CN213595882U

CN213595882U - Spring conveyor and have its pocket spring production facility

Info

Publication number: CN213595882U
Application number: CN202021666053.4U
Authority: CN
Inventors: 叶如剑
Original assignee: Zhejiang Huajian Intelligent Equipment Co ltd
Current assignee: Zhejiang Huajian Intelligent Equipment Co ltd
Priority date: 2020-08-12
Filing date: 2020-08-12
Publication date: 2021-07-02
Anticipated expiration: 2030-08-12

Abstract

The utility model provides a spring conveying device and a bagged spring production device with the same, wherein the spring conveying device comprises a spring receiving and conveying mechanism, a spring pushing and separating mechanism, a spring compressing and conveying mechanism and a transferring and conveying mechanism, wherein the spring pushing and separating mechanism is used for pushing a spring adsorbed on a magnetic part so as to separate the spring from the magnetic part; the spring compression conveying mechanism comprises two second annular conveying pieces, the transfer conveying mechanism comprises a third annular conveying piece and a plurality of receiving grooves, and the receiving grooves are arranged on the outer peripheral surface of the first annular conveying piece at intervals along the circumferential direction of the third annular conveying piece. Through setting up the spring and pushing away from mechanism and transfer conveying mechanism, the spring can be accurately from magnetic part by the propelling movement of spring push away the mechanism propelling movement to transfer conveying mechanism's accepting the groove in, and the spring is more reliable with the breaking away from of magnetic part, and the position of breaking away from sets for easily, and the fault rate reduces.

Description

Spring conveyor and have its pocket spring production facility

Technical Field

The utility model relates to a technical field is made to the spring in bags, specifically relates to a spring conveyor and spring production facility in bags.

Background

The bagged springs are generally used for manufacturing mattresses, sofa cushions and the like, and after springs are produced by a spring coiling machine, the springs are conveyed to a spring bagging device by a spring conveying device to be bagged, so that bagged spring strips are manufactured. The spring conveying device in the related art has the problems of unreliable spring separation and unstable conveying, and has the need of improvement.

SUMMERY OF THE UTILITY MODEL

The present invention aims at solving at least one of the technical problems in the related art to a certain extent.

For this reason, the utility model discloses an embodiment provides a spring conveyor, includes: the spring receiving and conveying mechanism comprises a first annular conveying piece and a plurality of magnetic components for adsorbing springs, and the magnetic components are arranged on the outer peripheral surface of the first annular conveying piece at intervals along the circumferential direction of the first annular conveying piece; the spring pushing-away mechanism is used for pushing a spring adsorbed on the magnetic part to enable the spring to be separated from the magnetic part; the spring compression conveying mechanism comprises two second annular conveying members which are opposite to each other and are arranged at intervals, and the distance between the two second annular conveying members is reduced from the first end of the second annular conveying member to the second end of the second annular conveying member; and the transfer conveying mechanism comprises a third annular conveying part and a plurality of bearing grooves, the bearing grooves are arranged on the outer peripheral surface of the first annular conveying part at intervals along the circumferential direction of the third annular conveying part, the spring pushed away by the spring pushing-away mechanism from the magnetic part falls into the bearing grooves, the third annular conveying part conveys the springs in the bearing grooves from the first ends of the two second annular conveying parts to a position between the two second annular conveying parts and drives the springs in the bearing grooves to translate for a preset distance towards the second ends of the two second annular conveying parts, and the two second annular conveying parts convey and gradually compress the springs in the bearing grooves to enable the springs to be separated from the bearing grooves.

The spring conveying device provided by the embodiment of the utility model is provided with the spring pushing mechanism and the transferring and conveying mechanism, the spring can be pushed down by the spring pushing mechanism from the magnetic part accurately and fall into the bearing groove of the transferring and conveying mechanism, the separation of the spring and the magnetic part is more reliable, and the separation position is easy to set; in addition, the transfer conveying mechanism can continuously and stably convey the springs to the spring compression conveying mechanism, the overall stability of the operation of the spring conveying device is improved, and the failure rate is reduced.

