Automatic threading machine

Abstract

The utility model provides an automatic die head threading machine. The automatic die head threading machine comprises a driving assembly, a chain wheel assembly and a propelling assembly. The driving assembly and the crankset assembly are coaxially arranged on the supporting table top, and the propelling assembly is installed at the end, away from the driving assembly, of the supporting table top; through cooperation of the electromagnetic valve and the air cylinder, automatic control over the threading process is achieved, tedious steps of manual operation are reduced, and work efficiency is improved. And through precise control of the limiting stopper and the control assembly, the precision and consistency of thread machining are ensured, and errors in manual operation are avoided. Manual intervention is reduced through automatic operation, potential safety hazards in the operation process are reduced, and the safety of workers is guaranteed; the threading process can be completed only by putting the pipe into the chuck and starting the switch, and the threading device is simple to operate and easy to master.

Description

Technical Field

[0001] This utility model relates to an automatic threading machine. Background Technology

[0002] Existing threading machines are generally manually operated. During use, the pipe must be manually fixed on a stable workbench, ensuring sufficient material is left at one end for threading. A threading head matching the pipe size is installed on the ratchet handle, and then the threading machine is connected to the pipe. The operator pushes the ratchet handle of the threading head with one hand, rotating it clockwise, following the direction of the right-hand thread. If the die does not fit tightly against the pipe during threading, the die opening size can be adjusted or the die replaced. The threading process stops when the distance between the edge of the pipe and the end of the die reaches the preset length, or when the die is fully engaged. The threading head is then removed from the pipe, possibly using a hammer disc for assistance. After completion, the power is turned off, the pipe is removed, and necessary cleaning and maintenance are performed. Clearly, this process demonstrates the complexity, time-consuming nature, and significant safety hazards involved in threading. Relying on manual operation results in inconsistent precision control and a lack of uniformity in the threaded threads. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides an automatic threading machine.

[0004] This utility model is achieved through the following technical solution.

[0005] The present invention provides an automatic threading machine, comprising a drive assembly, a toothed disc assembly, and a propulsion assembly; the drive assembly and the toothed disc assembly are coaxially disposed on a support platform, and the propulsion assembly is installed on the support platform at the end away from the drive assembly;

[0006] The drive assembly includes a chuck and a clamping motor. The chuck is installed in a chuck drive box, and a main motor connected to the chuck is located in the chuck drive box. A clamping plate is installed outside the chuck. The clamping motor is mounted on the chuck drive box via a clamping motor bracket. A pulley is installed on the shaft of the clamping motor, and the pulley is connected to the clamping plate via a belt.

[0007] The toothed plate assembly includes a toothed plate, with a sliding sleeve fixed at each end of the toothed plate. The two sliding sleeves are connected by a toothed plate mounting bridge and are respectively mounted on a guide rod. A die head is also installed on the toothed plate to control the tension of the threads. A pressure rod is installed on the end of the die head relative to the chuck.

[0008] The propulsion assembly includes a propulsion cylinder, which is mounted on a support platform and its push rod is connected to the gear plate mounting bridge.

[0009] It also includes control components.

[0010] The control assembly includes a propulsion cylinder return switch, a lifting cylinder, a propulsion cylinder control switch, a limit switch, and a main motor control switch. The propulsion cylinder return switch and the propulsion cylinder control switch are both mounted on the same sliding sleeve. A limit groove is machined inside the sliding sleeve and between the propulsion cylinder return switch and the propulsion cylinder control switch. The limit switch is installed in the limit groove and its bottom contacts the top of the guide rod. A cylindrical groove is machined in the side wall of the limit groove adjacent to one end of the propulsion assembly. A compression spring is installed in the cylindrical groove and connected to the limit switch. The limit groove is below the die head and its length is 1.5 to 1.8 times that of the limit switch.

[0011] The main motor control switch is obliquely mounted on the side of the propulsion cylinder, and its spring contact rod is placed at the starting point of the sliding sleeve stroke;

[0012] The lifting cylinder is vertically fixed to the side of the sliding sleeve, and a push plate is installed on the top of the push rod of the lifting cylinder. The push plate is positioned directly below the limiter.

[0013] Limiting teeth are machined on the top of the guide rod and the bottom of the limiter.

[0014] One end of the guide rod is connected to the chuck drive box, and the other end is connected to the support plate. The bottom of the support plate is fixed to the edge of the support platform.

