Automatic pier rib necking machine for scaffold connecting rod

Abstract

The utility model discloses an automatic pier rib necking machine for a scaffold connecting rod, which comprises a main body frame, the left end and the right end of the main body frame are respectively provided with an extrusion device, the two extrusion devices are symmetrically arranged, two guide rails are arranged between the two extrusion devices, the middle part of the main body frame is provided with a long hole, and the long hole is positioned between the two guide rails. A feeding air cylinder is arranged below the long hole, a supporting plate is arranged on an air cylinder rod of the feeding air cylinder, an oil tank is arranged behind the main body frame, a slope material frame is arranged on the oil tank, and the lower end of the slope material frame abuts against the supporting plate, so that the short steel pipes can fall into the supporting plate along the slope material frame and are conveyed to the position between the two extrusion devices through the feeding air cylinder. The two extrusion devices move inwards along the guide rails, and the short steel pipes are extruded to achieve rib upsetting and necking. A workpiece extruded by the pier rib necking machine and the convex rib in the middle are integrally formed, so that the pier rib necking machine has the advantages of high compressive resistance, high strength and attractive appearance, and material loss is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a pier reinforcement necking machine, especially a scaffold connecting rod automatic pier reinforcement necking machine. BACKGROUND

[0002] The scaffold used in construction is connected by connecting rods with convex ribs in the middle when needing to be connected up and down, and the current connecting rod is formed by sleeving a convex ring in the middle of a short steel pipe and fixing the convex ring on the short steel pipe by welding or riveting, thereby forming the connecting rod, and the connecting rod is made by welding or riveting process, so that the connecting rod has poor strength, small compression resistance, large material loss and unattractive appearance. SUMMARY

[0003] The utility model provides a scaffold connecting rod automatic pier reinforcement necking machine, the workpiece extruded by pier reinforcement necking machine and the middle convex rib are integrally formed, have big compression resistance, high strength, reduce material loss and attractive appearance.

[0004] A scaffold connecting rod automatic pier reinforcement necking machine, including the main frame, its characterized in that: the left and right ends of main frame are provided with extrusion device, two extrusion devices are symmetrically set up, and two extrusion devices are provided with two guide rails between two extrusion devices, two guide rails are parallelly arranged on the both sides of the upper plane of main frame, the middle part of main frame is provided with a long hole, the long hole is located between two guide rails, the upper charging cylinder is provided below the long hole, the cylinder rod of upper charging cylinder is provided with a supporting plate, the rear of main frame is provided with an oil tank, the oil tank is provided with a slope rack, the lower end of slope rack is in abutment with supporting plate, so that short steel pipe can fall into supporting plate along slope rack, and is sent to the extrusion device between two extrusion devices by upper charging cylinder, two extrusion devices move inwards along guide rail, and extrude short steel pipe to realize pier reinforcement and necking.

[0005] Further, the extrusion device includes a base fixed on the main frame, an inductor provided on the base, an oil cylinder provided on one side of the base, an oil cylinder rod of the oil cylinder extending into the base and connected with a connecting disc, four connecting guide rods provided on the connecting disc, one end of the connecting guide rods extending out of the base and connected with a die holder, a die provided in the die holder, a hollow structure at the center of the die, a material withdrawing rod extending into the center of the die at one end and connected with the base at the other end, a sliding block provided at the bottom of the die holder, the die holder slidingly installed on the guide rail through the sliding block, and the die holder moving inwards by the action of the oil cylinder so that the die cooperates to extrude the short steel pipe.

[0006] Further, the connecting disc is uniformly provided with four round holes, the base far from the oil cylinder is also provided with four round holes, the die base close to the base is provided with a connecting plate, the connecting plate is provided with four counterbores, the counterbores, the round holes provided on the base and the round holes provided on the connecting disc are corresponded, one end of the connecting guide rod is fixed with the connecting disc through the base and the connecting plate through bolts, the other end of the connecting guide rod is sunk into the counterbores of the connecting plate, so that the connecting guide rod is connected with the die base.

[0007] Further, the connecting guide rod is T-shaped structure, and the diameter of the rod body of the connecting guide rod is smaller than the diameter of the round hole on the base, so that the connecting guide rod is not in contact with the round hole on the base when passing through the round hole of the base.

[0008] Further, the die is provided with a necking inclined surface transition section in the port, so that the short steel pipe can realize necking when being extruded.

[0009] Further, the die base is also provided with a discharging cylinder, the cylinder rod of the discharging cylinder is provided with a discharging inclined plate, and the workpiece after extrusion can be sent into the material frame through the discharging inclined plate.