In some embodiments, the first endless conveying element is an endless conveyor belt or an endless conveyor chain, and/or the second endless conveying element is an endless conveyor belt or an endless conveyor chain, and/or the third endless conveying element is an endless conveyor belt or an endless conveyor chain.

In some embodiments, the first endless transport element, the second endless transport element, and the third endless transport element are all race track-shaped.

In some embodiments, the apparatus further comprises two support plates corresponding to the two second annular conveying members, respectively, and the second annular conveying members are arranged around the support plates.

In some embodiments, the receiving groove is U-shaped, the bottom wall of the U-shaped receiving groove is flat and the opening of the U-shaped receiving groove is enlarged.

In some embodiments, the spring push-off mechanism includes a base, a push plate, and a driver mounted on the base and coupled to the push plate.

In some embodiments, the push plate is V-shaped or circular arc-shaped, and the driver drives the push plate to move in a vertical direction.

In some embodiments, the actuator is one of a pneumatic cylinder, a hydraulic cylinder, and a linear motor.

In some embodiments, the number of the spring pushing-off mechanisms is two, and the two spring pushing-off mechanisms respectively push two ends of one spring adsorbed on the magnetic component to separate the spring from the magnetic component.

The embodiment of the utility model provides a spring production facility in bags is further provided, including wind spring mechanism with the utility model provides a spring conveyor, spring conveyor's spring accepts conveying mechanism and is used for following wind spring mechanism accepts the spring.

Drawings

FIG. 1 is a schematic perspective view of a pocket spring production device according to an embodiment of the present invention

Fig. 2 is a schematic side view of a pocket spring production apparatus according to an embodiment of the present invention.

Fig. 3 is a schematic side view of a pocketed spring production facility according to an embodiment of the invention, showing a spring push-off mechanism pushing a spring off of a spring-receiving conveyor mechanism.

Fig. 4 is a schematic side view of a pocketed spring production facility according to an embodiment of the invention, showing a spring push-off mechanism pushing a spring into a receiving slot of a transfer conveyor.

Fig. 5 is a schematic side view of a pocketed spring manufacturing apparatus according to an embodiment of the present invention, wherein the spring pushing mechanism is shown to return after pushing the spring into the receiving groove.

Fig. 6 is a schematic side view of a pocket spring production facility according to an embodiment of the present invention, in which a transfer conveyor conveys springs into a compression conveyor and the springs are separated from a receiving groove of the transfer conveyor.

Fig. 7 is a schematic top view of a compression conveyor and a transfer conveyor according to an embodiment of the invention.

In the figure:

1-a spring;

10-a spring receiving and conveying mechanism; 11-a first endless transport member; 12-a magnetic component;

20-spring push-off mechanism; 21-a base; 22-a push plate; 23-a driver;

30-spring compression conveying mechanism; 31-a second endless conveying member; 34-a support plate;

40-a transfer conveying mechanism; 41-a third endless transport member; 42-a receiving groove;

50-coil spring mechanism.

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 drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

The present invention is made based on the discovery and recognition by the inventors of the following facts and problems:

the related art in the field describes a compression conveying mechanism for producing bagged springs, wherein the spring conveying mechanism conveys the springs between two baffles of the spring compression conveying mechanism and drives the springs to move from one end with a larger distance between the two baffles to the other end with a smaller distance between the two baffles, the springs are gradually compressed along with the gradual reduction of the distance between the two baffles, and the springs are separated from the spring conveying mechanism after being compressed to a certain degree and conveyed by the spring compression conveying mechanism. In other words, when the friction force between the spring and the two baffle plates is larger than the magnetic adsorption force of the spring conveying mechanism to the spring, the spring is separated from the spring conveying mechanism.

