A packaging device and a pocketed spring production machine

Abstract

The utility model discloses a kind of packaging device and bagged spring production machine, comprising: swing frame mechanism, including being set to swing axle swing frame, swing frame is equipped with packaging mechanism, packaging mechanism is used to separate and package into independent bag chamber along the longitudinal direction of transport direction in cloth bag in spring in cloth bag;Swing frame drive mechanism is used to drive swing frame to swing along longitudinal direction around swing axle to control the longitudinal width of bag chamber, push spring mechanism, located in the upstream of swing frame mechanism, for making spring enter cloth bag, and send spring to packaging mechanism.Position of packaging mechanism along the longitudinal direction of transport cloth bag can be adjusted when using, to control the longitudinal width of bag chamber, in other words, the utility model can change the width of bag chamber after welding by changing the amplitude of swing frame swing, to adapt to spring of different diameter size, to meet the packaging demand of different diameter spring, improve the versatility of entire device.

Description

Technical Field

[0001] This utility model is applicable to the field of bag spring production, and in particular relates to a packaging device and a bag spring production machine. Background Technology

[0002] Existing pocket spring production equipment involves heating and winding steel wire into springs, then packing them into non-woven bags. Finally, the springs within the bags are separated and sealed into individual compartments using welding or other methods, forming a bag spring string. However, because springs of different diameters require different bag widths, the sealing device in existing technologies is generally located within the spring pusher mechanism. This means welding is performed in the gap between the upper and lower push rods of the spring pusher mechanism, making pocket spring production equipment unsuitable for springs of varying diameters.

[0003] In summary, the problems existing in the relevant technologies urgently need to be solved. Utility Model Content

[0004] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art, and to provide a packaging device and a bag spring production machine.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] In a first aspect, a packaging device includes:

[0007] The swing frame mechanism includes a swing frame disposed on a swing shaft. The swing frame is provided with a sealing mechanism, which is used to separate and seal the springs in the cloth bag into independent bag chambers along the longitudinal conveying direction of the cloth bag.

[0008] A swing frame drive mechanism is used to drive the swing frame to swing longitudinally around the swing axis to control the longitudinal width of the bag chamber;

[0009] A spring pusher mechanism, located upstream of the swing frame mechanism, is used to allow the spring to enter the bag and deliver the spring to the packaging mechanism. The spring pusher mechanism includes an upper pusher assembly and a lower pusher assembly. The upper pusher assembly includes multiple upper push rods, and the lower pusher assembly includes multiple lower push rods. The upper push rods are arranged to form alternating first and second gaps, and the lower push rods are arranged to form alternating first and second gaps. The first gaps of the upper push rods and the first gaps of the lower push rods correspond vertically to jointly push the spring in the bag downstream. The second gaps of the upper push rods and the second gaps of the lower push rods correspond vertically to separate adjacent springs in the bag.

[0010] In conjunction with the first aspect, in some implementations of the first aspect, the packaging mechanism includes a welding blade and an ultrasonic mold head capable of relative movement, the welding blade and the ultrasonic mold head being used to separate and encapsulate the springs in the cloth bag into individual bag chambers by ultrasonic welding.

[0011] In combination with the first aspect and the above-described implementations, in some implementations of the first aspect, the swing frame includes a top beam, a bottom beam, and a guide shaft connecting the top beam and the bottom beam. The welding knife is mounted on the guide shaft via a first slide, and the ultrasonic transducer is mounted on the guide shaft via a second slide. The first slide and the second slide are offset along the axial direction of the guide shaft. The encapsulation mechanism includes an encapsulation drive assembly for driving the first slide and the second slide to move closer to or further away from each other along the guide shaft.

[0012] In combination with the first aspect and the above-described implementations, in some implementations of the first aspect, the encapsulated drive assembly includes a first crank-connecting rod mechanism and a second crank-connecting rod mechanism driven by the same motor, wherein the first crank-connecting rod mechanism is connected to the first slide and the second crank-connecting rod mechanism is connected to the second slide.

[0013] In a second aspect, a bag spring production machine includes the packaging device described in any implementation of the first aspect.

