Spring supply device and spring supply method

Abstract

To release the engagement of the hooks more effectively compared to a configuration in which air is blown onto a pair of coil springs from only one direction.SOLUTION: The spring supply device is inserted into the disengaged hooks of a pair of coil springs whose hooks are engaged with each other, and includes: a rod body extending in one direction from which the pair of coil springs are hung; an inclined portion that inclines the upper coil spring hung from the rod body to one horizontal side when viewed from the one direction; and another inclined portion that inclines the lower coil spring to the other horizontal side when viewed from the one direction while the upper coil spring is inclined to one horizontal side.SELECTED DRAWING: Figure 8

Description

[Technical Field]

[0001] The present invention relates to a spring supplying device and a spring supplying method. [Background technology]

[0002] The separating and supplying device described in Patent Document 1 has a conveying member that continuously conveys the same parts and has a conveying groove formed along its entire length with a step portion that is recessed in the vertical direction at the end in the conveying direction, a compressed air blowing means that blows compressed air toward the forefront part that has reached the step portion, generally in the conveying direction, a detection means that is provided at a predetermined position in the step portion and detects the passage of the forefront part, a prohibition means that prohibits the conveyance of subsequent parts in response to a detection signal from the detection means, and a rotation angle position regulating means that is provided at the end in the conveying direction of the step portion and regulates the rotation angle position of the forefront part in the conveying direction. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 60-122620 Summary of the Invention [Problem to be solved by the invention]

[0004] There is a supply device that supplies coil springs with hooks at their ends to a subsequent process, but with coil springs with hooks at their ends, the hooks can sometimes become caught together.

[0005] In conventional supply devices, when a pair of coil springs are engaged with each other, air is blown from one direction onto one of the coil springs, changing the position of the coil spring and disengaging the hooks. However, with this configuration where air is blown from only one direction, the hooks may not be disengaged.

[0006] An object of the present disclosure is to effectively release the engagement between the hooks compared to a configuration in which air is blown onto a pair of coil springs from only one direction. [Means for solving the problem]

[0007] The spring supply device according to the first aspect of the present disclosure is characterized by comprising a rod body extending in one direction that is inserted into the disengaged hooks of a pair of coil springs whose hooks are engaged, and from which the pair of coil springs are hung, an inclined portion that tilts the upper coil spring hung from the rod body to one horizontal side when viewed from that one direction, and another inclined portion that tilts the lower coil spring to the other horizontal side when viewed from that one direction, when the upper coil spring is inclined to one horizontal side.

[0008] A spring supplying device according to a second aspect of the present disclosure is characterized in that, in the spring supplying device described in the first aspect, it comprises a second inclined portion that inclines the upper coil spring suspended from the rod body toward the other horizontal side when viewed from the one direction, and another second inclined portion that inclines the lower coil spring toward one horizontal side when viewed from the one direction while the upper coil spring is inclined toward the other horizontal side.

[0009] A spring supplying device according to a third aspect of the present disclosure is characterized in that, in the spring supplying device described in the second aspect, the inclined portion comes into contact with the upper coil spring to incline the upper coil spring, the other inclined portion comes into contact with the lower coil spring to incline the lower coil spring, the second inclined portion comes into contact with the upper coil spring to incline the upper coil spring, and the other second inclined portion comes into contact with the lower coil spring to incline the lower coil spring.

[0010] A spring supplying device according to a fourth aspect of the present disclosure is characterized in that, in the spring supplying device described in the third aspect, the inclined portion, the other inclined portion, the second inclined portion, and the other second inclined portion come into contact with the coil spring due to gravity applied to the coil spring.

[0011] A spring supplying device according to a fifth aspect of the present disclosure is characterized in that, in the spring supplying device described in the second aspect, the inclination portion inclines the upper coil spring by applying air pressure to the upper coil spring, the other inclination portion inclines the lower coil spring by applying air pressure to the lower coil spring, the second inclination portion inclines the upper coil spring by applying air pressure to the upper coil spring, and the other second inclination portion inclines the lower coil spring by applying air pressure to the lower coil spring.

[0012] A spring supplying device according to a sixth aspect of the present disclosure is characterized in that in the spring supplying device described in the fifth aspect, the inclined portion, the other inclined portion, the second inclined portion, and the other second inclined portion incline the pair of coil springs by blowing air onto the coil springs.

[0013] A spring supplying device according to a seventh aspect of the present disclosure is the spring supplying device according to the second aspect, characterized in that the rod body is inclined with respect to the horizontal direction, and is provided with an application section that applies a conveying force to the pair of coil springs suspended from the rod body and conveys the pair of coil springs, the inclined section and the other inclined section, and the second inclined section and the other second inclined section are aligned in the conveying direction in which the pair of coil springs are conveyed, and the pair of coil springs conveyed by the application section are inclined by the inclined section and the other inclined section, and then inclined by the second inclined section and the other second inclined section.

[0014] A spring supplying device according to an eighth aspect of the present disclosure is the spring supplying device according to the seventh aspect, characterized in that the rod body is formed with a delay section that delays the transport of a pair of the coil springs in a state inclined by the inclined section and the other inclined section, and another delay section that delays the transport of a pair of the coil springs in a state inclined by the second inclined section and the other second inclined section.

[0015] A spring supplying method according to a ninth aspect of the present disclosure is characterized in that a coil spring is supplied using the spring supplying device according to any one of the first to eighth aspects. [Effects of the Invention]

[0016] According to the spring supplying device according to the first aspect of the present disclosure, the engagement between the hooks can be released more effectively than in a configuration in which air is blown onto a pair of coil springs from only one direction.

[0017] According to the spring supply device of the second aspect of the present disclosure, the engagement between the hooks can be effectively released compared to when the upper coil spring is simply tilted horizontally to one side and the lower coil spring is simply tilted horizontally to the other side.

[0018] According to the spring supplying device according to the third aspect of the present disclosure, the coil spring can be tilted with a simpler configuration than when the coil spring is tilted by magnetic force.

[0019] According to the spring supplying device according to the fourth aspect of the present disclosure, the coil spring can be tilted with a simpler configuration than when the coil spring is tilted by gripping it.

[0020] According to the spring supplying device according to the fifth aspect of the present disclosure, the coil spring can be tilted with a simpler configuration than when the coil spring is tilted by magnetic force.

[0021] According to the spring supplying device according to the sixth aspect of the present disclosure, the coil spring can be tilted with a simpler configuration than when a suction force is applied to the coil spring to tilt the coil spring.

