A shower connector production process

Abstract

The application provides a shower connector production process with low production cost, which comprises the following steps: S1, cutting a round pipe into a proper length; S2, placing the round pipe on a stamping device provided with a first die, performing first stamping, stamping the round pipe into a conical pipe, and then demolding; S3, placing the conical pipe on a stamping device provided with a second die, performing second stamping, punching a ring table in the conical pipe, and then demolding; S4, fixing the conical pipe with the punched ring table on a lathe to process threads; and S5, performing surface treatment on the conical pipe with the processed threads, so that the production of the shower connector is completed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of connecting piece, in particular to a shower connector production process. BACKGROUND

[0002] When the shower is used, a shower connector with a ring table inside is usually installed at the connection to facilitate the free rotation of the shower during use without easy loosening. The production methods and materials of the current shower connector are various, which are generally divided into plastic or metal. The strength of the plastic connector is low, and the metal connector is generally produced by processes such as die casting, cold heading and welding, which has high production cost. SUMMARY

[0003] Therefore, in view of the above problems, the present application provides a shower connector production process with low production cost.

[0004] To achieve the above purpose, the technical scheme of the present application provides a shower connector threaded pipe manufacturing process, which comprises the following steps:

[0005] S1 cut the round pipe into a size with appropriate length;

[0006] S2 place the round pipe on the stamping device provided with the first die, and perform first stamping to stamp the round pipe into a conical pipe, and then demold;

[0007] S3 place the conical pipe on the stamping device provided with the second die, and perform second stamping to punch out a ring table inside the conical pipe, and then demold;

[0008] S4 fix the conical pipe with the punched ring table on the lathe to process threads;

[0009] S5 perform surface treatment on the conical pipe with processed threads to complete the production of the shower connector;

[0010] The stamping device comprises a rack, a movable die holder provided on the rack and capable of sliding forward and backward through a sliding device, a power device provided on the rack and used to drive the movable die holder to slide forward and backward, a fixed die holder provided on the rack and used to cooperate with the movable die installation platform, and a first die or a second die provided between the movable die holder and the fixed die holder;

[0011] The first die comprises a first fixed die provided on the fixed die holder, a first conical hole with a certain taper and matching the size of the round pipe opened on the first fixed die, and a first movable die provided on the movable die holder and matching the taper of the conical hole to stamp the round pipe into a conical pipe;

[0012] The second die comprises a second fixed die arranged on the fixed die seat, a second conical hole arranged on the second fixed die and matched with the conical pipe for positioning the conical pipe, and a second movable die arranged on the movable die seat and matched with the conical hole in taper.

[0013] Further improvement is that the sliding device comprises a movable die sliding groove arranged on the frame and a sliding block arranged on the movable die and matched with the movable die sliding groove.

[0014] Further improvement is that the power device comprises a crankshaft rotatably arranged on the frame, a connecting rod rotatably connected to one end of the crankshaft and connected to the movable die seat in a universal manner, a main gear arranged on the frame and connected to the crankshaft, and a servo motor arranged on the frame, wherein a rotating rod of the servo motor is connected with a secondary gear and the secondary gear is engaged with the main gear.

[0015] Further improvement is that the frame is further provided with a feeding device for feeding the round pipe into the first die and the conical pipe into the second die.

[0016] Further improvement is that the feeding device comprises a conveying device arranged on the frame for storing and conveying the round pipe or the conical pipe, a feeding device arranged on the frame for receiving the round pipe or the conical pipe slid out of the conveying device, and a feeding manipulator arranged on the frame for clamping the pipe from the feeding device and then feeding it into the fixed die.

[0017] Further improvement is that the conveying device comprises a first vibrating disc arranged on the frame for placing the round pipe, and a first conveying guide arranged in communication with the first vibrating disc for conveying the round pipe to the periphery of the fixed die seat and matched with the shape of the pipe to avoid conveying errors.

