CN109110463B

CN109110463B - Bagged spring production equipment

Info

Publication number: CN109110463B
Application number: CN201810903365.3A
Authority: CN
Inventors: 叶如剑
Original assignee: Zhejiang Huajian Intelligent Equipment Co ltd
Current assignee: Zhejiang Huajian Intelligent Equipment Co ltd
Priority date: 2018-08-09
Filing date: 2018-08-09
Publication date: 2022-09-06
Anticipated expiration: 2038-08-09
Also published as: CN109110463A

Abstract

The invention discloses bagged spring production equipment which comprises a rack, a spring coiling machine and a spring conveying device, wherein the spring conveying device comprises a switching conveying device and a bagging conveying device, the bagging conveying device comprises a magnetic part, two first conveying baffle plates, two first conveying belt plates, two second conveying baffle plates and two second conveying belts, the magnetic part is arranged on at least one of the rack and the two second conveying baffle plates, and when the sum of the holding force of the two second conveying belts on a spring and the adsorption force of the magnetic part on the spring is greater than the holding force of the switching conveying device on the spring, the spring is separated from the switching conveying device between the two second conveying baffle plates. The bagged spring production equipment has the advantages of high reliability of spring separation, easy determination of the separation position and improvement of the production efficiency.

Description

Bagged spring production equipment

Technical Field

The invention relates to the technical field of bagged spring manufacturing, in particular to bagged spring production equipment.

Background

Pocketed springs, also commonly referred to as spring strings, are widely used for producing spring cores for mattresses and sofas, the spring strings having a plurality of springs, which are respectively located in pocket chambers of a spring pocket that are spaced apart from each other. In the production of springs using pocket spring production equipment, a spring coiling machine produces individual springs from wire, and then springs are transferred from the spring coiling machine to a spring pocket conveying mechanism by a spring transfer conveying mechanism, which conveys the springs into pockets and welds the pockets to encapsulate the springs, thereby producing a string of springs. In this process, the springs need to be reliably disengaged from the spring transfer conveyor and then received and conveyed by the spring bagging conveyor. In the related art, the spring is not reliably separated from the spring transfer conveying mechanism, and the separation position is difficult to determine.

Disclosure of Invention

The present application is made based on the discovery and recognition by the inventors of the following facts and problems existing in the related art:

document CN103879604A discloses a bagged spring production compression conveying mechanism, which includes a spring conveying mechanism and a spring compression conveying mechanism, wherein the spring conveying mechanism receives a spring from a spring coiling machine and then transfers the spring to the spring compression conveying mechanism, the spring conveying mechanism includes a track-shaped belt body, a magnetic attraction block for attracting the spring is arranged on the belt body, the spring compression conveying mechanism includes two baffles oppositely arranged on a rack, the distance between the two baffles is gradually reduced from the rear end to the front end (conveying direction), and conveying belts are respectively wound around the outer sides of the two baffles for conveying the spring along the conveying direction. Along with the rotation of the belt body of the spring conveying mechanism, the spring adsorbed on the spring conveying mechanism enters between the two baffles and is conveyed along the conveying direction by the belt body, the distance between the two baffles is gradually reduced along the conveying direction, so the spring is gradually compressed by the two baffles, after the spring is compressed to a certain degree, namely, the friction force between the spring and the conveying belt is greater than the holding force of the magnetic adsorption block on the spring, and the spring is separated from the spring transfer conveying mechanism and is continuously conveyed between the two baffles along the conveying direction by the conveying belt wound on the two baffles.

The pocket spring production compression conveying mechanism disclosed in the above document has the following problems: the spring is separated from the spring conveying mechanism by means of the friction force between the spring and the conveying belt, namely, the spring can be separated from the spring conveying mechanism only when the friction force between the spring and the conveying belt is larger than the adsorption force of the magnetic adsorption block to the spring. The compression amount of the spring between the two baffles influences the friction force, and only when the compression amount of the spring reaches a certain value, the friction force between the spring and the conveying belt is larger than the adsorption force of the magnetic adsorption block on the spring.

It is known to those skilled in the art that the amount of compression that the springs must compress before bagging is a requirement for mattress core design in order to design the softness and rigidity of the mattress core. That is, when designing the mattress core, in order to design the dimensions such as softness and thickness of the mattress core, the model of the spring wire, the length of the hair spring (the spring that is not compressed before bagging produced by the spring coiling machine), the compression amount of the spring and the tension of the bagged spring to the bag need to be designed. In other words, in the production of pocketed springs, the springs must be compressed by a certain amount of compression prior to bagging to meet design requirements. Thus, the amount of compression of the spring prior to bagging is limited by the pocketed spring design, rather than being set arbitrarily.

In the compression conveying mechanism for producing the pocket springs disclosed in the above documents, the compression amount of the springs should meet the design requirements of the pocket springs (mattress cores) on one hand, and also meet the requirement that the springs can be separated from the spring conveying mechanism on the other hand, that is, the compression amount of the springs is limited by two factors, so that the compression conveying mechanism for producing the pocket springs disclosed in the above documents has the problems that the separation of the springs from the spring conveying mechanism is unreliable, the separation positions are difficult to determine, and the produced pocket springs cannot meet the design requirements and the separation requirements at the same time.

In other words, in the above document, the compression amount of the spring is required to satisfy not only the requirement that the frictional force between the spring and the conveyor belt is larger than the attraction force of the magnetic attraction block of the spring conveying mechanism to the spring, but also the design requirement of the pocket spring.