[0022] According to the spring supply device of the seventh aspect of the present disclosure, the upper coil spring can be tilted horizontally to one side and the other side, and the lower coil spring can be tilted horizontally to the other side and one side, without moving the inclined portion and the other inclined portion and the second inclined portion and the other second inclined portion.

[0023] According to the spring supplying device according to the eighth aspect of the present disclosure, the hooks can be disengaged more effectively than when the conveying speed of the pair of coil springs is constant throughout.

[0024] According to the spring supplying method according to the ninth aspect of the present disclosure, the engagement between the hooks can be released more effectively than in a configuration in which air is blown onto a pair of coil springs from only one direction. [Brief explanation of the drawings]

[0025] [Figure 1] 1A and 1B are perspective views showing a coil spring supplied by a spring supplying device according to a first embodiment of the present disclosure. [Figure 2] 1 is a perspective view showing a spring supply system including a spring supply device according to a first embodiment of the present disclosure. [Figure 3] 1 is a plan view showing an alignment device of a spring supply system including a spring supply device according to a first embodiment of the present disclosure. [Figure 4] 1 is a perspective view showing a spring supplying device according to a first embodiment of the present disclosure. [Figure 5] 1 is a top view of a spring supplying device according to a first embodiment of the present disclosure. [Figure 6] 1 is a side view showing a spring supplying device according to a first embodiment of the present disclosure. [Figure 7] 5A and 5B are process diagrams showing a process of suspending a coil spring on a rod using a spring supplying device according to the first embodiment of the present disclosure. [Figure 8] 5A and 5B are process diagrams illustrating a process of tilting a coil spring using a spring supplying device according to the first embodiment of the present disclosure. [Figure 9] 5A and 5B are process diagrams illustrating a process of tilting a coil spring using a spring supplying device according to the first embodiment of the present disclosure. [Figure 10] 5A to 5C are process diagrams showing a process of collecting disengaged coil springs using the spring supplying device according to the first embodiment of the present disclosure. [Figure 11]3A to 3C are process diagrams illustrating a process in which a coil spring is supplied to a subsequent process using the spring supplying device according to the first embodiment of the present disclosure. [Figure 12] FIG. 10 is a perspective view showing a spring supplying device according to a second embodiment of the present disclosure. [Figure 13] 10A and 10B are process diagrams illustrating a process of tilting a coil spring using a spring supplying device according to a second embodiment of the present disclosure. [Figure 14] 10A and 10B are process diagrams illustrating a process of tilting a coil spring using a spring supplying device according to a second embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0026] First Embodiment An example of a spring supplying device and a spring supplying method according to a first embodiment of the present disclosure will be described with reference to Figures 1 to 11. Arrow H shown in each figure indicates the vertical direction, i.e., the up-and-down direction of the spring supplying device and the spring supplying system including the spring supplying device, arrow W shown in each figure indicates the width direction of the spring supplying device and the spring supplying system, is perpendicular to arrow H and indicates the horizontal direction, and arrow D shown in each figure indicates the depth direction of the spring supplying device and the spring supplying system, is perpendicular to arrows H and W and indicates the horizontal direction.

[0027] The drawings used in the following description are all schematic, and the dimensional relationships between elements, ratios, etc. shown in the drawings do not necessarily correspond to the actual ones.

[0028] (coil spring 300) 1(A) and 1(B), the coil spring 300 supplied by the spring supply device 10 according to this embodiment is a tension coil spring. The coil spring 300 has a coil-shaped main body 300a and hook-shaped hooks 300b formed on both ends of the main body 300a.

[0029] The hook 300b has an arc shape, and the base end of the hook 300b is connected to the end of the main body 300a, while the tip of the hook 300b is spaced apart from the main body 300a, thereby forming an opening 300c between the tip of the hook 300b and the main body 300a.

[0030] Furthermore, the hooks 300b are formed at the same angle when viewed from the extension direction of the coil spring 300. In other words, when viewed from the extension direction of the coil spring 300, one hook 300b and the other hook 300b are arranged overlapping or parallel to each other.

[0031] Here, because an opening 300c is provided between the tip of the hook 300b and the main body 300a, as shown in Fig. 1(B), the hook 300b of one coil spring 300 may become engaged with the hook 300b of the other coil spring 300. In the spring supplying device according to the first embodiment, when the hook 300b of one coil spring 300 becomes engaged with the hook 300b of the other coil spring 300, this engagement is released and the coil spring 300 is supplied to a subsequent process.

[0032] Here, the separation distance at the opening 300c (the distance between the tip of the hook 300b and the main body 300a) is smaller than the diameter of the rod body 12, which will be described later.

[0033] In the present application, "engage" means to intertwine with one another. Specifically, "the hooks 300b engage with one another" means that the hooks 300b intertwine with one another.

[0034] (Configuration of spring supply system 102) As shown in FIG. 2, the spring supply system 102 equipped with the spring supply device 10 according to the first embodiment includes an alignment device 110 that aligns a plurality of coil springs 300, the spring supply device 10 that supplies the coil springs 300 to a subsequent process, and a control unit 200 that controls each part.

[0035] [Alignment device 110] 2 and 3, the alignment device 110 includes an input unit 120 into which a plurality of coil springs 300 are input, an alignment unit 130 that aligns the input plurality of coil springs 300 into an example, and a delivery unit 140 that delivers the aligned plurality of coil springs 300 to the spring supply device 10. Furthermore, the alignment device 110 includes a support unit 150 that supports the input unit 120, the alignment unit 130, and the delivery unit 140.

[0036] -Support part 150- 2, the support unit 150 supports the insertion unit 120 and the alignment unit 130 from below. The support unit 150 is also provided with a vibration unit (not shown) that vibrates the insertion unit 120, the alignment unit 130, and the delivery unit 140. When the support unit 150 vibrates the insertion unit 120, the alignment unit 130, and the delivery unit 140, the coil spring 300 inserted into the insertion unit 120, the coil spring 300 aligned by the alignment unit 130, and the coil spring 300 delivered from the delivery unit 140 move from the back side to the front side in the depth direction.

[0037] -Input section 120, alignment section 130- 2 and 3, the input unit 120 and the alignment unit 130 are integrally provided and aligned in the depth direction. The input unit 120 is disposed on the far side of the alignment unit 130 in the depth direction.

[0038] The input section 120 is provided with an input port 122 that is open at the top and through which the coil spring 300 is input, and a passage port 124 that flattens the coil spring 300 input into the input port 122 into a flat surface.

[0039] In this configuration, the coil springs 300 that are overlapped in the vertical direction cannot pass through the passage opening 124, but rather come into contact with the edge of the passage opening 124 and are smoothed into a flat surface before passing through the passage opening 124.

