.

[0019] The spring feeding device further comprises a holding assembly and a second pushing assembly, the holding assembly defines a second conveying channel, the second conveying channel extends in the longitudinal direction, the inlet of the second conveying channel is connected to the outlet of the first conveying channel, and the outlet of the second conveying channel is connected to the cloth, and the second pushing assembly comprises a second actuating member, which can move in the longitudinal direction to feed the spring into the cloth.

[0020] The bagged spring manufacturing device is used for manufacturing the bagged spring provided in the present application, and thus has the beneficial effects provided by the bagged spring, which will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0021] The accompanying drawings are used to further understand the technical solutions of the present application, and constitute a part of the specification, and are used together with the embodiments disclosed in the present application to explain the technical solutions of the present application, and do not constitute a limitation on the technical solutions of the present application.

[0022] Figure 1 is a structural schematic diagram of a bagged spring string of an embodiment of the present application;

[0023] Figure 2 is a manufacturing principle schematic diagram of a bagged spring string of an embodiment of the present application, in which a sewing path of a sewing thread is shown;

[0024] Figure 3 is a manufacturing principle schematic diagram of a bagged spring string of another embodiment of the present application, in which a sewing path of a sewing thread is shown;

[0025] Figure 4 is a manufacturing principle schematic diagram of a bagged spring string of another embodiment of the present application, in which a sewing path of a sewing thread is shown;

[0026] Figure 5 is a structural schematic diagram of a bagged spring string manufacturing device of an embodiment of the present application;

[0027] Figure 6 is a structural schematic diagram of a bagged spring string manufacturing device of an embodiment of the present application from another angle;

[0028] Figure 7 is a structural schematic diagram of a sewing device with a first clamping plate of a bagged spring string manufacturing device of an embodiment of the present application;

[0029] Figure 8 is a structural schematic diagram of a feeding device of a bagged spring string manufacturing device of an embodiment of the present application;

[0030] Figure 9 is a structural schematic diagram of a sewing device with a conveying belt of a bagged spring string manufacturing device of an embodiment of the present application;

[0031] Figure 10 is a structural schematic diagram of a spring feeding device of a bagged spring string manufacturing device of an embodiment of the present application;

[0032] Figure 11 is a structural schematic diagram of a spring feeding device of a bagged spring string manufacturing device of an embodiment of the present application;

[0033] Figure 12Fig. 1 is a schematic view of a principle of a first actuating member pushing a spring into a first conveying channel in a spring feeding device according to an embodiment of the present application.

[0034] Reference signs:

[0035] spring feeding device 1000, compression assembly 1100, first conveying channel 1110, first baffle 1120, first slope 1121, second baffle 1130, bottom plate 1140, avoiding groove 1150, first retaining member 1160, first pushing assembly 1200, first actuating member 1210, actuating portion 1211, second slope 12111, limiting portion 1212, clamping hook 12121, sprocket 1220, chain 1230, third baffle 1240, limiting ring 1250, limiting shaft 1260, third driving member 1270, retaining assembly 1300, second pushing assembly 1400;

[0036] spring feeding device 2000;

[0037] stitching device 3000, sewing machine 3100, first driving member 3200, first clamping plate 3300, conveying belt 3410, pulley 3420, clamping roller 3500;

[0038] turning device 4000;

[0039] feeding device 5000, second clamping plate 5100, conveying roller 5200;

[0040] cloth feeding device 6000;

[0041] spring 9100, cloth 9200, suture 9300, longitudinal section 9310, transverse section 9320. DETAILED DESCRIPTION

[0042] The embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only, for the purpose of explaining the present application, and should not be understood as a limitation to the present application.

[0043] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, which is only for the purpose of facilitating the description of the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be understood as a limitation to the present application.

[0044] In the description of the present application, the meaning of one or more is one or more, the meaning of multiple is two or more, greater than, less than, more than, etc. is understood as not including the number, above, below, etc. is understood as including the number. If it is described as first, second, it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.

[0045] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0046] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the present application. In the present description, the exemplary description of the above terms does not necessarily refer to 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.

[0047] In some related technologies, a pocketed spring string is made by sewing, the transverse seam and the longitudinal seam of the pocketed spring string are independent of each other, a longitudinal sewing device is arranged at the bag opening position of the cloth bag by the pocketed spring string making equipment, and the two layers of cloth are sewn into a cloth bag by the longitudinal sewing device as the cloth is longitudinally conveyed; the cloth is intermittently conveyed, and the transverse sewing device located downstream separates the cloth bag transversely to form a pocket room for packaging springs when the cloth stops.

[0048] However, the bag opening area is limited, and it is difficult to arrange two longitudinal sewing devices at the same time, resulting in that such a pocketed spring string needs to be made by folding two layers of cloth, and the selection of raw materials is limited.

[0049] Therefore, the present application provides a pocketed spring, and the pocketed spring of the present application can be made by folding two layers of cloth or by two separate layers of cloth, which is more flexible in the selection of manufacturing process.

[0050] Reference Figure 1According to the bagged spring of the embodiments of the present application, the bagged spring includes cloth 9200, spring 9100, and sewing thread 9300. The spring 9100 is arranged between the two layers of cloth 9200 in the longitudinal direction. The sewing thread 9300 sews the two layers of cloth 9200. The sewing thread 9300 is continuous and includes alternating longitudinal segments 9310 and transverse segments 9320. The longitudinal segments 9310 sew the edges of the cloth 9200 in the longitudinal direction. The transverse segments 9320 extend in the transverse direction to separate the adjacent two springs 9100.

