A spring loading device, a pocketed spring string manufacturing apparatus and method

Abstract

The application provides a spring loading device, a bagged spring string manufacturing device and method. The spring loading device comprises a compression assembly and a first pushing assembly. The compression assembly defines a first conveying channel, which extends in the transverse direction and comprises a compression section and a holding section. The spring is compressed in the compression section and is sent into a cloth bag in the compressed state in the holding section. The first pushing assembly comprises a first actuating member. The first actuating member pushes the steel wire on one side of the spring to make the spring enter the holding section from the compression section in the first conveying channel and is turned over before entering the holding section. The spring loading device can integrate the compression and turning over of the spring together, reduces the required links in the spring loading process, and helps to improve the manufacturing efficiency of the bagged spring string.

Description

Technical Field

[0001] This application relates to the field of bagged springs, and in particular to a spring feeding device, bagged spring string manufacturing equipment and method. Background Technology

[0002] Pocket springs are widely used in mattress and sofa production. A common form is multiple pocket springs connected together to form a spring string, which is then bonded side-by-side to form the mattress core. Currently, mainstream pocket spring string production equipment typically first longitudinally seals non-woven fabric into a bag, then compresses the springs and feeds them into the bag. The bag is then laterally sealed to confine the springs within individual compartments, forming a pocket spring string.

[0003] The efficiency of spring feeding into the bag has a significant impact on the production efficiency of bagged spring strings. Since the upstream springs are often provided with their axes in a transverse direction, in order to improve efficiency, related technologies (such as Chinese Patent 201410079173.7) often feed the springs into the bag with their axes in a transverse direction. In this case, a conveyor belt-based conveyor channel can be used. The inlet of the conveyor channel is connected to the upstream, and the bag is placed on the outlet of the conveyor channel. The width of the conveyor channel gradually decreases, and the spring is compressed as it moves along the conveyor channel, eventually being fed into the bag. The springs in the bag are kept in a compressed state under the constraint of the bag.

[0004] In some cases, it is desirable to feed springs into a cloth bag with the axis in a vertical position (e.g., Chinese Patent 202110923535.6). Due to the large amount of compression required, it is difficult to use a conveyor channel with gradually decreasing width for conveying. Therefore, a method of conveying after compression is generally adopted. First, the spring is received from upstream and compressed into place. Then, the spring is transferred to the entrance of the conveyor channel. Finally, the spring is fed into the cloth bag along the conveyor channel. Before compression, the direction of the spring needs to be reversed so that the axis of the spring changes from horizontal to vertical. The efficiency of the entire process needs to be improved. Summary of the Invention

[0005] This application aims to at least solve one of the technical problems existing in the prior art. To this end, this application proposes a spring feeding device, bagged spring string manufacturing equipment and method, the spring feeding device helping to improve the manufacturing efficiency of bagged spring strings.

[0006] The spring feeding device according to this application includes a compression assembly and a first pushing assembly. The compression assembly defines a first conveying channel that extends laterally and includes a compression section and a holding section. The spring is compressed in the compression section and fed into a cloth bag in the holding section in a compressed state. The first pushing assembly includes a first actuator that pushes a steel wire on one side of the spring to cause the spring to enter the holding section from the compression section in the first conveying channel and to flip it before entering the holding section.

[0007] The spring feeding device provided in this application has at least the following technical effects: the spring is fed to the compression assembly in a transverse manner along its axis, and the first actuator moves in a transverse manner to efficiently compress the spring. At the same time, since the force applied by the first actuator is off-center from the spring, the force generates a torque that drives the spring to flip, so that the spring flips at the end of the compression process. The first actuator then pushes the flipped spring into the first conveying channel. Therefore, the spring feeding device can integrate the compression and flipping of the spring, reduce the steps required in the spring feeding process, and help improve the production efficiency of bagged spring strings.