[0040] The alignment section 130 is also provided with a funnel section 132 that collects the coil springs 300 that have passed through the passage opening 124 toward the center in the width direction, and a groove section 134 that extends in the depth direction and into which the coil springs 300 collected by the funnel section 132 fit and which aligns the fitted coil springs 300 in a row.

[0041] Furthermore, the alignment section 130 is provided with a gate section 136 having a nozzle 136a disposed midway along the groove section 134 and configured to blow air onto the coil springs 300 aligned by the groove section 134. Thus, by blowing air from the nozzle 136a of the gate section 136 onto the coil springs 300 aligned by the groove section 134, for example, coil springs 300 approaching the gate section 136 without getting stuck in the groove section 134 are returned to the funnel section 132. The nozzle 136a has a cylindrical shape and is inserted into a through-hole formed in the gate section 136. In FIGS. 2 and 3, only the rear end of the nozzle 136a is shown; the tip of the nozzle 136a is not shown. A conveying hose (not shown) for feeding compressed air is connected to the rear end of the nozzle 136a, and the compressed air supplied by the conveying hose is sprayed from the tip of the nozzle 136a.

[0042] -Transmission unit 140- 2 and 3, the delivery section 140 has a base end connected to the alignment section 130 and extends from the alignment section 130 toward the front in the depth direction. The delivery section 140 is inclined with respect to the horizontal direction so that the tip end is downward relative to the base end. In addition, the delivery section 140 has a groove 142 formed therein that extends from the base end to the tip end and is connected to the groove 134 of the alignment section 130.

[0043] In this configuration, the delivery section 140 receives the coil spring 300 at the base end of the groove 142 while being transported while fitted in the groove 134 , and delivers the received coil spring 300 from the tip of the groove 142 to the spring supply device 10 .

[0044] [Spring supply device 10] As shown in FIG. 2, the spring supplying device 10 is disposed in front of the alignment device 110 in the depth direction.

[0045] The spring supply device 10 includes a rod body 12 that is inserted into the disengaged hooks 300b of a pair of coil springs 300 whose hooks 300b are engaged with each other, to hang the coil spring 300 and extend in one direction, and a gripping robot 60 that grips the rod body 12 and changes the position of the rod body 12.

[0046] Furthermore, the spring supply device 10 is provided with an inclined portion 20 that inclines the upper coil spring 300 suspended from the rod body 12 to one side in the width direction when viewed from one direction, and an inclined portion 26 that inclines the lower coil spring 300 to the other side in the width direction when viewed from one direction while the upper coil spring 300 is inclined to one side in the width direction.

[0047] The spring supply device 10 also includes an inclined portion 30 that inclines the upper coil spring 300 suspended from the rod body 12 toward the other side in the width direction when viewed from one direction, and an inclined portion 36 that inclines the lower coil spring 300 toward one side in the width direction when viewed from one direction while the upper coil spring 300 is inclined toward the other side in the width direction.

[0048] -Stick 12- 4, the rod body 12 has a main body 14 extending from the tip of the delivery section 140 toward the front in the depth direction, and an extension section 16 connected to the tip of the main body 14 and extending upward. The tip of the main body 14 is positioned below the base end of the main body 14, so that the main body 14 is inclined with respect to the horizontal direction. In addition, a bent section 14a that can be bent upward is formed at the base end portion of the main body 14.

[0049] Here, the one direction in which the rod body 12 mentioned above extends is the direction in which the main body 14 of the rod body 12 extends, and is the direction in which the front side in the depth direction is inclined downward relative to the back side in the depth direction.

[0050] 5, the rod body 12 is formed with a V-shaped notch portion 12a that opens upward, and a knurled portion 12b that has been processed to have fine irregularities on its circumferential surface. Specifically, the notch portion 12a and the knurled portion 12b are formed on the rod body 12 so as to come into contact with the hook 300b of the coil spring 300 that is inclined by the inclined portion 20 and the inclined portion 26.

[0051] Furthermore, the rod body 12 is formed with a notch portion 12a and a knurled portion 12b so as to come into contact with the hook 300b of the coil spring 300 in a state inclined by the inclined portion 30 and the inclined portion 36. The notch portion 12a is an example of a delay portion. The knurled portion 12b is an example of another delay portion.

[0052] -Gripping Robot 60- The gripping robot 60 is a so-called three-dimensional robot, and as shown in Fig. 2, a gripping part 60a provided on the gripping robot 60 grips the tip of the extension part 16 of the rod body 12. As a result, for example, the gripping robot 60 vibrates the rod body 12, thereby applying a conveying force to the coil spring 300 suspended from the main body part 14 of the rod body 12. In this way, the gripping robot 60 also functions as an applying part that applies a conveying force to the coil spring 300.

[0053] Other operations by which the gripping robot 60 grips the rod 12 and changes the position of the rod 12 will be explained together with the operations described later.

[0054] -Slope part 20- As shown in Figures 2 and 4, the inclined portion 20 is positioned so as to contact the upper coil spring 300 of a pair of coil springs 300 that are suspended from the main body 14 of the rod body 12 and transported toward the tip of the main body 14.

[0055] The inclined portion 20 is rod-shaped and supported from below by a support member (not shown). As shown in FIG. 5, the inclined portion 20 intersects with the main body 14 of the rod body 12 when viewed from above. Specifically, when viewed from above, the base end of the inclined portion 20 is located on one widthwise side (the right side in the figure) of the main body 14, and the tip end of the inclined portion 20 is located on the other widthwise side (the left side in the figure) of the main body 14. Furthermore, as shown in FIG. 6, the inclined portion 20 is disposed below the main body 14 of the rod body 12 when viewed from the widthwise direction. Specifically, when viewed from the widthwise direction, the base end of the inclined portion 20 is farther from the main body 14 than the tip end of the inclined portion 20. In other words, the vertical separation distance between the base end of the inclined portion 20 and the main body 14 is greater than the vertical separation distance between the tip end of the inclined portion 20 and the main body 14. The diameter of the inclined portion 20 is larger than the pitch of adjacent wire rods in the main body portion 300a and larger than the separation distance at the opening 300c (the distance between the tip of the hook 300b and the main body portion 300a). This prevents the coil spring 300 from getting caught on the inclined portion 20.

[0056] -Slope part 26- 2 and 4, the inclined portion 26 is arranged so as to come into contact with the lower coil spring 300 of a pair of coil springs 300 that are suspended from the main body 14 of the rod body 12 and transported toward the tip of the main body 14. The inclined portion 26 is an example of another inclined portion.

