CN208437617U - A kind of loudspeaker T iron cold-heading feeding device - Google Patents

Abstract

The utility model discloses a kind of loudspeaker T iron cold-heading feeding devices, including material retractable device and two feed devices, the material retractable device is located at the centre of two feed devices, the material retractable device includes pedestal, two sliding rails, slide, two manipulators and the first cylinder, sliding rail and the first cylinder there are two being set on the pedestal, first cylinder is located between two sliding rails, the front end of the piston rod of first cylinder is equipped with the slide being coupled with two sliding rails, the slide is equipped with manipulator, the manipulator includes supporting mechanism, first attachment base, first fork body, two guide ways, two bearings, two slide masses, two springs, clamping device, second cylinder and the second fork body, compared with prior art, it can reduce labor workload, improve processing efficiency, avoid security risk caused by artificial loading.

Description

A kind of loudspeaker T iron cold-heading feeding device

[technical field]

The utility model relates to the technical field of loudspeaker T iron processing, especially a kind of loudspeaker T iron cold-heading feeding devices Technical field.

[background technique]

T iron is also electrician's iron, its quality is pure iron.It is the building block that voice unit (VU) is constituted.In sound list In member, the main function of T iron is exactly magnetic conduction in the case where energization.In order to guarantee that sound quality, T iron need to carry out multinomial processing, In include pickling-drawing-segmentation-cold-heading-annealing-cold-heading-shot-peening-it is zinc-plated.Some need to carry out turn hole, tapping etc., wherein T iron Molding needs the process by multiple cold-heading, i.e., raw material bloom is molding by extrusion, and there is no needles in existing processing technology For the feeding device of T iron cold-heading equipment, it usually needs manually fed, so that labor workload is big, processing efficiency is low, deposits In security risk.Therefore, it is necessary to a kind of loudspeaker T iron cold-heading feeding devices.

[utility model content]

The purpose of this utility model is exactly to solve the problems of the prior art, proposes a kind of loudspeaker T iron cold-heading feeding dress It sets, can reduce labor workload, improve processing efficiency, avoid security risk caused by artificial loading.

To achieve the above object, the utility model proposes a kind of loudspeaker T iron cold-heading feeding devices, including material retractable to fill Set and be located at the centre of two feed devices with two feed devices, the material retractable device, the material retractable device include pedestal, Two sliding rails, slide, two manipulators and the first cylinder are set on the pedestal there are two sliding rail and the first cylinder, described first Cylinder is located between two sliding rails, and the front end of the piston rod of first cylinder is equipped with the slide being coupled with two sliding rails, The slide is equipped with manipulator, and the manipulator includes supporting mechanism, the first attachment base, the first fork body, two guide ways, two A bearing, two slide masses, two springs, clamping device, the second cylinder and the second fork body, the supporting mechanism are equipped with first Attachment base, the upper end of first attachment base are equipped with the first fork body, are equipped with slide mass on two yokes of the first fork body, The opposite end of described two slide masses is equipped with clamping device, and the outer end of described two slide masses is equipped with bearing, and described first Two yokes of fork body pass through two springs respectively and connect two slide masses, and the upper side of first attachment base is equipped with second Cylinder, the lower end of the piston rod of second cylinder are equipped with the second fork body, and the upper end of two yokes of the second fork body is all provided with There is the guide way of working face Yu corresponding bearing touch, the working face of the guide way is inclined-plane, and the feed device includes First pedestal and the discharge mechanism and feeding mechanism being located on the first pedestal, feeding mechanism feeding from discharge mechanism carry out Friction feeding, the feeding mechanism include the first supporter, self-locking motor, the second pedestal, pneumatic linear actuator, the first slide opening, the first bar Body, second body of rod, slot, spring body, anti-lift-off, feeding set, rubber sleeve, scroll wheel, the second supporter, the second slide opening and third The body of rod, first pedestal are equipped with the first supporter and the second supporter, and first supporter is equipped with self-locking motor, institute The rotation axis for stating self-locking motor is equipped with the second pedestal, and it is sliding that second pedestal is equipped with first matched with first body of rod Hole, the lower end of second pedestal are equipped with the pneumatic linear actuator that piston rod is fixedly connected with first body of rod in the first slide opening, and described the The front end of one body of rod is equipped with the slot matched with second body of rod, and it is sliding that first body of rod is equipped with second be connected to slot Hole, second body of rod in the second slide opening be equipped with anti-lift-off, the both ends of the spring body respectively with anti-lift-off and first body of rod It is fixedly connected, the front end of second body of rod is equipped with feeding set, is equipped with rubber sleeve, the internal diameter of the rubber sleeve in the feeding set The upper end of the slightly smaller than diameter of the magnetizer of T iron part, second body of rod is equipped with the third body of rod, and the upper end of the third body of rod is set There is sphere, second supporter is equipped with the scroll wheel for stopping sphere.

