Measuring device
The weighing device addresses incorrect hopper mounting by using hoppers with differently sized pins and engagement parts, ensuring correct attachment and preventing misattachment, thus maintaining accurate weighing operations.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- ISHIDA CO LTD
- Filing Date
- 2024-11-27
- Publication Date
- 2026-06-08
Smart Images
Figure 2026092836000001_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a weighing device.
Background Art
[0002] Patent Document 1 (Japanese Patent Application Laid-Open No. 2006-105860) describes a weighing unit for weighing an article. The weighing unit of Patent Document 1 includes hoppers having different roles and mounting positions, such as a stock hopper for temporarily storing articles and a weighing hopper for weighing articles.
Summary of the Invention
Problems to be Solved by the Invention
[0003] In the weighing unit proposed in Patent Document 1, when assembling the weighing unit, the mounting positions of the hoppers with different roles and mounting positions may be mistaken.
[0004] An object of the present invention is to prevent misattachment of the hopper.
Means for Solving the Problems
[0005] The weighing device according to the first aspect includes a hopper and a main body. The hopper temporarily retains articles and discharges the retained articles. The main body has a first part for attaching the hopper. The hopper has a second part for being attached to the main body. The second part engages with the first part. One of the first part and the second part has a first pin and a second pin. The first pin has a first thickness. The second pin is thicker than the first pin. The other of the first part and the second part has a first engaging part and a second engaging part. The first engaging part engages with the first pin. The second engaging part engages with the second pin. The width of the first engaging part is larger than the first thickness and smaller than the second thickness.
[0006] In this weighing device, misattachment of the hopper can be prevented.
[0007] The weighing device of the second perspective is the weighing device of the first perspective, comprising two types of hoppers: a plurality of first hoppers and a second hopper. The second hoppers are installed after all of the first hoppers have been installed. One of the first parts for installing the first hoppers and the second part of the first hopper has a first pin and a second pin. The first pin has a first diameter. The second pin is thicker than the first pin.
[0008] A weighing device of the third perspective is a weighing device of the first or second perspective, wherein the other of the first and second parts further has a third engagement part and a fourth engagement part. The third and fourth engagement parts are engaged after the first and second engagement parts. The lengths of the first and second engagement parts are longer than the lengths of the third and fourth engagement parts.
[0009] The weighing device of the fourth aspect is a weighing device of any of the first to third aspects, comprising two types of hoppers: a pool hopper and a weighing hopper. The pool hopper is positioned upstream of the flow of goods. The weighing hopper is positioned downstream of the flow of goods. In the pool hopper and the weighing hopper, the positions of the first pin and the second pin are reversed when viewed from the front. Alternatively, in the first part for attaching the pool hopper and the first part for attaching the weighing hopper, the positions of the first pin and the second pin are reversed when viewed from the front.
[0010] The weighing device of the fifth aspect is a weighing device of any of the first to fourth aspects, further comprising a drive unit. The drive unit opens and closes the gate of the hopper. When the hopper is attached to the main body, the second part and the drive unit do not come into contact.
