Rotary pre-bending device

Abstract

The present invention relates to a rotary pre-bending device, comprising a rotating frame, a fixed seat, a pre-bending mechanism and a driving mechanism, wherein one end of the rotating frame is rotatably connected to the top of the fixed seat through a main shaft, the driving mechanism is connected to the rotating frame and can drive the rotating frame to rotate around the main shaft, the rotating frame is connected to the pre-bending mechanism, the driving mechanism comprises a rotating motor, a speed reducer, a pinion and a gear, the rotating motor is fixed to the fixed frame, the rotating motor is connected to the speed reducer, the rotating shaft on the speed reducer is connected to the pinion, the pinion is meshed with the gear, and the gear is fixedly connected to the rotating frame. In the present invention, the material basket does not need to be transported to multiple workstations, the overall footprint is small and it is more convenient to replace tooling.

Description

Technical Field

[0001] The invention relates to a pre-bending device, in particular to a rotary pre-bending device for pipes. Background Art

[0002] In the non-ferrous metal pipe industry, pre-bending machines are often used for pre-bending of linked drawing machines. Currently, three-station roller combined with fixed pre-bending machines are the most widely used, such as Figure 1 As shown, the empty basket 1 is driven by the motor of the first conveyor roller 2 to deliver the basket to the working position 4, the fixed pre-bending machine 3 pre-bends the pipe and then puts it into the basket 1 at the working position, and after the collection is completed, the rotating roller 5 rotates 90° and delivers the basket 1 at the working position to the finished product position 7 through the second conveyor roller 6, as shown in FIG. Figure 2 As shown, the fixed pre-bending machine 3 is mainly composed of a gear box 8, a fixed frame 9 and a fixed base frame 10. During the pre-bending process, the fixed frame is fixed and does not move. Therefore, the existing fixed pre-bending machine has the disadvantages of occupying a large area and being inconvenient to change tooling. Summary of the invention

[0003] In order to overcome the above-mentioned defects, the present invention provides a rotary pre-bending device. During use, the rotating frame of the device can rotate to different workstations to meet the pre-bending and material receiving requirements. Therefore, the material basket in the present invention does not need to be transferred to multiple workstations, the overall footprint is small and it is easier to replace tooling.

[0004] The technical solution adopted by the present invention to solve its technical problem is:

[0005] A rotary pre-bending device comprises a rotary frame, a fixed seat, a pre-bending mechanism and a driving mechanism, wherein one end of the rotary frame is rotatably connected to the upper part of the fixed seat through a main shaft, the driving mechanism is connected to the rotary frame and can drive the rotary frame to rotate around the main shaft, and the pre-bending mechanism is connected to the rotary frame.

[0006] Preferably, the driving mechanism includes a rotating motor, a reducer, a pinion and a gear. The rotating motor is fixed on a fixed frame, the rotating motor is connected to the reducer, the rotating shaft on the reducer is connected to the pinion, the pinion is meshed with the gear, and the gear is fixedly connected to a rotating frame.

[0007] Preferably, it further comprises a brake mechanism, which comprises a brake disc and a brake that cooperate with each other, wherein the brake disc is arranged on the rotating shaft of the reducer, and the brake is arranged on the rotating frame near the brake disc.

[0008] Preferably, a positioning mechanism is provided on the fixing seat, and the positioning mechanism can fix the rotating frame at a preset position.

[0009] Preferably, the positioning mechanism includes a positioning cylinder, a positioning pin and a guide seat, the positioning cylinder is vertically fixed on the fixed seat, the piston rod of the positioning cylinder is connected to a positioning pin, and a guide seat is respectively provided on the fixed seat and the rotating frame, and the positioning cylinder can drive the positioning pin to move up and down along the guide seat.

[0010] Preferably, a supporting mechanism is provided on the fixed seat, and the supporting mechanism is used to support the rotating frame.

[0011] Preferably, the supporting mechanism includes a supporting frame, an inclined supporting wheel and a second bearing. The supporting frame is fixed on a fixed seat. An inclined supporting shaft is provided on the supporting frame. The inclined supporting wheel is mounted on the supporting shaft through a second bearing sleeve. The surface of the inclined supporting wheel is inclinedly fitted to the rotating frame.

[0012] The beneficial effects of the present invention are as follows: the pre-bending mechanism in the present invention is fixed on the rotating frame, and the rotating frame can rotate around the main shaft on the fixed seat under the action of the driving mechanism. When the pipe needs to be pre-bent and rolled, the rotating frame and the pre-bending mechanism are rotated to the working position, and the pipe is pre-bent by the pre-bending mechanism and then collected into the material basket, and then the rotating frame is rotated to the receiving position by the driving mechanism, so that the pre-bending mechanism is completely separated from the material basket, and the loaded material basket can be directly lifted away. Therefore, the material basket in the present invention does not need to be transported to multiple workstations, and the overall footprint is small, which is half the footprint of a fixed pre-bending machine, and it is more convenient to replace tooling; the present invention does not need to adopt conveying rollers, rotating rollers and other mechanisms, saves production costs, reduces processes, and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of a fixed pre-bending machine in the prior art;

