Lossless drawing die assembly for stainless steel composite pipe

Abstract

The utility model discloses a stainless steel composite pipe lossless drawing die assembly which comprises a die base, a die installation opening used for containing a drawing die is formed in the die base, and an oil storage tank is fixedly connected under the die base. The cleaning mechanism is detachably connected to the mold base, and the cleaning mechanism is arranged right opposite to the drawing mold and is provided with a plurality of cleaning pieces; and the oil circulating mechanism is fixedly connected to the die base, the oil inlet end of the oil circulating mechanism communicates with the oil storage tank, and the oil outlet end of the oil circulating mechanism is connected to the cleaning mechanism and the drawing die. The oil circulating mechanism conveys lubricating oil to the drawing die for cooling and lubricating, so that the expansion of the drawing die is reduced, the friction force between the drawing die and the stainless steel composite pipe is reduced, and the precision of processing the stainless steel composite pipe by the drawing die is improved; and the cleaning mechanism can clean the stainless steel composite pipe to improve the cleanliness of the stainless steel composite pipe, so that the abrasion of the stainless steel composite pipe in the drawing process is reduced, and the quality of a stainless steel composite pipe finished product is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of drawing dies, and particularly relates to a non-destructive drawing die assembly for stainless steel composite pipes. Background Art

[0002] A drawing machine is a device widely used in the metal processing industry, mainly used for drawing and processing pipes, bars, profiles and wires to change their shapes and sizes.

[0003] When using a drawing machine to process stainless steel composite pipes, the stainless steel composite pipes pass through the die holes of the drawing die, and the mutual friction between the two causes the temperature of the contact part to rise. The high temperature causes the drawing die to expand, thus affecting the processing accuracy; and the impurities adhered to the stainless steel composite pipes and the drawing die will cause wear during the drawing process, shorten the service life of the drawing die, and affect the surface smoothness of the stainless steel composite pipes.

[0004] Therefore, there is an urgent need for a drawing die assembly to solve the above problems. Summary of the Utility Model

[0005] The purpose of the utility model is to overcome the defects existing in the prior art, and provide a non-destructive drawing die assembly for stainless steel composite pipes to improve the accuracy and quality of processing stainless steel composite pipes.

[0006] To achieve the above purpose, the specific technical solution of the non-destructive drawing die assembly for stainless steel composite pipes of the utility model is as follows:

[0007] A non-destructive drawing die assembly for stainless steel composite pipes, comprising:

[0008] A die seat, provided with a die mounting opening for accommodating a drawing die, and a fuel tank is fixedly connected to the lower part directly below it;

[0009] A cleaning mechanism, detachably connected to the die seat, the cleaning mechanism is arranged opposite to the drawing die, and has a plurality of cleaning parts rotatably arranged around the axis of the drawing die;

[0010] An oil circulation mechanism, fixedly connected to the die seat, the oil inlet end of the oil circulation mechanism communicates with the fuel tank, and the oil outlet end of the oil circulation mechanism is connected to the cleaning mechanism and the drawing die.

[0011] Preferably, an annular oil guiding groove and a plurality of oil overflow grooves extending along the axial direction of the die mounting opening are circumferentially arranged on the inner wall of the die mounting opening, the oil guiding groove and the oil overflow groove are communicated with each other, and the oil outlet end of the oil circulation mechanism is communicated with the oil guiding groove.

[0012] Preferably, the drawing die is inserted and fitted with the die mounting opening. A limiting ring is fixedly connected to the end opening of the die mounting opening. A plurality of retaining bars are connected to the front opening of the die mounting opening by bolts. The retaining bars and the limiting ring respectively abut against both sides of the drawing die.

[0013] Preferably, the oil circulation mechanism includes an oil pipe and an oil pump installed on the oil pipe. The oil inlet of the oil pipe is communicated with the oil storage tank, and the oil outlet of the oil pipe is communicated with the oil guiding groove.

[0014] Preferably, a sponge filter block is filled and arranged inside the oil storage tank.

[0015] Preferably, the cleaning mechanism includes an outer sleeve coaxially arranged with the drawing die. An inner drum coaxially arranged is connected inside the outer sleeve through a bearing. The outer sleeve is provided with a power member for driving the inner drum to rotate. Each cleaning member is evenly distributed around the axis of the inner drum on the inner wall of the inner drum.

