An automatic weighing device

Abstract

The present invention discloses an automatic weighing device, which belongs to the field of billet weighing technology, and includes a spraying area, a drying area, a weighing area and a conveyor belt. The spraying area is used to clean the billet. The drying area is used to dry the billet. The weighing area is used to weigh the billet. The spraying area, the drying area and the weighing area are arranged in sequence along the conveying direction of the conveyor belt, and the weighing area is separated from the conveyor belt. During the conveying process of the billet on the conveyor belt, the aluminum chips on the surface of the billet are removed in sequence through the spraying area, the water stains on the surface of the billet are blown away and dried through the drying area, and then the billet is transported to the weighing area for weighing, thereby eliminating the influence of the weight of the aluminum chips on the billet weighing accuracy. Since there is no structure for directly transmitting internal force between the weighing area and the conveyor belt, the vibration generated by the conveyor belt equipment will not be transmitted to the weighing area, thereby ensuring the environmental stability of the weighing area, thereby improving the weighing accuracy of the weighing area.

Description

Technical Field

[0001] The invention belongs to the technical field of blank weighing, in particular to an automatic weighing device. Background Art

[0002] The automotive air-conditioning compressor is the core component of the automotive air-conditioning system. The scroll compressor has been widely used in the field of automotive air-conditioning compressors due to its compact structure, stable operation, high efficiency, etc. The scroll disk is a key component of the scroll compressor, and its quality directly affects the operating accuracy, noise control and energy consumption performance of the compressor.

[0003] The manufacturing process of scroll disks usually includes casting, machining and assembly. In the production process, the quality control of scroll disk blanks is particularly important, because the quality difference of blanks may lead to geometric errors and uneven material properties in the subsequent processing, which in turn affects the quality of the final product. Therefore, weighing and testing the scroll disk blanks before processing can timely screen out unqualified blanks to avoid waste of resources, increase processing costs and reduce processing quality.

[0004] At present, in order to make the weighing of the scroll blank of the automobile air-conditioning compressor accurate and improve the quality and consistency of the final product, a series of improvements have been made in the existing technology to address the problems of low efficiency, high labor intensity, high cost of manual weighing, and poor traceability of weighing data in traditional manual weighing. The patent with announcement number CN210089831U discloses an intelligent weighing system that uses a mechanical arm and machine vision for weighing. This method can achieve continuous weighing of products, but the cost is high and the weighing efficiency is low. The patent with announcement number CN220810865U discloses a weighing conveyor belt. This method allows items to be transported through a conveyor belt, and a weighing instrument is provided under the conveyor belt. When the items pass through the weighing instrument, the weight of the items is detected. However, this method does not take into account the interference of factors such as impurities on the surface of the blank, external air flow, and vibration of the conveyor belt on the weighing, resulting in the weighing accuracy being affected. Summary of the invention

[0005] The object of the present invention is to provide an automatic weighing device to solve the problems raised in the above-mentioned prior art.

[0006] An automatic weighing device is provided, comprising:

[0007] A spraying area, which is used to clean the blank;

[0008] A drying area, which is used to dry the blank;

[0009] A weighing area, which is used to weigh the blank;

[0010] The conveyor belt, the spraying area, the drying area and the weighing area are arranged in sequence along the conveying direction of the conveyor belt, and the weighing area is separated from the conveyor belt.

[0011] As a further solution of the present invention: the spray area includes a spray component and a first cover body, and the output end of the spray component is located between the first cover body and the conveyor belt. The spray area adopts a spray component in combination with the first cover body design, provides cleaning liquid through the nozzle and effectively controls the cleaning range to avoid overflow of the cleaning liquid. The spray component ensures that impurities (such as aluminum chips) on the surface of the blank can be effectively removed, and the closed design of the first cover body further reduces the risk of environmental pollution, ensuring the efficiency and controllability of the cleaning process.

[0012] As a further solution of the present invention: the spray assembly includes a spray head, a water pump, a first filter, a water tank, a reflux port and a second filter which are interconnected, the reflux port is used to collect waste liquid, the second filter is arranged inside the water tank and is connected to the reflux port, and the first filter is connected to the cavity between the water tank and the second filter. The reflux port, the filter and the water tank are arranged inside the spray assembly to form a circulating water system, and the impurities in the waste liquid are removed by the filter and then recycled. The consumption of cleaning liquid is significantly reduced, and the production cost is reduced.

[0013] As a further solution of the present invention: the conveyor belt is a mesh structure. The mesh structure can smoothly guide the cleaning liquid through the mesh, avoiding a large amount of water stains on the surface of the conveyor belt and the bottom of the blank.

