JP2010281745A - Combination weighing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To facilitate hopper removal work as to a combination weighing device with a hopper for downwardly discharging a weighed article. <P>SOLUTION: The combination weighing device includes a locking pin for locking a timing hopper provided on an instrument body, a locking guide provided on the timing hopper and engaging with the locking pin from above and horizontally, a front guide pin and a rear guide pin provided in front and in the rear of the timing hopper, and guides for guiding both guide pins. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a combination weighing device.

  When an article is weighed to a predetermined target weight and packaged, a structure is generally employed in which a combination weighing device is placed on a gantry and a packaging machine is installed below the combination weighing device. Below the discharge port of the combination weighing device, there is provided a timing hopper for temporarily storing the weighed articles and discharging and supplying the articles in accordance with the operation timing of the packaging machine. The timing hopper may be removed from the combination weighing device and reattached for maintenance. However, there is a problem that the timing hopper is heavy and has a large work load when being attached to and detached from the combination weighing device on the gantry.

  Therefore, a structure has been proposed in which the hopper support frame that supports the hopper is supported by a roller member so that it can be pulled out in the horizontal direction with respect to the frame of the main body of the apparatus, and the hopper can be pulled out to a position where it can be easily attached and detached during maintenance. (For example, refer to Patent Document 1). In addition, a latching pin (rotating shaft) supported rotatably with respect to the apparatus main body is provided on the side and upper side of the hopper, and the timing hopper is rotated around the rotating shaft, so that attachment / detachment can be easily performed. There has been proposed a structure which is lifted up to a position (see, for example, Patent Document 2).

Japanese Utility Model Publication No. 5-14182 JP 2008-26250 A

  However, in the structure in which the hopper support frame can be pulled out in the horizontal direction, the backlash between the hopper support table and the rail member generates vibrations due to opening and closing of the hopper, which may cause an error in combination weighing. In addition, the long rail member for guiding the hopper support base inevitably increases the size of the apparatus main body, and further restricts the structure of the apparatus in order to secure a space for arranging the rail members. On the other hand, even if the hopper support base is pulled out, the height position of the hopper does not change, so the work burden when attaching and detaching the hopper is not greatly reduced.

  In addition, even when the hopper is rotated around the latch pin (rotating shaft) and lifted, the backlash between the latch pin and the groove that supports the rotation causes vibration due to the opening and closing of the hopper, resulting in errors in combination weighing. There is a risk of causing. Moreover, since the rotary shaft is provided on the side and above the hopper, the rotational moment required to lift the hopper is large, and the work load is correspondingly large. Furthermore, there is a problem that the structure of the apparatus is restricted because the hopper rotates greatly due to the setting position of the rotation axis and it is necessary to secure a space along the rotation locus.

  In view of such circumstances, an object of the present invention is to facilitate detachment work of a hopper in a combination weighing device including a hopper that discharges a weighed article downward.

The combination weighing device of the present invention measures a supplied article with a plurality of weighing units, performs a combination calculation with the measured measurement values, and stores a hopper in which articles of a combination having a predetermined target weight are stored. A combination weighing device that selects, discharges an article in the selected hopper to a lower discharge port, and discharges the article to the outside of the apparatus by a timing hopper provided below the discharge port;
A locking pin provided in the apparatus main body for locking the timing hopper;
A locking guide provided on the timing hopper and engaged with the locking pin from above and horizontally;
Front guide pins and rear guide pins provided before and after the timing hopper;
A guide member for guiding the front guide pin and the rear guide pin;
With
The guide member has a convex portion that moves the rear guide pin upward and then moves downward as the rear guide pin moves back and forth, so that the locking guide is moved relative to the locking pin. The combination weighing device is engaged from above.

  Further, the combination weighing device according to the present invention is a vertical direction restriction that restricts the vertical movement of the front guide pin or the rear guide pin when the locking guide is engaged with the locking pin. It is good also as providing a member.

  Furthermore, the timing hopper may be provided with a handle on the locking guide side, or may be provided with a handle in front of the front guide pin. Further, a handle may be provided on the left and right of the timing hopper.

  According to the combination weighing device of the present invention, the timing hopper is locked by engaging the locking guide with respect to the locking pin on the apparatus main body side from above and in the horizontal direction. The occurrence of weighing errors can be suppressed. In addition, the timing hopper is guided in the vertical direction by the rear guide pin moving back and forth on the convex part of the guide member, and the locking guide engages with the locking pin from above. Therefore, the attaching / detaching work is easily performed.

