Galvanized steel pipe automatic straightening machine capable of reducing galvanized layer damage

Abstract

The utility model relates to the technical field of steel pipe straightening, in particular to an automatic galvanized steel pipe straightening machine capable of reducing damage of a galvanized layer, which is used for straightening a bent steel pipe and comprises a main machine body and a plurality of straightening devices arranged at the top of the main machine body and used for straightening the steel pipe. The straightening device comprises a transverse straightener and longitudinal straighteners arranged on the two sides of the transverse straightener, the longitudinal straighteners and the transverse straightener are the same in structure, each longitudinal straightener comprises longitudinal straightening rollers which are symmetrically arranged, the transverse straightener comprises transverse straightening rollers which are symmetrically arranged, and the longitudinal straightening rollers and the transverse straightening rollers are symmetrically arranged. The longitudinal straightening rollers and the transverse straightening rollers are sleeved with scratch-proof assemblies used for preventing zinc coatings on the steel pipes from being damaged, and the longitudinal straightener and the transverse straightener further comprise driving mechanisms used for driving the longitudinal straightening rollers and the transverse straightening rollers to rotate. Due to the fact that the flexible protective sleeve is arranged outside the straightening roll in the sleeved mode, the problem that a zinc coating on the surface of a steel pipe is prone to being damaged by a traditional device is solved.

Description

Technical Field

[0001] This utility model relates to the field of steel pipe straightening technology, specifically to an automatic straightening machine for galvanized steel pipes that reduces damage to the galvanized layer. Background Technology

[0002] Galvanized steel pipe, also known as zinc-plated pipe, is a type of pipe that enhances its corrosion resistance by coating the surface of the steel pipe with a layer of zinc. The zinc coating can effectively resist the atmosphere, water and other corrosive media, allowing the steel pipe to maintain a long service life in various environments. Galvanized steel pipes need to be straightened during production.

[0003] Chinese patent CN212494637U discloses a steel pipe straightening machine, relating to the technical field of steel pipe straightening equipment. The machine includes a base with two opposing cooling devices and a straightening device mounted on it. The straightening device includes a base plate with a top plate on it. Multiple lower straightening rollers are rotatably mounted on the base plate, and multiple upper straightening rollers with rotatable angles are vertically mounted on the top plate. The lower and upper straightening rollers correspond vertically. Multiple straightening motors are fixed to the base. The cooling device includes a chain rotatably mounted on the base plate with a cooling column fixed to it. A rotatable nozzle is mounted on one side of the cooling column, and a cooling motor is fixed to the base plate.

[0004] In the above structure, the steel pipe is clamped by two sets of straightening rollers when straightening the steel pipe. The steel pipe is straightened by the rotation of the straightening rollers. The two sets of straightening rollers are at a certain angle, so that the steel pipe can rotate when the straightening rollers rotate, and straighten it in all directions. However, when the steel pipe rotates between the two sets of straightening rollers, the friction between the steel pipe and the straightening rollers is too great, which can easily lead to damage to the galvanized layer on the surface of the steel pipe. Utility Model Content

[0005] The purpose of this invention is to provide an automatic straightening machine for galvanized steel pipes that reduces damage to the galvanized layer. By using a flexible protective sleeve on the outside of the straightening roller, the problem of damage to the galvanized layer on the surface of the steel pipe caused by traditional devices is solved.

[0006] To address the problems of existing technologies, this utility model provides an automatic straightening machine for galvanized steel pipes that reduces damage to the galvanized layer. It is used to straighten bent steel pipes and includes a main body and several straightening devices installed on the top of the main body for straightening the steel pipes. Each straightening device includes a transverse straightener and longitudinal straighteners arranged on both sides of the transverse straightener. The longitudinal straighteners and transverse straighteners have the same structure. The longitudinal straightener includes symmetrically arranged longitudinal straightening rollers, and the transverse straightener includes symmetrically arranged transverse straightening rollers. The longitudinal and transverse straightening rollers are fitted with anti-scratch components to prevent damage to the galvanized layer on the steel pipe. The longitudinal and transverse straighteners also include a drive mechanism for rotating the longitudinal and transverse straightening rollers.

