A device and method for transmitting a string of pocket springs

Abstract

The present invention discloses a device and method for transmitting a bagged spring string, the method for transmitting a bagged spring string comprising the following steps: transmitting a continuous bagged spring strip along a conveying direction, the continuous bagged spring strip being formed by connecting a plurality of bagged spring strings in sequence, and adjacent bagged spring strings being distinguished by marks; counting the springs of the continuous bagged spring strip passing through a counting position; detecting whether there is a spring bagging failure: when a spring bagging failure is detected, detecting the mark and cutting off the continuous bagged spring strip based on the detected mark to form a bad bagged spring string with bad spring bagging, and discarding the bad bagged spring string; when a spring bagging failure is not detected, cutting off the continuous bagged spring strip in sequence based on the count to form a plurality of normal bagged spring strings independent of each other. The method for transmitting a bagged spring string of the present invention ensures the quality of the bagged spring core and improves the comfort of use.

Description

Technical Field

[0001] The present invention relates to the technical field of spring manufacturing, and more particularly to a device and method for transmitting a bagged spring string. Background Art

[0002] Pocket springs are widely used in the production of spring cores for mattresses and sofas. When making the pocket spring core, the continuous pocket spring strips are cut into pocket spring strings of a certain length, which are then conveyed in sequence by a conveyor and pushed from the conveyor to a core assembly device by a pushing mechanism. The pocket spring strings pushed onto the core assembly device are sprayed with glue by a glue gun so that adjacent pocket spring strings are bonded together to form a spring core.

[0003] However, when spring pocketing is poor in a continuous pocket spring strip, such as spring defects or the spring is not pocketed but forms an empty pocket, the quality of the pocket spring core is poor, affecting the comfort of use. Summary of the invention

[0004] To this end, the present invention proposes, on the one hand, a method for transmitting a string of bagged springs. The method can detect whether there is poor spring bagging during the process of transmitting the string of bagged springs, and discard the string of bagged springs with poor spring bagging when poor spring bagging is detected, thereby ensuring the quality of the bagged spring core and improving the comfort of use.

[0005] Another aspect of the present invention provides a device for transmitting a string of pocket springs.

[0006] The method for conveying a string of bagged springs according to an embodiment of the first aspect of the present invention comprises the following steps: conveying a continuous strip of bagged springs along a conveying direction, the continuous strip of bagged springs being formed by connecting a plurality of bagged spring strings in sequence, and adjacent bagged spring strings being distinguished by marks; counting the springs of the continuous strip of bagged springs passing a counting position; and detecting whether there is poor spring bagging: when poor spring bagging is detected, detecting the mark and cutting off the continuous strip of bagged springs based on the detected mark to form a poor bagged spring string with poor spring bagging, and discarding the poor bagged spring string; when poor spring bagging is not detected, cutting off the continuous strip of bagged springs based on the counting sequence to form a plurality of normal bagged spring strings independent of each other.

[0007] The method for transmitting a string of bagged springs according to an embodiment of the present invention can detect whether there is poor spring pocketing in a continuous strip of bagged springs. When poor spring pocketing is detected, marks for distinguishing adjacent strings of bagged springs are detected, and the continuous strip of bagged springs is cut off based on the marks to form a poor string of bagged springs with poor spring pocketing, and the poor string of bagged springs is discarded, thereby ensuring the quality of the bagged spring core and improving the comfort of use.

[0008] In some embodiments, the markings are intervals between adjacent pocket spring strings, and the intervals are greater than the spacing between adjacent springs in the pocket spring string.

[0009] In some embodiments, the mark is a front mark provided on the front-end spring pocket of each of the pocket spring strings and / or a rear mark provided on the rear-end spring pocket of each of the pocket spring strings.

[0010] In some embodiments, the marking is a color marking.

[0011] In some embodiments, the number of pockets in the plurality of pocket spring strings is the same.

[0012] In some embodiments, when poor spring pocketing is detected, the conveying speed of the continuous strip of pocket springs is reduced before the continuous strip of pocket springs is cut off, and the conveying speed of the continuous strip of pocket springs is restored after the continuous strip of pocket springs is cut off.