It will be appreciated by those skilled in the art that in the above-mentioned document, the spring is compressed the most at the end of the spring where the distance between the two stops is the smallest, so that the friction between the spring and the conveyor belt is the greatest at the end of the two stops, at least this maximum friction (maximum compression) must be such that the spring will be able to disengage from the spring conveyor mechanism, i.e. the spring must disengage from the spring conveyor mechanism at the latest at the end of the spring where the distance between the two stops is the smallest. Further, this document clearly describes that the spring is separated from the spring conveying mechanism and then conveyed by the conveyor belt outside the shutters, that is, the spring is separated from the spring conveying mechanism before reaching the end where the distance between the shutters is minimum, in other words, the spring must be separated from the spring conveying mechanism before the amount of compression thereof reaches the maximum.

However, in the above document, if the spring compression amount required for the design of the pocket spring is smaller than the maximum compression amount of the spring at the end where the distance between the two baffles is the smallest, the spring compression amount cannot satisfy both the design requirement and the requirement that the spring is separated from the spring conveying mechanism. For example, the maximum compression amount of the spring required by the design of the pocket spring is 10 mm, while the compression amount of the spring is at least 20 mm for separating the spring from the spring conveying mechanism, and if the maximum compression amount of the spring is required to meet the design requirement (the compression amount is less than 10 mm), the separation of the spring from the spring conveying mechanism cannot be realized, whereas if the compression amount is required to meet the requirement for separating the spring from the spring conveying mechanism (the compression amount is at least 20 mm), the design requirement cannot be met.

Moreover, in the above document, since the spring is disengaged from the spring conveying mechanism only by the friction force between the spring and the conveying belt, the disengagement position of the spring between the two baffles is not easy to determine, and particularly, the disengagement position of the spring varies even though the rigidity of the steel wire for manufacturing the spring varies with the variation of the model of the spring.

In addition, the spring is separated from the spring conveying mechanism only by means of friction force between the spring and the conveying belt, the spring and the conveying belt are easy to slip, the reliability of separation of the spring and the reliability of conveying of the conveying belt to the spring are poor, subsequent bagging is affected, and the production efficiency is reduced.

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the bagged spring production equipment provided by the invention has the advantages that the compression amount of the spring can conveniently meet the separation requirement and the design requirement of the bagged spring, the spring separation reliability is high, the separation position is easy to determine, and the production efficiency is improved. .

The pocket spring production equipment comprises: a frame; the spring coiling machine is used for manufacturing a spring metal wire into a spiral spring; the spring conveying device comprises a switching conveying device and a bagging conveying device, the switching conveying device is used for receiving the spring from the spring coiling machine, the bagging conveying device is used for receiving the spring from the switching conveying device and conveying the spring along the conveying direction, the bagging conveying device comprises a magnetic part, two first conveying belts, two second conveying belts, two first conveying baffle plates arranged on the rack and two second conveying baffle plates arranged on the rack, one first conveying belt is wound on one first conveying baffle plate, the other first conveying belt is wound on the other first conveying baffle plate, one second conveying baffle plate is arranged in front of the one first conveying baffle plate, the other second conveying baffle plate is arranged in front of the other first conveying baffle plate, and the second conveying belt is wound on the second conveying baffle plate, the other second conveying belt is wound on the other second conveying baffle, the distance between the two first conveying baffles is gradually reduced along the conveying direction, the distance between the two second conveying baffles is kept unchanged along the conveying direction, the switching conveying device is arranged above the space between the two first conveying baffles and above the space between the two second conveying baffles, and the magnetic part is arranged on at least one of the rack and the two second conveying baffles; wherein the transfer conveying device conveys the spring between the two first conveying belts and drives the spring to move from the end with larger distance between the two first conveying baffles to the end with smaller distance along the conveying direction, the spring is gradually compressed as the distance between the two first conveying fences gradually decreases when moving between the two first conveying fences in the conveying direction, the spring is clamped by the two first conveyor belts and is simultaneously kept by the switching conveyor device to convey forwards from between the two first conveyor belts to between the two second conveyor belts, when the sum of the holding force of the two second conveying belts to the spring and the adsorption force of the magnetic piece to the spring is larger than the holding force of the transfer conveying device to the spring, the spring is separated from the transfer conveying device between the two second conveying baffles.

According to the pocket spring production equipment provided by the embodiment of the invention, the magnetic part is arranged, so that the spring is separated from the transfer conveying device through the adsorption force of the magnetic part to the spring, only the relation between the adsorption force of the magnetic part to the spring and the holding force of the transfer conveying device to the spring needs to be considered, and the limitation of the spring separation to the friction force between the spring and the conveying belt does not need to be considered. In the embodiment of the application, although a certain friction force exists between the spring and the two second conveyor belts, the friction force is naturally caused by the fact that the spring must be compressed before bagging, and although the friction force can assist the spring to be separated from the transfer conveyor device objectively, the relationship between the attraction force of the magnetic member on the spring and the holding force of the transfer conveyor device on the spring can be considered when the spring is separated from the transfer conveyor device. Therefore, the compression amount of the spring between the two second conveying baffle plates only needs to be considered to meet the design requirement of the bagged spring, and the requirement that the spring is separated from the compression amount (the friction force is in positive correlation with the compression amount) does not need to be considered. Through changing the parameter of magnetic part, for example, the magnetism size and the magnetic part number of magnetic part, can conveniently change the adsorption affinity to the spring to change the adsorption affinity of magnetic part to the spring, ensure that the spring can break away from switching conveyor reliably, can guarantee from this that the maximum compression capacity of spring satisfies bagged spring's designing requirement, also can guarantee that spring and switching conveyor break away from reliably, can not influence follow-up bagging-up, improved production efficiency. Moreover, due to the provision of the magnetic member, the position of disengagement of the spring between the two second conveyance fences can be easily determined.

