Synchronous conveying avoiding structure

Abstract

The application discloses a synchronous conveying avoiding structure, which comprises a bottom plate, two feeding jigs are arranged on the bottom plate, the two feeding jigs are symmetrically arranged on the two sides of the middle axis L2 of the bottom plate along the Y-axis direction, the middle axis L1 of the coil seat on the feeding jig with the coil coincides with the middle axis L2 of the bottom plate during feeding, in order to avoid mutual interference of the two feeding jigs, the two feeding jigs are both provided with a sliding assembly two, the sliding assembly two can make the feeding jig without the coil avoid the feeding jig with the coil, the feeding jig with the coil is conveyed to the next working position for processing without obstacles and quickly, and the other feeding jig is used for feeding simultaneously during the processing of the coil, the waiting time of other mechanisms during the conveying of the coil is reduced, and the conveying efficiency is greatly improved; in addition, the two feeding jigs are independent and do not interfere with each other, and the situation that the whole machine cannot produce when the feeding jig breaks down in the prior art can be effectively avoided.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of coil processing, and particularly relates to a synchronous conveying avoidance structure. BACKGROUND

[0002] In a winding and welding integrated machine, the completed coil needs to be conveyed to a paint stripping, welding and other workstations for further processing to realize full-automatic production, reduce manual intervention and improve production efficiency. However, the existing conveying technology mostly adopts a single conveying jig. For example, after winding is completed, the coil is placed on the conveying jig, and the conveying jig is moved to the next workstation until all workstations are processed, and then the conveying jig is moved back for feeding. As a result, the winding mechanism needs to wait for a long time after winding is completed, and the winding cannot be continued until the conveying jig is reset, which wastes a lot of time and is low in efficiency. On the other hand, if the conveying jig fails, the coil cannot be processed continuously during the waiting for repair. SUMMARY

[0003] (1) Technical problem to be solved

[0004] The application discloses a synchronous conveying avoidance structure, which aims to solve the problems of low conveying efficiency of the coil and inability to continue processing when the conveying jig fails in the prior art.

[0005] (2) Technical scheme

[0006] The application discloses a synchronous conveying avoidance structure, which comprises a bottom plate, two feeding jigs independently sliding along an X-axis direction are arranged on the bottom plate, and the two feeding jigs are symmetrically arranged on both sides of a middle axis L2 of the bottom plate along a Y-axis direction; the feeding jig comprises a base and a feeding assembly, the base is slidingly connected to the bottom plate, and the feeding assembly is slidingly connected above the base along the Y-axis direction; the bottom plate is provided with a loading position and an unloading position, and the feeding jig conveys the coil on the loading position to the unloading position; a plurality of coil seats distributed along the X-axis direction are arranged on the feeding assembly;

[0007] When feeding, the feeding assembly of the feeding jig with the coil moves towards the middle axis L2 of the bottom plate so that the middle axis L1 of the coil seat coincides with the middle axis L2 of the bottom plate to install the coil.

[0008] When the feeding jig without the coil meets the feeding jig with the coil, the feeding assembly in the feeding jig without the coil moves away from the middle axis L2 of the bottom plate and avoids the feeding assembly in the feeding jig with the coil.

[0009] Further, the bottom plate is provided with an elongated hollow structure at the position of the middle axis L2, which divides the bottom plate into bottom plate one and bottom plate two, and the two feeding jigs are arranged on the bottom plate one and the bottom plate two respectively.

[0010] Further, a sliding assembly one is arranged between the bottom plate one or the bottom plate two and the feeding jigs, which comprises a sliding rail one arranged on both sides of the lower end face of the bottom plate one or the bottom plate two, a sliding block one slidingly connected to the sliding rail one, and a connecting plate fixedly arranged on the lower end face of the sliding block one, and the base is arranged on the upper end face of the sliding block one, so that the base and the connecting plate are arranged in suspension on the upper and lower end faces of the bottom plate one or the bottom plate two respectively.

[0011] Further, a driving member one is arranged on the bottom plate one or the bottom plate two, and the output end of the driving member one is fixedly connected with the sliding assembly one.

