Conveying device

Abstract

To inhibit the deterioration of transportability of articles having fat on their surface.SOLUTION: According to one embodiment, a conveying device 1 comprises a conveying section 3 that conveys articles with fat on their surfaces that are thrown from outside. A hydrophilic coating layer 2 is formed on the conveying surface 31 of the conveying section 3.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a transport device. [Background technology]

[0002] Conventionally, a combination weighing device having a trough or a chute that utilizes shutter processing as a non-adhesive technology has been known. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] WO2014 / 067533A1 [Patent Document 2] JP 2020-23386 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, when transporting fatty items such as chicken thighs or sliced ​​beef, such combination weighing devices had the problem that as production time passed, fat would adhere to the transport surfaces of the transport sections that transport the items, such as troughs and chutes, reducing transportability.

[0005] Therefore, the present invention has been made in consideration of the above problems, and aims to provide a conveying device that can suppress a decrease in conveying performance even when conveying items having fat on their surfaces. [Means for solving the problem]

[0006] The conveying device of one embodiment includes a conveying section that is inserted from the outside and conveys items having at least a fat content on their surface, and a hydrophilic coating layer is formed on the conveying surface of the conveying section. Effect of the Invention

[0007] According to the present invention, a conveying device can be provided that can suppress a decrease in conveying performance even when conveying objects having fat on their surfaces. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a diagram illustrating an example of the overall configuration of a conveying device 1 according to the first embodiment. [Diagram 2] FIG. 2 is a diagram for explaining an example of the coating layer 2 formed on the conveying surface 31 of the conveying section 3 of the conveying device 1 according to the first embodiment. [Diagram 3] FIG. 3 is a diagram showing a part of the conveying surface 91 of the trough 11 of the conveying device 1 according to the first embodiment. [Figure 4] FIG. 4 is a diagram showing a part of the conveying surface 23 of the chute 9 of the conveying device 1 according to the first embodiment. [Diagram 5] FIG. 5 shows a portion of the conveying surface 23 / 91 of the chute 9 / trough 11 of the conveying device 1 according to the first embodiment. [Figure 6] FIG. 6 is a cross-sectional view taken along line XX in FIG. [Figure 7] FIG. 7 is an example of a side view of the trough 11 of the transport device 1 according to the first embodiment. [Figure 8] FIG. 8 is an example of a side view of the chute 9 of the conveying device 1 according to the first embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings. In the following description of the drawings, the same or similar parts are given the same or similar reference numerals. However, it should be noted that the drawings are schematic and the ratios of the dimensions are different from the actual ones. Therefore, the specific dimensions should be determined with reference to the following description. In addition, the drawings may include parts with different dimensional relationships and ratios. In this specification and the drawings, elements having substantially the same functions and configurations are given the same reference numerals to avoid repeated explanations, and elements not directly related to the present invention are not illustrated.

[0010] (First embodiment) A conveying device 1 according to a first embodiment of the present invention will be described below with reference to Figs. 1 to 8. In this embodiment, a combination weighing device will be described as an example of the conveying device 1, but the present invention is not limited to this. The combination weighing device is a device that calculates the weight of articles supplied from a transport conveyor arranged upstream so that the weight reaches a target weight value and supplies the articles to a downstream device.

[0011] 1, the conveying device 1 according to this embodiment includes a dispersion table 10, a plurality of troughs (conveying feeders) 11, a pool hopper 12, a weighing hopper 13, and a chute 9. The conveying device 1 may be a timing hopper that temporarily receives the articles discharged from the chute 9 and then discharges the articles downstream.

[0012] The dispersion table 10 receives the articles input from the outside and discharges the articles in the circumferential direction. Specifically, the dispersion table 10 may have a vibrator and transport the articles in the circumferential direction based on the vibration component applied by the vibrator. In the above example, the dispersion table 10 transports the articles by vibration. However, for example, the dispersion table 10 may be configured to be composed of a substantially conical member and rotate around the apex as the center of rotation.

[0013] Each of the multiple troughs 11 receives the articles discharged from the dispersion table 10 and transports them further downstream. Specifically, the trough 11 may have a vibrator and transport the articles 100 further downstream based on the vibration components applied by the vibrator.

[0014] The pool hopper 12 temporarily retains the articles discharged from the trough 11 by opening and closing a gate, and then discharges the articles into a weighing hopper 13 disposed downstream.