[0051] The sewing thread 9300 of the bagged spring string has alternating and continuous longitudinal segments 9310 and transverse segments 9320. Therefore, when sewing, the longitudinal sewing device and the transverse sewing device do not need to be arranged separately. The longitudinal sewing and the transverse sewing can be completed by the same sewing device.

[0052] Specifically, in combination with reference to Figure 2 The sewing of the sewing device 3000 is divided into a longitudinal sewing link and a transverse sewing link. When the cloth 9200 is conveyed downstream, the relative movement between the sewing device 3000 and the cloth 9200 occurs in the longitudinal direction. The sewing device 3000 enters the longitudinal sewing link, and the sewing forms the longitudinal segment 9310. When the cloth 9200 stops (or is conveyed at a low speed), the sewing device 3000 enters the transverse sewing link. The sewing device 3000 drives the sewing machine to move in the transverse direction, and the sewing forms the transverse segment 9320.

[0053] Since the longitudinal sewing to form the cloth bag is not required, the design of the sewing thread 9300 of the bagged spring string relaxes the requirement for the arrangement position of the sewing device 3000. The plurality of sewing devices 3000 can be arranged in the conveying route of the cloth 9200 in the longitudinal direction.

[0054] It can be understood that the sewing thread 9300 is designed to be continuous in the transverse and longitudinal directions to be applicable to the two types of cloth. Based on this, the two groups of sewing devices 3000 are cooperatively operated to be applicable to the two layers of cloth separately. On this basis, the plurality of sewing devices 3000 can be cooperatively operated to further expand the applicable range.

[0055] In some embodiments, the at least two groups of sewing devices 3000 can form at least two groups of sewing threads 9300. The longitudinal segments of the two groups of sewing threads 9300 are distributed on the same side of the edge of the bagged spring cloth 9200 in the transverse direction. Two springs 9100 are arranged between the adjacent two transverse segments 9320 of each group of sewing threads 9300. The transverse segments 9320 of the two groups of sewing threads 9300 are arranged at intervals and jointly separate the adjacent two springs 9100.

[0056] Optionally, the plurality of stitching devices 3000 can form a plurality of stitching lines 9300, wherein two groups of the stitching lines 9300 have longitudinal segments on one side of the edge of the pocketed spring cloth 9200, and the other two groups of the stitching lines 9300 have longitudinal segments on the other side of the edge of the pocketed spring cloth 9200, and each group of the stitching lines 9300 has only one transverse segment 9320 that is stitched from the edge of the cloth 9200 to the middle of the spring 9100, and each spring pocket is formed by the four groups of the stitching lines 9300.

[0057] Optionally, two groups of the stitching devices 3000 can form two groups of the stitching lines 9300, wherein the longitudinal segments of the two groups of the stitching lines 9300 are distributed on the two sides of the edge of the pocketed spring cloth 9200 in the transverse direction, and two springs 9100 are arranged between the adjacent two transverse segments of each group of the stitching lines 9300, and the transverse segments of each group of the stitching lines 9300 are stitched from one side of the edge of the cloth 9200 to the other side of the edge, and the transverse segments of the two groups of the stitching lines are arranged in a staggered manner and separate the adjacent two springs 9100.

[0058] For example, for the two-layer cloth shown in the figure, the plurality of stitching devices 3000 can form a plurality of continuous stitching lines 9300, and the stitching lines 9300 are divided into two groups, and the two groups of the stitching lines 9300 are distributed on the two sides of the spring 9100 in the transverse direction, so as to stitch the two sides of the cloth 9200. Figure 2 As shown in the figure, the two-layer cloth is independent of each other, and the plurality of stitching devices 3000 can form a plurality of continuous stitching lines 9300, and the stitching lines 9300 are divided into two groups, and the two groups of the stitching lines 9300 are distributed on the two sides of the spring 9100 in the transverse direction, so as to stitch the two sides of the cloth 9200.

[0059] Therefore, the pocketed spring string can be made of the two-layer cloth 9200 that is folded or the two-layer cloth 9200 that is independent of each other, and the requirement for the cloth of the pocketed spring string is further relaxed.

[0060] It can be understood that the design of the stitching line 9300 will affect the control logic and the number arrangement of the stitching device 3000, and thus affect the manufacturing efficiency of the pocketed spring string, and therefore it is necessary to design a suitable stitching line 9300 path to improve the manufacturing efficiency.

[0061] Optionally, a plurality of springs 9100 are arranged between the adjacent two transverse segments 9320 of one stitching line 9300, and the transverse segments 9320 of the plurality of stitching lines 9300 located on the same side of the spring 9100 are staggered with each other and separate the adjacent two springs 9100.

[0062] At this time, a plurality of stitching devices 3000 are used to stitch the plurality of stitching lines 9300 on the same side, and the transverse segments 9320 responsible for stitching of each stitching device 3000 are staggered with each other, so that the plurality of sewing machines can move transversely together in one transverse stitching link, and separate a plurality of springs 9100 at one time, which helps to reduce the frequency of the transverse stitching link and improve the manufacturing efficiency of the pocketed spring string.

[0063] Specifically, in the case of Figure 2In the shown embodiment, two adjacent transverse segments 9320 cross two springs 9100, so two stitching devices 3000 can be arranged on the same side, the interval of the two stitching devices 3000 is consistent with the interval of the springs 9100, and in the transverse stitching link, the two stitching devices 3000 move together in the transverse direction, and the stitching forms two transverse segments 9320.

