Material collecting device, material collecting method and multi-head weighing and packaging system

Abstract

According to the material collecting device, the material collecting method and the multi-head weighing and packaging system, materials can be prevented from being attached to the inner wall of the material collecting device, the weighed materials can completely enter packaging bags, and it is guaranteed that the weight of the materials in the packaging bags is consistent with the weight weighed by weighing equipment. The material collecting device comprises a material receiving groove, a material scraping mechanism, a conveying groove and a material pushing mechanism. Wherein the material receiving groove is used for receiving materials, and at least one opening for the materials to fall is formed in the material receiving groove. The scraping mechanism is provided with a first moving mechanism and a scraping plate arranged in the receiving groove, and the first moving mechanism drives the scraping plate to move in the receiving groove. The upper end of the conveying groove is communicated with the opening, and the lower end of the conveying groove forms a discharging port. The pushing mechanism is provided with a second moving mechanism and a pushing plate, and the second moving mechanism drives the pushing plate to move in the length direction of the conveying groove.

Description

Technical Field

[0001] The present invention relates to the technical field of weighing and packaging, and in particular to a material collecting device, a material collecting method and a multi-head weighing and packaging system. Background Art

[0002] With the development and progress of society, factory production in various fields has gradually been automated, production lines are becoming faster and faster, and the response speed of each device is also required to be higher and higher. In this context, higher requirements are also placed on the response speed of each device in a production line. At present, weighing equipment is usually used to weigh product materials with roughly equal total weight, and then the weighed materials are collected into packaging bags using material collection devices.

[0003] In order to ensure that the weight of the product material in each packaging bag meets the requirements, it is required that the weighing equipment can accurately weigh the materials, and the material collection device can timely and accurately collect the weighed products and transport them to the packaging bags. However, the material collection device currently used with the weighing equipment is generally a plurality of independent chutes with a certain angle corresponding to the lower portion of the discharge port of the weighing equipment. The product material slides down by its own weight, but when the product material has a certain viscosity, some of the material will stick to the chute and cannot slide down or slide down very slowly, so that the material cannot be collected into the current packaging bag in time during the packaging process, causing the weight of the material in the current packaging bag and the subsequent packaging bags to not meet the requirements. Summary of the invention

[0004] In view of the above problems, the present invention provides a material collecting device, a material collecting method and a multi-head weighing and packaging system, which can solve the problems in the prior art.

[0005] A first aspect of the present invention provides a material collecting device, which includes: a material receiving trough, a material scraping mechanism, a conveying trough and a material pushing mechanism.

[0006] The receiving trough is used to receive materials and has at least one opening for materials to fall. The scraping mechanism comprises a first moving mechanism and a scraper arranged in the receiving trough, and the first moving mechanism drives the scraper to move in the receiving trough. The conveying trough is obliquely arranged below the receiving trough, the upper end of the conveying trough is connected to the opening and the lower end forms a discharge port. The pushing mechanism comprises a second moving mechanism and a push plate, the push plate is arranged on a side of the conveying trough away from the discharge port, and the second moving mechanism drives the push plate to move along the length direction of the conveying trough.

[0007] According to the technical solution of the present invention, the weighed material falls into the receiving trough, and the first moving mechanism of the scraper mechanism drives the scraper to move in the receiving trough to scrape off and collect all the materials in the receiving trough. The collected materials fall into the conveying trough from the opening, and the second moving mechanism drives the push plate to move in the conveying trough along the length direction of the conveying trough, pushing the material in the conveying trough to slide quickly down in the inclined conveying trough to the discharge port.

[0008] The material collecting device can prevent the material from adhering to the inner wall of the receiving trough or the conveying trough, and can keep all the materials gathered and not dispersed during the whole process of collection, so that the materials of the specified weight obtained by weighing can all enter the packaging bag, that is, ensure that the weight of the materials in the packaging bag is consistent with the weighing weight of the weighing device. In addition, by driving the first moving mechanism and the second moving mechanism, the time for the materials to be transported in the receiving trough and the conveying trough can be controlled, so that the transportation of the packaging bag can be coordinated based on the transportation time of the first moving mechanism and the second moving mechanism, so as to avoid the failure of the materials to be released from the discharge port into a packaging bag in time due to the different falling speeds of the materials, thereby improving the packaging efficiency of the materials.

[0009] As a preferred technical solution of the present invention, the material receiving groove is formed as an annular groove formed by one or more segments of circular arc grooves facing each other end to end, and the relative positions between the circular arc grooves form an opening.

[0010] According to the preferred technical solution, the material receiving trough is set as one or more circular arcs, so that the material receiving trough can receive materials released from multiple discharge ports in the annular area, and the materials released from the multiple discharge ports are gathered to the opening through the movement of the scraper. The problem of material dispersion at multiple discharge ports can be solved by scraping and pre-gathering the fallen materials in the material receiving trough.

