JP2008127089A - Bag opening device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To cause cutter means to be easily pierced into a pack with no resistance by improving engagement means engaged with the wrapped body and to prevent some foreign substances such as cutoffs or the like from being merged into the stored content in the wrapped body. <P>SOLUTION: Engagement means 8 comprise engagement arms 14 arranged below the right and left supporting plates 3 in such a way that the arms can be turned in an upward or downward direction, and plate-like piercing tools 15 attached to the extremity end of each of the engagement arms 14, protruded upward above the supporting plates 3 at the time of upward turning operation of the engagement arms 14 to cause the plate-like piercing tools 15 to pierce into a pack 10 mounted on both supporting plates 3 and having a blade at one side edge. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a bag opening device that cuts and opens a packing body such as a paper bag and delivers the contents therein to a hopper or the like.

As this type of bag opening device, for example, as described in Patent Document 1, the bag opening device is placed on a support plate (receiving plate) of a pair of left and right packages that are pivotably mounted horizontally and downwardly. After inserting and pinning pins on the left and right sides of the bag-shaped package from below, the center of the package is cut with a lowering cutter, and both support plates are rotated downward to cut the package In some cases, the contents filled therein are discharged to the lower hopper.
JP 59-212231 A

  In the bag opening device described in the above patent document, a pin is pierced into the packing body in order to prevent the packing body from sliding off the support plate when both supporting plates are rotated downward. Moreover, since the pin has an elongated conical shape with an opening at the tip and gradually increasing in diameter from the tip to the base end, the penetration resistance at the time of piercing is large, breaking through the bag-shaped package. However, the pin is pierced.

  Therefore, as shown in FIG. 15, the penetrating portion of the pin P is broken and turned inside the packing body W, and foreign matter such as chips generated at that time is mixed into the contents of the packing body, resulting in a decrease in quality. However, it can be a sanitary problem, especially in the case of food.

  The present invention has been made in view of the above-mentioned problems, and by modifying the latching means for latching the package, it can be easily stabbed into the package without resistance, and foreign matters such as chips are contained in the contents. It is an object of the present invention to provide a bag opening device that can prevent mixing.

According to the present invention, the above problem is solved as follows.
(1) A pair of left and right packaging support plates that are horizontally opposed to each other and that can rotate downward about the outer end, and a gap between the opposing surfaces of the two support plates, and both supports A bag opening cutter for cutting the package placed on the plate, and a latching means for preventing the package from being cut off when the left and right support plates are rotated downward by latching the package. In a bag opening device comprising:
The latching means is provided below the left and right support plates so as to be pivotable in the vertical direction, and is attached to the tip of the latch arm, and the support plate when the latching arm is pivoted upward. And a plate-like piercing tool having a sharp tip and a blade on one side edge so as to pierce the packing body placed on both support plates.

(2) In the above item (1), a blade is also formed on the other side edge of the piercing tool.

(3) In the above (1) or (2), the cross-sectional shape of the blade is a wedge shape.

(4) In any one of the above items (1) to (3), the piercing tool is detachably attached to the distal end portion of the latching arm with a screw.

  According to the first aspect of the present invention, since the piercing tool has a plate shape with a sharp tip and a blade on one side edge, the piercing tool is pierced into the packing body as it is cut. As a result, the penetration resistance is reduced, the penetration part is not torn and the inside of the package is not turned up, and therefore the possibility of generation of foreign matter such as chips is extremely reduced. Mixing is prevented.

  According to invention of Claim 2, since the penetration resistance at the time of a piercing tool stabs into a package body becomes smaller, the possibility that foreign materials, such as a chip, will generate | occur | produce becomes still smaller.

  According to invention of Claim 3, while the penetration resistance of a stab tool further falls, the through-hole formed in a package body also becomes small.

  According to invention of Claim 4, since only a stab tool can be removed from a bag opening apparatus, the grinding | polishing or replacement | exchange operation | work etc. become easy.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic front view showing an embodiment of a bag opening device of the present invention. The bag opening device 1 is horizontally opposed to each other, and pivoting portions 2 on both outer ends are actuators such as a motor ( A pair of left and right support plates 3, 3 linked to each other (not shown) and turnable by approximately 90 degrees downward, and a gap 4 between opposite ends of both support plates 3, A flat bag opening cutter 6 that can be moved up and down, a hopper 7 provided below both support plates 3, and a pair of left and right provided between the upper end of the hopper 7 and the lower surfaces of both support plates 3. Hooking means 8 and 8 and a pair of left and right turning devices 9 and 9 for supporting the outer end portions of both the hanging means 8 and turning them upward are provided.

