A feeding assembly for a pipe bending machine

Abstract

This utility model relates to the field of pipe bending machine technology, specifically to a feeding component for a pipe bending machine, comprising: a feeding structure for directionally conveying pipe fittings to a preset position on the pipe bending machine; the component further includes a cleaning mechanism located upstream of the feeding structure for cleaning the pipe fittings, the cleaning mechanism comprising: a sleeve, the interior of which forms a channel for the axial passage of the pipe fittings. This utility model, by setting a mechanical scraping mechanism driven by a drive structure to rotate the shaft at high speed, can powerfully scrape off adhering substances from the surface of the pipe fittings, and utilizes an integrated blowing and adsorption structure to blow off particulate matter with high-pressure airflow and immediately adsorb and collect it with negative pressure airflow. It adopts a combination of mechanical scraping and pneumatic blowing and suction, operating continuously within a sealed sleeve channel, achieving efficient, thorough, and automated cleaning and dust collection, significantly protecting subsequent pipe bending molds and the working environment.

Description

Technical Field

[0001] This utility model relates to the field of pipe bending machine technology, and in particular to a feeding component for a pipe bending machine. Background Technology

[0002] Existing pipe bending machines are generally equipped with a matching feeding structure. Most copper pipes purchased from the market are in coil form. Before production and use, they need to go through processes such as straightening and fixed-length cutting by the feeding structure, and then be fed into the pipe bending machine for bending to obtain parts of specific shapes and specifications. At present, the feeding process mainly focuses on the continuity of feeding and positioning accuracy.

[0003] However, the aforementioned existing technologies have obvious drawbacks. During transportation and internal factory turnover, copper tubes are prone to the adhesion of contaminants such as dust and oil. After long-term use, the surface of the feeding rollers of the feeding structure will also be covered with these contaminants, which will reduce the effective friction coefficient between them and the copper tubes. Slippage is likely to occur during the pushing process, resulting in inaccurate feeding length. Ultimately, this will cause dimensional deviations in the bent tube products and increase the scrap rate. More seriously, if the contaminants contain hard particles such as metal shavings and sand, they will be pressed by the rollers and move relative to the surface of the copper tubes, producing a "grinding" effect on the tube walls, causing scratches and seriously affecting the appearance and quality of the products.

[0004] Therefore, there is an urgent need for an innovative solution that can efficiently and automatically clean the surface of copper tubes before they are fed into the tube bending machine, thereby fundamentally eliminating the damage of contaminants to the feeding accuracy and the surface of the tubes, and thus improving production yield and product reliability. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a feeding component for a pipe bending machine to solve the above-mentioned technical problems.

[0006] To achieve the above objectives, this utility model provides a feeding assembly for a pipe bending machine, comprising: The feeding structure is used to directionally convey the pipe fittings to the preset position of the pipe bending machine; The component also includes a cleaning mechanism located upstream of the feeding structure for cleaning the pipe fittings, the cleaning mechanism comprising: The sleeve has an internal channel for the pipe fitting to pass through axially; A rotating shaft is rotatably connected to the sleeve, and their axes coincide. A drive structure for driving the rotating shaft to rotate axially relative to the sleeve; A mechanical scraping structure, one end of which is connected to the rotating shaft and rotates with it, and the other end extends into the channel to scrape off the adhering substances on the surface of the pipe fitting by mechanical contact. The blowing and adsorption structure is used to generate negative pressure or high-pressure airflow acting on the surface of the pipe fitting, so as to first blow away the adhering material scraped off by the mechanical scraping structure from the surface of the pipe fitting and then adsorb and collect it.

[0007] As a preferred embodiment of this utility model, one end of the sleeve is provided with a first through hole, and the other end is provided with a bearing for rotatably connecting the shaft.

[0008] As a preferred embodiment of this utility model, the mechanical scraping structure includes: An eccentric rod is provided on the side of the rotating shaft facing the first through hole. The eccentric rod is offset from the axis of the rotating shaft and extends into the channel of the sleeve. The brush bristles are arranged along the length of the eccentric rod and contact the outer circumferential surface of the pipe fitting.

