Fully automatic thin-wall stainless steel pipe rolling machine

Abstract

The present invention relates to a fully automatic thin-wall stainless steel pipe rolling machine, which comprises a frame, an automatic indexing feeding mechanism arranged in the middle of the frame, a fixed plate fixedly installed on the frame and located on one side of the automatic indexing feeding mechanism, a movable plate slidably installed on the frame and located on the other side of the automatic indexing feeding mechanism, and a feeding mechanism arranged on the fixed plate and the movable plate, a rolling mechanism is installed on the feeding mechanism, and an automatic clamping device for clamping a workpiece is arranged above the automatic indexing feeding mechanism; the present invention realizes automatic rolling of thin-wall stainless steel pipes through the automatic indexing feeding mechanism, the feeding mechanism, the rolling mechanism and the automatic clamping device, thereby improving product quality and quality stability, improving production efficiency, reducing labor costs, and improving production and use safety.

Description

Technical Field

[0001] The invention relates to a full-automatic thin-wall stainless steel pipe mouth rolling machine. Background Art

[0002] In daily life, the amount of plug-in thin-walled stainless steel pipes is quite large, such as children's beds, various brackets, simple tents, etc. They are cut into different lengths during production. The flash and burrs left at the cuts often cause scratches during use. In addition, the rigidity at the orifice is low and easy to change. After deformation, it affects the connection with the joint and even becomes scrapped. At present, manual operation is used in production, which has a large workload, high labor cost, unstable quality, and safety hazards. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a fully automatic thin-wall stainless steel pipe mouth rolling machine, which can realize automatic mouth rolling and improve product quality and quality stability.

[0004] The technical solution adopted by the present invention is:

[0005] A fully automatic thin-wall stainless steel pipe edge rolling machine comprises a frame, an automatic indexing feeding mechanism arranged in the middle of the frame, a fixed plate fixedly installed on the frame and located on one side of the automatic indexing feeding mechanism, a movable plate slidably installed on the frame and located on the other side of the automatic indexing feeding mechanism, and a feeding mechanism arranged on the fixed plate and the movable plate, a rolling mechanism is installed on the feeding mechanism, and an automatic clamping device for clamping a workpiece is provided above the automatic indexing feeding mechanism.

[0006] Furthermore, the automatic indexing feeding mechanism includes a rotating shaft installed on a frame and driven by a stepper motor, feed wheels arranged at both ends of the rotating shaft, a workpiece clamping groove arranged on the outer edge of the feed wheel, and a feed channel arranged on one side between the two feed wheels.

[0007] Furthermore, the feed channel includes an inclined mounting base plate, two L-shaped plates arranged on the mounting base plate and positioned opposite to each other, the mounting base plate and the two L-shaped plates form a space for placing workpieces, and the lower side end of the mounting base plate corresponds to the feed wheel, so that the material can smoothly enter the workpiece slot.

[0008] Furthermore, a feed baffle is provided between the lower ends of the two L-shaped plates, and the feed baffle and the mounting base plate form a material channel, so that the material falls from the space for placing the workpiece into the workpiece slot.

[0009] Furthermore, a long keyway is provided on the rotating shaft, the feed wheel is arranged on the rotating shaft through a key connection, and the feed wheel close to the movable plate is fixedly connected to the movable plate through a fork plate.

[0010] Furthermore, the automatic clamping device includes a clamping cylinder arranged above the feed wheel, a clamping block is provided on the piston rod of the clamping cylinder, a groove is provided at the bottom of the clamping block, and the clamping block cooperates with the workpiece clamping groove on the feed wheel to fix the workpiece.

[0011] Furthermore, the movable plate is slidably arranged on the frame through a first slide rail, a lead screw is arranged on the frame through a bearing, a nut matching the lead screw is installed on the bottom surface of the movable plate, and a hand wheel is provided at one end of the lead screw for adjusting the position to adapt to workpieces of different lengths.