The inventor of the present application finds, through research, that in the above-mentioned scheme, because the spring separation spring conveying mechanism needs to depend on the relationship between the friction force between the spring and the baffle and the magnetic adsorption force of the spring conveying mechanism to the spring, and the friction force is influenced by many factors, such as the degree of compression of the spring, the friction coefficient between the spring and the baffle, the size of the included angle between the two baffles, and the like, the magnetic adsorption force of the spring conveying mechanism to the spring is influenced by the spring material and the magnetic part of the spring conveying mechanism, and the included angle between the two baffles influences the compression amount of the spring, and in the production of the pocket spring, the compression amount of the spring cannot be set at will, thereby causing the position of the spring separation spring conveying mechanism to be difficult to design and determine, the separation of the spring from the spring conveying mechanism is unreliable, the spring conveying mechanism drives the spring to run between the two, The problems of spring arching, jumping out of the two baffle plates and the like are easy to occur.

Therefore, the embodiment of the utility model provides a spring production facility in bags. Referring to fig. 1-7, the bagged spring production equipment according to the embodiment of the present invention includes a spring coiling mechanism 50 and a spring conveying device, and a spring receiving and conveying mechanism 10 of the spring conveying device is used for receiving a spring 1 from the spring coiling mechanism 50.

The spring conveying apparatus according to the embodiment of the present invention is described below.

The utility model discloses spring conveyor includes that conveying mechanism 10, spring are accepted from mechanism 20, spring compression conveying mechanism 30 and transfer conveying mechanism 40 to the spring.

As shown in fig. 1, the spring receiving conveyor mechanism 10 includes a first endless conveyor member 11 and a plurality of magnetic members 12. A plurality of magnetic members 12 are arranged on the outer peripheral surface of the first endless conveying member 11 at intervals in the circumferential direction of the first endless conveying member 11. The magnetic member 12 is used for receiving and attracting the spring 1 made of the coil spring mechanism 50. For example, as shown in fig. 2, the first endless conveying member 11 rotates clockwise, and the plurality of magnetic members 12 are driven to rotate in the circumferential direction of the first endless conveying member 11, so that the plurality of magnetic members 12 sequentially attract and receive the spring 1. Preferably, the plurality of magnetic members 12 are equally spaced.

Here, the magnetic component should be understood in a broad sense, for example, the magnetic component 12 may be integrally made of a permanent magnet, and alternatively, the magnetic component may include a housing and a permanent magnet disposed in the housing, and may also include a fixing base and a permanent magnet fixed on the fixing base.

As shown in fig. 1 to 6, the spring push-off mechanism 20 is configured to push the spring 1 attached to the magnetic member 12 at a predetermined position so that the spring 1 is disengaged from the magnetic member 12.

As shown in fig. 1 and 7, the spring compression conveying mechanism 30 includes two second annular conveying members 31, the two second annular conveying members 31 are disposed opposite to and spaced apart from each other, and the distance between the two second annular conveying members 31 gradually decreases from a first end (front end in fig. 2) of the second annular conveying member 31 toward a second end (rear end in fig. 2). The spring 1 is transported and compressed between the two second endless transport elements 31.

As shown in fig. 1 to 7, the transfer conveying mechanism 40 includes a third endless conveying member 41 and a plurality of receiving grooves 42. A plurality of receiving grooves 42 are arranged on the outer peripheral surface of the first annular conveying member 41 at intervals in the circumferential direction of the third annular conveying member 41. The arrangement of the plurality of receiving grooves 42 on the third endless conveying member 41 may be similar to the arrangement of the plurality of magnetic members 12 on the first endless conveying member 11.

The spring 1 pushed away from the magnetic part 12 by the spring pushing-away mechanism 20 falls into the receiving groove 42, and the third annular conveying member 41 conveys the spring 1 in the receiving groove 42 from the first ends of the two second annular conveying members 31 to between the two second annular conveying members 31 and drives the spring 1 in the receiving groove 42 to translate a predetermined distance towards the second ends of the two second annular conveying members 31. The two second endless conveying members 31 convey and gradually compress the spring 1 in the receiving groove 42 to disengage the spring 1 from the receiving groove 42, so that the transfer conveying mechanism 40 completes the transfer of the received spring 1 between the two second endless conveying members 31. The spring 1 having been released from the receiving groove 42 is further conveyed rearward between the two second endless conveying members 31 to perform the bagging operation.