[0008] According to some embodiments of this application, the compression assembly further includes a first baffle located at the end of the compression section and connected to the holding section. The first actuator pushes the spring against the first baffle to compress the spring. The first actuator applies a force to one side of the spring, and the first baffle applies a force to the other side of the spring to cause the spring to flip.

[0009] According to some embodiments of this application, the first baffle includes a first inclined surface that causes the first conveying channel to transition from a higher compression section to a lower holding section.

[0010] According to some embodiments of this application, the first baffle and the retaining section are provided with clearance grooves, which are used to avoid the movement path of the first actuator.

[0011] According to some embodiments of this application, the compression assembly includes a second baffle disposed at the entrance of the first conveying channel, located around the compression section, for limiting the radial deformation of the spring during compression.

[0012] According to some embodiments of this application, the first pushing component includes a transmission mechanism consisting of a sprocket and a chain, the first actuator is rotatably disposed on the chain, and the first pushing component further includes a third baffle for limiting the rotation of the first actuator during the pushing of the spring.

[0013] According to some embodiments of this application, the first actuator includes a push block and a locking plate. The push block is used to push the spring. The locking plate is rigidly connected to the push block and rotates together around a hinge point. During the process of pushing the spring, the third baffle abuts against the locking plate, preventing the push block from rotating.

[0014] According to some embodiments of this application, the card plate is provided with a card slot, and the chain is provided with a limiting shaft. The card slot is engaged with the limiting shaft to further restrict the rotation of the push block. After the spring enters the holding section, the card plate is no longer restricted by the third baffle, so the push block rotates around the hinge point. At the same time, the card slot disengages from the limiting shaft, so that the first actuator disengages from the spring and continues to circulate with the chain.

[0015] According to some embodiments of this application, the spring feeding device further includes a holding component and a second pushing component. The holding component defines a second conveying channel that extends longitudinally and coincides with the end of the first conveying channel. The outlet of the second conveying channel is connected to a cloth bag. The second pushing component includes a second actuator that is movable in the longitudinal direction to feed the spring in the second conveying channel into the cloth bag.

[0016] The bagged spring string manufacturing equipment provided in this application includes the spring string feeding device provided in this application.

[0017] The spring feeding method provided in this application includes receiving a spring, the axis of which is transverse; compressing the spring along the transverse direction and pushing it into a first conveying channel, and applying an eccentric thrust to the spring during the pushing process to cause the spring to flip during the pushing process.

[0018] According to some embodiments of this application, the spring is pushed out of the first conveying channel in the longitudinal direction, and the spring is fed into the cloth bag along a second conveying channel that is connected to the first conveying channel.

[0019] The bagged spring string manufacturing equipment provided in this application includes the spring feeding device provided in this application. The spring feeding method provided in this application can be implemented by the spring feeding device provided in this application. Therefore, the bagged spring string manufacturing equipment and the spring feeding method have the beneficial effects provided by the spring feeding device, which will not be elaborated here. Attached Figure Description

[0020] The accompanying drawings are used to provide a further understanding of the technical solutions disclosed in this application and form part of the specification. They are used together with the embodiments disclosed in this application to explain the technical solutions of this application and do not constitute a limitation on the technical solutions disclosed in this application.

[0021] Figure 1 This is a schematic diagram of the structure of the spring feeding device according to an embodiment of this application;

[0022] Figure 2 This is a schematic diagram of the structure of the spring feeding device according to an embodiment of this application;

[0023] Figure 3This is a schematic diagram illustrating the principle of the first actuator pushing the spring into the first conveying channel according to an embodiment of this application;

[0024] Figure 4 This is a schematic diagram illustrating the principle of the first actuator pushing the spring into the first conveying channel in some other embodiments of this application;

[0025] Figure 5 This is a schematic diagram of the structure of the bag spring manufacturing equipment according to an embodiment of this application.