[0064] In addition to reducing the frequency of the transverse stitching link, increasing the speed of the transverse stitching link can also improve the production efficiency of the pocketed spring string. To this end, optionally, referring to Figure 2 , the transverse segments 9320 of the stitching lines 9300 on the two sides are aligned with each other, and the transverse segments 9320 are smaller than half the transverse dimension of the pocketed spring string in the transverse direction.

[0065] The transverse segments 9320 on the two sides are combined together to separate the two adjacent springs 9100, and compared with the transverse segments 9320 extending from one side of the spring 9100 to the other side in the transverse direction, the total length of a single transverse segment 9320 is shortened by more than half, so the time of a single transverse stitching link is greatly reduced. At the same time, as Figure 2 shown, the stitching devices 3000 on the two sides can be arranged staggered, so that in one transverse stitching link, the stitching devices 3000 on the two sides can be stitched together without affecting each other.

[0066] It should be noted that, Figure 1 and Figure 2 One design of the stitching line 9300 is shown, in addition to this, the stitching line 9300 with alternating and continuous longitudinal segments 9310 and transverse segments 9320 can also adopt other designs.

[0067] Exemplarily, referring to Figure 3 , the two stitching devices 3000 are sewn on opposite sides, two springs 9100 are arranged between the two adjacent transverse segments 9320 of a stitching line 9300, and the transverse segments 9320 of the stitching lines 9300 on the two sides are staggered with each other.

[0068] Exemplarily, referring to Figure 4 , the two stitching devices 3000 are sewn on the same side, two springs 9100 are arranged between the two adjacent transverse segments 9320 of a stitching line 9300, and the transverse segments 9320 of the stitching lines 9300 on the same side are arranged alternately.

[0069] Other possible designs of the stitching line 9300 without departing from the design concept of the present application will not be described here.

[0070] In order to make the pocketed spring proposed in the present application, the present application also provides a pocketed spring stitching method.

[0071] According to the pocketed spring stitching method of the embodiment of the present application, comprising:

[0072] The two layers of cloth 9200 are intermittently fed in the longitudinal direction;

[0073] The sewing machine sews the edges of the cloth 9200 when the cloth 9200 is fed in the longitudinal direction at a high speed;

[0074] When the cloth 9200 is fed intermittently or in the longitudinal direction at a low speed, the two springs 9100 are sent into the two layers of cloth 9200 one after another in a compressed state, and the sewing machine sews the cloth 9200 in the transverse direction, and the springs 9100 sent into the cloth 9200 before are separated by the thread 9300.

[0075] The spring 9100 is sent into the two layers of cloth 9200 in a compressed state;

[0076] The sewing machine moves relative to the cloth 9200 in the longitudinal direction and the transverse direction, and forms the thread 9300 with alternating longitudinal sections 9310 and transverse sections 9320, so as to encapsulate the spring 9100 in the cloth 9200.

[0077] Since the thread 9300 with the longitudinal sections 9310 and the transverse sections 9320 is formed continuously, the bagged spring sewing method is suitable for sewing the two layers of cloth 9200 folded and is suitable for sewing the two layers of cloth 9200 separately, and has a wider range of application.

[0078] Further, in the bagged spring sewing method, two groups of sewing machines are used to sew two groups of threads 9300 on the two sides of the spring 9100 in the transverse direction.

[0079] There can be one or more sewing machines (i.e., sewing devices 3000) in one group, and exemplarily, in some embodiments, in order to sew the bagged spring string in Figure 2 Each group includes two sewing machines, and the sewing machines are arranged in the longitudinal direction, and form two threads 9300, and the transverse sections 9320 of the two threads 9300 are staggered.

[0080] In order to implement the bagged spring sewing method of the present application, the bagged spring of the present application is manufactured, and the bagged spring manufacturing device is also provided.

[0081] Referring to Figure 5 and Figure 6The pocketed spring manufacturing device provided by the application comprises a cloth feeding device 6000, a spring feeding device 1000, a sewing device 3000 and a feeding device 5000. The cloth feeding device 6000 is used to provide cloth 9200. The spring feeding device 1000 is used to provide compressed springs 9100 to the cloth 9200. The sewing device 3000 is arranged downstream of the cloth feeding device 6000 and the spring feeding device 1000. The sewing device 3000 is used to sew the cloth 9200. A plurality of sewing devices 3000 are arranged at intervals in the longitudinal direction. The sewing device 3000 comprises a sewing machine 3100 and a first driving member 3200. The first driving member 3200 is used to drive the sewing machine 3100 to move in the transverse direction. The feeding device 5000 is arranged downstream of the sewing device 3000. The feeding device 5000 is used to pull the cloth 9200 to move downstream in the longitudinal direction.

[0082] During the manufacturing process, the cloth 9200 is intermittently conveyed downstream under the driving of the feeding device 5000. When the cloth 9200 is conveyed downstream, the sewing machine 3100 is stationary in the transverse direction, so as to sew longitudinal sections 9310 on the cloth 9200. When the conveying of the cloth 9200 is paused, the sewing machine 3100 moves in the transverse direction, so as to sew transverse sections 9320 on the cloth 9200.

[0083] The pocketed spring manufacturing device provided by the application can be used to manufacture the pocketed spring provided by the application, and thus has the beneficial effects of the pocketed spring. Details are not described herein.