[0011] As a preferred technical solution of the present invention, the first moving mechanism includes: a rotating shaft and a connecting rod. The rotating shaft is arranged at the axis position of the annular groove; one end of the connecting rod is fixed to the side of the rotating shaft, and the other end extends to the top of the annular groove along the radial direction of the annular groove; the scraper is arranged at the end of the connecting rod away from the rotating shaft in a manner of extending into the annular groove.

[0012] According to the preferred technical solution, the first moving mechanism is configured as a rotating shaft and a connecting rod, so that the rotating shaft can drive the scraper at the other end of the connecting rod to cyclically rotate and scrape the material in the annular groove, thereby continuously and stably completing the process of scraping the material and gathering it to the opening within a rotation cycle or a fraction of a rotation cycle.

[0013] As a preferred technical solution of the present invention, according to the size and characteristics of the material, the scraper can be a flat plate or a rake type with a concave and convex lower end, and the lower edge of the rake is arranged in contact with the material receiving trough.

[0014] According to the preferred technical solution, the lower edge of the rake teeth is arranged in contact with the material receiving trough, which can improve the scraping and conveying effect of the material. In addition, the arrangement of the rake teeth allows the lower edge of the scraper to contact the material receiving trough in an incompletely fitting manner, thereby reducing the greater friction resistance of the scraper when moving and the scraping damage to the inner wall of the bottom of the material trough.

[0015] As a preferred technical solution of the present invention, the material collecting device provided by the present invention further includes: a base and a bottom plate. The base is sleeved outside the conveying trough. The bottom plate is formed by extending outward from the bottom surface of the receiving trough, and the bottom plate is fixedly connected to the base.

[0016] According to the preferred technical solution, the base is sleeved on the outside of the conveying trough, which can limit the position of the conveying trough to a certain extent, especially the position of the discharge port at the lower end of the conveying trough, which is beneficial to aligning the packaging bag with the discharge port during packaging.

[0017] In addition, by fixing the annular groove to the base through the bottom plate, the position of the receiving trough can be fixed to remain unchanged, and the material released from the discharge port can be stably received. Moreover, the annular groove can be suspended from the discharge port, thereby preventing the material from adhering to the pipe wall at the connection during the process of falling from the discharge port.

[0018] As a preferred technical solution of the present invention, the second moving mechanism is formed as a moving track along the length direction of the conveying trough, the side wall of the conveying trough is provided with a moving groove along the length direction of the conveying trough, and one side of the push plate passes through the moving groove and is connected to the moving track.

[0019] According to the preferred technical solution, the movable track along the length direction of the conveying trough can drive the push plate to reciprocate along the length direction of the conveying trough between the opening and the discharge port through the movable trough, so as to push the material in the conveying trough into the discharge port multiple times.

[0020] As a preferred technical solution of the present invention, the receiving trough has multiple openings, and the conveying trough includes multiple inclined chutes arranged corresponding to the openings, and the lower ends of the multiple inclined chutes are jointly enclosed to form a vertical discharge port.

[0021] According to the preferred technical solution, the setting of multiple openings shortens the moving distance required by the first moving mechanism for each scraping, and the materials do not need to be collected in the receiving trough. After pre-collecting some materials in the receiving trough, the push plate can be driven to synchronously push the materials in multiple conveying troughs to the discharge port, and all the materials can be collected at the discharge port. The material load of the scraper and push plate conveyed at one time can be reduced, ensuring the smoothness of the material scraping and conveying process.

[0022] The second aspect of the present invention provides a multi-head weighing and packaging system, comprising the material collecting device in any one of the above technical solutions. In particular, the multi-head weighing and packaging system also includes: a multi-head weighing device having a plurality of weighing chutes arranged in an annular manner, the plurality of weighing chutes being arranged coaxially with the rotating shaft of the scraping mechanism, and the rotating shaft being rotatably connected to the bottom of the multi-head weighing device, and when viewed from above, the lower ends of the plurality of weighing chutes are arranged overlapping with the annular groove to form a plurality of discharge ports.

[0023] According to the technical solution of the present invention, the multi-head weighing and packaging system can weigh the materials separately through the multi-head weighing equipment, and the materials that meet the weight requirements can fall from the multiple discharge ports at the bottom of the multiple weighing chutes (simple openings at the bottom of the weighing chutes or separately provided auxiliary discharge mechanisms) into the annular groove of the material collecting device, thereby further improving the weighing and packaging operation efficiency.

[0024] As a preferred technical solution of the present invention, the multi-head weighing and packaging system provided by the present invention also includes: a support rod, one end of which is fixed to the bottom of the multi-head weighing equipment, and the other end is fixed to the upper surface of the base of the material collecting device, and the middle part of the support rod is fixed to the bottom plate of the material collecting device.

[0025] According to the preferred technical solution, the base, the material receiving trough and the multi-head weighing device are fixedly connected by support rods, which can facilitate the multi-head weighing device and the material receiving trough to be fixed in suspension above and below, avoiding interference with the movement of the first moving mechanism in the material receiving trough, and ensuring that the material can be accurately dropped into the material receiving trough from the discharge port of the multi-head weighing device under the action of gravity or the auxiliary discharge mechanism.

