Hopper of combined weighing device

Abstract

The hopper of the combined weighing device comprises an installation support, a hopper body and an opening and closing door, the hopper body is fixedly connected with the installation support, the hopper body is arranged in a penetrating mode from top to bottom, a feeding port is formed in the upper end of the hopper body, and a discharging port is formed in the lower end of the hopper body. Two opposite edges of the discharge port are arc-shaped edges, and the other two opposite edges of the discharge port are straight edges; the opening and closing door is rotationally connected with the hopper body, the inner side of the opening and closing door is provided with a cambered surface matched with the arc-shaped edge in shape, the cambered surface can abut against the arc-shaped edge, the hopper body rotates so that the hopper body can close the discharging port or open the discharging port, and the rotating center of the opening and closing door coincides with the circle center of the arc-shaped edge. The opening and closing door is matched with the hopper body, so that all materials borne by the opening and closing door can fall into a structure below, and errors are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of combined weighing equipment, in particular to a hopper of a combined weighing device. Background Art

[0002] At present, the existing combination scale directly connects the drive mechanism to the hopper door, and the power of the drive mechanism is directly output to open or close the hopper door. Its structure can meet the requirements in most application scenarios. For example, the utility model patent with application number CN201920097587.0 discloses a combination scale for balloon weighing, including a stand and a combination scale body arranged on the stand. The combination scale body includes a chassis and a support mechanism, and also includes an upper feed hopper, a main vibration plate and a plurality of wire vibration plates arranged from top to bottom. A storage hopper is arranged at the outlet of the wire vibration plate, and a weighing hopper is arranged below the storage hopper. There are 14 weighing hoppers, storage hoppers and wire vibration plates; upper feed adjustment rods are connected to both sides of the upper feed hopper, and the upper feed adjustment rods are connected to the upper feed hopper bracket. A photoelectric sensor is arranged on the upper feed hopper bracket, and the upper feed hopper bracket is installed on the support mechanism. The combination scale is mainly used to weigh and discharge materials (balloons) and cooperate with other mechanisms for online packaging. However, when the storage hopper in the equipment carries other sticky materials (non-balloons), it is easy for the materials to stick together, resulting in the inability of all materials to be delivered to the weighing hopper, affecting the total amount of materials actually packaged, increasing the errors in feeding and discharging, and thus causing the combination weighing device to be unable to adapt to various materials. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a hopper of a combined weighing device, which can reduce errors.

[0004] According to a hopper of a combined weighing device of the first aspect of the present invention, the hopper comprises a mounting bracket, a hopper body and a switch door, wherein the hopper body is fixedly connected to the mounting bracket, the hopper body is arranged through from top to bottom, the upper end of the hopper body is provided with a feed port, the lower end of the hopper body is provided with a discharge port, two opposite edges of the discharge port are arc-shaped edges, and the other two opposite edges are straight edges; the switch door is rotatably connected to the hopper body, and the inner side of the switch door is provided with an arc surface matching the shape of the arc edge, and the arc surface can be aligned with the hopper body. The arcuate edge abuts, wherein the hopper body rotates to make the hopper body close the discharge port, or open the discharge port, and the rotation center of the switch door coincides with the center of the arcuate edge; wherein, when the switch door closes the discharge port, the arcuate surface abuts against both the straight edge and the arcuate edge to seal the discharge port; when the switch door partially opens the discharge port, the arcuate surface abuts against one of the straight edges, and partially abuts against two of the arcuate edges; when the switch door fully opens the discharge port, the arcuate surface is separated from the straight edge and the arcuate edge.

[0005] A hopper of a combined weighing device according to an embodiment of the utility model has at least the following beneficial effects: by utilizing the switch door in conjunction with the hopper body, all materials carried by the switch door can fall into the structure below, thereby avoiding errors.

[0006] According to some embodiments of the utility model, in a vertical cross section, the hopper body and the switch door are both symmetrical figures, the symmetry axis of the hopper body and the symmetry axis of the switch door are collinear, and the rotation center of the switch door is located on the symmetry axis of the switch door.

[0007] According to some embodiments of the present invention, the central angle of the arcuate edge is 45°, and the central angle of the arc surface is 60°.

[0008] According to some embodiments of the present invention, the arcuate edge and the straight edge are both wrapped with a sealing rubber sleeve.

