Cold drawing device for machining small-caliber seamless stainless steel pipe

Abstract

The utility model discloses a cold-drawing device for processing a small-caliber seamless stainless steel pipe, and relates to the technical field of cold drawing of seamless steel pipes, the cold-drawing device for processing the small-caliber seamless stainless steel pipe comprises a base, a forming die is arranged on the top end surface of the base, and a cold-drawing die is arranged on the top end surface of the base. A servo motor B, a transmission assembly B, a guide frame, an adjusting seat, a clamping push rod, a moving plate, a mounting frame and a guide roller are arranged in the guide frame mechanism, so that the small-caliber seamless stainless steel pipe can be accurately guided and clamped in an auxiliary manner in the cold drawing process; the position and the direction of the steel pipe are accurately adjusted, the steel pipe is effectively prevented from being bent due to uneven gravity or drawing force, the straightness and the size precision of the cold-drawn steel pipe are remarkably improved, and the product quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of seamless steel pipe cold drawing technology, specifically a cold drawing device for processing small-diameter seamless stainless steel pipes. Background Technology

[0002] Cold drawing is a material processing technique. For metallic materials, cold drawing refers to drawing the material at room temperature to achieve a specific shape and mechanical properties. Compared to thermoformed products, cold-drawn products have advantages such as higher dimensional accuracy and better surface finish. An existing patent describes a seamless steel pipe cold drawing machine (patent publication number CN202290815U), which includes a frame. The cold drawing machine further includes: a receiving trough with a longitudinal intermittent feeding conveying power device at its upstream end; a trolley track parallel to the receiving trough, on which a cold drawing trolley is mounted, connected to both the cold drawing power device and the trolley travel power device; a drawing die base installed downstream of the receiving trough, with an outer die corresponding to the jaws of the cold drawing trolley; and a tilting feeding device installed downstream of the drawing die base, the tilting frame being driven intermittently by a tilting power device. This is a seamless steel pipe cold drawing machine with high cold drawing efficiency and small longitudinal footprint.

[0003] Regarding the aforementioned technologies, the inventors believe that the following defects exist: although feeding can be achieved using a flipping device, the lack of an effective cold-drawing guide structure makes it easy for long seamless steel pipes to bend due to gravity during the cold-drawing process. Therefore, we propose a cold-drawing device for processing small-diameter seamless stainless steel pipes to solve the above-mentioned problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a cold drawing device for processing small-diameter seamless stainless steel pipes. This device solves the problem that the lack of an effective cold drawing guide structure makes it easy for long seamless steel pipes to bend due to gravity during the cold drawing process.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: A cold drawing device for processing small-diameter seamless stainless steel pipes includes a base, a forming mold mounted on the top surface of the base, a guide frame mechanism fixedly connected to the top surface of the forming mold, a transverse groove opened inside the transverse component of the guide frame mechanism, a servo motor B mounted on the left end of the guide frame mechanism, a transmission component B mounted on the right output shaft of the servo motor B, a guide frame installed inside the transverse groove opened in the guide frame mechanism, a screw hole matching the transmission component B opened inside the guide frame, an adjusting seat fixedly connected to the bottom end of the guide frame, two clamping push rods fixedly connected oppositely inside the longitudinal groove opened at the bottom end of the adjusting seat, a moving plate fixedly connected to the inner side of the clamping push rods, a mounting frame with an opening facing inward fixedly connected to the bottom end of each of the two moving plates, and a guide roller rotatably connected to the inner side of each of the two mounting frames.

[0006] Preferably, a support rod is fixedly connected to the outer side of the guide frame mechanism, and the cross-section of the support rod is a cylindrical structure.

[0007] Preferably, there are two support rods, which are fixedly connected to the front and rear sides of the guide frame mechanism in opposite directions, and the bottom end of the support rod is connected to the top surface of the base.

[0008] Preferably, the base is fixedly connected to four corners of its bottom surface with support legs, and a guide rail is fixedly connected to the inner side of the base, with the guide rail being arranged horizontally.

[0009] Preferably, a servo motor A is mounted on the left side of the base, and a transmission assembly A rotatably connected in the guide rail is mounted on the right output shaft of the servo motor A.

[0010] Preferably, the transmission component A is a lead screw structure, and a movable frame matching the transmission component A is slidably connected inside the guide rail.