[0026] The third aspect of the present invention further provides a material collection method, which is applicable to the material collection device in any of the above technical solutions, and the material collection method comprises the following steps:

[0027] The material receiving step is to receive the material released from the discharge port into the receiving trough;

[0028] A scraping step, after the material receiving step, scraping the material in the material receiving trough and pushing the material into the conveying trough;

[0029] A conveying step, receiving the material conveyed by the scraping step, and conveying the material to the discharge port in the inclined conveying trough;

[0030] The material pushing step, in the conveying step, pushes the material in the conveying trough to the discharge port.

[0031] As a preferred technical solution of the present invention, a plurality of openings are provided on the material receiving trough, and the plurality of openings are evenly distributed. The first moving mechanism includes a rotating shaft and a plurality of connecting rods evenly arranged along the circumference of the rotating shaft. A scraper is provided at one end of the connecting rod away from the rotating shaft. The number of connecting rods and the number of openings are both equal to n. In the scraping step, the rotating shaft drives the connecting rod to rotate 2π / n degrees each time.

[0032] According to the preferred technical solution, a plurality of openings are provided on the receiving trough, and the first moving mechanism has a plurality of corresponding connecting rods, so that in each scraping step, the rotating shaft does not need to rotate a full circle to scrape and convey the materials in all the receiving troughs. In particular, when the number of openings and connecting rods is n and evenly distributed, the rotating shaft only needs to rotate 2π / n degrees each time to complete the scraping and conveying of the materials in all the receiving troughs, and the operation efficiency is higher.

[0033] As a preferred technical solution of the present invention, the material collecting method is repeatedly executed, and the conveying step in a certain cycle and the material receiving step in the next cycle are performed simultaneously.

[0034] According to the preferred technical scheme, the time that the material stays in the receiving trough and the conveying trough can be controlled through the scraping step and the pushing step, so that before the next material receiving step, all the material in the receiving trough has entered the conveying trough, thereby realizing the conveying step in the previous cycle and the material receiving step in this cycle at the same time, which effectively improves the material packaging operation efficiency while ensuring the consistency of the weight of the material in the packaging bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a top view of the overall structure of the material collecting device in an embodiment of the present invention.

[0036] Figure 2 It is a structural schematic diagram of a more preferred material collecting device in this embodiment.

[0037] Figure 3 It is a schematic diagram of the overall structure of a multi-head weighing and packaging system in the second embodiment of the present invention.

[0038] Figure 4 It is a flow chart of a material collection method in the third embodiment of the present invention.

[0039] Figure 5-Figure 10 It is a schematic diagram of the state of the material collecting device provided in an embodiment of the present invention when executing different steps of the material collecting method.

[0040] Description of reference numerals: 100 - material collecting device; 200 - multi-head weighing device; 201 - receiving end; 202 - material distribution end; 203 - pre-storage bucket; 300 - material;

[0041] 1-receiving trough; 10-annular groove; 11-opening; 12-arc groove; 2-conveying trough; 21-discharging port; 3-scraping mechanism; 31-scraper; 32-first moving mechanism; 321-rotating shaft; 322-connecting rod; 4-pushing mechanism; 41-pushing plate; 42-second moving mechanism; 5-weighing chute; 6-discharging port; 7-base; 8-bottom plate; 9-support rod. DETAILED DESCRIPTION

[0042] First of all, it should be noted that the composition, working principle, characteristics and advantages of the material collection device, material collection method and multi-head weighing and packaging system according to the present application will be explained in an illustrative manner below, but it should be understood that all descriptions are given for illustrative purposes only and should not be construed as forming any limitations on the present application.

[0043] In addition, for any single technical feature described or implied in the embodiments mentioned in this document, or any single technical feature displayed or implied in the accompanying drawings, the present application still allows for continued arbitrary combination or deletion between these technical features (or their equivalents) without any technical obstacles, thereby obtaining more other embodiments of the present application that may not be directly mentioned in this document.

[0044] It should be noted that in the description of the present application, the terms indicating positional relationships such as "upper", "lower", "top", "bottom", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings. This is only to facilitate those skilled in the art to understand the present application more vividly, and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application.

[0045] First embodiment

[0046] In a first embodiment of the present invention, a material collecting device is provided. Figure 1 It is a top view of the overall structure of the material collecting device. Figure 1 As shown, the material collecting device 100 includes a material receiving trough 1 and a conveying trough 2 connected up and down, a scraping mechanism 3 for scraping off the material in the material receiving trough 1 and a pushing mechanism 4 for pushing the material in the conveying trough 2 .