  In addition, when the guide member is provided with a vertical direction regulating member that regulates the vertical movement of the front guide pin and the rear guide pin in a state in which the locking guide is engaged with the locking pin, the timing hopper is more stable. It is difficult to occur and the generation of measurement errors can be reliably suppressed.

  Furthermore, by providing a handle on the locking guide side of the timing hopper, it becomes easier to lift the locking guide and engage the locking pin from above. When a handle is provided in front of the front guide pin in the timing hopper, the rear guide pin is lifted with the front guide pin as a fulcrum, thereby making it easier to engage the locking guide with the locking pin from above. . In the case where the handles are provided on the left and right sides of the timing hopper, the rear guide pin is lifted by controlling the inclination of the entire timing hopper, thereby making it easier to engage the locking guide with the locking pin from above.

The side view which shows the whole combination weighing | measuring apparatus of 1st embodiment. The top view which shows the whole combination weighing | measuring apparatus of FIG. The single-piece | unit perspective view of the timing hopper with which the combination weighing | measuring apparatus of FIG. 1 is equipped. FIG. 2 is an enlarged side view of the vicinity of a timing hopper in the combination weighing device of FIG. 1. FIG. 2 is an enlarged plan view near a timing hopper in the combination weighing device of FIG. 1. The side view which shows the attachment or detachment procedure of the timing hopper of the combination weighing device of FIG. The side view which shows the modification of the guide member in the combination weighing | measuring apparatus of FIG. The side view which shows the attachment / detachment procedure of the hopper in the combination weighing | measuring apparatus of 2nd embodiment. The perspective view which shows the timing hopper in the combination weighing | measuring device of 2nd embodiment, and the modification of its handle. The side view which shows the modification of the guide member in the combination weighing | measuring apparatus of 2nd embodiment.

(First embodiment of the present invention)
A combination weighing device according to a first embodiment of the present invention will be described with reference to FIGS. In the following description, in order to make it easier to understand the contents of the present invention, the front / rear / right / left directions are specified, but this does not limit the installation direction of the present invention device, and this is also within the scope of the claims. It is the same.

(Combination weighing device 1)
As shown in FIGS. 1 and 2, the combination weighing device 1 according to the first embodiment of the present invention connects two combination weighing devices 2 to each other and places them on a gantry 1a having a predetermined height. The articles that are placed and weighed in combination so as to have a predetermined target weight are sequentially discharged. A vibration distribution table 3 having a generally circular shape in plan view is provided at a substantially central portion above each combination weighing device 2, and a starting end portion 4a is located below the outer peripheral edge 3a, and nine units extending radially therefrom. A plurality of vibration troughs 4 are provided.

  A pool hopper 51, a weighing hopper 52, and a storage hopper 53 are arranged below the end portion 4b of each vibration trough 4 so as to be continuous from top to bottom. Each weighing hopper 52 serving as a weighing unit is supported by weighing means (not shown) such as a load cell, and individually weighs articles stored in the hopper. Each storage hopper 53 is extended so that the lower end thereof is guided to the upper opening 6 a of the funnel-shaped collecting chute 6 provided in each combination weighing device 2. A timing hopper 7 is provided below a discharge port 6 b formed at the lower end of each collecting chute 6.

  The weighing by the combination weighing device 1 described above is performed as follows. When an article to be weighed is supplied to the upper surface of each vibration dispersion table 3, the vibration dispersion table 3 conveys the article toward the outer peripheral edge 3a while radially dispersing the article, and the start edge of the vibration trough 4 from the outer peripheral edge 3a. To the unit 4a. The vibration trough 4 conveys the supplied article to the outside and supplies it to the pool hopper 51 from the terminal end 4b. The pool hopper 51 temporarily stores the supplied article, and discharges it when the measurement hopper 52 directly below becomes empty.

  The weighing hopper 52 temporarily stores the articles supplied from the pool hopper 51, weighs them by the weighing means, and discharges them when the storage hopper 53 directly below becomes empty. The storage hopper 53 temporarily stores the articles supplied from the weighing hopper 52. The weighing value of the article is stored in a state associated with the hopper by a control unit (not shown). The control unit performs a combination operation on the storage hopper 53 or the weighing value of the weighing hopper 52 and the articles stored in the storage hopper 53, and the combination of hoppers that stores articles whose total weight is a predetermined target weight. Is selected.

