JPH0335220B2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention automatically and quickly switches between multiple types of single bags when packaging multiple types of rice, etc. in single bags corresponding to each type of rice, etc. It belongs to the field of automatic switching equipment for multiple types of single bag cassettes.

(Prior art) For example, when packaging rice in single bags, there are many varieties of rice, so prepare many types of single bags with brands etc. printed on them that correspond to the varieties, and use the Single bags must be selected accordingly.

Conventionally, when storing a large number of single bags in a cassette, it was necessary to manually search for a cassette suitable for the type of rice to be packaged, and also to switch to a new cassette. Particularly in the case of packaging a wide variety of products in small quantities, cassettes must be changed frequently, which requires a great deal of effort and wastes a lot of time.

(Problems to be Solved by the Invention) The present invention automates the switching of cassettes in a bag feeding device that feeds bags by storing them in a single bag cassette, thereby completely eliminating the labor and time. The purpose is to shorten the time and improve packaging efficiency.

(Means for Solving the Problem) A plurality of single-bag cassette support shelves that support a plurality of single-bag cassettes that separately house different types of single-bag cassettes in a manner that they can be taken in and taken out are arranged at predetermined intervals in the vertical direction. , the lifting frame supported by the machine frame so that it can be raised and lowered, and the single bag cassette support shelf that supports the single bag cassette that needs to be pushed out are raised and lowered by a preset amount to move the single bag cassette to the pushing position. a drive device with a control mechanism; a single bag cassette pushing device that pushes out the single bag cassette from the single bag cassette support shelf that has been moved to the pushing position;
A single-bag cassette support for supporting the single-bag cassette pushed out by the single-bag cassette push-out device is provided to constitute a multi-type single-bag cassette automatic switching device to automate the switching of single-bag cassettes.

(Function) Single bag cassettes are each supported on a large number of single bag cassette support shelves attached to the elevating frame, and the single bags stored in each single bag cassette are different from each other, or the number of single bags is different from each other. Different for each group. A predetermined single bag is stored in a single bag cassette supported by a specific single bag cassette support shelf.

When the type of single bag to be supplied is changed due to a change in the type of the object to be packaged, a drive device with a control mechanism is operated to push out the single bag cassette containing the desired single bag. The lifting frame is raised and lowered by a set amount so that it is located at the height position. Thereafter, the single bag cassette pushing device is operated to push out the single bag cassette containing the desired single bag from the single bag cassette support shelf and transfer it to the single bag cassette support, thereby switching the single bag cassette. It is done.

(Embodiment) An embodiment of the present invention is shown in FIGS. 1 to 3.

Two pairs of columns 2 are installed on the machine frame 1, and each column 2
A roller guide member 3 is provided perpendicularly on the opposing surface of each of the rollers. A pair of guide rollers 5 are attached to the upper and lower ends of the side plates 4 of the lifting frame A, respectively, and the pair of guide rollers 5 sandwich the roller guide member 3, so that the lifting frame A is supported by the machine frame 1 so as to be able to move up and down.

As shown in FIGS. 2 and 3, single-bag cassette support shelves 8 for supporting single-bag cassettes 7 are attached to the front plate 6 of the lifting frame A at regular intervals in the vertical direction. ing. As shown in FIG. 5, this single bag cassette support shelf 8 has a guide plate 9 provided at only one opposing end of a rectangular plate.

In front of the support column 2 in the machine frame 1, there is a single bag cassette pushing device B for pushing out the single bag cassette 7 supported on the single bag cassette support shelf 8.
is provided. This single bag cassette extrusion device B has a spline shaft 10 horizontally provided in front of the support column 2 of the machine frame 1 and parallel to the front plate 6 of the lifting frame A, and a sliding body 11 slides on the spline shaft 10. A push-out plate 12 is attached to the sliding body 11 so as to be movable but not rotatable.
This configuration is installed horizontally perpendicular to 0. This push-out plate 12 is provided at the push-out height position of the single-bag cassette 7. In FIG. 1, a rod 15 of a cylinder 14 is pivotally connected to the center of a first link 13 whose lower end is pivotally connected, and a rod 15 of a cylinder 14 is pivotally connected to the tip of a second link 16 to which a base end is pivotally connected. The distal end of the first link 13 is pivotally connected, and as the rod 15 of the cylinder 14 moves in and out, the sliding body 11 reciprocates on the spline shaft 10 via the first and second links 13 and 16. There is.