[0057] The inclined portion 26 is cylindrical and supported from below by a support member (not shown). As shown in FIG. 5 , the inclined portion 26 is located on the other widthwise side of the inclined portion 20 when viewed from above, and extends in the depth direction (more precisely, in one direction). A guide portion 26a bent toward the other widthwise side is formed at the base end of the inclined portion 26. As shown in FIG. 6 , the inclined portion 26 is located below the main body 14 of the rod 12 when viewed from the widthwise direction, extends along the main body 14, and is farther away from the main body 14 than the tip of the inclined portion 20. In other words, the vertical distance between the base end of the inclined portion 26 and the main body 14 is greater than the vertical distance between the tip of the inclined portion 20 and the main body 14, and the vertical distance between the tip of the inclined portion 26 and the main body 14 is greater than the vertical distance between the tip of the inclined portion 20 and the main body 14. The diameter of the inclined portion 26 is larger than the diameter of the inclined portion 20. In other words, the diameter of the inclined portion 26 is larger than the pitch between adjacent wire rods in the main body portion 300a and larger than the separation distance in the opening 300c (the distance between the tip of the hook 300b and the main body portion 300a).

[0058] -Slope part 30- 2 and 4, the inclined portion 30 is arranged so as to come into contact with the upper coil spring 300 of a pair of coil springs 300 that are suspended from the main body 14 of the rod body 12 and transported toward the tip of the main body 14. Furthermore, the inclined portion 30 is arranged downstream of the inclined portion 20 in the transport direction of the coil spring 300 (hereinafter referred to as the "spring transport direction"). The inclined portion 30 is an example of a second inclined portion.

[0059] The inclined portion 30 is rod-shaped and supported from below by a support member (not shown). As shown in FIG. 5, the inclined portion 30 intersects with the main body 14 of the rod body 12 when viewed from above. Specifically, when viewed from above, the base end of the inclined portion 30 is located on the other widthwise side (left side in the figure) of the main body 14, and the tip end of the inclined portion 30 is located on one widthwise side (right side in the figure) of the main body 14. Furthermore, as shown in FIG. 6, the inclined portion 30 is disposed below the main body 14 of the rod body 12 when viewed from the widthwise direction. Specifically, when viewed from the widthwise direction, the base end of the inclined portion 30 is farther from the main body 14 than the tip end of the inclined portion 30. In other words, the vertical separation distance between the base end of the inclined portion 30 and the main body 14 is greater than the vertical separation distance between the tip end of the inclined portion 30 and the main body 14. The diameter of the inclined portion 30 is larger than the pitch of adjacent wire rods in the main body portion 300a and is larger than the separation distance at the opening 300c (the distance between the tip of the hook 300b and the main body portion 300a). This prevents the coil spring 300 from getting caught on the inclined portion 30.

[0060] -Slope part 36- 2 and 4, the inclined portion 36 is arranged so as to come into contact with the lower coil spring 300 of a pair of coil springs 300 that are suspended from the main body 14 of the rod body 12 and transported toward the tip of the main body 14. Furthermore, the inclined portion 36 is arranged downstream of the inclined portion 26 in the spring transport direction. The inclined portion 36 is an example of another second inclined portion.

[0061] The inclined portion 36 is cylindrical and supported from below by a support member (not shown). As shown in FIG. 5, the inclined portion 36 is located on one widthwise side of the inclined portion 30 when viewed from above, and extends in the depth direction (more precisely, in one direction). A guide portion 36a bent toward one widthwise side is formed at the base end of the inclined portion 36. As shown in FIG. 6, the inclined portion 36 is located below the main body 14 of the rod 12 when viewed from the widthwise direction, extends along the main body 14, and is farther away from the main body 14 than the tip of the inclined portion 30. In other words, the vertical distance between the base end of the inclined portion 36 and the main body 14 is greater than the vertical distance between the tip of the inclined portion 30 and the main body 14, and the vertical distance between the tip of the inclined portion 36 and the main body 14 is greater than the vertical distance between the tip of the inclined portion 30 and the main body 14. The diameter of the inclined portion 36 is larger than the diameter of the inclined portion 30. In other words, the diameter of the inclined portion 36 is larger than the pitch between adjacent wire rods in the main body portion 300a and larger than the separation distance in the opening 300c (the distance between the tip of the hook 300b and the main body portion 300a).

[0062] (Operation of the spring supply system 102) Next, we will explain the operation of supplying the coil springs 300 one by one to the subsequent process using the spring supply system 102. In other words, we will explain the spring supply method of the coil springs 300. Note that the operation of each part below is controlled by the control unit 200.

[0063] First, the control unit 200 controls the support unit 150 to vibrate the insertion unit 120, the alignment unit 130, and the delivery unit 140 shown in Figures 2 and 3. In this state, a plurality of coil springs 300 are inserted into the insertion unit 120 from above. As the insertion unit 120 vibrates, the coil springs 300 inserted into the insertion unit 120 move from the back side to the front side in the depth direction.

[0064] Furthermore, the coil spring 300 moving from the back side to the front side in the depth direction passes through the passage opening 124 and reaches the funnel section 132. Here, as the coil spring 300 passes through the passage opening 124, the coil springs 300 that are stacked in the vertical direction come into contact with the edge of the passage opening 124 and are leveled out into a flat surface before passing through the passage opening 124.

[0065] In the funnel portion 132, the multiple coil springs 300 that have passed through the passage opening 124 are gathered at the center side in the width direction. The multiple coil springs 300 gathered by the funnel portion 132 are fitted into the groove portion 134 and aligned in a row. Then, the multiple coil springs 300 aligned in a row move from the back side to the front side in the depth direction.

[0066] Furthermore, air is blown from nozzles 136a of gate portion 136 provided midway through groove portion 134 onto the multiple coil springs 300 aligned in a row in groove portion 134. As a result, for example, coil springs 300 approaching the gate portion 136 side without getting stuck in groove portion 134 are returned to funnel portion 132.

[0067] Furthermore, the vibrating delivery unit 140 receives the coil spring 300 at the base end of the groove 142 as it passes through the gate 136 and is transported while fitting into the groove 134, and transports the received coil spring 300 to the tip of the groove 142. The delivery unit 140 then delivers the coil spring 300 to the spring supply device 10.

[0068] Hereinafter, a case where a pair of coil springs 300 with their hooks 300b engaged with each other is transported by the groove portion 142 and sent out to the spring supplying device 10 will be described.