[0011] Preferably, the movable frame is internally fixedly connected to a longitudinally arranged hydraulic rod, the bottom end of which is fixedly connected to a clamping block. An arc-shaped groove is provided on the inner side of the clamping block. An installation plate is fixedly connected to the outer side of the forming mold. The installation plate and the forming mold are limited on the base by fixing bolts. A workpiece is inserted into the inside of the forming mold. The workpiece is a seamless steel pipe.

[0012] Beneficial effects

[0013] This invention provides a cold drawing device for processing small-diameter seamless stainless steel tubes. Compared with the prior art, it has the following advantages:

[0014] This cold drawing device for processing small-diameter seamless stainless steel tubes, by incorporating a servo motor B, transmission component B, guide frame, adjusting seat, clamping push rod, moving plate, mounting frame, and guide roller in the guide frame mechanism, can precisely guide and assist in clamping small-diameter seamless stainless steel tubes during the cold drawing process. It accurately adjusts the position and orientation of the steel tube, effectively preventing the steel tube from bending due to gravity or uneven drawing force, significantly improving the straightness and dimensional accuracy of the cold-drawn steel tube, and enhancing product quality.

[0015] This cold drawing device for processing small-diameter seamless stainless steel pipes features a cylindrical cross-section design with support rods fixed to the outside of the guide frame mechanism. This design provides excellent mechanical properties and balanced force distribution, ensuring reliable support for the guide frame mechanism. Simultaneously, two support rods are fixed to the front and rear sides of the guide frame mechanism and connected to the base, further enhancing the stability of the guide frame mechanism, reducing shaking and displacement during operation, ensuring equipment stability, and extending the equipment's service life. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the axial side view of the cold drawing device of this utility model;

[0017] Figure 2 This is a schematic diagram of the combined structure of the adjusting seat and clamping push rod of the cold drawing device of this utility model;

[0018] Figure 3 This is a top view of the cold drawing device of this utility model;

[0019] Figure 4 This is a schematic diagram of the left side of the cold drawing device of this utility model;

[0020] Figure 5 This is a schematic diagram of the forming mold structure after the cold drawing device of this utility model has been cut;

[0021] Figure 6 This is a schematic diagram of the combined structure of the moving frame and hydraulic rod of the cold drawing device of this utility model.

[0022] In the diagram: 1. Base; 101. Support leg; 1011. Guide rail; 1012. Forming mold; 1013. Mounting plate; 1014. Fixing bolt; 1015. Workpiece; 2. Servo motor A; 201. Transmission component A; 2011. Moving frame; 2012. Hydraulic rod; 2013. Clamping block; 3. Guide frame mechanism; 301. Servo motor B; 3011. Transmission component B; 3012. Guide frame; 3013. Adjusting seat; 3014. Clamping push rod; 3015. Moving plate; 3016. Mounting frame; 3017. Guide roller; 302. Support rod. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-6 This utility model provides a technical solution: a cold drawing device for processing small-diameter seamless stainless steel pipes, including a base 1, a forming mold 1012 mounted on the top surface of the base 1, a guide frame mechanism 3 fixedly connected to the top surface of the forming mold 1012, a transverse groove opened inside the transverse component of the guide frame mechanism 3, a servo motor B301 mounted on the left end of the guide frame mechanism 3, a transmission component B3011 mounted on the right output shaft of the servo motor B301, and a guide frame 30 inside the transverse groove opened in the guide frame mechanism 3. 12. The guide frame 3012 has a screw hole that matches the transmission component B3011. An adjustment seat 3013 is fixedly connected to the bottom end of the guide frame 3012. Two clamping push rods 3014 are fixedly connected to each other in the longitudinal groove at the bottom end of the adjustment seat 3013. A moving plate 3015 is fixedly connected to the inner side of the clamping push rod 3014. The bottom ends of the two moving plates 3015 are fixedly connected to the mounting brackets 3016 with the opening facing inward. Guide rollers 3017 are rotatably connected to the inner side of the two mounting brackets 3016.

[0025] By incorporating a servo motor B301, transmission assembly B3011, guide frame 3012, adjustment seat 3013, clamping push rod 3014, moving plate 3015, mounting frame 3016, and guide roller 3017 within the guide frame mechanism 3, the steel pipe can be guided and assisted in clamping during the cold drawing process of small-diameter seamless stainless steel pipes. This allows for precise adjustment of the position and direction of the steel pipe during cold drawing, ensuring the smooth progress of the cold drawing process.

[0026] See Figure 1 , Figure 5 A support rod 302 is fixedly connected to the outside of the guide frame mechanism 3. The cross-section of the support rod 302 is a cylindrical structure.