  The articles in the hopper selected as a combination are discharged to the discharge port 6b of the collective chute 6 and temporarily stored in the timing hopper 7 provided therebelow. The timing hopper 7 discharges articles to the outside of the apparatus at a predetermined timing in conjunction with the operation of a downstream apparatus 8 (only a part is shown) provided below, and supplies the articles to the downstream apparatus 8. Here, the downstream device is a device for processing a weighed article, and corresponds to, for example, a packaging machine for packaging the article.

(Timing hopper 7 and its mounting structure)
As shown in FIGS. 3 to 5, the timing hopper 7 includes a substantially funnel-shaped hopper body 71 having an upper opening 71a and a lower opening 71b (FIG. 5), and a gate 72 rotatably attached to the lower opening 71b. And by rotating the gate 72, the bottom opening 71b is closed and the article is stored, or the bottom opening 71b is opened and the article is discharged downward, as shown by a one-dot chain line in FIG. . A roller portion 72 a is provided on the outer surface of the gate 72, and the gate driving arm 91 engages with this to rotate the gate 72.

  The timing hopper 7 is fixed to a main body of the combination weighing device 1 (hereinafter, referred to as an apparatus main body) by being attached to a gate driving unit 9 provided with a gate driving arm 91. As shown in FIG. 3, attachment members 731 and 732 for attachment to the gate drive unit 9 are provided on the back surface of the hopper body 71 so as to face each other in the left-right direction. The mounting members 731 and 732 are respectively formed with two upper and lower locking guides 731a and 732a having a notch groove and a hook shape protruding downward.

  On the other hand, as shown in FIGS. 4 and 5, a support member 92 is provided on the front surface of the gate driving unit 9 to which the timing hopper 7 is attached. Further, locking pins 92 a extending in the left-right direction one by one are formed at two locations on the left and right sides of the support member 92. The timing guide hopper 7 is locked and fixed to the apparatus main body by engaging the locking guides 731a and 732a described above with the four (plural) locking pins 92a. The notch grooves forming the locking guides 731a and 732a have a front and rear width at the front end portion (downward) that is sufficiently wide with respect to the diameter of the locking pin 92a, while the width decreases toward the back (upward). It has become. As a result, the locking guides 731a and 732a are engaged with the locking pin 92a from above and in the front-rear direction (horizontal direction), and no backlash occurs even if they are not fixed by a fastener or the like.

  As shown in FIGS. 3 to 5, front guide pins 74 and rear guide pins 75 arranged in the front-rear direction are provided on the left and right side surfaces of the hopper body 71. The guide pins 74 and 75 are projected so as to extend in the left-right direction, and notched grooves 74a and 75a are formed in the middle of the guide pins 74 and 75 over the entire circumference of the pin. As will be described later, when the timing hopper 7 is attached to the apparatus main body, the front and rear guide pins 74 and 75 are guided by a guide member 93 fixed to the apparatus main body, thereby reliably locking the timing hopper 7. Play a role. The notch grooves 74 a and 75 a have a width at the groove edge wider than the plate thickness of the guide member 93 and become narrower toward the bottom of the groove, thereby allowing the timing hopper 7 to move left and right when engaged with the guide member 93. Positioning in the direction prevents backlash.

  Here, the front guide pin 74 is located near the center line of the weight balance in the front-rear direction of the timing hopper 7 and slightly above the center line of the weight balance in the up-down direction of the timing hopper 7, The timing hopper 7 is set to have a small rotational moment when rotating around the front guide pin 74 as a rotation center. The timing hopper 7 is provided with a U-shaped handle 76 extending in the left-right direction so as to connect the upper portions of the mounting members 731, 732. The handle 76 is provided above the rearmost part away from the hopper rotation center (front guide pin 74) toward the locking guide when the timing hopper 7 described later is attached / detached. By gripping the handle 76, The locking guides 731a and 732a can be moved up and down by changing the inclination of the timing hopper 7 with a small force.

  As shown in FIGS. 4 and 5, the guide member 93 is a plate-like member that is provided at a position facing the timing hopper 7 in the left-right direction so as to sandwich the timing hopper 7 from both the left and right sides, and extends in the front-rear direction. It is fixed to a bar 94 that connects the portions 9 together. The guide member 93 includes a rail-shaped guide body 93a that extends in a substantially horizontal direction along the left and right side surfaces of the hopper body 71, and a stopper 93b that extends upward from the front end of the guide body 93a to prevent the hopper from being accidentally dropped off. The projection 93c projecting upward in the middle part in the front-rear direction of the guide body 93a and the front guide pin 74 and the rear guide pin 75 are engaged from above with the timing hopper 7 being locked to the apparatus body. L-shaped vertical restriction members 93d and 93e are provided.