In some embodiments, the first conveyor belt and the second conveyor belt each have a plurality of protrusions on a surface thereof for retaining the springs to increase a holding force of the springs.

In some embodiments, the protrusions are distributed in discrete dots on the surface of the first and second conveyor belts.

In some embodiments, one of the first conveyor belts is the same belt as one of the second conveyor belts, and the other of the first conveyor belts is the same belt as the other of the second conveyor belts.

In some embodiments, the magnetic member is a plurality of magnetic members, and the plurality of magnetic members are symmetrically arranged with respect to a center line of the two second conveying fences.

In some embodiments, the angle between two of the first conveying flights is adjustable.

In some embodiments, one of the first transport baffles is displaceable relative to the other second transport baffle in a transverse direction orthogonal to the transport direction.

In some embodiments, the magnetic member is disposed adjacent to the rear ends of the two second conveying fences and the disengaged position where the spring disengages from the transit conveyor is adjacent to the rear ends of the second conveying fences.

In some embodiments, the transfer conveyor device comprises a transfer conveyor belt, the transfer conveyor belt is in a runway shape and comprises a front arc-shaped section and a rear arc-shaped section, and an upper straight section and a lower straight section which are connected between the front arc-shaped section and the rear arc-shaped section, a plurality of magnetic suction blocks for sucking to hold the spring are arranged on the transfer conveyor belt at intervals, and when the sum of the holding force of the two second conveyor belts on the spring and the sucking force of the magnetic piece on the spring is greater than the sucking force of the magnetic suction blocks on the spring, the spring is separated from the magnetic suction blocks and is clamped by the two second conveyor belts to continue conveying along the conveying direction.

In some embodiments, the front end of the lower straight section of the switch over conveyor belt is aligned with or forward of the rear ends of the two second conveying flights.

Drawings

FIG. 1 is a schematic view of a spring delivery apparatus according to an embodiment of the present invention.

Fig. 2 is a partially enlarged view of a bagging conveyor according to an embodiment of the invention.

Fig. 3 is a cross-sectional view of a bagging transfer device according to an embodiment of the invention.

Reference numerals are as follows:

the bag conveying device comprises a bag conveying device 100, a first conveying baffle 1, a first conveying belt 2, a magnetic part 3, a protrusion 4, a second conveying baffle 5, a second conveying belt 6, a switching conveying device 200, a switching conveying belt 201, a conveying seat 202 and a spring 300.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are illustrative and intended to explain the present invention and should not be construed as limiting the present invention.

The pocket spring production equipment according to the embodiment of the invention comprises a frame (not shown), a spring coiling machine (not shown) and a spring conveying device, wherein the spring coiling machine and the spring conveying device are arranged on the frame. The spring coiling machine produces a helical spring from spring wire, and the spring conveyor receives the helical spring from the spring coiling machine and conveys the spring for bagging.

The spring feeding device of the pocket spring producing apparatus according to the embodiment of the present invention is described in detail below.

As shown in fig. 1-3, the spring conveying device according to some embodiments of the present invention includes a pocket conveyor 100 and a transfer conveyor 200, the transfer conveyor 200 receives a spiral spring 300 from a coil spring machine and transfers the spring 300 to the pocket conveyor 100, the pocket conveyor 100 receives the spring transferred by the transfer conveyor 200 and continues to convey the spring into a pocket along the conveying direction of the spring 300 (from the back to the front direction in fig. 1), and then performs welding packaging to make a pocket spring (i.e., a spring string).

The spring 300 is shown in the conveying direction of the bagging conveyor 100 from the rear to the front in fig. 1. Here, it should be understood that the terms "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

As shown in fig. 1 to 3, the bagging conveyor 100 includes two first conveyance baffles 1, two first conveyor belts 2, a magnetic member 3, two second conveyance baffles 5, and two second conveyor belts 6, the two first conveyance baffles 1 and the two second conveyance baffles 5 are provided on the rack, the two first conveyance baffles 1 are opposed to and spaced apart from each other, and the two second conveyance baffles 5 are opposed to and spaced apart from each other. In other words, the two first conveying fences 1 are each provided on the frame and opposed to each other in the lateral direction orthogonal to the conveying direction of the spring 300, and the two second conveying fences 5 are each provided on the frame and opposed to each other in the lateral direction orthogonal to the conveying direction of the spring 300. Here, the lateral direction is a direction orthogonal to the conveying direction of the spring 300, i.e., a direction orthogonal to the front-rear direction.