[0014] Figure 2 It is a working schematic diagram of a fixed pre-bending machine in the prior art;

[0015] Figure 3 It is a structural schematic diagram of the present invention;

[0016] Figure 4 It is a partial enlarged view of the present invention;

[0017] Figure 5 It is a partial cross-sectional view of the present invention;

[0018] Figure 6 It is a schematic diagram of the present invention in a working position;

[0019] Figure 7 It is a schematic diagram of the present invention at the material receiving position;

[0020] In the figure: 1-material basket, 2-first conveyor roller, 3-fixed pre-bending machine, 4-working position, 5-rotating roller, 6-second conveyor roller, 7-finished product position, 8-gear box, 9-fixed frame, 10-fixed base frame, 20-rotating frame, 30-fixed seat, 40-pre-bending mechanism, 50-driving mechanism, 51-rotating motor, 52-reducer, 53-brake disc, 54-brake, 55-small gear, 56-large gear, 57-spindle, 58-first bearing, 60-positioning mechanism, 61-positioning cylinder, 62-positioning pin, 63-guide seat, 70-supporting mechanism, 71-supporting frame, 72-inclined supporting wheel, 73-second bearing. DETAILED DESCRIPTION

[0021] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0022] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0023] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0024] Example: Figure 3-5 As shown, a rotary pre-bending device includes a rotating frame 20, a fixed seat 30, a pre-bending mechanism 40 and a driving mechanism 50. One end of the rotating frame 20 is rotatably connected to the top of the fixed seat 30 through a main shaft 57. The driving mechanism 50 is connected to the rotating frame 20 and can drive the rotating frame to rotate around the main shaft 57. The pre-bending mechanism 40 is connected to the rotating frame 20. Among them, the main shaft 57 is sleeved with a first bearing 58, the rotating frame 20 is fixedly connected to the first bearing, and the rotating frame rotates around the main shaft through the first bearing; the pre-bending mechanism 40 adopts commonly used structures such as a gear set and a pre-bending wheel. The gear set and the pre-bending wheel are placed in a gear box. The pre-bending mechanism can adopt the pre-bending mechanism disclosed in patent application numbers: 201821224321.X and 201810511759.4, but is certainly not limited thereto. In the present invention, the pre-bending mechanism 40 is fixed on the rotating frame, and the rotating frame 20 is fixedly connected to the first bearing. The rotating frame rotates around the main shaft through the first bearing. The rotating frame can rotate around the main axis on the fixed seat under the action of the driving mechanism. When the pipe needs to be pre-bent and rolled, the rotating frame and the pre-bending mechanism are rotated to the working position, and the pre-bending mechanism 40 is used to pre-bend the pipe and put it into the material basket 1, and then the rotating frame is rotated to the receiving position by the driving mechanism, so that the pre-bending mechanism 40 is completely separated from the material basket, and the loaded material basket can be directly lifted away. Therefore, the material basket in the present invention does not need to be transported to multiple workstations, the overall footprint is small and it is more convenient to replace tooling.

[0025] like Figure 4As shown, the present invention also includes a brake mechanism, which includes a brake disc 53 and a brake 54 that cooperate with each other. The brake disc 53 is arranged on the rotating shaft of the reducer, and the brake 54 is arranged on the rotating frame near the brake disc. A positioning mechanism 60 is provided on the fixed seat 30, and the positioning mechanism can fix the rotating frame 20 at a preset position. The positioning mechanism 60 includes a positioning cylinder 61, a positioning pin 62 and a guide seat 63. The positioning cylinder 61 is vertically fixed on the fixed seat 30, and the piston rod of the positioning cylinder is connected to a positioning pin 62. A guide seat 63 is respectively provided on the fixed seat and the rotating frame. The positioning cylinder can drive the positioning pin to move up and down along the guide seat 63. The positioning cylinder drives the positioning pin 62 to move upward. When the positioning pin is inserted into the guide seat on the rotating frame, the rotating frame can stop running and be positioned at a preset position.

[0026] The driving mechanism 50 includes a rotary motor 51, a reducer 52, a pinion 55 and a large gear 56. The rotary motor 51 is fixed on a fixed frame, the rotary motor is connected to the reducer, the rotating shaft on the reducer is connected to the pinion, the pinion 55 is meshed with the large gear 56, and the large gear 56 is fixedly connected to the rotating frame 20. The rotary motor drives the reducer and the pinion to rotate, and the pinion drives the large gear and the rotating frame to rotate synchronously. When the rotating frame rotates to a specified position, the positioning cylinder drives the positioning pin 62 to move upward. When the positioning pin is inserted into the guide seat on the rotating frame, the rotating frame stops running, and the brake brakes the brake disc at the same time, so that the rotating shaft of the reducer stops rotating quickly, and then the pre-bending mechanism 40 performs pre-bending and receiving work on the pipe.

