An automatic weighing and packaging equipment for pipe fittings

Abstract

This application provides an automatic weighing and packaging device for pipe fittings, including a conveyor roller assembly, a weighing component, a specification identification device, a rejection component, and a strapping and packaging component arranged sequentially along the pipe fitting conveying direction. The pipe fittings are placed inside a carton. The weighing component includes a conveyor belt, an electronic scale integrated into the bottom of the conveyor belt, and a centering mechanism. The centering mechanism includes a guide component and an alignment component arranged sequentially along the conveyor belt conveying direction. The guide component guides the carton towards the axis of the conveyor belt, and the alignment component aligns the carton so that the front end of the carton is aligned with the specification identification device. The device provided by this application can weigh the pipe fittings inside the carton during the carton conveying process and can reject cartons with non-compliant weights.

Description

Technical Field

[0001] This disclosure generally relates to the field of pipe fitting packaging technology, and specifically to an automatic weighing and packaging device for pipe fittings. Background Technology

[0002] In the existing field of pipe fitting packaging technology, traditional pipe fitting production workshops face numerous challenges in the packaging process. Finished pipe fittings must be manually weighed before being conveyed to the packaging area via conveyor belt. Upon arrival, packaging workers must move the fittings to a packaging machine for packaging, followed by manual stacking. This traditional production model has significant drawbacks: firstly, it results in substantial labor waste, as each fitting undergoes multiple manual handling processes, including weighing, loading, and stacking on the packaging machine, leading to high labor input; secondly, manual weighing is not only inefficient but also prone to errors due to human factors, affecting the accuracy of product quality inspection. Utility Model Content

[0003] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide an automatic weighing and packaging device for pipe fittings to solve the above problems.

[0004] This application provides an automatic weighing and packaging device for pipe fittings, comprising a conveyor roller assembly, a weighing component, a specification identification device, a rejection component, and a strapping and packaging component arranged sequentially along the conveying direction of the pipe fittings, wherein the pipe fittings are placed in a carton: The weighing assembly includes a conveyor belt, an electronic scale integrated at the bottom of the conveyor belt, and a centering mechanism. The centering mechanism includes a guide assembly and an alignment assembly arranged sequentially along the conveyor belt conveying direction. The guide assembly is used to guide the carton in a direction close to the axis of the conveyor belt, and the alignment assembly aligns the carton so that the front end of the carton is aligned with the specification recognition device.

[0005] According to the technical solution provided in the embodiments of this application, a first support is installed on the frame of the conveyor belt, and the guide assembly is installed on the first support. The guide assembly includes: Two guide plates are respectively disposed on both sides of the conveyor belt, and one end of the guide plates is rotatably mounted in the first bracket via a rotating shaft, the axis of the rotating shaft being perpendicular to the top surface of the conveyor belt; The first motor is installed inside the first bracket and suspended above the conveyor belt. The two output ends of the first motor are respectively connected to the two rotating shafts for synchronously driving the two rotating shafts to rotate.

[0006] According to the technical solution provided in the embodiments of this application, a plurality of guide rollers are arranged on the side of the guide plate near the axis of the conveyor belt. The guide rollers are rotatably mounted on the mounting base. The mounting base is embedded in the guide plate and slidably connected to the guide plate. The sliding direction is perpendicular to the extension direction of the guide plate. A buffer spring is provided between the inner side of the sliding base and the guide plate.

[0007] According to the technical solution provided in the embodiments of this application, a second bracket is installed on the frame of the conveyor belt, and the alignment component is installed on the second bracket. The alignment component includes: Two push plates are suspended above the conveyor belt and respectively mounted on the top of the second bracket via connecting rods, the connecting rods being slidably connected to the second bracket; A bidirectional lead screw is rotatably mounted on the top of the second bracket, and the bidirectional lead screw passes through two connecting rods respectively and is threadedly connected to the connecting rods. The second motor is connected to one end of the bidirectional lead screw and is used to drive the two push plates to move closer to or further away from each other.

[0008] According to the technical solution provided in the embodiments of this application, the rejection component includes: A transition roller assembly, the front end of which is connected to the conveyor belt, and the rear end of which is connected to the strapping and packaging assembly; A telescopic top plate is provided on one side of the transition roller assembly, and the telescopic direction of the telescopic top plate is perpendicular to the conveying direction of the transition roller assembly. The rejection roller group is located on the side of the transition roller group away from the telescopic top plate, and the conveying direction is perpendicular to the conveying direction of the transition roller group.