[0069] 7(A), the hook 300b (disengaged hook 300b) of the leading coil spring 300 of the pair of coil springs 300 being transported protrudes from the delivery unit 140. A sensor (not shown) then detects the protruding hook 300b. When the hook 300b is detected, the control unit 200 controls the support unit 150 to stop the vibration of the insertion unit 120, the alignment unit 130, and the delivery unit 140.

[0070] Furthermore, the control unit 200 controls the gripping robot 60 to move the rod 12 in the vertical and depth directions, as shown in Fig. 7(A), and to insert the disengaged hook 300b into the bent portion 14a of the main body 14 of the rod 12. Once the hook 300b is inserted into the bent portion 14a, the control unit 200 controls the gripping robot 60 to pull the pair of coil springs 300 out of the grooves 142, as shown in Fig. 7(B), and temporarily stop the movement of the rod 12. By pulling the pair of coil springs 300 out of the grooves 142, the pair of coil springs 300 are suspended from the rod 12, as shown in Figs. 4 to 6.

[0071] Furthermore, the control unit 200 controls the gripping robot 60 to vibrate the rod body 12. As the rod body 12 vibrates, the pair of coil springs 300 suspended from the rod body 12 are transported from the base end side of the main body 14 toward the tip end side.

[0072] 8(A) and 9(A), the upper coil spring 300 of the pair of coil springs 300 being transported comes into contact with the inclined portion 20 due to the gravity applied to the coil spring 300, and when viewed from one direction in which the rod body 12 extends, it rotates around the main body 14 and inclines to one side in the width direction. Furthermore, with the upper coil spring 300 in a tilted state, the lower coil spring 300 comes into contact with the inclined portion 26 due to the gravity applied to the coil spring 300, and when viewed from one direction, it rotates around the engaged hook 300b and inclines to the other side in the width direction.

[0073] 5, the rod 12 is formed with a notch 12a and a knurled portion 12b so as to come into contact with the hook 300b of the coil spring 300 in a state inclined by the inclined portion 20 and the inclined portion 26. Therefore, the conveying speed at which the coil spring 300 in a state inclined by the inclined portion 20 and the inclined portion 26 is conveyed is slower than the conveying speed at which the coil spring 300 suspended from the rod 12 in an unloaded state is conveyed.

[0074] At this time, if the opening 300c of the engaged hook 300b of the upper coil spring 300 faces upward, the engagement between the hook 300b of the upper coil spring 300 and the lower hook 300b is maintained, as shown in Fig. 8(A). On the other hand, if the opening 300c of the engaged hook 300b of the upper coil spring 300 faces downward, the engagement between the hook 300b of the upper coil spring 300 and the lower hook 300b is released, as shown in Fig. 9(A). This causes the lower coil spring 300 to fall downward and be collected by a collection unit (not shown).

[0075] Furthermore, as the coil springs 300 are transported, the upper coil spring 300 comes into contact with the inclined portion 36 due to gravity acting on the coil spring 300, and as viewed from one direction in which the rod body 12 extends, the upper coil spring 300 rotates around the main body 14 and tilts to the other side in the width direction, as shown in Figures 8(B) and 9(B). Furthermore, the hook 300b of the lower coil spring 300 may be engaged with the hook 300b of the upper coil spring 300. In this case, while the upper coil spring 300 is in a tilted state, the lower coil spring 300 comes into contact with the inclined portion 36 due to gravity acting on the coil spring 300, and as viewed from one direction, the lower coil spring 300 rotates around the engaged hook 300b and tilts to one side in the width direction, as shown in Figure 8(B).

[0076] 5, the rod 12 is formed with a notch 12a and a knurled portion 12b so as to come into contact with the hook 300b of the coil spring 300 in a state inclined by the inclined portions 30 and 36. Therefore, the conveying speed at which the coil spring 300 in a state inclined by the inclined portions 30 and 36 is conveyed is slower than the conveying speed at which the coil spring 300 suspended from the rod 12 in an unloaded state is conveyed.

[0077] At this time, if the opening 300c of the engaged hook 300b of the upper coil spring 300 faces downward, the engagement between the hook 300b of the upper coil spring 300 and the lower hook 300b is released, as shown in Fig. 8(B), causing the lower coil spring 300 to fall downward and be collected by a collection unit (not shown).

[0078] In this way, the lower coil spring 300 falls due to the inclined portions 20, 26 and the inclined portions 30, 36, and only the upper coil spring 300 remains suspended from the rod body 12. The suspended coil spring 300 is then transported to the tip of the main body 14, as shown in FIG. 10. When the coil spring 300 is transported to the tip of the main body 14, a sensor (not shown) detects the coil spring 300. When the coil spring 300 is detected, the control unit 200 controls the gripping robot 60 to stop the vibration of the rod body 12.

[0079] The control unit 200 then controls the support unit 150 to vibrate the feed unit 120, the alignment unit 130, and the delivery unit 140 shown in FIGS. 2 and 3, thereby repeating the above-described steps. By repeating the above-described steps, a plurality of coil springs 300 are transported to the tip of the main body 14, as shown in FIG. 10. When the number of coil springs 300 transported to the tip of the main body 14 reaches a predetermined number, a sensor (not shown) detects this. Then, the control unit 200 controls the gripping robot 60 to rotate the rod 12 180 degrees around the extension 16 of the rod 12 as an axis, as shown in FIGS. 10 and 11. In this state, the coil springs 300 are supplied to a subsequent process.

[0080] The lower coil spring 300 recovered in the recovery section is again inserted into the insertion port 122.

[0081] (summary) As described above, in the spring supplying device 10 and the spring supplying method, the tilting portion 20 tilts the upper coil spring 300 suspended from the rod body 12 to one side in the width direction when viewed from one direction, and the tilting portion 26 tilts the lower coil spring 300 to the other side in the width direction when viewed from the same direction, while the upper coil spring 300 is tilted to one side in the width direction. This effectively releases the engagement between the hooks 300b compared to a configuration in which air is blown onto a pair of coil springs 300 from only one direction.

[0082] Furthermore, in the spring supplying device 10 and the spring supplying method, the tilting portion 30 tilts the upper coil spring 300 suspended from the rod body 12 to the other side in the width direction when viewed from one direction, and the tilting portion 36 tilts the lower coil spring 300 to one side in the width direction when viewed from one direction, while the upper coil spring 300 is tilted to the other side in the width direction. This effectively releases the engagement between the hooks 300b compared to a configuration in which the upper coil spring is simply tilted to one side in the width direction and the lower coil spring is simply tilted to the other horizontal side.