[0012] Further, a sliding assembly two is arranged between the base and the feeding assembly, which comprises a sliding rail two fixedly arranged on the base, the sliding direction of the sliding rail two is perpendicular to the direction of the middle axis L2 of the bottom plate, and a sliding block two is arranged on the sliding rail two, and the top of the sliding block two is fixedly connected with the feeding assembly.

[0013] Further, a driving member two is arranged on the base for driving the feeding assembly to slide, and the driving member two is a gas cylinder or a screw rod structure.

[0014] Further, a limiting block is further fixedly arranged on the base, and at least part of the limiting block is in sliding abutment with the bottom of the feeding assembly, so as to limit the moving distance of the feeding assembly.

[0015] Further, the feeding assembly comprises a sliding plate one slidingly connected with the base and a fixed plate arranged above the sliding plate one, and the coil seat is arranged on the fixed plate; a lifting mechanism is arranged between the sliding plate one and the fixed plate, and the lifting mechanism is used for driving the feeding assembly to move up and down.

[0016] Further, a plurality of guide assemblies are arranged between the fixed plate and the sliding plate one, one end of the guide assembly is fixedly connected with the sliding plate one, and the other end is fixedly connected with the fixed plate.

[0017] Further, a plurality of driving members four corresponding to the coil seat are fixedly arranged on the fixed plate, the coil seat is provided with a coil shaft, and the output shaft of the driving member four is fixedly connected with the coil shaft.

[0018] Compared with the prior art, the present application has the following beneficial effects:

[0019] Two groups of feeding jigs which are symmetrical and have same structure are arranged, the feeding jigs are reciprocated on the bottom plate, and the middle axis L1 of the coil seat on the feeding jigs with coils coincides with the middle axis L2 of the bottom plate during feeding, in order to avoid the interference between the two feeding jigs, the sliding assembly two is arranged on the two feeding jigs, the sliding assembly two can make the feeding jigs without coils avoid the feeding jigs with coils, so that the feeding jigs with coils are transported to the next station for processing without obstacles and quickly, and the other group of feeding jigs is loaded at the same time during the processing of the coils, the waiting time of other mechanisms during the transportation of the coils is reduced, the transportation efficiency is greatly improved, so that the production efficiency of the whole machine is greatly improved, in addition, the two groups of feeding jigs are independent and do not interfere with each other, so that the situation that the whole machine cannot produce when the feeding jigs fail in the prior art can be avoided. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0021] Figure 2 It is a partial exploded view of the overall structure of the present application.

[0022] Figure 3 It is a schematic diagram of the avoidance of the two groups of feeding jigs Figure 1 .

[0023] Figure 4 It is a schematic diagram of the avoidance of the two groups of feeding jigs Figure 2 .

[0024] Figure 5 It is a schematic diagram of the structure of the sliding assembly one and the driving part one Figure 1 .

[0025] Figure 6 It is a schematic diagram of the structure of the sliding assembly one and the driving part one Figure 2 .

[0026] Figure 7 It is a schematic diagram of the side structure of the present application.

[0027] Figure 8 It is a schematic diagram of the structure of the feeding assembly of the present application.

[0028] Figure 9 It is an enlarged view of M of the present application Figure 1 .

[0029] Figure 10 It is a schematic diagram of the lifting assembly embodiment of the present application Figure 1 .

[0030] Figure 11 It is a schematic diagram of the lifting assembly embodiment of the present applicationFigure 2 .

[0031] Label: 1 - bottom plate, 11 - loading position, 12 - unloading position, 13 - bottom plate one, 14 - bottom plate two, 2 - feeding jig, 21 - base, 211 - limit block, 22 - feeding assembly, 221 - coil seat, 2211 - coil shaft, 222 - sliding plate one, 223 - fixed plate, 224 - driving piece four, 225 - pulley, 3 - hollow structure, 4 - sliding assembly one, 41 - sliding rail one, 42 - sliding block one, 43 - connecting plate, 44 - driving piece one, 441 - screw rod, 442 - nut, 443 - motor, 5 - sliding assembly two, 51 - sliding rail two, 52 - sliding block two, 53 - driving piece two, 6 - lifting mechanism, 61 - sliding rail three, 62 - driving piece three, 63 - sliding plate two, 64 - inclined block, 7 - guide assembly, 71 - guide column, 72 - guide sleeve, 73 - elastic piece, 8 - spring. DETAILED DESCRIPTION