The first conveying baffle plate 1 and the second conveying baffle plate 5 are sequentially arranged in the backward-forward direction, the two first conveying baffle plates 1 and the two second conveying baffle plates 5 are arranged in a one-to-one correspondence manner, and the rear ends of the second conveying baffle plates 5 are adjacent to the front ends of the corresponding first conveying baffle plates 1. In other words, one second conveyance baffle 5 is disposed in front of one first conveyance baffle 1, and the rear end of the one second conveyance baffle 5 is adjacent to the front end of the one first conveyance baffle 1; the other second conveying baffle 5 is arranged in front of the other first conveying baffle 1, and the rear end of the other second conveying baffle 5 is adjacent to the front end of the other first conveying baffle 1. Here, it is to be understood that "adjacent" means that the rear end of the preceding baffle plate and the front end of the following baffle plate are not too far apart, and may touch or may be separated by a small distance.

A first conveying belt 2 is wound on each first conveying baffle 1. In other words, one first conveying belt 2 is wound on one first conveying baffle 1, the other first conveying belt 2 is wound on the other first conveying baffle 1, and the two first conveying baffles 1 and the two first conveying belts 2 are arranged in a one-to-one correspondence manner. A second conveyor belt 6 is wound on each second conveying baffle 5, in other words, one second conveyor belt 6 is wound on one second conveying baffle 5, the other second conveyor belt 6 is wound on the other second conveying baffle 5, and the two second conveying baffles 5 and the two second conveyor belts 6 are arranged in a one-to-one correspondence manner.

The distance between the two first conveying flights 1 decreases gradually in the conveying direction. In other words, the two first conveying fences 1 have a larger-distance head and a smaller-distance head, and the larger-distance head is at the rear end of the first conveying fence 1 and the smaller-distance head is at the front end of the first conveying fence 1. The distance between the two second conveyance fences 5 remains constant in the conveyance direction of the spring 300. In other words, the two second conveyance baffles 5 are arranged parallel to and spaced apart from each other. Here, it is to be understood that the distance between the two first conveyance baffles 1 is the distance between the two first conveyance baffles 1 in the lateral direction, and the distance between the two second conveyance baffles 5 is the distance between the two second conveyance baffles 5 in the lateral direction.

The switch conveyor 200 is disposed above between the two first conveying fences 1 and above between the two second conveying fences 5, whereby the switch conveyor 200 switches the spring 300 between the two first conveying fences 1 and between the two second conveying fences 5 of the bagging conveyor 100.

The magnetic member 3 is provided on at least one of the frame and the two second conveyance baffles 5. In other words, the magnetic member 3 may be provided on the frame, on one or both of the two second conveyance baffles 5, or on both of the frame and one or both of the two second conveyance baffles 5. In a specific embodiment, the magnetic members 3 are disposed on the two second conveying barriers 5 and symmetrically disposed with respect to a center line between the two second conveying barriers 5, and both ends of the spring 300 clamped between the two second conveying belts 6 can be attracted by the magnetic members 3.

The transfer conveyor 200 conveys the spring 300 between the two first conveyor belts 2, and drives the spring 300 to move from the end with the larger distance between the two first conveying barriers 1 to the end with the smaller distance along the conveying direction of the spring 300, when the spring 300 moves along the conveying direction of the spring 300 between the two first conveying barriers 1, the springs 300 are gradually compressed as the distance between the two first conveying fences 1 gradually decreases, the springs 300 are held by the two first conveying belts 2 and simultaneously held by the transfer conveyor 200 to be conveyed forward from between the two first conveying belts 2 to between the two second conveying belts 6, when the sum of the attraction force of the magnetic member 3 to the spring 300 and the holding force of the two second conveyor belts 6 to the spring 300 is greater than the holding force of the adaptor conveyor 200 to the spring 300, the spring 300 disengages the transit conveyor 200 between the two second conveyor flaps 5. It will be appreciated that the disengaged springs 300 are conveyed further forward by the two second conveyor belts 6.

In this embodiment, the bagging conveying device 100 includes two first conveying baffles 1, two first conveying belts 2, two second conveying baffles 5 and two second conveying belts 6, the two first conveying baffles 1 and the two first conveying belts 2 form a rear section of the bagging conveying device 100, the second conveying baffles 5 and the two second conveying belts 6 form a front section of the bagging conveying device 100, the transfer conveying device 200 is located above the front section and the rear section, the magnetic member 3 is arranged on the two second conveying baffles 5, and the spring 300 held by the two first conveying belts 2 and held by the transfer conveying device 200 at the same time is separated from the transfer conveying device 200 in the front section and continues to be held by the two second conveying belts 6 for continuous conveying.

According to the spring conveying device and the pocket spring production equipment with the spring conveying device, the magnetic members 3 for adsorbing the springs are arranged on the second conveying baffle 5, so that the springs are separated from the transfer conveying device 200 through the adsorption force of the magnetic members 3 on the springs 300 and the friction force between the two second conveying belts 6 and the springs 300. It can be understood that, since the friction force between the first conveyor belt 2 and the spring 300 is small, the spring 300 can be disengaged from the transfer conveyor 200 as long as the attraction force of the magnetic member 3 to the spring 300 is greater than the holding force of the transfer conveyor 200 to the spring 300, and the magnitude of the friction force is not generally considered.