[0009] As a preferred embodiment of this invention, the blowing and adsorption structure includes: A blow-suction pump; The collar has an internal annular chamber for airflow. The inner groove of the collar is adapted to the annular groove on the outer circumference of the rotating shaft. A through groove connecting the annular chamber is provided on one side of the collar. The eccentric rod has a hollow chamber inside and multiple air holes are spaced apart along the length of the rod on the side facing the pipe. The rotating shaft has an air port on one side of the annular groove that connects the hollow chamber and the annular chamber. A connector, which is fixedly connected to the collar and communicates with the annular chamber, is used to connect the air pipe of the blow-suction pump.

[0010] As a preferred embodiment of this utility model, the sleeve has an internal thread groove at its end away from the first through hole, and a threaded nest is threadedly connected in the internal thread groove, and a bearing mounting groove for fixing the bearing is formed in the threaded nest.

[0011] As a preferred embodiment of this utility model, the sleeve is provided with an air groove with a communicating channel on its exterior, and the air groove is used to balance the pressure difference changes inside the sleeve.

[0012] As a preferred embodiment of this invention, the component further includes: A workbench, which is used to support the feeding structure; A bracket is provided on the workbench and is used to fix the sleeve.

[0013] As a preferred embodiment of this utility model, the driving structure includes: The motor is fixedly connected to the bracket; The belt pulley has two pulleys respectively located on the rotating shaft and the output shaft of the motor; A belt, which is fitted onto the two pulleys.

[0014] As a preferred technical solution of this utility model, the workbench is also provided with a sealed isolation chamber for covering the feeding structure and cleaning mechanism to isolate the external environment. The sealed isolation chamber has a feeding port and a discharging port for the pipe fittings to enter and exit the sealed isolation chamber.

[0015] The beneficial effects of this utility model are as follows: By setting up a mechanical scraping mechanism that drives the rotating shaft to rotate at high speed, this utility model can powerfully scrape off the adhering substances on the surface of the pipe fittings. It also utilizes an integrated blowing and adsorption structure to blow off particulate matter with high-pressure airflow and collect it instantly with negative pressure airflow. By combining mechanical scraping with pneumatic blowing and suction and operating continuously in a sealed sleeve channel, this utility model solves the problems of low efficiency, incomplete cleaning, easy dust dispersion, environmental pollution, and equipment damage caused by traditional cleaning methods. It achieves efficient, thorough, and automated cleaning and dust collection, significantly protecting the subsequent pipe bending mold and the working environment. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a top view of the structure of this utility model; Figure 2 This is a three-dimensional structural diagram of the workbench, support, and sleeve of this utility model; Figure 3 This is a half-sectional three-dimensional structural diagram of the bracket, sleeve, rotating shaft and eccentric rod of this utility model; Figure 4 This is a half-sectional structural diagram of the bracket, sleeve, rotating shaft, and eccentric rod of this utility model; Figure 5 For the present utility model Figure 4 Enlarged structural diagram at point A in the middle.

[0018] The following are marked in the diagram: 1. Workbench; 2. Sealed isolation chamber; 3. Feed port; 4. Discharge port; 5. Support; 6. Sleeve; 7. First through hole; 8. Threaded nest; 9. Bearing; 10. Shaft; 11. Second through hole; 12. Eccentric rod; 13. Brush bristles; 14. Pulley; 15. Motor; 16. Belt; 17. Annular groove; 18. Collar; 19. Connector; 20. Air port; 21. Air groove; 22. Air hole. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0020] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0021] like Figure 1 , Figure 2 and Figure 3 As shown, a feeding assembly for a pipe bending machine includes: a feeding structure for directionally conveying pipe fittings to a preset position on the pipe bending machine; the assembly also includes a cleaning mechanism located upstream of the feeding structure for cleaning the pipe fittings, the cleaning mechanism including: a sleeve 6, the inside of which forms a channel for the pipe fittings to pass through axially; a rotating shaft 10, which is rotatably connected to the sleeve 6 and the two axes coincide; a driving structure for driving the rotating shaft 10 to rotate axially relative to the sleeve 6; a mechanical scraping structure, one end of which is connected to the rotating shaft 10 and rotates with it, and the other end extends into the channel for mechanically scraping off the adhering substances on the surface of the pipe fittings; and a blowing and adsorption structure for generating a negative pressure or high-pressure airflow acting on the surface of the pipe fittings to first blow off the adhering substances scraped off by the mechanical scraping structure from the surface of the pipe fittings and then adsorb and collect them. The above-mentioned technical solution can solve the problems of low efficiency, incomplete cleaning, easy dust dispersion, environmental pollution, and equipment damage caused by traditional cleaning methods. Specifically, during operation, the pipe passes through the channel of the sleeve 6 axially. First, the drive structure drives the rotating shaft 10 to rotate at high speed, which in turn drives the mechanical scraping structure to rotate synchronously. The part of the mechanical scraping structure that extends into the channel powerfully removes oxide scale, oil, dust, and other adhering substances from the surface of the pipe through mechanical contact. Then, the blowing and adsorption structure is activated. The high-pressure airflow generated blows away the particles that have just been scraped off and are still attached to the surface of the pipe or suspended in the channel of the sleeve 6. Subsequently, the airflow is switched or another negative pressure airflow is used to quickly adsorb and collect these blown particles to prevent them from settling again. The cleaning efficiency is high, the effect is thorough, and the cleaning process can be sealed and the dust collection can be automated, thereby protecting the subsequent pipe bending mold and the working environment.