[0018] Further improvement is that the conveying device comprises a second vibrating disc arranged on the frame for placing the conical pipe, a second conveying guide arranged in communication with the second vibrating disc for conveying the conical pipe to the periphery of the fixed die seat and matched with the shape of the pipe to avoid conveying errors, and a screening device further arranged on the second vibrating disc.

[0019] Further improvement is that the screening device comprises a spiral track arranged on the second vibrating disc, an inner slot arranged on the inner side of the spiral track, a screening rod arranged on the spiral track at the inner slot and extending from bottom to top for tilting the incorrect conical pipe, and an outer slot arranged on the spiral track for allowing the tilted conical pipe to fall into the second vibrating disc.

[0020] Further improvement is that the feeding device comprises a fixed base arranged on the frame, a feeding slider slidably arranged on the fixed base, a receiving port arranged on the feeding slider and angularly facing the outlet end of the conveying guide, and a first driving device arranged between the frame and the fixed base and used to drive the feeding slider to move.

[0021] Further improvement is that the first driving device comprises a first cam arranged on the frame and connected with the crankshaft to follow the rotation of the crankshaft, a first swing plate swingingly arranged on the frame and matched with the first cam, a first fixed rod arranged on the frame, an L-shaped rod hingedly connected with the fixed base, a transmission protrusion arranged on the feeding slider, a strip-shaped hole arranged on the L-shaped rod and matched with the transmission protrusion, a first tension spring arranged between the first swing plate and the first fixed rod, and a first transmission rod hingedly arranged between the other end of the L-shaped rod and the first swing plate.

[0022] Further improvement is that the feeding manipulator comprises a fixed block arranged on the frame, a rotating rod rotatably arranged in the fixed block, a height increasing rod arranged on the rotating rod and close to the fixed mold base, an extending rod arranged on the height increasing rod and extending above the mold, and a grabbing block arranged on the extending rod, wherein a grabbing port matched with the size of the pipe and used to grab the pipe is arranged on the grabbing block, and a second driving device used to drive the rotating rod to rotate is arranged on the side of the rotating rod away from the fixed mold base.

[0023] Further improvement is that the second driving device comprises a second cam arranged on the frame and connected with the crankshaft to follow the rotation of the crankshaft, a second swing plate swingingly arranged on the frame and matched with the second cam, a second fixed rod arranged on the frame, a connecting column arranged on the rotating rod, a second tension spring arranged between the second swing plate and the second fixed rod, and a second transmission rod hingedly arranged between the connecting column and the second swing plate, wherein the second cam is provided with protrusions of different sizes to make the swing amplitude of the second swing plate inconsistent, so that the grabbing block can rotate once with a small amplitude to grab the pipe and then rotate once with a large amplitude to put the pipe into the fixed mold.

[0024] Further improvement is that the frame is further provided with a demolding device facilitating the demolding and sliding of the mold completed by stamping.

[0025] Further improvement is that the demolding device comprises a demolding plate sliding groove respectively arranged on the left and right sides of the movable mold, a demolding plate support block slidably arranged in the demolding plate sliding groove, a demolding plate support rod arranged on the demolding plate support block, a demolding plate arranged on the demolding plate support rod, a demolding port arranged on the demolding plate for the movable mold to pass out, and a positioning device arranged on the rack to control the demolding plate to stop moving and reset.

[0026] Further improvement is that the positioning device comprises a threaded seat arranged on the rack, a resisting screw arranged in the threaded seat for resisting the demolding plate support block, a positioning rod arranged on the demolding plate support block, and a third tension spring with one end connected to the movable mold base and the other end connected to the positioning rod.

[0027] Further improvement is that the demolding plate is further provided with a guide hole, the fixed mold base is further provided with a first avoiding passage, and the movable mold base is provided with a guide column passing through the guide hole and the avoiding hole in sequence.

[0028] Further improvement is that the first fixed mold and the second fixed mold are respectively provided with a first demolding hole and a second demolding hole, the guide column arranged on the end passing out of the fixed mold base is further provided with a mounting plate, the mounting plate is provided with a demolding rod for being inserted into the demolding hole to push out the pipe attached to the fixed mold, and the fixed mold base is further provided with a second avoiding passage for avoiding the demolding rod.