[0009] According to some embodiments of the utility model, a limiting member is provided at one of the two ends of the hopper body having the two straight edges, and the limiting member can abut against the end of the switch door to constrain the position of the switch door.

[0010] According to some embodiments of the utility model, a guide surface is provided on one side of the hopper body away from the limiting member, the guide surface is provided on the straight edge, and in a vertical cross section, the guide surface is inclined from the straight edge toward the inner side of the hopper body.

[0011] According to some embodiments of the utility model, baffles are provided on two opposite sides of the feed port, the baffles are inclined, and the baffles and the arc-shaped edge are located on the same side of the hopper body.

[0012] According to some embodiments of the present invention, the baffle is arranged to be inclined from the edge of the feed port toward the outside.

[0013] According to some embodiments of the utility model, the side wall of the hopper body provided with the baffle is arranged in a vertical direction, and the side wall of the hopper body provided with the straight edge is arranged to be inclined inward from top to bottom.

[0014] According to some embodiments of the utility model, a weighing sensor is provided at the bottom of the arc surface on the inner side of the switch door, the switch door is connected to a drive motor, and the weighing sensor and the drive motor are electrically connected to control the start and stop of the drive motor.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0017] Figure 1 A schematic diagram of a combined weighing device using a hopper according to an embodiment of the utility model;

[0018] Figure 2 A schematic diagram of a use state 1 of a hopper according to an embodiment of the utility model;

[0019] Figure 3 for Figure 2 An enlarged view of the C portion;

[0020] Figure 4 A schematic diagram of a hopper in use state 2 (partially opening the discharge port) of an embodiment of the utility model;

[0021] Figure 5 It is a schematic diagram of the use state 2 (discharging port fully opened) of the hopper according to the embodiment of the utility model.

[0022] 1. Feeding assembly; 11. Guide trough; 2. Hopper; 3. Weighing assembly; 4. Discharging assembly;

[0023] 100. Install the bracket;

[0024] 200, hopper body; 210, feed port; 220, discharge port; 221, arc edge; 222, straight edge; 230, sealing rubber sleeve; 240, limiter; 250, guide surface; 260, baffle;

[0025] 300, open and close the door; 310, curved surface; DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0027] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0029] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0030] Reference Figure 1 , is a combined weighing device using a hopper of an embodiment of the utility model, comprising a feed component 1, a hopper 2, a weighing component 3 and a discharge component 4, wherein a guide groove 11 is provided between the feed component 1 and the hopper 2, the weighing component 3 is located below the hopper 2 for receiving materials from the hopper 2, and the discharge component 4 is provided below the weighing component 3.

[0031] Among them, the hopper of the combined weighing device of the embodiment of the utility model includes a mounting bracket 100, a hopper 2 body and a switch door 300, the hopper 2 body and the mounting bracket 100 are fixedly connected, the hopper 2 body is arranged from top to bottom, the upper end of the hopper 2 body is provided with a feed port 210, the lower end of the hopper 2 body is provided with a discharge port 220, two opposite edges of the discharge port 220 are arc-shaped edges 221, and the other two opposite edges are straight edges 222; the switch door 300 is rotatably connected to the hopper 2 body, and the inner side of the switch door 300 is provided with an arc surface 310 matching the shape of the arc edge 221, and the arc surface 310 can be aligned with the arc edge 221 abuts, wherein the hopper 2 body rotates to close the discharge port 220 or open the discharge port 220, and the rotation center of the switch door 300 coincides with the center of the arc edge 221; wherein, when the switch door 300 closes the discharge port 220, the arc surface 310 abuts against the straight edge 222 and the arc edge 221 to seal the discharge port 220; when the switch door 300 partially opens the discharge port 220, the arc surface 310 abuts against one of the straight edges 222 and parts of the two arc edges 221; when the switch door 300 fully opens the discharge port 220, the arc surface 310 is separated from the straight edge 222 and the arc edge 221.

