Water expansion forming machine for stainless steel pipe

Abstract

The utility model discloses a stainless steel pipe water expansion forming machine which comprises a base, a top plate is connected to the base through a support, a lower die and an upper die are arranged on the side faces, close to each other, of the base and the top plate respectively, the stainless steel pipe water expansion forming machine further comprises two controlled blocks, and the controlled blocks are distributed on the left side and the right side of the lower die. The two opposite threads machined on the driving shaft drive the pressing rods to move in the opposite direction, the driving mode is simple and durable, the first protection plate and the second protection plate are arranged in the device, and therefore the pressing rods can be driven to move in the opposite direction through the two opposite threads machined on the driving shaft to move in the opposite direction, and the service life of the device is prolonged. Water splashed after water swelling forming of the stainless steel pipe is avoided from flushing the driving shaft, so that the driving shaft is prevented from being rusted or being blocked due to flushing away lubricating oil, and the service life of the driving shaft is prolonged. In addition, the controlled block is connected into the drainage groove in a sliding mode, so that the controlled block moves stably, and bending of the controlled block is avoided.

Description

Technical Field

[0001] This utility model relates to the field of water expansion forming machine technology, and in particular to a water expansion forming machine for stainless steel pipes. Background Technology

[0002] Water-blown molding refers to a process in which a stainless steel tube is placed in a mold, and high-pressure water is poured into the stainless steel tube while pressure is applied to both ends of the tube, thereby deforming the outer wall of the stainless steel tube and making it fit tightly into the mold cavity.

[0003] As shown in the stainless steel pipe processing water expansion forming machine disclosed in application number 202410106141.5, the current low-cost water expansion forming machine generally uses a drive screw with two threads to drive the movement of the plug used to inject water into the stainless steel pipe. However, after the stainless steel pipe is formed and the plug is removed, the high-pressure water inside will splash out, which can easily wash over the drive screw and remove the lubricating oil on it. Over time, this will affect the service life of the drive screw, so it needs to be improved. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a water-expanding forming machine for stainless steel pipes, thereby solving the problems mentioned in the background section.

[0005] This utility model provides the following technical solution: a water expansion forming machine for stainless steel pipes, including a base, a top plate connected to the base by a bracket, and a lower mold and an upper mold respectively provided on the sides of the base and the top plate that are close to each other;

[0006] It also includes two controlled blocks, which are distributed on the left and right sides of the lower mold. Each of the two controlled blocks has a pressure rod on its side that is close to each other. The pressure rod has a water outlet inside, and the controlled block is equipped with a water supply pipe for supplying water to the water outlet.

[0007] The upper side of the base is provided with a sliding groove, and a first drive shaft is rotatably connected in the sliding groove. The base is provided with a first motor for driving the first drive shaft. The two controlled blocks extend into the sliding groove and are respectively threaded to two opposite threads in the first drive shaft.

[0008] The lower mold is provided with a first protective plate on each of its left and right sides to shield the sliding groove.

[0009] Preferably, the upper side of the base is provided with two drainage grooves, which are distributed on the front and rear sides of the lower mold, and the bottom surface of the drainage grooves is inclined.

[0010] Preferably, the upper side of the first guard plate is an arc surface that is higher in the middle and lower at the front and back, and the front and back edges of the first guard plate are located on the upper side of the drainage groove.

[0011] Preferably, the thickness of the first protective plate remains consistent.

[0012] Preferably, a second protective plate is provided on the side of each of the two controlled blocks that are close to each other, and the second protective plate is attached to the lower side of the first protective plate that is close to it.

[0013] Preferably, the lower mold and the upper mold are each provided with a groove on their adjacent sides, and the top plate is provided with a cylinder for controlling the lifting and lowering of the upper mold. The upper side of the upper mold is also provided with an array of several insert rods that penetrate the top plate.

[0014] Preferably, the controlled block extends forward and backward into the drainage channel and is slidably connected to the wall of the drainage channel.

[0015] This utility model provides a water-expansion forming machine for stainless steel pipes, which has the following beneficial effects:

[0016] This utility model uses two opposite threads machined on the drive shaft to drive the pressure rod to move in opposite directions. The drive mode is simple and durable. In addition, this utility model is equipped with a first guard plate and a second guard plate to prevent water splashing out after the stainless steel pipe is formed by water expansion from washing the drive shaft, so as to prevent the drive shaft from rusting or washing away the lubricating oil and causing jamming, thus improving the service life of the drive shaft.

[0017] The controlled block in this invention is also slidably connected to the drainage trough, which makes the movement of the controlled block stable and prevents it from bending. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the appearance of this utility model;

[0019] Figure 2 This is a structural schematic diagram of the present invention.

[0020] In the picture:

[0021] 11. Base; 12. Top plate; 13. Lower mold; 14. Upper mold; 15. Controlled block; 16. Pressure rod; 17. Slide groove; 18. Drive shaft No. 1; 19. Motor No. 1; 20. Guard plate No. 1; 21. Drainage groove; 22. Guard plate No. 2; 25. Cylinder; 26. Shaped groove. Detailed Implementation

[0022] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0023] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] Reference Figures 1-2 According to an embodiment of the water-expanding forming machine for stainless steel pipes of this utility model, it includes a base 11, a top plate 12 connected to the base 11 by a bracket, a lower mold 13 and an upper mold 14 respectively provided on the side of the base 11 and the top plate 12 that are close to each other, a groove 26 is provided in the side of the lower mold 13 and the upper mold 14 that are close to each other, and a cylinder 25 for controlling the lifting and lowering of the upper mold 14 is provided on the top plate 12, and several insert rods penetrating the top plate 12 are also arranged in an array on the upper side of the upper mold 14.