[0007] Preferably, the anti-scratch component includes a first flexible protective sleeve and a second flexible protective sleeve, which are semi-circular cylindrical in shape. The first and second flexible protective sleeves can be spliced ​​together to form a circle and fitted onto the longitudinal straightening roller and the transverse straightening roller.

[0008] Preferably, the first flexible protective sleeve and the second flexible protective sleeve are fixed with clips on both sides, and the clips are screwed with fixing bolts for fixing the first flexible protective sleeve and the second flexible protective sleeve.

[0009] Preferably, the first flexible protective sleeve and the second flexible protective sleeve are made of rubber material.

[0010] Preferably, the first flexible protective sleeve and the second flexible protective sleeve are made of plastic material.

[0011] Preferably, the straightening device includes a support frame with a groove. Both ends of the longitudinal straightening roller and the transverse straightening roller are slidably disposed in the groove. A slider corresponding to the longitudinal straightening roller and the transverse straightening roller is slidably disposed in the groove. The longitudinal straightening roller and the transverse straightening roller are rotatably disposed on the slider.

[0012] Preferably, the straightening device includes a synchronous moving component that synchronously drives the longitudinal straightening roller and the transverse straightening roller to move closer or further apart from each other, and a driving component that drives the synchronous moving component to operate.

[0013] Preferably, the synchronous movement component includes a drive pulley and a rack, the drive pulley and the rack meshing with each other; the drive component includes a worm gear, the worm gear and the drive pulley are coaxially connected; the drive component includes a rotary drive and a worm, the output end of the rotary drive is fixedly connected to one end of the worm, and the worm and the worm gear mesh with each other.

[0014] Compared with the prior art, the beneficial effects of this utility model are: the automatic straightening machine for galvanized steel pipes that reduces damage to the galvanized layer has a reasonable structure and the following advantages:

[0015] (1) In this application, a flexible protective sleeve is provided on the conventional straightening roller. The flexible protective sleeve is made of rubber or plastic, which reduces the friction between the straightening roller and the steel pipe, thereby reducing the damage to the galvanized layer of the steel pipe.

[0016] (2) This application uses two sets of detachable flexible protective sleeves. The flexible protective sleeves are adapted to the straightening rollers. The first and second flexible protective sleeves can be separated simply by removing the fixing bolts on the clips. When the flexible protective sleeves are damaged, they can be easily replaced.

[0017] (3) This application uses longitudinally and laterally arranged straightening rollers to constrain the steel pipe to the center position of the straightening machine, ensuring the precise position and stable movement of the steel pipe during the straightening process. This helps to reduce the deviation and sway of the steel pipe and improve the straightening accuracy and efficiency. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of an automatic straightening machine for galvanized steel pipes that reduces damage to the galvanized layer.

[0019] Figure 2 This is a first structural schematic diagram of a straightening device for an automatic straightening machine for galvanized steel pipes that reduces damage to the galvanized layer.

[0020] Figure 3 This is a second structural schematic diagram of a straightening device for an automatic straightening machine for galvanized steel pipes that reduces damage to the galvanized layer.

[0021] Figure 4 This is a three-dimensional structural diagram of the transverse straightener of an automatic straightening machine for galvanized steel pipes that reduces damage to the galvanized layer.

[0022] Figure 5 This is a three-dimensional structural diagram of the anti-scratch component of an automatic straightening machine for galvanized steel pipes that reduces damage to the galvanized layer.

[0023] Figure 6 This is a three-dimensional structural diagram of the transverse straightener of an automatic straightening machine for galvanized steel pipes that reduces damage to the galvanized layer, after removing the anti-scratch component.

