Die for spiral steel pipe with replaceable pressing groove

Abstract

The invention discloses a spiral steel pipe mold with a replaceable pressing groove, and belongs to the technical field of spiral steel pipe production, the spiral steel pipe mold comprises a working plate, a supporting piece is arranged on the upper surface of the working plate, the upper surface of the working plate is in bolted connection with an equipment box, and the inner wall of the equipment box is in bolted connection with a hydraulic telescopic rod; and the output end of the hydraulic telescopic rod is fixedly connected with a fixed plate. According to the mold for the spiral steel pipe with the replaceable pressing groove, in the working process, a workpiece is placed on the supporting piece, at the moment, the hydraulic telescopic rod drives the pressing groove wheel to descend, the pressing groove wheel abuts against the workpiece, then the supporting piece drives the workpiece to rotate, the pressing groove wheel works, and pressing groove forming is conducted on the workpiece; the cleaning block does reciprocating rectilinear motion in the vertical direction, the surface of the groove pressing wheel can be efficiently cleaned through the banister brush layer, impurities cannot be accumulated on the surface of the groove pressing wheel, then the locking piece cannot be blocked, and the smoothness when the groove pressing wheel is replaced is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of spiral steel pipe production technology, specifically to a mold for spiral steel pipe with replaceable pressing grooves. Background Technology

[0002] The core function of spiral welded steel pipes is to transport fluids and provide structural support. With their advantages of high strength, corrosion resistance, and low cost, they are widely used in energy transmission, municipal infrastructure, industrial production, agriculture, and water conservancy. During the production of spiral welded steel pipes, grooving molds are needed to groove the pipes, providing standardized interfaces for subsequent pipe connections. This necessitates the use of spiral welded steel pipe molds. For example, Chinese patent application number 202220117224.0, filed on January 17, 2022, describes a grooving device for large-diameter, high-wall-thickness spiral welded steel pipes. This device includes a base with grooving components on it, comprising two symmetrically arranged bases and grooving components. The two ends of the large-diameter, high-wall-thickness spiral welded steel pipe are placed on the grooving components on both sides. A hydraulic booster is provided on the base, and the grooving components repeatedly groov the large-diameter, high-wall-thickness spiral welded steel pipe. A support component is located below the large-diameter, high-wall-thickness spiral welded steel pipe. A hydraulic booster is used to control the pressure increase and decrease of the hydraulic cylinder, thereby controlling the pressure of the hydraulic cylinder and the upper pressure roller on the large-diameter, high-wall-thickness spiral steel pipe. This allows for multiple cycles of grooving treatment on the large-diameter, high-wall-thickness spiral steel pipe. During use, it solves the problem that the pressure roller pressure is too low for large-wall-thickness steel pipes to form grooves. The motor and lower pressure roller drive the large-diameter, high-wall-thickness spiral steel pipe to rotate. With the help of support components, it solves the problem that the large-diameter, high-tonnage steel pipes are too heavy to rotate.

[0003] During use, the grooving wheel's long-term compression and friction can directly damage its key structure, affecting the grooving quality and necessitating replacement. Furthermore, the dust and impurities in the production workshop can hinder replacement when these impurities adhere to the locking mechanism of the grooving wheel. The device described in the aforementioned application does not provide auxiliary cleaning; if impurities (such as metal shavings or sludge) accumulate on the operating area of ​​the locking mechanism, they can obscure the force points of disassembly tools, causing wrenches and screwdrivers to slip and preventing effective disassembly force application. Therefore, we propose a replaceable grooving mold for spiral steel pipes to address these problems. Summary of the Invention

