CN206622498U - A kind of tap body building mortion - Google Patents

Abstract

A faucet pipe body forming device, including a hydraulic pressure generating system, a hydraulic bulging press, and an internal high-pressure forming die. The internal high-pressure forming die includes an upper die and a lower die. Die holes, including short and long end round die holes and vertically arranged manifold circular grooves, long and short end round die holes are installed with left and right push heads for tight sealing, the oil inlet channel of the right push head is connected with the high-pressure oil circuit, and the manifold is round A back pressure piston is installed in the die hole, and the left and right push heads and the back pressure piston are respectively connected with the left and right oil cylinders and the back pressure oil cylinder of the hydraulic bulging press. The method for manufacturing the faucet body includes the steps of: S1 using the internal high pressure forming technology to manufacture the semi-finished faucet body, S2. using the conventional bending process to form the finished faucet body. The design of the device is scientific, and the method of using the forming device to manufacture the complex-shaped faucet body takes full advantage of the advantages of the internal high-pressure forming technology and the conventional pipe bending process, which can make the manifold end accurately formed and the quality of the formed pipe body is good.

Description

A faucet pipe body forming device

technical field

The utility model belongs to the technical field of mechanical processing, and relates to a pipe material processing device, in particular to a faucet pipe body forming device.

Background technique

The faucet is one of the bathroom hardware products. Its characteristics are dense organization and compact structure, and asymmetry. It is generally a three-way pipe with a curved end. The straight end is the main water pipe connection port, the curved end is the water outlet, and the waist is the switch. Installation port (manifold port); due to the above characteristics, it brings a lot of trouble to the production (difficult to form).

The traditional faucet (product blank) mainly adopts the casting process. Firstly, the mold and process are designed according to the product drawing, then the mold is processed and manufactured, and finally the mold is tested and the equipment parameters are constantly adjusted to verify the rationality of the casting process; the disadvantage of this technology is :

1. Due to the dense structure and compact structure of the faucet, it is required that the casting structure, pouring system and process parameters be set very reasonably, otherwise various casting defects will occur in actual production, which will affect the quality of the formed product (two-thirds of the defects in the faucet product manufacturing process are produced by the first process "casting");

2. In the casting process, the casting mold filling time is long, the heat transfer speed of the metal mold is fast, and a large amount of energy is lost during the filling process, resulting in high energy consumption;

3. Due to the difficulty in forming the faucet, the traditional manufacturing process involves many factors affecting the forming, and there may be mutual coupling between the multiple factors, so it is often necessary to go through multiple test molds and continuously adjust the equipment parameters to verify the rationality of the casting process. However, if the qualified rate of the trial-manufactured product is too low, it is necessary to modify the process plan and the mold, and then proceed to the next test mold until the qualified rate of the product is guaranteed. Not only the construction period is long, but also the cost is high.

Utility model content

The purpose of this utility model is to provide a faucet pipe body forming device and a method for forming a faucet pipe body with it, so as to overcome the above-mentioned deficiencies in the prior art.

The technical scheme adopted by the utility model is: a faucet pipe body forming device, including a hydraulic pressure generating system, a hydraulic bulging press and an internal high-pressure forming die, and the hydraulic bulging press includes a workbench, a hydraulic cylinder, and a left push head , left oil cylinder, right push head, right oil cylinder, back pressure piston and back pressure oil cylinder; the internal high pressure forming mold includes an upper mold and a lower mold, and the inner surface of the upper mold has an asymmetrical "T" shaped upper concave circular groove , the upper concave circular groove includes an upper concave circular groove on a short end and an upper concave circular groove on a long end, the upper concave circular groove on the short end extends from the left side of the upper die, the upper concave circular groove on the long end extends from the right side of the upper die, and the long end The upper concave circular groove is coaxial with the upper concave circular groove at the short end, and the vertical circular groove at the intersection is the upper manifold circular groove corresponding to the installation end of the faucet switch. The radius is consistent with the radius of the faucet blank tube, and the inner surface of the upper mold on both symmetrical sides of the upper concave circular groove is provided with positioning pin holes;