[0032] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0033] As shown in Figures 1-2 The present application discloses a conveying avoiding structure, comprising a bottom plate 1, wherein two feeding jigs 2 are arranged on the bottom plate 1 and can slide independently along the X-axis direction, and the two feeding jigs 2 are symmetrically arranged on both sides of the central axis L2 of the bottom plate 1 along the Y-axis direction; the feeding jig 2 comprises a base 21 and a feeding assembly 22, the base 21 is slidingly connected to the bottom plate 1, and the feeding assembly 22 is slidingly connected above the base 21 along the Y-axis direction; a plurality of coil seats 221 are arranged on the feeding assembly 22 and are distributed along the X-axis direction; a loading position 11 and an unloading position 12 are arranged on the bottom plate 1, and the feeding jig 2 is used for conveying the coil on the loading position 11 to the unloading position 12.

[0034] As shown in Figures 3-4As shown, when feeding, the feeding assembly 22 in the feeding jig 2 with the coil moves to the middle axis L2 of the bottom plate 1, so that the middle axis L1 of the coil seat 221 coincides with the middle axis L2 of the bottom plate 1 to install the coil. Therefore, in order to avoid the mutual interference of the feeding assembly 22 of the two feeding jigs 2 during conveying, one of the feeding assembly 22 needs to avoid the other. In the present application, when the feeding jig 2 without a coil meets the feeding jig 2 with a coil, the feeding assembly 22 in the feeding jig 2 without a coil needs to move away from the middle axis L2 of the bottom plate 1 and avoid the feeding assembly 22 in the feeding jig 2 with a coil, so that the feeding jig 2 with a coil can pass first, so as to be conveyed to the next station for processing without obstacles and quickly, thereby reducing the waiting time of other mechanisms and improving the production efficiency. In addition, the two feeding jigs 2 are independent of each other and do not interfere with each other. When one of the feeding jigs 2 fails, the other feeding jig 2 can continue to convey during maintenance, thereby effectively avoiding the situation that the entire machine cannot produce when the feeding jig 2 fails in the prior art.

[0035] Specifically, the bottom plate 1 is provided with an elongated hollow structure 3 at the position of the middle axis L2, which divides the bottom plate 1 into bottom plate one 13 and bottom plate two 14, and the two feeding jigs 2 are arranged on the bottom plate one 13 and the bottom plate two 14 respectively, and the two ends of the bottom plate 1 are fixedly connected with the supports (not shown in the figure) of the whole machine.

[0036] Further, as shown, Figure 5 The sliding assembly one 4 is used to drive the two feeding jigs 2 to slide on the bottom plate 1. The sliding assembly one 4 includes slide rails one 41 arranged on both sides of the lower end face of the bottom plate one 13 or the bottom plate two 14, sliding blocks one 42 slidingly connected on the slide rails one 41, and connecting plates 43 fixedly arranged on the lower end face of the sliding blocks one 42. The base 21 is arranged on the upper end face of the sliding block one 42, so that the base 21 and the connecting plate 43 are arranged in suspension on the upper and lower end faces of the bottom plate one 13 or the bottom plate two 14, that is, the upper end face of the sliding block one 42 is higher than the upper end face of the bottom plate 1. Therefore, the middle part of the bottom plate 1 is provided with the hollow structure 3, so that the sliding block one 42 close to the middle axis L2 of the bottom plate 1 passes through the hollow structure 3 and is fixedly connected with the base 21, so that the sliding block one 42, the base 21 and the connecting plate 43 form a structure surrounding the bottom plate one 13 or the bottom plate two 14, thereby facilitating the synchronous conveying of the two groups of feeding jigs 2 on the same bottom plate 1.