[0084] In addition, since the feeding device 5000 is arranged in the pocketed spring manufacturing device to convey the cloth 9200 downstream, the sewing device 3000 can sew the longitudinal sections 9310 without longitudinal movement, so as to help simplify the structural design of the sewing device 3000, reduce the longitudinal size of the sewing device 3000, and further help manufacture pocketed spring strings with smaller intervals of the transverse sections 9320, thereby improving the application range of the pocketed spring manufacturing device.

[0085] It can be understood that, for the two layers of cloth 9200 folded together, only one set of sewing devices 3000 can be arranged to sew one side of the cloth 9200. However, in some embodiments, for the two independent layers of cloth 9200, the sewing devices 3000 need to be divided into two groups. The two groups of sewing devices 3000 are used to seal the cloth 9200 in the longitudinal direction and separate the springs 9100 in the transverse direction on the same side of the cloth 9200, or one group of sewing devices 3000 is used to sew one side of the cloth 9200 in the transverse direction, and the other group of sewing devices 3000 is used to sew the other side of the cloth 9200 in the transverse direction.

[0086] In the pocketed spring string, different packaging methods have different preferences for the orientation of the spring 9100 when it is fed between the two layers of cloth 9200.

[0087] On the one hand, when the spring 9100 is fed in a transverse state, it cannot be compressed in the vertical direction, and it will expand the cloth 9200 in the vertical direction, and the expansion of the cloth 9200 is not controlled (for example, in the case of using a variable diameter spring), which will negatively affect the quality and consistency of the stitching 9300.

[0088] On the other hand, since the pocketed spring making device and the pocketed spring stitching method of the present application do not stitch the two layers of cloth 9200 into cloth pockets in the longitudinal direction in advance, the two layers of cloth 9200 are open in the transverse direction, and the compressed state of the spring 9100 cannot be maintained.

[0089] Therefore, in the pocketed spring making device of the present application, the spring 9100 is fed between the two layers of cloth 9200 with the pressure-bearing surface facing the longitudinal direction, and the pocketed spring making device further comprises a turnover device 4000 located downstream of the stitching device 3000, the turnover device 4000 is used to turn over the spring 9100 so that the pressure-bearing surface of the spring 9100 faces the transverse direction.

[0090] That is, in the pocketed spring making device and the pocketed spring stitching method, the spring 9100 is first packaged into an independent pocket chamber of the cloth pocket, and then the spring 9100 is turned over to make the spring 9100 rebound in the transverse direction, thereby supporting the pocket chamber to form the final pocketed spring.

[0091] Before packaging is completed, in order to maintain the flattened state of the spring 9100 in the vertical direction, in some embodiments, with reference to Figure 7 , the stitching device 3000 comprises a first clamping plate 3300, the first clamping plate 3300 is arranged in the longitudinal direction, the cloth 9200 and the spring 9100 are located between the first clamping plate 3300, and the first clamping plate 3300 is used to maintain the compressed state of the spring 9100.

[0092] Specifically, the first clamping plate 3300 is located on the side of the sewing machine 3100 in the longitudinal direction, so as not to interfere with the transverse movement of the sewing machine 3100, and the first clamping plate 3300 stabilizes the spring 9100 in a suitable compressed state, so that the sewing machine 3100 can obtain better stitching quality.

[0093] It should also be noted that the elastic force of the spring 9100 acts on the first clamping plate 3300 to generate a friction force. If the friction force between the cloth 9200 and the first clamping plate 3300 and the friction force between the cloth 9200 and the spring 9100 are insufficient, the cloth 9200 and the spring 9100 can slip when the feeding device 5000 pulls the cloth 9200, and the cloth 9200 is pulled to move downstream while the spring 9100 stays in place, which causes the position of the spring 9100 to deviate and generates a hollow pocket or other defects.

[0094] To this end, with reference to Figure 8 Optionally, the sewing device includes a conveying belt 3410, the conveying belt 3410 is arranged at intervals in the longitudinal direction, the cloth 9200 and the spring 9100 are located between the conveying belt 3410, and the conveying belt 3410 is used to convey the cloth 9200 and the spring 9100 downstream.

[0095] The conveying belt 3410 can move in the longitudinal direction, so as to actively drive the spring 9100 to move downstream in cooperation with the pulling action of the feeding device 5000, thereby reducing the risk of slippage of the spring 9100 and the cloth 9200.

[0096] Specifically, in some embodiments, as Figure 8 shown, the sewing device further includes a pulley 3420 and a second driving member (not shown in the figure), the conveying belt 3410 is arranged around the pulley 3420, and the second driving member drives the pulley 3420 to rotate through a transmission mechanism (for example, a bevel gear in the figure), so as to drive the conveying belt 3410 to move in the longitudinal direction and convey the clamped spring 9100.

[0097] It should be noted that the conveying belt 3410 and the first clamping plate 3300 are not in an either-or relationship, and the pocket spring manufacturing equipment can appropriately arrange the first clamping plate 3300 in some sewing devices 3000, arrange the conveying belt 3410 in some sewing devices 3000, or arrange the first clamping plate 3300 on one side of the sewing device 3000 and the conveying belt 3410 on the other side, so as to balance the yield of the pocket spring, the cost and structural complexity of the pocket spring manufacturing equipment, which is not limited in the present application.

[0098] In some embodiments, the sewing device 3000 can further include a cloth clamping wheel 3500, which is used to clamp the edge of the cloth 9200 in the transverse direction to limit the deviation of the cloth 9200.