[0014] In conjunction with the second aspect, some implementations of the second aspect also include:

[0015] A conveying mechanism includes a first chain and magnetic seats, wherein the magnetic seats are installed at intervals on the first chain along the conveying direction of the first chain;

[0016] The limiting mechanism includes a second chain and limiting members. The limiting members are spaced apart on the second chain along the conveying direction of the second chain. The distance between two adjacent limiting members is equal to the distance between two adjacent magnetic seats. The first chain and the second chain have adjacent segments that are parallel to each other. The area between the adjacent segments that are parallel to each other is the limiting area. When the spring enters the limiting area with the first chain, its position is limited between the magnetic seat and the limiting members.

[0017] In combination with the second aspect and the above implementation methods, in some implementation methods of the second aspect, the magnetic base is provided with a first groove with an arc-shaped cross section, and a magnet is provided at the bottom of the first groove.

[0018] In conjunction with the second aspect and the above-described implementations, in some implementations of the second aspect, the conveying mechanism includes two first chains that are conveyed synchronously, and the magnetic seat is mounted across the two first chains; the limiting mechanism includes two second chains that are conveyed synchronously, and the limiting member is mounted across the two second chains.

[0019] In combination with the second aspect and the above implementation methods, in some implementation methods of the second aspect, the limiting member is provided with a second groove with an arc-shaped cross-section, and the diameter of the arc-shaped cross-section of the second groove decreases from the middle to both ends.

[0020] In conjunction with the second aspect and the above implementation methods, some implementation methods of the second aspect also include:

[0021] The compression mechanism includes two sets of toothed chains. In the limiting area, the two sets of toothed chains are located between the magnetic seat and the limiting member, and a gap from wide to narrow is formed between the two sets of toothed chains along the conveying direction.

[0022] In conjunction with the second aspect and the above-described implementations, in some implementations of the second aspect, the toothed chain is provided with a tensioning structure, the tensioning structure including a fixed plate, a movable sprocket, a connecting plate, a slider, and an elastic element. The toothed chain passes around the movable sprocket, the movable sprocket is mounted on the connecting plate, the connecting plate is mounted on the fixed plate via the slider, and the elastic element is connected between the connecting plate and the fixed plate to tension the toothed chain.

[0023] In combination with the second aspect and the above-described implementation, in some implementations of the second aspect, the end of the compression mechanism is provided with a stop extending to both sides perpendicular to the conveying direction.

[0024] In conjunction with the second aspect and the above-described implementations, in some implementations of the second aspect, the compression mechanism further includes a partition disposed in the interval and extending along the conveying direction.

[0025] In combination with the second aspect and the above implementation, in some implementations of the second aspect, the push spring mechanism is located at the downstream end of the compression mechanism to allow the spring to disengage from the end of the compression mechanism and enter the cloth bag. The upper push assembly includes two sets of third chains respectively located on both sides of the compression mechanism, and a plurality of upper push rods are mounted on the two sets of third chains. The lower push assembly is located below the upper push assembly. The lower push assembly includes two sets of fourth chains respectively located on both sides of the compression mechanism, and a plurality of lower push rods are mounted on the two sets of fourth chains. The portions of the third and fourth chains adjacent to each other constitute a conveying channel for the spring.

[0026] In combination with the second aspect and the above implementation, in some implementations of the second aspect, one end of the upper pushing component is provided with an upper gear shaft, and one end of the lower pushing component is provided with a lower gear shaft corresponding to the upper gear shaft. One end of the upper gear shaft is connected to the upper sprocket that drives the third chain, and the other end is connected to the upper gear. One end of the lower gear shaft is connected to the lower sprocket that drives the fourth chain, and the other end is connected to the lower gear. The upper gear and the lower gear mesh and are driven by the same motor. The upper pushing component can rotate upward around the upper gear shaft.

[0027] One of the above technical solutions has at least one of the following advantages or beneficial effects: The packaging mechanism of the packaging device of this patent is set on the swing frame. When in use, the push spring mechanism makes the spring enter the cloth bag and sends the spring to the packaging mechanism. During this process, the swing frame can be driven by the swing frame drive mechanism to swing around the swing axis longitudinally to adjust the position of the packaging mechanism along the longitudinal conveying direction of the conveying cloth bag, thereby controlling the longitudinal width of the bag chamber. In other words, this utility model can change the width of the bag chamber after welding by changing the swing amplitude of the swing frame to accommodate springs of different diameters, thereby meeting the packaging requirements of springs of different diameters and improving the versatility of the entire device.