[0013] In some embodiments, the detection of whether there is poor spring bagging includes: measuring the length of a bagged spring string with a predetermined number of springs passing through the counting position; determining whether the measured length is the same as a predetermined length, if the predetermined length is different from the measured length, determining that there is poor spring bagging, and if the predetermined length is the same as the measured length, determining that there is no poor spring bagging.

[0014] In some embodiments, the detecting whether there is poor spring bagging includes: directly detecting whether there is poor spring bagging through a sensor.

[0015] In some embodiments, the poor spring bagging is at least one of an empty bag, a spring collapse in the bag, or a bag not tightly sealed resulting in spring extension.

[0016] According to an embodiment of the second aspect of the present invention, a device for transmitting a bagged spring string comprises: a conveying device, the conveying device conveys a continuous bagged spring strip along a conveying direction, the continuous bagged spring strip is formed by connecting a plurality of bagged spring strings in sequence, and adjacent bagged spring strings are distinguished by marks; a counting device, the counting device counts the springs of the continuous bagged spring strip passing through a counting position; a first detection device, the first detection device detects whether there is a spring bagging failure; a second detection device, the second detection device detects the mark when the first detection device detects the spring bagging failure; a cutting device, the cutting device cuts the continuous bagged spring strip based on the mark detected by the second detection device to form a defective bagged spring string with spring bagging failure when the first detection device detects the spring bagging failure, and cuts the continuous bagged spring strip based on the counting sequence of the counting device to form a plurality of normal bagged spring strings independent of each other when the first detection device does not detect the spring bagging failure; and a discarding device, the discarding device discards the defective bagged spring string.

[0017] In some embodiments, the device for transmitting pocket spring strings further comprises a marking device, which marks the front-end spring pocket of each pocket spring string or the rear-end spring pocket of each pocket spring string.

[0018] In some embodiments, the marking device is a color marking device.

[0019] In some embodiments, the markings are intervals between adjacent pocket spring strings, and the intervals are greater than the spacing between adjacent springs in the pocket spring string.

[0020] In some embodiments, the first detection device includes a measuring device and a controller, the measuring device measures the length of a string of pocket springs having a predetermined number of springs passing through the counting position, and the controller determines whether the measured length is the same as a predetermined length.

[0021] In some embodiments, the second detection device is a sensor, and the sensor directly detects whether there is a spring bagging problem. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 1 is a front view schematic diagram of a device for conveying a string of pocket springs according to an embodiment of the present invention, wherein an empty bag is not conveyed on the device.

[0023] Figure 2 yes Figure 1 Schematic top view of a device for transmitting a string of pocket springs.

[0024] Figure 3is a front view schematic diagram of a device for conveying a string of pocket springs according to an embodiment of the present invention, wherein an empty bag is located on a conveying device and a second detection device does not detect a mark.

[0025] Figure 4 yes Figure 3 Schematic top view of a device for transmitting a string of pocket springs.

[0026] Figure 5 is a front view schematic diagram of a device for conveying a string of pocket springs according to an embodiment of the present invention, wherein an empty bag is located on a conveying device and a second detection device detects a mark.

[0027] Figure 6 yes Figure 5 Schematic top view of a device for transmitting a string of pocket springs.

[0028] Figure 7 1 is a front view schematic diagram of a device for transmitting a string of pocket springs according to an embodiment of the present invention, wherein a cutting device is aligned with a connection portion between adjacent strings of pocket springs.

[0029] Figure 8 yes Figure 7 Schematic top view of a device for transmitting a string of pocket springs.

[0030] Fig. 9 1 is a front view schematic diagram of a device for conveying a string of pocket springs according to an embodiment of the present invention, wherein defective strings of pocket springs have been discarded.

[0031] Fig.10 yes Fig. 9 Schematic top view of a device for transmitting a string of pocket springs.