[0037] Further, as shown,Figure 6 As shown, the bottom plate one 13 or the bottom plate two 14 is provided with a driving member one 44, and the output end of the driving member one 44 is fixedly connected with the connecting plate 43 of the sliding assembly one 4. In the embodiment of the application, the driving member one 44 comprises a screw rod 441, a nut 442 and a motor 443, the motor 443 is fixed on one end of the bottom plate one 13 or the bottom plate two 14, one end of the screw rod 441 is connected with the motor 443, and the other end is rotatably connected with the other end of the bottom plate 1 away from the motor 443, the nut 442 is arranged on the screw rod 441 and is in threaded connection with the screw rod 441, and the outer wall of the nut 442 is fixedly connected with the connecting plate 43. The motor 443 drives the screw rod 441 to rotate to threadedly drive the nut 442 to move along the axis direction of the screw rod 441, so as to drive the connecting plate 43 to move, and under the guidance of the sliding rail one 41, the movement of the connecting plate 43 can smoothly drive the movement of the base 21, so as to drive the movement of the feeding assembly 22, so as to realize the conveying function of the feeding assembly 22, and the structure is simple and practical.

[0038] Further, as shown in the figure, Figures 7-8 Since the feeding assembly 22 needs to move along the Y-axis direction to avoid at the same time of moving along the X-axis direction, the sliding assembly two 5 is arranged between the base 21 and the feeding assembly 22, the sliding assembly two 5 comprises a sliding rail two 51 fixedly arranged on the base 21, the sliding direction of the sliding rail two 51 is perpendicular to the direction of the central axis L2 of the bottom plate 1, so as to move in the Y-axis direction to avoid, and the sliding rail two 51 is provided with a sliding block two 52, the top of the sliding block two 52 is fixedly connected with the feeding assembly 22, and the synchronous movement of the feeding assembly 22 can be realized by moving the sliding block two 52.

[0039] Further, the base 21 is provided with a driving member two 53 for driving the sliding of the feeding assembly 22, the driving member two 53 is a gas cylinder or a screw rod structure, in the embodiment, the driving member two 53 is fixedly arranged on the base 21, and the output shaft of the driving member two 53 is fixedly connected with the feeding assembly 22, so that the feeding assembly 22 can slide forward and backward under the guidance of the sliding rail two 51 by driving the driving member two 53, so as to realize the effect that the feeding assembly 22 without a coil avoids the feeding assembly 22 with a coil.

[0040] Preferably, as shown in the figure, Figure 9As shown, the base 21 is further fixed with a limiting block 211 at one end away from the axis L2 of the bottom plate 1, and the limiting block 211 at least partially slides against the bottom of the feeding assembly 22 to limit the moving distance of the feeding assembly 22, so as to prevent the feeding assembly 22 from moving too fast and falling off the second sliding rail 51, thereby avoiding the risk of damaging the feeding assembly 22.

[0041] Further, as shown, Figures 10-11 The feeding assembly 22 comprises a sliding plate one 222 slidably connected with the base 21 and a fixed plate 223 arranged above the sliding plate one 222, and the coil seat 221 is arranged on the fixed plate 223; the lifting mechanism 6 is arranged between the sliding plate one 222 and the fixed plate 223, and the lifting mechanism 6 comprises a third sliding rail 61 arranged on the sliding plate one 222 and a driving member three 62, the third sliding rail 61 is slidably connected with a sliding plate two 63, two inclined blocks 64 are fixedly arranged on the sliding plate two 63, and two pulleys 225 are fixedly arranged on the lower end surface of the fixed plate 223 corresponding to the positions of the two inclined blocks 64, and the two pulleys 225 slide against the inclined surfaces of the two inclined blocks 64. The output shaft of the driving member three 62 is fixedly connected with the sliding plate two 63, the driving member three 62 drives the sliding plate two 63 to move along the sliding direction of the third sliding rail 61, so that the pulleys 225 slide on the inclined surfaces of the inclined blocks 64. Here, the upper and lower inclined surfaces of the inclined blocks 64 are marked as end surface A and end surface B respectively. When the pulleys 225 slide to the end surface A of the inclined blocks 64, the fixed plate 223 moves upward to make the coils on the coil seat 221 contact and weld with the material belt. When the pulleys 225 slide to the end surface B of the inclined blocks 64, the fixed plate 223 moves downward to reset. The pulleys 225 and the inclined blocks 64 cooperate to realize the upward and downward movement of the coil seat 221, which is simple in structure and convenient to operate.

