CN212703834U

CN212703834U - Flattening die for stainless steel water heating bent pin

Info

Publication number: CN212703834U
Application number: CN202021452154.1U
Authority: CN
Inventors: 蔡丰良
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-22
Filing date: 2020-07-22
Publication date: 2021-03-16
Anticipated expiration: 2030-07-22

Abstract

The utility model provides a flattening die for stainless steel water heating curved feet, which comprises an upper die plate and a lower die plate, and is characterized in that the upper die plate and the lower die plate are provided with corresponding upper dies and lower dies, the upper dies and the lower dies are combined to form a contour cavity matched with the curved feet, two ends of the contour cavity are connected and provided with core pulling holes, each core pulling hole is correspondingly provided with a core rod capable of axially moving, the upper dies and the lower dies are provided with press grooves in the middle section of the contour cavity, and the flattening die also comprises a pressing block which vertically moves along the press grooves relative to the upper dies and the lower dies and is used for flattening the curved feet; the utility model discloses a flatten mould and be used for the production process flow of the bent foot of stainless steel, for the bent foot of current cast iron, this flatten the mould and can conveniently be suitable for going on of the bent foot production of stainless steel, be fit for as the flattening forming die of its technology link.

Description

Flattening die for stainless steel water heating bent pin

Technical Field

The utility model relates to a mechanical die technical field especially involves a flattening mould of warm curved foot of stainless steel water.

Background

The press forming is a processing and forming method for obtaining a workpiece with a required shape or size by applying an external force to a plate, a strip, a pipe, a section and the like by a press machine and a die to cause plastic deformation or separation. The main steps of stamping are hot rolling and cold rolling, 60-70% of all the world steels are plates, and most of the plates are made into finished products through stamping. The stamping die is a special process device for processing materials into parts in cold stamping processing, and becomes the cold stamping die.

At present, bathroom products are increasing day by day, and the foot that curves is as tap's main accessory, and its quality problem directly influences tap's whole life-span, and the foot that curves plays the effect between connecting tube and the tap, bears the weight of whole set of tap under normal installation, and through long-time expend with heat and contract with cold, with alkaline material outstanding and material oxidation, causes the life-span of the foot that curves to shorten to influence whole tap life-span. The casting process of the existing curved foot comprises the following steps: the method comprises the steps of profiling manufacturing, wax mold pressing, wax mold assembling, paint dipping, sand spreading, repeated hardening and drying, dewaxing, modeling, roasting, burning, sand shakeout and cleaning, is limited in absolute sound of the process, and the finished product of the bent foot has defects of pits, depressions, sand inclusion and the like on the surface, influences the appearance of the product and reduces the performance and yield of the product. The production process has higher requirements on a production method, relatively difficult casting, serious pollution, low productivity, very serious energy consumption and unstable quality, and the incomplete sealing performance of the thread defects is often seriously influenced when the threads at the two ends of the curved foot are finally manufactured.

The Chinese patent application No. 201210538622.0 entitled "extrusion moulding method of curved foot joint" discloses an extrusion moulding method of curved foot joint, which utilizes stainless steel tube to process it to obtain final stainless steel curved foot, compared with the existing cast iron curved foot, the production flow of the method is more in line with the way of scientific development, and the method is more in line with the benefit of the relative production method; at present, a plurality of manufacturers adopt similar methods to manufacture stainless steel bent feet, but bending of a stainless steel pipe is one of the problems which restrict the process of manufacturing the bent feet by the stainless steel pipe, a plurality of dies are required to mold the bent feet in the production process, but the quality is often not guaranteed, and the bent feet are very easy to be influenced, so that the defective rate is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art and provides a die special for the flattening and forming process in the production process link of the stainless steel hot-water heating curved feet.

Based on above-mentioned purpose, the utility model discloses a flattening die of warm foot of stainless steel water, including cope match-plate pattern and lower bolster, its characterized in that: the upper template and the lower template are provided with an upper die and a lower die which are matched with each other, the upper die and the lower die are respectively provided with an upper pipe groove and a lower pipe groove, when the upper die and the lower die are closed, a space surrounded by the upper pipe groove and the lower pipe groove forms a contour cavity with a curved foot to be processed, two ends of the contour cavity are respectively provided with a core pulling hole on the outer side wall of the upper die and the outer side wall of the lower die, the core pulling holes are correspondingly provided with core rods, and the corresponding core rods at two ends of the contour cavity can form an inner hole shape which is the same as the shape of the flattened curved foot after the die is closed;