(Procedure for attaching / detaching the timing hopper 7)
A procedure for attaching the timing hopper 7 to the apparatus main body will be described. Since the timing hopper 7 is attached from above the gantry, if the collective chute 6 or the like hinders work, it is necessary to remove it in advance. In addition, when an operator climbs up the gantry 1a and works from above, it becomes easier to hold the handle 76 so as to suspend the timing hopper 7 as will be described later. When the timing hopper 7 is attached, first, the timing hopper 7 is lowered between the guide members 93 arranged on the left and right sides, and the front guide pin 74 is connected to the stopper 93b as shown by a one-dot chain line in FIG. The notch groove 74a and the guide member 93 are engaged with each other by placing the guide body 93a through the vertical direction regulating member 93d (portion indicated by 9X).

  Next, as shown by a two-dot chain line in FIG. 6, the rear guide pin 75 is lowered onto the convex portion 93 c so that the notch groove 75 a and the convex portion 93 c are engaged, and the timing hopper 7 is moved to the guide member 93. Put on the top. As a result, the rear side of the timing hopper 7 is lifted and the height is secured, and a preparation posture for engaging the locking guides 731a and 732a with the locking pin 92a from above is taken. Finally, by pulling the handle 76 rearward and sliding the timing hopper 7 backward from the above state, the rear guide pin 75 slides down the rear slope from the convex portion 93c. Guided to the mounting position indicated by the solid line.

  Due to the movement trajectories of the front guide pin 74 and the rear guide pin 75 at this time, the locking guides 731a and 732a formed on the back surface of the timing hopper 7 are engaged with the locking pin 92a from diagonally forward and upward. Further, the front guide pin 74 enters below the vertical direction regulating member 93d by sliding backward, and the rear guide pin 75 falls below the vertical direction regulating member 93e by sliding down from the convex portion 93c. Thereby, the timing hopper 7 is also restricted from moving in the upward direction in addition to the downward direction and the front-rear direction. The timing hopper 7 is substantially aligned with the position restriction in the left-right direction by the engagement of the front-rear guide pins 74 and 75 and the guide member 93. Full play is prevented.

  In order to remove the timing hopper 7 from the apparatus main body, an operation reverse to the above may be performed. First, while pushing the handle 76 forward and sliding the front guide pin 74 forward, the rear guide pin 75 rides on the convex portion 93c from the rear slope, and the locking guides 731a and 732a are moved to the locking pin. Separate from 92a. At this time, it is necessary to pull the rear side of the timing hopper 7 upward. However, if the entire timing hopper 7 is rotated counterclockwise in FIG. Can be easily released. In particular, since the front guide pin 74 is provided in the vicinity of the center line of the weight balance in the front-rear direction of the timing hopper 7 as described above, the force required for lifting is small.

  Next, after pulling the handle 76 obliquely upward and tilting the timing hopper 7 forward about the front guide pin 74 as the center of rotation, the rear guide pin 75 is detached from the guide member 93, and then the front guide pin 74 is moved up and down. The removal is completed by further pulling the handle 76 upward while bringing the timing hopper 7 forward so as not to be caught by the regulating member 93d.

(Modification of the first embodiment)
In the first embodiment, the guide member 93 is formed with the vertical restriction members 93d and 93e for preventing the timing hopper 7 from moving upward. However, the hopper is generally heavy and the gate 72 is downward. It is only considered that the timing hopper 7 receives a force that lifts it upwards, after returning to the original closed position. Therefore, as shown in FIG. 7, the up-down direction regulating member may be eliminated. When the vertical regulating member is eliminated, the landing possible range 9X of the front guide pin 74 when the timing hopper 7 is placed on the guide member 93 is widened, so that the mounting workability is improved.
In the first embodiment, the guide members 93 are provided on both the left and right sides, but may be provided on only one of the left and right sides.

(Second embodiment of the present invention)
A combination weighing device according to a second embodiment of the present invention will be described with reference to FIGS. The second embodiment is different from the first embodiment only in that a guide member 95 (auxiliary guide member 96) and a handle 77 of the timing hopper 7 'are provided instead of the guide member 93 and the handle 76 in the first embodiment. For this reason, the same reference numerals are used for other parts, and detailed description thereof is omitted.