[0047] Specifically, the receiving trough 1 is used to receive materials ( Figure 11 ), and at least one opening 11 for materials to fall is provided. The scraper mechanism 3 has a first moving mechanism 32 and a scraper 31 arranged in the receiving trough 1, and the first moving mechanism 32 drives the scraper 31 to move in the receiving trough 1. Therefore, if the material weighed by the weighing device falls into the receiving trough 1, the first moving mechanism 32 of the scraper mechanism 3 drives the scraper 31 to move in the receiving trough 1 to scrape and collect all the materials in the receiving trough 1, including the materials that may adhere to the inner wall of the receiving trough 1, and the collected materials are transported to the opening 11 by the scraper 31. The inner wall here refers to the side wall and the bottom wall of the receiving trough 1, which are collectively referred to as the inner wall.

[0048] The conveying trough 2 is obliquely arranged below the receiving trough 1, the upper end of the conveying trough 2 is connected to the opening 11 and the lower end is formed as a discharge port 21. The pushing mechanism 4 has a second moving mechanism 42 and a push plate 41, the push plate 41 is arranged on the side of the opening 11 away from the discharge port 21, and the second moving mechanism 42 drives the push plate 41 to move between the opening 11 and the discharge port 21 along the length direction of the conveying trough 2. The upper end of the conveying trough 2 receives the material falling from the opening 11, and the second moving mechanism 42 drives the push plate 41 to push the material in the conveying trough 2 to slide down quickly in the inclined conveying trough 2 to the discharge port 21 to gather and flow out, and a packaging bag can be arranged at the discharge port 21 to receive the outflowing material, thereby realizing accurate and fast packaging of materials of specified weight.

[0049] In this embodiment, the material collecting device 100 can prevent the material from adhering to the inner wall of the receiving trough 1 or the conveying trough 2, and can keep all the materials gathered and not dispersed during the whole process of collection, so that the materials of the specified weight obtained by weighing can all enter the packaging bag, that is, ensure that the weight of the materials in the packaging bag is consistent with the weighing weight of the weighing device. In addition, by driving the first moving mechanism 32 and the second moving mechanism 42, the time for the materials to be transported in the receiving trough 1 and the conveying trough 2 can be controlled, so that the transportation of the packaging bag can be coordinated based on the transportation time of the first moving mechanism 32 and the second moving mechanism 42, so as to avoid the failure of the materials to be released from the discharge port 21 to a packaging bag in time due to the different falling speeds of the materials, thereby improving the packaging efficiency of the materials.

[0050] Figure 2 Schematic diagram of a more preferred material collecting device provided by this embodiment. Figure 2 The structure of the material collecting device 100 provided in this embodiment will be described in more detail.

[0051] [Catch chute]

[0052] The receiving trough 1 is above the conveying trough 2 and is used to receive the material 300 released by the weighing device. Depending on the type of the weighing device, the position and direction of releasing the material 300 are different. The receiving trough 1 can be set accordingly based on the position and direction of the falling material 300. For example, in some embodiments, corresponding to a single-head weighing device, the discharge port ( Figure 1 , Figure 2 In some other preferred embodiments, when the material receiving trough 1 is arranged vertically (not shown in the figure), the material receiving trough 1 can be formed into a groove structure arranged directly below the material discharge port. In other preferred embodiments, when the material discharge port is arranged obliquely, the material receiving trough 1 can be arranged below the material discharge port and slightly extend in the oblique direction of the material discharge port. Figure 1 , Figure 2 (not shown) and having a plurality of material discharge ports, the receiving trough 1 may also be formed as one or more strip grooves or annular grooves connecting the positions corresponding to the plurality of material discharge ports.

[0053] The receiving trough 1 is also provided with an opening 11 for the material 300 to fall. The opening 11 can be opened between multiple sections of the receiving trough 1 or at the end of the receiving trough 1. The diameter of the opening 11 should be greater than the maximum length of the material 300. After the material 300 enters the opening 11, it falls naturally or falls under the auxiliary material discharge mechanism ( Figure 1 , Figure 2 The receiving chute 1 can be arranged horizontally, or the opening 11 can be arranged tiltedly with the opening 11 as the low point to guide the material 300 to slide to the opening 11.

[0054] For example, corresponding to a multi-head weighing device, the receiving trough 1 can be formed as an annular groove 10 formed by one or more segments of circular arc grooves 12 facing each other end to end, and the relative positions between the circular arc grooves 12 respectively form openings 11. A segment of circular arc groove means that the receiving trough 1 can also be formed as a continuous annular groove 10 with a gap, and the gap is formed as the opening 11. Therefore, the receiving trough 1 can receive the materials 300 released from multiple discharge ports in the annular area, and collect the materials 300 released from the multiple discharge ports to the opening 11 through the movement of the scraper 31, so that the problem of dispersion of the materials 300 from the multiple discharge ports during the falling process can be solved by scraping and pre-collecting the fallen materials 300 in the receiving trough 1.