[0009] According to the technical solution provided in the embodiments of this application, the rejection roller group is inclined, and the height of the rejection roller group near the transition roller group is higher than the height of the end away from the transition roller group.

[0010] According to the technical solution provided in the embodiments of this application, the specification identification device is suspended above the transition roller group and is used to scan the label on the carton to determine the specifications of the carton.

[0011] According to the technical solution provided in the embodiments of this application, a transparent protective cover is provided above the conveyor belt.

[0012] According to the technical solution provided in the embodiments of this application, anti-slip rubber strips are respectively provided on the side of the two push plates that are close to each other.

[0013] Compared with existing technologies, the advantages of this application are as follows: By integrating an electronic scale at the bottom of the conveyor belt, the weighing of cartons can be automatically completed during the conveying process, avoiding the errors and inefficiencies of manual weighing; by setting up a specification recognition device, a rejection component, and a strapping and packing component, when the specifications of the cartons identified by the specification recognition device do not match the weighing of the electronic scale, the unqualified cartons are rejected by the ejection component, while the qualified cartons are packed by the strapping and packing component; by setting up a guide component, the cartons can be moved closer to the center of the conveyor belt during the movement, thereby ensuring that the weighing results of the electronic scale are more accurate; by setting up an alignment component, the cartons can be aligned during the movement, so that the specification recognition device can more accurately identify the specifications of the cartons. Attached Figure Description

[0014] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 A top view of the automatic weighing and packaging equipment for pipe fittings provided in this application; Figure 2 A side view of the automatic weighing and packaging equipment for pipe fittings provided in this application; Figure 3 This is a schematic diagram of the guide component. Figure 4 This is a schematic diagram showing the relative positions of the guide roller and the guide plate. Figure 5 This is a schematic diagram of the structure of the positive component.

[0015] Reference numerals: 1. Conveyor roller assembly; 2. Specification identification device; 3. Conveyor belt; 4. First support; 5. Guide plate; 6. Rotating shaft; 7. First motor; 8. Guide roller; 9. Mounting base; 10. Buffer spring; 11. Second support; 12. Push plate; 13. Connecting rod; 14. Two-way lead screw; 15. Second motor; 16. Transition roller assembly; 17. Telescopic top plate; 18. Removal roller assembly; 19. Transparent protective cover; 20. Strapping and packaging machine; 21. Strapping and packaging roller assembly; 22. Cantilever; 23. Limiting groove. Detailed Implementation

[0016] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0017] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0018] Please refer to Figures 1-5 This application provides an automatic weighing and packaging device for pipe fittings, including a conveyor roller group 1, a weighing component, a specification identification device 2, a rejection component, and a strapping and packaging component arranged sequentially along the conveying direction of the pipe fittings, wherein the pipe fittings are placed in a carton. The weighing assembly includes a conveyor belt 3, an electronic scale integrated at the bottom of the conveyor belt 3, and a centering mechanism. The centering mechanism includes a guide assembly and an alignment assembly arranged sequentially along the conveying direction of the conveyor belt 3. The guide assembly is used to guide the carton in a direction close to the axis of the conveyor belt 3, and the alignment assembly aligns the carton so that the front end of the carton is aligned with the specification identification device 2.

[0019] Specifically, the conveyor roller assembly 1 consists of multiple rollers. The conveyor roller assembly 1 is used to convey the carton containing the pipe fittings at the remote end to the weighing component for weighing. Figure 1 The conveyor roller assembly 1 shown is relatively short; the actual length and transmission direction of the conveyor roller assembly 1 can be set according to requirements. The front end of the conveyor belt 3 connects to the conveyor roller assembly 1, and the end of the conveyor belt 3 connects to the rejection assembly. An electronic scale is located at the bottom of the conveyor belt 3. When the carton moves onto the conveyor belt 3, the actual weight of the pipe fittings inside the carton can be determined based on the pressure exerted by the carton on the conveyor belt 3. During the carton weighing process, the specification identification device 2 identifies the specifications of the carton, determining the weight of the pipe fittings to be contained within. Both the specification identification device 2 and the electronic scale are connected to a controller. When the carton's specifications do not match its actual weight, the controller controls the rejection assembly to reject the carton, thus eliminating defective products. Qualified products are then conveyed to the strapping and packaging assembly for packaging after passing through the rejection assembly. The strapping and packaging assembly consists of a strapping and packaging machine 20 and a strapping and packaging roller assembly 21. The strapping and packaging roller assembly 21 supports and conveys the carton, while the strapping and packaging machine 20 packages the carton during the conveying process. The strapping and packaging machine 20 is existing equipment, and will not be described in detail here.