It is understood that the spring 1 pushed down from the magnetic component 12 by the spring pushing-off mechanism 20 may fall into the receiving groove 42 by its own weight, or the spring pushing-off mechanism 20 may push the spring 1 into the receiving groove 42.

Further, the spring pushing-away mechanism 20 can be flexibly installed, for example, the spring pushing-away mechanism 20 can be fixed on a rack of a bagged spring production device, a rack of the spring receiving and conveying mechanism 10, a rack of the spring compressing and conveying mechanism 30, or an additional rack separately provided, and only the spring 1 can be pushed to separate the spring 1 from the magnetic component 12.

According to the utility model discloses spring conveyor, the spring pushes away from mechanism 20 and can accurately promote the spring that adsorbs on magnetic part to can make the spring break away from the spring and accept conveying mechanism, the spring is more reliable with breaking away from of magnetic part, breaks away from the position and sets for easily.

In addition, the spring separated from the magnetic part can fall into the bearing groove by means of the gravity of the spring or is pushed into the bearing groove by the spring pushing mechanism, the third annular conveying piece drives the spring in the bearing groove to be between the two second annular conveying pieces of the spring compression conveying mechanism, the two second annular conveying pieces clamp the spring to convey backwards, the spring is separated from the bearing groove in the process of conveying backwards, then the spring is gradually compressed, and therefore the transfer of the spring from the spring bearing conveying mechanism to the spring compression conveying mechanism is more reliable, therefore, the separation of the spring from the spring bearing conveying mechanism, the transfer of the separated spring to the spring compression conveying mechanism and the conveying compression operation of the spring in the spring compression conveying mechanism are not interfered with each other, and the reliability of the spring conveying of the spring compression conveying mechanism is guaranteed.

In some embodiments, the angle between the two second endless conveying members 31 is adjustable so as to vary the speed at which the spring 1 is compressed, the greater the angle, the faster the spring 1 is compressed, and the smaller the angle, the slower the spring 1 is compressed. The included angle between the two second annular conveying members 31 is adjustable, so that the compression conveying requirements of the springs 1 with different lengths can be met.

In some embodiments, the first endless conveying element 11 is an endless conveyor belt or an endless conveyor chain, similarly, the second endless conveying element may also be an endless conveyor belt or an endless conveyor chain, and similarly, the third endless conveying element may also be an endless conveyor belt or an endless conveyor chain.

As shown in fig. 2 to 6, the first endless conveying element 11, the second endless conveying element 31, and the third endless conveying element 41 are all shaped like a race track. In other words, any one of the first endless conveying member 11, the second endless conveying member 31, and the third endless conveying member 41 includes two straight sections opposed to each other and semicircular sections connected to both ends of the two straight sections, respectively. Alternatively, the first and second endless conveying

members

11, 31 may also be oval, circular, etc.

As shown in fig. 7, the spring compression conveying mechanism 30 further includes two supporting plates 34, and the two supporting plates 34 are respectively in one-to-one correspondence with the two second annular conveying members 31, that is, one second annular conveying member 31 is disposed around one supporting plate 34, and the other second annular conveying member 31 is disposed around the other supporting plate 34. The supporting plate 34 can support the second annular conveying member 31 and the spring 1 between the second annular conveying members 31, and the supporting plate 34 gradually compresses the spring 1 as the distance between the two second annular conveying members 31 is reduced. Alternatively, the spring compression conveying mechanism 30 may be provided without the support plate 34, in which case the spring 1 is gripped and compressed by the second endless conveying member 31.

As shown in FIG. 2, in some embodiments, the receiving groove 42 is U-shaped, the bottom wall of the U-shaped receiving groove 42 is flat, and the opening of the U-shaped receiving groove 42 is enlarged, so that the spring 1 can enter the receiving groove 42 more easily.

As shown in fig. 1-6, in some embodiments, the spring push-off mechanism 20 includes a base 21, a push plate 22, and a driver 23. The driver 23 is mounted on the base 21 and connected to the push plate 22. The base 21 may be mounted on the frame of the spring-loaded conveyor mechanism 10 or may be mounted on a separate frame, provided that the driver 23 is able to push the spring 1 with the pusher 22 at a predetermined position.