[0004] The purpose of this invention is to provide a replaceable grooved mold for spiral steel pipes to solve the problems mentioned in the background art, which are that the mold does not have an auxiliary cleaning function during use, and if impurities (such as metal shavings and sludge) accumulate on the operating part of the locking part, they will cover the force point of the disassembly tool, causing the wrench and screwdriver to be unable to engage accurately, resulting in "slippage" and inability to effectively apply disassembly force.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A mold for replaceable grooved spiral steel pipes includes a working plate, a support member on the upper surface of the working plate, an equipment box bolted to the upper surface of the working plate, and a hydraulic telescopic rod bolted to the inner wall of the equipment box; a fixed plate fixedly connected to the output end of the hydraulic telescopic rod; a motor bolted to the inner wall of the fixed plate, a connecting shaft fixedly connected to the output end of the motor, and a grooved wheel connected to the surface of the connecting shaft via a locking member to enable replacement of the grooved wheel; a movable plate connected to the fixed plate via a lifting assembly, and a cleaning block movably connected inside the movable plate; a storage bladder bonded to the inner wall of the fixed plate, and a spray pipe movably connected through the interior of the movable plate; an auxiliary plate fixedly connected to the surface of the fixed plate, and a long rod rotatably mounted inside the auxiliary plate, with a fan fixedly connected to the lower surface of the long rod, and a reciprocating assembly between the long rod and the movable plate.

[0007] Preferably, the front view of the fixing plate is an inverted "L" structure, and the fixing plate is rotatably provided with a long pin inside, and the long pin is connected to the connecting shaft through a pulley, and an external plate is fixedly connected to the right end of the long pin.

[0008] Preferably, the lifting assembly includes a limiting post fixedly connected to the inner wall of the fixed plate, a protrusion fixedly connected to the surface of the outer plate, a movable frame sleeved on the surface of the protrusion, a column fixedly connected to the upper surface of the movable frame, and the end of the column fixedly connected to the lower surface of the movable plate.

[0009] Preferably, the limiting post extends through the interior of the movable plate, and the limiting posts are symmetrically distributed on both sides of the movable plate.

[0010] Preferably, the movable plate has a rotating shaft inside, and the cleaning block is fixedly connected to the surface of the rotating shaft, and a gear is fixedly connected to the surface of the rotating shaft.

[0011] Preferably, a rack that meshes with the gear is fixedly connected to the surface of the fixing plate, and a soft brush layer is provided on the lower surface of the cleaning block.

[0012] Preferably, the upper surface of the storage bladder is fixedly connected to a feed pipe, and the side of the storage bladder is fixedly connected to a discharge pipe, and the discharge pipe is connected to the spray pipe through a transition pipe.

[0013] Preferably, a one-way valve is fixedly connected to the surface of both the feed pipe and the discharge pipe, and the end of the spray pipe has a bent structure.

[0014] Preferably, the reciprocating assembly includes a guide rod fixedly connected to the upper surface of the movable plate, and the ends of the guide rod are symmetrically distributed on both sides of the movable plate, and the front of the guide rod is viewed as an inverted "L" structure.

[0015] Preferably, the surface of the long rod is provided with a groove, and the groove corresponds one-to-one with the guide rod, and the end of the guide rod is located inside the groove, and the groove is an inclined annular groove.

[0016] Compared with the prior art, the beneficial effects of this invention are as follows: Adopting a novel structural design, the lifting component allows the cleaning block to reciprocate linearly in the vertical direction, resulting in excellent cleaning performance. Simultaneously, the cleaning block swings with the rotating shaft, expanding the cleaning range and allowing for better removal of impurities. This prevents impurities from accumulating on the locking components of the pressure wheel, ensuring smooth replacement of the pressure wheel by operators. Furthermore, a spray pipe for intermittently spraying lubricating oil reduces wear at the connection points between the locking components and the pressure wheel, extending service life and facilitating pressure wheel replacement. The specific details are as follows:

[0017] 1. In the operation of this replaceable grooved spiral steel pipe mold, the workpiece is placed on the support. At this time, the hydraulic telescopic rod drives the grooved wheel to descend, so that the grooved wheel presses against the workpiece. Then, the support drives the workpiece to rotate, so that the grooved wheel works to groove the workpiece. During this process, the cleaning block makes a reciprocating linear motion in the vertical direction, which can efficiently clean the surface of the grooved wheel through the soft brush layer, preventing the accumulation of impurities on the surface of the grooved wheel, thus preventing the locking part from getting stuck and ensuring smooth replacement of the grooved wheel.