[0055] [Scraper mechanism]

[0056] The scraper mechanism 3 is used to scrape off the material 300 adhered to the inner wall of the receiving trough 1, and collect and transport the material 300. The scraper mechanism 3 includes a scraper 31 arranged in the receiving trough 1, and a first moving mechanism 32 driving the scraper 31 to move in the receiving trough 1. The first moving mechanism 32 at least drives the scraper 31 to move between the position where the material 300 falls and the opening 11. The scraper 31 can be arranged in close contact with the inner wall of the receiving trough 1 or with a gap. In the case where some materials are small and easy to adhere to the inner wall of the receiving trough 1, the scraper 31 and the receiving trough 1 can be arranged in close contact, in which case the scraper 31 can better scrape off the materials 300 adhering to the inner wall of the receiving trough 1; in the case where some materials are large and easy to scrape off, the scraper 31 and the receiving trough 1 can be arranged with a gap. In this case, the gap between the scraper 31 and the receiving trough 1 can be controlled to be smaller than the minimum outer diameter of the material 300, which can ensure the scraping effect of the material 300 while avoiding the friction resistance between the scraper 31 and the inner wall of the receiving trough 1, and reduce the scraping damage to the inner wall of the receiving trough 1. By moving the scraper 31, the materials 300 adhering to the inner wall of the receiving trough 1 can be scraped off synchronously on the conveying path of the materials 300, avoiding the dispersion of the materials 300, and the materials 300 collected for the first time in the receiving trough 1 naturally fall after entering the opening 11.

[0057] In some preferred embodiments, corresponding to the annular groove 10 in the above embodiments, the first moving mechanism 32 may have a rotating shaft 321 arranged at the axial position of the annular groove 10; and a connecting rod 322 with one end fixed to the side of the rotating shaft 321, and the other end of the connecting rod 322 extends along the radial direction of the annular groove 10 to above the annular groove 10, and the scraper 31 is arranged at the end of the connecting rod 322 away from the rotating shaft 321 so as to extend into the annular groove 10.

[0058] The first moving mechanism 32 is configured to be a rotating shaft 321 and a connecting rod 322. The rotating shaft 321 can be used as the output shaft of the motor. Under the rotation drive of the rotating shaft 321, the connecting rod 322 drives the scraper 31 at the other end of the connecting rod 322 to rotate and scrape cyclically in the annular groove 10, so that the scraping of the material 300 and the collection of the material 300 to the opening 11 can be completed continuously and stably within a rotation cycle or a fraction of a rotation cycle. In particular, for the case where a plurality of openings 11 are provided on the receiving trough 1 and the plurality of openings 11 are evenly distributed, the first moving mechanism 32 includes a rotating shaft 321 and a plurality of connecting rods 322 evenly arranged along the circumference of the rotating shaft 321. The number of the connecting rods 322 and the number of the openings 11 are both equal to n. The rotating shaft 321 drives the connecting rod 322 to rotate 2π / n degrees each time to complete the scraping and conveying of all the materials 300 in the receiving trough 1.

[0059] In other preferred embodiments, the lower end of the scraper 31 can be formed into concave and convex rake teeth, and the lower edge of the rake teeth is arranged in contact with the material receiving trough 1. The lower edge of the rake teeth is arranged in contact with the material receiving trough 1, which can improve the scraping and conveying effect of the material 300, and the arrangement of the rake teeth allows the lower edge of the scraper 31 to be in contact with the material receiving trough 1 without being completely close, thereby reducing the large friction resistance of the scraper 31 when moving and the scraping damage to the bottom inner wall of the material receiving trough 1.

[0060] [Conveyor trough]

[0061] The conveying trough 2 is obliquely arranged below the receiving trough 1. Specifically, the upper end of the conveying trough 2 is arranged corresponding to the opening 11, and is used to receive the material 300 falling from the opening 11. The lower end of the conveying trough 2 is formed as a discharge port 21, and the material 300 of a specified weight can flow into the packaging bag through the discharge port 21 to complete the packaging. Figure 1 and Figure 2 As shown in the example, the conveying trough 2 can be formed as a straight strip trough, but those skilled in the art can understand that the conveying trough 2 can be set in other shapes, such as a fan-shaped trough that is narrow at the top and wide at the bottom, or a curved arc trough, which can also guide the material 300 into the discharge port, and all belong to the protection scope of the present invention.

[0062] When the receiving trough 1 has multiple openings 11, the conveying trough 2 preferably includes multiple inclined chutes arranged corresponding to the openings 11, and the lower ends of the multiple inclined chutes are enclosed together to form a vertical discharge port 21. The setting of multiple openings 11 shortens the moving distance required for each scraping of the first moving mechanism 32, and the material 300 does not need to be collected in the receiving trough 1. After pre-collecting some of the materials 300 in the receiving trough 1, the push plate 41 can be driven to synchronously push the materials 300 in the multiple conveying troughs 2 to the discharge port 21, and complete the collection of all the materials 300 at the discharge port 21. It can reduce the load of the material 300 conveyed by the scraper 31 and the push plate 41 at one time, and ensure the smoothness of the scraping and conveying process of the material 300.