[0042] Further, as shown, Figure 2 , Figure 7 To enhance the stability of the lifting between the fixed plate 223 and the sliding plate one 222, a plurality of guide assemblies 7 are arranged between the fixed plate 223 and the sliding plate one 222, one end of each guide assembly 7 is fixedly connected with the sliding plate one 222, and the other end is fixedly connected with the fixed plate 223. The guide assembly 7 comprises a guide column 71 and a guide sleeve 72 sleeved on the guide column 71. Since the lifting mechanism 6 is used to drive the fixed plate 223 to move upward to make the coils contact and weld with the material belt, an elastic member 73 is arranged between the guide column 71 and the guide sleeve 72, so that the guide assembly 7 can be stretched and contracted upward and downward through the elastic member 73, thereby supporting and fixing the guide assembly 7 and buffering the lifting of the coil seat 221.

[0043] Preferably, in the embodiment of the present application, a plurality of springs 8 are further arranged at both ends of the fixed plate 223, and the two ends of each spring 8 are connected with the end wall of the slide plate 222 and the fixed plate 223 respectively, so that the fixed plate 223 is further pressed tightly at both ends of the guide assembly 7 by the restoring force of the plurality of springs 8, and the stability of the coil seat 221 is ensured, thereby providing guarantee for the accuracy of subsequent processing.

[0044] Further, as shown in the drawings, a plurality of driving members four 224 corresponding to the coil seat 221 are further fixed on the fixed plate 223, the coil seat 221 is provided with a coil shaft 2211, and the output shaft of the driving member four 224 is fixedly connected with the coil shaft 2211, so that the coil shaft 2211 can be driven to ascend and descend in the coil seat 221 by the driving of the driving member four 224, so that the coil can be quickly and accurately placed on the coil seat 221, and in the embodiment of the present application, the driving member four 224 is preferably a pneumatic cylinder. Figure 8

[0045] The working principle of the present application will be described in detail as follows:

[0046] When the feeding jig 2 is located at the loading position 11 of the bottom plate 1, the feeding assembly 22 on the feeding jig 2 moves to the direction of the central axis L2 of the bottom plate 1 so that the central axis L1 of the coil seat 221 coincides with the central axis L2 of the bottom plate 1 to install the coil, and when all the coils are placed on the coil seat 221, the feeding jig 2 moves to the direction of the unloading position 12, and when the feeding jig 2 without coil meets the feeding jig 2 with coil, the feeding assembly 22 in the feeding jig 2 without coil moves away from the central axis L2 of the bottom plate 1 under the action of the sliding assembly two 5, and the feeding assembly 22 in the feeding jig 2 with coil is avoided, so that the feeding jig 2 with coil does not need to wait and quickly moves along the unloading position 12 of the bottom plate 1, and when the feeding jig 2 with coil moves away, the feeding jig 2 without coil continues to move to the loading position 11 for loading, so that two groups of feeding jigs 2 are arranged at the same loading position 11 to achieve the purpose of synchronous conveying, the efficiency of feeding is higher, and the waiting time of subsequent other mechanisms is reduced, so that the present application has the advantages of simple structure, short time and high efficiency.

[0047] ​In addition, it should be understood that although the description is made according to the embodiments, not every embodiment contains only one independent technical solution, and the description is made in this way only for the sake of clarity, and the skilled in the art should consider the description as a whole, and the technical solutions in each embodiment can also be combined appropriately to form other embodiments that can be understood by the skilled in the art.

[0048] It will be obvious to a person skilled in the art that, without departing from the spirit or essential characteristics of the application, the present application can be implemented in other specific forms. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the description given above, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claim.