[0020] To improve the accuracy of carton weight detection and specification recognition, a centering mechanism is also installed on conveyor belt 3. This mechanism consists of a guide component and an alignment component. As the carton moves along conveyor belt 3, it first passes through the guide component. Under the guidance of the guide component, the carton continuously moves closer to the axis of conveyor belt 3, ensuring that the carton is weighed at the center of the electronic scale, thus improving weighing accuracy. After passing the guide component, the carton reaches the alignment component. The alignment component's alignment ensures that the end of the carton displaying its specifications is directly aligned with the specification recognition device 2, thereby improving the accuracy of carton specification recognition.

[0021] Furthermore, a first support 4 is mounted on the frame of the conveyor belt 3, and the guide assembly is mounted on the first support 4. The guide assembly includes: Two guide plates 5 are respectively disposed on both sides of the conveyor belt 3, and one end of the guide plates 5 is rotatably installed in the first bracket 4 through a rotating shaft 6. The axis of the rotating shaft 6 is perpendicular to the top surface of the conveyor belt 3. The first motor 7 is installed inside the first bracket 4 and suspended above the conveyor belt 3. The two output ends of the first motor 7 are respectively connected to the two rotating shafts 6 for synchronously driving the two rotating shafts 6 to rotate.

[0022] Specifically, the first support 4 is an inverted U-shaped support, mounted above the conveyor belt 3 with both ends fixed to the sides of the conveyor belt 3 frame. At each end of the first support 4 perpendicular to the surface of the conveyor belt 3, a guide plate 5 is provided. The guide plate 5 extends in a direction parallel to the surface of the conveyor belt 3, with one end extending into the interior of the first support 4 and fixed to a rotating shaft 6 inside the first support 4. The axis of the rotating shaft 6 is perpendicular to the surface of the conveyor belt 3. One end of the rotating shaft 6 is rotatably connected to the interior of the first support 4, and the other end is connected to the output shaft of the first motor 7 via a bevel gear transmission. The first motor 7 is a dual-output shaft motor, used to simultaneously drive the two rotating shafts 6 to rotate, thereby adjusting the angle between the extension direction of the two guide plates 5 and the transmission direction of the conveyor belt 3.

[0023] As the carton moves along the conveyor belt 3, it comes into contact with the guide plate 5 and is guided by the guide plate 5 to move towards the axis of the conveyor belt 3, thus centering the carton. The distance between the free ends of the two guide plates 5 can be used to limit the size of the carton that can pass through, so different sizes of cartons can be accommodated by adjusting the rotation angle of the two guide plates 5.

[0024] Furthermore, a plurality of guide rollers 8 are arranged on the side of the guide plate 5 near the axis of the conveyor belt 3. The guide rollers 8 are rotatably mounted on the mounting base 9. The mounting base 9 is embedded in the guide plate 5 and slidably connected to the guide plate 5. The sliding direction is perpendicular to the extension direction of the guide plate 5. A buffer spring 10 is provided between the inner side of the sliding base and the guide plate 5.

[0025] Specifically, multiple grooves are formed on the inner side of the guide plate 5, and mounting seats 9 are embedded in the grooves. The mounting seats 9 can slide within the grooves, with the sliding direction perpendicular to the extension direction of the guide plate 5 and parallel to the surface of the conveyor belt 3. A guide roller 8 is rotatably mounted on each mounting seat 9. The axis of the guide roller 8 is perpendicular to the surface of the conveyor belt 3. The guide roller 8 is designed so that the carton will contact the guide roller 8 when it approaches the guide plate 5. The rotation of the guide roller 8 reduces the friction force when guiding the carton and improves the smoothness of guiding the carton. A buffer spring 10 is also provided in the groove. One end of the buffer spring 10 is fixed to the innermost end of the groove, and the other end of the buffer spring 10 is fixed to the mounting seat 9. The buffer spring 10 can buffer the carton when it contacts the guide roller 8 and can reset the guide roller 8 after the carton leaves the guide roller 8.

[0026] Furthermore, a second bracket 11 is mounted on the frame of the conveyor belt 3, and the alignment component is mounted on the second bracket 11. The alignment component includes: Two push plates 12 are suspended above the conveyor belt 3 and respectively mounted on the top of the second bracket 11 via connecting rods 13. The connecting rods 13 are slidably connected to the second bracket 11. A bidirectional lead screw 14 is rotatably mounted on the top of the second bracket 11. The bidirectional lead screw 14 passes through the two connecting rods 13 respectively and is threadedly connected to the connecting rods 13. The second motor 15 is connected to one end of the bidirectional lead screw 14 and is used to drive the two push plates 12 to move closer to or further away from each other.