Those skilled in the art will appreciate that the spring needs to be compressed prior to bagging by an amount that meets the design requirements of the pocketed spring. On the premise that the compression amount between the spring 300 and the two second conveying baffles 5 (namely the maximum compression amount of the spring 300: the compression amount of the spring 300 at the end with the smaller distance between the two first conveying baffles 1) meets the design requirement of the pocket spring (thus, the maximum friction force between the spring 300 and the second conveying belt 6 is determined), the adsorption force on the spring 300 can be changed by changing the parameters of the magnetic member 3, such as the magnetic size of the magnetic member 3, so that the requirement that the spring is separated from the transfer conveying device is met, the maximum compression amount of the spring 300 can be ensured to meet the design requirement of the pocket spring, the spring 300 can be ensured to be reliably separated from the transfer conveying device 200, subsequent bagging is not influenced, and the production efficiency is improved. Moreover, since the magnetic member 3 is provided, the escape position of the spring 300 between the two second conveyance fences 5 is easily determined.

In some specific embodiments, as shown in fig. 1 and 3, the magnetic member 3 is disposed adjacent to the rear ends of the two second conveying fences 5, and the disengaged position where the spring 300 is disengaged from the transit conveyor 200 is adjacent to the rear ends of the second conveying fences 5. In other words, the magnetic member 3 is disposed adjacent to the front end surface of the second conveyance shutter 5, and is disengaged from the transit conveyance device 200 at the position where the magnetic member 3 is located by the spring 300.

In some embodiments, the magnetic members 3 are provided in plurality, and the plurality of magnetic members 3 are symmetrically arranged with respect to a center line of the two second conveyance fences 5. For example, in a specific embodiment, there are two magnetic members 3, two magnetic members 3 are symmetrically disposed with respect to a center line of two second conveying fences 5, in other words, one magnetic member 3 is disposed on one second conveying fence 5, the other magnetic member 3 is disposed on the other two conveying fences 5, and the two magnetic members 3 are disposed oppositely in a lateral direction. It is to be understood herein that the meaning of "a plurality" is at least two, e.g., two, three, etc., unless explicitly specified otherwise.

In some specific embodiments, the magnetic members 3 on one second conveyance baffle 5 are provided on a side of the one second conveyance baffle 5 adjacent to the other second conveyance baffle 5, and the magnetic members 3 on the other second conveyance baffle 5 are provided on a side of the other second conveyance baffle 5 adjacent to the one second conveyance baffle 5. In other words, the magnetic members 3 on the two second conveyance fences 5 are each disposed adjacent to the spring 300 between the two second conveyance fences 5, whereby the attraction of the magnetic members 3 to the end of the spring 300 is further improved. Alternatively, the magnetic member 3 may be provided on the frame.

In some specific embodiments, the first conveyor belt 2 and the second conveyor belt 6 each have a plurality of protrusions 4 on the surface thereof, and the protrusions 4 are configured to retain the springs to increase the retention force of the springs 300 by the first conveyor belt 2 and the second conveyor belt 6. Here, it is to be understood that the holding force of the first conveyor belt 2 against the spring 300 should be understood as a resultant force of the frictional force of the first conveyor belt 2 against the spring 300 and the retaining force of the protrusions 4 on the surface of the first conveyor belt 2 against the end of the spring 300; the holding force of the second conveyor belt 6 against the spring 300 should be understood as a resultant force of the frictional force of the second conveyor belt 6 against the spring 300 and the retaining force of the protrusions 4 on the surface of the second conveyor belt 6 against the end of the spring 300. In this embodiment, by having the protrusions 4 on the surfaces of the first conveyor belt 2 and the second conveyor belt 6, the holding force of the conveyor belts on the spring 300 can be increased, thereby preventing the spring from slipping, improving the reliability of spring conveyance, and the acting force of the spring 300 when the spring 300 is detached from the transfer conveyor 200 can be increased, so that the detachment position of the spring 300 can be further easily determined and the detachment is more reliable.

In some specific embodiments, the protrusions 4 protrude from the surfaces of the first conveyor belt 2 and the second conveyor belt 6 that are in contact with the springs 300, and here, it is to be understood that the surface of the first conveyor belt 2 that the ends of the springs 300 can contact when the springs 300 are clamped between the two first conveyor belts 2 can be referred to as the conveying surface of the first conveyor belt 2, and thus, the protrusions 4 protrude from the conveying surface of the first conveyor belt 2. The surface of the second conveyor belt 6 that the end of the spring 300 can contact when the spring 300 is clamped between two second conveyor belts 6 can be referred to as the conveying surface of the second conveyor belt 6, whereby the protrusions 4 protrude from the conveying surface of the second conveyor belt 6.

In the embodiment shown in fig. 1 and 2, the conveying surfaces of the two first conveying belts 2 and the conveying surfaces of the two second conveying belts 6 are provided with a plurality of protrusions 4, the protrusions 4 are cylindrical, the plurality of protrusions 4 are uniformly spaced in a plurality of rows along the length direction of the first conveying belts 2, the protrusions 4 of each row are uniformly spaced in the width direction of the first conveying belts 2, and the protrusions 4 of the two first conveying belts 2 are arranged corresponding to each other in the transverse direction. Likewise, the plurality of protrusions 4 are arranged in a plurality of rows at regular intervals in the length direction of the second conveyor belt 6, the protrusions 4 of each row are arranged at regular intervals in the width direction of the second conveyor belt 6, and the protrusions 4 of the two second conveyor belts 6 are arranged corresponding to each other in the lateral direction.