[0011] The weighing device of the sixth aspect is a weighing device of any of the first to fifth aspects, wherein one of the first and second parts has two extensions. The extensions extend to the other of the first and second parts. The two extensions face each other so as to form a U shape when viewed from above. The first pin and the second pin are each attached to the two extensions. [Effects of the Invention]
[0012] In this invention, the first pin and the second pin for attaching the hopper have different diameters, thus preventing incorrect installation of the hopper. [Brief explanation of the drawing]
[0013] [Figure 1] This is a perspective view of a weighing device 100 according to one embodiment. [Figure 2] This diagram shows the weighing device 100 with one pool hopper 20 and one weighing hopper 30 remaining. [Figure 3] This diagram shows the weighing device 100 with one pool hopper section 111 and one weighing hopper section 112 remaining. [Figure 4] This is a top view of Part 1, Item 11. [Figure 5] This is an enlarged view of the first part 11 of the main body 10. [Figure 6] This is an enlarged view of the first part 111 for the pool hopper. [Figure 7] This is a perspective view of Pool Hopper 20. [Figure 8A] This is a side view of the second part 21 on the first attachment part 21a side of the pool hopper 20. [Figure 8B] This is a side view of the second part 21 on the second attachment section 21b side of the pool hopper 20. [Figure 9] This is an enlarged side view of Part 1, page 11 and Part 2, page 21. [Figure 10] This is a perspective view of the weighing hopper 30. [Figure 11] This diagram illustrates the process of attaching the pool hopper 20 to the main unit 10. [Figure 12] This diagram illustrates the process of attaching the pool hopper 20 to the main unit 10. [Modes for carrying out the invention]
[0014] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the description of the drawings, the same reference numerals are assigned to the same elements, and duplicate descriptions are omitted. In the following description, for convenience, the front-back, up-down, and left-right directions with respect to the weighing device 100 are used. Orthogonal axes indicating these directions are shown in some of the figures. The front-back direction and the left-right direction both extend horizontally. The up-down direction is equal to the vertical direction. Also, expressions such as the same, horizontal, parallel, etc. may be used, and these include not only cases where they are completely the same, horizontal, parallel, etc., but also cases where they are substantially the same, horizontal, parallel, etc.
[0015] (1) Overall configuration FIG. 1 and FIG. 2 are schematic configuration diagrams of a weighing device 100 according to an embodiment of the present invention. The weighing device 100 includes a main body 10, a plurality of pool hoppers 20, a plurality of weighing hoppers 30, and a drive unit 40 (see FIG. 9).
[0016] The weighing device 100 weighs an article using a plurality of weighing hoppers 30 and combines the weight values measured by each weighing hopper 30 so as to obtain a predetermined total weight. The weighing device 100 discharges the combined article of the predetermined total weight downward.
[0017] Specifically, when an article to be weighed is conveyed above the weighing device 100, it is placed on a dispersion feeder (not shown) and is radially dispersed by the vibration of the dispersion feeder.
[0018] The article is sent to the pool hopper 20 via a radiation trough (not shown) following the dispersion feeder. After being temporarily retained in the pool hopper 20, the article is put into the weighing hopper 30 located below each pool hopper 20.
[0019] The weight of the items placed in each weighing hopper 30 is measured by a load cell (weight detector) installed in each weighing hopper 30. Based on the measured weight of the items in each weighing hopper 30, a combination calculation is performed to determine which weighing hopper 30 should discharge the items from to ensure that the total weight or quantity remains within the acceptable range. Based on the calculation results, some of the weighing hoppers 30 discharge the items into a collective discharge chute (not shown).
[0020] The items handled by the weighing device 100 are not limited to any particular type, but include powdered or granular items such as tea leaves, dried soup ingredients, seasonings, tablets, and capsules.
[0021] Furthermore, in the following description, the first part 11 of the main body 10 is described as a mounting mechanism, and the second part 21 of the pool hopper 20 and metering hopper 30 is described as a hanger mechanism, with the first part 11 being the mounting side and the second part 21 being the receiving side. However, the first part 11 of the main body 10 may be described as a hanger mechanism, and the second part 21 of the pool hopper 20 and metering hopper 30 may be described as a mounting mechanism, with the first part 11 being the receiving side and the second part 21 being the mounting side.
[0022] (2) Detailed configuration (2-1) Main body 10 Multiple pool hoppers 20 and multiple weighing hoppers 30 are attached to the main unit 10.
[0023] As shown in Figure 3, the main body 10 has a first part 11. The first part 11 is for attaching the pool hopper 20 and the weighing hopper 30.
[0024] As shown in Figures 3 and 4, the first part 11 has two extensions 12. The extensions 12 extend toward the second part 21. The two extensions 12 face each other so as to form a U shape when viewed from above.