[0027] Specifically, the second support 11 is an inverted U-shaped support. The second support 11 is mounted above the conveyor belt 3, with both ends fixed to the sides of the conveyor belt 3 frame. The second support 11 is located on the side of the first support 4 furthest from the conveyor roller group 1. A bidirectional lead screw 14 is mounted on the top of the second support 11. The extension direction of the bidirectional lead screw 14 is perpendicular to the conveying direction of the conveyor belt 3. One end of the bidirectional lead screw 14 is rotatably connected to the second support 11, and the other end is connected to the output shaft of the second motor 15. A connecting rod 13 is connected to each of the two threaded sections of the bidirectional lead screw 14 with different screw directions. The connecting rod 13 is an L-shaped rod. One end of the connecting rod 13 is sleeved on the bidirectional lead screw 14 and threadedly connected to it. The other end of the connecting rod 13 is connected to a push plate 12. A limiting groove 23 is provided below the top of the second support 11. The limiting groove 23 extends along the conveying direction perpendicular to the conveyor belt 3. Through the cooperation of the limiting groove 23 and the bidirectional lead screw 14, the two push plates 12 can move closer to each other or further away from each other along the conveying direction perpendicular to the conveyor belt 3. Thus, when the carton passes between the two push plates 12, controlling the two push plates 12 to move closer to each other can straighten the carton.

[0028] Furthermore, the rejection component includes: Transition roller assembly 16, the front end of which is connected to the conveyor belt 3, and the rear end of which is connected to the strapping and packaging assembly; Telescopic top plate 17, the telescopic top plate 17 is disposed on one side of the transition roller group 16, and the telescopic direction of the telescopic top plate 17 is perpendicular to the conveying direction of the transition roller group 16; The rejection roller group 18 is located on the side of the transition roller group 16 away from the telescopic top plate 17, and the conveying direction is perpendicular to the conveying direction of the transition roller group 16.

[0029] Specifically, the transition roller group 16 consists of multiple rollers. The front end of the transition roller group 16 connects to the end of the conveyor belt 3, and the end of the transition roller group 16 connects to the front end of the strapping and packaging roller group 21. A telescopic top plate 17 is provided on the frame on one side of the transition roller group 16. The telescopic top plate 17 is controlled by a cylinder to extend and retract, and the cylinder is connected to a controller. On the other side of the transition roller group 16, a rejection roller group 18 is provided, which consists of multiple rollers. When the size of the carton does not match the actual weight, the controller controls the cylinder to push the telescopic top plate 17 out, thereby pushing the carton on the transition roller group 16 toward the rejection roller group 18. The carton is then removed by the rejection roller group 18, and the removed carton is subsequently manually inspected by the operator.

[0030] Furthermore, the rejection roller group 18 is inclined, and the height of the rejection roller group 18 near the transition roller group 16 is higher than the height of the end away from the transition roller group 16.

[0031] Specifically, the rejection roller group 18 forms a downward slope from the side close to the transition roller group 16 to the side away from the transition roller group 16, which makes it easier for the carton to be rejected by the rejection roller group 18.

[0032] Furthermore, the specification identification device 2 is suspended above the transition roller assembly 16 and is used to scan the label on the carton to determine the specifications of the carton.

[0033] Specifically, a cantilever 22 is installed on the frame on the side of the transition roller assembly 16 where the telescopic top plate 17 is located. The cantilever 22 extends above the transition roller assembly 16, and the specification identification device 2 is installed on the cantilever 22, so that the specification of the carton can be easily identified without affecting the carton conveying.

[0034] Furthermore, a transparent protective cover 19 is provided above the conveyor belt 3.

[0035] Specifically, the transparent protective cover 19 is fixed to the frame on both sides of the conveyor belt 3. The transparent protective cover 19 covers the entire conveyor belt 3, and the guide assembly and alignment assembly are also placed inside the transparent protective cover 19. The transparent protective cover 19 has openings at the front and rear ends of the conveyor belt 3 to facilitate the passage of cartons. By setting up the transparent protective cover 19, foreign objects can be prevented from falling onto the conveyor belt 3 and affecting the weighing of cartons, and the transparent material allows for observation of the surface of the conveyor belt 3.