[0032] Fig.11 4 is a front view schematic diagram of a device for conveying a string of pocket springs according to another embodiment of the present invention, wherein an empty bag is located on the conveying device and the second detection device does not detect a mark.

[0033] Fig.12 yes Fig.11 Schematic top view of a device for transmitting a string of pocket springs.

[0034] Fig.13 4 is a front view schematic diagram of a device for conveying a string of pocket springs according to another embodiment of the present invention, wherein an empty bag is located on a conveying device and a second detection device detects a mark.

[0035] Fig.14 yes Fig.13 Schematic top view of a device for transmitting a string of pocket springs.

[0036] Fig.154 is a front view schematic diagram of a device for transmitting a string of pocket springs according to another embodiment of the present invention, wherein a cutting device is aligned with a connecting portion between adjacent strings of pocket springs.

[0037] Fig.16 yes Fig.15 Schematic top view of a device for transmitting a string of pocket springs.

[0038] Fig.17 4 is a front view schematic diagram of a device for conveying pocket spring strings according to another embodiment of the present invention, wherein defective pocket spring strings have been discarded.

[0039] Fig.18 yes Fig.17 Schematic top view of a device for transmitting a string of pocket springs.

[0040] Reference numerals:

[0041] Device 100 for conveying a string of pocket springs, a conveying device 1, a counting device 2, a second detecting device 3, a cutting device 4,

[0042] Continuous pocket spring strip 200 , pocket spring string 201 , label 21 , empty pocket 22 . DETAILED DESCRIPTION

[0043] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but cannot be understood as limiting the present invention. In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0044] The following describes a method for transferring a pocket spring string according to an embodiment of the present invention with reference to the accompanying drawings.

[0045] like Figure 1-18 As shown, the method for transmitting a string of pocket springs according to an embodiment of the present invention comprises the following steps:

[0046] The continuous pocket spring strip 200 is conveyed along the conveying direction, such as Figure 1-18As shown, a continuous pocket spring strip 200 is conveyed from right to left, and the continuous pocket spring strip 200 is formed by connecting a plurality of pocket spring strings 201 in sequence, and adjacent pocket spring strings 201 are distinguished by marks 21;

[0047] Counting the springs of the continuous pocket spring strip 200 passing the counting position, in other words, detecting the number of springs of the continuous pocket spring strip 200 passing the counting position;

[0048] Check for spring pocketing failure:

[0049] When spring pocketing failure is detected, the mark 21 is detected and the continuous pocket spring strips 200 are cut off based on the detected mark 21 to form a defective pocket spring string with spring pocketing failure, and the defective pocket spring string is discarded. When spring pocketing failure is not detected, the continuous pocket spring strips 200 are cut off based on the counting order to form a plurality of normal pocket spring strings independent of each other.

[0050] In other words, the detection mark 21 is performed when the spring bagging failure is detected, and is not performed when the spring bagging failure is not detected. When the spring bagging failure is detected, the mark 21 distinguishes the adjacent bagged spring strings 201 connected to each other, and when cutting, the continuous bagged spring strips are cut between the adjacent bagged spring strings 201 based on the detected mark 21 to form a defective bagged spring string. It can be understood that the defective bagged spring string is the bagged spring string located on the downstream side of the adjacent bagged spring strings (the bagged spring string located on the left side shown in the figure).

[0051] When spring pocketing failure is not detected, the continuous pocket spring strip 200 is cut off based on the counting of springs passing through the counting position to produce a plurality of normal pocket spring strings independent of each other.

[0052] Optionally, the spring bagging failure is at least one of the following: the spring is not bagged to form an empty bag 22, the spring is defective in the bag, and the bag is not tightly sealed, resulting in the spring stretching. In other words, the spring is not bagged to form an empty bag 22, the spring is defective in the bag, or the bag is not tightly sealed, resulting in the spring stretching, etc., which are all spring bagging failures. As long as any of the above situations occurs, the spring bagging failure is considered. It should be noted that the spring is considered defective when the shape and / or size of the spring in the bag is different from the standard spring required for the bag spring core.