Further, a nut 18 is attached to the upper plate 17 of the lifting frame A, and a threaded rod C is supported on the beam 19 of the machine frame 1 via a bearing 20.
are screwed together.

This screw rod C is configured to rotate by a number of rotations set by a drive device D with a screw rod rotation speed control mechanism and then stop. This drive device D is composed of a motor M with a brake and a screw rod rotation speed detection mechanism E. The screw rod rotation speed detection mechanism E has a detection plate 21 coaxially attached to the screw rod C, and a plurality of grooves (not shown) are provided in the detection plate 21 equally divided in the circumferential direction. The pulse is read by detecting the number of grooves formed by the proximity switch 22.

When the proximity switch 22 detects a preset number of pulses, this signal is converted into an electrical signal and input to the brake-equipped motor M, which activates the brake and causes the motor M to suddenly stop. There is. Therefore, it becomes possible to raise and lower the elevating frame A by a preset amount. In addition, in FIG. 1, 23 indicates a gear for transmitting the rotation of the motor M to the screw rod C.

Furthermore, between the single bag cassette support shelves 8 attached to each lifting frame A, a set of single bag cassette supports 24 having an L-shaped cross section are provided parallel to the spline shaft 10 at a predetermined interval. ing. The upper end of this single bag cassette support 24 is attached to a rotating rod 25, and as shown in FIG. 4, by rotating the rotating rod 25 outward, the supported single bag cassette 7 can be dropped. It is configured to be removed at the very least.

In FIG. 3, a pair of nipper rollers 26 are provided in front of the single bag cassette support 24 to transport the single bag S taken out from the single bag cassette 7 forward. A single bag standby plate 27 is provided for aligning the leading ends of the transported single bags S and keeping them on standby for one sheet. Above the tip of the single bag standby plate 27 is a unit for suctioning the vicinity of the opening of the single bag S and supplying the single bag 23 between a set of single bag holders 29 below the hopper 28. A bag supply lever 30 is provided.
In FIG. 4, reference numeral 31 indicates a conveyor for discharging the single bag cassette 7 that has fallen from the single bag cassette support 24.

Next, the operation of the bag feeding device of the above embodiment will be explained.

Single bag cassettes 7 are supported on a plurality of single bag cassette support shelves 8 attached to the lifting frame A, and the single bags S stored in each single bag cassette 7 are different from each other or different from each other. differs for several groups. A predetermined type of single bag S is accommodated in a single bag cassette 7 supported by a specific single bag cassette support shelf 8.

Now, for ease of explanation, the single bags accommodated in the single bag cassettes 7 supported by the respective single bag cassette support shelves 8 are given the symbols S ₁ , S ₂ , S ₃ , and S ₄ (the first
figure).

Then, in a state where one of the elevating frames A is located at the ascending end as shown by the _two -dot chain line in FIG. When a signal to that effect is input to the screw rod rotation speed control mechanism E, the screw rod C is rotated by starting the motor M, the elevating frame A is lowered, and the screw rod rotation speed detection mechanism E is set as above. When a specific number of pulses corresponding to the signal are detected, the motor M
The brake is activated, and the lifting frame A stops with the uppermost single bag cassette 7 containing the single bags _S1 located at the push-out height position, as shown by the solid line in the figure.