  On the left side of both support plates 3, a belt conveyor 11 is provided on the upper surface to transfer a packing body 10 such as a paper bag. Similarly, on the right side, the packing body 10 is placed at a fixed position on both support plates 3. Is provided with a stopper 12 for stopping at the air cylinder 13 and an air cylinder 13 for moving the stopper 12 forward and backward in the left-right direction.

  The left and right latching means 8 are symmetrical and have the same shape, and as shown in an enlarged view in FIG. 5, substantially half of the length direction is a straight base shaft portion 14a, and the other half is curved in an arc shape. It consists of a round bar-shaped latching arm 14 as an arc-shaped shaft portion 14b, and a plate-like piercing tool 15 fixed to the tip of the arc-shaped shaft portion 14b. An end portion of a base shaft portion 14a that is an attachment portion to the driving device 9 in the latch arm 14 is a large diameter shaft 14c. A circular hole 16 is formed in each of the base end portion and the intermediate portion of the large diameter shaft 14c. A long hole 17 facing the longitudinal direction is formed.

The piercing tool 15 is formed in a shape like a kitchen knife by, for example, stainless steel, and a base end portion 15a (see FIG. 7) having a rectangular cross section is enlarged as shown in FIG. After being fitted into the split groove 18 formed at the tip of 14b, it is fixed by welding.
A blade 15b having a double-edged structure having substantially the same curvature as the arcuate shaft portion 14b of the latching arm 14 is formed on one side edge portion of the piercing tool 15 excluding the base end portion 15a. Is a straight peak 15c.

The blade tip of the piercing tool 15 is sharpened in both the planar shape and the front shape by gradually reducing the plate thickness and width toward the tip (see FIGS. 5 and 6).
Further, the cross-sectional shape of the blade 15b is a sharp wedge shape as shown in an enlarged manner in FIGS.

  A pair of left and right rotating devices 9 shown in FIG. 1 includes a first air cylinder 20 facing in the left-right direction for positioning a support 19 for supporting a latching arm 14 in the latching means 8 in a fixed position, and a latching arm. And a second air cylinder 21 that faces in the up-down direction for rotating 14 upward.

  The left and right latching means 8 has the base shaft portion 14a of the latching arm 14 turned sideways, and the arcuate shaft portion 14b and the piercing tool 15 face upward below the support plate 3, so It attaches to the support body 19 of the moving device 9 symmetrically as follows.

  That is, the base end portion of the enlarged shaft 14c of the base shaft portion 14a of the latch arm 14 is vertically fixed to the support piece 22 standing on the support body 19 by the pin 23 penetrating the circular hole 16 provided in the portion. And pivoting the intermediate part of the enlarged diameter shaft 14c on the upper end of the second air cylinder 21 with a pin 23 penetrating the long hole 17 provided in the intermediate part. The latching means 8 is attached to the left and right support bodies 19 so as to be rotatable up and down.

Next, a procedure for disassembling the package 10 by the bag opening device 1 of the above embodiment will be described.
First, as shown in FIG. 1, the first air cylinder 20 of the left and right rotating device 9 is operated to position the left and right positions of the support 19 and the latching means 8 attached thereto at predetermined positions. After that, as shown by a two-dot chain line, the package 10 is moved by the operation of the belt conveyor 11 until it comes into contact with the stopper 12 and is transferred to a fixed position on the left and right support plates 3.

  Next, as shown in FIG. 2, after the stopper 12 is retracted from the package body 10, the second air cylinder 21 in the left and right rotating device 9 is operated to rotate both the latch arms 14 upward. Then, the upper end portions of both piercing tools 15 pierce the lower surfaces of the left and right side portions of the packaging body 10 through elongated holes (not shown) formed in the left and right support plates 3 facing the left and right directions.

At this time, the piercing tool 15 has a wedge-shaped blade 15b having an arcuate shape on one side edge and a sharp knife-like tip, so that the package body as shown in FIG. It pierces easily without resistance while cutting 10, and only a through hole 24 having substantially the same shape as the cross-sectional shape of the piercing tool 15 is formed in the penetrating portion.
Therefore, unlike the conventional case, the through portion does not turn up inside the package 10, and foreign matter such as chips generated at that time is prevented from entering the contents.

  Thus, after both the piercing tools 15 are pierced on the lower surfaces of both side portions of the packaging body 10, the bag opening cutter 6 is lowered by the operation of the air cylinder 5 as shown in FIG. Cut the part.

  Next, as shown in FIG. 4, after raising the bag opening cutter 6, the left and right support plates 3 are rotated downward to about 90 degrees, and the cut end of the packing body 10 is directed downward, and the contents thereof To the hopper 7. At this time, the two piercing tools 15 also pierce and penetrate the upper surface of the packaging body 10 and the latching arm 14 is inserted into the through-hole, whereby the left and right packaging bodies 10a and 10a are supported by the support plate. 3 is prevented from sliding down.