[0010] Further, the oil tank is provided with a flange connecting disc, the upper end of the flange connecting disc is provided with an oil pump motor, the lower end of the flange connecting disc extends into the oil tank and is connected with the oil pump, the motor shaft of the oil pump motor is connected with the oil pump shaft through a shaft coupling, the input end of the oil pump is connected with the filter element through an oil pipe, the output end of the oil pump is connected with an oil way distributor through an oil pipe, the oil way distributor is provided with a reversing valve, the reversing valve is connected with the oil cylinder through an oil pipe, the oil pump motor drives the oil pump to operate, the hydraulic oil filtered through the filter element is pumped out and supplied to the oil way distributor, and the hydraulic oil is supplied to the oil cylinder from the oil way distributor to make the oil cylinder work.

[0011] Further, the top of the supporting plate is provided with an arc-shaped groove, so that the supporting plate can better receive the short steel pipe.

[0012] Further, the inside of the main frame is provided with a control box and an electromagnetic air valve, one side of the main frame is provided with a rocker arm operation box, the rocker arm operation box and the electromagnetic air valve are respectively connected with the control box through cables, and the air outlets of the electromagnetic air valves are respectively connected with the corresponding cylinders through air pipes.

[0013] Further, the inductor is connected with the control box through a cable, when the inductor senses that the short steel pipe enters the die, the inductor sends an induction signal, the control box receives the induction signal sent by the inductor, and the oil cylinder and the feeding cylinder work.

[0014] The utility model discloses a simple structure, reasonable in design, the workpiece extruded through the pier reinforcement necking machine is integrally formed with the middle convex rib, has big compression resistance, high strength, reduces material loss and the appearance is beautiful. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is the front view of the utility model;

[0016] Figure 2 is the left view of the utility model;

[0017] Figure 3 is the top view of the utility model;

[0018] Figure 4 is the front view of the extrusion device of the utility model;

[0019] Figure 5 is the left view of the extrusion device of the utility model;

[0020] Figure 6 is the right view of the extrusion device of the utility model;

[0021] Figure 7 is the top view of the extrusion device of the utility model;

[0022] Figure 8 is the structural schematic view of the mold of the utility model;

[0023] Figure 9 is the structural schematic view of the workpiece of the utility model. DETAILED DESCRIPTION

[0024] In order to better understand the purpose, function and specific design scheme of the utility model, the following will be further described in detail in combination with the drawings.

[0025] As Figures 1-3 shown, the automatic reinforcement necking machine for scaffold connecting rod of the utility model, including main frame 1, the inside of main frame 1 is provided with control box 4 and electromagnetic air valve 9, one side of main frame 1 is provided with rocker arm operation box 6, the rocker arm operation box 6 and electromagnetic air valve 9 are connected with control box 4 through cable respectively.

[0026] The left and right ends of main frame 1 are provided with extrusion device 5, two extrusion devices 5 are symmetrically arranged, and two guide rails 8 are arranged between the two extrusion devices 5, the two guide rails 8 are arranged on the two sides of the upper plane of main frame 1. The middle part of main frame 1 is provided with an elongated hole, the elongated hole is located between the two guide rails 8, a feeding cylinder 2 is arranged below the elongated hole, a supporting plate 3 is arranged on the cylinder rod of feeding cylinder 2. The rear of main frame 1 is provided with oil tank 16, the oil tank 16 is welded with main frame 1, an inclined slope rack 7 is arranged on oil tank 16, the lower end of inclined slope rack 7 abuts against supporting plate 3, so that short steel pipes can fall into supporting plate 3 along inclined slope rack 7, and an arc-shaped groove is arranged on the top of supporting plate 3, so that supporting plate 3 can better receive short steel pipes.

[0027] The feeding cylinder 2 is connected to the air outlet of the solenoid valve 9 through an air pipe. When the solenoid valve 9 is energized, the valve opens, causing the feeding cylinder 2 to move and push the pallet 3 to rise, sending the short steel pipe to the extrusion position.

[0028] The two extrusion devices 5 have the same structure. For ease of understanding and explanation, one of the extrusion devices 5 will be used as an example. Figures 4-8 As shown, the extrusion device 5 includes a base 29, which is fixed to the main frame 1. A sensor 20 is installed on the base 29 and connected to the control box 4 via a cable. A hydraulic cylinder 18 is installed on one side of the base 29. The cylinder rod of the hydraulic cylinder 18 extends into the base 29 and is connected and fixed to a connecting disc 19. Four connecting guide rods 21 are installed on the connecting disc 19. The four connecting guide rods 21 are evenly distributed along the circumference of the connecting disc 19 and have a T-shaped structure. One end of the connecting guide rod 21 extends out of the base 29 and is connected to the mold base 23. A mold 24 is installed inside the mold base 23. The center of the mold 24 is hollow. One end of the ejector rod 25 extends into the center of the mold 24, and the other end of the ejector rod 25 is connected and fixed to the base 29. A slider 28 is installed at the bottom of the mold base 23. The slider 28 is slidably mounted on a guide rail 8, allowing the mold base 23 to move along the guide rail 8. The mold base 23 is also equipped with a discharge cylinder 27. The cylinder rod of the discharge cylinder 27 is equipped with a discharge ramp 26. The discharge cylinder 27 is connected to the air outlet of the solenoid valve 9 through an air pipe.