[0027] like Figure 5As shown, a supporting mechanism 70 is provided on the fixed seat 30, and the supporting mechanism is used to support the rotating frame 20. The supporting mechanism 70 includes a supporting frame 71, an inclined supporting wheel 72 and a second bearing 73. The supporting frame 71 is fixed on the fixed seat, and an inclined supporting shaft is provided on the supporting frame 71. The inclined supporting wheel 72 is sleeved on the supporting shaft through the second bearing 73, and the surface of the inclined supporting wheel 72 is inclinedly fitted to the rotating frame 20. Since the rotating frame 20 and the pre-bending mechanism 40 are relatively heavy, a large pressure is applied to the main shaft and the first bearing, and the first bearing wears a lot. In order to improve this situation, a supporting mechanism 70 is added to the fixed seat. The inclined supporting wheel in the supporting mechanism provides supporting force for the rotating frame. The inclined supporting wheel can rotate around the supporting shaft driven by the rotating frame, thereby reducing the wear of the inclined supporting wheel and the rotating frame. Under the action of its own gravity and the pre-bending mechanism, the rotating frame will show a certain inclination during the rotation process. The surface of the inclined supporting wheel is set to the same slope as the inclination angle of the rotating frame, so that the contact surface between the inclined supporting wheel and the rotating frame reaches the maximum, that is, the rotation speed of the inclined supporting wheel at different points is kept consistent. Therefore, when the inclined supporting wheel and the rotating frame rotate, there will be no speed deviation, thereby ensuring that the inclined supporting wheel will not produce abnormal wear.

[0028] The operation process of the present invention:

[0029] Initially, the rotating frame 20 is in the receiving position. When the material frame 1 is ready, the driving mechanism 50 is started. Under the action of the driving mechanism, the rotating frame 20 rotates around the main shaft 57 on the fixed seat 30 to the working position (such as Figure 6 After the positioning cylinder 61 drives the positioning pin 62 to move upward, when the positioning pin is inserted into the guide seat 63 on the rotating frame, the rotating frame stops running, and the brake 54 stops the brake disc 53, so that the rotating shaft of the reducer stops rotating immediately, and then the pre-bending mechanism 40 pre-bends the pipe and collects the material into the material basket. After the pre-bending work is completed, the rotating frame 20 is rotated to the collecting position (as shown in FIG. Figure 7 As shown), the pre-bending mechanism 40 is completely separated from the basket, and the loaded basket can be directly lifted away, or the tooling can be replaced.

[0030] It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these modifications and improvements all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A rotary pre-bending device, characterized in that: The invention comprises a rotating frame (20), a fixed seat (30), a pre-bending mechanism (40) and a driving mechanism (50); one end of the rotating frame (20) is rotatably connected to the upper part of the fixed seat (30) via a main shaft (57); the driving mechanism (50) is connected to the rotating frame (20) and can drive the rotating frame to rotate around the main shaft (57); and the pre-bending mechanism (40) is connected to the rotating frame (20); The fixed seat (30) is provided with a positioning mechanism (60), which can fix the rotating frame (20) at a preset position. The positioning mechanism (60) includes a positioning cylinder (61), a positioning pin (62) and a guide seat (63). The positioning cylinder (61) is vertically fixed on the fixed seat (30). The piston rod of the positioning cylinder is connected to a positioning pin (62). The fixed seat and the rotating frame are each provided with a guide seat (63). The positioning cylinder can drive the positioning pin to move up and down along the guide seat (63). The fixed seat (30) is provided with a supporting mechanism (70), which is used to support the rotating frame (20); When the pipe needs to be pre-bent and rolled, the rotating frame (20) and the pre-bending mechanism (40) are rotated to the working position, the pipe is pre-bent by the pre-bending mechanism (40) and then stored in the material basket, and then the rotating frame (20) is rotated to the material receiving position by the driving mechanism (50), so that the pre-bending mechanism (40) is completely separated from the material basket.

2. The rotary pre-bending device according to claim 1, characterized in that: The driving mechanism (50) comprises a rotating motor (51), a speed reducer (52), a pinion (55) and a gear (56); the rotating motor (51) is fixed on a fixed frame, the rotating motor is connected to the speed reducer, the rotating shaft on the speed reducer is connected to the pinion, the pinion (55) is meshed with the gear (56), and the gear (56) is fixedly connected to a rotating frame (20).

3. The rotary pre-bending device according to claim 2, characterized in that: It also includes a brake mechanism, which includes a brake disc (53) and a brake (54) that cooperate with each other. The brake disc (53) is arranged on the rotating shaft of the reducer, and the brake (54) is arranged on a rotating frame near the brake disc.

4. The rotary pre-bending device according to claim 1, characterized in that: The supporting mechanism (70) comprises a supporting frame (71), an inclined supporting wheel (72) and a second bearing (73); the supporting frame (71) is fixed on a fixed seat; an inclined supporting shaft is provided on the supporting frame (71); the inclined supporting wheel (72) is sleeved on the supporting shaft via the second bearing (73); and the surface of the inclined supporting wheel (72) is inclinedly fitted to the rotating frame (20).

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