(Timing hopper 7 'and its attachment / detachment structure)
As shown in FIG. 9, the timing hopper 7 ′ mounted on the combination weighing device according to the second embodiment has a hopper body 71, a gate 72, and mounting members 731 and 732 having the same structure as the first embodiment. The front and rear guide pins 74 and 75 are provided, and only the handle 77 is different. The handle 77 is attached to the upper part of the front side surface of the hopper body 71 and is formed in a U shape extending in the left-right direction. That is, the handle 77 is provided at a position farthest away from the locking guide 73a with a hopper rotation center (front guide pin 74) sandwiched between the timing hopper 7 'described later and the work of attaching and detaching. . Therefore, by grasping the handle 77, the locking guides 731a and 732a can be moved up and down by changing the inclination of the timing hopper 7 'with a small force.

  Like the guide member 93 of the first embodiment, the guide member 95 is fixed to the apparatus main body. When the timing hopper 7 ′ is attached to the apparatus main body, the guide member 95 is sandwiched between the left and right sides in the left-right direction. It is provided at an opposing position. As shown in FIG. 8, the guide member 95 is a rail-shaped member formed in a substantially rectangular shape, and includes a guide body 95 a extending in the front-rear substantially horizontal direction along the left and right side surfaces of the hopper body 71, and a front end thereof And an introduction portion 95b continuously formed so as to incline downward from. There is a step H (the introduction portion 95b is higher) at the upper end surface of the connecting portion between the guide body 95a and the introduction portion 95b, and the introduction portion 95b plays the same role as the stopper 93b in the first embodiment. .

  A convex portion 95c having a predetermined width that protrudes upward from the upper end surface of the guide main body 95a is formed in the middle portion of the guide main body 95a in the front-rear direction. Above the guide member 95, an auxiliary guide body 96a extending in a substantially horizontal direction in the front-rear direction and opposed to the guide body 95a in the up-down direction, and continuously extending so as to incline downward from the front end thereof, obliquely above and below the introduction portion 95b. A substantially rectangular auxiliary guide member 96 comprising an auxiliary introduction portion 96b facing in the direction is fixed to the apparatus main body. The guide member 95 and the auxiliary guide member 96 form a guide pin guide passage 95X for allowing the front guide pin 74 and the rear guide pin 75 to pass between them. The auxiliary guide member 96 abuts on the upper surface side of the front and rear guide pins 74 and 75 in a state where the timing hopper 7 'is locked to the apparatus main body, and presses the timing hopper 7' so as not to move upward. Protruding vertical regulating members 96d and 96e are provided so as to protrude downward.

(Procedure for attaching and detaching timing hopper 7 ')
A procedure for attaching the timing hopper 7 'to the apparatus main body will be described. Note that the timing hopper 7 'is assumed to be installed from the lower side of the apparatus, and basically it is not necessary to remove the collective chute 6 or the like, but when the work is hindered by interference between parts or the like. It is necessary to remove in advance or shift the mounting position. When the timing hopper 7 'is attached to the apparatus main body, first, the rear guide pin 75 and the front guide pin 74 are inserted into the guide pin guide passage 95X in this order, as shown by a one-dot chain line in FIG. After the timing hopper 7 ′ is placed on the guide member 95, the timing hopper 7 ′ is further slid rearward until the rear guide pin 75 is dropped from the introduction portion 95 b onto the guide body 95 a below the step. .

  From this state, the timing hopper 7 'is slid until the rear guide pin 75 comes into contact with the front end of the convex portion 95c, and then the handle 77 is pulled downward, and the rear guide pin 75 is lifted around the front guide pin 74, By sliding the timing hopper 7 'backward while maintaining the position as it is, the front guide pin 74 is dropped onto the guide body 95a, while the rear guide pin 75 is projected, as shown by a two-dot chain line in FIG. It rides on the part 95c. As a result, the mounting members 731 and 732 on the back surface of the timing hopper 7 ′ are in a lifted state, and a preparation is made for the locking guides 731a and 732a to engage with the locking pins 92a from above. Finally, by pushing the handle 77 further rearward, the rear guide pin 75 slides down the rear slope from the convex portion 95c and is guided to the mounting position indicated by the solid line in FIG.