[0029] Further improvement is that the bottom of the rack is further provided with a discharge port for discharging the pipe.

[0030] The advantages and beneficial effects of the present application are that:

[0031] Through the cooperation of the stamping device, the first mold and the second mold, the pipe is punched from a circular pipe into a conical pipe and then punched out of a ring table, which saves the cost in the production process and has low requirements for the size and thickness of the pipe, so that the cost can be saved in the material aspect. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 It is a cross-sectional view of a circular pipe in a shower connector production process of the present application;

[0033] Figure 2 It is a cross-sectional view of a conical pipe in a shower connector production process of the present application;

[0034] Figure 3 It is a cross-sectional view of a conical pipe with a ring table in a shower connector production process of the present application;

[0035] Figure 4 It is a side view of a stamping device installing a first mold in a shower connector production process of the present application;

[0036] Figure 5 Figure 1 is a schematic diagram of the second vibration disc screening device in the shower connector production process of the present application;

[0037] Figure 6 Figure 1 is a schematic diagram of the first driving device in the shower connector production process of the present application;

[0038] Figure 7 Figure 1 is a schematic diagram of the feeding device and feeding mechanic in the shower connector production process of the present application;

[0039] Figure 8 Figure 1 is a schematic diagram of the second protruding block in the shower connector production process of the present application;

[0040] Figure 9 Figure 1 is a schematic diagram of the second mold installed in the stamping device in the shower connector production process of the present application;

[0041] Figure 10 Figure 1 is a schematic diagram of the enlarged view of position A in the shower connector production process of the present application;

[0042] Figure 11 Figure 1 is a schematic diagram of the enlarged view of position B in the shower connector production process of the present application;

[0043] Figure 12 Figure 1 is a schematic diagram of the enlarged view of position C in the shower connector production process of the present application;

[0044] In the figure: 1, frame; 2, moving die holder; 3, fixed die holder; 4, first fixed die; 5, first conical hole; 6, first moving die; 7, second fixed die; 8, second conical hole; 9, second moving die; 10, ring groove; 11, main gear; 12, first vibration disc; 13, first conveying guide rail; 14, second vibration disc; 15, second conveying guide rail; 16, spiral track; 17, inner slot; 18, screening rod; 19, outer slot; 20, fixed seat; 21, feeding sliding block; 22, receiving port; 23, first cam; 24, first swing plate; 25, first fixed rod; 26, L-shaped rod; 27, transmission protrusion; 28, strip-shaped hole; 29, first tension spring; 30, first transmission rod; 31, fixed block; 32, rotating rod; 33, height increasing rod; 34, extension rod; 35, grabbing block; 36, clamping port; 37, second cam; 38, connecting column; 39, stripper plate sliding groove; 40, stripper plate support block; 41, stripper plate support rod; 42, stripper plate; 43, threaded seat; 44, resisting screw; 45, positioning rod; 46, third tension spring; 47, guide column; 48, first stripper hole; 49, second stripper hole; 50, mounting plate; 51, stripper rod; 52, discharge port. DETAILED DESCRIPTION

[0045] The specific embodiments of the present application are further described below in conjunction with the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solutions of the present application, and cannot be used to limit the protection scope of the present application.

[0046] As shown in the figure, a shower connector threaded pipe manufacturing process includes the following steps: Figures 1-12

[0047] S1 cut the pipe into a suitable length;

[0048] S2 put the pipe into the first die of the stamping device, and perform the first stamping to stamp the pipe into a conical pipe;

[0049] S3 put the conical pipe into the second die of the stamping device, and perform the second stamping to punch out a ring table inside the conical pipe;

[0050] S4 fix the conical pipe with the punched-out ring table on the lathe to process threads;

[0051] S5 perform surface treatment on the conical pipe with processed threads, and the production of the shower connector is completed;

[0052] The length of the cut pipe includes 28mm, 35mm, etc.