the upper die and the lower die are respectively provided with a pressure groove which is opposite to the outline cavity, the pressure grooves are respectively provided with a movable pressing block relative to the upper die, the lower die, and one end of the pressing block is fixedly connected to the upper template and the lower template and is driven by the upper template, the lower template and the pressure for applying a pressure for flattening the curved feet to the tube blank to be processed;

the device is characterized by further comprising an ejector block which is located on the side face of the pressing block and can move relative to the pressing block and an oil cylinder which is used for driving the ejector block to move and is fixedly arranged relative to the upper template and the lower template, wherein two ends of the ejector block respectively support against the upper template and the lower template and an upper die and a lower die and are used for limiting the movement of the pressing block.

As a further arrangement of the above scheme, the material of the curved foot is 304 stainless steel or 201 stainless steel material.

As a further arrangement of the scheme, the upper template and the lower template are fixed on a press, the press is preferably a hydraulic press, and the pressure of the press is preferably between 100 and 120 tons.

According to the scheme, the pressing blocks are used for flattening the middle section part of the curved leg, and the pressing blocks corresponding to the upper part and the lower part of the pressing blocks are driven by the press machine to simultaneously move towards the middle along the pressing groove after the die is closed and the core rod is in place.

As a further arrangement of the scheme, a plurality of contour cavities can be arranged according to requirements, and the pressure of the hydraulic machine can be adjusted according to the number of the contour cavities.

As a further arrangement of the scheme, a step is arranged between the contour cavity of the curved pin and the core-pulling hole, and the step is used for positioning when the curved pin is used for discharging.

As a further arrangement of the above scheme, the size of the coring hole is equal to the diameter of the inner hole of the curved leg on one side.

In a further arrangement of the above scheme, the front end parts of the mandrels at the two ends of the contour cavity are provided with taper surfaces, and the front end taper surfaces of the two mandrels are arranged in a close fit manner after being butted.

The utility model discloses for the beneficial effect that has now: the mould of the utility model ensures the final state and the deformation of the product to be controllable through multi-section action, especially the strong pressure application of the processed product is provided with the shaping core rod, the mould of the utility model has compact structural design, and as a practical mould for batch production, the stress and the ingenious structural design of the rigorous work flow which can move step by step make the production process not easy to float easily by other influence factors of the state change of mechanical equipment, and the produced product has high stability and strong consistency; the utility model provides a flattening die of warm curved foot production technology of stainless steel water is exclusively used in, for current curved foot production technology of cast iron, it has avoided the harm that the high temperature of cast iron and pollution brought and the high problem of power consumption, and the mode that adopts the punching press produces its production efficiency height, and the shaping is stable, and the outward appearance is pleasing to the eye, the utility model discloses a difficult point in the curved foot production of stainless steel has been overcome to the mould, its mould structure rational design science, the product quality of production is stable, and accords with batch production's characteristics, and the mode that adopts mechanical punching press has replaced original production mode, but direct adaptation in future automated production process, and the special production product that this mould institute adopted 304 or 201 stainless steel seamless steel pipe can the product better life-span longer for original product performance.

Drawings

Fig. 1 is a schematic view of the overall structure of the mold according to the present embodiment.

Fig. 2 is a schematic view of the internal components of the mold according to the embodiment.

Fig. 3 is a schematic view of a partial sectional structure of the mold according to the present embodiment.

Fig. 4 is a schematic structural view of the mandrel bar of the present embodiment.

Reference numerals: 1. mounting a template; 11. an upper die; 111. a pipe feeding groove is formed; 2. a lower template; 21. a lower die; 211. a pipe discharging groove; 4. core pulling holes; 3. a contour cavity; 41. a core rod; 5. briquetting; 9. the leg is bent.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1-4, a flattening die for a stainless steel hot-bending pin comprises an upper die plate 1 and a lower die plate 2, and is characterized in that: the upper die plate 1 and the lower die plate 2 are provided with an upper die 11 and a lower die 21 which are matched with each other, the upper die 11 and the lower die 21 are respectively provided with an upper pipe groove 111 and a lower pipe groove 211, when the upper die 11 and the lower die 21 are closed, a space surrounded by the upper pipe groove 111 and the lower pipe groove 211 forms a contour cavity 3 with a curved pin to be processed, two ends of the contour cavity 3 are respectively provided with a core drawing hole 4 on the outer side walls of the upper die 11 and the lower die 21, the core drawing hole 4 is correspondingly provided with a core rod 41, and the core rods 41 corresponding to two ends of the contour cavity 3 can form an inner hole shape which is the same as the shape of the flattened curved pin 9 after the die is closed;