[0026] Figure label:

[0027] Spring feeding device 1000, compression assembly 1100, first conveying channel 1110, first baffle 1120, first inclined surface 1121, second baffle 1130, bottom plate 1140, clearance groove 1150, first holding member 1160, first pushing assembly 1200, first actuating member 1210, push block 1211, second inclined surface 12111, clamping plate 1212, clamping groove 12121, sprocket 1220, chain 1230, third baffle 1240, limiting ring 1250, limiting shaft 1260, driver 1270, holding assembly 1300, second pushing assembly 1400;

[0028] Spring feeding device 2000, sewing device 3000, turning device 4000;

[0029] Spring 9000. Detailed Implementation

[0030] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0031] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0032] In the description of this application, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0033] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0034] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0035] In bagged spring sets, different packaging methods have different preferences for the orientation of the spring during feeding. For welded packaging, since the welding knife can clamp the welded part of the bag vertically, the axis of the fed spring can be either vertical or horizontal. Since the axis of the spring fed from the upstream spring coiling machine is horizontal, the spring is basically fed horizontally.

[0036] For sewn sealing, since springs fed horizontally cannot be compressed vertically, they will stretch the bag vertically, and the degree of stretching is uncontrollable (e.g., in scenarios using variable diameter springs). This negatively impacts the quality and consistency of the stitching. Related technologies tend to feed springs vertically, in which case the spring remains flattened by the pressure plate during sealing, preventing excessive tension on the bag and ensuring better consistency of stress on the bag.

[0037] However, in related technologies, feeding the spring into the vertical position requires multiple steps. First, the spring needs to be received and flipped from upstream, so that the spring's axis changes from horizontal to vertical. Then, the spring needs to be compressed along its axis. Next, the compressed spring needs to be transferred to the pushing position. Finally, the spring is pushed into the bag by the pushing component. This makes it difficult to improve the production efficiency of bagged spring strings.

[0038] Therefore, this application provides a spring string feeding device to improve the spring feeding efficiency, thereby improving the production efficiency of bagged spring strings.

[0039] This application further provides a bagged spring string manufacturing apparatus based on the spring string feeding device of this application, and a spring feeding method that can be implemented using the spring string feeding device of this application.

[0040] Reference Figure 1 , Figure 2 and Figure 3 According to the embodiments of this application, the spring feeding device 1000 includes a compression assembly 1100 and a first pushing assembly 1200. The compression assembly 1100 defines a first conveying channel 1110, which extends laterally and includes a compression section and a holding section. The spring is compressed in the compression section and fed into the cloth bag in a compressed state in the holding section. The first pushing assembly 1200 includes a first actuator 1210, which pushes a steel wire on one side of the spring to cause the spring to enter the holding section from the compression section in the first conveying channel 1110 and flips it before entering the holding section.

[0041] The height of the first conveying channel 1110 is less than the diameter of the spring. The first actuator 1210 is located on one side of the first conveying channel 1110 in the vertical direction. The first actuator 1210 can reciprocate in the horizontal direction to compress the spring 9000 in the horizontal direction and push it into the first conveying channel 1110. The first actuator 1210 is used to apply an eccentric force to the spring 9000 so that the spring 9000 flips during the pushing process.

[0042] Spring 9000 is fed to compression assembly 1100 in a transverse manner along its axis. First actuator 1210 moves in a transverse manner. Since the height of first conveying channel 1110 is less than the diameter of spring, spring 9000 cannot enter first conveying channel 1110 in its current posture. Under the action of the thrust of first actuator 1210 on spring 900 and the thrust of compression assembly 1100 on spring 9000, spring 9000 is compressed along its axis.

[0043] At the same time, since the force applied by the first actuator 1210 is off-center from the center of the spring 9000, the force will generate a torque that drives the spring 9000 to flip, so that the spring 9000 flips at the end of the compression process.

[0044] Since the first actuator 1210 is actively moving laterally, while the compression assembly 1100 is passively blocking and supporting the spring 9000, after flipping, the spring 9000 will be placed on the first actuator 1210, and the first actuator 1210 will then push the flipped spring into the first conveying channel 1110.