[0018] 2. This replaceable grooved spiral steel pipe mold, when the motor is working, drives the connecting shaft and the grooved wheel to complete the groove forming work. At the same time, the connecting shaft drives the long pin and the outer plate to rotate through the pulley. Then, the outer plate, the protrusion, the movable frame, the column and the limit column cooperate with each other to make the movable plate reciprocate linearly in the vertical direction. At this time, the movable plate will drive the rotating shaft and the cleaning block to move synchronously. During the movement of the rotating shaft, the rotating shaft reciprocates inside the movable plate under the action of gears and racks. At this time, the cleaning block can not only reciprocate linearly in the vertical direction, but also swing with the rotating shaft. Thus, the working range of the soft brush layer is wider and the cleaning effect is better.

[0019] Furthermore, after prolonged use, the pressure wheel can be removed by opening the locking mechanism and replaced. During this process, the sweeping blocks and soft brush layer can also be cleaned, ensuring the working efficiency of the soft brush layer.

[0020] 3. The mold for the replaceable grooved spiral steel pipe, when the movable plate makes reciprocating linear motion in the vertical direction, the movable plate will intermittently squeeze the storage bladder, and then the storage bladder will intermittently supply material to the spray pipe through the discharge pipe and the transition pipe, so that the spray pipe sprays lubricating oil to the connection point of the locking part and the grooved wheel, which plays a role in reducing wear and extending service life.

[0021] Furthermore, when the storage bladder is not compressed, it expands under its own physical properties. At this time, air enters the storage bladder through the feed pipe, which facilitates the next use of the storage bladder. After long-term use, when the lubricating oil inside the storage bladder decreases, material can be added directly through the feed pipe, ensuring the normal use of the storage bladder.

[0022] 4. In the mold for the replaceable grooved spiral steel pipe, during the upward movement of the movable plate, the movable plate drives the guide rod to move synchronously, and the end of the guide rod is located inside the groove. At the same time, the groove is an inclined annular groove, so the long rod rotates in the same direction inside the auxiliary plate under the action of the guide rod and the groove. At this time, the long rod will drive the fan to rotate synchronously, and the fan will play the role of accelerating the rapid removal of impurities and debris. The fan, together with the multi-angle working cleaning block, optimizes the impurity removal effect. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the connection structure between the working board and the equipment box of the present invention;

[0024] Figure 2 This is a schematic diagram of the connection structure between the equipment box and the hydraulic telescopic rod of the present invention;

[0025] Figure 3 This is a schematic diagram of the connection structure between the fixing plate and the motor of the present invention;

[0026] Figure 4 This is a schematic diagram of the cross-sectional structure of the movable plate of the present invention;

[0027] Figure 5 This is a schematic diagram of the connection structure between the long pin and the outer plate of the present invention;

[0028] Figure 6 For the present invention Figure 4 Enlarged structural diagram at point A in the middle;

[0029] Figure 7 This is a schematic diagram of the shaft and gear connection structure of the present invention;

[0030] Figure 8 This is a schematic diagram of the connection structure between the storage bladder and the feed pipe of the present invention;

[0031] Figure 9 This is a schematic diagram of the connection structure between the movable plate and the guide rod of the present invention;

[0032] Figure 10 This is a schematic diagram of the groove distribution structure of the present invention.