[0063] [Pushing mechanism]

[0064] The pushing mechanism 4 is used to push the material 300 that falls into the conveying trough 2 into the discharge port 21 for release, which can prevent the uneven speed of the material 300 sliding on the inclined conveying trough 2 and causing the material 300 to be released from the discharge port 21 at different times. At the same time, the pushing plate 41 also has the function of preventing the material 300 from adhering to the surface of the conveying trough 2, further preventing the material 300 from adhering to the inner wall or the bottom during the collection process.

[0065] The pushing mechanism 4 has a second moving mechanism 42 and a pushing plate 41. The pushing plate 41 is arranged on a side of the conveying trough 2 away from the discharge port 21. The second moving mechanism 42 drives the pushing plate 41 to move between the opening 11 and the discharge port 21 along the length direction of the conveying trough 2. Preferably, the second moving mechanism 42 can be a moving track along the length direction of the conveying trough 2. The side wall of the conveying trough 2 is provided with a moving groove along the length direction of the conveying trough 2 (not shown in the figure). One side of the pushing plate 41 passes through the moving groove and is connected to the moving track. The pushing plate 41 is driven to reciprocate between the opening 11 and the discharge port 21 along the length direction of the conveying trough 2 through the moving groove, so as to push the material 300 in the conveying trough 2 into the discharge port 21 multiple times.

[0066] In this embodiment, the annular groove 10 can simultaneously receive materials 300 released from multiple discharge ports of a multi-head weighing device, and the rotating shaft 321 of the scraper mechanism 3 rotates to drive the scraper 31 to move in the receiving trough 1, scrape off the materials 300 adhering to the receiving trough 1, and collect and convey the materials 300 released from multiple discharge ports for the first time. The materials 300 conveyed to the opening 11 fall into the conveying trough 2, and the push plate 41 corresponding to the opening 11 can respond to the falling of the materials 300 and move along the length direction of the conveying trough 2, pushing the materials 300 to slide quickly down to the discharge port 21, thereby completing the accurate and rapid packaging of the materials 300 of the specified weight.

[0067] Second embodiment

[0068] Figure 3 1 is a schematic diagram of the overall structure of a multi-head weighing and packaging system provided in the second embodiment of the present invention and having any one of the material collecting devices 100 in the first embodiment. Figure 2 and Figure 3 From the perspective of FIG. 1 , the multi-head weighing and packaging system further includes a multi-head weighing device 200 disposed above the material collecting device 100 .

[0069] The specific type of the multi-head weighing device 200 is not limited. A commercially available multi-head weighing device 200 can be selected, which has multiple weighing chutes 5. The material 300 falls into the weighing chute 5 from the top. After weighing is completed in the weighing chute 5, it is released from the discharge port 6 at the lower end of the weighing chute 5.

[0070] For example, material 300 enters the multi-head weighing device 200 from the receiving end 201, and then the receiving end 201 disperses the material 300 to the distributing end 202. The material 300 enters the pre-storage bucket 203 below from the distributing end 202, and then slides down into the weighing chute 5 below under the action of gravity. After the material 300 is weighed in the weighing chute 5, the multi-head weighing device 200 controls the opening of the discharge ports 6 at the lower ends of several weighing chutes 5 according to the specified target weight, so that the weight of the dropped material 300 is basically equal to the target weight.

[0071] It should be noted that the "discharging port" referred to here can be the lower end outlet of the weighing chute 5, and the material falls directly from the discharging port 6 by gravity after being weighed; or, the discharging port 6 can also be an auxiliary discharging mechanism connected to the lower end of the weighing chute 5, such as a rotating discharging device or an inclined discharging hopper, which accelerates and guides the material 300 to fall from the discharging port 6 by combining the driving force of the auxiliary discharging mechanism with gravity.

[0072] In particular, the multiple weighing chutes 5 of the multi-head weighing device 200 are coaxially arranged with the rotating shaft 321 of the scraping mechanism 3, and the rotating shaft 321 is rotatably connected to the bottom of the multi-head weighing device 200, so that the rotating shaft 321 can be suspended at the axis position of the annular groove 10. The projection of the lower end of the multiple weighing chutes 5 overlaps with the annular groove 10, so that the material 300 released by the discharge port 6 at the lower end of the multiple weighing chutes 5 can accurately fall into the receiving trough 1.

[0073] Since the rotating shaft 321 is suspended at the axial center of the material receiving trough 1 and does not need to bear weight, the multi-head weighing device 200 and the material collecting device 100 need to be reliably fixed by other structures.

[0074] For example, in some optional embodiments, the material collecting device 100 further comprises a base 7 sleeved on the outside of the conveying trough 2, and a bottom plate 8 formed by extending outward from the bottom surface of the receiving trough 1. When the base 7 is sleeved on the outside of the conveying trough 2, the position of the conveying trough 2, especially the position of the discharge port 21 at the lower end of the conveying trough 2, can be limited to a certain extent, which is conducive to aligning the packaging bag with the discharge port 21 during packaging.