[0015] The two guide rods are at the same height and are parallel to the axis of the drive assembly and the chainring assembly.

[0016] The clamp is equipped with a toothed disc, which is mounted on the clamp via bearings. The side of the toothed disc has a spiral groove that engages with the jaws.

[0017] The propulsion cylinder is mounted on the edge of the support platform via a bracket, and a shelf is also installed on the top of the bracket.

[0018] The beneficial effects of this invention are as follows: By coordinating a solenoid valve and a cylinder, the threading process is automated, reducing tedious manual operations and improving work efficiency. Precise control through limit switches and control components ensures the accuracy and consistency of thread processing, avoiding errors inherent in manual operation. Automated operation reduces human intervention, lowers safety hazards during operation, and protects worker safety; simply placing the pipe into the clamp and starting the switch completes the threading process, making it simple and easy to master. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a top view of the structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the limiter structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the control principle of this utility model;

[0023] In the diagram: 1-Drive assembly, 101-Chuck motor, 102-Pulley, 103-Chuck, 104-Chuck motor bracket, 105-Chuck drive box, 106-Chuck, 2-Crank assembly, 201-Crank, 202-Die head, 203-Push cylinder return switch, 204-Push plate, 205-Lifting cylinder, 206-Push cylinder control switch, 207-Limiter, 208-Limit groove, 209-Limit tooth, 210-Compression spring, 211-Spring pin, 3-Push assembly, 301-Guide rod, 302-Support plate, 303-Push cylinder support frame, 304-Crank mounting bridge, 305-Sliding sleeve, 306-Main motor control switch, 4-Outrigger, 5-Support platform, 6-Placement platform. Detailed Implementation

[0024] The technical solution of this utility model is further described below, but the scope of protection is not limited to what is described.

[0025] An automatic threading machine includes a drive assembly 1, a toothed disc assembly 2, and a feed assembly 3. The drive assembly 1 and the toothed disc assembly 2 are coaxially mounted on a support platform 5, and the feed assembly 3 is mounted on the end of the support platform 5 away from the drive assembly 1. By coaxially mounting the drive assembly 1 and the toothed disc assembly 2, the synchronicity of the rotation and feed of the pipe during the threading process is ensured, avoiding thread processing errors caused by misalignment. The installation position of the feed assembly 3 is reasonably designed, effectively driving the toothed disc assembly 2 to perform the threading operation.

[0026] Furthermore, the drive assembly 1 includes a chuck 106 and a clamping motor 101. The chuck 106 is installed inside a chuck drive housing 105. A main motor is located inside the chuck drive housing 105 and connected to the chuck 106. A clamping plate 103 is installed outside the chuck 106. The clamping motor 101 is mounted on the chuck drive housing 105 via a clamping motor bracket 104. A pulley 102 is installed on the shaft of the clamping motor 101, and the pulley 102 is connected to the clamping plate 103 via a belt. The clamping motor drives the clamping plate via the belt, causing the jaws in the chuck to clamp the pipe.

[0027] The chuck assembly 2 includes a chuck 201, with a sliding sleeve 305 fixed to each end of the chuck 201. The two sliding sleeves 305 are connected by a chuck mounting bridge 304 and are respectively mounted on guide rods 301. A die head 202 is also mounted on the chuck 201 to control the tension of the threads. A pressure rod is mounted on the end of the die head 202 relative to the chuck 106. The chuck assembly 2, through the cooperation of the sliding sleeves 305 and the guide rods 301, ensures the smooth movement of the chuck 201 during the threading process, avoiding thread processing errors caused by vibration or offset. The die head 202 controls the opening and closing of the chuck 201. During processing, a limiter 207 holds the die head to prevent the chuck 201 from loosening. After processing, the limiter stops holding the die head, causing it to fall and the chuck to loosen. As the die head 202 falls, the pressure rod on the die head 202 is used to trigger the return switch of the propulsion cylinder.

[0028] The propulsion assembly 3 includes a propulsion cylinder, which is mounted on the support platform 5 and its push rod is connected to the gear plate mounting bridge 304.

[0029] It also includes control components.