[0032] In actual use, this embodiment has two use states:

[0033] Use status 1: Figure 2 As shown, the switch door 300 is sealed below the hopper 2 body and abuts against the straight edge 222 and the arc edge 221 of the discharge port 220, so that the space above the discharge port 220 is open and the feed port 210 is open to receive the material from the feed assembly 1. When the material is poured from the feed port 210, the material will be retained at the discharge port 220 and received by the arc surface 310 of the switch door 300;

[0034] Use status 2: Reference Figure 4 and Figure 5 , the switch door 300 rotates toward direction A. During the rotation, the arc edge 221 remains in contact with the arc surface 310 to prevent the material from overflowing from the gap between the arc edge 221 and the arc surface 310. When the arc surface 310 rotates to separate from one of the straight edges 222, the discharge port 220 will be partially opened, and the material will be poured out from the discharge port 220 into the weighing component 3 located below. As the discharge port 220 is gradually opened until it separates from the other straight edge 222, the discharge port 220 will be fully opened to facilitate the falling of the material.

[0035] Among them, in the use state 1, the switch door 300 is in a static structure and collects the materials, while in the use state 2, the switch door 300 maintains a dynamic rotation state. In the process of the switch door 300 rotating relative to the hopper 2 body, the straight edge 222 that remains in contact will scrape the curved surface 310, so that part of the material adhering to the bottom of the switch door 300 is scraped off, until the switch door 300 is completely separated from the straight edge 222 used for scraping, and all the materials adhering to the curved surface 310 of the switch door 300 are scraped into the weighing component 3.

[0036] In summary, by utilizing the switch door 300 in conjunction with the hopper 2 body, all materials carried by the switch door 300 can fall into the structure below, thus avoiding errors.

[0037] It is worth mentioning that, refer to Figures 2 to 5 In the vertical section, the hopper 2 body and the switch door 300 are both symmetrical figures, the symmetry axis of the hopper 2 body and the symmetry axis of the switch door 300 are collinear, and the rotation center of the switch door 300 is located on the symmetry axis of the switch door 300, wherein the central angle of the arc edge 221 is 45°( Figure 2 Angle α), the center angle of the arc surface 310 is 60° ( Figure 2 When the switch door 300 is reset, the switch door 300 can be reset to a position sharing the same symmetry axis with the hopper 2 body by utilizing the effect of gravity. At the same time, the central angle of the arc surface 310 is greater than the central angle of the arc edge 221, and the switch door 300 can be better utilized to cover the entire discharge port 220.

[0038] In some embodiments, reference Figure 2 and Figure 3 The two ends of the hopper 2 body are provided with two straight edges 222, which are divided into an A end and a B end, wherein a limiting member 240 is provided at the A end, and a guide surface 250 is provided at the B end, wherein the limiting member 240 can abut against the end of the switch door 300 to constrain the position of the switch door 300, and the guide surface 250 is provided on the straight edge 222, and in the vertical cross section, the guide surface 250 is inclined from the straight edge 222 to the inner side of the hopper 2 body.

[0039] Reference Figure 2 and Figure 4 In the use state 2, the switch door 300 rotates from the A end to the B end and opens the discharge port 220. The guide surface 250 directly contacts the material, and the inclined guide surface 250 is used to make the material slide onto the curved surface 310 of the switch door 300 to avoid accumulation at the junction of the straight edge 222 at the B end and the curved surface 310. The limiter 240 at the A end can be reset to the use state 1 by abutting against the edge of the switch door 300, so that the switch door 300 is reset to a position that can completely cover the discharge port 220.

[0040] Preferably, in order to improve the sealing performance, both the arcuate edge 221 and the straight edge 222 are wrapped with a sealing rubber sleeve 230 .

[0041] In some embodiments, reference Figures 2 to 5 Baffles 260 are arranged on opposite sides of the feed port 210, the baffles 260 are arranged obliquely, and the baffles 260 and the arc-shaped edge 221 are located on the same side of the hopper 2 body. The baffles 260 are used to correspond to the guide groove 11 to prevent the fallen materials from scattering.

[0042] Preferably, refer to Figure 1 The baffles 260 are tilted outward from the edge of the feed port 210 so that the two baffles 260 are in an outwardly expanded state to facilitate receiving the material.

[0043] It should be mentioned that the side wall of the hopper 2 body is provided with a baffle 260 arranged in the vertical direction, so that the arc edge 221 can ensure that it fits the arc surface 310, and the side wall of the hopper 2 body is provided with a straight edge 222 which is inclined inward from top to bottom, which can guide the material and ensure that the material is discharged from the discharge port 220.