[0075] The multi-head weighing and packaging system may have a plurality of symmetrically arranged support rods 9, one end of the support rod 9 being fixed to the bottom of the multi-head weighing device 200, and the other end being fixed to the upper surface of the base 7 of the material collecting device 100, and the middle portion of the support rod 9 being fixed to the bottom plate 8 of the material collecting device 100. The base 7, the receiving trough 1 and the multi-head weighing device 200 are fixedly connected by the support rods 9, so that the multi-head weighing device 200 and the receiving trough 1 can be fixed in an up-and-down suspended manner, avoiding obstruction of the movement of the first moving mechanism 32 in the receiving trough 1, and the position of the fixed receiving trough 1 always remains unchanged, so as to stably receive the material 300 released by the discharge port 6, and the annular groove 10 can be suspended from the discharge port 6, so as to avoid the material 300 from adhering to the connection during the process of falling from the discharge port 6.

[0076] In this embodiment, the connection method between the material collecting device 100 and the multi-head weighing device 200 is further designed, so that the material collecting device 100 can cooperate with the multi-head weighing device 200 to form a multi-head weighing packaging system. The structure of the multi-head weighing packaging system is reliable, and since the moving parts do not bear weight, the long-term stability of the fixed connection between the various parts can be guaranteed. After the material 300 is released from the discharge port 6 of the multi-head weighing device 200, it can accurately fall into the receiving trough 1 of the material collecting device 100, which is beneficial to the subsequent collection of the material 300.

[0077] Third embodiment

[0078] Figure 4 1 is a flow chart of a material collection method provided by the third embodiment of the present invention. The material collection method comprises the following steps:

[0079] The material receiving step S1 is to receive the material released from the material discharge port into the material receiving trough;

[0080] The scraping step S2, after the material receiving step, scrapes the material in the material receiving trough and pushes the material into the conveying trough;

[0081] Conveying step S3, receiving the material conveyed by the scraping step S1, and conveying the material to the discharge port in the inclined conveying trough;

[0082] The material pushing step S4, in the conveying step, pushes the material in the conveying trough to the discharge port.

[0083] Among them, as described in the first embodiment, for the case where a plurality of openings 11 are provided on the receiving trough 1 and the plurality of openings 11 are evenly distributed, the first moving mechanism 32 includes a material collecting device 100 having a rotating shaft 321 and a plurality of connecting rods 322 evenly arranged along the circumference of the rotating shaft 321. In each scraping step, the rotating shaft 321 does not need to rotate a full circle to scrape and convey all the materials 300 in the receiving trough 1. In particular, when the number of openings 11 and connecting rods 322 is n and evenly distributed, the rotating shaft 321 only needs to rotate 2π / n degrees each time to complete the scraping and conveying of the materials 300 in all the receiving troughs 1, and the operation efficiency is higher.

[0084] Further preferably, the material collection method is repeatedly executed, and the conveying step S3 in a certain cycle and the material receiving step S1 in the next cycle can be performed simultaneously. Through the scraping step S2 and the pushing step S4, the time for the material 300 to stay in the receiving trough 1 and the conveying trough 2 can be controlled, and it can be ensured that before the next material receiving step S1, all the materials 300 in the receiving trough 1 have entered the conveying trough 2, so that the conveying step in the previous cycle and the material receiving step in this cycle are performed simultaneously, while ensuring that the weight of the material 300 in the packaging bag is consistent, the operating efficiency of the material 300 packaging is effectively improved.

[0085] Below, with Figure 5-Figure 10 Taking the material collecting device 100 shown in the figure as an example, the material collecting process of the material collecting device 100 provided in this embodiment when executing the material collecting method in a specific application scenario is described in detail.

[0086] First, if Figure 5 As shown, the material receiving step S1 is performed, and a plurality of material lumps 300 of a specified weight released by the multi-head weighing device 200 are received by the annular groove 10 .

[0087] Afterwards, the scraping step S2 is performed, such as Figure 6-Figure 7 As shown, the rotating shaft 321 drives the connecting rod 322 to rotate, and the scraper 31 rotates in the annular groove 10. During the rotation of the scraper 31, the material 300 in the receiving trough 1 and the material 300 adhered to the inner wall of the receiving trough 1 are continuously scraped and collected by the scraper 31, and the material 300 moves along the annular groove 10 toward the opening 11. When the rotating shaft 321 rotates 1 / 4π degree, the scraper 31 moves to the opening 11, and the material 300 falls at the opening 11.

[0088] Execute the conveying step S3, such as Figure 8As shown, the upper end of the conveying trough 2 receives the material 300 conveyed by the scraping step S2, and the material 300 is conveyed to the discharge port 21 in the inclined conveying trough 2. At the same time, the material receiving step S1 of the next cycle is executed, and the multi-head weighing device 200 releases multiple groups of materials 300 of a specified weight again, and the annular trough 10 receives multiple groups of materials 300 of the next cycle.