In some embodiments, the protrusions 4 are distributed in discrete dots on the surface of the first conveyor belt 2 and the second conveyor belt 6. In other words, the protrusions 4 are distributed in discrete spots on the conveying surface of the first conveyor belt 2 and the conveying surface of the second conveyor belt 6. In some specific embodiments, the protrusions 4 are cylindrical or conical, it is understood that the present invention is not limited thereto, and those skilled in the art can determine the specific shape of the protrusions 4 according to actual needs, as long as the protrusions 4 protrude from the conveying surface of the conveying belt and can hold the conveying spring 300. For example, in other alternative embodiments, the protrusions 4 are elongated, i.e., the length of the protrusions 4 is much greater than the width of the protrusions 4. Specifically, the projections 4 are elongated in shape extending in the width direction of the conveyor belt. A plurality of elongated projections 4 are arranged at regular intervals along the length of the conveyor belt.

It will be understood that the protrusions 4 may be formed integrally with the belt or may be attached to the conveying surface of the belt after the belt is formed, for example, by bonding, the present invention is not limited thereto, and the manner of forming the protrusions 4 and the belt may be determined by those skilled in the art according to actual needs.

In some embodiments, one first conveyor belt 2 is the same belt as one second conveyor belt 6, and the other first conveyor belt 2 is the same belt as the other second conveyor belt 6. In other words, the first conveyor belt 2 and the corresponding second conveyor belt 6 are a single belt wound around the first conveyance baffle 1 and the second conveyance baffle 5 corresponding to the first conveyance baffle 1.

In some specific embodiments, as shown in fig. 1 and 3, the magnetic member 3 is disposed adjacent to the rear ends of the two second conveying fences 5, and the disengaged position where the spring 300 is disengaged from the transit conveyor 200 is adjacent to the rear ends of the second conveying fences 5. In other words, the magnetic member 3 is disposed at a position adjacent to the front end surface of the second conveyance shutter 5, and is detached from the transit conveyance device 200 at the position where the magnetic member 3 is located by the spring 300.

In some embodiments, the included angle between the two first conveying baffles 1 is adjustable, in this embodiment, by adjusting the included angle between the two first conveying baffles 1, springs of different types can be adapted, and the applicability of the bagging conveying device is improved.

In some embodiments, at least one of the two first transport flaps 1 is displaceable in a transverse direction orthogonal to the transport direction of the springs 300, in other words one first transport flap 1 is displaceable in a transverse direction relative to the other first transport flap 1, and/or the other first transport flap 1 is displaceable in a transverse direction relative to the one first transport flap to change the spacing between the two first transport flaps 1 in the transverse direction to accommodate springs 300 of different lengths. In some specific embodiments, at least one of the two second conveyance baffles 5 is displaceable in a lateral direction orthogonal to the conveyance direction of the spring 300 to adjust the spacing between the two second conveyance baffles 5 in the lateral direction. Here, it is to be understood that "displacement" is defined as the movement of the carriage from one position to another and can be fixed in order to achieve clamping of the spring between the two transport surfaces.

In some embodiments, as shown in fig. 1, the transit conveyor 200 comprises a transit conveyor belt 201, the transit conveyor belt 201 is race track-shaped, and the transit conveyor belt 201 comprises a front arc-shaped section, a rear arc-shaped section, an upper straight section and a lower straight section, wherein the upper straight section and the lower straight section are connected between the front arc-shaped section and the rear arc-shaped section, and the upper straight section is located above the lower straight section.

The transfer conveyer belt 201 is provided with a plurality of conveying seats 202 for positioning the springs 300, the plurality of conveying seats 202 are uniformly arranged along the circumferential direction of the transfer conveyer belt 201 at intervals, each conveying seat 202 is provided with a magnetic attraction block (not shown), namely, the magnetic attraction blocks are provided with a plurality of magnetic attraction blocks, the magnetic attraction blocks correspond to the plurality of conveying seats 202 one by one, the magnetic attraction blocks can be attracted to keep the springs 300, the transfer conveyer belt 201 operates to enable the springs 300 attracted by the magnetic attraction blocks in the lower straight section to move between the two first conveying baffle plates 1 and be compressed to convey the springs to the second conveyer belt 6, and when the sum of the holding force of the two second conveyer belts 6 on the springs 300 and the attraction force of the magnetic pieces 3 on the springs 300 is larger than the attraction force of the magnetic attraction blocks on the springs 300, the springs 300 are separated from the magnetic attraction blocks and are clamped by the two second conveyer belts 6 to continue conveying along the conveying direction.

In this embodiment, each transport base 202 can be attached with a spring 300 transferred from the spring coiling machine and transported by the adaptor conveyor 201. By adopting the magnetic adsorption mode, the structure is simple, and the transfer from the spring coiling machine and the transfer from the transfer conveying device 200 to the bagging conveying device 100 are simple and convenient. In other embodiments, the transfer conveyor 200 is not limited to conveying in the form of a conveyor belt, for example, the transfer conveyor 200 may be in the form of a conveyor chain or a conveyor wheel, and one skilled in the art can determine the transfer conveyor according to actual needs.

In some specific embodiments, the front end of the lower straight section of the transit conveyor belt 201 is aligned with the rear ends of the two second conveying fences 5, or the front end of the lower straight section is located forward of the rear ends of the two second conveying fences 5. In this embodiment, the disengagement of the spring 300 from the transit conveyor 200 between two second conveyor flaps 5 can be facilitated by defining the position of the lower straight section relative to the second conveyor flaps 5.