[0028] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0029] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0030] Figure 1 This is an isometric view of an embodiment of the bag spring production machine of this utility model;

[0031] Figure 2 This is a side view of the structure of one embodiment of the bag spring production machine of this utility model;

[0032] Figure 3 This is a schematic diagram of an embodiment of the swing frame mechanism of this utility model;

[0033] Figure 4 This is a schematic diagram of one embodiment of the compression mechanism of this utility model;

[0034] Figure 5 This is a schematic diagram of an embodiment of the tensioning structure of this utility model. Detailed Implementation

[0035] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0036] In this utility model, when directions (up, down, left, right, front, and back) are described, it is only for the convenience of describing the technical solution of this utility model, and does not indicate or imply that the technical features referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0037] In this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," "exceeding," etc. are understood to exclude the stated number; "above," "below," "within," etc. are understood to include the stated number. In the description of this utility model, if "first" or "second" is used, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of the indicated technical features.

[0038] In this utility model, unless otherwise explicitly defined, terms such as "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; a fixed connection, a detachable connection, or an integrally formed connection; a mechanical connection, an electrical connection, or a connection capable of mutual communication; or the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model based on the specific content of the technical solution.

[0039] in, Figure 2 The reference orientation of the embodiments of this utility model is given below, in conjunction with Figure 2 The embodiments of this utility model will be described in the directions shown.

[0040] See Figures 1-3 The present invention provides a packaging device, including a swing frame mechanism 100, a swing frame drive mechanism 300, and a push spring mechanism 700. The swing frame mechanism 100 includes a swing frame 102 disposed on a swing shaft 101. The swing frame 102 is provided with a packaging mechanism 103. The packaging mechanism 103 is used to separate and package the springs 201 in the cloth bag 200 along the longitudinal conveying direction of the cloth bag 200 into independent bag chambers 202. The swing frame 102 can swing about the swing shaft 101 as an axis to adjust its posture, while the packaging mechanism 103 can adjust its position along the longitudinal conveying direction of the cloth bag 200 with the swing frame 102.

[0041] The swing frame drive mechanism 300 is used to drive the swing frame 102 to swing longitudinally around the swing axis 101 to change the position of the packaging mechanism 103 and control the longitudinal width of the bag chamber 202.

[0042] The spring pusher mechanism 700 is located upstream of the swing frame mechanism 100 and is used to allow the spring 201 to enter the bag 200 and send the spring 201 to the sealing mechanism 103. The spring pusher mechanism 700 includes an upper pusher assembly 701 and a lower pusher assembly 702. The upper pusher assembly 701 includes a plurality of upper push rods 704, and the lower pusher assembly 702 includes a plurality of lower push rods 714. The upper push rods 704 are arranged to form an alternating first gap L1 and a second gap L2, and the lower push rods are arranged to form an alternating first gap L1 and a second gap L2. The first gap of the upper push rods 704 and the first gap of the lower push rods 714 are vertically aligned to jointly push the spring 201 in the bag 200 downstream. The second gap of the upper push rods 704 and the second gap of the lower push rods 714 are vertically aligned to separate adjacent springs 201 in the bag 200.

[0043] See Figure 1 -he Figure 3 The packaging mechanism 103 of the packaging device of this patent is set on the swing frame 102. In use, the push spring mechanism 700 causes the spring 201 to enter the cloth bag 200 and sends the spring 201 to the packaging mechanism 103. During this process, the swing frame 102 can be driven to swing around the swing axis 101 longitudinally by the swing frame drive mechanism 300 to adjust the position of the packaging mechanism 103 along the longitudinal conveying direction of the conveying cloth bag 200, thereby controlling the longitudinal width of the bag chamber 202. In other words, this utility model can change the width of the welded bag chamber 202 by changing the swing amplitude of the swing frame 102 to accommodate springs 201 of different diameters, thereby meeting the packaging requirements of springs 201 of different diameters and improving the versatility of the entire device.

[0044] The sealing mechanism 103 can be a sewing mechanism, that is, the springs 201 in the cloth bag 200 are separated along the longitudinal conveying direction of the cloth bag 200 and sealed into independent bag chambers 202 by a sewing machine.