[0053] The method for transmitting a bagged spring string according to an embodiment of the present invention can detect whether there is poor spring pocketing in a continuous bagged spring strip 200. When poor spring pocketing is detected, marks for distinguishing adjacent bagged spring strings 201 are detected, and the continuous bagged spring strip 200 is cut off based on the marks to form a poor bagged spring string with poor spring pocketing, and the bagged spring string with poor spring pocketing is discarded, thereby ensuring the quality of the bagged spring core and improving the comfort of use.

[0054] In some optional embodiments, the mark 21 is a spacing between adjacent pocket spring strings 201, and the spacing is greater than the spacing between adjacent springs in the pocket spring string 201. In other words, Figure 1-10 As shown, there is a connection portion between adjacent pocket spring strings 201, and the length of the connection portion is greater than the spacing between adjacent springs in the pocket spring string 201, and the connection portion is used as a mark 21 to distinguish adjacent pocket spring strings 201. Therefore, when the presence of defective spring pocketing is detected, the connection portion between adjacent pocket spring strings 201 is detected, and when the connection portion is detected, the continuous pocket spring strips 200 are cut off at the connection portion to form a defective pocket spring string.

[0055] It is understandable that the mark 21 for distinguishing adjacent pocket spring strings 201 is not limited to the above-mentioned intervals. For example, in other optional embodiments, the mark 21 is a front mark provided on the frontmost spring pocket of each pocket spring string 201 and / or a rear mark provided on the rearmost spring pocket of each pocket spring string 201.

[0056] In other words, if Figure 11-18 As shown, the cloth bag corresponding to the front end spring of each bagged spring string 201 can be marked to form a front end mark. Thus, when a spring bagging failure is detected, the front end mark on the cloth bag corresponding to the front end spring of the bagged spring string 201 adjacent to the failed bagged spring string is detected, and when the front end mark is detected, the connection between the failed bagged spring string and the bagged spring string 201 adjacent to the failed bagged spring string is cut off.

[0057] In addition, the cloth bag corresponding to the rearmost spring of each bagged spring string 201 may be marked to form a rear end mark. Thus, when a spring bagging failure is detected, the rear end mark on the cloth bag corresponding to the rearmost spring of the defective bagged spring string is detected, and when the rear end mark is detected, the connection between the defective bagged spring string and the bagged spring string 201 adjacent to the defective bagged spring string is cut off.

[0058] Optionally, the marking is a color marking. In other words, the cloth bag corresponding to the front end spring of each bagged spring string 201 is painted with color to form a front end mark, and / or, the cloth bag corresponding to the rear end spring of each bagged spring string 201 is painted with color to form a rear end mark.

[0059] In some embodiments, the number of pockets in the plurality of pocket spring strings 201 is the same.

[0060] When producing a bagged spring core that fits the curve of the human body, there is at least one spring in each bagged spring string that is different from the other springs. For example, the cloth bags in each bagged spring string are numbered 1, 2, 3...9, and continuous bagged spring strips need to be arranged in the order of 1, 2, 3...9, 1, 2, 3...9, 1, 2, 3...9, ..., so that when multiple bagged spring strings are pushed to the assembly area in turn for connection with each other, the springs with the same number in the multiple bagged spring strings correspond to each other.

[0061] When poor spring bagging is detected, continuous bagged spring strips 200 are cut between bag No. 9 of the defective bagged spring string including the poor spring bagging and bag No. 1 of the next bagged spring string, so that each cutting is between adjacent bagged spring strings 201 with the same number of bags, thereby ensuring that after the defective bagged spring string is discarded, the following normal bagged spring string corresponds to the normal bagged spring string that has been pushed to the assembly area.

[0062] In some embodiments, when poor spring pocketing is detected, the conveying speed of the continuous pocket spring strip 200 is reduced before the continuous pocket spring strip 200 is cut, and the conveying speed of the continuous pocket spring strip 200 is restored after the continuous pocket spring strip 200 is cut.