[0015] The weighing hopper 13 temporarily retains the articles discharged from the pool hopper 12 by opening and closing a gate, and acquires the weight value of the retained articles. After that, when selected as a result of a combination calculation by a control unit (not shown), the weighing hopper 13 discharges the retained articles to the downstream chute 9.

[0016] The chute 9 collects the articles discharged from the weighing hoppers 13 at one location and discharges them downward. In the present embodiment, a configuration in which articles are discharged from the weighing hoppers 13 has been described. However, the present invention is not limited to this configuration, and if a booster hopper is provided, the chute 9 may receive articles discharged from the booster hopper.

[0017] 2, a hydrophilic coating layer 2 is formed on a conveying surface 31 of the conveying section 3 of the conveying device 1. In this embodiment, the conveying section 3 includes a dispersion table 10, a plurality of troughs 11, a pool hopper 12, a weighing hopper 13, a booster hopper, and a chute 9. That is, a hydrophilic coating layer 2 is formed on the conveying surfaces of the plurality of troughs 11 and the conveying surface of the chute 9.

[0018] Furthermore, a hydrophilic coating layer 2 is formed on the surfaces of the pool hopper 12 and the weighing hopper 13 that come into contact with the articles. Here, the surfaces that come into contact with the articles include the surfaces that come into contact with the articles of a cylindrical member that is open at the top and bottom and that constitutes the hopper, and of a gate that closes the opening located on the lower side of this cylindrical member.

[0019] The types of such hydrophilic coating layers 2 are roughly divided into inorganic and organic types. Inorganic coating layers are formed by photocatalysts such as titanium oxide. Specifically, inorganic coating layers are formed by forming highly hydrophilic hydroxyl groups on the titanium oxide surface using sunlight (mainly ultraviolet rays). Organic coating layers are formed by resins containing ions or hydrophobic groups.

[0020] For example, as shown in Fig. 2, the contact angle A1 between the water droplets W formed on the transport surface 31 on which the hydrophilic coating layer 2 is formed and the transport surface 31 is 40 degrees or less. Experimental results have shown that this configuration increases the affinity between the transport surface 31 and water molecules, resulting in hydrophilicity. Similarly, it has been shown that when the contact angle A1 is 40 degrees to 90 degrees, hydrophobicity is exhibited, and when the contact angle A1 is 90 degrees or more, water repellency is exhibited.

[0021] In addition, the above-mentioned conveying surface 31 may be provided with a plurality of protrusions. For example, as shown in Fig. 3, the conveying surface 91 of the trough 11 may be provided with a plurality of protrusions 92. In addition, as shown in Fig. 4, the conveying surface 23 of the chute 9 may be provided with a plurality of protrusions 22.

[0022] Here, the plurality of protrusions 22 / 92 may be formed by embossing.

[0023] The protrusions 22 / 92 may be formed by shuttering. The shuttering may be louvered. The conveying surface 23 / 91 with the shuttering is structured such that when the conveying surface 23 / 91 is viewed from the front, the other side of the chute 9 / trough 11 is not visible, but the other side of the chute 9 / trough 11 can be seen by shifting the viewpoint.

[0024] 5 and 6, openings 21A / 91A are formed at downstream ends 22E / 92E of the multiple protrusions 22 / 92, extending from the conveying surface 23 / 91 toward the back surface 24 / 93. Here, the back surface 24 is the back surface of the chute 9, and the back surface 93 is the back surface of the trough 11. The openings 21A are formed from the conveying surface 23 of the chute 9 toward the back surface 24, and the openings 91A are formed from the conveying surface 91 of the trough 11 toward the back surface 93.

[0025] In other words, as shown in Figures 5 and 6, the trough 11 has a first sliding surface 91 having a plurality of openings 91A, and a second sliding surface 92 that covers a portion of the openings 91A and is positioned at a position closer to the inside I of the trough 11 than the first sliding surface 91.

[0026] The second sliding surface 92 is formed continuously with the first sliding surface 91 on the upstream side U, left side L and right side R of the above-mentioned opening 91A.

[0027] Specifically, as shown in FIG. 5, the second sliding surface 92 has a left planar surface 92L, a right planar surface 92R, and an upper planar surface 92U.

[0028] Here, as shown in FIG. 5, the left side plane 92L is formed so as to rise from the first sliding surface 91 toward the inside I on the left side L of the opening 91A.

[0029] As shown in FIG. 5, the right plane 92R is formed so as to rise from the first sliding surface 91 toward the inner side I on the right side R of the opening 91A.