[0045] The packaging mechanism 103 can also employ an ultrasonic welding mechanism; for details, see [link to documentation]. Figure 3 The packaging mechanism 103 includes a welding knife 104 and an ultrasonic mold head 105 that are capable of relative movement. The welding knife 104 and the ultrasonic mold head 105 can be set in one or more sets. The welding knife 104 and the ultrasonic mold head 105 are used to separate the spring 201 in the cloth bag 200 and package it into an independent bag chamber 202 by ultrasonic welding.

[0046] In some embodiments, see Figure 3The swing frame 102 includes a top beam 106, a bottom beam 107, and a guide shaft 108 connecting the top beam 106 and the bottom beam 107. The welding knife 104 is mounted on the guide shaft 108 via a first slide 109, and the ultrasonic head 105 is mounted on the guide shaft 108 via a second slide 110. The first slide 109 and the second slide 110 are offset along the axial direction of the guide shaft 108. The first slide 109 and the second slide 110 restrict the movement path via the guide shaft 108. The packaging mechanism 103 includes a packaging drive assembly for driving the first slide 109 and the second slide 110 to move closer or further away from each other along the guide shaft 108. The first slide 109 and the second slide 110 further drive the welding knife 104 and the ultrasonic head 105 to move relative to each other along the movement path to achieve ultrasonic welding of the cloth bag 200 and form a weld.

[0047] Further, see Figure 3 The encapsulation drive assembly includes a first crank-connecting rod mechanism 111 and a second crank-connecting rod mechanism 112 driven by the same motor 110. The first crank-connecting rod mechanism 111 is connected to the first slide 109, and the second crank-connecting rod mechanism 112 is connected to the second slide 110. During operation, the motor 110 synchronously drives the first crank-connecting rod mechanism 111 and the second crank-connecting rod mechanism 112. However, because the cranks of the first crank-connecting rod mechanism 111 and the second crank-connecting rod mechanism 112 are opposite to each other, the first slide 109 and the second slide 110 can synchronously move in opposite directions along the guide shaft 108. In this embodiment, the encapsulation drive assembly uses two crank-connecting rod mechanisms driven by the same motor to ensure the consistency of the relative movement of the welding blade 104 and the ultrasonic mold head 105. That is, when the welding blade 104 reaches the welding position, the ultrasonic mold head 105 also reaches the welding position, and when the welding blade 104 moves away from the welding position, the ultrasonic mold head 105 also moves away from the welding position.

[0048] See Figure 1 , Figure 2 , Figure 3 The swing shaft 101 is located at the top of the swing frame 102 away from the encapsulation mechanism 103, while the swing frame drive mechanism 300 is located at the bottom of the swing frame 102. The swing frame drive mechanism 300 can be a cylinder, a lead screw and nut mechanism, a crank connecting rod mechanism, etc., to control the swing amplitude of the swing frame 102.

[0049] See Figure 1 , Figure 2The present invention also provides a bag spring production machine, including the packaging device in any of the above embodiments. The bag spring production machine, through a packaging device with a swing function, can change the width of the welded bag chamber 202 by altering the swing amplitude of the swing frame 102, thus accommodating springs 201 of different diameters and meeting the packaging requirements of springs 201 of different diameters, thereby improving the versatility of the entire device.

[0050] For springs 201 with a pitch greater than their waist diameter, increasing the compression amount when bagged can effectively improve the support of springs 201 and save steel wire material. However, high compression ratio springs 201 are very difficult to compress, and they will arch and bounce radially during the compression process. In particular, for longer springs 201 (free height greater than 420) that are compressed during the conveying process, they are more likely to bend and fall off.

[0051] To address the above problems, in some embodiments, see [reference] Figure 1 , Figure 2 The bag spring production machine also includes a conveying mechanism 400 and a limiting mechanism 500. The conveying mechanism 400 includes a first chain 401 and magnetic seats 402. The magnetic seats 402 are spaced apart on the first chain 401 along the conveying direction of the first chain 401. The limiting mechanism 500 includes a second chain 501 and limiting members 502. The limiting members 502 are spaced apart on the second chain 501 along the conveying direction of the second chain 501. The distance between two adjacent limiting members 502 is equal to the distance between two adjacent magnetic seats 402. The first chain 401 and the second chain 501 have adjacent parallel segments. The area between the adjacent parallel segments is the limiting area. When the spring 201 enters the limiting area with the first chain 401, its position is limited between the magnetic seat 402 and the limiting member 502. In this embodiment, by supporting the bottom of the spring 201 and limiting it in the conveying direction during the compression and conveying process, the spring 201 is not prone to arching and is prevented from falling off.