[0099] Specifically, when the cloth 9200 has a tendency to deviate in the transverse direction, the cloth clamping wheel 3500 can apply a reverse force to the cloth 9200, so as to maintain the cloth 9200 in the original position.

[0100] Exemplarily, the surface of the cloth clamping wheel 3500 can have protruding spikes that can penetrate the cloth 9200 to exert a force on the cloth 9200. Alternatively, the cloth clamping wheel 3500 can also have a rough surface to exert a force on the cloth 9200 through friction.

[0101] Referring to Figure 9 In some embodiments, the feeding device 5000 includes second clamping plates 5100 that are vertically spaced apart and clamp the springs 9100 to continue to maintain the compressed state of the springs 9100, and conveying wheels 5200 that are located on the sides of the second clamping plates 5100 in the lateral direction, clamp the edges of the cloth 9200, and rotate to drive the cloth 9200 to move downstream. Since the springs 9100 have been encapsulated into the pocket chambers at this time, the cloth 9200 moves while the springs 9100 also move, thereby achieving the discharge of the pocketed spring string.

[0102] Of course, in addition to the feeding device 5000 shown in the present application, other designs can also be used to drive the cloth 9200 to move downstream, for example, the feeding device 5000 is arranged downstream of the turnover device 4000, the feeding device 5000 drives the springs 9100 to move the cloth 9200, and the like, which will not be described here.

[0103] In order to vertically enter the springs 9100 into the cloth 9200, in some related technologies, the springs 9100 are compressed and conveyed through multiple steps.

[0104] First, the springs 9100 need to be received and turned from the upstream (i.e., the spring feeding device 2000 in the Figure 5 , Figure 6 ), so that the axis of the springs 9100 changes from the lateral direction to the vertical direction (the pressure surface changes from the lateral direction to the vertical direction), then the springs 9100 need to be compressed along the axis of the springs 9100, next the compressed springs 9100 need to be transferred to the pushing position, and finally the springs are pushed into the cloth 9200 by the pushing member, which makes it difficult to improve the production efficiency of the pocketed spring string.

[0105] Referring to Figure 10 , Figure 11 and Figure 12In some embodiments, the spring loading device 1000 includes a compression assembly 1100 and a first pushing assembly 1200, the compression assembly 1100 defines a first conveying passage 1110 extending in the lateral direction, the first conveying passage 1110 has a height smaller than the diameter of the spring 9100, the first pushing assembly 1200 includes a first actuating member 1210 located at one side of the first conveying passage 1110 in the longitudinal direction, the first actuating member 1210 is capable of reciprocating in the lateral direction to compress and push the spring 9100 into the first conveying passage 1110 in the lateral direction, the first actuating member 1210 is configured to apply an eccentric force to the spring 9100 to make the spring 9100 flip during the pushing process.

[0106] The spring 9100 is fed to the compression assembly 1100 in the manner that the axis is in the lateral direction, and the first actuating member 1210 moves in the lateral direction, since the height of the first conveying passage 1110 is smaller than the diameter of the spring, the spring 9100 cannot enter the first conveying passage 1110 in the current posture, and the spring 9100 is compressed along the axis under the pushing force of the first actuating member 1210 and the pushing force of the compression assembly 1100.

[0107] At the same time, since the force applied by the first actuating member 1210 deviates from the center of the spring 9100, the force generates a torque that drives the spring 9100 to flip, so that the spring 9100 flips at the end of the compression process.

[0108] Since the first actuating member 1210 is actively moved in the lateral direction, and the compression assembly 1100 is passively blocked and supported to the spring 9100, after the spring 9100 flips, the spring 9100 is sleeved on the first actuating member 1210, and the first actuating member 1210 pushes the flipped spring into the first conveying passage 1110.

[0109] Therefore, the spring loading device 1000 can integrate the compression and flipping of the spring 9100, reduce the number of steps required in the spring loading process, meet the requirement of vertically loading the spring 9100, and help improve the efficiency of making the pocketed spring string.

[0110] It should be noted that the torque is generated by the pushing force of the first actuating member 1210 to the spring 9100 and the pushing force of the compression assembly 1100 to the spring 9100, the farther the distance between the two forces in the vertical direction, the greater the torque generated, and the more likely the spring 9100 flips, so that the spring loading device 1000 runs more smoothly.

[0111] To this end, the compression assembly 1100 optionally further comprises a first baffle 1120 located at the entrance of the first conveying channel 1110, the first baffle 1120 being located on the other side of the first conveying channel 1110 in the vertical direction, the first actuating member 1210 pushing the spring 9100 towards the first baffle 1120 to compress the spring 9100, the first actuating member 1210 applying a force on one side of the spring 900, and the first baffle 1120 applying a force on the other side of the spring to make the spring 9100 flip over.

[0112] Exemplarily, in some embodiments, referring to Figure 12 , the first actuating member 1210 is located on the lower side, the first baffle 1120 is located on the upper side, the width of the first actuating member 1210 is less than the diameter of the spring 9100, and the contact part of the first actuating member 1210 and the spring 9100 is close to the lower side, while the width of the first baffle 1120 is less than the diameter of the spring 9100, and the contact part of the first baffle 1120 and the spring 9100 is close to the upper side, both forces are in the counterclockwise direction, so the resultant force generates a torque that makes the spring 9100 rotate counterclockwise.