[0014] As a further solution of the present invention: the spray assembly has at least one output end, the vertical elevation of which is lower than the top elevation of the conveyor belt. In addition to cleaning the top surface of the billet, this structure can also clean the bottom surface of the billet, thereby achieving the effect of fully removing aluminum chips and improving the weighing accuracy of the billet.

[0015] As a further solution of the present invention: the drying area includes a blowing assembly and a second cover, and the output end of the blowing assembly is located between the second cover and the conveyor belt. The closed design of the second cover can prevent the splashing of the blown water stains, while retaining the surrounding heat to the greatest extent, thereby improving the drying efficiency of the blanks.

[0016] As a further solution of the present invention: the blowing assembly includes a blowing head, an electric heat resistance wire and an air source, the blowing head is connected to the air source, and the electric heat resistance wire is arranged inside the blowing head. The blank is quickly dried by the heated air flow, and the residual moisture on the surface of the blank is quickly and efficiently removed, thereby improving the drying efficiency and shortening the production time.

[0017] As a further solution of the present invention: the weighing area includes a load-bearing platform, a transmission assembly and a weighing sensor. The load-bearing platform is arranged opposite to the conveyor belt. The weighing sensor is arranged at the bottom of the load-bearing platform. The transmission assembly is used to transport the blank from the load-bearing platform to the conveyor belt. After the blank is stationary on the load-bearing platform, the sensor completes high-precision weighing, and the blank is transferred back to the conveyor belt through the transmission assembly. The independent design of the weighing area effectively avoids the interference of the conveyor belt vibration on the weighing accuracy, improves the reliability of the weighing process, and realizes the efficient connection between weighing and conveying.

[0018] As a further solution of the present invention: a damping layer is provided at the bottom of the weighing sensor, which is used to absorb vibrations that may exist in the environment, further eliminating interference of external vibrations on the weighing process, and ensuring high stability and high precision of weighing data.

[0019] As a further solution of the present invention: a third cover is provided on the bearing platform. The third cover is used to isolate the external airflow and environmental influences during the weighing process, effectively reduce the interference of external airflow fluctuations or dust on the weighing accuracy, optimize the weighing environment, and further improve the reliability and accuracy of the weighing device.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] During the conveying process of the billet on the conveyor belt, the aluminum chips on the surface of the billet are removed in the spraying area, the water stains on the surface of the billet are blown away and dried in the drying area, and then the billet is transported to the weighing area for weighing, eliminating the influence of the weight of the aluminum chips on the weighing accuracy of the billet. Since there is no structure to directly transmit the internal force between the weighing area and the conveyor belt, the vibration generated by the conveyor belt equipment will not be transmitted to the weighing area, ensuring the environmental stability of the weighing area, thereby improving the weighing accuracy of the weighing area. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present drawings or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present drawings. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0023] Figure 1 It is the overall structural schematic diagram of the automatic weighing device;

[0024] Figure 2 It is a top view of the automatic weighing device;

[0025] Figure 3 A schematic diagram of the structure of the spray area provided by the present invention;

[0026] Figure 4 This is a schematic structural diagram of the drying zone provided by the present invention.

[0027] In the figure: 1. spray area; 11. spray assembly; 111. nozzle; 112. water pump; 113. first filter; 114. water tank; 115. return port; 116. second filter; 12. first cover; 2. drying area; 21. blowing assembly; 22. second cover; 221. blowing head; 222. electric heating wire; 223. air source; 3. weighing area; 31. carrying platform; 32. transmission assembly; 33. weighing sensor; 34. damping layer; 35. third cover; 4. conveyor belt. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the present invention more clearly understood, the present invention is described and illustrated below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Based on the embodiments provided by the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0029] Obviously, the drawings described below are only some examples or embodiments of the present invention. For ordinary technicians in this field, the present invention can also be applied to other similar scenarios based on these drawings without creative work. In addition, it can also be understood that although the efforts made in this development process may be complicated and lengthy, for ordinary technicians in this field related to the content disclosed by the present invention, some changes in design, manufacturing or production based on the technical content disclosed by the present invention are just conventional technical means, and should not be understood as insufficient content disclosed by the present invention.

[0030] However, unnecessary detailed descriptions may be omitted. For example, detailed descriptions of well-known matters and repeated descriptions of substantially the same structures may be omitted. This is to avoid the following description from becoming unnecessarily lengthy and to facilitate understanding by those skilled in the art. In addition, the drawings and the following description are provided to enable those skilled in the art to fully understand the present invention and are not intended to limit the subject matter described in the claims.