[0052] Further, see Figure 1 , Figure 2 The magnetic base 402 has a first groove with an arc-shaped cross-section, and a magnet is provided at the bottom of the first groove. In this embodiment, the magnetic base 402 can stably attract the spring 201 into the first groove through the magnet at the bottom, and further limit the spring 201 from both sides through the side walls of the first groove, so as to ensure that the spring 201 is not easy to arch or bounce during compression, thereby effectively preventing it from falling off.

[0053] In some embodiments, see Figure 1The conveying mechanism 400 includes two first chains 401 for synchronous conveying, and a magnetic seat 402 of a certain length, which is mounted across the two first chains 401. The limiting mechanism 500 includes two second chains 501 for synchronous conveying, and a limiting member 502 of a certain length, which is mounted across the two second chains 501. In this embodiment, the magnetic seat 402 forms multi-point support through the two first chains 401, and the limiting member 502 forms multi-point support through the two second chains 501, so that the magnetic seat 402 and the limiting member 502 will not tilt to one side during the compression process of the spring 201, thus ensuring stability during the compression process.

[0054] In some embodiments, see Figure 1 The limiting member 502 is provided with a second groove with an arc-shaped cross section. The diameter of the arc-shaped cross section of the second groove decreases from the middle to both ends. The second groove is spindle-shaped to adapt to the shape characteristics of the spring 201, which has a larger diameter in the middle and a smaller diameter at both ends.

[0055] In some embodiments, the bag spring production machine further includes a compression mechanism 600, which includes two sets of toothed chains 601. In the limiting region, the two sets of toothed chains 601 are located between the magnetic seat 402 and the limiting member 502, and a gap is formed between the two sets of toothed chains 601 that gradually narrows along the conveying direction. Specifically, the gap between the two sets of toothed chains 601 gradually narrows along the conveying direction. As the spring 201 passes through the limiting region, both ends are squeezed by the toothed chains 601 and gradually compressed. The limiting member 502 is used to limit the radial bending of the spring 201 during the compression process. After the spring 201 passes through the limiting region, it disengages from the conveying mechanism 400 and the limiting mechanism 500 and continues to be conveyed downstream by the compression mechanism 600 in a compressed state.

[0056] In some embodiments, see Figure 4 , Figure 5 The toothed chain 601 is equipped with a tensioning structure, which includes a fixed plate 602, a movable sprocket 603, a connecting plate 604, a slider 605, and an elastic element 606. The toothed chain 601 passes around the movable sprocket 603, which is mounted on the connecting plate 604. The connecting plate 604 is mounted on the fixed plate 602 via the slider 605. The elastic element connects the connecting plate 604 and the fixed plate 602 to tension the toothed chain 601. When the toothed chain 601 is slack, the movable end of the elastic element 606 drives the slider 605, the connecting plate 604, and the sprocket to move under the action of elastic force, thus tensioning the chain and ensuring that the toothed chain 601 can stably clamp and complete the compression of the spring 201.

[0057] In some embodiments, see Figure 4The end of the compression mechanism 600 is provided with a stop 607 extending to both sides perpendicular to the conveying direction. When the spring 201 is disengaged from the end of the compression mechanism 600, it can be limited by the stop 607, so that the position of the spring 201 in the bag 200 is limited.

[0058] In some embodiments, see Figure 4 The compression mechanism 600 also includes a partition 608, which is a plate or sheet with a certain thickness. The thickness direction of the partition 608 is the compression direction of the spring 201. The partition 608 is disposed in the gap and extends along the conveying direction. The partition 608 stands between the two sets of toothed chains 601 and is used to separate the steel wires of the spring 201 during the compression process, so as to prevent the steel wires from getting tangled together and unable to spring open after entering the bag 200.

[0059] In some embodiments, see Figure 1 , Figure 2 The push spring mechanism 700 is located at the downstream end of the compression mechanism 600 and is used to disengage the spring 201 from the end of the compression mechanism 600 and allow it to enter the cloth bag 200.