[0063] In other words, when spring pocketing failure is detected, the conveying speed of the continuous pocket spring strip 200 is reduced, and the mark 21 is detected at a relatively low conveying speed to improve the accuracy and efficiency of detecting the mark 21. After the continuous pocket spring strip 200 is cut off based on the mark 21 to form a defective pocket spring string, the conveying speed of the continuous pocket spring strip 200 is restored.

[0064] In some embodiments, detecting whether there is poor spring bagging includes: measuring the length of a bagged spring string segment having a predetermined number of springs passing through a counting position; determining whether the measured length is the same as a predetermined length, if the predetermined length is different from the measured length, determining that there is poor spring bagging, and if the predetermined length is the same as the measured length, determining that there is no poor spring bagging.

[0065] In other words, the bagged spring string segment having n (n is a natural number ≥ 1) springs has a predetermined length. When the number of springs of the continuous bagged spring strip 200 passing through the counting position is n, the length of the bagged spring string segment having n springs is measured. If the measured length is different from the predetermined length, it is determined that the springs are poorly bagged. If the measured length is the same as the predetermined length, it is determined that the springs are not poorly bagged.

[0066] It is understandable that the bagged spring string section can be at least a portion of the bagged spring string. In other words, the bagged spring string section can be a part of the bagged spring string 201, or can be a whole bagged spring string 201.

[0067] In some embodiments, detecting whether there is spring pocketing failure includes: directly detecting whether there is spring pocketing failure by a sensor. In other words, directly detecting whether there is spring pocketing failure of the continuous pocket spring strip 200 by a sensor capable of detecting spring pocketing failure.

[0068] A device for transmitting a string of pocket springs according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0069] like Figure 1-18 As shown, the device 100 for conveying a string of pocket springs according to an embodiment of the present invention comprises a conveying device 1, a counting device 2, a first detecting device (not shown), a second detecting device 3, a cutting device 4 and a discarding device (not shown).

[0070] The conveying device 1 conveys the continuous pocket spring strip 200 along the conveying direction. Figure 1-18 As shown, the conveying direction is from right to left, and the conveying device 1 is used to convey the continuous pocket spring strip 200 along the direction from right to left. Specifically, the conveying device 1 can receive a section of the continuous pocket spring strip 200 and can pull another section of the continuous pocket spring strip 200 to gradually enter the conveying device 1 when conveying the continuous pocket spring strip 200 forward along the conveying direction.

[0071] The continuous pocket spring strip 200 is formed by connecting a plurality of pocket spring strings 201 in sequence, and adjacent pocket spring strings 201 are distinguished by marks 21 .

[0072] The counting device 2 counts the springs of the continuous pocket spring strip 200 passing through the counting position. In other words, the counting device 2 measures the number of springs of the continuous pocket spring strip 200 passing through the counting position;

[0073] The first detection device detects whether there is a spring bagging failure, which includes the following situations: the spring is not bagged to form an empty bag 22, the spring is defective in the bag, or the bag is not tightly sealed to cause the spring to stretch. As long as any of the above situations occurs, the spring bagging is considered to be failure.

[0074] The second detection device 3 detects the mark when the first detection device detects that there is a spring pocket defect. In other words, when the first detection device detects that there is a spring pocket defect, the second detection device 3 detects the mark 21 that distinguishes adjacent pocket spring strings.

[0075] When the first detection device detects that there is a spring pocket defect, the cutting device 4 cuts off the continuous pocket spring strips 200 based on the mark detected by the second detection device 3 to form a defective pocket spring string with spring pocket defect, and when the first detection device does not detect that there is a spring pocket defect, the cutting device 4 cuts off the continuous pocket spring strips 200 based on the counting order of the counting device 2 to form a plurality of independent normal pocket spring strings. In other words, when the first detection device detects that there is a spring pocket defect, the second detection device 3 detects the mark 21 that distinguishes adjacent pocket spring strings 201, and the cutting device 4 cuts off the continuous pocket spring strips 200 based on the mark 21 detected by the second detection device 3 to form a defective pocket spring string. When the first detection device does not detect that there is a spring pocket defect, the cutting device 4 cuts off the continuous pocket spring strips 200 based on the count of springs passing through the counting position by the counting device 2 to form a plurality of independent normal pocket spring strings.