[0033] In the diagram: 1. Working plate; 2. Equipment box; 3. Hydraulic telescopic rod; 4. Fixed plate; 5. Motor; 6. Connecting shaft; 7. Grooving wheel; 8. Long pin; 9. External plate; 10. Protrusion; 11. Movable frame; 12. Movable plate; 13. Column; 14. Limiting post; 15. Auxiliary plate; 16. Rack; 17. Rotating shaft; 18. Gear; 19. Cleaning block; 20. Storage bladder; 21. Feed pipe; 22. Discharge pipe; 23. Spray pipe; 24. Long rod; 25. Fan; 26. Guide rod; 27. Groove. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Please see Figures 1-10 The present invention provides the following technical solution: a mold for spiral steel pipe with replaceable pressure groove.

[0036] Example 1: By using the cleaning block 19, which operates at multiple angles, impurities on the surface of the grooved wheel 7 can be cleaned efficiently, preventing the locking parts on the surface of the grooved wheel 7 from being contaminated by impurities. This ensures smooth replacement of the grooved wheel 7. Figures 1-7 As shown, the device includes a work plate 1, a support member on the upper surface of the work plate 1, and an equipment box 2 bolted to the upper surface of the work plate 1. A hydraulic telescopic rod 3 is bolted to the inner wall of the equipment box 2. A fixed plate 4 is fixedly connected to the output end of the hydraulic telescopic rod 3. A motor 5 is bolted to the inner wall of the fixed plate 4, and a connecting shaft 6 is fixedly connected to the output end of the motor 5. A grooved wheel 7 is connected to the surface of the connecting shaft 6 through a locking member, allowing for the replacement of the grooved wheel 7. A movable plate 12 is connected to the fixed plate 4 through a lifting assembly, and a cleaning block 19 is movably connected inside the movable plate 12. The front of the fixed plate 4 is an inverted "L" structure, and a long pin 8 is rotatably provided inside the fixed plate 4. The long pin 8 is connected to the connecting shaft 6 through a pulley, and an external plate 9 is fixedly connected to the right end of the long pin 8.

[0037] The lifting assembly includes a limiting post 14 fixedly connected to the inner wall of the fixed plate 4, a protrusion 10 fixedly connected to the surface of the outer plate 9, a movable frame 11 sleeved on the surface of the protrusion 10, a column 13 fixedly connected to the upper surface of the movable frame 11, and the end of the column 13 fixedly connected to the lower surface of the movable plate 12. The limiting post 14 penetrates the interior of the movable plate 12 and is symmetrically distributed on both sides of the movable plate 12. A rotating shaft 17 is rotatably provided inside the movable plate 12, a cleaning block 19 is fixedly connected to the surface of the rotating shaft 17, and a gear 18 is fixedly connected to the surface of the rotating shaft 17. A rack 16 meshing with the gear 18 is fixedly connected to the surface of the fixed plate 4. A soft brush layer is provided on the lower surface of the cleaning block 19.

[0038] During operation, the workpiece is placed on the support on the upper surface of the work plate 1. At this time, the hydraulic telescopic rod 3 on the inner wall of the fixed plate 4 drives the grooving wheel 7 to descend, so that the grooving wheel 7 presses against the workpiece. Then, the workpiece is rotated through the support, and at the same time, the motor 5 rotates, so that the connecting shaft 6 and the grooving wheel 7 work to groove the workpiece. When the motor 5 is working, the motor 5 drives the connecting shaft 6 to drive the long pin 8 and the outer plate 9 to rotate through the pulley. Then, the outer plate 9 drives the protrusion 10 to rotate synchronously. At this time, the protrusion 10, the movable frame 11, the column 13 and the limiting column 14 cooperate with each other to make the movable plate 12 reciprocate linearly in the vertical direction. At this time, the movable plate 12 will drive the rotating shaft 17 and the cleaning block 19 to move synchronously, that is, the cleaning block 19 reciprocates linearly in the vertical direction. At this time, the working range of the cleaning block 19 increases and the cleaning effect is better.