[0083] Furthermore, in the spring supply device 10 and the spring supply method, the tilting portion 20 comes into contact with the upper coil spring 300 to tilt it, the tilting portion 26 comes into contact with the lower coil spring 300 to tilt it, the tilting portion 30 comes into contact with the upper coil spring 300 to tilt it, and the tilting portion 36 comes into contact with the lower coil spring 300 to tilt it. This allows the coil spring 300 to be tilted with a simpler configuration than when the coil spring is tilted by magnetic force.

[0084] Furthermore, in the spring supplying device 10 and the spring supplying method, the inclined portions 20, 26, 30, and 36 come into contact with the coil spring 300 due to gravity acting on the coil spring 300. This allows the coil spring 300 to be inclined with a simpler configuration than when the coil spring is inclined by gripping it.

[0085] Furthermore, in the spring supplying device 10 and spring supplying method, the main body 14 of the rod 12 is inclined relative to the horizontal direction, and the gripping robot 60 applies vibration to the rod 12, thereby transporting a pair of coil springs 300 suspended from the rod 12. Furthermore, the inclined portions 20, 26 and the inclined portions 30, 36 are aligned in the spring transport direction (one direction). As a result, the upper coil spring 300 inclines to one side and the other side in the width direction, and the lower coil spring inclines to the other side and the other side in the width direction, without moving the inclined portions 20, 26 and the inclined portions 30, 36.

[0086] Furthermore, in the spring supplying device 10 and the spring supplying method, the rod 12 is formed with notches 12a and knurled portions 12b that delay the transport of the pair of coil springs 300 when the pair of coil springs 300 is tilted by the inclined portions 20 and 26. Furthermore, the rod 12 is formed with notches 12a and knurled portions 12b that delay the transport of the pair of coil springs 300 when the pair of coil springs is tilted by the inclined portions 30 and 36. As a result, the time taken for the hooks 300b to disengage from each other is longer than when the transport speed of the pair of coil springs is constant throughout, thereby effectively disengaging the hooks 300b from each other.

[0087] Second Embodiment An example of a spring supplying device and a spring supplying method according to a second embodiment of the present disclosure will be described with reference to Figures 12 to 14. Note that the second embodiment will be described mainly with respect to the parts that are different from the first embodiment. As shown in Figure 12, a spring supplying system 302 equipped with a spring supplying device 210 according to the second embodiment includes an alignment device 110, the spring supplying device 210 that supplies coil springs 300 to a subsequent process, and a control unit 400 that controls each part.

[0088] The spring supply device 210 also includes an inclined portion 220 that inclines the upper coil spring 300 suspended from the rod body 12 to one side in the width direction when viewed from one direction, and an inclined portion 226 that inclines the lower coil spring 300 to the other side in the width direction when viewed from one direction while the upper coil spring 300 is inclined to one side in the width direction.

[0089] The spring supply device 210 also includes an inclined portion 230 that inclines the upper coil spring 300 suspended from the rod body 12 toward the other side in the width direction when viewed from one direction, and an inclined portion 236 that inclines the lower coil spring 300 toward one side in the width direction when viewed from one direction while the upper coil spring 300 is inclined toward the other side in the width direction.

[0090] -Slope part 220- As shown in Figure 12, the inclined portion 220 is positioned so as to blow air onto the upper coil spring 300 of a pair of coil springs 300 that are suspended from the main body 14 of the rod body 12 and transported toward the tip of the main body 14.

[0091] The inclined portion 220 is provided with three nozzles 220a, each of which is arranged to extend in the width direction, and the three nozzles 220a are lined up along one direction in which the main body 14 of the rod body 12 extends. A conveying hose (not shown) is connected to the nozzles 220a for feeding compressed air to the nozzles 220a. As shown in Figures 13(A) and 14(A), the nozzles 220a of the inclined portion 220 are arranged below the main body 14 of the rod body 12 and on one side of the main body 14 of the rod body 12 in the width direction.

[0092] -Slope part 226- 12, the inclined portion 226 is arranged so as to blow air onto the lower coil spring 300 of a pair of coil springs 300 that are suspended from the main body 14 of the rod body 12 and transported toward the tip of the main body 14. The inclined portion 226 is an example of another inclined portion.

[0093] The inclined portion 226 has three nozzles 226a, each of which is arranged to extend in the width direction, and the three nozzles 226a are lined up along one direction in which the main body 14 of the rod 12 extends. A hose (not shown) is connected to the nozzles 226a for feeding compressed air to the nozzles 226a. As shown in Figures 13(A) and 14(A), the nozzles 226a of the inclined portion 226 are arranged below the inclined portion 220 and on the other side in the width direction with respect to the main body 14 of the rod 12.

[0094] -Slope part 230- 12, the inclined portion 230 is disposed downstream of the inclined portion 220 in the spring transport direction. The inclined portion 230 is disposed so as to blow air onto the upper coil spring 300 of a pair of coil springs 300 that are suspended from the main body 14 of the rod body 12 and transported toward the tip of the main body 14. The inclined portion 230 is an example of a second inclined portion.

[0095] The inclined portion 230 is provided with three nozzles 230a, each of which is arranged to extend in the width direction, and the three nozzles 230a are lined up along one side of the extension of the main body 14 of the rod body 12. A conveying hose (not shown) is connected to the nozzles 230a for feeding compressed air to the nozzles 230a. As shown in Figures 13(B) and 14(B), the nozzles 230a of the inclined portion 230 are arranged below the main body 14 of the rod body 12 and on the other side of the main body 14 of the rod body 12 in the width direction.

[0096] -Slope part 236- 12, inclined portion 236 is disposed downstream of inclined portion 226 in the spring transport direction. Inclined portion 236 is disposed so as to blow air onto the lower coil spring 300 of a pair of coil springs 300 that are suspended from main body 14 of rod body 12 and transported toward the tip of main body 14. Inclined portion 236 is an example of another second inclined portion.

[0097] The inclined portion 236 is provided with three nozzles 236a, each of which is arranged to extend in the width direction, and the three nozzles 236a are lined up along one side of the extension of the main body 14 of the rod 12. A conveying hose (not shown) is connected to the nozzles 236a for feeding compressed air to the nozzles 236a. As shown in Figures 13(B) and 14(B), the nozzles 236a of the inclined portion 236 are arranged below the inclined portion 230 and on one side of the main body 14 of the rod 12 in the width direction.

[0098] (Operation of Spring Supply System 302) Next, we will explain the operation of supplying the coil springs 300 one by one to the subsequent process using the spring supply system 302. In other words, we will explain the spring supply method of the coil springs 300. Note that the operation of each part below is controlled by the control unit 400.