[0044] Furthermore, a weighing sensor (not shown in the figure) is provided at the bottom of the arc surface 310 on the inner side of the switch door 300, and the switch door 300 is connected to a drive motor (not shown in the figure). The weighing sensor and the drive motor are electrically connected to control the start and stop of the drive motor. When the material is poured onto the arc surface 310, the weight is tested by the weighing sensor. When the preset weight is reached, the pouring of the material is stopped, and the switch door 300 is started, so that the material enters the weighing component 3 below from the discharge port 220, and the weighing component 3 is weighed for the second time, and compared with the first weighing data to ensure that all the material falls into the weighing component 3.

[0045] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A hopper of a combined weighing device, characterized in that: It comprises a mounting bracket (100), a hopper (2) body and a switch door (300); The hopper (2) body and the mounting bracket (100) are fixedly connected, the hopper (2) body is arranged to penetrate from top to bottom, the upper end of the hopper (2) body is provided with a feed port (210), the lower end of the hopper (2) body is provided with a discharge port (220), two opposite edges of the discharge port (220) are arc-shaped edges (221), and the other two opposite edges are straight edges (222); The switch door (300) is rotatably connected to the hopper (2) body, and an arc surface (310) matching the shape of the arc edge (221) is provided on the inner side of the switch door (300), and the arc surface (310) can abut against the arc edge (221), wherein the hopper (2) body rotates so that the hopper (2) body closes the discharge port (220) or opens the discharge port (220), and the rotation center of the switch door (300) coincides with the center of the arc edge (221); When the switch door (300) closes the discharge port (220), the arc surface (310) abuts against the straight edge (222) and the arc-shaped edge (221) to seal the discharge port (220); when the switch door (300) partially opens the discharge port (220), the arc surface (310) abuts against one of the straight edges (222) and partially abuts against two of the arc-shaped edges (221); when the switch door (300) fully opens the discharge port (220), the arc surface (310) is separated from the straight edge (222) and the arc-shaped edge (221).

2. The hopper of the combined weighing device according to claim 1, characterized in that: In a vertical cross section, the hopper (2) body and the switch door (300) are both symmetrical figures, the symmetry axis of the hopper (2) body and the symmetry axis of the switch door (300) are collinear, and the rotation center of the switch door (300) is located on the symmetry axis of the switch door (300).

3. A hopper of a combined weighing device according to claim 1 or 2, characterized in that: The central angle of the arc-shaped edge (221) is 45°, and the central angle of the arc surface (310) is 60°.

4. The hopper of the combined weighing device according to claim 1, characterized in that: The arc-shaped edge (221) and the straight edge (222) are both wrapped with a sealing rubber sleeve (230).

5. The hopper of the combined weighing device according to claim 1, characterized in that: A limiting member (240) is provided at one of the two ends of the hopper (2) body having two straight edges (222), and the limiting member (240) can abut against the end of the switch door (300) to constrain the position of the switch door (300).

6. The hopper of the combined weighing device according to claim 5, characterized in that: A guide surface (250) is provided on the side of the hopper (2) body away from the limiting member (240); the guide surface (250) is provided on the straight edge (222); in a vertical cross section, the guide surface (250) is inclined from the straight edge (222) toward the inner side of the hopper (2) body.

7. The hopper of the combined weighing device according to claim 1, characterized in that: Baffles (260) are arranged on two opposite sides of the feed port (210); the baffles (260) are arranged at an angle; and the baffles (260) and the arc-shaped edge (221) are located on the same side of the hopper (2) body.

8. The hopper of the combined weighing device according to claim 7, characterized in that: The baffle (260) is arranged to be inclined from the edge of the feed opening (210) toward the outside.

9. The hopper of the combined weighing device according to claim 7, characterized in that: The side wall of the hopper (2) body provided with the baffle (260) is arranged in a vertical direction, and the side wall of the hopper (2) body provided with the straight edge (222) is arranged to be inclined inward from top to bottom.

10. The hopper of the combined weighing device according to claim 1, characterized in that: A weighing sensor is provided at the bottom of the curved surface (310) on the inner side of the switch door (300), the switch door (300) is connected to a drive motor, and the weighing sensor and the drive motor are electrically connected to control the start and stop of the drive motor.

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