[0012] Furthermore, the feeding mechanism includes a second slide rail, a support plate slidably arranged on the second slide rail, a motor spindle fixed on the support plate, and a roller head installed on the motor spindle. The second slide rail is arranged on the corresponding movable plate and fixed plate, and a thrust cylinder is fixed on the movable plate and the fixed plate. The piston rod of the thrust cylinder is connected to the support plate.

[0013] Furthermore, the roller head includes a roller head body, a roller head cover installed on the roller head body by bolts, and a roller installed between the roller head body and the roller head cover. Grooves are opened on the roller head body and the roller head cover, and two rollers are correspondingly installed on both sides of the groove. The roller contacts the end of the workpiece to perform rolling work.

[0014] Furthermore, a material drop baffle is provided on the other side of the feed wheel.

[0015] The positive effects of the present invention are as follows: the present invention realizes automatic rolling of thin-walled stainless steel pipes through an automatic indexing feeding mechanism, a feeding mechanism, a rolling mechanism and an automatic clamping device, thereby improving product quality and quality stability, improving production efficiency, reducing labor costs, and improving production and use safety.

[0016] The whole machine can realize coordinated operation of the process by controlling the stepper motor and pneumatic valve through PLC. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of the feed wheel of the present invention;

[0019] Figure 3 This is a schematic diagram of the roller head structure of the present invention;

[0020] Figure 4 This is a schematic diagram of the structure of the automatic indexing feeding mechanism of the present invention;

[0021] Figure 5 It is a structural schematic diagram of the automatic clamping device of the present invention;

[0022] Figure 6 It is a schematic diagram of the structure of the feed baffle of the present invention. DETAILED DESCRIPTION

[0023] As attached Figure 1-6 As shown, the present invention includes a frame 1, an automatic indexing and feeding mechanism arranged in the middle of the top surface of the frame 1, a fixed plate 13 fixedly installed on the frame 1 and located on one side of the automatic indexing and feeding mechanism, and a movable plate 3 slidably installed on the frame 1 and located on the other side of the automatic indexing and feeding device. Feeding mechanisms are installed on the fixed plate 13 and the movable plate 3, and a hemming mechanism is installed on the feeding mechanism. When working, the workpiece is located between the two hemming mechanisms. An automatic clamping device is provided above the automatic indexing and feeding mechanism. When the workpiece is in the working position, the automatic clamping device presses the workpiece to prevent it from moving.

[0024] The automatic indexing feeding mechanism includes a rotating shaft 24 installed on the mechanism 1, and a stepper motor 15 is provided on one side of the rotating shaft 24. The rotating shaft 24 is connected to the stepper motor 15 to drive it to rotate. Two feed wheels 16 are provided on the rotating shaft 24, and workpiece clamping grooves 17 are provided at corresponding positions on the outer edges of the two feed wheels 16. A feed channel is provided on one side of the two feed wheels.

[0025] The feed channel includes two mounting base plates 22 obliquely arranged on the frame 1, and an L-shaped plate 10 arranged on the two mounting base plates 22. A feed baffle plate 23 is arranged at the lower side end of the two L-shaped plates 10. There is a certain gap between the position of the feed baffle plate 23 and the mounting base plate 22, so that the workpiece can slide out of the gap. The feed baffle plate 23, the two L-shaped plates 10, and the mounting base plate 22 form a workpiece placement space with an inclined bottom. The lower side end of the mounting base plate 22 corresponds to the feed wheel 16. After the workpiece falls by its own weight, it can smoothly enter the workpiece slot 17. A blanking baffle plate is arranged on the other side of the feed wheel 16. The workpiece that has completed the rolling work continues to rotate with the feed shaft 16, and the blanking baffle plate prevents the workpiece from being thrown out.