Constituted preferably, the clamping device is sequentially connected by four cramping bodies head and the tail, the cramping body include ontology, Notch and connector, the both ends of the ontology are respectively equipped with notch and connector, the notch with connect mates, it is described to lack The front end of the ontology of mouth two sides is arc surface, and the connector rear end is arc surface, and the head and the tail of two neighboring cramping body are by lacking Mouthful, together with connector is rotatably connected with the cooperation of connecting shaft, the opposite end of described two slide masses respectively with former and later two Corresponding connection axis connection.

Preferably, the lower end of the piston rod of second cylinder is equipped with the second fork body, the connection by bindiny mechanism Mechanism includes the second body, screw body, turns portion and the second attachment base, the upper end of second body and the piston of the second cylinder The lower end of bar is fixedly connected, and described second set is equipped with the screw body being threadedly coupled in vivo, and the centre of the screw body, which is equipped with, to be turned Portion, the lower end of the screw body pass through the second attachment base and are threadedly coupled with it, the cross of second attachment base and the second fork body Arm body is fixedly connected.

Preferably, the supporting mechanism includes grafting body, the first body and third cylinder, the slide is equipped with grafting Body, first body that can slide up and down is arranged on the grafting body, and the upper end of first body is equipped with the first attachment base, institute The side for stating the first body is equipped with third cylinder, and the piston rod of the third cylinder is connect with slide.

Preferably, the discharge mechanism includes third supporter, discharge groove and block, the third supporter is equipped with The rear end of the discharge groove being obliquely installed, the discharge groove is equipped with block.

Preferably, the rear end of the feeding set is equipped with connecting screw, the connecting screw is inserted from the front end of second body of rod Enter and be threadedly coupled with second body of rod, the connecting screw is equipped with fastening nut in the front end of second body of rod.

The utility model has the beneficial effects that the utility model is by feeding mechanism, will to be arranged in T iron on discharge mechanism continuous It is sent to two manipulators, two manipulators, which are taken, to replace to loudspeaker T iron cold-heading under the cooperation of the first cylinder and slide after T iron Equipment carries out material retractable, compared with prior art, can reduce labor workload, improves processing efficiency, artificial loading is avoided to make At security risk.

The feature and advantage of the utility model will be described in detail by embodiment combination attached drawing.

[Detailed description of the invention]

Fig. 1 is a kind of structural schematic diagram of loudspeaker T iron cold-heading feeding device of the utility model；

Fig. 2 is the structural schematic diagram of material retractable device；

Fig. 3 is the structural schematic diagram that clamping device is mounted on slide mass；

Fig. 4 is the structural schematic diagram of cramping body；

Fig. 5 is the surveys view that manipulator is mounted on slide；

Fig. 6 is the structural schematic diagram of feed device.

In figure: 1- material retractable device, 2- feed device, 11- pedestal, 12- sliding rail, 13- slide, 14- manipulator, 15- One cylinder, 16- bindiny mechanism, 141- supporting mechanism, the first attachment base of 142-, 143- first pitch body, 144- guide way, 145- axis Hold, 146- slide mass, 147- spring, 148- clamping device, the second cylinder of 149-, 1410- second fork body, 1411- grafting body, The first body of 1412-, 1413- third cylinder, the second body of 161-, 162- screw body, 163- turn portion, the connection of 164- second Seat, 1480- ontology, 1481- notch, 1482- connector, 1483- connecting shaft, the first pedestal of 21-, 22- discharge mechanism, 23- are sent Expect mechanism, 221- third supporter, 222- block, 223- discharge groove, the first supporter of 231-, 232- self-locking motor, 233- the Two pedestals, 234- pneumatic linear actuator, the first slide opening of 235-, first body of rod of 236-, second body of rod of 237-, 238- slot, 239- spring body, The anti-lift-off of 2310-, 2311- feeding set, 2312- rubber sleeve, 2313- scroll wheel, the second supporter of 2314-, 2315- second are sliding Hole, the 2316- third body of rod, 2317- connecting screw, 2318- fastening nut, 2319- sphere.