[0045] Therefore, the spring feeding device can integrate the compression and flipping of spring 9000, reducing the steps required in the spring feeding process and meeting the needs of vertically feeding spring 9000. The spring feeding device 1000 helps to improve the production efficiency of bagged spring strings.

[0046] Correspondingly, the spring feeding method provided in this application includes at least the following steps:

[0047] Step S110: Receive spring 9000, the axis of spring 9000 is laterally.

[0048] Step S120: Compress the spring 9000 laterally and push it into the first conveying channel 1110. During the pushing process, apply an eccentric thrust to the spring 9000 so that the spring 9000 flips during the pushing process.

[0049] Referring to the description of the spring feeding device, the spring feeding method can also improve the production efficiency of bagged spring strings, which will not be elaborated here.

[0050] It should be noted that the torque comes from the thrust of the first actuator 1210 on the spring 900 and the thrust of the compression component 1100 on the spring 9000. The greater the vertical distance between the two forces, the greater the torque generated, and the easier it is for the spring 9000 to flip, making the operation of the spring feeding device 1000 smoother.

[0051] Optionally, the compression assembly 1100 further includes a first baffle 1120, which is located at the end of the compression section and connected to the holding section. The first actuator 1210 pushes the spring 9000 toward the first baffle 1120 to compress the spring 9000. The first actuator 1210 applies a force to one side of the spring 900, and the first baffle 1120 applies a force to the other side of the spring to cause the spring 9000 to flip.

[0052] Exemplarily, in some embodiments, reference is made to Figure 3 The first actuator 1210 is located on the lower side, and the first baffle 1120 is located on the upper side. The width of the first actuator 1210 is smaller than the diameter of the spring 9000. The contact part between the first actuator 1210 and the spring 9000 is close to the lower side, while the width of the first baffle 1120 is smaller than the diameter of the spring 9000. The contact part between the first baffle 1120 and the spring 9000 is close to the upper side. Both forces are in the counterclockwise direction, so the resultant force generates a torque that makes the spring 9000 rotate counterclockwise.

[0053] Preferably, in order to guide the spring 9000 into the first conveying channel 1100, refer to Figure 3 In some embodiments, the first baffle 1120 includes a first inclined surface 1121, which transitions the first conveying channel 1100 from a higher compression section to a lower holding section. Even if the spring 9000 is not fully compressed during the flipping process, or if the spring 9000 has some rebound during the flipping process, the spring 9000 can still complete the remaining compression process under the guidance of the first inclined surface 1121, thereby smoothly entering the first conveying channel 1110, giving the spring feeding device 1000 better fault tolerance and adaptability.

[0054] In order to limit the rebound of the spring 9000 and also to prevent the spring wire at the end of the spring 9000 from detaching from the first actuator 1210, the first actuator 1210 may optionally include a limiting protrusion for limiting the spring 9000 after vertical limiting and flipping.

[0055] For example, refer to Figure 3 The limiting protrusion includes a second inclined surface 12111, which can apply an inclined force to the spring wire of the spring 9000, pointing towards the side where the first actuator 1210 is located. Specifically, Figure 3 In the illustrated embodiment, the force is applied at an angle downwards, thereby preventing the spring wire from slipping off the first actuator 1210.

[0056] Understandable, Figure 3 The illustration only shows one possible layout of the first baffle 1120 and the first actuator 1210. Without departing from the design concept of this application, the first baffle 1120 and the first actuator 1210 may also adopt other layouts, which are not limited by this application.