[0030] Furthermore, the control components include a propulsion cylinder return switch 203, a lifting cylinder 205, a propulsion cylinder control switch 206, a limiter 207, and a main motor control switch 306. The propulsion cylinder return switch 203 and the propulsion cylinder control switch 206 are both mounted on the same sliding sleeve 305. A limit groove 208 is machined within the sliding sleeve 305 and between the propulsion cylinder return switch 203 and the propulsion cylinder control switch 206. The limiter 207 is installed within the limit groove 208, and its bottom is flush with the guide. The top of the guide rod 301 contacts the limit groove 208, which is machined in the side wall of one end of the push assembly 3. A cylindrical groove is provided in the cylindrical groove and connected to the limiter 207. The limit groove 208 is below the die head 202 and its length is 1.5 to 1.8 times that of the limiter 207. The design of the control component ensures the automated control of the threading process. The push cylinder return switch 203 and the push cylinder control switch 206 can automatically stop the equipment after the threading is completed, avoiding over-processing.

[0031] The specific control process is as follows: Figure 4As shown, the propulsion cylinder return switch 203 is a normally open switch, while the propulsion cylinder control switch 206 and the main motor control switch 306 are normally closed switches. The short steel pipe to be threaded is placed into the chuck 106, and the chuck motor 101 is started. The chuck 106 automatically locks the steel pipe under the action of the start button. After pressing the start button, the lifting cylinder lifts the die head 202. At this time, the limit switch 207 moves to the left under the force of the compression spring and is positioned below the die head. The die head presses down the limit switch so that the bottom tooth surface engages with the top tooth surface of the guide rod. Simultaneously, the limit switch no longer applies pressure to the spring contact rod of the propulsion cylinder control switch 206, causing it to change from an open state to a normally closed state. Compressed air enters the rear chamber of the propulsion cylinder, and the piston rod of the propulsion cylinder pushes the die head 202 towards the short pipe. After the die head 202 steps forward, it no longer applies pressure to the spring contact rod of the main motor control switch 306, causing the main motor control switch to the normally closed state, and the main motor starts to rotate; the die contacts the short pipe opening, and threading begins. Since the limit switch 207 remains stationary, while the sliding sleeve 305 moves under the push of the propulsion cylinder, when the pipe thread reaches 1 / 2 of the set length, the spring contact rod on the propulsion cylinder control switch 206 on the sliding sleeve is pressed by the limit switch 207 and turns to the open state. The valve core of the three-position five-way solenoid valve moves to the middle position, the piston rod of the propulsion cylinder stops propulsion and releases air pressure. At this time, the main motor continues to drive the steel pipe to rotate to complete the remaining thread. Then the die head 202 falls off the limit switch, and the pressure rod on the die head 202 applies pressure to the spring contact rod on the propulsion cylinder return switch 203 to make it change from the normally open state to the closed state. The coil at the right end of the dual-control three-position five-way solenoid valve is energized, and compressed air enters the front chamber of the propulsion cylinder. The piston rod of the propulsion cylinder pushes the die head 202 back to its original position. When the die head 202 returns to its original position, the sliding sleeve presses the spring contact rod of the main motor control switch 306 to make it turn to the open state, and the chuck 106 stops rotating. Turn on the reverse switch of the clamp motor 101. After the clamp 103 is released, take out the short tube. A complete threading process is completed, which takes about 25-30 seconds.

[0032] Furthermore, the main motor control switch 306 is obliquely mounted on the side of the propulsion cylinder, and its spring contact rod is placed at the starting point of the stroke of the sliding sleeve 305.

[0033] Furthermore, the lifting cylinder 205 is vertically fixed to the side of the sliding sleeve 305, and a push plate 204 is mounted on the push rod of the lifting cylinder 205, with the push plate 204 positioned directly below the limiter 207. The lifting cylinder 205 allows for precise control of the limiter 207 during the threading process, ensuring the accuracy of the thread machining. The push plate 204 effectively transmits the thrust of the lifting cylinder 205, ensuring the stable operation of the limiter 207.

[0034] Furthermore, limit teeth 209 are machined on the top of the guide rod 301 and the bottom of the limiter 207.

[0035] Furthermore, one end of the guide rod 301 is connected to the chuck drive box 105, and the other end is connected to the support plate 302. The bottom of the support plate 302 is fixed to the edge of the support table 5. The connection method of the guide rod 301 is reasonably designed, which can effectively transmit power and ensure the stability of the threading process. The support plate 302 can effectively support the guide rod 301 and avoid machining errors caused by vibration.