[0026] Since the length of each batch of workpieces may be inconsistent, the spacing between the two L-shaped plates 10 and the feed wheel 16 is designed to be adjustable. A long keyway is provided on the rotating shaft 24, and the feed wheel 16 is installed on the rotating shaft 24 through a key connection. At the same time, a connection part 19 is fixed to the outer side of the feed wheel 16 close to the movable plate 3, and an annular groove is provided on the connection part. A fork plate 18 is fixed on the movable plate 3, and the fork part of the fork plate 18 is vertically inserted into the annular groove, which does not affect the rotation of the feed wheel 16, and can make the feed wheel 16 move with the movable plate 3. Matching this, the distance between the two L-shaped plates 10 also needs to be adjusted. A number of long grooves 21 are provided in the horizontal direction on the bottom plate of the L-shaped plate 10, and a threaded hole is provided on the mounting bottom plate 22. Bolts are inserted into the long grooves 21 and screwed into the threaded holes to fix the L-shaped plate 10 and the mounting bottom plate 22. The position of the L-shaped plate 10 can be adjusted by loosening the bolts.

[0027] The automatic clamping device includes a mounting rod arranged above the feed wheel 16, an axle seat 20 arranged on the mounting rod, a clamping cylinder 11 installed on the axle seat 20, and a clamping block 12 installed on the piston rod of the clamping cylinder 11. When the workpiece enters the workpiece slot 17 and moves to the highest position with the feed wheel 16, the clamping block 12 presses down to fix the workpiece between the clamping block 12 and the workpiece slot 17 to prevent the workpiece from shifting during processing.

[0028] The movable plate 3 is slidably arranged on the frame 1 through the first slide rail 2, and a lead screw 14 is arranged on the frame 1 through a bearing. A nut matching the lead screw 14 is installed on the bottom surface of the movable plate 3, and a handwheel 4 is arranged at one end of the lead screw 14. When the lead screw 14 rotates, the nut and the movable plate 3 can be driven to move along the axial direction of the lead screw to adapt to workpieces of different lengths.

[0029] The feeding mechanism includes a second slide rail 5, a support plate 7 slidably mounted on the second slide rail 5, a motor spindle 8 fixed on the support plate 7, and a roller head 9 installed on the motor spindle. The second slide rail 5 is arranged on the corresponding movable plate 3 and fixed plate 13. A thrust cylinder 6 is fixed on the movable plate 3 and the fixed plate 13, and its piston rod is connected to the support plate 6. The two feeding mechanisms are arranged opposite to each other and can move inward or outward relative to each other.

[0030] The roller head 9 includes a circular roller head body 902, a roller head cover 901 installed on the roller head body 902 by bolts, and a roller shaft 903 installed between the roller head body 902 and the roller head cover 901. Grooves are provided on 902 and the roller head cover 901, and two roller shafts 903 are symmetrically installed on the two side walls of the groove. The roller head is driven by the motor spindle 8 to rotate at high speed. After the thin-walled stainless steel pipe is positioned and clamped, the two propulsion cylinders push the roller head at the same time, so that the roller shaft 903 contacts the pipe mouth with a certain pressure, completing the hemming process.

[0031] Taking the Φ22×60×0.2mm thin-walled stainless steel tube as an example, by adjusting the spacing between the two feed wheels 16 through the screw nut assembly, the 20-60mm thin-walled stainless steel tube can be rolled. Put multiple stainless steel tubes in parallel between the two feed L-shaped plates 10, and drive the feed wheel 16 to rotate by a stepper motor 15 through the reducer and the rotating shaft 24. Each time it rotates 45°, the thin-walled stainless steel tube is brought to the processing position just above through the workpiece clamping groove 17 on the feed wheel 16. At this time, the feed wheel 16 stops rotating and the stainless steel tube is in the working position. The thin-walled stainless steel tube is clamped by two clamping cylinders 11 at the same time. Then, the two left and right propulsion cylinders 6 simultaneously push the two motor spindles 8 and the roller head 9 to feed to the middle at the same time, contact the orifice under a certain pressure for rolling, and return to the original position after completion. At this time, the stepper motor 15 drives the feed wheel 16 to rotate by another 45° angle through the reducer and the rotating shaft 24 to perform the next rolling action. The stainless steel pipe with completed hemming falls into the receiving frame from the other side.