The inner surface of the lower mold opposite to the upper mold is provided with an asymmetric "T"-shaped concave circular groove corresponding to the upper concave circular groove, including a short-end concave circular groove and a long-end concave circular groove, and a short-end concave circular groove. The circular groove extends out from the left side of the lower die, the long end of the concave circular groove extends out of the right side of the lower die, the long end of the concave circular groove is coaxial with the short end of the concave circular groove, and the vertically arranged circular groove at the intersection is the corresponding faucet switch The lower manifold circular groove at the installation end, the lower manifold circular groove extends out of the back side of the lower mold, the radius of the concave circular groove is consistent with the radius of the faucet blank tube, and the inner surface of the lower mold on both symmetrical sides of the concave circular groove is provided with positioning The positioning pin corresponding to the pin hole; there are mounting screw holes around the upper and lower molds for connecting with the hydraulic bulging press;

The lower die is installed on the workbench of the hydraulic bulging press and fixed by bolts. The upper die is installed on the upper part of the lower die and connected with the hydraulic cylinder of the hydraulic bulging press. After the upper and lower dies are closed, the upper concave The circular groove and the downward concave circular groove constitute the circular die hole, the short-end upward concave circular groove and the short-end downward concave circular groove constitute the short-end circular die hole, and the long-end upward concave circular groove and the long-end downward concave circular groove constitute the long-end circular die The upper manifold circular groove and the lower manifold circular groove form the manifold circular die hole; the left end of the faucet blank tube installed in the long end circular die hole and the short end circular die hole is tightly sealed by the left push head, and the right end is passed through The right push head is tightly sealed, the oil inlet channel of the right push head is connected with the high-pressure oil circuit of the hydraulic pressure generation system, and the back pressure piston of the hydraulic bulging press is installed in the round die hole extending out of the manifold on the back side of the upper and lower dies. The pushing head is connected with the left cylinder of the hydraulic bulging press, the right pushing head is connected with the right cylinder of the hydraulic bulging press, and the back pressure piston is connected with the back pressure cylinder of the hydraulic bulging press.

Its further technical solution is: the left push head includes a left connector and a left push rod, the center of the left push rod is provided with an exhaust hole, the left connector is provided with an exhaust port communicating with the exhaust hole, and the right The push head includes a right connector and a right push rod. The center of the right push rod is provided with an oil inlet hole, and the right connector is provided with an oil inlet connected with the oil inlet hole. A sealing ring is arranged between the holes, and a sealing ring is arranged between the outer periphery of the right push rod and the hole of the long-end round die.

Due to the adoption of the above technical solution, a faucet pipe body forming device of the utility model has the following beneficial effects:

1. A faucet pipe body forming device of the utility model includes an asymmetric three-way pipe internal high-pressure forming die which is different from conventional symmetrical three-way pipes (T-shaped pipes), and its axial feeding and supplementary materials are provided by pushers at both ends. The internal pressure of the tube blank is provided by one of the two ends, and the tee manifold end needs to have a back pressure (to prevent the free expansion of the material at the manifold end), and the back pressure is provided by the back pressure piston. When feeding in the axial direction, according to The characteristics of asymmetric tee pipe and metal fluidity, close to the manifold end, the friction of the tube blank is small, it is easy to push the tube blank material into the manifold, the effect of feeding and replenishing is obvious, and the effect of far away from the manifold end is just right On the contrary, during operation, a larger axial feed (one-third larger) is set near the end of the tee manifold than the end farther away from the manifold, so that sufficient axial feed can be ensured and the manifold end can be precisely formed;

2. This faucet body forming device aims at the complexity of conventional forming of faucets, and it is difficult to form ideal formed parts. First, the device is used to form the switch installation port (tee manifold) of the faucet through internal high pressure forming technology, and then The outlet end of the faucet is bent and formed by the conventional bending process to realize the precise forming of the pipe body of this type of faucet. The forming strength and rigidity are good, the number of molds is small, and the cost is low. it is good.

The technical features of a faucet pipe body forming device of the utility model will be further described below in conjunction with the accompanying drawings and embodiments.