[0076] The discarding device discards the bad pocket spring string. In other words, the discarding device can discard the bad pocket spring string so that the bad pocket spring string will not be pushed to the assembly area.

[0077] According to the device for conveying a bagged spring string according to the embodiment of the present invention, by providing a first detection device, it is possible to detect whether there is poor spring bagging during the conveying process of continuous bagged spring strips 200; by providing a second detection device, it is possible to detect marks 21 for distinguishing adjacent bagged spring strings 201 when the first detection device detects that there is poor spring bagging, and cut off the continuous bagged spring strips 200 based on the marks 21 to form a poor bagged spring string; by providing a discarding device, it is possible to discard a poor bagged spring string, thereby ensuring the quality of the bagged spring core and improving the comfort of use.

[0078] In some embodiments, the device for transmitting the pocket spring string further comprises a marking device (not shown), which marks the frontmost spring pocket of each pocket spring string 201 or the rearmost spring pocket of each pocket spring string 201. Figure 11-18 As shown, the marking device marks the front-end spring pocket of each pocket spring string to form a front-end mark, and the front-end mark on each pocket spring string is used to distinguish adjacent pocket spring strings 201. Alternatively, the marking device marks the rear-end spring pocket of each pocket spring string 201 to form a rear-end mark, and the rear-end mark on each pocket spring string 201 is used to distinguish adjacent pocket spring strings.

[0079] Optionally, the marking 21 devices are color marking devices. In other words, the marking device can color the frontmost spring cloth bag or the rearmost spring cloth bag of each pocket spring string.

[0080] It is understandable that the mark 21 for distinguishing adjacent pocket spring strings 201 is not limited to the above form. For example, in some other optional embodiments, the mark 21 is a space between adjacent pocket spring strings 201, and the space is greater than the spacing between adjacent springs in the pocket spring string. Figure 1-10 As shown, there is a connecting section between adjacent pocket spring strings 201 , and the length of the connecting section is greater than the spacing between adjacent springs in the pocket spring string 201 . The connecting section is used as a mark 21 to distinguish adjacent pocket spring strings 201 .

[0081] In some embodiments, the first detection device includes a measuring device and a controller, the measuring device measures the length of the bagged spring string segment with a predetermined number of springs passing through the counting position, and the controller determines whether the measured length is the same as the predetermined length. Specifically, when the number of springs passing through the counting position is n (n is a natural number ≥ 1), the length of the bagged spring string segment with the n springs passing through the counting position is measured. The bagged spring string segment with n springs has a predetermined length. The controller can determine whether there is a spring bagging failure by comparing the measured length with the predetermined length.

[0082] In some embodiments, the second detection device 3 is a sensor, and the sensor directly detects whether there is spring pocketing failure. In other words, the pocket spring string or continuous pocket spring strip 200 is directly detected by a sensor capable of detecting spring pocketing failure.

[0083] In some embodiments, the cutting device 4 is located on the upstream side of the conveying device 1 along the conveying direction, the second detection device 3 is located on the upstream side of the cutting device 4 along the conveying direction, and the counting device 2 is located between the cutting device 4 and the second detection device 3 along the conveying direction. Figure 1-18 As shown, the cutting device 4 is located on the right side of the conveying device 1, the second detecting device 3 is located on the right side of the cutting device 4, and the counting device 2 is located between the cutting device 4 and the second detecting device 3 along the left-right direction.