[0025] Part 11 includes a pool hopper part 111 for mounting the pool hopper 20 and a weighing hopper part 112 for mounting the weighing hopper 30. The pool hopper part 111 is mounted so as to cover the opening 10a of the main body 10. The weighing hopper part 112 is mounted on the housing case 10b of the drive unit 40 for the weighing hopper 30.
[0026] As shown in Figure 5, the first part 111 for the pool hopper includes a first pin 111a, a second pin 111b, a third pin 111c, and a fourth pin 111d. The first pin 111a, the second pin 111b, the third pin 111c, and the fourth pin 111d are members for attaching the pool hopper 20. The first pin 111a, the second pin 111b, the third pin 111c, and the fourth pin 111d are arranged in the extended part 12.
[0027] In a front view, the first pin 111a and the third pin 111c are located on the left side of the first part 111 for the pool hopper. The second pin 111b and the fourth pin 111d are located on the right side of the first part 111 for the pool hopper.
[0028] The first pin 111a has a first thickness T1. The second pin 111b has a second thickness T2. The second thickness T2 is thicker than the first thickness T1. That is, the second pin 111b is thicker than the first pin 111a. The thickness of the third pin 111c and the thickness of the fourth pin 111d are the same.
[0029] As shown in Figure 6, the distance D1 between the first pin 111a and the second pin 111b is shorter than the distance D2 between the third pin 111c and the fourth pin 111d. Therefore, when attaching the pool hopper 20 to the main body 10, the widthwise distance D1 between the first and second hooking parts 21a and 21b is shorter than the widthwise distance between them, creating some clearance in the width direction. As a result, when hooking the first and second hooking parts 21a and 21b onto the first and second pins 111a and 21b respectively, the first and second hooking parts 21a and 21b can be hooked onto the first and second pins 111a and 21b even if their left-right positions are slightly misaligned or the orientation of the pool hopper 20 is slightly tilted.
[0030] The length L10 of the first pin 111a and the length L20 of the second pin 111b are the same. The length L30 of the third pin 111c and the length L40 of the fourth pin 111d are the same. The lengths L10 of the first pin 111a and L20 of the second pin 111b are longer than the lengths L30 of the third pin 111c and L40 of the fourth pin 111d. As a result, when attaching the first and second attachment parts 21a and 21b to the first and second pins 111a and 21b respectively, the first and second attachment parts 21a and 21b can be attached to the first and second pins 111a and 21b even if their left-right positions are slightly misaligned or the orientation of the pool hopper 20 is slightly tilted.
[0031] As shown in Figure 5, the first part 112 for the weighing hopper has a first' pin 112a, a second' pin 112b, a third' pin 112c, and a fourth' pin 112d. The first' pin 112a, the second' pin 112b, the third' pin 112c, and the fourth' pin 112d are members for attaching the weighing hopper 30. The first' pin 112a, the second' pin 112b, the third' pin 112c, and the fourth' pin 112d are arranged in the extended part 12.
[0032] The first' pin 112a has a third thickness T3. The second' pin 112b has a fourth thickness T4. The third thickness T3 is thicker than the fourth thickness T4. That is, the first' pin 112a is thicker than the second' pin 112b. The thickness of the third' pin 112c is the same as the thickness of the fourth' pin 112d.
[0033] In a front view, the 1' pin 112a and the 3' pin 112c are located on the left side of the first section 112 for the weighing hopper. The 2' pin 112b and the 4' pin 112d are located on the right side of the first section 112 for the weighing hopper. Therefore, the thinner pin (1st pin 111a) and the thicker pin (2nd pin 111b) of the first section 111 for the pool hopper, and the thicker pin (1' pin 112a) and the thinner pin (2' pin 112b) of the first section 112 for the weighing hopper, are positioned in reverse order in a front view. In other words, the thicker pin (2nd pin 111b) of the first section 111 for the pool hopper, and the thicker pin (1' pin 112a) of the first section 112 for the weighing hopper, are positioned in reverse order in a front view.