the upper die 11 and the lower die 21 are respectively provided with a pressure groove which is opposite to the outline cavity 3, the pressure grooves are respectively provided with a pressure block 5 which can move relative to the upper die 11 and the lower die 21, one end of the pressure block 5 is fixedly connected to the upper template 1 and the lower template 2, and the pressure block is driven by the upper template 1 and the lower template 2 to apply pressure for flattening the curved feet 9 to the tube blank to be processed;

the die further comprises a top block 71 which is positioned on the side surface of the pressing block 5 and can move relative to the pressing block 5 and an oil cylinder 7 which is used for driving the top block 71 to move and is fixedly arranged relative to the upper die plate 1 and the lower die plate 2, wherein two ends of the top block 71 respectively support against the upper die plate 1 and the lower die plate 2, the upper die 11 and the lower die 21, and the top block 71 is used for limiting the movement of the pressing block 5.

As a further arrangement of the above scheme, the material of the curved foot 9 adopts 304 stainless steel or 201 stainless steel material.

As a further arrangement of the above solution, the upper and lower templates 1 and 2 are fixed on a press, preferably a hydraulic press, with a pressure of preferably between 100 and 120 tons.

As a further arrangement of the above scheme, the pressing blocks 5 are used for flattening the middle section of the curved leg 9, and the pressing blocks 5 corresponding to the upper and lower parts are driven by the press machine respectively to move simultaneously towards the middle along the pressing groove after the mold is closed and the core rod 41 is in place.

As a further arrangement of the scheme, a plurality of contour cavities 3 can be arranged according to requirements, and the pressure of the hydraulic machine can be adjusted according to the number of the contour cavities 3.

As a further arrangement of the scheme, a step 8 is arranged between the contour cavity 3 of the curved foot 9 and the coring hole 4, and the step 8 is used for positioning when the curved foot 9 is discharged.

As a further arrangement of the scheme, the size of the coring hole 4 is equal to the diameter of the inner hole of the curved leg 9 on one side.

As a further arrangement of the above solution, the front end parts of the mandrels 41 at both ends of the contour cavity 3 are provided with taper surfaces, and the front end taper surfaces of the two mandrels 41 are closely arranged after being butted.

Specifically, the using steps of the mold are as follows:

step 1: the die is arranged on a press machine to be fixed in place, and the press machine of the product preferably adopts a hydraulic press, and the pressure of the hydraulic press is 100-120 tons;

step 2: pressing down a stepping switch of the press, driving the upper die 11 to rise by the work of the press, and exposing the contour cavity 3 to place a curved pin to be processed;

and step 3: after the curved foot to be processed is embedded into the contour cavity 4, the press machine is controlled to work to reset the upper die 11, and after the resetting is completed, the curved foot to be processed is clamped by the upper die 11 and the lower die 21, so that the curved foot to be processed is fixed in the die and cannot move;

and 4, step 4: after the upper die 11 is reset, the press machine controls the hydraulic cylinders on the two sides to push the core rod 41 into the die, and the core rods 41 on the two sides contact to form the same shape as the inner hole of the finished curved pin;

and 5: after the core rod 41 moves to the right position, the oil cylinder positioned at the side of the pressing block 5 works to draw out the jacking block 71 which props against the upper template 1, the lower template 2, the upper die 11 and the lower die 21;

step 6: when the top block 71 is pulled out of the upper die 11 and the lower die 21, the press machine applies pressure to the upper die plate 1 and the lower die plate 2 at the moment, the press blocks 5 fixedly arranged on the upper die plate 1 and the lower die plate 2 are driven by the press machine to move along the pressure grooves from the upper direction to the contour cavity 3, and apply pressure to the curved feet to be processed, so that the curved feet are deformed and fit with the outer contour of the inner mandrel 41;

and 7: after the pressing of the pressing block 5 is finished, the press machine sequentially controls the core rod 41 to be drawn out, the pressing block 5 to be reset, the top block 71 to be reset and finally the upper die 11 to be lifted, at the moment, the finished bent foot is exposed, and the finished bent foot can be conveniently taken down and replaced by a bent foot to be processed;

and 8: after the replacement is completed, the upper die 11 descends to be matched and works in a circulating mode.