[0060] See Figure 1 , Figure 2 The upper pushing component 701 includes two sets of third chains 703 respectively disposed on both sides of the compression mechanism 600, and multiple upper push rods 704 mounted on the two sets of third chains 703, with the upper push rods 704 protruding from the conveying surface of the third chains 703. The lower pushing component 702 is located below the upper pushing component 701, and includes two sets of fourth chains 705 respectively disposed on both sides of the compression mechanism 600, with multiple lower push rods 714 mounted on the two sets of fourth chains 705, with the lower push rods 714 protruding from the fourth chains. The conveying surface of chain 705, with the adjacent portions of the third chain 703 and the fourth chain 705 forming the conveying channel 706 for the conveying spring 201, has a first gap L1 in the upper push rod 704 and a first gap L1 in the lower push rod 714 vertically aligned to jointly push the spring 201 in the bag 200 downstream. The second gap L2 in the upper push rod 704 and the second gap L2 in the lower push rod 714 vertically aligned to separate adjacent springs 201 in the bag 200. In this embodiment, the upper push rod 704 and the lower push rod 714 separate each spring 201 in the bag 200, ensuring that the multiple springs 201 in a compressed state are not entangled when conveyed downstream and spring open within the bag 200.

[0061] Further, see Figure 2The upper pushing component 701 has an upper gear shaft 707 at one end, and the lower pushing component 702 has a lower gear shaft 708 corresponding to the upper gear shaft 707 at one end. One end of the upper gear shaft 707 is connected to the upper sprocket 709 that drives the third chain 703, and the other end is connected to the upper gear 710. One end of the lower gear shaft 708 is connected to the lower sprocket 711 that drives the fourth chain 705, and the other end is connected to the lower gear 712. The upper gear 710 and the lower gear 712 mesh and are driven by the same motor 713, ensuring the synchronization of the third chain 703 and the fourth chain 705 and preventing the corresponding upper push rod 704 and lower push rod 714 from misaligning. At the same time, the upper pushing component 701 can be flipped upward around the upper gear shaft 707. The upper pushing component 701 and the lower pushing component 702 are connected by a movable buckle 715 at the flip-up end. In this embodiment, by using the upward-flipping upper pushing component 701, the maintenance of the push spring mechanism 700 can be facilitated.

[0062] Understandably, see Figure 1 , Figure 2 The bag spring production machine also includes a spring coiling head 800 and a horizontal sealing assembly 900. The spring coiling head 800 is used to wind steel wire into springs 201, and the horizontal sealing assembly 900 is used to weld fabric into long cylindrical bags 200 along the conveying direction of the springs 201. This enables the bag spring production machine to achieve fully automated production from steel wire to spring string.

[0063] In the description of this specification, references to terms such as "example," "embodiment," or "some embodiments" 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 the present invention. In this specification, 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.

[0064] Of course, the present invention is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A packaging device, characterized in that, include: The swing frame mechanism includes a swing frame disposed on a swing shaft. The swing frame is provided with a sealing mechanism, which is used to separate and seal the springs in the cloth bag into independent bag chambers along the longitudinal conveying direction of the cloth bag. A swing frame drive mechanism is used to drive the swing frame to swing longitudinally around the swing axis to control the longitudinal width of the bag chamber; A spring pusher mechanism, located upstream of the swing frame mechanism, is used to allow the spring to enter the bag and deliver the spring to the packaging mechanism. The spring pusher mechanism includes an upper pusher assembly and a lower pusher assembly. The upper pusher assembly includes multiple upper push rods, and the lower pusher assembly includes multiple lower push rods. The upper push rods are arranged to form alternating first and second gaps, and the lower push rods are arranged to form alternating first and second gaps. The first gaps of the upper push rods and the first gaps of the lower push rods correspond vertically to jointly push the spring in the bag downstream. The second gaps of the upper push rods and the second gaps of the lower push rods correspond vertically to separate adjacent springs in the bag.

2. The packaging device according to claim 1, characterized in that, The packaging mechanism includes a welding knife and an ultrasonic mold head that can move relative to each other. The welding knife and the ultrasonic mold head are used to separate and encapsulate the springs in the bag into individual bag chambers by ultrasonic welding.