[0057] For example, Figure 4 An alternative layout is illustrated, where the first baffle 1120 does not have the first inclined surface 1121. While this design is slightly less effective than the first baffle 1120 with the first inclined surface 1121, it still meets the basic requirement of this application to compress, flip, and feed the spring 9000 into the first conveying channel 1110. Furthermore, in this layout, the first actuator 1210 is on the upper side and the first baffle 1120 is on the lower side. This does not affect the entry of the spring 9000 into the first conveying channel 1110. In other words, the spring feeding device 1000 can feed the spring according to the upstream spring feeding device 2000 (see reference 1000). Figure 5 The docking method allows for flexible adjustment of the layout of the first actuator 1210.

[0058] For a high compression ratio spring 9000, bending deformation is likely to occur during rapid compression. In order to ensure both compression efficiency and reliability, in some embodiments, the compression assembly 1100 includes a second baffle 1130. The second baffle 1130 is disposed at the entrance of the first conveying channel 1110 and located around the compression section to limit the radial deformation of the spring during the compression process.

[0059] In some embodiments, the second baffle 1130 extends laterally and is disposed at the entrance of the first conveying channel 1110. The second baffle 1130 is used to limit the upper limit spring 9000 in the radial direction.

[0060] Reference Figure 1For example, the second baffle 1130 can be a split design, with three second baffles 1130 surrounding the spring 9000. The upper second baffle 1130 is indicated by a dashed line to show the spring 9000 and the first actuator 1210 located below. The end of the second baffle 1130 near the upstream side is folded outward at an angle, which helps guide the spring 9000 into the space between the second baffles 1130. Of course, the second baffle 1130 can also be a one-piece design, and this application does not limit this to that.

[0061] Optionally, refer to Figure 2 and Figure 1 In some embodiments, the compression assembly 1100 further includes a base plate 1140 for receiving the spring 9000 from below to prevent the spring 9000 from falling off accidentally. The base plate 1140 and the second baffle 1130 together limit the spring 9000 in the radial direction.

[0062] It should be noted that the base plate 1140 is not necessary. Since the spring feeding device 2000 generally uses a spring seat with magnetic attraction to feed the spring 9000, the spring 9000 will not fall off even if the base plate 1140 is not provided. In some cases, such as when the first actuator 1210 is arranged on the upper side, the spring seat of the spring feeding device 2000 can also play a similar role to the base plate 1140.

[0063] Understandably, each part of the compression assembly 1100 needs to avoid the movement path of the first actuator 1210. Optionally, the first baffle 1120 and the holding section are provided with a clearance groove 1150, which is used to avoid the movement path of the first actuator 1210.

[0064] The clearance groove 1150 can be constructed in different ways; for example, refer to Figure 1 and Figure 2 First, two base plates 1140 are arranged at intervals, forming a clearance groove 1150 between them, allowing the first actuator 1210 to extend from the clearance groove 1150 and push the spring 9000 to move laterally; second, the first baffle 1120 also has a clearance groove 1150, and the first actuator 1210 passes through the first baffle 1120 from the clearance groove 1150, so that the first baffle 1120 and the first actuator 1210 together limit the spring 9000, preventing the spring 9000 from falling off the first actuator 1210; finally, in Figure 1 and Figure 2In the illustrated embodiment, the compression assembly 1100 includes a first retainer 1160 defining a first conveying channel 1110. The first retainer 1160 also has clearance slots 1150 communicating with the first conveying channel 1110, allowing the first actuator 1210 to enter and exit the first conveying channel 1110. The clearance slots 1150 collectively serve a clearance function, satisfying the path requirements for the first actuator 1210 to reciprocately compress and convey the spring 9000.

[0065] The first actuator 1210 can employ different reciprocating motion methods. For example, optionally, the first actuator 1210 can push the spring 9000 to the target position of the first conveying channel 1110 and then retract laterally along the original path. However, during the retraction process, the first actuator 1210 obstructs the conveying of the next spring 9000. Therefore, the spring feeding device 1000 can only receive a new spring 9000 from the spring feeding device 2000 after the first actuator 1210 has returned to its initial position. This makes it impossible to achieve parallel operation of each stage, which obviously leads to a reduction in the feeding efficiency of the spring 9000.