[0024] The following components are labeled in the diagram: 1. Main body; 11. Straightening device; 111. Longitudinal straightener; 1111. Longitudinal straightening roller; 112. Transverse straightener; 1121. Transverse straightening roller; 113. Drive assembly; 1131. Rotary drive component; 1132. Worm gear; 1133. Worm wheel; 114. Synchronous movement assembly; 1141. Drive pulley; 1142. Rack; 115. Anti-scratch assembly; 1151. First flexible protective sleeve; 1152. Second flexible protective sleeve; 1153. Clamping device; 1154. Fixing bolt; 116. Support frame; 1161. Slide groove; 117. Slider. Detailed Implementation

[0025] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0026] Reference Figures 1-6As shown, this utility model provides: an automatic straightening machine for galvanized steel pipes to reduce damage to the galvanized layer, used to straighten bent steel pipes. It includes a main body 1 and several straightening devices 11 installed on the top of the main body 1 for straightening the steel pipes. The number of straightening devices 11 is determined according to actual needs to ensure that the steel pipe is subjected to straightening force comprehensively and uniformly. Each straightening device 11 includes a transverse straightener 112 and longitudinal straighteners 111 arranged on both sides of the transverse straightener 112. The longitudinal straighteners 111 and transverse straighteners 112 have the same structure. The longitudinal straightener 111 includes symmetrically arranged longitudinal straightening rollers 1111, and the transverse straightener 112 includes symmetrically arranged transverse straightening rollers 1121. The longitudinal straighteners 1111 and transverse straighteners 1121 are fitted with anti-scratch components 115 to prevent damage to the galvanized layer on the steel pipe. The anti-scratch components 115 are typically made of soft materials or materials with special surface properties to reduce friction and scratches when in direct contact with the steel pipe. The longitudinal straightener 111 and the transverse straightener 112 also include drive mechanisms (not shown in the figure) for driving the longitudinal straightening roller 1111 and the transverse straightening roller 1121 to rotate. The drive mechanism can be an electric motor, a hydraulic motor, or other form of power source, which transmits power to the straightening rollers through a transmission device (such as gears, chains, or belts). When the drive mechanism is activated, the straightening rollers begin to rotate and apply a straightening force through contact with the steel pipe. This force gradually straightens the steel pipe to the desired shape and size.

[0027] During the straightening process, the bent steel pipe is fed into the straightening device 11 and subjected to the synergistic action of the longitudinal straightener 111 and the transverse straightener 112. The steel pipe is straightened by the longitudinal straightener 111 and the transverse straightener 112 to eliminate its bending in the longitudinal and transverse directions. By continuously adjusting the rotation speed and pressure of the straightening rollers, the steel pipe can be accurately straightened.

[0028] The anti-scratch component 115 includes a first flexible protective sleeve 1151 and a second flexible protective sleeve 1152. Both the first and second flexible protective sleeves are semi-circular cylindrical in shape. They can be joined together to form a circle and fitted onto the longitudinal straightening roller 1111 and the transverse straightening roller 1121. Clips 1153 are fixed to both sides of the first and second flexible protective sleeves 1151 and 1152, and fixing bolts 1153 are screwed onto the clips 1153 to secure the first and second flexible protective sleeves 1151 and 1152. 154. When the first flexible protective sleeve 1151 and the second flexible protective sleeve 1152 are spliced ​​together, they can form a complete circle and fit tightly on the straightening roller. To ensure that the two protective sleeves can be firmly spliced ​​and held on the straightening roller, both sides of the first flexible protective sleeve 1151 and the second flexible protective sleeve 1152 are fixed with clips 1153. The design of the clips 1153 allows them to align with each other and fit tightly, thereby enhancing the stability of the protective sleeves. Fixing bolts 1154 are screwed on the clips 1153. The fixing bolts 1154 are tightened to firmly fix the two protective sleeves together.

[0029] The first flexible protective sleeve 1151 and the second flexible protective sleeve 1152 are made of rubber material.

[0030] The rubber material is soft and elastic, which allows it to fit tightly against the surface of the straightening roller, providing uniform protection. When the steel pipe passes through the straightening roller, the flexible protective sleeve can absorb and disperse the straightening force, reducing the risk of direct impact and scratches on the galvanized layer.