[0053] The ratio of the outer diameter of the top end to the outer diameter of the bottom end of the conical pipe after being stamped is 10:11.

[0054] The stamping device with the first die and the stamping device with the second die have the same structure, and therefore are not described in detail.

[0055] The stamping device includes a rack 1, a movable die holder 2 arranged on the rack 1 and capable of sliding forward and backward through a sliding device, a power device arranged on the rack 1 and used to drive the movable die holder 2 to slide forward and backward, and a fixed die holder 3 arranged on the rack 1 and used to cooperate with the movable die installation platform, wherein the movable die holder 2 is provided with the first die or the second die between the fixed die holder 3.

[0056] The first die includes a first fixed die 4 arranged on the fixed die holder 3, a first conical hole 5 with a certain taper and matching the size of the pipe opened on the first fixed die 4, and a first movable die 6 arranged on the movable die holder 2 and matching the taper of the conical hole and used to stamp the pipe into a conical pipe.

[0057] The second die includes a second fixed die 7 arranged on the fixed die holder 3, a second conical hole 8 matching the conical pipe and used to position the conical pipe opened on the second fixed die 7, and a second movable die 9 arranged on the movable die holder 2 and matching the taper of the conical hole, wherein the second movable die 9 has a ring groove 10 at the foremost end and used to punch out a ring table inside the conical pipe. ​

[0058] In order to make the movable die seat 2 slide along the fixed track, the sliding device comprises a movable die sliding groove (not shown in the figure) opened on the frame 1, and a sliding block (not shown in the figure) arranged on the movable die seat 2 and matched with the movable die sliding groove.

[0059] In order to drive the movable die seat 2 to slide forward and backward, the power device comprises a crankshaft (not shown in the figure) rotatably arranged on the frame 1, a connecting rod (not shown in the figure) having one end rotatably connected to the crankshaft and the other end connected to the movable die seat 2 through a universal transmission, a main gear 11 arranged on the frame 1 and connected to the crankshaft, and a servo motor (not shown in the figure) arranged on the frame 1, wherein a rotating rod of the servo motor is connected to a secondary gear (not shown in the figure) which is engaged with the main gear 11.

[0060] In order to facilitate the placement of the pipe into the fixed die, the frame 1 is further provided with a feeding device for enabling the round pipe to enter the first die and the conical pipe to enter the second die, which comprises a conveying device arranged on the frame 1 for storing and conveying the round pipe or the conical pipe, a feeding device arranged on the frame 1 for receiving the round pipe or the conical pipe sliding out of the conveying device, and a feeding manipulator arranged on the frame 1 for clamping the pipe from the feeding device and then feeding it into the fixed die.

[0061] In order to facilitate the conveying of the round pipe, the conveying device comprises a first vibrating disc 12 arranged on the frame 1 for placing the round pipe, and a first conveying guide rail 13 connected to the first vibrating disc 12 for conveying the round pipe to the side of the fixed die seat 3 and matching the shape of the pipe to avoid conveying errors.

[0062] In order to facilitate the conveying of the conical pipe, the conveying device comprises a second vibrating disc 14 arranged on the frame 1 for placing the conical pipe, and a second conveying guide rail 15 connected to the second vibrating disc 14 for conveying the conical pipe to the side of the fixed die seat 3 and matching the shape of the pipe to avoid conveying errors, wherein the second vibrating disc 14 is further provided with a screening device, which comprises a spiral track 16 arranged on the second vibrating disc 14, an inner slot 17 opened on the inner side of the spiral track 16, a screening rod 18 arranged on the spiral track 16 at the inner slot 17 and extending from bottom to top in an inclined manner for tilting the incorrect conical pipe, and an outer slot 19 opened on the spiral track 16 for enabling the tilted conical pipe to fall into the second vibrating disc 14, wherein when the thicker end of the conical pipe is located at the bottom, it will collide with the screening rod 18 and be turned over, so as to slide out of the outer slot 19 during the conveying process, and when the thinner end of the conical pipe is located at the bottom, it will not collide with the screening rod 18, so as to keep the state through the part with the outer slot 19.