The press machine of the embodiment adopts a stepping operation mode, namely, the press machine is pressed to open and close once, in the future production automation, the manual operation of the die table can be replaced by the mechanical arm operation, and the built-in control program of the press machine and the mechanical arm control program are written together, so that the rapid production flow can be met.

The utility model discloses a mould is exclusively used in the warm foot of bending of production stainless steel water, and it is used for flattening forming process to the warm foot production of bending of stainless steel water, for the bent foot of current technical production, adopts the utility model discloses the mould can be the foot of bending of batch production, and the quality of bending the foot is guaranteed, and the uniformity is strong, based on the utility model discloses the structural feature of mould, it has overcome all sorts of difficult points of bending foot production process, constitutes through simple structure, flattens forming process and puts in place one step, has promoted production technology, and but its pure mechanical processing means is realized at automatic in-process adaptation automatic mechanical arm, and the special production product hot-water heating that the mould was bent foot adopts 304 or 201 stainless steel seamless steel pipe to produce the product and can better the life-span longer for original product performance.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, any modification, equivalent replacement, or improvement made within the design concept of the present invention is included within the protection scope of the present invention.

Claims

1. The utility model provides a warm mould that flattens of foot of bending of stainless steel water, includes cope match-plate pattern (1) and lower bolster (2), its characterized in that: the upper template (1) and the lower template (2) are provided with an upper die (11) and a lower die (21) which are matched with each other, the upper die (11) and the lower die (21) are respectively provided with an upper pipe groove (111) and a lower pipe groove (211), when the upper die (11) and the lower die (21) are closed, a space surrounded by the upper pipe groove (111) and the lower pipe groove (211) forms a profile cavity (3) with a curved pin to be processed, two ends of the profile cavity (3) are respectively provided with a core pulling hole (4) on the outer side walls of the upper die (11) and the lower die (21), the core pulling hole (4) is correspondingly provided with a core rod (41), and the core rods (41) corresponding to two ends of the profile cavity (3) can form an inner hole shape which is the same as the flattened shape of the curved pin (9) after the die is closed;

the upper die (11) and the lower die (21) are respectively provided with a pressure groove which is just opposite to the outline cavity (3), the pressure grooves are respectively provided with a press block (5) which can move relative to the upper die (11) and the lower die (21), one end of the press block (5) is fixedly connected to the upper template (1) and the lower template (2), and the press block is driven by the upper template (1) and the lower template (2) to apply pressure of flattening curved feet (9) to the tube blank to be processed;

the die pressing device is characterized by further comprising a top block (71) which is located on the side face of the pressing block (5) and can move relative to the pressing block (5) and an oil cylinder (7) which is used for driving the top block (71) to move and is fixedly arranged relative to the upper die plate (1) and the lower die plate (2), wherein two ends of the top block (71) respectively abut against the upper die plate (1), the lower die plate (2), the upper die (11) and the lower die (21) and are used for limiting the movement of the pressing block (5).

2. The flattening die for the stainless steel hot bent pin as claimed in claim 1, characterized in that the material of the bent pin (9) is 304 stainless steel or 201 stainless steel.

3. The flattening die for the stainless steel hot bent pin as claimed in claim 1, wherein the upper die plate (1) and the lower die plate (2) are fixed on a press, preferably a hydraulic press, the pressure of which is preferably between 100 tons and 120 tons.

4. The flattening die for the stainless steel hot bent pin as claimed in claim 3, characterized in that the pressing blocks (5) are located in the middle section of the flattened bent pin (9), and the pressing blocks (5) corresponding to the upper and lower parts are driven by the press respectively to be closed and move simultaneously towards the middle along the pressing groove after the core rod (41) is in place.

5. The flattening die for the stainless steel hot bent pins as claimed in claim 3, wherein a plurality of contour cavities (3) can be arranged according to requirements, and the pressure of the hydraulic machine can be adjusted according to the number of the contour cavities (3).

6. The flattening die for the stainless steel hot bent pin as claimed in claim 1, characterized in that a step (8) is arranged between the contour cavity (3) of the bent pin (9) and the core-pulling hole (4), and the step (8) is used for positioning the bent pin (9) during discharging.

7. The flattening die for the stainless steel hot bent leg as claimed in claim 1, characterized in that the size of the coring hole (4) is equal to the inner hole diameter of the bent leg (9) on one side.

8. The flattening die for the stainless steel hot bent pin as claimed in claim 1, characterized in that the front end parts of the core rods (41) at the two ends of the contour cavity (3) are provided with tapered surfaces, and the front end tapered surfaces of the two core rods (41) are arranged in close contact after butt joint.