[0016] Preferably, an oil inlet is opened at the top of the outer sleeve. The oil outlet of the oil pipe is communicated with the oil inlet. A plurality of through holes are evenly distributed on the barrel wall of the inner drum.

[0017] Preferably, the cleaning member includes a socket and a brush. A T-shaped socket groove is arranged on the inner wall of the inner drum along its own axis. The socket is inserted and fitted with the socket groove, and the brush is fixedly connected to the socket.

[0018] Preferably, two side baffles are arranged between the die seat and the oil storage tank. The two side baffles are located on both sides of the die seat and are arranged oppositely. The side baffle is provided with an installation groove along the axial direction of the die mounting opening. An installation strip slidably fitted with the installation groove is fixedly connected to the side of the outer sleeve.

[0019] The non-destructive drawing die assembly for stainless steel composite pipes of the present utility model has the following advantages: The oil circulation mechanism sends lubricating oil to the drawing die for cooling and lubrication, thereby reducing the expansion of the drawing die and reducing the friction between the drawing die and the stainless steel composite pipe, improving the precision of processing the stainless steel composite pipe by the drawing die; the cleaning mechanism can clean the stainless steel composite pipe, improving the cleanliness of the stainless steel composite pipe, thereby reducing the wear of the stainless steel composite pipe during the drawing process and improving the quality of the finished product of the stainless steel composite pipe; the circulating lubricating oil can also flush the stainless steel composite pipe and the drawing die, further improving the cleanliness, thereby reducing the mutual wear between the stainless steel composite pipe and the drawing die during drawing, improving the quality of the finished product of the stainless steel composite pipe, and prolonging the service life of the drawing die. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The front structural schematic diagram of the drawing die assembly of the present utility model;

[0021] Figure 2 The back structural schematic diagram of the drawing die assembly of the present utility model;

[0022] Figure 3 The connection structural schematic diagram of the die holder and the oil circulation mechanism of the present utility model;

[0023] Figure 4 The structural schematic diagram of the die holder of the present utility model;

[0024] Figure 5 is Figure 4 The enlarged view of part A of

[0025] Figure 6 The exploded structural schematic diagram of the cleaning mechanism of the present utility model;

[0026] Explanation of the marks in the figure: 1, die holder; 2, oil circulation mechanism; 3, cleaning mechanism; 4, drawing die; 5, sponge filter block; 101, side baffle; 102, oil storage tank; 103, limiting ring; 104, installation groove; 105, bar; 106, die installation opening; 107, oil guiding groove; 108, oil overflow groove; 201, oil pump; 202, oil pipe; 301, power component; 302, outer sleeve; 303, installation bar; 304, oil inlet; 305, inner roller; 306, insertion groove; 307, insertion seat; 308, brush bristles. Specific embodiments

[0027] The following combines the drawings and embodiments to further describe the specific embodiments of the present utility model. The following embodiments are only used to more clearly illustrate the technical solutions of the present utility model, and cannot be used to limit the protection scope of the present utility model.

[0028] "Top surface", "bottom", "bottom surface" are referenced based on the normal use state of the drawing die assembly, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model.

[0029] Such as Figure 1 and 2As shown in the figure, a non-destructive drawing die assembly for a stainless steel composite pipe includes a die holder 1, which is provided with a die mounting opening 106 for accommodating a drawing die 4, and a storage oil tank 102 is fixedly connected directly below it; a cleaning mechanism 3, which is detachably connected to the die holder 1, the cleaning mechanism 3 is arranged opposite to the drawing die 4, and has a plurality of cleaning parts rotatably arranged around the axis of the drawing die 4; an oil circulation mechanism 2, which is fixedly connected to the die holder 1, the oil inlet end of the oil circulation mechanism 2 is communicated with the storage oil tank 102, and the oil outlet end of the oil circulation mechanism 2 is connected to the cleaning mechanism 3 and the drawing die 4.