[0031] The first flexible protective sleeve 1151 and the second flexible protective sleeve 1152 are made of plastic material. Plastic material has good stability against a variety of chemicals and also reduces the risk of direct impact and scratches on the galvanized layer.

[0032] The straightening device 11 includes a support frame 116, and a groove 1161 is provided on the support frame 116. Both ends of the longitudinal straightening roller 1111 and the transverse straightening roller 1121 are slidably disposed in the groove 1161. A slider 117 corresponding to the longitudinal straightening roller 1111 and the transverse straightening roller 1121 is slidably disposed in the groove 1161. The longitudinal straightening roller 1111 and the transverse straightening roller 1121 are rotatably disposed on the slider 117. The longitudinal straightening roller 1111 and the transverse straightening roller 1121 are respectively disposed in the longitudinal and transverse positions of the support frame 116 for straightening the steel pipe. A straightening force is applied by rotation, so that the steel pipe gradually returns to the required straight shape.

[0033] The straightening device 11 includes a synchronous moving component 114 that synchronously drives the longitudinal straightening roller 1111 and the transverse straightening roller 1121 to move closer or further apart, and a driving component 113 that drives the synchronous moving component 114 to run. The synchronous moving component 114 includes a drive pulley 1141 and a rack 1142, with the drive pulley 1141 and the rack 1142 meshing with each other. The driving component 113 includes a worm gear 1133, which is coaxially connected to the drive pulley 1141. The driving component 113 includes a rotary drive member 1131 and a worm 1132, with the output end of the rotary drive member 1131 fixedly connected to one end of the worm 1132, and the worm 1132 and the worm gear 1133 meshing with each other.

[0034] The drive pulley 1141 is one of the core components of the synchronous movement assembly 114. It meshes with the rack 1142 and drives the rack 1142 to move horizontally by rotating. When the drive pulley 1141 rotates, the rack 1142 moves along its length, thereby bringing the longitudinal straightening roller 1111 and the transverse straightening roller 1121 closer to the outside of the clamping steel pipe.

[0035] When it is necessary to adjust the distance between the longitudinal straightening roller 1111 and the transverse straightening roller 1121, the rotary drive 1131 starts working, driving the worm gear 1132 to rotate. The rotation of the worm gear 1132 drives the worm wheel 1133 to rotate. Since the worm wheel 1133 is coaxially connected to the drive pulley 1141, the drive pulley 1141 will also rotate. The rotation of the drive pulley 1141 drives the rack 1142 to move in the horizontal direction, thereby driving the support structure of the longitudinal straightening roller 1111 and the transverse straightening roller 1121 to move, so that the straightening rollers move closer or further apart. By adjusting the output speed and direction of the rotary drive 1131, the moving distance and speed of the straightening rollers can be precisely controlled to adapt to steel pipes of different diameters and degrees of curvature.

[0036] Working principle: In use, the steel pipe is passed through the straightening machine. By activating the rotary drive 1131, the worm gear 1132 rotates, which in turn rotates the worm wheel 1133. The worm wheel 1133 rotates the drive pulley 1141, which in turn moves the rack 1142. This causes the two symmetrical longitudinal straightening rollers 1111 and the transverse straightening roller 1121 to move closer together, constraining the steel pipe to the center of the straightening machine. When the longitudinal straightening rollers 1111 and the transverse straightening rollers 1121 rotate, the steel pipe is straightened. The straightening rollers are fitted with flexible protective sleeves made of rubber or plastic, which reduce the friction between the straightening rollers and the steel pipe, thereby reducing the loss of the galvanized layer of the steel pipe. When the flexible protective sleeve is damaged, the first flexible protective sleeve 1151 and the second flexible protective sleeve 1152 can be separated simply by removing the fixing bolts 1154 on the clamp 1153. The flexible protective sleeves can be easily replaced when damaged.