Claims

1. A synchronous conveying avoidance structure, characterized by, The application relates to a feeding device for feeding coils, which comprises a bottom plate (1) provided with two feeding jigs (2) independently sliding along the X-axis direction, the two feeding jigs (2) being symmetrically arranged on the two sides of the middle axis L2 of the bottom plate (1) along the Y-axis direction; the feeding jig (2) comprises a base (21) and a feeding assembly (22), the base (21) is slidingly connected to the bottom plate (1), and the feeding assembly (22) is slidingly connected above the base (21) along the Y-axis direction; the bottom plate (1) is provided with a loading position (11) and an unloading position (12), the feeding jig (2) transports the coil on the loading position (11) to the unloading position (12), and the feeding assembly (22) is provided with a plurality of coil seats (221) distributed along the X-axis direction. When feeding, the feeding assembly (22) in the feeding jig (2) moves to the middle axis L2 of the bottom plate (1) so that the middle axis L1 of the coil seat (221) coincides with the middle axis L2 of the bottom plate (1) to install the coil. When the feeding jig (2) without a coil meets the feeding jig (2) with a coil, the feeding assembly (22) in the feeding jig (2) without a coil moves away from the middle axis L2 of the bottom plate (1) and avoids the feeding assembly (22) in the feeding jig (2) with a coil. The bottom plate (1) is provided with an elongated hollow structure (3) at the position of the middle axis L2, the hollow structure (3) divides the bottom plate (1) into a first bottom plate (13) and a second bottom plate (14), and the two feeding jigs (2) are arranged on the first bottom plate (13) and the second bottom plate (14) respectively. A sliding assembly one (4) is arranged between the first bottom plate (13) or the second bottom plate (14) and the feeding jig (2), the sliding assembly one (4) comprises slide rails one (41) arranged on the two sides of the lower end face of the first bottom plate (13) or the second bottom plate (14), slide blocks one (42) slidingly connected to the slide rails one (41), and a connecting plate (43) fixedly arranged on the lower end face of the slide blocks one (42). A sliding assembly two (5) is arranged between the base (21) and the feeding assembly (22).

2. The synchronous conveying avoiding structure according to claim 1, characterized in that, The base (21) is arranged on the upper end face of the slide blocks one (42), so that the base (21) and the connecting plate (43) are respectively arranged on the upper and lower end faces of the first bottom plate (13) or the second bottom plate (14).

3. The synchronous conveying avoiding structure according to claim 2, characterized in that, A driving member one (44) is arranged on the first bottom plate (13) or the second bottom plate (14), and the output end of the driving member one (44) is fixedly connected with the sliding assembly one (4).

4. The synchronous conveying avoiding structure according to claim 1, characterized in that, The sliding assembly two (5) comprises slide rails two (51) fixedly arranged on the base (21), the sliding direction of the slide rails two (51) is perpendicular to the direction of the middle axis L2 of the bottom plate (1), the slide rails two (51) are provided with slide blocks two (52), and the top of the slide blocks two (52) is fixedly connected with the feeding assembly (22).

5. The synchronous conveying avoiding structure according to claim 4, characterized in that, The base (21) is provided with a second driving member (53) for driving the feeding assembly (22) to slide, wherein the second driving member (53) is a gas cylinder or a screw rod structure.

6. The synchronous conveying avoiding structure according to claim 5, characterized in that, The base (21) is further provided with a limiting block (211) fixedly arranged thereon, at least a part of the limiting block (211) is in sliding abutment with the bottom of the feeding assembly (22) to limit the moving distance of the feeding assembly (22).

7. The synchronous conveying avoiding structure according to claim 1, characterized in that, The feeding assembly (22) comprises a first sliding plate (222) in sliding connection with the base (21) and a fixed plate (223) arranged above the first sliding plate (222), and the coil seat (221) is arranged on the fixed plate (223). A lifting mechanism (6) is arranged between the first sliding plate (222) and the fixed plate (223), and the lifting mechanism (6) is used for driving the fixed plate (223) to move up and down.

8. The synchronous conveying avoiding structure according to claim 7, characterized in that, A plurality of guide assemblies (7) are arranged between the fixed plate (223) and the first sliding plate (222), one end of each guide assembly (7) is fixedly connected with the first sliding plate (222), and the other end is fixedly connected with the fixed plate (223).

9. The synchronous conveying avoiding structure according to claim 8, characterized in that, A plurality of fourth driving members (224) corresponding to the coil seat (221) are fixedly arranged on the fixed plate (223), the coil seat (221) is provided with a coil shaft (2211), and the output shaft of each fourth driving member (224) is fixedly connected with the coil shaft (2211).

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