[0084] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0085] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0086] In the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be construed as limitations of the present invention, and those skilled in the art may make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A method for conveying a string of pocket springs, characterized in that: The device for conveying a string of pocket springs comprises: A conveying device, wherein the conveying device conveys a continuous strip of pocket springs along a conveying direction, wherein the continuous strip of pocket springs is formed by sequentially connecting a plurality of pocket spring strings, and adjacent pocket spring strings are distinguished by markings; a counting device for counting the springs of the continuous strip of pocket springs passing through a counting position; a first detection device, the first detection device detecting whether there is a spring bagging defect; a second detection device, the second detection device detecting the mark when the first detection device detects that the spring is poorly bagged; a cutting device, wherein when the first detecting device detects that the spring is poorly pocketed, the cutting device cuts off the continuous pocketed spring strip based on the mark detected by the second detecting device to form a defective pocketed spring string with poor spring pocketing, and when the first detecting device does not detect that the spring is poorly pocketed, the cutting device cuts off the continuous pocketed spring strip based on the counting sequence of the counting device to form a plurality of independent normal pocketed spring strings; A discarding device, wherein the discarding device discards the defective pocket spring string; The method for transmitting a string of pocket springs comprises the following steps: Conveying a continuous strip of pocket springs along a conveying direction, wherein the continuous strip of pocket springs is formed by sequentially connecting a plurality of pocket spring strings, and adjacent pocket spring strings are distinguished by markings; Counting the springs of the continuous strip of pocket springs passing through a counting position; Check for spring pocketing failure: When spring pocketing failure is detected, the mark is detected and the continuous pocket spring strip is cut off based on the detected mark to form a defective pocket spring string with spring pocketing failure, and the defective pocket spring string is discarded. When no spring pocketing failure is detected, cutting off the continuous pocket spring strips based on the counting sequence to produce a plurality of normal pocket spring strings independent of each other; The mark is a spacing between adjacent pocket spring strings, and the spacing is greater than the spacing between adjacent springs in the pocket spring string; or, The mark is a front end mark provided on the front end spring bag of each of the pocket spring strings and / or a rear end mark provided on the rear end spring bag of each of the pocket spring strings.

2. The method for conveying a string of pocket springs according to claim 1, characterized in that: The mark is a color mark.

3. The method for conveying a string of pocket springs according to claim 1, characterized in that: The number of bags in the plurality of bagged spring strings is the same.

4. The method for conveying a string of pocket springs according to claim 1, characterized in that: When spring pocketing failure is detected, the conveying speed of the continuous strip of pocket springs is reduced before the continuous strip of pocket springs is cut, and the conveying speed of the continuous strip of pocket springs is restored after the continuous strip of pocket springs is cut.

5. The method for conveying a string of pocket springs according to claim 1, characterized in that: The detection of whether there is a spring bagging failure includes: measuring the length of a string of pocket springs having a predetermined number of springs passing through the counting position; It is determined whether the measured length is the same as the predetermined length. If the predetermined length is different from the measured length, it is determined that the spring pocketing is defective. If the predetermined length is the same as the measured length, it is determined that the spring pocketing is not defective.

6. The method for conveying a string of pocket springs according to claim 1, characterized in that: The detection of whether there is a spring bagging failure includes: The sensor directly detects whether there is a spring pocket defect.

7. The method for conveying a string of pocket springs according to claim 1, characterized in that: The spring bagging failure is at least one of an empty bag, a spring collapse in the bag, or a spring extension caused by a loose bag seal.

8. The method for conveying a string of pocket springs according to claim 1, characterized in that: It also includes a marking device, which marks the front-end spring pocket of each of the pocket spring strings or the rear-end spring pocket of each of the pocket spring strings.

9. The method for conveying a string of pocket springs according to claim 8, characterized in that: The marking device is a color marking device.

10. The method for conveying a string of pocket springs according to claim 8, characterized in that: The mark is an interval between adjacent pocket spring strings, and the interval is greater than the spacing between adjacent springs in the pocket spring string.

11. The method for conveying a string of pocket springs according to any one of claims 1 to 10, characterized in that: The first detection device includes a measuring device and a controller. The measuring device measures the length of a bagged spring string segment having a predetermined number of springs passing through the counting position. The controller determines whether the measured length is the same as the predetermined length.

12. The method for conveying a string of pocket springs according to any one of claims 1 to 10, characterized in that: The second detection device is a sensor, and the sensor directly detects whether there is a spring bagging failure.

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