In some embodiments, the transfer conveyor 100 further includes a frame (not shown), two first conveying fences 1 are oppositely disposed on the frame, in other words, two first conveying fences 1 are both disposed on the frame, and the two first conveying fences 1 are opposite to each other in a transverse direction orthogonal to the conveying direction of the spring 300. In some specific embodiments, two second conveying flaps 1 are also provided opposite to each other on the frame, in other words, two first conveying flaps 1, two second conveying flaps 1 are provided on the frame, and two first conveying flaps 1 are opposite to each other in a transverse direction orthogonal to the conveying direction of the springs 300, and two second conveying flaps 5 are opposite to each other in a transverse direction orthogonal to the conveying direction of the springs 300.

A pocketed spring manufacturing apparatus according to an embodiment of the present invention will be described with reference to fig. 1 to 3.

As shown in fig. 1 to 3, a pocketed spring manufacturing apparatus according to an embodiment of the present invention includes a frame (not shown), a spring coiler (not shown) that forms a spring wire into a helical spring, and a spring conveyor that receives the helical spring from the spring coiler and conveys the spring.

The spring conveying device according to the embodiment of the invention comprises a bagging conveying device 100 and a transfer conveying device 200, wherein the transfer conveying device 200 receives a spiral spring 300 from a coil spring machine and conveys the spring 300 to the bagging conveying device 100, and the bagging conveying device 100 receives the spring conveyed by the transfer conveying device 200 and conveys the spring in a conveying direction from back to front to a subsequent bagging mechanism (not shown) for packaging and welding to form a spring string.

The bagging conveying device 100 includes two first conveying fences 1, two first conveying belts 2, two magnetic members 3, two second conveying fences 5, and two second conveying belts 6, the two first conveying fences 1 and the two second conveying fences 5 are both provided on a frame, the two first conveying fences 1 are opposed to and spaced from each other in a lateral direction orthogonal to the conveying direction of the spring 300, and the two second conveying fences 5 are opposed to and spaced from each other in the lateral direction orthogonal to the conveying direction of the spring 300. First conveying baffle 1 and second conveying baffle 5 set gradually along the direction from back to front, and baffle 5 one-to-one is carried to two first conveying baffles 1 and two second, and the rear end of first conveying baffle 1 is adjacent rather than the front end that the baffle 5 was carried to the second that corresponds. Each first conveying baffle 1 is wound with a first conveying belt 2, in other words, one first conveying belt 2 is wound on one first conveying baffle 1, and the other first conveying belt 2 is wound on the other first conveying baffle 1; a second conveyor belt 6 is wound around each second conveying apron 5, in other words, a second conveyor belt 6 is wound around one second conveying apron 5, and another second conveyor belt 6 is wound around another second conveying apron 5.

The distance between the two first conveying fences 1 decreases gradually in the direction from the rear to the front, in other words, the two first conveying fences 1 have one end with a larger distance therebetween and one end with a smaller distance therebetween, and the one end with the larger distance is at the rear end of the first conveying fence 1 and the one end with the smaller distance is at the front end of the first conveying fence 1. The distance between the two second conveyance fences 5 remains constant in the conveyance direction of the spring 300. The two magnetic members 3 are respectively arranged on the two second conveying baffle plates 5, the two magnetic members are symmetrically arranged relative to the central line of the channel between the two second conveying baffle plates 5, the two magnetic members 3 are respectively arranged at the rear ends of the two second conveying baffle plates 5, the magnetic member 3 on one second conveying baffle plate 5 is arranged at one side of the one second conveying baffle plate 5 adjacent to the other second conveying baffle plate 5, and the magnetic member 3 on the other second conveying baffle plate 5 is arranged at one side of the other second conveying baffle plate 5 adjacent to the one second conveying baffle plate 5.

One first conveyor belt 2 and one second conveyor belt 6 corresponding thereto are the same belt, and the other first conveyor belt 2 and the other second conveyor belt 6 are the same belt. Each belt has a plurality of cylindrical protrusions 4 on its surface, the plurality of protrusions 4 are uniformly spaced in a plurality of rows along the length direction of each belt, the protrusions 4 of each row are uniformly spaced along the width direction of each belt, and the protrusions 4 of the two belts are disposed corresponding to each other in the transverse direction to increase the holding force of the conveyor belt on the spring 300.

The anchor clamps between two first conveying baffle 1 are adjustable to be suitable for different model springs, improve the suitability. At least one of the two first conveying fences 1 is displaceable in a lateral direction orthogonal to the conveying direction of the spring 300 to adjust the spacing between the two first conveying fences 1 in the lateral direction. At least one of the two second conveyance fences 5 is displaceable in the lateral direction orthogonal to the conveyance direction of the spring 300 to adjust the spacing between the two second conveyance fences 5 in the lateral direction.

Switching conveyor 200 includes switching conveyer belt 201, and switching conveyer belt 201 is the runway form, and switching conveyer belt 201 includes preceding segmental arc, back segmental arc, goes up straight section and straight section down, wherein goes up straight section and straight section down and all connects between preceding segmental arc and back segmental arc, and goes up straight section and be located the top of straight section down, and switching conveyor 200 establishes between two first transport baffles 1 and the top between two second transport baffles 5.