[0022] like Figure 3 and Figure 4 As shown, in this embodiment, one end of the sleeve 6 is provided with a first through hole 7, and the other end is provided with a bearing 9 for rotatably connecting the rotating shaft 10. The above technical solution can solve the problems of connection, support and sealing between rotating parts and fixed parts. Specifically, in this structure, the pipe enters the cleaning channel through the first through hole 7 at one end of the sleeve 6, and the rotating shaft 10 is rotatably connected to the sleeve 6 through the bearing 9 at the other end. This ensures that the rotating shaft 10 can be driven and rotate smoothly and stably relative to the fixed sleeve 6. At the same time, the bearing 9 provides the necessary support and sealing, ensuring the stable and reliable operation of the cleaning mechanism, reducing vibration and wear, and extending the service life of the equipment.

[0023] like Figure 3 and Figure 4 As shown, in this embodiment, the mechanical scraping structure includes: an eccentric rod 12, which is disposed on the side of the rotating shaft 10 facing the first through hole 7, the eccentric rod 12 is offset from the axis of the rotating shaft 10, and the eccentric rod 12 extends into the channel of the sleeve 6; and bristles 13, which are disposed along the length direction of the eccentric rod 12, and the bristles 13 contact the outer circumferential surface of the tube. The above technical solution can solve the problem of how to efficiently and comprehensively clean the circumferential surface of pipe fittings. Specifically, when the rotating shaft 10 rotates, it drives the eccentric rod 12 at its front end to revolve within the channel of the sleeve 6. Since the eccentric rod 12 is off-center, the bristles 13 mounted on it can sweep across the entire outer circumference of the pipe fitting through the channel with a certain trajectory, achieving cleaning without dead angles. The bristles 13 can be steel brushes or nylon brushes to adapt to the cleaning of attachments of different hardness. The cleaning range is large, the effect is uniform, the adaptability is strong, and the risk of damage to the surface of the pipe fitting is small.

[0024] like Figure 3 and Figure 4 as well as Figure 5 As shown, in this embodiment, the blowing and adsorption structure includes: a blowing and adsorption pump; a collar 18, which forms an annular chamber for airflow, the inner groove of the collar 18 is adapted to the annular groove 17 opened on the outer circumference of the rotating shaft 10, a through groove communicating with the annular chamber is opened on one side of the collar 18, the eccentric rod 12 forms a hollow chamber inside and a plurality of air holes 22 are spaced apart along the length of the rod on the side facing the pipe, and the rotating shaft 10 has an air port 20 communicating with the hollow chamber and the annular chamber on one side of the annular groove 17; a connector 19, which is fixedly connected to the collar 18 and communicates with the annular chamber, and the connector 19 is used to connect the air pipe of the blowing and adsorption pump. The above technical solution can solve the technical problem of how to integrate dynamic airflow jetting and adsorption functions on a rotating cleaning component. Specifically, the working principle of this structure is as follows: the blow-suction pump provides high-pressure or negative-pressure airflow to the annular chamber of the fixed collar 18 through the air pipe and connector 19. The airflow passes through the through groove on the side of the collar 18, and enters the hollow chamber of the rotating eccentric rod 12 through the rotating air passage interface formed by the annular groove 17 and air port 20 on the rotating shaft 10. Finally, it is ejected or sucked out from the air hole 22. The matching design of the collar 18 and the rotating shaft 10 realizes the airflow transmission from the stationary component to the rotating component. The airflow output point closely follows the scraping point, the cleaning is timely and efficient, the system integration is high and the structure is compact.