In some embodiments, the actuator 23 may be a pneumatic cylinder, a hydraulic cylinder, or a linear motor. The push plate 22 may be V-shaped or circular arc-shaped, and the driver 23 drives the push plate 22 to move in a vertical direction, which is the direction a in fig. 2-6. It is understood that the moving direction of the push plate 22 is not limited to the vertical direction, and the vertical direction is only one embodiment of the present disclosure, as long as the push plate can push the spring 1 to disengage from the magnetic part 12.

In some embodiments, the number of the spring pushing-off mechanisms 20 may be one or more, if only one spring pushing-off mechanism 20 is provided, the spring pushing-off mechanisms 20 push the springs 1 attached to the magnetic component 12 one by one, and if a plurality of spring pushing-off mechanisms 20 are provided, the plurality of spring pushing-off mechanisms 20 push the plurality of springs 1 attached to the magnetic component 12 simultaneously and detach from the magnetic component 12, in which case, the plurality of spring pushing-off mechanisms 20 are arranged at intervals along the length direction of the conveying mechanism 10.

A plurality of spring pushing-off mechanisms 20 may also be arranged at intervals in the width direction of the conveying mechanism 10, whereby the plurality of spring pushing-off mechanisms 20 collectively push one spring 1. In a specific embodiment, the number of the spring pushing-off mechanisms 20 is two, and the two spring pushing-off mechanisms 20 respectively push the two ends of one spring 1 adsorbed on the magnetic component 12 at the same time to separate the spring 1 from the magnetic component 12.

A spring feeding device according to one specific example of the present invention is described below with reference to fig. 1 to 7.

According to the utility model discloses specific embodiment's spring conveyor includes: a spring receiving conveying mechanism 10, a spring pushing-off mechanism 20, a spring compressing conveying mechanism 30, a transfer conveying mechanism 40 and a coil spring mechanism 50.

Specifically, the spring receiving conveyor mechanism 10 includes a first endless conveyor member 11 and a plurality of magnetic members 12, the plurality of magnetic members 12 being arranged on the outer peripheral surface of the first endless conveyor member 11 at intervals in the circumferential direction of the first endless conveyor member 11. The spring pushing-away mechanism 20 is disposed adjacent to the front end of the spring receiving and conveying mechanism 10, and is used for pushing the spring 1 adsorbed on the magnetic part 12 to separate the spring 1 from the magnetic part 12. The spring pushing-off mechanism 20 includes a base 21, a pushing plate 22, and a cylinder mounted on the base 21 and connected to the pushing plate 22.

The spring compression conveying mechanism 30 includes two second annular conveying members 31 and support plates 34 corresponding to the two second annular conveying members 31 one to one, one second annular conveying member 31 is provided around one support plate 34, and the other second annular conveying member 31 is provided around the other support plate 34. The spacing between the two second endless conveying members 31 decreases from between a first end (front end in fig. 2) of the second endless conveying members 31 toward a second end (rear end in fig. 2).

The transfer conveyance mechanism 40 includes a third endless conveyance member 41 and a plurality of receiving grooves 42, the plurality of receiving grooves 42 being arranged on the outer peripheral surface of the first endless conveyance member 41 at intervals in the circumferential direction of the third endless conveyance member 41.

The first annular conveying element 11, the second annular conveying element 31 and the third annular conveying element 41 are all track-shaped annular conveying belts, and the included angle between the two second annular conveying elements 31 is adjustable so as to adapt to the compression conveying requirements of springs 1 with different lengths.

The operation of the pocketed spring manufacturing apparatus according to the embodiment of the present invention will be described with reference to fig. 2 to 7.

As shown in fig. 2, the coil spring mechanism 50 continuously winds and cuts the wire to form individual springs 1, the formed springs 1 are received by the spring receiving conveyor mechanism 10, and the magnetic member 12 of the spring receiving conveyor mechanism 10 attracts the springs 1.

As shown in fig. 3, when the spring 1 is conveyed to the position of the spring push-off mechanism 20, the spring push-off mechanism 20 pushes the spring 1 off the spring receiving conveyance mechanism 10, so that the spring 1 is disengaged from the magnetic member 12.