Description of drawings

Figures 1 to 2 are schematic diagrams of a faucet pipe body forming device of the present invention:

Fig. 1 is the main view, and Fig. 2 is the A-A sectional view of Fig. 1 (there is a semi-finished faucet body in the concave circular groove);

Figures 3 to 5 are schematic diagrams of internal high pressure molds:

Fig. 3 is a schematic diagram of the surface structure under the upper mold, Fig. 4 is a left view of Fig. 3, Fig. 5 is a schematic diagram of the upper surface structure of the lower mold, Fig. 6 is a left view of Fig. 5,

Figures 7 to 11 are schematic diagrams of the clamping state of the upper and lower molds:

Fig. 7 is a front view, Fig. 8 is a left view of Fig. 7, Fig. 9 is a rear view of Fig. 7, Fig. 10 is a three-dimensional rendering, and Fig. 11 is a perspective view of Fig. 10;

Fig. 12 is a schematic diagram of a straight pipe blank for a faucet;

Fig. 13 is a schematic diagram of a semi-finished product of a faucet body (a semi-finished product with a manifold);

Figure 14 is a finished product of the faucet body;

In the picture:

1—hydraulic cylinder, 2—upper die, 21—short end upper concave circular groove, 22—long end upper concave circular groove, 23—upper manifold circular groove, 24—location pin hole, 3—right push head, 31— Oil inlet channel, 4—lower mold, 41—short end concave circular groove, 42—long end concave circular groove, 43—lower manifold circular groove, 44—locating pin, 5—worktable, 6—left push head , 61—exhaust hole, 7—back pressure piston, 8—hydraulic pressure generation system, 9—straight tube, 10—semi-finished faucet body, 101—water inlet end, 102—water outlet end, 103—switch installation end ( manifold), 11—faucet body finished product, 12—right oil cylinder, 13—left oil cylinder, 14—back pressure oil cylinder.

detailed description

A faucet pipe body forming device, comprising a hydraulic pressure generation system 8, a hydraulic bulging press and an internal high-pressure forming die, the hydraulic bulging press includes a workbench 5, a hydraulic cylinder 1, a left push head 6, a left oil cylinder 13, Right push head 3, right oil cylinder 12, back pressure piston 7 and back pressure oil cylinder 14; the internal high pressure forming mold includes an upper die 2 and a lower die 4, and the inner surface of the upper die is provided with an asymmetrical "T" shaped upper concave The circular groove, the upper concave circular groove includes the short end concave circular groove 21 and the long end concave circular groove 22, the short end concave circular groove extends from the left side of the upper die, and the long end upper concave circular groove extends from the upper die right On the side, the upper concave circular groove at the long end is coaxial with the upper concave circular groove at the short end, and the vertical circular groove at the intersection is the upper manifold circular groove 23 corresponding to the installation end of the faucet switch, and the upper manifold circular groove extends out of the back side of the upper die , the radius of the upper concave circular groove is consistent with the radius of the faucet blank tube, and the inner surface of the upper mold on both symmetrical sides of the upper concave circular groove is provided with positioning pin holes 24;

The inner surface of the lower mold opposite to the upper mold is provided with an asymmetric "T" shaped concave circular groove corresponding to the upper concave circular groove, including a short-end concave circular groove 41 and a long-end concave circular groove 42. The concave circular groove extends out of the left side of the lower die, and the long end of the concave circular groove extends out of the right side of the lower die.

The concave circular groove at the long end is coaxial with the concave circular groove at the short end. The circular groove vertically arranged at the intersection is the lower manifold circular groove 43 corresponding to the installation end of the faucet switch. The lower manifold circular groove extends out of the back side of the lower mold. The radius of the concave circular groove is consistent with the radius of the faucet blank tube. The inner surface of the lower mold on the symmetrical sides of the concave circular groove is provided with a positioning pin 44 corresponding to the positioning pin hole 24. Mounting screw holes for press connection;

The lower mold is installed on the workbench 5 of the hydraulic bulging press and fixed by bolts, and the upper mold is installed on the upper part of the lower mold and connected with the hydraulic cylinder 1 of the hydraulic bulging press. After the upper and lower molds are closed, The positioning pin hole 24 is positioned with the positioning pin hole 12. The upper concave circular groove and the lower concave circular groove form a round die hole. The upper concave circular groove 22 and the long-end lower concave circular groove 42 constitute the long-end circular die hole, the upper manifold circular groove 23 and the lower manifold circular groove 43 constitute the manifold circular die hole; the short-end circular die hole is installed with a left push Head 6, the right push head 3 is installed in the long end round die hole, the back pressure piston 7 is installed in the manifold round die hole, the left push head 6 is connected with the left oil cylinder 13 of the hydraulic bulging press, the right push head 3 is connected with the hydraulic bulging press The right cylinder 12 of the machine is connected, and the back pressure piston 7 is connected with the back pressure cylinder 14 of the hydraulic bulging press.