[0034] The distance between the 1st' pin 112a and the 2nd' pin 112b is shorter than the distance between the 3rd' pin 112c and the 4th' pin 112d.
[0035] The length of the first' pin 112a is the same as the length of the second' pin 112b. The length of the third' pin 112c is the same as the length of the fourth' pin 112d. The lengths of the first' pin 112a and the second' pin 112b are longer than the lengths of the third' pin 112c and the fourth' pin 112d.
[0036] (2-2) Pool Hoppers 20 Multiple pool hoppers 20 are arranged in a circular pattern. The pool hoppers 20 are positioned upstream of the weighing hopper 30 relative to the flow of goods.
[0037] Each pool hopper 20 temporarily holds the items supplied from above. A gate 22 is provided at the bottom of each pool hopper 20. By opening and closing the gate 22, the items held in the pool hopper 20 are discharged into the weighing hopper 30 located below the gate 22.
[0038] The pool hopper 20 may be installed after all the weighing hoppers 30 have been installed.
[0039] As shown in Figure 7, the pool hopper 20 has a second part 21 for attachment to the main body 10. The second part 21 engages with the first part 11. The second part 21 is formed to protrude from the main body of the pool hopper 20.
[0040] As shown in Figures 7, 8A, and 8B, the second part 21 includes a base part 23, a projection 24, a locking part 25, a first engaging part 21a, a second engaging part 21b, a third engaging part 21c, a fourth engaging part 21d, a guide 26, and a second projection 27.
[0041] The projection 24 is formed at the lower end of the second part 21. The projection 24 protrudes downward from the base part 23. The projection 24 is the part that catches on the first pin 111a and the second pin 111b. The lengths L1 and L2 of the projection 24 are longer than the lengths L1' and L2' of the locking part 25. Therefore, when attaching the pool hopper 20 to the main body 10, the first engaging part 21a and the second engaging part 21b are less likely to come off.
[0042] The locking portion 25 is formed at the lower end of the second portion 21. The locking portion 25 protrudes downward from the base portion 23. In a side view, the locking portion 25 is positioned between the main body portion of the pool hopper 20 and the projection portion 24. The locking portion 25, together with the projection portion 24, is the part that sandwiches and fixes the first pin 111a and the second pin 111b.
[0043] The first engagement portion 21a is a groove defined by the base portion 23, the projection portion 24, and the locking portion 25. The first engagement portion 21a engages with the first pin 111a.
[0044] The width W1 of the first engagement portion 21a is greater than the first thickness T1 and less than the second thickness T2. The width W1 of the first engagement portion 21a is the horizontal distance between the projection 24 and the locking portion 25.
[0045] The second engagement portion 21b is a groove defined by the base portion 23, the projection portion 24, and the locking portion 25. The second engagement portion 21b engages with the second pin 111b.
[0046] The width W2 of the second engagement portion 21b is greater than the second thickness T2. The width W2 of the second engagement portion 21b is the horizontal distance between the projection portion 24 and the locking portion 25.
[0047] The third engagement portion 21c is a groove defined by the base portion 23 and the second projection portion 27. The third engagement portion 21c is positioned above the first engagement portion 21a. The third engagement portion 21c engages with the third pin 111c.
[0048] The second projection 27 is positioned above the projection 24. The second projection 27 protrudes away from the main body of the pool hopper 20 and also protrudes downward.
[0049] As shown in Figures 8A and 8B, the length L1 of the first engagement portion 21a is longer than the length L3 of the third engagement portion 21c. The length L1 of the first engagement portion 21a and the length L3 of the third engagement portion 21c are the lengths of the projection 24 and the second projection 27, respectively.