[0039] During the up-and-down movement of the movable plate 12 and the rotating shaft 17, the rotating shaft 17 reciprocates inside the movable plate 12 under the action of the gear 18 and the rack 16. At this time, the sweeping block 19 can not only make reciprocating linear motion in the vertical direction, but also swing with the rotating shaft 17. As a result, the working range of the soft brush layer is wider and the cleaning effect is better. After long-term use, the pressure wheel 7 can be removed by opening the locking part and replaced. During this process, the sweeping block 19 and the soft brush layer can also be cleaned to ensure the working efficiency of the soft brush layer.

[0040] Example 2: Unlike Example 1, the material storage bladder 20, discharge pipe 22, and spray pipe 23 can lubricate the connection points between the locking component and the pressure roller 7, reducing wear and extending service life. Figure 3 and Figure 8As shown, a storage bladder 20 is bonded to the inner wall of the fixed plate 4, and a spray pipe 23 is movably connected through the interior of the movable plate 12; a feed pipe 21 is fixedly connected to the upper surface of the storage bladder 20, and a discharge pipe 22 is fixedly connected to the side of the storage bladder 20, and the discharge pipe 22 is connected to the spray pipe 23 through a transition pipe. One-way valves are fixedly connected to the surfaces of the feed pipe 21 and the discharge pipe 22, and the end of the spray pipe 23 has a bent structure.

[0041] When the movable plate 12 reciprocates in a vertical direction, the right side of the movable plate 12 intermittently squeezes the storage bladder 20 on the lower surface of the fixed plate 4. When the storage bladder 20 is squeezed, it supplies material to the spray pipe 23 through the discharge pipe 22 and the transition pipe, causing the spray pipe 23 to spray lubricating oil onto the connection points of the locking component and the pressure wheel 7. This reduces wear and extends service life. When the storage bladder 20 is not squeezed, it functions according to its own physical properties. During the expansion, the storage bladder 20 takes in air through the feed pipe 21, facilitating its next use. When the storage bladder 20, feed pipe 21, and spray pipe 23 are working, the one-way valve directs the fluid flow from the storage bladder 20 to the spray pipe 23, preventing backflow and ensuring the stability of the storage bladder 20's operation. Additionally, after prolonged use, when the lubricating oil inside the storage bladder 20 decreases, it can be directly replenished through the feed pipe 21, ensuring the normal operation of the storage bladder 20.

[0042] Example 3: By using the reciprocating assembly, the long rod 24 and the fan 25 can be kept in a state of continuous unidirectional rotation, such as... Figure 9 and Figure 10 As shown, an auxiliary plate 15 is fixedly connected to the surface of the fixed plate 4, and a long rod 24 is rotatably arranged inside the auxiliary plate 15. A fan 25 is fixedly connected to the lower surface of the long rod 24, and a reciprocating assembly is arranged between the long rod 24 and the movable plate 12.

[0043] The reciprocating assembly includes a guide rod 26 fixedly connected to the upper surface of the movable plate 12, and the ends of the guide rod 26 are symmetrically distributed on both sides of the movable plate 12. The front view of the guide rod 26 is an inverted "L" structure. The surface of the long rod 24 is provided with a groove 27, and the groove 27 corresponds one-to-one with the guide rod 26. The end of the guide rod 26 is located inside the groove 27, and the groove 27 is an inclined annular groove.

[0044] As the movable plate 12 rises, it drives the guide rod 26 to move synchronously. The end of the guide rod 26 is located inside the groove 27, which is an inclined annular groove. Therefore, under the action of the guide rod 26 and the groove 27, the long rod 24 rotates in the same direction inside the auxiliary plate 15. At this time, the long rod 24 drives the fan 25 to rotate synchronously, thus the fan 25 plays a role in accelerating the removal of impurities and debris. The fan 25 works in conjunction with the multi-angle cleaning block 19 to optimize the impurity removal effect.