[0029] Specifically, such as Figures 4-8 As shown, four round holes are evenly distributed on the connecting disc 19, and four round holes are also provided on the side of the base 29 away from the oil cylinder 18. A connecting plate 22 is provided on the side of the mold base 23 near the base 29. The connecting plate 22 has four countersunk holes. The countersunk holes, the round holes on the base 29 and the round holes on the connecting disc 19 correspond to each other. One end of the connecting guide rod 21 passes through the connecting plate 22 and the base 29 and is fixed to the connecting disc 19 by bolts. The other end of the connecting guide rod 21 is sunk into the countersunk hole of the connecting plate 22. The diameter of the connecting guide rod 21 is smaller than the diameter of the round hole on the base 29, so that when the connecting guide rod 21 passes through the round hole of the base 29, it does not contact the round hole on the base 29.

[0030] The die 24 has a narrowing bevel transition section 31 inside the port, which enables the short steel pipe to narrow during extrusion. When the sensor 20 senses that the short steel pipe has entered the die 24, the sensor 20 sends a sensing signal. The control box 4 receives the sensing signal sent by the sensor 20 and controls the hydraulic cylinder 18 and the feeding cylinder 2 to work.

[0031] A flange connection plate 13 is provided on the oil tank 16. An oil pump motor 10 is provided at the upper end of the flange connection plate 13. The lower end of the flange connection plate 13 extends into the oil tank 16 and is connected to the oil pump 15. The motor shaft of the oil pump motor 10 is connected to the shaft of the oil pump 15 through a coupling 14. The input end of the oil pump 15 is connected to the filter element 17 through an oil pipe. The output end of the oil pump 15 is connected to the oil circuit distributor 12 through an oil pipe. A reversing valve 11 is provided on the oil circuit distributor 12. The reversing valve 11 is connected to the oil cylinder 18 through an oil pipe. The oil pump motor 10 drives the oil pump 15 to operate, extracting the hydraulic oil filtered by the filter element 17 and supplying it to the oil circuit distributor 12. The oil circuit distributor 12 supplies the hydraulic oil to the oil cylinder 18, causing the oil cylinder 18 to move.

[0032] When using it, adjust the extension length of the hydraulic cylinder 18 according to the required length of the short steel pipe for reinforcement. The length of the short steel pipe should be greater than the distance between the two molds after the hydraulic cylinders 18 extend at both ends. The squeezing force of the hydraulic cylinder 18 should also be greater than the force that the short steel pipe can withstand. In this way, when squeezing the short steel pipe, the middle of the short steel pipe can be reinforced. The cut short steel pipes are laid flat on the inclined material rack 7. The equipment is started, and the oil pump motor 10 is energized. First, the feeding cylinder 2 actuates to lift the short steel pipes in the pallet 3 into the extrusion position. The reversing valve 11 is energized, controlling the oil cylinder 18 to move inward, pushing the mold base 23 to both ends of the short steel pipe, so that the short steel pipe is just inserted into the mold 24 at a certain point. At this time, the sensor 20 detects the signal, the oil cylinder 18 stops, the feeding cylinder 2 is de-energized and resets, and falls. After falling into place, the oil cylinder 18 continues to push the mold base 23 inward, so that the mold 24 cooperates to extrude the short steel pipe, making the middle of the short steel pipe rib and completing the narrowing of both ends. After extrusion, the oil cylinder 18 retracts, and the ejector rod 25 in the center hole of the mold 24 is just pressing against the extruded workpiece (e.g., Figure 8 (As shown) Keep it still. As the hydraulic cylinder 18 retracts, the unloading cylinder 27 opens, and the unloading ramp 26 extends below the extruded workpiece (connecting rod 30). After the hydraulic cylinder 18 retracts to its position, both ends of the workpiece (connecting rod 30) also emerge from the mold opening and slide down the unloading ramp 26 into the material frame. The entire reinforcement necking process is completed. Repeat the above steps for automatic cyclic operation.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A scaffold coupling rod automatic joggling necking machine comprising a main frame, characterized in that: The left and right ends of the main frame are provided with extrusion devices, the two extrusion devices are symmetrically arranged, and two guide rails are arranged between the two extrusion devices, the two guide rails are arranged in parallel on the two sides of the upper plane of the main frame; the middle part of the main frame is provided with an elongated hole, the elongated hole is located between the two guide rails, a feeding cylinder is arranged below the elongated hole, a supporting plate is arranged on the cylinder rod of the feeding cylinder, an oil tank is arranged at the rear of the main frame, an inclined rack is arranged on the oil tank, and the lower end of the inclined rack abuts against the supporting plate, so that the short steel pipe can fall into the supporting plate along the inclined rack and be sent to between the two extrusion devices through the feeding cylinder, the two extrusion devices move inward along the guide rails, and the short steel pipe is extruded to realize pier reinforcement and necking.