[0027] The support rod 302, which is fixed to the outside of the guide mechanism 3, has a cylindrical cross-section design. This design enhances the stability of the guide mechanism 3 while ensuring good mechanical properties and force balance, providing more reliable support for the cold drawing device.

[0028] See Figure 2 , Figure 4There are two support rods 302, which are fixedly connected to the front and rear sides of the guide frame mechanism 3 in opposite directions. The bottom end of the support rod 302 is connected to the top surface of the base 1.

[0029] By using two support rods 302 that are fixed to the front and rear sides of the guide frame mechanism 3 and whose bottom ends are connected to the base 1, the stability of the guide frame mechanism 3 is further improved, enabling it to better withstand the force generated during the cold drawing of the steel pipe and effectively reduce the shaking and displacement of the device during operation.

[0030] See Figure 2 , Figure 5 The base 1 has four fixed feet 101 at the four corners of its bottom surface, and a guide rail 1011 is fixedly connected to the inner side of the base 1. The guide rail 1011 is arranged horizontally.

[0031] The base 1 has four corner supports 101 at its bottom end to act as a support device. The guide rail 1011 is arranged laterally on the inner side to provide a motion track for the transmission component A201 and the moving frame 2011, ensuring the stable movement of the relevant components. It is the basic support and motion guidance structure for the operation of the entire device.

[0032] See Figure 4 , Figure 6 A servo motor A2 is mounted on the left side of the base 1, and a transmission assembly A201 rotatably connected to the guide rail 1011 is mounted on the right output shaft of the servo motor A2.

[0033] The servo motor A2 on the left side of the base 1 and the transmission assembly A201 on the right output shaft provide power to the moving frame 2011, enabling the moving frame 2011 to move on the guide rail 1011 in a preset manner. This provides a key power source for the cold drawing operation and determines the operation mode of some parts of the device.

[0034] See Figure 1 , Figure 2 The transmission component A201 is a lead screw structure, and the guide rail 1011 has a sliding connection inside which a movable frame 2011 that matches the transmission component A201 is slidably connected.

[0035] By designing the transmission component A201 as a lead screw structure to match the moving frame 2011, the rotational motion of the servo motor A2 can be accurately converted into the linear motion of the moving frame 2011, thereby achieving precise control of the position of the moving frame 2011 and improving the accuracy of cold drawing.

[0036] See Figure 3 , Figure 4The movable frame 2011 has a longitudinally arranged hydraulic rod 2012 fixedly connected inside. The bottom end of the hydraulic rod 2012 is fixedly connected to a clamping block 2013. The inner side of the clamping block 2013 is provided with an arc-shaped groove. The outer side of the forming mold 1012 is fixedly connected to an installation plate 1013. The installation plate 1013 and the forming mold 1012 are limited on the base 1 by a fixing bolt 1014. The forming mold 1012 has a workpiece 1015 inserted inside. The workpiece 1015 is a seamless steel pipe.

[0037] The workpiece 1015 is clamped by the hydraulic rod 2012 inside the movable frame 2011 and the clamping block 2013 at the bottom. The arc groove on the inner side of the clamping block 2013 fits tightly with the steel pipe and works in conjunction with the forming mold 1012 and other components to complete the cold drawing operation of the seamless steel pipe. It is the key execution structure for realizing the cold drawing process.

[0038] During operation, the small-diameter seamless stainless steel pipe to be processed (workpiece 1015) is first inserted into the forming mold 1012. The forming mold 1012 is securely installed on the base 1 by the mounting plate 1013 and the fixing bolt 1014, ensuring that the mold position is fixed during the cold drawing process and providing precise shape constraints for the forming of the steel pipe.

[0039] When the servo motor A2 is started, its right output shaft drives the transmission component A201 to rotate. Since the transmission component A201 is a lead screw structure and is matched with the movable frame 2011 inside the guide rail 1011, the movable frame 2011 moves smoothly along the horizontally set guide rail 1011 under the action of the lead screw transmission. When the movable frame 2011 moves to the appropriate position, the hydraulic rod 2012 inside the movable frame 2011 is activated. The hydraulic rod 2012 extends and pushes the clamping block 2013 at the bottom end to move downward. The arc groove on the inner side of the clamping block 2013 fits tightly against the seamless steel pipe, realizing a stable clamping of the steel pipe.