[specific embodiment]

Refering to fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 and Fig. 6, a kind of loudspeaker T iron cold-heading feeding device of the utility model, including Material retractable device 1 and two feed devices 2, the material retractable device 1 are located at the centre of two feed devices 2, the material retractable Device 1 includes 11, two sliding rails 12 of pedestal, 13, two manipulators 14 of slide and the first cylinder 15, and the pedestal 11 is equipped with two A sliding rail 12 and the first cylinder 15, first cylinder 15 are located between two sliding rails 12, the piston rod of first cylinder 15 Front end be equipped with the slide 13 that is coupled with two sliding rails 12, the slide 13 is equipped with manipulator 14, the manipulator 14 Including supporting mechanism 141, the fork guide way 144, two 145, two, bearing of body 143, two sliding of the first attachment base 142, first 146, two springs 147 of body, clamping device 148, the second cylinder 149 and the second fork body 1410, the supporting mechanism 141 are equipped with First attachment base 142, the upper end of first attachment base 142 are equipped with the first fork body 143, two forks of the first fork body 143 Slide mass 146 is equipped on arm, the opposite end of described two slide masses 146 is equipped with clamping device 148, described two slide masses 146 outer end is equipped with bearing 145, and two yokes of the first fork body 143 pass through two springs 147 respectively and connect two cunnings The upper side of kinetoplast 146, first attachment base 142 is equipped with the second cylinder 149, the piston rod of second cylinder 149 Lower end is equipped with the second fork body 1410, and the upper end of two yokes of the second fork body 1410 is equipped with working face and corresponding axis The guide way 144 of 145 contacts is held, the working face of the guide way 144 is inclined-plane, and the feed device 2 includes the first pedestal 21 With the discharge mechanism 22 and feeding mechanism 23 being located on the first pedestal 21, the feeding mechanism 23 from feeding on discharge mechanism 22 into Row friction feeding, the feeding mechanism 23 include the first supporter 231, self-locking motor 232, the second pedestal 233, pneumatic linear actuator 234, First slide opening 235, first body of rod 236, second body of rod 237, slot 238, spring body 239, anti-lift-off 2310, feeding set 2311, Rubber sleeve 2312, scroll wheel 2313, the second supporter 2314, the second slide opening 2315 and the third body of rod 2316, first pedestal 21 are equipped with the first supporter 231 and the second supporter 2314, and first supporter 231 is equipped with self-locking motor 232, described The rotation axis of self-locking motor 232 is equipped with the second pedestal 233, and second pedestal 233 is equipped with and matches with first body of rod 236 The first slide opening 235, the lower end of second pedestal 233 is equipped with first body of rod 236 fixation in piston rod and the first slide opening 235 The pneumatic linear actuator 234 of connection, the front end of first body of rod 236 are equipped with the slot 238 matched with second body of rod 237, and described the One body of rod 236 is equipped with the second slide opening 2315 being connected to slot 238, and second body of rod 237 is set in the second slide opening 2315 There is anti-lift-off 2310, the both ends of the spring body 239 are fixedly connected with anti-lift-off 2310 and first body of rod 236 respectively, and described The front end of bipole body 237 is equipped with feeding set 2311, is equipped with rubber sleeve 2312 in the feeding set 2311, the rubber sleeve 2312 Internal diameter is slightly smaller than the diameter of the magnetizer of T iron part, and the upper end of second body of rod 237 is equipped with the third body of rod 2316, the third The upper end of the body of rod 2316 is equipped with sphere 2319, and second supporter 2314 is equipped with the scroll wheel 2313 for stopping sphere 2319, The clamping device 148 is sequentially connected by four cramping body head and the tail and is constituted, and the cramping body includes ontology 1480,1481 and of notch Connector 1482, the both ends of the ontology 1480 are respectively equipped with notch 1481 and connector 1482, the notch 1481 with connect Body 1482 matches, and the front end of the ontology 1480 of 1481 two sides of notch is arc surface, and 1482 rear end of connector is circle The head and the tail of cambered surface, two neighboring cramping body are rotatably connected by the cooperation of notch 1481, connector 1482 and connecting shaft 1483 Together, connecting shaft 1483 corresponding with former and later two connects respectively for the opposite end of described two slide masses 146, and described second The lower end of the piston rod of cylinder 149 is equipped with the second fork body 1410 by bindiny mechanism 16, and the bindiny mechanism 16 includes second set Body 161, screw body 162 turn portion 163 and the second attachment base 164, the upper end of second body 161 and the second cylinder 149 The lower end of piston rod is fixedly connected, and is equipped with the screw body 162 being threadedly coupled in second body 161, the screw body 162 Centre is equipped with the portion 163 that turns, and the lower end of the screw body 162 passes through the second attachment base 164 and is threadedly coupled with it, described second Attachment base 164 is fixedly connected with the transverse arm body of the second fork body 1410, and the supporting mechanism 141 includes grafting body 1411, first set Body 1412 and third cylinder 1413, the slide 13 are equipped with grafting body 1411, and being arranged on the grafting body 1411 can be upper and lower The upper end of first body 1412 of sliding, first body 1412 is equipped with the first attachment base 142, first body 1412 Side is equipped with third cylinder 1413, and the piston rod of the third cylinder 1413 is connect with slide 13, and the discharge mechanism 22 includes Third supporter 221, block 222 and discharge groove 223, the third supporter 221 are equipped with the discharge groove 223 being obliquely installed, The rear end of the discharge groove 223 is equipped with block 222, and the rear end of the feeding set 2311 is equipped with connecting screw 2317, the connection Screw rod 2317 is inserted into from the front end of second body of rod 237 and is threadedly coupled with second body of rod 237, and the connecting screw 2317 is second The front end of the body of rod 237 is equipped with fastening nut 2318.