[0050] The fourth engagement portion 21d is a groove defined by the base portion 23 and the second projection portion 27. The fourth engagement portion 21d is positioned above the second engagement portion 21b. The fourth engagement portion 21d engages with the fourth pin 111d.
[0051] The length L2 of the second engagement portion 21b is longer than the length L4 of the fourth engagement portion 21d. The lengths L2 of the second engagement portion 21b and L4 of the fourth engagement portion 21d are the lengths of the projection 24 and the second projection 27, respectively.
[0052] As shown in Figure 9, the guide 26 is positioned between the first engagement portion 21a and the third engagement portion 21c, and between the second engagement portion 21b and the fourth engagement portion 21d. The guide 26 is a slope. The guide 26 has a shape that descends in the direction approaching the main body 10.
[0053] When attaching the pool hopper 20 to the main body 10, the guide 26 contacts the third pin 111c and the fourth pin 111d. This prevents the pool hopper 20 from moving any further upward. As a result, the frame 28 of the pool hopper 20 does not come into contact with the drive unit 40. Similarly, when removing the pool hopper 20 from the main body 10, the guide 26 contacts the third pin 111c and the fourth pin 111d. This prevents the pool hopper 20 from moving any further upward.
[0054] (2-3) Measuring hopper 30 The configuration of the weighing hopper 30 is almost the same as that of the pool hopper 20. Therefore, the explanation of the weighing hopper 30 will focus on the differences from the pool hopper 20.
[0055] Multiple weighing hoppers 30 are arranged in a circular pattern. The weighing hoppers 30 are positioned downstream of the pool hopper 20 relative to the flow of goods.
[0056] Each weighing hopper 30 temporarily holds the items discharged from each pool hopper 20 and weighs the items. A gate 32 is provided at the bottom of each weighing hopper 30. By opening and closing the gate 32, the items held in each weighing hopper 30 are discharged into a discharge chute (not shown) located below the gate 32. The items discharged from the discharge chute are supplied to subsequent packaging equipment, etc.
[0057] As shown in Figure 10, the weighing hopper 30 has a second part 21 for attachment to the main body 10. The second part 21 engages with the first part 11 of the main body 10. The second part 21 is formed to protrude from the main body of the weighing hopper 30.
[0058] In the weighing hopper 30, the width W1 of the first engaging portion 21a is greater than the third diameter T3. The width W2 of the second engaging portion 21b is greater than the fourth diameter T4 and smaller than the third diameter T3.
[0059] (2-4) Drive unit 40 The drive unit 40 opens and closes the gate 22 of the pool hopper 20 and the gate 32 of the weighing hopper 30.
[0060] When attaching the pool hopper 20 and the weighing hopper 30 to the main body 10, the drive unit 40 and the second part 21 do not come into contact.
[0061] (3) Installation procedure In the weighing device 100 of this embodiment, for example, first, all of the weighing hoppers 30 are attached to the main body 10. Then, the pool hoppers 20 are attached to the main body 10. Details will be explained below. Figures 11 and 12 are enlarged views of the second part of the pool hopper 20 and the first part of the main body 10, but the weighing hoppers 30 are in almost the same positional relationship, so the explanation of the installation operation for the weighing hoppers 30 will also be given using Figures 11 and 12.
[0062] As shown in Figure 11, first, the first hooking part 21a and the second hooking part 21b of the weighing hopper 30 are hooked onto the first' pin 112a and the second' pin 112b, respectively. Then, the weighing hopper 30 is rotated so that it is closer to the main body 10, with the positions of the first' pin 112a and the second' pin 112b as the center.
[0063] When the weighing hopper 30 is close enough to the main body 10, the weighing hopper 30 is raised onto the first' pin 112a and the second' pin 112b, as shown in Figure 12. By pushing the weighing hopper 30 towards the main body 10, the third engaging part 21c and the fourth engaging part 21d are hooked onto the third' pin 112c and the fourth' pin 112d, respectively.