[0113] Preferably, in order to guide the spring 9100 into the first conveying channel 1100, referring to Figure 12 , in some embodiments, the first baffle 1120 comprises a first inclined surface 1121 inclined towards the first actuating member 1210 along the extension direction of the first conveying channel 1110. Even if the spring 9100 has not been fully compressed in place when it is flipped over, or the spring 9100 has a certain rebound during the flipping process, the spring 9100 can still complete the remaining compression process under the guidance of the first inclined surface 1121, thereby smoothly entering the first conveying channel 1110, so that the spring feeding device 1000 has better fault tolerance and adaptability.

[0114] In order to limit the rebound of the spring 9100, and also to avoid the spring wire at the end of the spring 9100 from slipping off the first actuating member 1210, the first actuating member 1210 optionally comprises a limiting protrusion for limiting the flipped-over spring 9100 in the vertical direction.

[0115] Exemplarily, referring to Figure 12 , the limiting protrusion comprises a second inclined surface 12111 capable of applying an inclined force to the spring wire of the spring 9100, which points to the side where the first actuating member 1210 is located, specifically Figure 3 downward in the embodiment shown, thereby avoiding the spring wire from slipping off the first actuating member 1210.

[0116] It can be understood that Figure 12It is only exemplarily shown that the first baffle 1120 and the first actuating member 1210 are arranged in this way, and the first baffle 1120 and the first actuating member 1210 can also be arranged in other ways without departing from the design idea of the present application, which is not limited in the present application.

[0117] For the spring 9100 with high compression ratio, bending deformation is prone to occur during rapid compression, in order to ensure the compression efficiency while taking into account the reliability, in some embodiments, the compression assembly 1100 comprises a second baffle 1130, the second baffle 1130 extends in the transverse direction, the second baffle 1130 is arranged at the inlet of the first conveying channel 1110, and the second baffle 1130 is used for limiting the spring 9100 in the radial direction.

[0118] Referring to Figure 10 , exemplarily, the second baffle 1130 can adopt a split design, three second baffles 1130 surround the spring 9100, wherein the upper second baffle 1130 is indicated by a dashed line to show the spring 9100 below and the first actuating member 1210. The end of the second baffle 1130 close to the upstream is outwardly and obliquely folded, thereby helping to guide the spring 9100 into the second baffles 1130. Of course, the second baffle 1130 can also use an integrated design, which is not limited in the present application.

[0119] Optionally, referring to Figure 10 and Figure 11 , in some embodiments, the compression assembly 1100 further comprises a bottom plate 1140, the bottom plate 1140 is used for receiving the spring 9100 from below to avoid accidental falling of the spring 9100, and the bottom plate 1140 and the second baffle 1130 jointly limit the spring 9100 in the radial direction.

[0120] It should be pointed out that the bottom plate 1140 is not necessary, since the spring feeding device 2000 generally uses a spring seat with magnetic attraction function to convey the spring 9100, so that even if the bottom plate 1140 is not arranged, the spring 9100 will not fall; in some cases, for example, when the first actuating member 1210 is arranged on the upper side, the spring seat of the spring feeding device 2000 can also play a role similar to that of the bottom plate 1140.

[0121] It can be understood that the movement route of the first actuating member 1210 needs to be avoided by each part of the compression assembly 1100, and optionally, the compression assembly 1100 defines an avoidance slot 1150 for avoiding the movement route of the first actuating member 1210.

[0122] The avoidance slot 1150 can be constructed in different ways, exemplarily, referring to Figure 10 and Figure 11First, the two bottom plates 1140 are arranged at intervals, and the gap 1150 is formed between the bottom plates 1140, so as to allow the first actuating member 1210 to extend out of the gap 1150 and push the spring 9100 to move laterally; second, the gap 1150 is also formed on the first baffle 1120, and the first actuating member 1210 passes through the first baffle 1120 from the gap 1150, so that the first baffle 1120 and the first actuating member 1210 jointly limit the spring 9100, avoiding the spring 9100 from falling off the first actuating member 1210; and finally, in the embodiment shown in the drawings, the compression assembly 1100 includes the first retaining member 1160, which defines the first conveying channel 1110 and is provided with the gap 1150 communicating with the first conveying channel 1110, so as to allow the first actuating member 1210 to enter and exit the first conveying channel 1110. The gaps 1150 jointly serve as a gap, meeting the route requirement of the first actuating member 1210 for reciprocally compressing and conveying the spring 9100. Figure 10 and Figure 11 In the embodiment shown in the drawings, the compression assembly 1100 includes the first retaining member 1160, which defines the first conveying channel 1110 and is provided with the gap 1150 communicating with the first conveying channel 1110, so as to allow the first actuating member 1210 to enter and exit the first conveying channel 1110. The gaps 1150 jointly serve as a gap, meeting the route requirement of the first actuating member 1210 for reciprocally compressing and conveying the spring 9100.

[0123] The first actuating member 1210 can adopt different reciprocating modes. For example, the first actuating member 1210 can optionally retreat along the original route in the lateral direction after pushing the spring 9100 to the target position of the first conveying channel 1110. However, the first actuating member 1210 hinders the conveying of the next spring 9100 during the retreat process, so the spring feeding device 1000 needs to wait until the first actuating member 1210 retreats to the initial position before receiving the new spring 9100 from the spring supply device 2000, which cannot realize the parallel operation of each link, obviously resulting in a decrease in the spring feeding efficiency.