[0036] Furthermore, anti-slip rubber strips are provided on the sides of the two push plates 12 that are close to each other.

[0037] Specifically, the anti-slip strip increases the friction between the push plate 12 and the carton, preventing slight slippage of the push plate 12 during the alignment of the carton and improving the efficiency of the carton.

[0038] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A pipe automatic weighing and packing device, characterized in that, The components include a conveyor roller assembly (1), a weighing assembly, a specification identification device (2), a rejection assembly, and a strapping and packaging assembly arranged sequentially along the conveying direction of the pipe fitting. The pipe fitting is placed in a cardboard box. The weighing assembly includes a conveyor belt (3), an electronic scale integrated at the bottom of the conveyor belt (3), and a centering mechanism. The centering mechanism includes a guide assembly and an alignment assembly arranged sequentially along the conveying direction of the conveyor belt (3). The guide assembly is used to guide the carton in a direction close to the axis of the conveyor belt (3), and the alignment assembly aligns the carton so that the front end of the carton is aligned with the specification identification device (2).

2. The automatic weighing and packing apparatus for pipes according to claim 1, characterized in that, A first support (4) is mounted on the frame of the conveyor belt (3), and the guide assembly is mounted on the first support (4). The guide assembly includes: Two guide plates (5) are respectively located on both sides of the conveyor belt (3), and one end of the guide plates (5) is rotatably installed in the first bracket (4) through a rotating shaft (6). The axis of the rotating shaft (6) is perpendicular to the top surface of the conveyor belt (3). The first motor (7) is installed in the first bracket (4) and suspended above the conveyor belt (3). The two output ends of the first motor (7) are respectively connected to the two rotating shafts (6) for synchronously driving the two rotating shafts (6) to rotate.

3. The automatic weighing and packing apparatus for pipe fittings according to claim 2, characterized in that, Multiple guide rollers (8) are arranged on one side of the guide plate (5) near the axis of the conveyor belt (3). The guide rollers (8) are rotatably mounted on the mounting base (9). The mounting base (9) is embedded in the guide plate (5) and slidably connected to the guide plate (5). The sliding direction is perpendicular to the extension direction of the guide plate (5). A buffer spring (10) is provided between the inner side of the mounting base (9) and the guide plate (5).

4. The automatic weighing and packing apparatus for pipe fittings according to claim 3, characterized in that, A second bracket (11) is mounted on the frame of the conveyor belt (3), and the alignment component is mounted on the second bracket (11). The alignment component includes: Two push plates (12) are suspended above the conveyor belt (3) and respectively mounted on the top of the second bracket (11) via connecting rods (13), the connecting rods (13) being slidably connected to the second bracket (11); A bidirectional lead screw (14) is rotatably mounted on the top of the second bracket (11). The bidirectional lead screw (14) passes through the two connecting rods (13) respectively and is threadedly connected to the connecting rods (13). The second motor (15) is connected to one end of the bidirectional lead screw (14) and is used to drive the two push plates (12) to move closer to each other or further away from each other.

5. The automatic weighing and packing apparatus for pipe fittings according to claim 4, characterized in that, The rejection component includes: Transition roller assembly (16), the front end of which is connected to the conveyor belt (3), and the rear end of which is connected to the strapping and packaging assembly; A telescopic top plate (17) is arranged on one side of the transition roller group (16), and the telescopic direction of the telescopic top plate (17) is perpendicular to the conveying direction of the transition roller group (16); A rejection roller group (18) is arranged on the side of the transition roller group (16) away from the telescopic top plate (17), and the conveying direction of the rejection roller group (18) is perpendicular to the conveying direction of the transition roller group (16).

6. The automatic weighing and packing apparatus for pipe fittings according to claim 5, characterized in that, The rejection roller group (18) is arranged in an inclined manner, and the height of the rejection roller group (18) near one end of the transition roller group (16) is higher than the height of the rejection roller group (18) away from the one end of the transition roller group (16).

7. The automatic pipe weighing and packing apparatus according to claim 6, wherein The specification identification device (2) is suspended above the transition roller group (16) and is used for scanning the label on the carton to determine the specification of the carton.

8. The automatic pipe weighing and packing apparatus according to claim 7, characterized in that, A transparent protective cover (19) is arranged above the conveying belt (3).

9. The automatic pipe weighing and packing apparatus according to claim 8, characterized in that, The two push plates (12) are respectively provided with anti-skid rubber strips on the sides close to each other.

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