[0066] Optionally, the movement path of the first actuator 1210 may include an actuation section and a return section. The first actuator 1210 pushes the spring 9000 in the actuation section and avoids the conveying path of the spring 9000 and resets in the return section.

[0067] In other words, in the return section, the conveying routes of the first actuator 1210 and the spring 9000 are staggered. Therefore, the spring feeding device 1000 can be equipped with multiple first actuators 1210. During the return process of the current first actuator 1210, the next first actuator 1210 can simultaneously compress and convey the next spring 9000, making the feeding of the spring 9000 more efficient.

[0068] Specifically, the first pushing component 1200 includes a first driving mechanism for driving the first actuator 1210. After the spring 9000 pushes the first actuator 1210 into place, the first driving mechanism can drive the first actuator 1210 to exit the first conveying channel 1110 vertically, thereby offsetting the conveying path of the spring 9000. At the same time, the first driving mechanism also drives the first actuator 1210 to retract laterally, and then reset vertically after the lateral movement is in place.

[0069] For example, refer to Figure 2 and Figure 3 In some embodiments, the first drive mechanism includes a transmission mechanism consisting of a sprocket 1220 and a chain 1230, the first actuator 1210 is rotatably disposed on the chain 1230, and the first push assembly 1200 further includes a third baffle for limiting the rotation of the first actuator 1210 during the push of the spring.

[0070] The sprocket 1220 is driven to rotate by the driver 1270, which in turn causes the chain 1230 to drive the first actuator 1210 in a cyclical motion. In the actuation section, the limiting member locks the first actuator 1210, causing the first actuator 1210 to stand up and apply force to the spring 9000. In the return section, the limiting member releases the first actuator 1210, and as the chain 1230 moves, the first actuator 1210 rotates under force, thereby exiting the first conveying channel 1110. Then, the chain 1230 carries the first actuator 1210 back to its reset position, and the limiting member locks the first actuator 1210 again, so that the first actuator 1210 is in a state suitable for pushing the spring 9000.

[0071] For example, refer to Figure 2 The limiting components include a third baffle 1240 and a limiting ring 1250. The third baffle 1240 extends along the actuation section, and the limiting ring 1250 is disposed on the sprocket 1220 located upstream of the actuation section. During movement along the actuation section, the third baffle 1240 remains in contact with the first actuator 1210, thereby achieving a locking effect. As the first actuator 1210 rises into the actuation section, the limiting ring 1250 contacts the first actuator 1210, preventing the first actuator 1210 from tipping over under the action of gravity.

[0072] To improve the contact effect between the first actuator 1210 and the limiting member, the first actuator 1210 may optionally include a push block 1211 and a locking plate 1212. The push block 1211 is used to push the spring 9000. The locking plate 1212 is rigidly connected to the push block 1211 and rotates together around the hinge point. During the process of pushing the spring, the third baffle abuts against the locking plate 1212, preventing the push block 1211 from rotating.

[0073] For example, refer to Figure 2 In some embodiments, the push block 1211 and the locking plate 1212 form an angle of approximately 90°. In the actuation phase, the locking plate 1212 extends laterally, thereby increasing the contact area between the first actuator 1210 and the third baffle 1240 and improving the locking effect, while the push block 1211 extends vertically to push the spring 9000.

[0074] It is understandable that the length of push block 1211 ( Figure 3 (Indicated by L) The diameter needs to be smaller than that of spring 9000 so that the flipped spring 9000 can fit on push block 1211 without being pushed up by push block 1211. In addition, the rotation path of push block 1211 does not interfere with spring 9000, specifically it does not interfere with the flipped spring 9000, so that it can normally exit the first conveying channel 1110 through rotation.