The transfer conveyor belt 201 is provided with a plurality of conveyor bases 202 for positioning the springs 300, the plurality of conveyor bases 202 are uniformly arranged along the circumferential direction of the transfer conveyor belt 201 at intervals, the conveyor bases 202 are provided with magnetic attraction blocks (not shown) which can attract and hold the springs 300, the transfer conveyor belt 201 operates to enable the springs 300 attracted by the magnetic attraction blocks in the lower straight section to move from one end with larger distance between the two first conveying baffle plates 1 to one end with smaller distance along the conveying direction of the springs 300 between the two first conveying baffle plates 1, when the springs 300 move along the conveying direction of the springs 300, the springs 300 are gradually compressed along with the gradual reduction of the distance between the two first conveying baffle plates 1, the springs 300 are clamped by the two first conveyor belts 2 and are simultaneously kept by the transfer conveyor device 200 to be conveyed forward between the two second conveyor belts 6 from between the two first conveyor belts 2, when the sum of the holding force of the two second conveyor belts 6 on the spring 300 and the attracting force of the magnetic member 3 on the spring 300 is greater than the holding force of the transfer conveyor 200 on the spring 300, the spring 300 is disengaged from the transfer conveyor 200 at a position between the two second conveyor flaps 5 and adjacent to the rear end of the two second conveyor flaps 5. It will be appreciated that the disengaged springs 300 are conveyed further forward by the two second conveyor belts 6.

In the description of the specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. A pocket spring production apparatus, comprising:

a frame;

the spring coiling machine is used for manufacturing the spring metal wire into a spiral spring;

the spring conveying device comprises a switching conveying device and a bagging conveying device, the switching conveying device is used for receiving the spring from the spring coiling machine, the bagging conveying device is used for receiving the spring from the switching conveying device and conveying the spring along the conveying direction, the bagging conveying device comprises a magnetic part, two first conveying belts, two second conveying belts, two first conveying baffle plates arranged on the rack and two second conveying baffle plates arranged on the rack, one first conveying belt is wound on one first conveying baffle plate, the other first conveying belt is wound on the other first conveying baffle plate, one second conveying baffle plate is arranged in front of the one first conveying baffle plate, the other second conveying baffle plate is arranged in front of the other first conveying baffle plate, and the second conveying belt is wound on the second conveying baffle plate, the other second conveying belt is wound on the other second conveying baffle,

the distance between the two first conveying baffle plates is gradually reduced along the conveying direction, the distance between the two second conveying baffle plates is kept unchanged along the conveying direction, the switching conveying device is arranged above the space between the two first conveying baffle plates and above the space between the two second conveying baffle plates, and the magnetic part is arranged on at least one of the rack and the two second conveying baffle plates;

wherein the transfer conveying device conveys the spring between the two first conveying belts and drives the spring to move from the end with larger distance between the two first conveying baffles to the end with smaller distance along the conveying direction, the spring is gradually compressed as the distance between the two first conveying barriers gradually decreases when moving between the two first conveying barriers in the conveying direction, the spring is clamped by the two first conveyor belts and simultaneously is kept by the transfer conveyor to convey forwards from between the two first conveyor belts to between the two second conveyor belts, when the sum of the holding force of the two second conveying belts to the spring and the adsorption force of the magnetic piece to the spring is larger than the holding force of the transfer conveying device to the spring, the spring is separated from the transfer conveying device between the two second conveying baffles;

the surfaces of the first conveying belt and the second conveying belt are provided with a plurality of protrusions for clamping the springs to increase the holding force of the springs;

the protrusions are distributed in discrete spots on the surface of the first and second conveyor belts.

2. The pocketed spring production apparatus of claim 1, wherein one of said first conveyor belts is the same belt as one of said second conveyor belts, and the other of said first conveyor belts is the same belt as the other of said second conveyor belts.

3. The pocketed spring production apparatus of claim 1, wherein said magnetic member is plural, and plural magnetic members are provided symmetrically with respect to a center line of two of said second conveying shutter.

4. The pocket spring production apparatus of claim 1, wherein an angle between two of said first conveying flights is adjustable.

5. The pocket spring production apparatus of claim 1, wherein one said first conveying flap is displaceable relative to another second conveying flap in a transverse direction orthogonal to said conveying direction.

6. The pocket spring production apparatus of claim 1, wherein said magnetic member is disposed adjacent to the rear ends of both of said second conveying flaps and the disengaged position of said spring from said transfer conveyor is adjacent to the rear end of said second conveying flap.

7. A pocket spring production apparatus according to any one of claims 1 to 6, the switching conveyer comprises a switching conveyer belt which is in a runway shape and comprises a front arc-shaped section, a rear arc-shaped section, an upper straight section and a lower straight section which are connected between the front arc-shaped section and the rear arc-shaped section, the transfer conveyer belt is provided with a plurality of conveying seats for positioning the springs, the plurality of conveying seats are uniformly arranged at intervals along the circumferential direction of the transfer conveyer belt, the conveying seats are provided with magnetic attraction blocks which attract the springs to keep the springs, when the sum of the holding force of the two second conveying belts to the spring and the adsorption force of the magnetic piece to the spring is larger than the adsorption force of the magnetic adsorption block to the spring, the spring is separated from the magnetic attraction block and is clamped by the two second conveying belts to continue conveying along the conveying direction.

8. The pocket spring production apparatus of claim 7, wherein a front end of the lower straight section of said transfer conveyor belt is aligned with or forward of a rear end of said two second conveying flights.