[0030] The above-mentioned drawing die assembly is a part of a drawing machine. The drawing machine also includes a pulling device for pulling the stainless steel composite pipe forward. When the drawing die assembly is in use, the front end of the stainless steel composite pipe is sequentially passed through the cleaning mechanism 3 and the die hole of the drawing die 4 and then fixed to the pulling device. The stainless steel composite pipe is pulled by the pulling device until the stainless steel composite pipe completely passes through the drawing die 4 to complete the drawing process of the stainless steel composite pipe; during the drawing process, the cleaning parts of the cleaning mechanism 3 rotate around the stainless steel composite pipe, and the impurities adhered to the outer surface of the stainless steel composite pipe are cleaned by the cleaning parts, so that during the process of the stainless steel composite pipe passing through the drawing die 4, the mutual wear between the stainless steel composite pipe and the drawing die 4 is reduced, the service life of the drawing die 4 is prolonged, and the quality of the finished stainless steel composite pipe is improved; during the drawing process, the oil circulation mechanism 2 sends the lubricating oil stored inside the storage oil tank 102 to the cleaning mechanism 3 and the drawing die 4. The lubricating oil sent to the cleaning mechanism 3 can be used to wash the stainless steel composite pipe, improving the cleaning effect on the stainless steel composite pipe, and the lubricating oil can also be evenly applied on the stainless steel composite pipe, improving the lubricating effect on the stainless steel composite pipe, further reducing the wear during the drawing of the stainless steel composite pipe, and reducing the heat generated during drawing by reducing the friction force; the lubricating oil sent to the drawing die 4 can play the roles of lubrication, cleaning and cooling, thereby improving the processing accuracy of the drawing die 4 for the stainless steel composite pipe and improving the quality of the finished stainless steel composite pipe. Finally, the lubricating oil at the drawing die 4 and the cleaning mechanism 3 flows back into the storage oil tank 102 to realize the circulation of the lubricating oil.

[0031] In this drawing die assembly, the cleanliness of the stainless steel composite pipe and the drawing die 4 is improved by the flushing of the lubricating oil, thereby reducing the wear between the stainless steel composite pipe and the drawing die 4. At the same time, the cleaning effect is further ensured by cooperating with the cleaning of the stainless steel composite pipe by the cleaning parts; the lubrication and cooling of the drawing die 4 are also realized through the circulation of the lubricating oil, thereby improving the processing accuracy of the stainless steel composite pipe.

[0032] A further improvement is, as Figure 4 and 5As shown in the figure, an annular oil guide groove 107 and a plurality of oil overflow grooves 108 extending along the axial direction of the mold installation port 106 are circumferentially arranged on the inner wall of the mold installation port 106. Each oil overflow groove 108 is circumferentially and equally spaced around the axis of the mold installation port 106. The oil guide groove 107 and the oil overflow groove 108 are interconnected, and the oil outlet end of the oil circulation mechanism 2 is communicated with the oil guide groove 107. The drawing die 4 is installed inside the mold installation port 106. After the lubricating oil enters the interior of the oil guide groove 107, it flows along the oil guide groove 107 to the periphery of the drawing die 4, which can increase the contact range between the lubricating oil and the drawing die 4 and improve the cooling effect. After the lubricating oil fills the oil guide groove 107, it can overflow from the oil overflow groove 108 and the gap between the drawing die 4 and the inner wall of the mold installation port 106 to the two side surfaces of the drawing die 4, further increasing the contact range between the lubricating oil and the drawing die 4 and improving the cooling effect. Then, the lubricating oil flows back into the interior of the oil storage tank 102 under the action of gravity, realizing the circulation of the lubricating oil.

[0033] A further improvement is that, as Figures 2 - 5 shown, the drawing die 4 is inserted and matched with the mold installation port 106. A limit ring 103 is fixedly connected to the end opening of the mold installation port 106, and a plurality of retaining bars 105 are bolted to the front opening of the mold installation port 106. The retaining bars 105 and the limit ring 103 respectively abut against the two sides of the drawing die 4. The plurality of retaining bars 105 are circumferentially and equally spaced around the axis of the mold installation port 106. The retaining bars 105 can be disassembled and assembled by bolts. When the retaining bars 105 are installed, the retaining bars 105 and the limit ring 103 fix the drawing die 4 from both sides, improving the stability of the drawing die 4 installed in the mold installation port 106. When the retaining bars 105 are disassembled, the drawing die 4 can be removed from the mold installation port 106, improving the convenience of disassembling and assembling the drawing die 4. The limit ring 103 is located in front of the drawing die 4 along the advancing direction of the stainless steel composite pipe, so that the limit ring 103 can provide better support for the drawing die 4 and improve the stability of the drawing die 4.