[0040] Based on the length, curvature, and cold drawing process requirements of the steel pipe, the servo motor B301 is started. The right output shaft of the servo motor B301 drives the transmission component B3011 to rotate. The transmission component B3011 engages with the screw hole inside the guide frame 3012, causing the guide frame 3012 to move left and right in the transverse groove of the guide frame mechanism 3. When the guide frame 3012 moves, it drives the adjustment seat 3013 fixed at the bottom to move synchronously. The clamping push rod 3014 at the bottom of the adjustment seat 3013 will adjust its position according to the movement of the guide frame 3012, thereby causing the moving plate 3015 and the mounting frame 3016 to move, and finally adjusting the position of the guide roller 3017 so that it contacts the surface of the steel pipe and provides appropriate support and guiding force.

[0041] After completing the above preparations, the servo motor A2 is started to drive the transmission component A201 to rotate. The transmission component A201 is connected to the moving frame 2011 to pull the workpiece 1015. Under the action of cold drawing force, the steel pipe is pulled in the forming mold 1012 and gradually changes its shape. During the pulling process, the guide roller 3017 rotates with the movement of the steel pipe to provide rolling friction for the steel pipe, reduce the damage of friction force to the surface of the steel pipe, and continuously guide the steel pipe to maintain straight movement to prevent it from bending due to gravity or uneven pulling force.

[0042] In summary, this device, through the setting of the forming mold 1012, can achieve rapid drawing forming operations.

[0043] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

Claims

1. A cold drawing device for processing small-diameter seamless stainless steel pipes, comprising a base (1), wherein a forming mold (1012) is mounted on the top surface of the base (1), and a guide mechanism (3) is fixedly connected to the top surface of the forming mold (1012), characterized in that: The guide frame mechanism (3) has a transverse groove inside its transverse component. A servo motor B (301) is installed at the left end of the guide frame mechanism (3). A transmission assembly B (3011) is installed on the right output shaft of the servo motor B (301). A guide frame (3012) is installed inside the transverse groove in the guide frame mechanism (3). The guide frame (3012) has a screw hole inside that matches the transmission assembly B (3011). An adjusting seat (3013) is fixedly connected to the bottom end. Two clamping push rods (3014) are fixedly connected to each other inside the longitudinal groove opened at the bottom end of the adjusting seat (3013). A moving plate (3015) is fixedly connected to the inner side of the clamping push rod (3014). The bottom ends of the two moving plates (3015) are fixedly connected to the mounting brackets (3016) with the opening facing inward. Guide rollers (3017) are rotatably connected to the inner side of the two mounting brackets (3016).

2. The cold drawing device for processing small-diameter seamless stainless steel pipes according to claim 1, characterized in that: The outer side of the guide frame mechanism (3) is fixedly connected to a support rod (302), and the cross section of the support rod (302) is a cylindrical structure.

3. The cold drawing device for processing small-diameter seamless stainless steel pipes according to claim 2, characterized in that: There are two support rods (302), which are fixedly connected to the front and rear sides of the guide frame mechanism (3) in opposite directions. The bottom end of the support rod (302) is connected to the top surface of the base (1).

4. The cold drawing device for processing small-diameter seamless stainless steel pipes according to claim 3, characterized in that: The base (1) has four fixed feet (101) at the bottom corners, and a guide rail (1011) is fixedly connected to the inner side of the base (1). The guide rail (1011) is arranged horizontally.

5. A cold drawing device for processing small-diameter seamless stainless steel pipes according to claim 4, characterized in that: A servo motor A (2) is mounted on the left side of the base (1), and a transmission assembly A (201) is mounted on the right output shaft of the servo motor A (2) and is rotatably connected in the guide rail (1011).

6. A cold drawing apparatus for processing small-diameter seamless stainless steel pipes according to claim 5, characterized in that: The transmission component A (201) is a lead screw structure, and the guide rail (1011) is internally slidably connected to a movable frame (2011) that matches the transmission component A (201).

7. A cold drawing apparatus for processing small-diameter seamless stainless steel pipes according to claim 6, characterized in that: The movable frame (2011) is internally fixedly connected to a longitudinally arranged hydraulic rod (2012). The bottom end of the hydraulic rod (2012) is fixedly connected to a clamping block (2013). The inner side of the clamping block (2013) is provided with an arc-shaped groove. The outer side of the forming mold (1012) is fixedly connected to an installation plate (1013). The installation plate (1013) and the forming mold (1012) are limited on the base (1) by fixing bolts (1014). The forming mold (1012) is internally inserted with a workpiece (1015), which is a seamless steel pipe.

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