[0027] It also includes two controlled blocks 15, which are distributed on the left and right sides of the lower mold 13. Each of the two controlled blocks 15 has a pressure rod 16 on its side that is close to each other. The pressure rod 16 has a water outlet inside, and the controlled block 15 is equipped with a water supply pipe for supplying water to the water outlet.

[0028] The upper side of the base 11 is provided with a sliding groove 17, and a first drive shaft 18 is rotatably connected in the sliding groove 17. The base 11 is provided with a first motor 19 for driving the first drive shaft 18. Two controlled blocks 15 extend into the sliding groove 17 and are respectively threaded to two opposite threads in the first drive shaft 18.

[0029] When the stainless steel pipe is placed in the groove 26 within the lower mold 13, the operator can control the upper mold 14 to press down using the cylinder 25. During this process, the insert rod ensures the smooth movement of the upper mold 14. After the upper mold 14 is attached to the lower mold 13, the first motor 19 is energized, causing the first drive shaft 18 to rotate. At this time, the two controlled blocks 15 drive the pressure rods 16 to move closer to each other, causing the head of the pressure rods 16 to insert into the groove 26. Then, the water supply pipe supplies water, and the pressure rods 16 push the steel pipe to perform water expansion forming.

[0030] To prevent water splashing from the pressure rods 16 when they move away from each other from acting on the first drive shaft 18 and washing away the lubricating oil, a first guard plate 20 is provided on each of the left and right sides of the lower mold 13 to shield the lower slide groove 17.

[0031] Furthermore, the upper side of the base 11 is provided with two drainage grooves 21, which are distributed on the front and rear sides of the lower mold 13. The bottom surface of the drainage grooves 21 is inclined to facilitate drainage. The upper side of the first guard plate 20 is an arc surface that is higher in the middle and lower at the front and rear. The front and rear edges of the first guard plate 20 are located on the upper side of the drainage grooves 21, so that water splashed on the first guard plate 20 can flow into the drainage grooves 21.

[0032] In a second embodiment of the stainless steel pipe water expansion forming machine, in order to further prevent water from contacting the first drive shaft 18, the thickness of the first guard plate 20 is kept consistent, and a second guard plate 22 is provided on the side of the two controlled blocks 15 that are close to each other. The second guard plate 22 is attached to the lower side of the first guard plate 20 that is close to it to form a connection.

[0033] In a third embodiment of the stainless steel pipe hydroforming machine, in order to make the movement of the controlled block 15 stable, the controlled block 15 extends forward and backward into the drainage groove 21 and is slidably connected to the wall of the drainage groove 21.

[0034] The above description is only a specific embodiment of the present utility model, but the technical features of the present utility model are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present utility model are covered by the patent scope of the present utility model.

Claims

1. A water-expanding forming machine for stainless steel pipes, comprising a base (11), characterized in that: A top plate (12) is connected to the base (11) by a bracket. The base (11) and the top plate (12) are respectively provided with a lower mold (13) and an upper mold (14) on their sides that are close to each other. It also includes two controlled blocks (15), which are distributed on the left and right sides of the lower mold (13), and each of the two controlled blocks (15) is provided with a pressure rod (16) on the side that is close to each other. The pressure rod (16) is provided with a water outlet, and the controlled block (15) is equipped with a water supply pipe for supplying water to the water outlet. The upper side of the base (11) is provided with a sliding groove (17), and a first drive shaft (18) is rotatably connected in the sliding groove (17). The base (11) is provided with a first motor (19) for driving the first drive shaft (18). Two controlled blocks (15) extend into the sliding groove (17) and are respectively threaded into two opposite threads in the first drive shaft (18). The lower mold (13) is provided with a first guard plate (20) on each of its left and right sides to cover the lower groove (17).

2. The water-expanding forming machine for stainless steel pipes according to claim 1, characterized in that: The upper side of the base (11) is provided with two drainage grooves (21), which are distributed on the front and rear sides of the lower mold (13), and the bottom surface of the drainage grooves (21) is set at an angle.

3. The water-expanding forming machine for stainless steel pipes according to claim 2, characterized in that: The upper side of the first guard plate (20) is an arc surface that is high in the middle and low on both sides, and the front and rear edges of the first guard plate (20) are located on the upper side of the drainage groove (21).

4. The water-expanding forming machine for stainless steel pipes according to claim 3, characterized in that: The thickness of the first protective plate (20) remains consistent.

5. The water-expanding forming machine for stainless steel pipes according to claim 4, characterized in that: A second guard plate (22) is provided on the side of each of the two controlled blocks (15) that are close to each other, and the second guard plate (22) is attached to the lower side of the first guard plate (20) that is close to it.

6. The water-expanding forming machine for stainless steel pipes according to claim 1, characterized in that: The lower mold (13) and the upper mold (14) are each provided with a groove (26) on their sides that are close to each other, and the top plate (12) is provided with a cylinder (25) for controlling the lifting and lowering of the upper mold (14). The upper side of the upper mold (14) is also provided with an array of several insert rods that penetrate the top plate (12).

7. A water-expanding forming machine for stainless steel pipes according to claim 2, characterized in that: The controlled block (15) extends forward and backward into the drainage channel (21) and is slidably connected to the wall of the drainage channel (21).

Images