[0089] Execute the pushing step S4, such as Figure 9-10 As shown, the second moving mechanism 42 drives the push plate 41 disposed on the side of the conveying trough 2 away from the discharge port 21 to move downward along the conveying trough 2, pushing the material 300 to quickly gather to the discharge port 21 and release, and then the push plate 41 moves upward to the side of the opening 11 away from the conveying trough 2 to reset. At the same time, the scraping step S2 of the next cycle is executed, the rotating shaft 321 drives the connecting rod 322 to rotate, and the scraper 31 rotates 1 / 4π degrees in the receiving trough 1 to scrape the material 300 and convey it to the opening 11. In this way, the sticky material 300 can be quickly and accurately collected and packaged.

[0090] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A material collecting device, It is characterized in that include: A material receiving chute is used to receive materials and has at least one opening for the materials to fall; A scraping mechanism, comprising a first moving mechanism and a scraper disposed in the material receiving trough, wherein the first moving mechanism drives the scraper to move in the material receiving trough; A conveying trough is obliquely arranged below the receiving trough, the upper end of the conveying trough is connected to the opening and the lower end is formed as a discharge port; The pushing mechanism comprises a second moving mechanism and a pushing plate, wherein the pushing plate is arranged on a side of the conveying trough away from the discharge port, and the second moving mechanism drives the pushing plate to move along the length direction of the conveying trough.

2. The material collecting device according to claim 1, It is characterized in that The material receiving groove is formed as an annular groove formed by one or more segments of circular arc grooves facing each other end to end, and the relative positions between the circular arc grooves form an opening.

3. The material collecting device according to claim 2, It is characterized in that The first moving mechanism comprises: A rotating shaft, arranged at the axis center of the annular groove; A connecting rod has one end fixed to the side of the rotating shaft and the other end extending radially along the annular groove to above the annular groove. A scraper is arranged at one end of the connecting rod away from the rotating shaft so as to extend into the annular groove.

4. The material collecting device according to any one of claims 1 to 3, It is characterized in that The lower end of the scraper is formed into concave and convex rake teeth, and the lower edge of the rake teeth is arranged in contact with the material receiving trough.

5. The material collecting device according to claim 2, It is characterized in that Also includes: A base, sleeved on the outside of the conveying trough; The bottom plate is formed by extending outward from the bottom surface of the material receiving trough, and the bottom plate is fixedly connected to the base.

6. The material collecting device according to claim 1, It is characterized in that The second moving mechanism is formed as a moving track along the length direction of the conveying trough, and a moving groove along the length direction of the conveying trough is opened on the side wall of the conveying trough, and one side of the push plate passes through the moving groove and is connected to the moving track.

7. The material collecting device according to claim 2, It is characterized in that The receiving trough has a plurality of openings, and the conveying trough includes a plurality of inclined chutes arranged corresponding to the openings, and the lower ends of the plurality of inclined chutes are jointly enclosed to form a vertical discharge port.

8. A multi-head weighing and packaging system, It is characterized in that The material collecting device according to any one of claims 2 to 7 further comprises: A multi-head weighing device has a plurality of weighing chutes arranged in an annular shape, wherein the plurality of weighing chutes are arranged coaxially with the rotating shaft of the scraping mechanism, and the rotating shaft is rotatably connected to the bottom of the multi-head weighing device, When viewed from above, the lower ends of the multiple weighing chutes are overlapped with the annular groove to form multiple discharge ports.

9. The multi-head weighing and packaging system according to claim 8, It is characterized in that Also includes: A support rod has one end fixed to the bottom of the multi-head weighing device and the other end fixed to the upper surface of the base of the material collecting device, and the middle part of the support rod is fixed to the bottom plate of the material collecting device.

10. A material collection method, applicable to the material collection device according to any one of claims 1 to 7, It is characterized in that The following steps are involved: The material receiving step is to receive the material released from the discharge port into the receiving trough; a material scraping step, after the material receiving step, scraping the material in the material receiving trough and pushing the material into the conveying trough; A conveying step, receiving the material conveyed by the scraping step, and conveying the material to a discharge port in the inclined conveying trough; A material pushing step, in the conveying step, pushes the material in the conveying trough to the discharge port.

11. The material collection method according to claim 10, It is characterized in that The receiving trough is provided with a plurality of openings, and the plurality of openings are evenly distributed. The first moving mechanism comprises a rotating shaft and a plurality of connecting rods evenly arranged along the circumference of the rotating shaft. A scraper is arranged at one end of the connecting rod away from the rotating shaft. The number of the connecting rods and the number of the openings are both equal to n. In the scraping step, the rotating shaft drives the connecting rod to rotate 2π / n degrees each time.

12. The material collection method according to claim 10, It is characterized in that The material collecting method is repeatedly executed, wherein the conveying step in one cycle and the material receiving step in the next cycle are performed simultaneously.

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