[0063] In order to send the pipe into the feeding manipulator, the feeding device comprises: a fixed base 20 arranged on the frame 1, a feeding slider 21 slidably arranged on the fixed base 20, a receiving port 22 arranged on the feeding slider 21 and angularly facing the outlet end of the conveying guide rail, a first driving device arranged between the frame 1 and the fixed base 20 for driving the feeding slider 21 to move, the first driving device comprising: a first cam 23 arranged on the frame 1 and connected with the crankshaft for following the rotation of the crankshaft, a first swing plate 24 swingably arranged on the frame 1 for cooperating with the first cam 23, a first fixed rod 25 arranged on the frame 1, an L-shaped rod 26 hingedly connected with the fixed base 20, a transmission protrusion 27 arranged on the feeding slider 21, a strip-shaped hole 28 arranged on the L-shaped rod 26 for cooperating with the transmission protrusion 27, a first tension spring 29 arranged between the first swing plate 24 and the first fixed rod 25, and a first transmission rod 30 hingedly arranged between the other end of the L-shaped rod 26 and the first swing plate 24.

[0064] In order to facilitate the clamping of the pipe, the feeding manipulator comprises: a fixed block 31 arranged on the frame 1, a rotating rod 32 rotatably arranged in the fixed block 31, a height increasing rod 33 arranged on the rotating rod 32 close to one end of the mold base 3, an extension rod 34 arranged on the height increasing rod 33 for extending above the mold, and a grabbing block 35 arranged on the extension rod 34, the grabbing block 35 being provided with a clamping port 36 matching the size of the pipe for clamping the pipe, the side of the rotating rod 32 away from the mold base 3 being provided with a second driving device for driving the rotating rod 32 to rotate, the second driving device comprising: a second cam 37 arranged on the frame 1 and connected with the crankshaft for following the rotation of the crankshaft, a second swing plate (not shown in the figure) swingably arranged on the frame 1 for cooperating with the second cam 37, a second fixed rod (not shown in the figure) arranged on the frame 1, a connecting column 38 arranged on the rotating rod 32, a second tension spring (not shown in the figure) arranged between the second swing plate and the second fixed rod, and a second transmission rod (not shown in the figure) hingedly arranged between the connecting column 38 and the second swing plate, the second cam 37 being provided with protrusions of different sizes for making the swing amplitude of the second swing plate inconsistent, so that the grabbing block 35 can rotate once with a small amplitude to clamp the pipe and then rotate once with a large amplitude to put the pipe into the mold.

[0065] In order to facilitate demolding, the rack 1 is further provided with a demolding device facilitating the demolding and sliding of the die completed by punching, the demolding device comprising: a demolding plate 42 sliding groove 39 respectively opened on the left and right sides of the movable die, a demolding plate 42 support block 40 slidably arranged in the demolding plate 42 sliding groove 39, a demolding plate 42 support rod 41 arranged on the demolding plate 42 support block 40, a demolding plate 42 arranged on the demolding plate 42 support rod 41, a demolding port (not shown in the figure) opened on the demolding plate 42 for the movable die to pass out, and a positioning device arranged on the rack 1 to control the demolding plate 42 to stop moving and reset.

[0066] In order to make the demolding plate 42 cooperate with the movable die seat 2, the positioning device comprises: a threaded seat 43 arranged on the rack 1, a resisting screw 44 locked in the threaded seat 43 for resisting the demolding plate 42 support block 40, a positioning rod 45 arranged on the demolding plate 42 support block 40, and a third tension spring 46 connected to one end of the movable die seat 2 and connected to one end of the positioning rod 45.

[0067] In order to improve the stability of the movement of the demolding plate 42, the demolding plate 42 is further provided with a guide hole (not shown in the figure), the fixed die seat 3 is further provided with a first avoiding passage (not shown in the figure), and the movable die seat 2 is provided with a guide column 47 passing through the guide hole and the avoiding hole in sequence.