As shown in fig. 4, the spring pushing-away mechanism 20 pushes the spring 1 into one of the receiving grooves 42 of the transfer conveyance mechanism 40. Subsequently, as shown in fig. 5, the spring separation mechanism 20 pushes the spring 1 into the receiving groove 42 and then returns.

As shown in fig. 6, the spring 1 in the receiving groove 42 is conveyed between the two second annular conveying members 31 and is gradually compressed by the two second annular conveying members 31, and when the receiving groove 42 carrying the spring 1 moves to the rear end of the third annular conveying member 41, the spring 1 starts to turn downward, and the spring 1 is pressed by the two second annular conveying members 31, so that the spring 1 gradually separates from the receiving groove 42 and is further conveyed by the two second annular conveying members 31.

The above operation is circulated, whereby the springs 1 are continuously conveyed into the two second endless conveying members 31, and then bagging is performed, to make the bagging springs.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like mean 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 present disclosure. 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, 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 without departing from the scope of the present invention.

Claims

1. A spring conveyor apparatus, comprising:

the spring receiving and conveying mechanism comprises a first annular conveying piece and a plurality of magnetic components for adsorbing springs, and the magnetic components are arranged on the outer peripheral surface of the first annular conveying piece at intervals along the circumferential direction of the first annular conveying piece;

the spring pushing-away mechanism is used for pushing a spring adsorbed on the magnetic part to enable the spring to be separated from the magnetic part;

the spring compression conveying mechanism comprises two second annular conveying members which are opposite to each other and are arranged at intervals, and the distance between the two second annular conveying members is reduced from the first end of the second annular conveying member to the second end of the second annular conveying member;

and the transfer conveying mechanism comprises a third annular conveying part and a plurality of bearing grooves, the bearing grooves are arranged on the outer peripheral surface of the first annular conveying part at intervals along the circumferential direction of the third annular conveying part, the spring pushed away by the spring pushing-away mechanism from the magnetic part falls into the bearing grooves, the third annular conveying part conveys the springs in the bearing grooves from the first ends of the two second annular conveying parts to a position between the two second annular conveying parts and drives the springs in the bearing grooves to translate for a preset distance towards the second ends of the two second annular conveying parts, and the two second annular conveying parts convey and gradually compress the springs in the bearing grooves to enable the springs to be separated from the bearing grooves.

2. The spring conveying device according to claim 1, characterized in that the first endless conveying element is an endless conveyor belt or an endless conveyor chain, and/or the second endless conveying element is an endless conveyor belt or an endless conveyor chain, and/or the third endless conveying element is an endless conveyor belt or an endless conveyor chain.

3. The spring delivery device of claim 1, wherein the first, second and third endless delivery members are racetrack shaped.

4. The spring conveying apparatus according to claim 1, further comprising two support plates corresponding to the two second endless conveying members, respectively, the second endless conveying members being disposed around the support plates.

5. The spring transfer device of claim 1 wherein said socket is U-shaped, the bottom wall of said U-shaped socket is flat and the opening of said U-shaped socket is enlarged.

6. The spring delivery apparatus of any of claims 1-5, wherein the spring push-off mechanism comprises a base, a push plate, and a driver mounted on the base and coupled to the push plate.

7. The spring feeding device according to claim 6, wherein the push plate has a V-shape or a circular arc shape, and the driver drives the push plate to move in a vertical direction.

8. The spring transfer assembly of claim 6 wherein the actuator is one of a pneumatic cylinder, a hydraulic cylinder, and a linear motor.

9. The spring conveying device according to claim 1, wherein the number of the spring pushing-off mechanisms is two, and the two spring pushing-off mechanisms respectively push both ends of one spring adsorbed to the magnetic member to separate the spring from the magnetic member.

10. A pocket spring production apparatus comprising a spring coiling mechanism and a spring conveyor apparatus according to any one of claims 1 to 9, the spring conveyor apparatus having a spring receiving conveyor mechanism for receiving springs from the spring coiling mechanism.