[0064] The above operations are repeated for all of the weighing hoppers 30.
[0065] Next, attach the pool hopper 20. As shown in Figure 11, hook the first hooking portion 21a and the second hooking portion 21b of the pool hopper 20 onto the first pin 111a and the second pin 111b, respectively. Then, rotate the pool hopper 20 so that it approaches the main body 10, with the positions of the first pin 111a and the second pin 111b as the pivot point.
[0066] Once the pool hopper 20 is close enough to the main body 10, the pool hopper 20 is raised onto the first pin 111a and the second pin 111b, as shown in Figure 12. By pushing the pool hopper 20 towards the main body 10, the third engaging portion 21c and the fourth engaging portion 21d are hooked onto the third pin 111c and the fourth pin 111d, respectively.
[0067] The above operations are repeated for all of the pool hoppers 20.
[0068] (4) Features (4-1) The weighing device 100 of this embodiment comprises a pool hopper 20, a weighing hopper 30, and a main body 10. The pool hopper 20 and the weighing hopper 30 temporarily hold articles and discharge the held articles. The main body 10 has a first part 11 for attaching the pool hopper 20 and the weighing hopper 30. The pool hopper 20 and the weighing hopper 30 have a second part 21 for attaching to the main body 10. The second part 21 engages with the first part 11. The first part 11 has a first pin 111a and a second pin 111b, or a first' pin 112a and a second' pin 112b. The first pin 111a has a first diameter T1. The second pin 111b has a second diameter T2. The second pin 111b is thicker than the first pin 111a. The first' pin 112a has a third diameter T3. The second' pin 112b has a fourth diameter T4. The first' pin 112a is thicker than the second' pin 112b. The second part 21 has a first engaging part 21a and a second engaging part 21b. The first engaging part 21a engages with the first pin 111a or the first' pin 112a. The second engaging part 21b engages with the second pin 111b or the second' pin 112b. In the pool hopper 20, the width W1 of the first engaging part 21a is greater than the first diameter T1 and less than the second diameter T2. In the weighing hopper 30, the width W2 of the second engaging part 21b is greater than the fourth diameter T4 and less than the third diameter T3.
[0069] In the weighing device 100 of this embodiment, the first pins 111a, 112a and the second pins 111b, 112b have different diameters, which prevents incorrect installation of the pool hopper 20 and the weighing hopper 30.
[0070] (4-2) The weighing device 100 comprises two types of hoppers: a plurality of pool hoppers 20 and a weighing hopper 30. The pool hoppers 20 are installed after all the weighing hoppers 30 have been installed. The first part 11 for installing the pool hoppers 20 or weighing hoppers 30 has a first pin 111a or a first' pin 112a and a second pin 111b or a second' pin 112b. The first pin 111a has a first diameter T1. The first' pin 112a has a third diameter T3. The second pin 111b is thicker than the first pin 111a. The first' pin 112a is thicker than the second' pin 112b.
[0071] In the weighing device 100 of this embodiment, it is possible to prevent incorrect installation of the pool hopper 20 and the weighing hopper 30.
[0072] (4-3) The second part 21 further includes a third engagement portion 21c and a fourth engagement portion 21d. The third engagement portion 21c and the fourth engagement portion 21d are applied after the first engagement portion 21a and the second engagement portion 21b. The length L1 of the first engagement portion 21a and the length L2 of the second engagement portion 21b are longer than the length L3 of the third engagement portion and the length L4 of the fourth engagement portion 21d.