[0036] Furthermore, the two guide rods 301 are at the same height and are parallel to the axes of the drive assembly 1 and the gear assembly 2. The equal height and parallel design of the two guide rods 301 ensures the smooth movement of the gear assembly 2 during the threading process and avoids thread machining errors caused by misalignment.

[0037] Furthermore, the clamp 103 is equipped with a toothed disc, which is mounted on the clamp 103 via bearings. The side of the toothed disc has a helical groove that engages with the jaws. The clamp motor drives the clamp to rotate, and during the rotation of the toothed disc, the helical groove drives the jaws to move closer to the center to clamp the pipe.

[0038] Furthermore, the propulsion cylinder is mounted on the edge of the support platform 5 via a bracket, and a shelf 6 is also mounted on the top of the bracket.

Claims

1. An automatic threading machine, comprising a drive assembly (1), a toothed disc assembly (2), and a feed assembly (3), characterized in that: The drive assembly (1) and the gear assembly (2) are coaxially mounted on the support platform (5), and the propulsion assembly (3) is mounted on the support platform (5) at the end away from the drive assembly (1); The drive assembly (1) includes a chuck (106) and a clamp motor (101). The chuck (106) is installed in a chuck drive box (105). A main motor is provided in the chuck drive box (105) and connected to the chuck (106). A clamp (103) is installed outside the chuck (106). The clamp motor (101) is installed on the chuck drive box (105) through a clamp motor bracket (104). A pulley (102) is installed on the shaft of the clamp motor (101). The pulley (102) is connected to the clamp (103) through a belt. The toothed plate assembly (2) includes a toothed plate (201), with a sliding sleeve (305) fixed at each end of the toothed plate (201). The two sliding sleeves (305) are connected by a toothed plate mounting bridge (304) and are respectively mounted on a guide rod (301). A die head (202) is also installed on the toothed plate (201) to control the tension of the threads. A pressure rod is installed on one end of the die head (202) relative to the chuck (106). The propulsion assembly (3) includes a propulsion cylinder, which is mounted on a support platform (5) and its push rod is connected to the toothed plate mounting bridge (304); It also includes control components.

2. The automatic threading machine as described in claim 1, characterized in that: The control components include a propulsion cylinder return switch (203), a lifting cylinder (205), a propulsion cylinder control switch (206), a limit switch (207), and a main motor control switch (306). The propulsion cylinder return switch (203) and the propulsion cylinder control switch (206) are both mounted on the same sliding sleeve (305). The propulsion cylinder return switch (203) and the propulsion cylinder control switch (206) are located within the sliding sleeve (305) and between the two... A limiting groove (208) is machined in the middle, and a limiter (207) is installed in the limiting groove (208) with its bottom contacting the top of the guide rod (301). A cylindrical groove is machined in the side wall of the limiting groove (208) adjacent to one end of the propulsion assembly (3). A compression spring (210) is provided in the cylindrical groove and connected to the limiter (207). The limiting groove (208) is below the die head (202) and its length is 1.5 to 1.8 times that of the limiter (207). The main motor control switch (306) is obliquely mounted on the side of the propulsion cylinder, and its spring contact rod is placed at the starting point of the stroke of the sliding sleeve (305); The lifting cylinder (205) is vertically fixed to the side of the sliding sleeve (305), and a push plate (204) is installed on the top of the push rod of the lifting cylinder (205), which is positioned directly below the limiter (207).

3. The automatic threading machine as described in claim 2, characterized in that: Limiting teeth (209) are machined on the top of the guide rod (301) and the bottom of the limiter (207).

4. The automatic threading machine as described in claim 1, characterized in that: One end of the guide rod (301) is connected to the chuck drive box (105), and the other end is connected to the support plate (302). The bottom of the support plate (302) is fixed to the edge of the support platform (5).

5. The automatic threading machine as described in claim 4, characterized in that: The two guide rods (301) are at the same height and are parallel to the axis of the drive assembly (1) and the chainring assembly (2).

6. The automatic threading machine as described in claim 1, characterized in that: The chuck (103) is equipped with a toothed disc, which is mounted on the chuck (103) via bearings. The side of the toothed disc is provided with a spiral groove that engages with the jaws.

7. The automatic threading machine as described in claim 1, characterized in that: The propulsion cylinder is mounted on the edge of the support platform (5) via a bracket, and a shelf (6) is also mounted on the top of the bracket.

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