JPS6112323Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to an improved structure of a bag feeding device that suctions, takes out and supplies stacked flexible bags one by one.

[Conventional technology]

In general, this type of bag feeding device uses a reciprocating rotating arm to stack flat packaging materials such as packaging bags and wrapping paper on a feed table that can be raised and lowered, as shown in Japanese Patent Publication No. 52-11822. A device is known in which the suction cup is attached to the suction cup and the device is moved to a position almost perpendicular to the supply position. When the second suction cup is tilted, the second suction cup is stopped on the flat packaging material at an angle of attack that does not allow it to directly adsorb the material, and a first suction cup is installed in front of the suction cup to turn and change the angle generally in the vertical direction. , the first
The front part of the flat packaging material is suctioned by a suction cup, the front part of the flat packaging material is lifted up until it touches a second suction cup, and after the suction cup is transferred to the second suction cup, the swinging arm is rotated to a substantially horizontal angle. The configuration allows for accurate separation of packaging materials and allows for high feed rates.

Another method is to provide only one suction mechanism in order to simplify the components, and after sucking the bag with the suction cup of the suction mechanism, the bag is supplied by rotating operation. be.

[Problem that the invention attempts to solve]

However, in each of the above-mentioned conventional technologies, since the swing operation is performed by sucking one end of the bag on the opening side,
As a result of the rotation, the bag opening surface on the other side of the bag opening that is not being sucked receives air resistance, and the bag opening surface on the other side separates from the bag opening surface on the other side of the bag opening that is being sucked. As a result, the bag may be fed with the bag mouth open, resulting in the clamping member clamping the bag at a different position from the position where it would normally be supplied with the bag mouth closed. As a result, the suction positions may become uneven, and the bag opening may not be properly suctioned and held.

This invention replaces the conventionally known bag feeding device.
This was done with the aim of improving these drawbacks.

[Means for solving the problem] This invention consists of a vertically movable magazine that can store bags stacked up and down in multiple layers, and a vertically movable magazine that can store bags stacked in multiple layers. A supplying member that has a suction plate that suctions the bag opening surface, and is capable of reciprocating rotation to horizontally take out and supply the bag opening of the bag attracted by the suction plate; a pair of clamping members that clamp and support both ends of the bag opening of the bag; This bag feeding device includes a bag guide plate that can contact and guide the bag opening surface on the other side of the bag opening that is not open, and solves the problems of the prior art described above.

〔Example〕

A preferred embodiment of this invention will be described below with reference to the drawings.

In this embodiment, a bag supply structure applied to a bagging apparatus for Enoki mushrooms will be explained as an example.

A supply member 4 which has a suction plate 2 at its tip end that suctions the bag opening surface which is one side of the bag opening of the bag 1, and is capable of reciprocating rotation to feed the bag 1 attracted by the suction plate 2. A pair of clamping members 3 are formed to clamp and support both ends of the bag opening of the bag 1 supplied by the supplying member 4, and are disposed close to the clamping members 3. A bag guide plate 5 is attached to the machine stand 6, which is capable of contacting and guiding the other side of the bag opening surface which is not attracted by the bag opening, substantially along the supply path of the bag 1 by the supplying member 4.

In this case, the pair of clamping members 3 that clamp and support the bag opening of the bag 1 have a distal end surface of one clamping piece 3a, and a clamping claw that operates to open and close with the distal end surface of this clamping piece 3a. The clamping claw part 3b is rotatably provided around a fulcrum pin 7 provided on the clamping piece 3a side, and the end of the clamping spring 8 is connected to the clamping claw part 3.
b and the clamping piece 3a, so that the tip surface of the clamping piece 3a and the clamping claw part 3b can clamp the bag 1 and support it hanging down by the spring pressure of the clamping spring 8. It is configured to be held in pressure contact with the

At this time, when the gap between the clamping piece 3a and the clamping claw part 3b is released against the clamping spring 8, both corners of the bag opening of the bag 1 are supplied through the clamping gap a. It's becoming possible.

Next, the supply member 4 that supplies the bag 1 to the clamping gap a of the clamping member 3 will be explained.