[0073] In the weighing device 100 of this embodiment, when attaching the pool hopper 20 and the weighing hopper 30 to the main body 10, the first hooking part 21a and the second hooking part 21b are first hooked onto the first pins 111a, 112a and the second pins 111b, 112b, respectively. Then, the pool hopper 20 and the weighing hopper 30 are rotated so that they approach the main body 10, centering on the positions of the first pins 111a, 112a and the second pins 111b, 112b. Once the pool hopper 20 and the weighing hopper 30 are close enough to the main body 10, the pool hopper 20 and the weighing hopper 30 are pushed towards the main body 10, and the third hooking part 21c and the fourth hooking part 21d are hooked onto the third pins 111c, 112c and the fourth pins 111d, 112d, respectively. In this case, the length L1 of the first engagement part 21a and the length L2 of the second engagement part 21b are longer than the length L3 of the third engagement part and the length L4 of the fourth engagement part 21d, so the first engagement part 21a and the second engagement part 21b are less likely to come off the first pins 111a, 112a and the second pins 111b, 112b while rotating or riding up.
[0074] Furthermore, when attaching the pool hopper 20 and the weighing hopper 30 to the main body 10, it is only necessary to aim at the first two pins 111a, 112a and the second two pins 111b, 112b, and there is no need to engage all four pins simultaneously, making the installation easy.
[0075] Furthermore, the pool hopper 20 or weighing hopper 30 is raised onto the first pins 111a, 112a and the second pins 111b, 112b, and then the first pins 111a, 112a and the second pins 111b, 112b are dropped. This provides a sense of attachment and prevents incorrect attachment.
[0076] (4-4) The weighing device 100 includes two types of hoppers: a plurality of pool hoppers 20 and a weighing hopper 30. The pool hoppers 20 are positioned upstream of the flow of goods. The weighing hopper 30 is positioned downstream of the flow of goods. In the first section 111 for pool hoppers and the first section 112 for weighing hoppers, the positions of the thinner pin (first pin 111a in the first section 111 for pool hoppers, and second' pin 112b in the first section 112 for weighing hoppers) and the thicker pin (second pin 111b in the first section 111 for pool hoppers, and first' pin 112a in the first section 112 for weighing hoppers) are reversed when viewed from the front.
[0077] In the weighing device 100 of this embodiment, the diameters of the first pins 111a and 112a and the diameters of the second pins 111b and 112b are different in the first part 111 for the pool hopper and the first part 112 for the weighing hopper, thus preventing incorrect installation of the pool hopper 20 and the weighing hopper 30.
[0078] (4-5) The weighing device 100 further includes a drive unit 40. The drive unit 40 opens and closes the gate 22 of the pool hopper 20 and the gate 32 of the weighing hopper 30. When the pool hopper 20 and the weighing hopper 30 are attached to the main body 10, the second part 21 and the drive unit 40 do not come into contact.
[0079] In the weighing device 100 of this embodiment, the drive unit 40 is not moved from its correct position when installing the pool hopper 20 and the weighing hopper 30.
[0080] (4-6) The weighing device 100 has a first part 11 which has two extensions 12. The extensions 12 extend to the second part 21. The two extensions 12 face each other so as to form a U shape when viewed from above. The first pin 111a, the first' pin 112a and the second pin 111b, the second' pin 112b are each attached to the two extensions 12.
[0081] In the weighing device 100 of this embodiment, the presence of the extended portion 12 makes it easy to attach the first portion 111 for the pool hopper and the first portion 112 for the weighing hopper.
[0082] (5) Variant (5-1) Variation A In the above embodiment, the first part 11 has first pins 111a, 112a and second pins 111b, 112b, and the second part 21 has first engagement portion 21a and second engagement portion 21b, but is not limited thereto. The second part 21 may have first pins and second pins, and the first part 11 may have first engagement portion and second engagement portion.
[0083] In this case, in the pool hopper 20 and the weighing hopper 30, the positions of the thinner first pin and the thicker second pin are reversed when viewed from the front.
[0084] (5-2) Variation B In the above embodiment, the diameters of the first pin 111a and the second pin 111b, and the diameters of the first' pin 112a and the second' pin 112b are varied in both the first pool hopper section 111 and the first weighing hopper section 112. However, the embodiment is not particularly limited to this.