[0068] In order to make it possible to eject the pipe remaining in the fixed die, the first fixed die 4 and the second fixed die 7 are respectively provided with a first demolding hole 48 and a second demolding hole 49, the guide column 47 located on one end passing out of the fixed die seat 3 is further provided with a mounting plate 50, the mounting plate 50 is provided with a demolding rod 51 for inserting into the demolding hole to push out the pipe attached to the fixed die, and the fixed die seat 3 is further provided with a second avoiding passage (not shown in the figure) for avoiding the demolding rod 51.

[0069] In order to facilitate the discharge of the pipe, the bottom of the rack 1 is further provided with a discharge port 52 for discharging the pipe.

[0070] Working principle: first cut the long pipe into the appropriate length, then into the first vibration disc 12, start the first vibration disc 12 and stamping device, at this time the pipe from the first vibration disc 12 moves to the receiving port 22, at the same time the first cam 23 and the first swing plate 24 are disengaged, so that the first swing plate 24 resets under the action of the first tension spring 29, thereby driving the feeding slider 21 to move upwards, at this time the smaller end of the second cam 37 is engaged with the second swing plate to drive the second transmission rod to move, so that the rotating rod 32 rotates, the control block 35 clamps the pipe in the receiving port 22, and then resets, finally when the moving die seat 2 approaches the fixed die seat 3, the larger end of the second cam 37 is engaged with the second swing plate, so that the control block 35 moves the pipe to the front of the fixed die, at the same time the moving die is inserted into the pipe to push it to the fixed die, at this time the second cam 37 is disengaged from the second swing plate, the feeding manipulator resets quickly, and the first stamping of the pipe is completed, which is stamped into a conical pipe, then the moving die seat 2 retreats to drive the conical pipe to leave the fixed die, the stripper support block 40 is resisted by the resistance screw 44 during the retreat process, so as to be fixed, and then the pipe is ejected and falls into the discharge port 52, when the moving die seat 2 moves forward, the third tension spring 46 will tighten the stripper support block 40 to reset the stripper plate 42, and the above steps are repeated.

[0071] Finally, the pipe after the first stamping is put into the second vibration disc 14 of the stamping device installed with the second die, and because the conveying guide rail is matched with the shape of the pipe, only when the pipe after the first stamping is in a specific direction can it enter the conveying guide rail, then the steps of the first stamping can be repeated to stamp a ring table in the conical pipe.

[0072] The basic principles and main features of the present application and its advantages are shown and described above, and those skilled in the art should understand that the present application is not limited to the above embodiments, the above embodiments and descriptions are only to illustrate the principles of the present application, and various changes and improvements can be made without departing from the spirit and scope of the present application, which fall within the scope of the present application, the scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A process for manufacturing a shower fitting threaded tube, characterized in that: It comprises the following steps: S1 cutting the round pipe into a proper length; S2 placing the round pipe into the first stamping device with the first die installed, and performing the first stamping to stamp the round pipe into a conical pipe, and then demolding; S3 placing the conical pipe into the second stamping device with the second die installed, and performing the second stamping to punch out a ring table inside the conical pipe, and then demolding; S4 fixing the conical pipe with the ring table punched out on a lathe to process threads; S5 performing surface treatment on the conical pipe with the threads processed, and the production of the shower connector is completed; The first stamping device comprises a first frame, a first movable die seat arranged on the first frame through a first sliding device and capable of sliding forward and backward, a first power device arranged on the first frame and used to drive the first movable die seat to slide forward and backward, and a first fixed die seat arranged on the first frame and used to cooperate with the first movable die seat, and a first die is arranged between the first movable die seat and the first fixed die seat; The second stamping device comprises a second frame, a second movable die seat arranged on the second frame through a second sliding device and capable of sliding forward and backward, a second power device arranged on the second frame and used to drive the second movable die seat to slide forward and backward, and a second fixed die seat arranged on the second frame and used to cooperate with the second movable die seat, and a second die is arranged between the second movable die seat and the second fixed die seat; The first die comprises a first fixed die arranged on the first fixed die seat, a first conical hole with a certain taper and matching the size of the round pipe arranged on the first fixed die, and a first movable die arranged on the first movable die seat and matching the taper of the first conical hole and used to stamp the round pipe into a conical pipe; The second die comprises a second fixed die arranged on the second fixed die seat, a second conical hole arranged on the second fixed die and matching the conical pipe and used to position the conical pipe, and a second movable die arranged on the second movable die seat and matching the taper of the second conical hole, and a ring groove for punching out a ring table inside the conical pipe is arranged at the front end of the second movable die.