[0045] The above is the entire working process of the device, and all contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0046] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A mold for a replaceable grooved spiral steel pipe, comprising a working plate (1), wherein a support is provided on the upper surface of the working plate (1), and an equipment box (2) is bolted to the upper surface of the working plate (1), and a hydraulic telescopic rod (3) is bolted to the inner wall of the equipment box (2); and a fixing plate (4) is fixedly connected to the output end of the hydraulic telescopic rod (3), characterized in that: A motor (5) is bolted to the inner wall of the fixed plate (4), and a connecting shaft (6) is fixedly connected to the output end of the motor (5). A grooved wheel (7) is connected to the surface of the connecting shaft (6) through a locking member, so as to realize the replacement of the grooved wheel (7). The fixed plate (4) is connected to the movable plate (12) via a lifting assembly, and the movable plate (12) is movably connected to the cleaning block (19). A storage bladder (20) is bonded to the inner wall of the fixed plate (4), and a spray pipe (23) is movably connected through the interior of the movable plate (12). An auxiliary plate (15) is fixedly connected to the surface of the fixed plate (4), and a long rod (24) is rotatably provided inside the auxiliary plate (15). A fan (25) is fixedly connected to the lower surface of the long rod (24), and a reciprocating assembly is provided between the long rod (24) and the movable plate (12).

2. The mold for a replaceable grooved spiral steel pipe according to claim 1, characterized in that: The front view of the fixing plate (4) is an inverted "L" structure, and the inside of the fixing plate (4) is provided with a long pin (8) for rotation. The long pin (8) is connected to the connecting shaft (6) through a pulley, and an outer plate (9) is fixedly connected to the right end of the long pin (8).

3. The mold for a replaceable grooved spiral steel pipe according to claim 2, characterized in that: The lifting assembly includes a limiting post (14) fixedly connected to the inner wall of the fixed plate (4), a protrusion (10) fixedly connected to the surface of the outer plate (9), and a movable frame (11) sleeved on the surface of the protrusion (10), and a column (13) fixedly connected to the upper surface of the movable frame (11), and the end of the column (13) fixedly connected to the lower surface of the movable plate (12).

4. The mold for a replaceable grooved spiral steel pipe according to claim 3, characterized in that: The limiting post (14) penetrates the interior of the movable plate (12), and the limiting post (14) is symmetrically distributed on both sides of the movable plate (12).

5. The mold for a replaceable grooved spiral steel pipe according to claim 1, characterized in that: The movable plate (12) is rotatably provided with a rotating shaft (17), and the cleaning block (19) is fixedly connected to the surface of the rotating shaft (17), and a gear (18) is fixedly connected to the surface of the rotating shaft (17).

6. The mold for a replaceable grooved spiral steel pipe according to claim 5, characterized in that: The surface of the fixing plate (4) is fixedly connected to a rack (16) that meshes with the gear (18), and the lower surface of the cleaning block (19) is provided with a soft brush layer.

7. A mold for a replaceable grooved spiral steel pipe according to claim 1, characterized in that: The upper surface of the storage bladder (20) is fixedly connected to the feed pipe (21), and the side of the storage bladder (20) is fixedly connected to the discharge pipe (22), and the discharge pipe (22) is connected to the spray pipe (23) through the transition pipe.

8. A mold for a replaceable grooved spiral steel pipe according to claim 7, characterized in that: One-way valves are fixedly connected to the surface of the feed pipe (21) and the surface of the discharge pipe (22), and the end of the spray pipe (23) is a bent structure.

9. A mold for a spiral steel pipe with replaceable grooves according to claim 1, characterized in that: The reciprocating assembly includes a guide rod (26) fixedly connected to the upper surface of the movable plate (12), and the ends of the guide rod (26) are symmetrically distributed on both sides of the movable plate (12), and the front of the guide rod (26) is viewed as an inverted "L" structure.

10. A mold for a spiral steel pipe with replaceable grooves according to claim 9, characterized in that: The surface of the long rod (24) is provided with a groove (27), and the groove (27) corresponds one-to-one with the guide rod (26), and the end of the guide rod (26) is located inside the groove (27), and the groove (27) is an inclined annular groove.

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