The left end of the faucet straight tube blank tube 9 installed in the long-end round die hole and the short-end round die hole is tightly sealed by the left push head 6, and the right end is tightly sealed by the right push head 3, and the oil inlet channel of the right push head 3 31 communicates with the high-pressure oil circuit of the hydraulic pressure generating system 8 .

The left push head 6 includes a left connector and a left push rod, the center of the left push rod has an exhaust hole 61, and the left connector is provided with an exhaust port communicating with the exhaust hole 61, and the right push head 3 includes The right connector and the right push rod, the center of the right push rod is provided with an oil inlet 31, the right connector is provided with an oil inlet communicating with the oil inlet 31, the outer circumference of the left push rod is connected to the short-end round die hole A sealing ring is arranged between them, and a sealing ring is arranged between the outer periphery of the right push rod and the hole of the long-end circular die.

A method for manufacturing a faucet body using a faucet body forming device according to one of the above embodiments includes the following steps:

S1. Using internal high pressure forming to manufacture the semi-finished faucet body

S11. Install the internal high pressure forming mold: install the lower mold of the internal high pressure forming mold on the workbench of the hydraulic bulging press, and install the upper mold above the lower mold and connect it with the hydraulic cylinder;

S12. Install the faucet blank tube: place the straight tube blank tube 9 in the lower mold of the internal high pressure forming mold, place the water inlet end to be processed in the short-end round die hole, and the water outlet end in the long-end round die hole, push the head left 6 is installed in the round die hole at the short end, and the right push head 3 is installed in the round die hole at the long end, the left push head is connected with the left cylinder 13 of the hydraulic bulging press, and the right push head is connected with the right cylinder 12 of the hydraulic bulging press , the back pressure piston 7 is connected with the back pressure cylinder 14 of the hydraulic bulging press;

S13. Clamp the mold and connect the hydraulic oil circuit: start the hydraulic cylinder to close the upper mold, start the left and right cylinders to push the left and right push heads to block and seal the ports at both ends of the straight tube, and connect the hydraulic pressure generation system 8 with a liquid pipe. The oil circuit at the high-pressure liquid delivery end is connected with the oil inlet channel of the right push head and sealed well, and the back pressure cylinder is activated to push the back pressure piston 7 and get close to the straight tube;

S14. Exhaust and fill liquid: start the high-pressure oil pump of the hydraulic pressure generation system to remove the air in the straight tube, seal the exhaust port of the left pusher, and continue to fill the straight tube with oil;

S15. Pressure bulging: Apply high pressure to the oil in the straight tube to make the tube bulge toward the manifold hole, and control the left and right push heads to push the material through the left and right cylinders, and at the same time slowly exit the back The pressure piston, by controlling the depth of back pressure piston withdrawal, realizes the control of the bulging size to form a manifold of the required size, and maintains the pressure after reaching the set size position;

S16. Pressure release and mold opening: release the pressure in the internal high pressure forming mold, pump back the oil, open the mold and take out the faucet asymmetric tee pipe with manifold—the semi-finished product of the faucet body;

S2. Formed faucet body finished product

S21. Bending the long end of the faucet body obtained in step S1 into a desired arc by using a conventional pipe bending process;

S22. Cut the sealing surface of the manifold end to obtain the faucet switch installation opening, complete the whole process of forming the faucet body, and obtain the finished faucet body.

In the above step S14, through the control of the left and right oil cylinders to control the left and right pushers to advance the replenishment, it is to control the left and right cylinders to make the left and right pushers advance the replenishment to both ends of the straight billet tube according to different axial feeds. , the axial feed amount of the left push head end close to the manifold is greater than the axial feed amount of the right push head end far away from the manifold, so as to ensure sufficient axial feed and replenishment, so that the manifold end can be precisely formed. {Note: The feed control of the left and right push heads is realized by controlling the control settings of the control console of the external hydroforming equipment. The specific control volume is mainly determined according to the size of the tube blank and the height of the manifold end. The end (left pusher) feed is 1/3 more than the end away from the manifold (right pusher). }

The conventional pipe bending process described in step S21 above refers to the process of stretch bending, press bending, winding or roll bending.