2. A process for manufacturing a shower fitting threaded tube according to claim 1, characterized in that: The first sliding device comprises a first movable die sliding groove arranged on the first frame and matched with the first sliding block arranged on the first movable die seat; The second sliding device comprises a second movable die sliding groove arranged on the second frame and matched with the second sliding block arranged on the second movable die seat.

3. A process for manufacturing a shower fitting threaded tube according to claim 1, characterized in that: The first power device comprises a first crankshaft rotatably arranged on the first frame, a first connecting rod rotatably connected to one end of the first crankshaft and connected to the first movable die seat through universal transmission, a first main gear connected to the first crankshaft and arranged on the first frame, and a first servo motor arranged on the first frame, wherein a rotating rod of the first servo motor is connected with a first secondary gear and the first secondary gear is engaged with the first main gear; The second power device comprises a second crankshaft rotatably arranged on the second rack, a second connecting rod with one end rotatably connected to the second crankshaft and the other end connected to the second fixed die seat, a second main gear arranged on the second rack and connected to the second crankshaft, and a second servo motor arranged on the second rack, the rotating rod of the second servo motor being connected with a second secondary gear which is engaged with the second main gear.

4. A process for manufacturing a shower fitting threaded tube according to claim 3, characterized in that: The first rack is further provided with a feeding device for feeding the round pipe into the first die and the conical pipe into the second die.

5. A process for manufacturing a shower fitting threaded tube according to claim 4, characterized in that: The feeding device comprises a conveying device arranged on the first rack for storing and conveying the round pipe or the conical pipe, a feeding device arranged on the first rack for receiving the round pipe or the conical pipe sliding out of the conveying device, and a feeding manipulator arranged on the first rack for clamping the pipe from the feeding device and then feeding it into the fixed die.

6. A process for manufacturing a shower fitting threaded tube according to claim 5, characterized in that: The conveying device comprises a first vibrating disc arranged on the first rack for placing the round pipe, and a first conveying guide connected to the first vibrating disc for conveying the round pipe to the periphery of the first fixed die seat and matching the shape of the pipe to avoid conveying errors.

7. A process for manufacturing a shower fitting threaded tube according to claim 5, characterized in that: The conveying device comprises a second vibrating disc arranged on the first rack for placing the conical pipe, a second conveying guide connected to the second vibrating disc for conveying the conical pipe to the periphery of the first fixed die seat and matching the shape of the pipe to avoid conveying errors, and a screening device arranged on the second vibrating disc.

8. A process for manufacturing a shower fitting threaded tube according to claim 7, characterized in that: The screening device comprises a spiral track arranged on the second vibrating disc, an inner slot formed in the inner side of the spiral track, a screening rod arranged on the spiral track at the inner slot and extending upwardly from the bottom for tilting the incorrect conical pipe, and an outer slot formed on the spiral track for allowing the tilted conical pipe to fall into the second vibrating disc.

9. A process for manufacturing a shower fitting threaded tube according to claim 5, characterized in that: The feeding device comprises a fixed seat arranged on the first rack, a feeding slider slidably arranged on the fixed seat, a receiving port formed on the feeding slider and angled towards the outlet end of the conveying guide, and a first driving device arranged between the first rack and the fixed seat for driving the feeding slider to move.