[0075] Alternatively, the clamping plate 1212 is provided with a clamping groove 12121, and the chain 1230 is provided with a limiting shaft 1260. The clamping groove 12121 is clamped on the limiting shaft 1260 to further restrict the rotation of the push block 1211. After the spring enters the holding section, the clamping plate 1212 is no longer restricted by the third baffle, so the push block 1211 rotates around the hinge point. At the same time, the clamping groove 12121 disengages from the limiting shaft 1260, so that the first actuator 1210 disengages from the spring and continues to circulate with the chain 1230.

[0076] Understandably, the card plate 1212 has a slot 12121, and the limiting member includes a limiting shaft 1260, which is disposed on the chain 1230. The limiting shaft 1260 is located upstream of the first actuator 1210, and the slot 12121 is used to hook the limiting shaft 1260. The limiting shaft 1260 can play an auxiliary limiting role.

[0077] It needs to be emphasized that, in Figure 2 In the illustrated embodiment, this application uses sprocket 1220 and chain 1230 as examples to introduce one construction method of the actuation section and the return section, but the design of the spring feeding device 1000 is not limited to this.

[0078] For example, a conveyor belt can be used instead of the chain 1230 to achieve the cyclic reciprocating motion of the first actuator 1210. Alternatively, a linear motor can be used to drive the first actuator 1210 in lateral reciprocating motion, with the first actuator 1210 avoiding the conveying path of the spring 9000 through extension, retraction, or other means. Other feasible construction methods will not be elaborated here.

[0079] After the spring 9000 is compressed, it needs to be sent to the cloth bag. In some related technologies, the compressed spring 9000 also needs to be moved to a different position before it can be transported, which leads to a decrease in efficiency.

[0080] Therefore, optionally, refer to Figure 1 The spring feeding device 1000 also includes a holding assembly 1300 and a second pushing assembly 1400. The holding assembly 1300 defines a second conveying channel that extends longitudinally and coincides with the end of the first conveying channel 1110. The outlet of the second conveying channel is connected to a cloth bag. The second pushing assembly 1400 includes a second actuator that is movable longitudinally to feed the spring 9000 in the second conveying channel into the cloth bag in a compressed state.

[0081] By connecting the second conveying channel and the first conveying channel 1110, the spring 9000 leaving the first conveying channel 1110 directly enters the second conveying channel, eliminating the transfer process of the spring 9000 and helping to improve feeding efficiency.

[0082] Correspondingly, the spring feeding method may also include step S130: pushing the spring 9000 out of the first conveying channel 1110 along the longitudinal direction, and feeding the spring 9000 into the cloth bag along the second conveying channel that is connected to the first conveying channel 1110.

[0083] The bagged spring string manufacturing equipment of this application includes the spring feeding device 1000 of this application, and therefore also has the beneficial effects provided by the spring feeding device 1000.

[0084] For example, refer to Figure 5 In some embodiments, the bagged spring string manufacturing equipment uses a sewing method to encapsulate the spring 9000. The bagged spring string manufacturing equipment also includes a spring feeding device 2000, a fabric feeding device (not shown in the figure), a sewing device 3000, and a flipping device 4000.

[0085] The spring feeding device 2000 is connected between the spring coiling machine and the spring feeding device 1000. The spring 9000 produced by the spring coiling machine is received by the spring seat of the spring feeding device 2000 and fed to the spring feeding device 1000 in a transverse state along the axis.

[0086] The fabric feeding device provides a cloth bag to the sewing device 3000. The cloth bag has an opening in the longitudinal direction. The spring 9000, compressed by the spring feeding device 1000, is fed into the cloth bag in the longitudinal direction and is kept in a compressed state by the pressure plate of the sewing device 3000.

[0087] The sewing device 3000 sews in the transverse direction, thereby encapsulating the spring 9000 into the bag chamber of the cloth bag to form a bag spring string. After sewing, the flipping device 4000 drives the spring 9000 to flip, so that the axis of the spring 9000 becomes transverse again, and the spring 9000 rebounds in the transverse direction, thereby supporting the bag chamber and completing the production process of the bag spring string.