  With the movement of the front guide pin 74 and the rear guide pin 75 at this time, the locking guides 731a and 732a on the back surface of the timing hopper 7 are engaged with the locking pin 92a from diagonally forward and upward. Further, the front guide pin 74 enters the lower part of the up / down direction regulating member 96d by sliding backward, and the rear guide pin 75 is dropped below the up / down direction regulating member 96e by sliding down from the convex part 95c. . As a result, the timing hopper 7 is restricted to move in the upward direction in addition to the downward direction and the front-rear direction. The position of the timing hopper 7 is restricted in the left-right direction by the engagement of the front-rear guide pins 74 and 75 and the guide member 95. In addition, rattling is almost completely prevented.

  When the timing hopper 7 'is removed from the apparatus main body, the operation is performed in a direction substantially opposite to the above. First, the handle 77 is pulled downward, the rear guide pin 75 is lifted with the front guide pin 74 as the center of rotation, and the timing hopper 7 'is slid forward while maintaining the angle posture as it is. Move to the position indicated by the chain line. Next, while pushing the handle 77 upward, the front guide pin 74 rides on the introduction portion 95b and slides forward, then, this time, the handle 77 is pulled downward and slid forward, and the rear guide pin 75 Also ride on the introduction part 95b. Finally, the timing hopper 7 'is pulled out obliquely downward and detached from the guide pin guide passage 95X.

(Modification of the second embodiment)
In the second embodiment, the vertical guide members 96d and 96e for preventing the timing hopper 7 'from moving upward are formed in the auxiliary guide member 96. However, as described in the section of the first embodiment. Since it is unlikely that the timing hopper 7 ′ receives a force that lifts it upward, the vertical regulating member may be eliminated as shown in FIG. 10. When the up / down direction restricting member is eliminated, an operation for dodging the up / down direction restricting member 96d when the front guide pin 75 passes through the guide pin guide passage 95X is not required, and the mounting workability is improved.

  Further, the auxiliary guide member 96 may be eliminated. When the auxiliary guide member 96 is abolished, the work of inserting the front and rear guide pins into the narrow guide pin guide passage 95X is eliminated, and it is only necessary to place the guide pins on the guide member 95, so that the mounting workability is further improved. In the second embodiment, the handle 77 is attached to the front surface of the timing hopper 7 ′. However, as shown by the one-dot chain line in FIG. 9, the left and right side surfaces of the hopper body 71 (one is not visible behind the hopper). ) May be provided with a handle 78. When attaching the timing hopper 7 ', it is necessary to introduce the front and rear guide pins 74 and 75 into the left and right guide pin guide passages 95X at the same time, but by providing handles 78 on both sides of the hopper, the control at that time can be controlled. It becomes easy and mounting workability improves. Note that the guide member 95 (and the auxiliary guide member 96) are not necessarily provided on both the left and right sides, and may be set on either the left or right side.

DESCRIPTION OF SYMBOLS 1 Combination measuring device 2 Combination measuring device 7 Timing hopper 731a Locking guide 732a Locking guide 74 Front guide pin 75 Rear guide pin 76 Handle 92a Locking pin 93 Guide member 93c Protruding part 93d Vertical direction regulating member 93e Vertical direction regulating member 7 ′ Timing hopper 77 Handle 78 Handle 95 Guide member 95c Protruding portion 96 Auxiliary guide member 96d Vertical direction regulating member 96e Vertical direction regulating member

Claims (5)

The supplied articles are weighed by a plurality of weighing units, a combination calculation is performed using the weighed measured values, a hopper storing a combination of articles having a predetermined target weight is selected, and the selected hopper A combination weighing device that discharges an article inside the apparatus to a lower discharge port and discharges the article outside the apparatus by a timing hopper provided below the discharge port,
A locking pin provided in the apparatus main body for locking the timing hopper;
A locking guide provided on the timing hopper and engaged with the locking pin from above and horizontally;
Front guide pins and rear guide pins provided before and after the timing hopper;
A guide member for guiding the front guide pin and the rear guide pin;
With
The guide member has a convex portion that moves the rear guide pin upward and then moves downward as the rear guide pin moves back and forth, so that the locking guide is moved relative to the locking pin. The combination weighing device is engaged from above.   The said guide member is provided with the up-down direction control member which controls the motion of the up-down direction of the said front guide pin or a rear guide pin, when the said locking guide engages with the said locking pin. The combination weighing device according to 1.   The combination weighing device according to claim 1, wherein the timing hopper is provided with a handle on the locking guide side.   The combination weighing device according to claim 1 or 2, wherein the timing hopper is provided with a handle in front of the front guide pin.   3. The combination weighing apparatus according to claim 1, wherein the timing hopper is provided with handles on the left and right sides of the timing hopper.

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