3. The packaging device according to claim 2, characterized in that, The swing frame includes a top beam, a bottom beam, and a guide shaft connecting the top beam and the bottom beam. The welding knife is mounted on the guide shaft via a first slide, and the ultrasonic transducer is mounted on the guide shaft via a second slide. The first slide and the second slide are offset along the axial direction of the guide shaft. The packaging mechanism includes a packaging drive assembly for driving the first slide and the second slide to move closer or further apart from each other along the guide shaft.

4. The packaging device according to claim 3, characterized in that, The encapsulated drive assembly includes a first crank-connecting rod mechanism and a second crank-connecting rod mechanism driven by the same motor. The first crank-connecting rod mechanism is connected to the first slide, and the second crank-connecting rod mechanism is connected to the second slide.

5. A bag spring production machine, characterized in that, The packaging device includes any one of claims 1 to 4.

6. The bag spring production machine according to claim 5, characterized in that, Also includes: A conveying mechanism includes a first chain and magnetic seats, wherein the magnetic seats are installed at intervals on the first chain along the conveying direction of the first chain; The limiting mechanism includes a second chain and limiting members. The limiting members are spaced apart on the second chain along the conveying direction of the second chain. The distance between two adjacent limiting members is equal to the distance between two adjacent magnetic seats. The first chain and the second chain have adjacent segments that are parallel to each other. The area between the adjacent segments that are parallel to each other is the limiting area. When the spring enters the limiting area with the first chain, its position is limited between the magnetic seat and the limiting members.

7. The bag spring production machine according to claim 6, characterized in that, The magnetic base has a first groove with an arc-shaped cross-section, and a magnet is provided at the bottom of the first groove.

8. The bag spring production machine according to claim 6, characterized in that, The conveying mechanism includes two first chains for synchronous conveying, and the magnetic seat is mounted across the two first chains; the limiting mechanism includes two second chains for synchronous conveying, and the limiting member is mounted across the two second chains.

9. The bag spring production machine according to claim 6, characterized in that, The limiting member has a second groove with an arc-shaped cross-section, and the diameter of the arc-shaped cross-section of the second groove decreases from the middle to both ends.

10. The bag spring production machine according to claim 6, characterized in that, Also includes: The compression mechanism includes two sets of toothed chains. In the limiting area, the two sets of toothed chains are located between the magnetic seat and the limiting member, and a gap from wide to narrow is formed between the two sets of toothed chains along the conveying direction.

11. The bag spring production machine according to claim 10, characterized in that, The toothed chain is provided with a tensioning structure, which includes a fixed plate, a movable sprocket, a connecting plate, a slider, and an elastic element. The toothed chain passes around the movable sprocket, the movable sprocket is mounted on the connecting plate, the connecting plate is mounted on the fixed plate via the slider, and the elastic element is connected between the connecting plate and the fixed plate to tension the toothed chain.

12. The bag spring production machine according to claim 10, characterized in that, The end of the compression mechanism is provided with a stop extending to both sides perpendicular to the conveying direction.

13. The bag spring production machine according to claim 10, characterized in that, The compression mechanism further includes a partition disposed in the interval and extending along the conveying direction.

14. The bag spring production machine according to claim 10, characterized in that, The push spring mechanism is located at the downstream end of the compression mechanism and is used to disengage the spring from the end of the compression mechanism and allow it to enter the bag. The upper push assembly includes two sets of third chains respectively located on both sides of the compression mechanism, and multiple upper push rods are mounted on the two sets of third chains. The lower push assembly is located below the upper push assembly and includes two sets of fourth chains respectively located on both sides of the compression mechanism, and multiple lower push rods are mounted on the two sets of fourth chains. The adjacent portions of the third and fourth chains constitute a conveying channel for the spring.

15. The bag spring production machine according to claim 14, characterized in that, One end of the upper pushing component is provided with an upper gear shaft, and one end of the lower pushing component is provided with a lower gear shaft corresponding to the upper gear shaft. One end of the upper gear shaft is connected to the upper sprocket that drives the third chain, and the other end is connected to the upper gear. One end of the lower gear shaft is connected to the lower sprocket that drives the fourth chain, and the other end is connected to the lower gear. The upper gear and the lower gear mesh and are driven by the same motor. The upper pushing component can rotate upward around the upper gear shaft.

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