Glossary

Straight tube blank: refers to the metal tube blank used to manufacture the finished faucet body, with the same inner diameter as the faucet body and corresponding length;

Faucet body semi-finished product: refers to the faucet body in which the waist of the straight billet tube manufactured by internal high pressure forming forms a manifold (faucet switch installation port);

The finished product of the faucet body: refers to the completion of the required arc on the outlet end of the semi-finished product of the faucet body to form a faucet body with a water outlet end, a water inlet end, and a faucet switch installation port, but no faucet switch is installed.

Claims (2)

1. A kind of 1. tap body building mortion, it is characterised in that：Including hydraulic pressure generation system（8）, hydraulic expanding-forming press and interior High-pressure forming mold, the hydraulic expanding-forming press include workbench（5）, hydraulic cylinder（1）, a left side cuts somebody's hair（6）, left oil cylinder（13）, it is right Cut somebody's hair（3）, right oil cylinder（12）, back pressure piston（7）With back pressure oil cylinder（14）；The internal high pressure forming mould includes upper mould（2）With Lower mould（4）, the upper mould inner surface is provided with asymmetric "T"-shaped fovea superior circular groove, and the fovea superior circular groove includes short end fovea superior circular groove （21）With long end fovea superior circular groove（22）, short end fovea superior circular groove extends on the left of upper mould, and long end fovea superior circular groove extends on the right side of upper mould, Long end fovea superior circular groove and short end fovea superior circular groove are coaxial, and the vertically disposed circular groove of its intersection is corresponding water tap installation end Upper manifold circular groove（23）, upper manifold circular groove extends upper mould dorsal part, and fovea superior circular groove radius is consistent with the radius of tap base pipe, on The upper mould inner surface of the recessed symmetrical both sides of circular groove is provided with dowel hole（24）；

   The lower mould inner surface relative with upper mould is provided with asymmetric "T"-shaped recessed circular groove corresponding with fovea superior circular groove, including short Hold recessed circular groove（41）With the recessed circular groove in long end（42）, the recessed circular groove of short end extends on the left of lower mould, the long recessed circular groove extension in end Go out on the right side of lower mould, the long recessed circular groove in end and the recessed circular groove of short end are coaxial, and the vertically disposed circular groove of its intersection is corresponding tap Switch the lower manifold circular groove of installation end（43）, lower manifold circular groove extends lower mould dorsal part, recessed circular groove radius and tap base pipe Radius it is consistent, the lower mould inner surface of the recessed symmetrical both sides of circular groove is provided with and dowel hole（24）Corresponding alignment pin（44）, Upper and lower mould periphery is provided with the installation screw for being used for being connected with hydraulic expanding-forming press；

   The lower mould is arranged on the workbench of hydraulic expanding-forming press（5）And fixation is bolted, the upper mould is arranged on down Mould top and with the hydraulic cylinder of hydraulic expanding-forming press（1）Connect, after upper and lower mould matched moulds, fovea superior circular groove is formed with recessed circular groove to be justified Nib, short end fovea superior circular groove form short end circle nib with the recessed circular groove of short end, and long fovea superior circular groove is formed with the recessed circular groove in long end to be grown End circle nib, upper manifold circular groove form manifold circle nib with lower manifold circular groove；Long end circle nib and short end circle are arranged on during work Tap base pipe left end in nib is cut somebody's hair by a left side（6）Top tight sealing, right-hand member are cut somebody's hair by the right side（3）Top tight sealing, the right side are cut somebody's hair （3）Oil-feed duct（31）With hydraulic pressure generation system（8）High-pressure oil passage connection, extend upper and lower mould dorsal part manifold circle nib The back pressure piston of interior installation hydraulic expanding-forming press（7）, the left side is cut somebody's hair（6）With the left oil cylinder of hydraulic expanding-forming press（13）Connection, Cut somebody's hair on the right side（3）With the right oil cylinder of hydraulic expanding-forming press（12）Connection, back pressure piston（7）With the back pressure oil of hydraulic expanding-forming press Cylinder（14）Connection.
2. A kind of 2. tap body building mortion as claimed in claim 1, it is characterised in that：Cut somebody's hair on the left side（6）Including a left side Connector and left push rod, left push rod center are provided with vent（61）, left connector is provided with and vent（61）Communicate Exhaust outlet, the right side are cut somebody's hair（3）Including right connector and right push rod, the right push rod center is provided with oil-feed duct（31）, right company Joint is provided with and oil-feed duct（31）The oil inlet communicated, sealing is provided between the left push rod periphery and short end circle nib Circle, sealing ring is provided between right push rod periphery and long end circle nib.