[0030] Furthermore, as shown in FIG. 5, the upper flat surface 92U is formed so as to connect the left flat surface 92L and the right flat surface 92R.

[0031] Similarly, as shown in Figures 5 and 6, the chute 9 has a first sliding surface 23 having a plurality of openings 21A, and a second sliding surface 22 that covers a portion of the openings 21A and is positioned on the inside I of the chute 9 relative to the first sliding surface 23.

[0032] The second sliding surface 22 is formed continuously with the first sliding surface 23 on the upstream side U, left side L and right side R of the above-mentioned opening 21A.

[0033] Specifically, as shown in FIG. 5, the second sliding surface 22 has a left plane 22L, a right plane 22R, and an upper plane 22U.

[0034] Here, as shown in FIG. 5, the left side plane 22L is formed so as to rise from the first sliding surface 23 toward the inside I on the left side L of the opening 21A.

[0035] As shown in FIG. 5, the right plane 22R is formed so as to rise from the first sliding surface 23 toward the inside I on the right side R of the opening 21A.

[0036] Furthermore, as shown in FIG. 5, the upper flat surface 22U is formed so as to connect the left flat surface 22L and the right flat surface 22R.

[0037] According to the above-mentioned configuration, the plurality of protrusions 22 / 92 can further suppress the deterioration of the transportability of articles having fat on their surfaces.

[0038] Furthermore, as shown in Fig. 7, when the trough 11 is viewed from the side, the angle A2 that the trough 11 makes with the horizontal direction H is preferably in the range of 9 to 12 degrees. Furthermore, as shown in Fig. 8, when the chute 9 is viewed from the side, the angle that the chute 9 makes with the horizontal direction H is preferably in the range of 40 to 60 degrees. With this configuration, the overall height of the combination weighing device can be reduced while maintaining the conveying performance, compared to a case where a hydrophilic coating layer is not formed. This makes it easier to accommodate the different heights of factories for each customer.

[0039] According to the conveying device 1 of this embodiment, it is possible to suppress the decrease in conveyability of an article having a fat content on its surface. Compared with conventional coating layers having water-repellent properties, when a hydrophilic coating layer is used, a thin water film can be formed on the conveying surface. The action of the water film thus formed reduces direct contact between at least the fat content on the surface of the article and the conveying surface, and reduces adhesion between the respective articles. Furthermore, since a water film is formed between the article and the conveying surface, and direct contact of the article with the conveying surface is reduced, it is possible to maintain the effect of the hydrophilic coating layer for a long period of time compared to other coating layers, such as water repellency.

[0040] Although the present invention has been described in detail using the above-mentioned embodiment, it is clear to those skilled in the art that the present invention is not limited to the embodiment described in the present specification. The present invention can be implemented in modified and altered forms without departing from the spirit and scope of the present invention defined by the description of the claims. Therefore, the description in this specification is intended to be illustrative and does not have any limiting meaning on the present invention. [Explanation of symbols]

[0041] 1...Transportation device 2…Coating layer 3...Transportation section 23, 31, 91...Transport surface (first sliding surface) 9. Shoot 10…Dispersion table 11…Trough 21A, 91A…Aperture 22L, 92L…Left side plane 22R, 92R…Right side plane 22U, 92U…Upper plane 22, 92…Protruding part (second running surface) 22E, 92E...downstream end of protrusion W…Water droplet

Claims

1. A conveying unit is provided for conveying an article that is input from the outside and has at least a fat content on a surface thereof, A conveying device, wherein a hydrophilic coating layer is formed on a conveying surface of the conveying section.

2. The transport apparatus of claim 1 , wherein the transport surface is provided with a plurality of protrusions.

3. The conveying device according to claim 2 , wherein openings facing from the conveying front surface to a rear surface are formed at downstream ends of the plurality of protrusions.

4. The conveying device of claim 2 , wherein the plurality of protrusions are formed by shuttering.

5. The transport device of claim 2 , wherein the plurality of protrusions are formed by embossing.

6. The transport section includes a trough, The transport device according to claim 2 , wherein the angle of the trough with respect to the horizontal direction when viewed from the side is in the range of 9 to 12 degrees.

7. The conveying section includes a chute, The conveying device according to claim 2 or 6, wherein the angle of the chute with respect to the horizontal direction when viewed from the side is in the range of 40 to 60 degrees.

8. 2. The conveying device according to claim 1, wherein a contact angle between the conveying surface and water droplets formed on the conveying surface on which the coating layer is formed is 40 degrees or less.

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