[0124] Therefore, the movement route of the first actuating member 1210 can optionally include an actuating section and a return section. The first actuating member 1210 pushes the spring 9100 in the actuating section, and the first actuating member 1210 avoids the conveying route of the spring 9100 and resets in the return section.

[0125] That is, in the return section, the conveying route of the first actuating member 1210 and the spring 9100 is staggered, so the spring feeding device 1000 can be provided with multiple first actuating members 1210. During the retreat of the current first actuating member 1210, the next first actuating member 1210 can simultaneously compress and convey the next spring 9100, making the spring feeding more efficient.

[0126] Specifically, the first pushing assembly 1200 comprises a first driving mechanism for driving the first actuating member 1210, after the spring 9100 is pushed into position, the first driving mechanism can drive the first actuating member 1210 to exit the first conveying channel 1110 in the vertical direction, so as to be staggered with the conveying route of the spring 9100; meanwhile, the first driving mechanism also drives the first actuating member 1210 to retreat in the horizontal direction, and then to reset in the vertical direction after the horizontal movement is in position.

[0127] Exemplarily, referring to Figure 11 and Figure 12 In some embodiments, the first driving mechanism comprises a sprocket 1220 and a chain 1230, the first actuating member 1210 is rotatably arranged on the chain 1230, and the first pushing assembly 1200 further comprises a limiting member for limiting the rotation of the first actuating member 1210.

[0128] The sprocket 1220 is driven to rotate by a third driving member 1270, so as to make the chain 1230 drive the first actuating member 1210 to cyclically move. In the actuating section, the limiting member locks the first actuating member 1210, so that the first actuating member 1210 stands up and exerts force on the spring 9100; in the backflow section, the limiting member releases the first actuating member 1210, and the first actuating member 1210 is forced to rotate along with the movement of the chain 1230, so as to exit the first conveying channel 1110; then the chain 1230 drives the first actuating member 1210 to backflow and reset, and the limiting member locks the first actuating member 1210 again, so that the first actuating member 1210 is in a state suitable for pushing the spring 9100.

[0129] Exemplarily, referring to Figure 11 The limiting member comprises a third baffle 1240 and a limiting ring 1250, the third baffle 1240 extends along the actuating section, and the limiting ring 1250 is arranged on the sprocket 1220 upstream of the actuating section. In the process of moving along the actuating section, the third baffle 1240 keeps contacting the first actuating member 1210, so as to achieve the locking effect, and in the process of the first actuating member 1210 rising into the actuating section, the limiting ring 1250 contacts the first actuating member 1210, so as to avoid the first actuating member 1210 from falling down under the action of gravity.

[0130] In order to improve the contact effect between the first actuating member 1210 and the limiting member, optionally, the first actuating member 1210 comprises an actuating part 1211 and a limiting part 1212, the actuating part 1211 is used for contacting the spring 9100, and the limiting part 1212 is used for contacting the limiting member.

[0131] Exemplarily, referring to Figure 11In some embodiments, the actuating portion 1211 and the limiting portion 1212 form an angle of approximately 90°. In the actuating section, the limiting portion 1212 extends laterally, thereby increasing the contact area between the first actuating member 1210 and the third baffle 1240 and improving the locking effect, while the actuating portion 1211 extends vertically to push the spring 9100.

[0132] It can be understood that the length of the actuator 1211 ( Figure 12 The diameter of the spring 9100 (indicated by L) needs to be smaller than the diameter of the spring 9100, so that the flipped spring 9100 can be placed on the actuating portion 1211 without being lifted up by the actuating portion 1211. In addition, the rotation path of the actuating portion 1211 does not interfere with the spring 9100, specifically does not interfere with the flipped spring 9100, so that it can normally exit the first conveying channel 1110 through rotation.

[0133] In addition, optionally, the limiting portion 1212 is formed with a hook 12121, and the limiting member includes a limiting shaft 1260, which is provided on the chain 1230 and located upstream of the first actuating member 1210, and the hook 12121 is used to hook the limiting shaft 1260. The limiting shaft 1260 can play an auxiliary limiting role.

[0134] It should be emphasized that in Figure 11 In the illustrated embodiment, the present application takes the sprocket 1220 and the chain 1230 as an example to introduce one of the construction methods of the actuating section and the return section, but the design that the spring feeding device 1000 can adopt is not limited to this.

[0135] For example, a conveyor belt can be used instead of chain 1230 to achieve the reciprocating motion of first actuator 1210. Another example is a linear motor that drives first actuator 1210 to reciprocate laterally, with first actuator 1210 avoiding the conveying path of spring 9100 by telescoping or other means. Other feasible structural configurations are not described in detail here.

[0136] After the spring 9100 is compressed, it needs to be delivered to the cloth 9200. In some related technologies, the compressed spring 9100 needs to be moved before it can be delivered, which also leads to a decrease in efficiency.

[0137] To this end, optionally, refer to Figure 10The spring loading device 1000 further comprises a holding assembly 1300 and a second pushing assembly 1400. The holding assembly 1300 defines a second conveying channel, which extends in the longitudinal direction, and the inlet of the second conveying channel is in butt joint with the outlet of the first conveying channel 1110, and the outlet of the second conveying channel is in butt joint with the cloth bag. The second pushing assembly 1400 comprises a second actuating member, which is movable in the longitudinal direction to send the spring 9100 into the cloth bag.

[0138] By butt joining the second conveying channel and the first conveying channel 1110, the spring 9100 leaving the first conveying channel 1110 directly enters the second conveying channel, which saves the transfer process of the spring 9100 and helps to improve the loading efficiency.