[0034] A further improvement is that, as Figures 1 - 4 shown, the oil circulation mechanism 2 includes an oil pipe 202 and an oil pump 201 installed on the oil pipe 202. The oil inlet 304 of the oil pipe 202 is communicated with the oil storage tank 102, and the oil outlet of the oil pipe 202 is communicated with the oil guide groove 107. During use, the oil pump 201 provides power to send the lubricating oil in the oil storage tank 102 to the oil guide groove 107 and the cleaning mechanism 3 through the oil pipe 202, and then the lubricating oil flows back into the oil storage tank 107 under the action of gravity to realize circulating flow.

[0035] A further improvement is that, as Figure 1 and 2As shown in the figure, a sponge filter block 5 is filled and arranged inside the oil storage tank 102. The sponge filter block 5 can filter out impurities in the lubricating oil. The sponge filter block 5 can be directly placed inside the oil storage tank 102 so as to cover the connection part between the oil storage tank 102 and the oil pipe 202, thereby facilitating the replacement of the sponge filter block 5.

[0036] A further improvement is that, as Figure 6 shown, the cleaning mechanism 3 includes an outer sleeve 302 coaxially arranged with the drawing die 4. An inner drum 305 coaxially arranged is connected inside the outer sleeve 302 through a bearing. The outer sleeve 302 is provided with a power member 301 for driving the inner drum 305 to rotate. Each cleaning member is distributed equidistantly around the axis of the inner drum 305 on the inner wall of the inner drum 305. During use, the outer sleeve 302 plays a role in supporting the inner drum 305. The stainless steel composite pipe passes through the inside of the inner drum 305. The power member 301 includes a motor, a gear fixed on the output shaft of the motor, and a gear ring arranged on the outer periphery of the inner drum 305. The motor drives the gear to rotate, and the gear is in transmission with the gear ring, thereby driving the inner drum 305 to rotate. The inner drum 305 drives each cleaning member to rotate, so as to circumferentially clean the outer periphery of the stainless steel composite pipe through the cleaning members.

[0037] A further improvement is that, as Figure 6 shown, an oil inlet 304 is opened at the top of the outer sleeve 302. The oil outlet of the oil pipe 202 is communicated with the oil inlet 304. A plurality of through holes are uniformly distributed on the barrel wall of the inner drum 305. After the lubricating oil enters from the oil inlet 304, it flows downward under the action of gravity, and then passes through the through holes and flows onto the stainless steel composite pipe, so as to lubricate the stainless steel composite pipe and take away impurities on the stainless steel composite pipe and the cleaning members, realizing the cleaning of the stainless steel composite pipe and the cleaning members and improving the cleaning effect on the stainless steel composite pipe.

[0038] A further improvement is that, as Figure 6 shown, the cleaning member includes a plug-in seat 307 and bristles 308. A T-shaped plug-in groove 306 is arranged along the axial direction of the inner wall of the inner drum 305. The plug-in seat 307 is in plug-in fit with the plug-in groove 306, and the bristles 308 are fixedly connected with the plug-in seat 307. The arrangement of the plug-in groove 306 and the plug-in seat 307 facilitates the disassembly and assembly between the two, and further improves the convenience of replacing the cleaning member.

[0039] A further improvement is that, as Figure 6As shown, there are two side baffles 101 arranged between the mold base 1 and the oil storage tank 102. The two side baffles 101 are located on both sides of the mold base 1 and are arranged opposite to each other. The side baffle 101 is provided with an installation groove 104 along the axial direction of the mold installation opening 106. A mounting strip 303 that is slidably engaged with the installation groove 104 is fixedly connected to the side surface of the outer sleeve 302. The arrangement of the installation groove 104 and the mounting strip 303 can improve the convenience of disassembling and assembling the outer sleeve 302, and further improve the convenience of disassembling and assembling the cleaning mechanism 3, so as to improve the convenience of using the drawing die assembly.