Utility model works process:

During the work time, 2 course of work of feed device opens a kind of loudspeaker T iron cold-heading feeding device of the utility model The piston rod of dynamic pneumatic linear actuator 234, which stretches out, drives first body of rod 236 to move upwards, and first body of rod 236 is driven by second body of rod 237 Feeding set 2311 moves upwards, and feeding set 2311 drives 2312 sets of (discharge grooves on the magnetizer of the last one T iron part of rubber sleeve 223 are obliquely installed, and after the last one T iron part is removed, the T iron part on discharge groove 223 can be rolled automatically until by block 222 Stop, then starts self-locking motor 232, the rotation axis of self-locking motor 232 stops after rotating clockwise 180 degree, when sphere 2319 When by scroll wheel 2313, stop due to being scrolled wheel 2313, and the connecting pin of the third body of rod 2316 and second body of rod 237 can be with Second body of rod 237 continue to move, will make second body of rod 237 rotate, second body of rod 237 by feeding set 2311 drive T irons Part rotation, after the rotation axis of self-locking motor 232, which rotates clockwise 180 degree, to be stopped, second body of rod 237 also just rotates 90 degree, At this point, becoming and 21 plumbness of the first pedestal when the magnetizer of T iron part is by feeding with 21 parastate of the first pedestal.Work as T After ironware is taken away from feeding set 2311, start self-locking motor 232, after the rotation axis of self-locking motor 232 rotates counterclockwise 180 degree Stop, after sphere 2319 is detached from scroll wheel 2313, the piston rod of starting pneumatic linear actuator 234, which retracts, drives first body of rod 236 to return to Initial position.