[0031] See also Figure 1-Figure 2 As shown, in an embodiment of the present invention, an automatic weighing device includes a spraying area 1, a drying area 2, a weighing area 3 and a conveyor belt 4. The spraying area 1 is used to clean the blank. The drying area 2 is used to dry the blank. The weighing area 3 is used to weigh the blank. The spraying area 1, the drying area 2 and the weighing area 3 are arranged in sequence along the conveying direction of the conveyor belt 4, and the weighing area 3 is separated from the conveyor belt 4.

[0032] By setting up the spraying area 1, drying area 2 and weighing area 3 and arranging them in sequence along the conveyor belt 4, an automated production line is formed. The spraying area 1 cleans impurities on the surface of the blank, the drying area 2 removes moisture from the surface of the blank, and the weighing area 3 completes high-precision weighing while isolating vibration interference. The automatic weighing device realizes the integrated processing of the cleaning, drying and weighing of the scroll blank, ensures the stability of the weighing environment, greatly improves the weighing accuracy, reduces the intensity of manual operation, and improves production efficiency.

[0033] The spray area 1 includes a spray assembly 11 and a first cover 12. The first cover 12 is fixed to the side panels on both sides of the conveyor belt 4 and covers the output end of the spray assembly 11 inside. When the blank passes through the conveyor belt 4 and enters the spray area 1, the spray assembly 11 sprays the cleaning liquid evenly on the surface of the blank, and the first cover 12 closes the spray area to prevent the cleaning liquid from overflowing.

[0034] See also Figure 1 and Figure 3 As shown, the spray assembly 11 includes a nozzle 111, a water pump 112, a first filter 113, a water tank 114, a reflux port 115 and a second filter 116 which are interconnected. The water pump 112 drives the cleaning liquid in the water tank 114 to enter the first filter 113 for filtration, and then sprays the cleaning liquid to the blank through the nozzle 111 to clean the impurities such as aluminum chips, dust and lubricants on the surface of the blank. Impurities are collected into the water tank 114 through the reflux port 115 along with the waste liquid, and the aluminum chips are filtered through the second filter 116 before entering the inner cavity of the water tank 114. The aluminum chips are accumulated inside the second filter 116, and the lubricant floats on the surface of the cleaning liquid in the water tank 114 due to its low density. The input pipe of the first filter 113 is arranged at the bottom of the water tank 114 for pumping water, which can prevent impurities and lubricants from entering. Through the circulating water system, the waste of cleaning liquid is reduced and the amount of waste liquid discharged is reduced.

[0035] Furthermore, the conveyor belt 4 is a mesh structure, and during the cleaning process, excess cleaning liquid flows into the recovery system through the mesh holes, reducing liquid retention. This structure avoids the problem of water accumulation at the bottom of the blank and improves the cleaning and drying effects.

[0036] The spray assembly 11 has at least one spray head 111, and the elevation of the spray head 111 in the vertical direction is lower than the elevation of the top surface of the conveyor belt 4. The spray is carried out in all directions along the circumference of the blank, so that the cleaning range covers the top and bottom surfaces of the blank. The upper and lower spray design ensures that there is no dead angle in the blank cleaning, improves the cleanliness of the blank and the weighing accuracy. At the same time, due to the mesh design of the conveyor belt 4, a structural basis is provided for the spray head 111 to clean the blank from the bottom.

[0037] See also Figure 1 and Figure 4 As shown, the drying area 2 includes a blowing component 21 and a second cover body 22. The blowing component 21 sprays hot air onto the surface of the blank to quickly blow away or evaporate the water stains. The closed drying area of ​​the second cover body 22 can prevent the loss of hot air and improve the drying efficiency. In addition, the inner wall of the second cover body 22 can form an arc-shaped guide structure to guide the airflow, so that the airflow direction and heat are more concentrated, and the airflow is directed away from the weighing area 3 to prevent the airflow from affecting the weighing. The specific shape of the arc-shaped guide structure of the second cover body 22 can be adjusted as needed. The surface of the blank after drying is completely clean, providing good conditions for subsequent weighing.

[0038] Specifically, the blowing assembly 21 includes a blowing head 221, an electric thermal resistance wire 222 and an air source 223. The blowing head 221 is connected to the air source 223, and the electric thermal resistance wire 222 is arranged inside the blowing head 221. The air source 223 provides a stable airflow, and the blowing head 221 sprays hot air evenly onto the surface of the blank. The electric thermal resistance wire 222 heats the airflow to a set temperature to quickly evaporate the moisture on the surface of the blank.

[0039] See also Figure 1 As shown, the weighing area 3 includes a carrying platform 31, a transmission assembly 32 and a weighing sensor 33. The blank enters the carrying platform 31 under the continuous conveyance of the conveyor belt 4, and the blank is weighed by the weighing sensor 33. The carrying platform 31 is stationary to ensure the stability of the weighing process. After the weighing is completed, the transmission assembly 32 starts to convey the blank back to the conveyor belt 4 to enter the next process.