[0085] In either the first section 111 for the pool hopper or the first section 112 for the weighing hopper, the thickness of the first pin 111a and the second pin 111b, or the thickness of the first' pin 112a and the second' pin 112b, may be changed.
[0086] In particular, since the weighing hopper 30 is installed before the pool hopper 20, the thickness of the first' pin 112a and the second' pin 112b of the first part 112 for the weighing hopper can be changed to sufficiently prevent installation errors.
[0087] (5-3) Modification C In the above embodiment, the length L1 of the first engagement portion 21a and the length L2 of the second engagement portion 21b of the second portion 21 are both longer than the length L3 of the third engagement portion 21c and the length L4 of the fourth engagement portion 21d. However, the embodiment is not limited to this.
[0088] The length L1 of the first engaging portion 21a and the length L2 of the second engaging portion 21b may be longer than the length L3 of the third engaging portion 21c and the length L4 of the fourth engaging portion 21d.
[0089] If either the length L1 of the first engaging part 21a or the length L2 of the second engaging part 21b is longer than the length L3 of the third engaging part 21c or the length L4 of the fourth engaging part 21d, the pool hopper 20 or the measuring hopper 30 will be less likely to come off when attaching it to the main body 10. [Explanation of Symbols]
[0090] 10: Main unit 11: Part 1 12: Extension part 20: Pool Hopper (an example of the second hopper) 21: Part 2 22, 32: Gate 21a: First attachment section 21b: Second attachment section 21c: Third attachment point 21d: Fourth support section 30: Weighing hopper (an example of the first hopper) 40: Drive unit 100:Measuring device 111: Part 1 for Pool Hoppers 111a: Pin 1 111b: Pin 2 111c: Pin 3 111d: Pin 4 112: Part 1 for weighing hopper 112a: Pin 1' 112b: 2' pin 112c: 3rd pin 112d: 4th pin [Prior art documents] [Patent Documents]
[0091] [Patent Document 1] Japanese Patent Publication No. 2006-105860
Claims
1. A hopper for temporarily storing items and for discharging the stored items, A main body having a first part for attaching the hopper, Equipped with, The hopper has a second part that engages with the first part and is attached to the main body, One of the first and second parts has a first pin having a first diameter and a second pin having a second diameter that is thicker than the first pin. The other of the first and second parts has a first engagement portion that engages with the first pin and a second engagement portion that engages with the second pin, The width of the first engagement portion is greater than the first thickness and less than the second thickness. Weighing device.
2. The weighing device comprises two types of hoppers: a plurality of first hoppers and a second hopper that is installed after all of the first hoppers have been installed. The first part for attaching the first hopper and the second part of the first hopper each have a first pin having a first diameter and a second pin having a second diameter that is thicker than the first pin. The weighing device according to claim 1.
3. The other of the first and second parts further has third and fourth engaging parts that are engaged after the first and second engaging parts, The lengths of the first and second engaging portions are longer than the lengths of the third and fourth engaging portions. The weighing device according to claim 1.
4. The weighing device comprises two types of hoppers: a pool hopper positioned upstream of the flow of the articles, and a weighing hopper positioned downstream of the flow of the articles. In the pool hopper and the weighing hopper, the positions of the first pin and the second pin are reversed when viewed from the front. Or, In the first part for attaching the pool hopper and the first part for attaching the weighing hopper, the positions of the first pin and the second pin are reversed when viewed from the front. The weighing device according to claim 1.
5. The weighing device further comprises a drive unit for opening and closing the gate of the hopper, When attaching the hopper to the main body, the second part and the drive unit do not come into contact. The weighing device according to claim 1.
6. One of the first and second parts has two extending portions that extend to the other of the first and second parts. The two extended portions face each other so as to form a U-shape when viewed from above. The first pin and the second pin are each attached to the two extended portions. The weighing device according to claim 1.