2. The automatic pining and necking machine for scaffold connecting rods according to claim 1, characterized in that: The extrusion device comprises a base fixed on the main frame, a sensor arranged on the base, an oil cylinder arranged on one side of the base, an oil cylinder rod of the oil cylinder extending into the base and being connected and fixed with a connecting disc, four connecting guide rods arranged on the connecting disc, one end of each connecting guide rod extending out of the base and being connected with a die seat, a die arranged in the die seat, a hollow structure at the center of the die, a material withdrawing rod extending into the center of the die at one end and being connected and fixed with the base at the other end, a sliding block arranged at the bottom of the die seat, and the die seat being slidably arranged on the guide rail through the sliding block; the oil cylinder is actuated to push the die seat to move inward, so that the die is matched to extrude the short steel pipe.

3. The automatic pining and necking machine for scaffold connecting rods according to claim 2, characterized in that: Four circular holes are uniformly arranged on the connecting disc, four circular holes are also arranged on the side of the base away from the oil cylinder, a connecting plate is arranged on the side of the die seat close to the base, four counterbores are arranged on the connecting plate, the counterbores correspond to the circular holes arranged on the base and the circular holes arranged on the connecting disc, one end of each connecting guide rod passes through the connecting plate and the base and is fixed with the connecting disc through a bolt, and the other end of each connecting guide rod is sunk into the counterbores of the connecting plate, so that the connecting guide rods are connected with the die seat.

4. The automatic pining and necking machine for scaffold connecting rods according to claim 3, characterized in that: The connecting guide rods are in T-shaped structure, and the diameters of the rod bodies of the connecting guide rods are smaller than the diameters of the circular holes on the base, so that the connecting guide rods do not contact the circular holes on the base when passing through the circular holes.

5. The automatic pining and necking machine for scaffold connecting rods according to claim 2, characterized in that: The die has a necking bevel transition section in the port, so that the short steel pipe can be necked when being extruded.

6. The automatic pining and necking machine for scaffold connecting rods according to claim 2, characterized in that: A discharging cylinder is further arranged on the die seat, a discharging inclined plate is arranged on the cylinder rod of the discharging cylinder, and the discharging inclined plate can send the extruded workpiece into a material frame.

7. The automatic pining and necking machine for scaffold connecting rods according to claim 2, characterized in that: A flange connecting disc is arranged on the oil tank, an oil pump motor is arranged at the upper end of the flange connecting disc, the lower end of the flange connecting disc extends into the oil tank and is connected with an oil pump, a motor shaft of the oil pump motor is connected with an oil pump shaft through a shaft coupling, an input end of the oil pump is connected with a filter element through an oil pipe, an output end of the oil pump is connected with an oil way distributor through an oil pipe, a reversing valve is arranged on the oil way distributor, the reversing valve is connected with the oil cylinder through an oil pipe, the oil pump motor drives the oil pump to operate, hydraulic oil filtered by the filter element is pumped out and supplied to the oil way distributor, the oil way distributor supplies the hydraulic oil to the oil cylinder to actuate the oil cylinder.

8. The automatic pining and necking machine for scaffold connecting rods according to claim 1, characterized in that: An arc-shaped groove is arranged at the top of the supporting plate, so that the supporting plate can better receive the short steel pipe.

9. The automatic pining and necking machine for scaffold connecting rods according to claim 2, characterized in that: The inside of the main body frame is provided with a control box and an electromagnetic air valve, and one side of the main body frame is provided with a rocker arm operation box, which is connected with the control box through a cable respectively.

10. The automatic pining and necking machine for scaffold connecting rods according to claim 9, characterized in that: The inductor is connected with the control box through a cable, and when the inductor senses that the short steel pipe enters the mold, the inductor sends an induction signal, the control box receives the induction signal sent by the inductor, and controls the oil cylinder and the feeding cylinder to work.

Images