[0040] In one embodiment, the transmission assembly 32 is a conveyor belt structure, which is arranged on the top of the carrying platform 31 or is integrally arranged, and the conveyor belt is connected to the conveyor belt 4 at intervals. When the conveyor belt 4 conveys the blank to the transmission assembly 32, the transmission assembly 32 starts to convey the blank to a suitable position and then stops. After stabilization, the weighing sensor 33 weighs it. After the weighing is completed, the transmission assembly 32 starts to convey the blank to the conveyor belt 4 again.

[0041] In one embodiment, the transmission assembly 32 is a mechanical arm structure, and the transmission assembly 32 is arranged around the carrying platform 31. The conveyor belt 4 conveys the blank to the carrying platform 31, and the weighing sensor 33 weighs it in a stable state. After the weighing is completed, the transmission assembly 32 starts to grab the blank and place it on the conveyor belt 4 or push the blank to the conveyor belt 4.

[0042] A damping layer 34 is provided at the bottom of the weighing sensor 33. The weighing area 3 can be arranged directly on the ground, and the damping layer 34 is provided between the weighing sensor 33 and the ground. The damping layer 34 effectively absorbs environmental vibrations on the production line, such as vibrations of the conveyor belt 4 or mechanical operation, and the vibration effect is greatly weakened, so that the weighing sensor 33 works in a stable environment, ensuring the accuracy of the weighing data.

[0043] The third cover 35 is disposed on the carrying platform 31 , and the third cover 35 closes the weighing environment and isolates the influence of external air flow fluctuations and dust. The blank is weighed in a stable environment through the third cover 35 to avoid interference of environmental changes on the sensitivity of the weighing sensor 33.

[0044] It should be noted that the present invention is not limited to the above-mentioned embodiments. The above-mentioned embodiments are only examples, and the embodiments having the same structure as the technical idea and exerting the same effect within the scope of the technical solution of the present invention are all included in the technical scope of the present invention. In addition, without departing from the scope of the main purpose of the present invention, various modifications that can be thought of by those skilled in the art to the embodiments and other methods of combining some of the constituent elements in the embodiments are also included in the scope of the present invention.

Claims

1. An automatic weighing device, characterized in that: include: A spraying area (1), which is used to clean the blank; A drying zone (2), which is used to dry the blank; A weighing area (3), which is used to weigh the blank; A conveyor belt (4), the spraying area (1), the drying area (2) and the weighing area (3) are arranged in sequence along the conveying direction of the conveyor belt (4), and the weighing area (3) is separated from the conveyor belt (4).

2. An automatic weighing device according to claim 1, characterized in that: The spraying area (1) comprises a spraying assembly (11) and a first cover body (12); the output end of the spraying assembly (11) is located between the first cover body (12) and the conveyor belt (4).

3. An automatic weighing device according to claim 2, characterized in that: The spray assembly (11) comprises a spray head (111), a water pump (112), a first filter (113), a water tank (114), a reflux port (115) and a second filter (116) which are interconnected; the reflux port (115) is used to collect waste liquid; the second filter (116) is arranged inside the water tank (114) and is connected to the reflux port (115); the first filter (113) is connected to the cavity between the water tank (114) and the second filter (116).

4. An automatic weighing device according to claim 2, characterized in that: The conveyor belt (4) is a mesh structure.

5. An automatic weighing device according to claim 4, characterized in that: The spray assembly (11) has at least one output end, the elevation of which in the vertical direction is lower than the elevation of the top surface of the conveyor belt (4).

6. An automatic weighing device according to claim 1, characterized in that: The drying area (2) comprises a blowing assembly (21) and a second cover body (22), and the output end of the blowing assembly (21) is located between the second cover body (22) and the conveyor belt (4).

7. An automatic weighing device according to claim 6, characterized in that: The blowing assembly (21) comprises a blowing head (221), an electric thermal resistance wire (222) and an air source (223); the blowing head (221) is connected to the air source (223), and the electric thermal resistance wire (222) is arranged inside the blowing head (221).

8. An automatic weighing device according to claim 1, characterized in that: The weighing area (3) comprises a carrying platform (31), a transmission assembly (32) and a weighing sensor (33); the carrying platform (31) is arranged opposite to the conveyor belt (4); the weighing sensor (33) is arranged at the bottom of the carrying platform (31); and the transmission assembly (32) is used to transport the blank from the carrying platform (31) to the conveyor belt (4).

9. An automatic weighing device according to claim 8, characterized in that: A damping layer (34) is provided at the bottom of the weighing sensor (33).

10. An automatic weighing device according to claim 8, characterized in that: A third cover body (35) is arranged on the carrying platform (31).

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