[0025] like Figure 3 and Figure 4 As shown, in this embodiment, the sleeve 6 has an internal thread groove at the end away from the first through hole 7, and a threaded nest 8 is threadedly connected in the internal thread groove. A bearing mounting groove for fixing the bearing 9 is formed in the threaded nest 8. The above technical solution can solve the problems of convenient installation, accurate positioning and subsequent maintenance and replacement of bearing 9. Specifically, during installation, bearing 9 is first pressed into the bearing mounting groove of threaded nest 8, and then the entire set of threaded nest 8 is screwed into the internal thread groove at the end of sleeve 6 and tightened, thereby fixing and encapsulating bearing 9 in sleeve 6, simplifying the assembly process, improving coaxiality accuracy, facilitating disassembly and maintenance and reducing maintenance costs.

[0026] like Figure 3 and Figure 4 As shown, in this embodiment, the sleeve 6 is provided with an air groove 21 with a communicating channel on the outside. The air groove 21 is used to balance the pressure difference change inside the sleeve 6. The above technical solution can solve the problems of increased pipe conveying resistance, airflow turbulence, and decreased cleaning efficiency caused by pressure accumulation or vacuum in a sealed environment. Specifically, when the blowing and adsorption structure is working, the air pressure in the internal channel of the sleeve 6 will change. The air groove 21 set on the outer wall of the sleeve 6 makes the channel slightly connected to the external atmosphere or collection system, which can balance the internal positive and negative pressure difference generated by airflow injection and suction, ensure smooth pipe conveying, stabilize the internal airflow field, and optimize the cleaning and collection effect.

[0027] like Figure 1 and Figure 2 As shown, in this embodiment, the component further includes: a workbench 1, which is used to support the feeding structure; and a support 5, which is disposed on the workbench 1 and used to fix the sleeve 6. The above technical solution can solve the positioning and support problem of the cleaning mechanism. Specifically, the workbench 1 serves as the basic platform of the entire feeding assembly, providing a stable mounting base for the feeding structure and the cleaning mechanism. The bracket 5 is fixedly installed on the workbench 1, and its upper part precisely clamps and fixes the sleeve 6 to ensure the alignment of the cleaning channel with the subsequent feeding path, ensure the overall rigidity of the equipment, reduce working vibration, and ensure the stable and reliable transmission of pipes and the cleaning process.

[0028] like Figure 1 and Figure 2 As shown, in this embodiment, the drive structure includes: a motor 15, which is fixedly connected to the bracket 5; a pulley 14, having two pulleys respectively disposed on the output shaft of the rotating shaft 10 and the motor 15; and a belt 16, which is sleeved on the two pulleys 14. The above technical solution can solve the problems of excessive coaxiality requirements and insufficient overload protection that may exist in direct drive. Specifically, during operation, the motor 15 is started, and its output shaft rotates, driving the pulley 14 on it to rotate. Through the transmission of the belt 16, another pulley 14 installed on the rotating shaft 10 is driven to rotate synchronously, thereby transmitting power to the rotating shaft 10. The transmission is smooth, the noise is low, it has a buffering and vibration absorption effect, and the output speed can be adjusted by selecting the diameter ratio of the pulley 14.

[0029] like Figure 1 As shown, in this embodiment, the workbench 1 is also provided with a sealed isolation chamber 2 for covering the feeding structure and cleaning mechanism to isolate the external environment. The sealed isolation chamber 2 has a feeding port 3 and a discharging port 4 for the pipe fittings to enter and exit the sealed isolation chamber 2. The above technical solution can solve the problem of pollution to the workshop environment during the cleaning process. Specifically, when the equipment is running, the entire feeding structure and cleaning mechanism are sealed inside the sealed isolation chamber 2. The pipe enters from the feed port 3, and after cleaning and feeding are completed, it is sent out from the discharge port 4 to the pipe bending machine. The sealed isolation chamber 2 effectively isolates the dust and noise that may be generated during the cleaning process from the external working environment, resulting in the technical effect of protecting the health of operators, meeting environmental protection requirements, and keeping the inside of the equipment clean and reducing external interference.