Claims

1. A fully automatic thin-walled stainless steel pipe rolling machine, characterized in that The invention relates to a machine frame (1), an automatic indexing feeding mechanism arranged in the middle of the machine frame (1), a fixed plate (13) fixedly mounted on the machine frame (1) and located on one side of the automatic indexing feeding mechanism, a movable plate (3) slidably mounted on the machine frame (1) and located on the other side of the automatic indexing feeding mechanism, and a feeding mechanism arranged on the fixed plate (13) and the movable plate (3), wherein a rolling mechanism is installed on the feeding mechanism, and an automatic clamping device for clamping a workpiece is provided above the automatic indexing feeding mechanism; the feeding mechanism comprises a second slide rail (5), a support plate (7) slidably mounted on the second slide rail (5), a motor spindle (8) fixed on the support plate (7), and a roller head (9) mounted on the motor spindle (8), wherein the second slide rail (5) is arranged on the corresponding movable plate (3) and fixed plate (13), a propulsion cylinder (6) is fixed on the movable plate (3) and the fixed plate (13), and a piston rod of the propulsion cylinder (6) is connected to the support plate (7); the roller head (9) comprises A roller head body (902), a roller head cover (901) mounted on the roller head body (902) by bolts, and a roller shaft (903) mounted between the roller head body (902) and the roller head cover (901), grooves are formed on the roller head body (902) and the roller head cover (901), two roller shafts (903) are mounted on the two sides of the groove, and the roller shafts (903) are in contact with the ends of the workpiece to perform the rolling operation. The automatic indexing feeding mechanism includes a roller shaft (903) mounted on the frame (1) and driven by a stepping motor (1 5) a driving rotating shaft (24), feed wheels (16) arranged at both ends of the rotating shaft (24), a workpiece clamping groove (17) arranged on the outer edge of the feed wheel (16), and a feed channel arranged on one side of the two feed wheels (16), wherein a long key groove is provided on the rotating shaft (24), the feed wheel (16) is arranged on the rotating shaft (24) through a key connection, and the feed wheel (16) close to the movable plate (3) is fixedly connected to the movable plate (3) through a fork plate (18).

2. The fully automatic thin-walled stainless steel pipe rolling machine according to claim 1 is characterized in that The feed channel comprises an inclined mounting base plate (22), and two L-shaped plates (10) disposed on the mounting base plate (22) and positioned opposite to each other, the mounting base plate (22) and the two L-shaped plates (10) forming a space for placing workpieces, and the lower side end of the mounting base plate (22) corresponds to the feed wheel (16), so that the material can smoothly enter the workpiece clamping groove (17).

3. The fully automatic thin-walled stainless steel pipe rolling machine according to claim 2 is characterized in that A material feed baffle (23) is provided between the lower ends of the two L-shaped plates (10), and the material feed baffle (23) and the mounting bottom plate (22) form a material channel, allowing the material to fall from the space where the workpiece is placed into the workpiece clamping groove (17).

4. The fully automatic thin-walled stainless steel pipe rolling machine according to claim 1, characterized in that The automatic clamping device comprises a clamping cylinder (11) arranged above a feed wheel (16), a clamping block (12) being arranged on a piston rod of the clamping cylinder (11), a groove being arranged at the bottom of the clamping block (12), and the clamping block (12) cooperating with a workpiece clamping groove (17) on the feed wheel (16) to fix the workpiece.

5. The fully automatic thin-walled stainless steel pipe rolling machine according to claim 1 is characterized in that The movable plate (3) is slidably arranged on the frame (1) via a first slide rail (2); a lead screw (14) is arranged on the frame (1) via a bearing; a nut matching the lead screw (14) is installed on the bottom surface of the movable plate (3); and a hand wheel (4) is arranged at one end of the lead screw (14).

6. The fully automatic thin-walled stainless steel pipe rolling machine according to claim 3 is characterized in that A material drop baffle is provided on the other side of the feed wheel (16).

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