[0088] Of course, it is not limited to sewn-up bag spring string manufacturing equipment. As long as there is a need for bag spring string manufacturing equipment to convey springs 9000 in a vertical state, the spring feeding device 1000 of this application can be used and will have the corresponding beneficial effects.

[0089] In some alternative embodiments, the functions / operations mentioned in the block diagrams may not occur in the order shown in the operation diagrams. For example, depending on the functions / operations involved, two consecutively shown blocks may actually be executed substantially simultaneously, or the blocks may sometimes be executed in reverse order. Furthermore, the embodiments presented and described in the flowcharts of this application are provided by way of example to provide a more comprehensive understanding of the technology. The disclosed methods are not limited to the operations and logic flows presented herein. Alternative embodiments are contemplated in which the order of various operations is changed and sub-operations described as part of a larger operation are executed independently.

[0090] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A spring loading device, characterized by, The spring loading device comprises: a compression assembly defining a first conveying channel extending in a transverse direction, comprising a compression section and a holding section, the spring being compressed in the compression section and being fed into the holding section in a compressed state; a first pushing assembly comprising a first actuating member, the first actuating member pushing a side wire of the spring to make the spring turn over before entering the holding section from the compression section in the first conveying channel; the compression assembly further comprises a first baffle plate located at the end of the compression section connecting with the holding section, the first actuating member pushing the spring against the first baffle plate to make the spring compressed, the first actuating member applying a force to one side of the spring, and the first baffle plate applying a force to the other side of the spring to make the spring turn over; the first baffle plate comprises a first inclined surface to make the first conveying channel transition from the compression section with a higher height to the holding section with a lower height; the first baffle plate and the holding section are provided with a avoiding slot for avoiding the movement route of the first actuating member; the first pushing assembly comprises a transmission mechanism composed of a chain wheel and a chain, the first actuating member being rotatably arranged on the chain, and the first pushing assembly further comprises a third baffle plate for limiting the rotation of the first actuating member during the pushing of the spring; the first actuating member comprises a push block for pushing the spring and a clamping plate rigidly connected with the push block to rotate together around a hinge point, in the process of pushing the spring, the third baffle plate abutting against the clamping plate to make the push block unable to rotate.

2. The spring loading device of claim 1, wherein, the compression assembly comprises a second baffle plate arranged at the entrance of the first conveying channel and surrounding the compression section, for limiting the radial deformation of the spring during the compression of the spring.

3. The spring loading device of claim 1, wherein, the clamping plate is provided with a clamping slot, and the chain is provided with a limiting shaft, the clamping slot clamping on the limiting shaft to further limit the rotation of the push block, after the spring enters the holding section, the clamping plate is no longer limited by the third baffle plate, so that the push block rotates around the hinge point, and at the same time, the clamping slot is separated from the limiting shaft, so that the first actuating member is separated from the spring and continues to move circularly with the chain.

4. The spring loading device of claim 1, wherein, the spring loading device further comprises a holding assembly and a second pushing assembly, the holding assembly defining a second conveying channel extending in a longitudinal direction, the second conveying channel coinciding with the end of the first conveying channel, the outlet of the second conveying channel being connected with the bag, and the second pushing assembly comprising a second actuating member capable of moving in the longitudinal direction to feed the spring in the second conveying channel into the bag in a compressed state.

5. A pocketed spring string making apparatus characterized by, The bagged spring string making device comprises the spring loading device according to any one of claims 1 to 4.

6. A spring loading method using the spring loading device according to claim 4, characterized by, The spring loading method comprises: receiving a spring, the axis of the spring being in a transverse direction; compressing and pushing the spring into a first conveying channel in the transverse direction, and applying an eccentric pushing force to the spring to make the spring turn over during the pushing.

7. The spring loading method of claim 6, wherein, The spring is pushed out of the first conveying channel in the longitudinal direction and fed into the cloth bag along a second conveying channel which is in abutment with the first conveying channel.

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