[0030] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0031] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A feeding assembly for a pipe bending machine, comprising: The feeding structure is used to directionally convey the pipe fittings to the preset position of the pipe bending machine; The component is characterized in that it further includes a cleaning mechanism disposed upstream of the feeding structure for cleaning the pipe fittings, the cleaning mechanism comprising: The sleeve (6) has an internal channel for the pipe fitting to pass through axially; A rotating shaft (10) is rotatably connected to the sleeve (6) and their axes coincide; A drive structure for driving the rotating shaft (10) to rotate axially relative to the sleeve (6); A mechanical scraping structure, one end of which is connected to the rotating shaft (10) and rotates with it, and the other end extends into the channel to scrape off the adhering material on the surface of the pipe fitting in a mechanical contact manner; The blowing and adsorption structure is used to generate negative pressure or high-pressure airflow acting on the surface of the pipe fitting, so as to first blow away the adhering material scraped off by the mechanical scraping structure from the surface of the pipe fitting and then adsorb and collect it.

2. The feeding assembly of the pipe bending machine according to claim 1, characterized in that, The sleeve (6) has a first through hole (7) at one end and a bearing (9) for rotatably connecting the shaft (10) at the other end.

3. The feeding assembly of the pipe bending machine according to claim 2, characterized in that, The mechanical scraping structure includes: An eccentric rod (12) is provided on the side of the rotating shaft (10) facing the first through hole (7). The eccentric rod (12) is offset from the axis of the rotating shaft (10). The eccentric rod (12) extends into the channel of the sleeve (6). The bristles (13) are arranged along the length of the eccentric rod (12) and the bristles (13) contact the outer circumferential surface of the pipe.

4. The feeding assembly of the pipe bending machine according to claim 3, characterized in that, The blowing and adsorption structure includes: A blow-suction pump; The collar (18) forms an annular chamber for airflow. The inner groove of the collar (18) is adapted to the annular groove (17) on the outer circumference of the rotating shaft (10). A through groove connecting the annular chamber is provided on one side of the collar (18). The eccentric rod (12) forms a hollow chamber and has multiple air holes (22) spaced apart along the length of the rod on the side facing the pipe. The rotating shaft (10) has an air port (20) connecting the hollow chamber and the annular chamber on one side of the annular groove (17). The connector (19) is fixedly connected to the collar (18) and communicates with the annular chamber. The connector (19) is used to connect the air pipe of the blow-suction pump.

5. The feeding assembly of the pipe bending machine according to claim 4, characterized in that, The sleeve (6) has an internal thread groove at one end away from the first through hole (7), and a threaded nest (8) is threadedly connected in the internal thread groove. A bearing mounting groove for fixing the bearing (9) is formed in the threaded nest (8).

6. The feeding assembly of the pipe bending machine according to claim 5, characterized in that, The sleeve (6) is provided with an air groove (21) with a connecting channel on the outside. The air groove (21) is used to balance the pressure difference change inside the sleeve (6).

7. The feeding assembly of the pipe bending machine according to any one of claims 1-6, characterized in that, The component also includes: Workbench (1), which is used to support the feeding structure; A bracket (5) is provided on the workbench (1) and is used to fix the sleeve (6).

8. The feeding assembly of the pipe bending machine according to claim 7, characterized in that, The driving structure includes: The motor (15) is fixedly connected to the bracket (5); The pulley (14) has two pulleys respectively located on the output shaft of the rotating shaft (10) and the motor (15); A belt (16) is fitted onto the two belt reels (14).

9. The feeding assembly of the pipe bending machine according to claim 8, characterized in that, The workbench (1) is also provided with a sealed isolation chamber (2) for covering the feeding structure and cleaning mechanism to isolate the external environment. The sealed isolation chamber (2) has a feeding port (3) and a discharging port (4) for pipe fittings to enter and exit the sealed isolation chamber (2).

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