[0099] The pair of coil springs 300, which are handed over from the delivery unit 140 and suspended from the rod body 12, are transported from the base end side to the tip end side of the main body 14, as shown in Fig. 12. Furthermore, the control unit 400 controls a compressor (not shown) to continuously blow air from the nozzles 220a, 226a and the nozzles 230a, 236a.

[0100] 13(A) and 14(A), the upper coil spring 300 of the pair of coil springs 300 being transported rotates around the main body 14 and tilts to one side in the width direction when viewed from one direction due to the air blown out from the nozzle 220a. Furthermore, with the upper coil spring 300 tilted, the lower coil spring 300 rotates around the engaged hook 300b and tilts to the other side in the width direction when viewed from one direction due to the air blown out from the nozzle 226a.

[0101] At this time, if the opening 300c of the engaged hook 300b of the upper coil spring 300 faces upward, the engagement between the hook 300b of the upper coil spring 300 and the lower hook 300b is maintained, as shown in Fig. 13(A). On the other hand, if the opening 300c of the engaged hook 300b of the upper coil spring 300 faces downward, the engagement between the hook 300b of the upper coil spring 300 and the lower hook 300b is released, as shown in Fig. 14(A). This causes the lower coil spring 300 to fall downward and be collected by a collection unit (not shown).

[0102] Furthermore, when the coil springs 300 are transported, the air blown out from the nozzle 230a causes the upper coil spring 300 to rotate around the main body 14 and tilt to the other side in the width direction when viewed from one direction, as shown in Figures 13(B) and 14(B). Furthermore, the hook 300b of the lower coil spring 300 may be engaged with the hook 300b of the upper coil spring 300. In this case, with the upper coil spring 300 tilted, the air blown out from the nozzle 236a causes the lower coil spring 300 to rotate around the engaged hook 300b and tilt to one side in the width direction when viewed from one direction, as shown in Figure 13(B).

[0103] At this time, the opening 300c of the hook 300b that is engaged faces downward in the upper coil spring 300. This causes the engagement between the hook 300b of the upper coil spring 300 and the lower hook 300b to be released, causing the lower coil spring 300 to fall downward and be collected by a collection unit (not shown).

[0104] (summary) As described above, in the spring supply device 210 and the spring supply method, the tilting unit 220 tilts the upper coil spring 300 by applying air pressure to the upper coil spring 300, and the tilting unit 226 tilts the lower coil spring 300 by applying air pressure to the lower coil spring 300. Furthermore, the tilting unit 230 tilts the upper coil spring 300 by applying air pressure to the upper coil spring 300, and the tilting unit 236 tilts the lower coil spring 300 by applying air pressure to the lower coil spring 300. This allows the coil spring 300 to be tilted with a simpler configuration than when a coil spring is tilted by magnetic force.

[0105] Furthermore, in spring supply device 210 and spring supply method, inclined portion 220, inclined portion 226, inclined portion 230, and inclined portion 236 incline coil spring 300 by blowing air onto coil spring 300. This allows coil spring 300 to be inclined with a simpler configuration than when a coil spring is inclined by applying a suction force to the coil spring.

[0106] Although the present disclosure has been described in detail with respect to specific embodiments, it will be apparent to those skilled in the art that the present disclosure is not limited to such embodiments and that various other embodiments are possible within the scope of the present disclosure. For example, in the first embodiment, the inclined portions 20 and 30 are rod-shaped, but they may also be flat, curved, or the like.

[0107] In the above embodiment, the hook 300b at one end of the coil spring 300 and the hook 300b at the other end are formed at the same angle when viewed from the direction in which the coil spring 300 extends, and the opening 300c of the hook 300b at one end and the opening 300c of the hook 300b at the other end are formed in the same direction. However, the openings 300c may be formed in different directions when viewed from the direction in which the coil spring 300 extends. Here, when the hook 300b at one end of the coil spring 300 and the hook 300b at the other end are formed at the same angle, the hooks 300b can be effectively disengaged from each other using the spring supplying device 10, 210 according to this embodiment.

[0108] In the above embodiment, the vibration of the input unit 120, the alignment unit 130, and the delivery unit 140 is stopped or started to release the engagement between the hooks 300b of the coil springs 300 one by one, but the input unit, the alignment unit, and the delivery unit may be kept vibrating at all times. In this case, the coil springs 300 that are not handed over from the tip of the delivery unit 140 to the rod body 12 fall downward and are collected in the collection unit.

[0109] Furthermore, in the above embodiment, the gripping robot 60 transports the pair of coil springs 300 by applying vibration to the rod body 12, but the pair of coil springs 300 may also be transported by increasing the inclination angle of the main body 14 of the rod body 12 relative to the horizontal direction. In the above embodiment, the rod body 12 is formed with the notched portion 12a and the knurled portion 12b, but it may be formed with either the notched portion 12a or the knurled portion 12b.

[0110] Furthermore, in the second embodiment, air is continuously blown out from the nozzles 220a, 226a, 230a, and 236a, but air may be blown out from the nozzles intermittently.

[0111] Although not specifically mentioned in the second embodiment, the air blowing strength from each of the three nozzles 220a may be adjusted. The same applies to the nozzles 226a, 230a, and 236a.

[0112] Although not specifically mentioned in the second embodiment, the timing of air spray from each of the three nozzles 220a may be adjusted. The same applies to the nozzles 226a, 230a, and 236a.

[0113] (((1))) a rod body extending in one direction that is inserted into the disengaged hooks of the pair of coil springs whose hooks are engaged with each other, and from which the pair of coil springs are suspended; an inclined portion that inclines the upper coil spring suspended from the rod body toward one horizontal side when viewed from the one direction; another inclined portion that inclines the lower coil spring toward the other horizontal side when viewed from the one side in a state in which the upper coil spring is inclined toward the one horizontal side; A spring supply device comprising:

[0114] (((2))) a second inclined portion that inclines the upper coil spring suspended from the rod body toward the other horizontal side when viewed from the one direction; another second inclined portion that inclines the lower coil spring toward one side in the horizontal direction when viewed from the one direction in a state in which the upper coil spring is inclined toward the other side in the horizontal direction; The spring supply device according to (((1))) is provided with:

[0115] (((3))) the inclined portion contacts the upper coil spring to incline the upper coil spring, the other inclined portion contacts the lower coil spring to incline the lower coil spring, the second inclined portion contacts the upper coil spring to incline the upper coil spring, the other second inclined portion contacts the lower coil spring to incline the lower coil spring; The spring supply device according to (((2))).