  The empty packing bodies 10a and 10a after the contents are dispensed rotate the left and right support plates 3 to the horizontal initial position, and then rotate both the latching arms 14 downward to insert the stab 15 Is extracted from the package 10a and then moved to a predetermined position by a discharge means (not shown).

As described above, in the bag opening device 1 of the above-described embodiment, the front end portion of the latching means 8 that prevents the package 10 from sliding off the support plate 3 has the wedge-shaped cross-section blade 15b and the front end portion. Since the piercing tool 15 is sharp, it is pierced into the packing body 10 while cutting it, and the penetration resistance becomes extremely small.
As a result, the penetrating portion of the piercing tool 15 in the package 10 is torn and turned inward, and foreign matters such as chips generated at that time are not mixed into the contents.

  In addition, when the sharpness is deteriorated, the hooking arm 14 can be removed, the piercing tool 15 can be polished, and the sharpness can be recovered.

12-14 shows the modification of a stab tool.
Although the piercing tool 15 of the said embodiment was set as the structure which has the blade 15b only in one side edge part of a length direction, the piercing tool 25 of this modification has the blades 25a and 25a in a both-sides edge part. It has a double-edged structure. If it does in this way, since the packing body 10 will be cut by the blade 25a of a both-ends edge, and penetration resistance will become still smaller, the possibility that chip etc. generate will become very small.

In the above embodiment, the piercing tool 15 is fixed to the distal end portion of the latching arm 14 by welding, but may be detachably fixed with a screw 26 as shown in FIG. If it does in this way, since only the piercing tools 15 and 25 can be removed from the bag opening apparatus 1, the grinding | polishing and replacement | exchange operation | work etc. become easy and work efficiency improves.
Moreover, although the blades 15b and 25a of the said embodiment are made into the double blade structure, it is good also as a single blade structure.

It is a schematic front view of one Embodiment of the bag opening apparatus of this invention. Similarly, it is a schematic front view of the process of piercing the packing body with the piercing tool. Similarly, it is a schematic front view of the process of cutting a package with a bag opening cutter. Similarly, it is a schematic front view of the process of turning both support plates downward and paying out the contents of the package. It is an enlarged front view of a latching means. FIG. 6 is an enlarged view taken along line VI-VI in FIG. 5. It is the VII-VII line enlarged vertical end view of FIG. Similarly, it is a VIII-VIII line enlarged longitudinal end view. Similarly, it is an IX-IX line enlarged vertical end view. Similarly, it is an X-X line enlarged vertical end view. It is a partially cutaway perspective view of the penetration tool penetration part in a packing object. It is an enlarged front view which shows the modification of a stab tool. FIG. 13 is an enlarged longitudinal sectional end view taken along line XIII-XIII in FIG. 12. Similarly, it is an XIV-XIV line enlarged vertical end view. It is a partial notch perspective view of the package body of the penetration part by the conventional pin.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bag opening apparatus 2 Pivoting part 3 Support plate 4 Crevice 5 Air cylinder 6 Bag opening cutter 7 Hopper 8 Latching means 9 Rotating device 10 Packing body 10a Cut packing body 11 Belt conveyor 12 Stopper 13 Air cylinder 14 Latching arm 14a Base shaft portion 14b Arc-shaped shaft portion 14c Diameter expansion shaft 15 Pricking tool 15a Base end portion 15b Blade 15c Peak 16 Circular hole 17 Long hole 18 Split groove 19 Support body 20 First air cylinder 21 Second air cylinder 22 Support piece 23 pin 24 through hole 25 piercing tool 25a blade 26 screw

Claims (4)

A pair of left and right packaging support plates that are horizontally opposed to each other and that can be rotated downward about the outer end, and a gap between the opposing surfaces of the two support plates enter the both support plates. A bag opening cutter that cuts the placed packing body, and a hooking means for preventing the sliding of the cut packing body when the left and right support plates are rotated downward by hooking the packing body. In the bag opening device,
The latching means is provided below the left and right support plates so as to be pivotable in the vertical direction, and is attached to the tip of the latch arm, and the support plate when the latching arm is pivoted upward. And a plate-like piercing tool having a sharp tip and a blade on one side edge so as to pierce the packing body placed on both support plates by protruding upward. A bag opening device.   The bag opening device according to claim 1, wherein a blade is also formed on the other side edge of the piercing device.   The bag opening device according to claim 1 or 2, wherein a cross-sectional shape of the blade is a wedge shape.   The bag opening device according to any one of claims 1 to 3, wherein the piercing tool is detachably attached to the tip end portion of the latching arm with a screw.

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