Next, actuate the cylinder 14 to release the rod 1.
5, the push-out plate 12 that is in contact with the side surface of the single-bag cassette 7 supported on the single-bag cassette support shelf 8 is moved laterally, and the single-bag cassette 7 is pushed out from the single-bag cassette support shelf 8 into a set of single-bag cassettes. The bag is transferred to the single bag cassette support 24. In this state, the single bags S stored in the single bag cassette are sucked out one by one by a suction device (not shown) and transferred to the single bag standby plate 27 by a set of nip rollers 26.
By the action of the single bag supply lever 30, the single bag S on the standby plate 27 is fed between a set of single gripping tools 29.

Here, if the type of the item to be packaged changes and you want to switch to the single bag cassette ₇ that accommodates the corresponding single bag S3, first move the single bag cassette support 24 to the single bag cassette 7.
is rotated outward to drop the single bag cassette 7 containing the single bag _S1 (see Fig. 4), and the conveyor 31
It is discharged to the outside by the action of Next, in the same manner as described above, when a signal indicating that the single bag cassette 7 containing the single bag S ₃ is to be removed is inputted to the screw rod rotation speed control mechanism, the single bag S ₃ is stored in the same manner as described above. The elevating frame A stops with the single bag cassette 7 in the uppermost stage positioned at the push-out height position. In this way, the single bag cassette 7 containing the desired single bag can be freely and quickly taken out.

Further, when the last single bag S of the single bag cassette 7 is taken out, a phototube device (not shown) detects this state, and a set of single bag cassette supports 24 are rotated outward based on the signal. The single bag cassette 7 falls downward, and then the next single bag cassette 7 that is waiting in advance is pushed out to form a set of single bag cassettes 24.
Supported by In this way, a series of operations are automated.

In particular, in this embodiment, a set of single bag cassette supports 2 provided at the push-out height position of the single bag cassette 7 are used.
Since the elevating frame body A is arranged on both sides of the single bag cassette 4, there is an advantage that a large number of single bag cassettes or many kinds of single bag cassettes can be prepared. The configuration may be such that the elevating frame body A is disposed only on the side.

(Effects) As described above, according to the present invention, in a bag feeding device that stores single bags in a cassette and feeds the bags, the lifting frame body is raised and lowered by a preset amount by the drive device with a control mechanism to achieve the desired purpose. The single bag cassette containing the desired single bag is pushed out and positioned at a height position, and then the single bag cassette containing the desired single bag is pushed out by the single bag cassette pushing device and supported by the single bag cassette support. Therefore, it is possible to automate the switching of single bag cassettes, and the labor required for switching between single bag cassettes can be completely eliminated, and the time required for switching between single bag cassettes can be significantly shortened. This is particularly effective in packaging small quantities of a wide variety of products, such as packaging for rice that includes a wide variety of products.

[Brief explanation of drawings]

FIG. 1 is a front view of the bag feeding device according to the present invention, FIG. 2 is a plan view, FIG. 3 is a side view, and FIG. FIG. 5, a side view showing the positional relationship, is a perspective view of the single bag cassette support shelf 8. (Explanation of symbols of main parts) A: Elevating frame body,
B: Single bag cassette extrusion device, C: Screw rod,
D: Drive device with screw rod rotation speed control mechanism, M: Motor with brake, S: Single bag, 1: Machine frame, 7: Single bag cassette, 8: Single bag cassette support shelf, 18: Nut, 24: Single bag Bag cassette support.

Claims (1)

[Scope of Claims] A plurality of single-bag cassette support shelves each supporting a plurality of single-bag cassettes storing different types of single-bag cassettes in a manner that allows them to be loaded and unloaded are arranged at predetermined intervals in the vertical direction, Equipped with a control mechanism that moves the single bag cassette to the pushing position by raising and lowering the lifting frame supported by the frame so that it can be raised and lowered, and the single bag cassette support shelf that supports the single bag cassette that needs to be pushed out by a preset amount. a driving device, a single bag cassette pushing device that pushes out the single bag cassette from the single bag cassette support shelf that has been moved to the pushing position, and a single bag cassette support that supports the single bag cassette pushed out by the single bag cassette pushing device. An automatic switching device for multi-species single bag cassettes, characterized in that it is equipped with a tool.