When 2 feeding of feed device in front is completed to wait feeding, the piston rod of the first cylinder 15 of starting, which stretches out to drive, to be slided Seat 13 travels forward, and slide 13 drives two manipulators 14 to travel forward, and runs to the manipulator 14 in front at feeding, front Manipulator 14 work, starting third cylinder 1413 piston rod retract and the first body 1412 driven to move downward, first set Body 1412 drives the first fork body 143 to move downward by the first attachment base 142, and the first fork body 143 drives folder by slide mass 146 It holds mechanism 148 to move downward, until the chassis that the feed device 2 in front is transported to the T iron part of 148 lower section of clamping device enters In clamping device 148, the piston rod for then starting the second cylinder 149, which stretches out, drives the second fork body 1410 to move downward, the second fork Body 1410 drives slide mass 146 to move out by the cooperation of guide way 144 and bearing 145, and slide mass 146 pulls clamping device Then 148 start the work of third cylinder 1413 until clamping T iron part from square to diagonal equal parallelogram variation Stopper rod stretches out and the first body 1412 is driven to rise return, and the piston rod for restarting the first cylinder 15, which retracts, drives slide 13 backward Movement, slide 13 move after driving two 14 phases of manipulator, run to the manipulator 14 in front at cold-heading equipment, the machine at rear Tool hand 14, which is run to, carries out feeding operation at the feed device 2 at rear with matching, the manipulator 14 in front runs to cold When at upsetting equipment, the piston rod of starting third cylinder 1413 retracts and the first body 1412 is driven to move downward, the first body 1412 drive the first fork body 143 to move downward by the first attachment base 142, and the first fork body 143 drives clamping by slide mass 146 Mechanism 148 moves downward, and clamping device 148 drives T iron part to move downward, until the lower end of the magnetizer of T iron part enters mold In through-hole with matching, the piston rod for then starting the second cylinder 149, which retracts, drives the second fork body 1410 to move upwards, the While y-bend body 1410 drives guide way 144 to move upwards, slide mass 146 inwardly moves under the action of spring 147, until Slide mass 146 drives clamping device 148 to become square, makes have enough gaps between T iron part and clamping device 148, avoids Stop mold and punching head, after the completion of to be punched, clamping device 148 clamps the T iron part that punching press is completed, the then work of third cylinder 1413 Stopper rod stretches out and drives 1412 return of the first body, and the piston rod for then starting the first cylinder 15, which stretches out, drives slide 13 to transport forward Dynamic, slide 13 drives two manipulators 14 to travel forward, and the manipulator 14 in front is made to run to feed device 2 with matching Place carries out feeding operation, and (manipulator 14, when soon running at feed device 2, starts manipulator with the T iron part after punching press 14 unclamp the T iron part after punching press, and T iron part is fallen into deflector chute, finally enter collecting box), the manipulator 14 at rear runs to cold Blowing operation is carried out at upsetting equipment.

Compared with prior art, it can reduce labor workload, improve processing efficiency, avoid safety caused by artificial loading Hidden danger.

Above-described embodiment is the explanation to the utility model, is not the restriction to the utility model, and any pair of sheet is practical new Scheme after type simple transformation belongs to the protection scope of the utility model.

Claims (6)

1. a kind of loudspeaker T iron cold-heading feeding device, it is characterised in that: including material retractable device (1) and two feed devices (2), the material retractable device (1) is located at the centre of two feed devices (2), the material retractable device (1) include pedestal (11), Two sliding rails (12), slide (13), two manipulators (14) and the first cylinder (15), set that there are two sliding rails on the pedestal (11) (12) it is located between two sliding rails (12) with the first cylinder (15), first cylinder (15), the work of first cylinder (15) The front end of stopper rod is equipped with the slide (13) being coupled with two sliding rails (12), and the slide (13) is equipped with manipulator (14), The manipulator (14) includes supporting mechanism (141), the first attachment base (142), the first fork body (143), two guide ways (144), two bearings (145), two slide masses (146), two springs (147), clamping device (148), the second cylinder (149) With the second fork body (1410), the supporting mechanism (141) is equipped with the first attachment base (142), first attachment base (142) Upper end is equipped with the first fork body (143), is equipped with slide mass (146) on two yokes of first fork body (143), described two The opposite end of slide mass (146) is equipped with clamping device (148), and the outer end of described two slide masses (146) is equipped with bearing (145), two yokes of first fork body (143) pass through two springs (147) two slide masses (146) of connection, institute respectively The upper side for stating the first attachment base (142) is equipped with the second cylinder (149), the lower end of the piston rod of second cylinder (149) Equipped with the second fork body (1410), the upper end of two yokes of second fork body (1410) is equipped with working face and corresponding axis Hold the guide way (144) of (145) contact, the working face of the guide way (144) is inclined-plane, and the feed device (2) includes the One pedestal (21) and the discharge mechanism (22) and feeding mechanism (23) being located on the first pedestal (21), the feeding mechanism (23) from Feeding carries out friction feeding on discharge mechanism (22), and the feeding mechanism (23) includes the first supporter (231), self-locking motor (232), the second pedestal (233), pneumatic linear actuator (234), the first slide opening (235), first body of rod (236), second body of rod (237), insert Slot (238), spring body (239), anti-lift-off (2310), feeding set (2311), rubber sleeve (2312), scroll wheel (2313), second Supporter (2314), the second slide opening (2315) and the third body of rod (2316), first pedestal (21) are equipped with the first supporter (231) and the second supporter (2314), first supporter (231) are equipped with self-locking motor (232), the self-locking motor (232) rotation axis is equipped with the second pedestal (233), and second pedestal (233) is equipped with and matches with first body of rod (236) The first slide opening (235), the lower end of second pedestal (233) is equipped with first body of rod in piston rod and the first slide opening (235) (236) pneumatic linear actuator (234) being fixedly connected, the front end of first body of rod (236) is equipped with to be matched with second body of rod (237) Slot (238), first body of rod (236) are equipped with the second slide opening (2315) being connected to slot (238), second body of rod (237) anti-lift-off (2310) are equipped in the second slide opening (2315), the both ends of the spring body (239) respectively with anti-lift-off (2310) it is fixedly connected with first body of rod (236), the front end of second body of rod (237) is equipped with feeding set (2311), described to take Rubber sleeve (2312) are equipped in material set (2311), the internal diameter of the rubber sleeve (2312) is slightly smaller than the diameter of the magnetizer of T iron part, The upper end of second body of rod (237) is equipped with the third body of rod (2316), and the upper end of the third body of rod (2316) is equipped with sphere (2319), second supporter (2314) is equipped with the scroll wheel (2313) for stopping sphere (2319).