[0040] It can be understood that the present utility model is described by means of some embodiments. Those skilled in the art know that without departing from the spirit and scope of the present utility model, various changes or equivalent replacements can be made to these features and embodiments. In addition, under the teaching of the present utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present utility model.

Claims

1. A non-destructive drawing die assembly for a stainless steel composite pipe, characterized in that, Comprising: A die holder (1) is provided with a die mounting opening (106) for accommodating a drawing die (4), and an oil storage tank (102) is fixedly connected directly below it; A cleaning mechanism (3) is detachably connected to the die holder (1), the cleaning mechanism (3) is arranged opposite to the drawing die (4), and has a plurality of cleaning parts rotatably arranged around the axis of the drawing die (4); An oil circulation mechanism (2) is fixedly connected to the die holder (1), the oil inlet end of the oil circulation mechanism (2) communicates with the oil storage tank (102), and the oil outlet end of the oil circulation mechanism (2) is connected to the cleaning mechanism (3) and the drawing die (4).

2. The non-destructive drawing die assembly for stainless steel composite pipes according to claim 1, characterized in that An annular oil guide groove (107) and a plurality of oil overflow grooves (108) extending along the axial direction of the die mounting opening (106) are circumferentially arranged on the inner wall of the die mounting opening (106), the oil guide groove (107) and the oil overflow groove (108) communicate with each other, and the oil outlet end of the oil circulation mechanism (2) communicates with the oil guide groove (107).

3. The non-destructive drawing die assembly for stainless steel composite pipes according to claim 1 or 2, characterized in that, The drawing die (4) is in plug-in fit with the die mounting opening (106), a limiting ring (103) is fixedly connected to the end opening of the die mounting opening (106), and a plurality of blocking strips (105) are connected by bolts to the front opening of the die mounting opening (106), and the blocking strips (105) and the limiting ring (103) respectively abut against both sides of the drawing die (4).

4. The non-destructive drawing die assembly for stainless steel composite pipes according to claim 2, characterized in that, The oil circulation mechanism (2) includes an oil pipe (202) and an oil pump (201) installed on the oil pipe (202), the oil inlet (304) of the oil pipe (202) communicates with the oil storage tank (102), and the oil outlet of the oil pipe (202) communicates with the oil guide groove (107).

5. The non-destructive drawing die assembly for stainless steel composite pipes according to claim 4, characterized in that, A sponge filter block (5) is filled and arranged inside the oil storage tank (102).

6. The non-destructive drawing die assembly for stainless steel composite pipes according to claim 4, characterized in that, The cleaning mechanism (3) includes an outer sleeve (302) coaxially arranged with the drawing die (4), an inner drum (305) coaxially arranged is connected inside the outer sleeve (302) through a bearing, the outer sleeve (302) is provided with a power member (301) for driving the inner drum (305) to rotate, and each cleaning part is evenly distributed on the inner wall of the inner drum (305) at equal intervals around the axis of the inner drum (305).

7. The non-destructive drawing die assembly for stainless steel composite pipes according to claim 6, characterized in that, An oil inlet (304) is opened at the top of the outer sleeve (302), the oil outlet of the oil pipe (202) communicates with the oil inlet (304), and a plurality of through holes are evenly distributed on the barrel wall of the inner drum (305).

8. The non-destructive drawing die assembly for stainless steel composite pipes according to claim 6, characterized in that, The cleaning part includes a plug-in seat (307) and a brush (308), a T-shaped plug-in groove (306) is axially arranged on the inner wall of the inner drum (305), the plug-in seat (307) is in plug-in fit with the plug-in groove (306), and the brush (308) is fixedly connected to the plug-in seat (307).

9. The non-destructive drawing die assembly for stainless steel composite pipes according to claim 6, characterized in that, There are two side baffles (101) arranged between the mold base (1) and the oil storage tank (102). The two side baffles (101) are located on both sides of the mold base (1) and are arranged opposite to each other. The side baffle (101) is provided with an installation groove (104) along the axial direction of the mold installation opening (106), and the side surface of the outer sleeve (302) is fixedly connected with an installation strip (303) that is slidably matched with the installation groove (104).

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