[0037] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A galvanized steel pipe automatic straightening machine for reducing damage to a galvanized layer of a galvanized steel pipe for straightening a bent steel pipe, characterized by: The utility model relates to a straightening device for straightening steel pipe, which comprises a main body (1) and a plurality of straightening devices (11) installed on the top of the main body (1), wherein each straightening device (11) comprises a transverse straightener (112) and a longitudinal straightener (111) arranged on both sides of the transverse straightener (112), the longitudinal straightener (111) and the transverse straightener (112) have the same structure, the longitudinal straightener (111) comprises symmetrically arranged longitudinal straightening rollers (1111), the transverse straightener (112) comprises symmetrically arranged transverse straightening rollers (1121), the longitudinal straightening rollers (1111) and the transverse straightening rollers (1121) are externally sleeved with scratch-proof components (115) for avoiding damage to the galvanized layer on the steel pipe, and the longitudinal straightener (111) and the transverse straightener (112) further comprise driving mechanisms for driving the longitudinal straightening rollers (1111) and the transverse straightening rollers (1121) to rotate.

2. The galvanized steel pipe automatic straightening machine for reducing damage to the galvanized layer according to claim 1, characterized in that: The scratch-proof components (115) comprise first flexible protective sleeves (1151) and second flexible protective sleeves (1152), the first flexible protective sleeves (1151) and the second flexible protective sleeves (1152) are semicircular cylinders, and the first flexible protective sleeves (1151) and the second flexible protective sleeves (1152) can be spliced into a circular shape and sleeved on the longitudinal straightening rollers (1111) and the transverse straightening rollers (1121).

3. A galvanized steel pipe automatic straightening machine for reducing damage to a galvanized layer according to claim 2, characterized in that: The first flexible protective sleeves (1151) and the second flexible protective sleeves (1152) are fixed with clamping pieces (1153) on both sides, and the clamping pieces (1153) are screwed with fixing bolts (1154) for fixing the first flexible protective sleeves (1151) and the second flexible protective sleeves (1152).

4. The galvanized steel pipe automatic straightening machine for reducing damage to the galvanized layer according to claim 3, characterized in that: The first flexible protective sleeves (1151) and the second flexible protective sleeves (1152) are made of rubber material.

5. The automatic straightening machine for galvanized steel pipes according to claim 3, characterized in that: The first flexible protective sleeves (1151) and the second flexible protective sleeves (1152) are made of plastic material.

6. The automatic straightening machine for galvanized steel pipes according to claim 1, characterized in that: The straightening device (11) comprises a support frame (116), and the support frame (116) is provided with sliding grooves (1161), both ends of the longitudinal straightening rollers (1111) and the transverse straightening rollers (1121) are slidingly arranged in the sliding grooves (1161), sliding blocks (117) corresponding to the longitudinal straightening rollers (1111) and the transverse straightening rollers (1121) are slidingly arranged in the sliding grooves (1161), and the longitudinal straightening rollers (1111) and the transverse straightening rollers (1121) are rotatably arranged on the sliding blocks (117).

7. The automatic straightening machine for galvanized steel pipes according to claim 1, characterized in that: The straightening device (11) comprises a synchronous movement assembly (114) for synchronously driving the longitudinal straightening rollers (1111) and the transverse straightening rollers (1121) to move close to or away from each other and a driving assembly (113) for driving the synchronous movement assembly (114) to operate.

8. The galvanized steel pipe automatic straightening machine for reducing damage to the galvanized layer according to claim 7, characterized in that: The synchronous moving assembly (114) comprises a driving pulley (1141) and a rack (1142), the driving pulley (1141) is engaged with the rack (1142), the driving assembly (113) comprises a worm wheel (1133), the worm wheel (1133) and the driving pulley (1141) are coaxially connected, the driving assembly (113) comprises a rotary driving part (1131) and a worm (1132), the output end of the rotary driving part (1131) is fixedly connected with one end of the worm (1132), and the worm (1132) is engaged with the worm wheel (1133).

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