10. A process for manufacturing a shower fitting threaded tube according to claim 9, characterized in that: The first driving device comprises a first cam arranged on the first rack and connected to the first crankshaft for following the rotation of the first crankshaft, a first swing plate swingingly arranged on the first rack for cooperating with the cam, a first fixed rod arranged on the first rack, an L-shaped rod hingedly connected to the fixed seat, a transmission protrusion arranged on the feeding slider, a strip-shaped hole formed on the L-shaped rod for cooperating with the transmission protrusion, a first tension spring arranged between the first swing plate and the first fixed rod, and a first transmission rod hingedly arranged between the other end of the L-shaped rod and the first swing plate.

11. A process for manufacturing a shower fitting threaded tube according to claim 5, characterized in that: The feeding manipulator comprises a fixed block arranged on the first rack, a rotating rod rotatably arranged in the fixed block, a height increasing rod arranged on the rotating rod close to one end of the first fixed die seat, an extending rod arranged on the height increasing rod for extending above the die, a grabbing block arranged on the extending rod, a clamping opening with a size matched with the pipe for clamping the pipe being arranged on the grabbing block, and a second driving device arranged on the side of the rotating rod away from the first fixed die seat for driving the rotating rod to rotate.

12. A process for manufacturing a shower fitting threaded tube according to claim 11, characterized in that: The second driving device comprises a second cam arranged on the first rack and connected with the first crank shaft for following the first crank shaft to rotate, a second swing plate swingingly arranged on the first rack for cooperating with the second cam, a second fixed rod arranged on the first rack, a connecting column arranged on the rotating rod, a second tension spring arranged between the second swing plate and the second fixed rod, and a second transmission rod hingedly arranged between the connecting column and the second swing plate. The second cam is provided with protrusions with inconsistent sizes for making the swing amplitude of the second swing plate inconsistent so that the grabbing block can be rotated once with a small amplitude to clamp the pipe and then rotated once with a large amplitude to put the pipe into the fixed die.

13. A process for manufacturing a shower fitting threaded tube according to claim 1, characterized in that: The first rack is further provided with a demolding device facilitating the demolding and sliding of the die completed by stamping.

14. A process for manufacturing a shower fitting threaded tube according to claim 13, characterized in that: The demolding device comprises demolding plate sliding grooves respectively arranged on the left and right sides of the movable die, a demolding plate support block slidably arranged in the demolding plate sliding grooves, a demolding plate support rod arranged on the demolding plate support block, a demolding plate arranged on the demolding plate support rod, a demolding opening arranged on the demolding plate for the movable die to pass out, and a positioning device arranged on the first rack for controlling the demolding plate to stop moving and reset.

15. A process for manufacturing a shower fitting threaded tube according to claim 14, characterized in that: The positioning device comprises a threaded seat arranged on the first rack, a resisting screw arranged in the threaded seat for resisting the demolding plate support block, a positioning rod arranged on the demolding plate support block, and a third tension spring having one end connected to the first movable die seat and the other end connected to the positioning rod.

16. A process for manufacturing a shower fitting threaded tube according to claim 14, characterized in that: The demolding plate is further provided with a guide hole, the first fixed die seat is further provided with a first avoiding passage, and the first movable die seat is provided with a guide column sequentially passing through the guide hole and the avoiding hole.

17. A process for manufacturing a shower fitting threaded tube according to claim 16, characterized in that: The first fixed die and the second fixed die are respectively provided with a first demolding hole and a second demolding hole, the guide column arranged on the end passing out of the first fixed die seat is further provided with a mounting plate, the mounting plate is provided with a demolding rod for being inserted into the demolding hole to push out the pipe attached to the fixed die, and the first fixed die seat is further provided with a second avoiding passage for avoiding the demolding rod.

18. A process for manufacturing a shower fitting threaded tube according to claim 1, characterized in that: The first rack is further provided with an exhaust port for the pipe to exhaust.

Images