2. a kind of loudspeaker T iron cold-heading feeding device as described in claim 1, it is characterised in that: the clamping device (148) It is sequentially connected and is constituted by four cramping body head and the tail, the cramping body includes ontology (1480), notch (1481) and connector (1482), the both ends of the ontology (1480) are respectively equipped with notch (1481) and connector (1482), the notch (1481) with Connector (1482) matches, and the front end of the ontology (1480) of notch (1481) two sides is arc surface, the connector (1482) rear end is arc surface, and the head and the tail of two neighboring cramping body pass through notch (1481), connector (1482) and connecting shaft (1483) cooperation is rotatably connected together, and the opposite end of described two slide masses (146) is corresponding with former and later two respectively Connecting shaft (1483) connection.

3. a kind of loudspeaker T iron cold-heading feeding device as described in claim 1, it is characterised in that: second cylinder (149) Piston rod lower end by bindiny mechanism (16) be equipped with second fork body (1410), the bindiny mechanism (16) include the second body (161), screw body (162), turn portion (163) and the second attachment base (164), the upper end and second of second body (161) The lower end of the piston rod of cylinder (149) is fixedly connected, and the screw body (162) being threadedly coupled is equipped in second body (161), The centre of the screw body (162) is equipped with and turns portion (163), and the lower end of the screw body (162) passes through the second attachment base (164) And be threadedly coupled with it, second attachment base (164) is fixedly connected with the transverse arm body of the second fork body (1410).

4. a kind of loudspeaker T iron cold-heading feeding device as described in claim 1, it is characterised in that: the supporting mechanism (141) Including grafting body (1411), the first body (1412) and third cylinder (1413), the slide (13) is equipped with grafting body (1411), it is arranged with can slide up and down the first body (1412) on the grafting body (1411), first body (1412) Upper end be equipped with the first attachment base (142), the side of first body (1412) is equipped with third cylinder (1413), the third The piston rod of cylinder (1413) is connect with slide (13).

5. a kind of loudspeaker T iron cold-heading feeding device as described in claim 1, it is characterised in that: the discharge mechanism (22) Including third supporter (221), block (222) and discharge groove (223), the third supporter (221) is equipped with and is obliquely installed Discharge groove (223), the rear end of the discharge groove (223) is equipped with block (222).

6. a kind of loudspeaker T iron cold-heading feeding device as described in any one of claims 1 to 5, it is characterised in that: described to take The rear end of material set (2311) is equipped with connecting screw (2317), and the connecting screw (2317) is inserted from the front end of second body of rod (237) Enter and be threadedly coupled with second body of rod (237), the connecting screw (2317) is equipped with fastening spiral shell in the front end of second body of rod (237) Female (2318).