[0139] In some alternative embodiments, the functions / operations mentioned in the block diagram can not occur in the order mentioned in the operation diagram. For example, depending on the functions / operations involved, two blocks shown in succession can actually be executed substantially concurrently or the blocks can sometimes be executed in reverse order. Furthermore, the embodiments presented and described in the flowcharts of the present application are provided by way of example only, and are not intended to provide an exhaustive description of aspects of the present application. The disclosed methods are not limited to the operations and logical flows presented in this specification. Alternative embodiments are contemplated in which the order of various operations is changed and in which sub-operations described as part of a larger operation are executed independently.

[0140] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A pocket spring, characterized in that: The pocket spring comprises: fabric; Springs, the springs being arranged longitudinally and spaced apart between the two layers of the fabric; A stitching line is used to sew the two layers of fabric together. The stitching line is continuous and includes longitudinal segments and transverse segments that are alternately arranged. The longitudinal segments sew the edges of the fabric in the longitudinal direction, and the transverse segments extend in the transverse direction to separate two adjacent springs.

2. The pocket spring according to claim 1, wherein: The invention comprises at least two groups of stitches, wherein the longitudinal segments of the two groups of stitches are distributed on the same side of the edge of the pocket spring fabric in the transverse direction, two springs are arranged between two adjacent transverse segments of each group of stitches, and the transverse segments of the two groups of stitches are spaced apart from each other to separate two adjacent springs.

3. The pocket spring according to claim 2, wherein: It includes four groups of sutures, wherein the longitudinal segments of two groups of sutures are on one side of the edge of the pocket spring fabric, and the longitudinal segments of the other two groups of sutures are on the other side of the edge of the pocket spring fabric. The transverse segments of each group of sutures are only sewn from the edge of the fabric to the middle of the spring. Each spring pocket is enclosed by the four groups of sutures.

4. The pocket spring according to claim 1, wherein: The invention comprises two groups of sutures, wherein the longitudinal segments of the two groups of sutures are respectively distributed on both sides of the edge of the pocket spring fabric in the transverse direction, two springs are arranged between two adjacent transverse segments of each group of sutures, and the transverse segments of each group of sutures are sewn from one edge of the fabric to the other edge, and the transverse segments of the two groups of sutures are spaced apart from each other to jointly separate two adjacent springs.

5. A bag spring production device, characterized in that: include: a cloth feeding device, the cloth feeding device being used to provide cloth; a spring feeding device, the spring feeding device being used to provide a compressed spring to the cloth; a sewing device, the sewing device being arranged downstream of the cloth feeding device and the spring feeding device, the sewing device being used to sew the cloth, a plurality of the sewing devices being arranged at intervals in the longitudinal direction, the sewing device comprising a sewing machine and a first driving member, the first driving member being used to drive the sewing machine to move in the transverse direction; A feeding device is provided downstream of the sewing device, and is used for pulling the cloth to move downstream along the longitudinal direction.

6. The pocket spring manufacturing equipment according to claim 5, characterized in that: The sewing devices are divided into two groups, and the two groups of sewing devices longitudinally seal the cloth on the same side and laterally separate the spring. Alternatively, one group of sewing devices is used to sew the cloth on one side in the transverse direction, and the other group of sewing devices is used to sew the cloth on the other side in the transverse direction.

7. The pocket spring manufacturing equipment according to claim 6, characterized in that: The suturing device includes a first clamping plate, which is arranged at intervals in the longitudinal direction, and the cloth and the spring are located between the first clamping plates. The first clamping plate is used to maintain the compressed state of the spring.

8. The pocket spring manufacturing equipment according to claim 6 or 7, characterized in that: The sewing device includes conveyor belts, which are arranged at intervals in the longitudinal direction. The cloth and the spring are located between the conveyor belts. The conveyor belts are used to convey the cloth and the spring downstream.

9. The pocket spring manufacturing equipment according to claim 8, characterized in that: The stitching device includes a cloth clamping wheel, which is used to clamp the edge of the cloth in the transverse direction to limit the deviation of the cloth.

10. The pocket spring manufacturing equipment according to claim 5, characterized in that: The spring is fed between the two layers of fabric with the pressure-bearing surface facing longitudinally. The bagged spring manufacturing equipment also includes a flipping device, which is located downstream of the sewing device. The flipping device is used to flip the spring so that the pressure-bearing surface of the spring faces transversely.

11. The pocket spring manufacturing equipment according to claim 5, characterized in that: The spring feeding device includes a compression assembly and a first pushing assembly, the compression assembly defines a first conveying channel, the first conveying channel extends in the transverse direction, the height of the first conveying channel is smaller than the diameter of the spring, the first pushing assembly includes a first actuator, the first actuator is located on one side of the first conveying channel in the longitudinal direction, the first actuator can reciprocate in the transverse direction to compress the spring in the transverse direction and push it into the first conveying channel, the first actuator is used to apply an eccentric force to the spring to cause the spring to flip during the pushing process.

12. The pocket spring manufacturing equipment according to claim 11, characterized in that: The spring feeding device also includes a holding assembly and a second pushing assembly, the holding assembly defines a second conveying channel, the second conveying channel extends in the longitudinal direction, the inlet of the second conveying channel docks with the outlet of the first conveying channel, the outlet of the second conveying channel docks with the cloth, and the second pushing assembly includes a second actuator, which can move in the longitudinal direction to feed the spring into the cloth.

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