[0116] (((4))) the inclined portion, the other inclined portion, the second inclined portion, and the other second inclined portion come into contact with the coil spring due to gravity applied to the coil spring. The spring supply device according to (((3))).

[0117] (((5))) the tilting portion tilts the upper coil spring by applying air pressure to the upper coil spring, the other inclination portion inclines the lower coil spring by applying air pressure to the lower coil spring; the second inclination portion inclines the upper coil spring by applying air pressure to the upper coil spring, The other second inclination portion inclines the lower coil spring by applying air pressure to the lower coil spring. The spring supply device according to (((2))).

[0118] (((6))) the inclined portion, the other inclined portion, the second inclined portion, and the other second inclined portion incline the pair of coil springs by blowing air onto the coil springs; The spring supply device according to (((5))).

[0119] (((7))) The rod is inclined relative to the horizontal direction, an applying unit that applies a conveying force to the pair of coil springs suspended from the rod body, thereby conveying the pair of coil springs; the inclined portion and the other inclined portion, and the second inclined portion and the other second inclined portion are aligned in a conveying direction in which the pair of coil springs are conveyed, the pair of coil springs transported by the applying portion are inclined by the inclined portion and the other inclined portion, and then inclined by the second inclined portion and the other second inclined portion; The spring supplying device according to any one of (((2))) to (((6))).

[0120] (((8))) The rod body is formed with a delay portion that delays the transport of the pair of coil springs in a state inclined by the inclined portion and the other inclined portion, and another delay portion that delays the transport of the pair of coil springs in a state inclined by the second inclined portion and the other second inclined portion. The spring supply device according to (((7))).

[0121] (((9))) A spring supplying method for supplying a coil spring using the spring supplying device described in any one of (((1))) to (((8))).

[0122] According to the spring supplying device of (((1))), the engagement between the hooks can be released more effectively than in a configuration in which air is blown onto a pair of coil springs from only one direction.

[0123] According to the spring supply device of (((2))), the engagement between the hooks can be released more effectively than when the upper coil spring is simply tilted horizontally to one side and the lower coil spring is simply tilted horizontally to the other side.

[0124] According to the spring supplying device of (((3))), the coil spring can be tilted with a simpler structure than when the coil spring is tilted by magnetic force.

[0125] According to the spring supplying device of (((4))), the coil spring can be tilted with a simpler structure than when the coil spring is tilted by gripping it.

[0126] According to the spring supplying device of (((5))), the coil spring can be tilted with a simpler structure than when the coil spring is tilted by magnetic force.

[0127] According to the spring supplying device of (((6))), the coil spring can be tilted with a simpler configuration than when a suction force is applied to the coil spring to tilt the coil spring.

[0128] According to the spring supply device of ((((7))), the upper coil spring can be tilted horizontally to one side and the other side, and the lower coil spring can be tilted horizontally to the other side and one side, without moving the inclined portion and the other inclined portion and the second inclined portion and the other second inclined portion.

[0129] According to the spring supplying device of (((8))), the hooks can be disengaged more effectively than when the speed of conveyance of the pair of coil springs is constant throughout.

[0130] According to the spring supplying method of (((9))), the engagement between the hooks can be released more effectively than in a configuration in which air is blown onto a pair of coil springs from only one direction. [Explanation of symbols]

[0131] 10 Spring supply device 12 Rod 12a Notch section (an example of a delay section) 12b Knurled section (an example of another delay section) 20 Slope 26 Inclined section (an example of another inclined section) 30 Inclined portion (an example of a second inclined portion) 36 Inclined portion (an example of another second inclined portion) 60 Grasping robot (an example of the attachment unit) 210 Spring supply device 220 Inclined section 226 Inclined section (an example of another inclined section) 230 Inclined portion (an example of a second inclined portion) 236 Inclined portion (an example of another second inclined portion) 300 coil spring 300b hook 300c aperture

Claims

1. a rod body extending in one direction that is inserted into the disengaged hooks of the pair of coil springs whose hooks are engaged with each other, and from which the pair of coil springs are suspended; an inclined portion that inclines the upper coil spring suspended from the rod body toward one horizontal side when viewed from the one direction; another inclined portion that inclines the lower coil spring toward the other horizontal side when viewed from the one side in a state in which the upper coil spring is inclined toward the one horizontal side; A spring supply device comprising:

2. a second inclined portion that inclines the upper coil spring suspended from the rod body toward the other horizontal side when viewed from the one direction; another second inclined portion that inclines the lower coil spring toward one side in the horizontal direction when viewed from the one direction in a state in which the upper coil spring is inclined toward the other side in the horizontal direction; The spring supply device of claim 1 , comprising:

3. the inclined portion contacts the upper coil spring to incline the upper coil spring, the other inclined portion contacts the lower coil spring to incline the lower coil spring, the second inclined portion contacts the upper coil spring to incline the upper coil spring, the other second inclined portion contacts the lower coil spring to incline the lower coil spring; 3. The spring supply device according to claim 2.

4. the inclined portion, the other inclined portion, the second inclined portion, and the other second inclined portion come into contact with the coil spring due to gravity applied to the coil spring.

4. The spring supply device according to claim 3.

5. the tilting portion tilts the upper coil spring by applying air pressure to the upper coil spring, the other inclination portion inclines the lower coil spring by applying air pressure to the lower coil spring; the second inclination portion inclines the upper coil spring by applying air pressure to the upper coil spring, The other second inclination portion inclines the lower coil spring by applying air pressure to the lower coil spring.

3. The spring supply device according to claim 2.

6. the inclined portion, the other inclined portion, the second inclined portion, and the other second inclined portion incline the pair of coil springs by blowing air onto the coil springs; 6. The spring supply device according to claim 5.

7. The rod is inclined relative to the horizontal direction, an applying unit that applies a conveying force to the pair of coil springs suspended from the rod body, thereby conveying the pair of coil springs; the inclined portion and the other inclined portion, and the second inclined portion and the other second inclined portion are aligned in a conveying direction in which the pair of coil springs are conveyed, the pair of coil springs transported by the applying portion are inclined by the inclined portion and the other inclined portion, and then inclined by the second inclined portion and the other second inclined portion; 3. The spring supply device according to claim 2.

8. The rod body is formed with a delay portion that delays the transport of the pair of coil springs in a state inclined by the inclined portion and the other inclined portion, and another delay portion that delays the transport of the pair of coil springs in a state inclined by the second inclined portion and the other second inclined portion.

8. The spring supply device of claim 7.

9. A spring supplying method for supplying a coil spring using the spring supplying device according to any one of claims 1 to 8.

Images