A magazine 9 for storing bags 1 stacked vertically and in multiple layers above the machine base 6 is connected to a magazine vertical cylinder 1.
0, and is prevented from rotating by a guide rod 11, and is moved forward and backward by a bag supply cylinder 14 onto a supply table 13, which is located above this magazine 9 and horizontally provided by a support column 12. The rack 15 is fitted into a rack guide 16, and a pinion shaft 19 is horizontally installed above the rack guide 16, which is supported by a bearing 17 and has a fixed pinion 18 that meshes with the rack 15. The base of the member 4 is fixed, a suction plate 2 connected to a vacuum pump pipe is attached to the tip of the supply member 4, and a regulating block 20 has a lower surface on the same level as the lower surface of the suction plate 2 below the supply table 13. A support frame 21 is provided on the front upper surface of the supply table 13, and a release plate 24 is connected to the support frame 21 and can move forward and backward in a non-rotating state by a guide shaft 23 to the cylinder rod of the clamp release cylinder 22. A pair of hooking claws 3b are provided on both left and right sides of the release plate 24.
A release piece 26 is attached to each of the release pieces 26 to maintain the clamping gap a between the clamping piece 3a and the clamping claw part 3b by pressing a pressure roller 25 provided at the end of the clamping claw part 3b and rotating the clamping claw part 3b in the horizontal direction. are doing.

In the above configuration, the operation of this embodiment will be explained.

When the bags 1 are stacked and stored in multiple layers in the magazine 9 and the operating switch etc. is turned on, the magazine 9 is raised by the magazine up/down cylinder 10 until it comes into contact with the lower surface of the suction plate 2 and the regulating block 20, and the suction plate 2 attracts the bag opening, and after the bag 1 is attracted, the magazine 9 descends (the state shown in FIG. 1).

Then, the bag supply cylinder 14 is actuated to move the rack 15 forward, the pinion 18 meshing with the rack 15 rotates, the supply member 4 rotates clockwise via the pinion shaft 19, and the suction plate 2 The bag 1 that has been suctioned is transferred to the clamping gap a of the suction member 3.

At this time, when the bag opening part is inserted into the clamping gap a, the bag guide plate 5 comes into contact with the bag opening surface on the opposite side to the one bag opening surface that is attracted by the suction plate 2 of the bag opening part. Introduce and guide the bag opening to the clamping gap a.

When the bag mouth part is inserted and supplied into the clamping gap a, the release piece 26 is moved back by the clamping release cylinder 22, the clamping claw part 3b is activated, and the clamping part 3a and the clamping claw part 3b are separated. Both ends of the bag 1 on the opening side are clamped and supported hanging down.

Then, the suction action of the suction plate 2 stops, and then the bag supply cylinder 14 retreats, and the supply member 4 rotates counterclockwise and returns to its original position.

By repeating this operation, the bags 1 are sequentially fed into the clamping gap a between the clamping piece 3a and the clamping claw part 3b.

It is preferable to attach a material with a smooth surface, such as Teflon tape, to the surface of the bag guide plate 5 that comes into contact with the bag opening.

Therefore, when the supply member 4 rotates to insert and feed the bag opening to the clamping gap a of the clamping member 3, the bag opening can be smoothly moved to the clamping member 3 side by the bag guide plate 5. will be guided to.

In other words, in this type of bag feeding device, the suction plate 2 does not suction the bag to the edge of the bag opening, but the bag is usually suctioned leaving only the portion to be clamped by the clamping member 3. This adsorbed remaining portion is easily bent due to air resistance due to the rotating operation of the supply member 4, and generally only one side of the bag mouth surface of the bag 1 is adsorbed by the suction plate 2. Therefore, the bag guide plate 5 can suppress the disadvantage that the bag opening surface on the opposite side tends to come loose and the bag opening is also easily fed in an open state due to air resistance. It becomes possible to feed the bag mouth part up to the clamping part 3.

In addition, since the bag guide plate 5 is simply provided close to the clamping member 3, it is extremely easy to manufacture and is suitable for mass production and can be manufactured at low cost.

[Effect of idea]

This invention has a vertically movable magazine that can stack and store bags in multiple layers, and a suction plate located at the top of the magazine that sucks the bag opening surface on one side of the bag opening. , a supply member capable of reciprocating rotation to horizontally take out and supply the bag opening of the bag attracted by the suction plate, and a clamping support for both ends of the bag opening of the bag supplied by this supply member. a pair of clamping members, and a bag opening on the other side of the bag, which is disposed close to the clamping members and is not suctioned by the suction plate along the bag supply path by the supplying member. By comprising a bag guide plate whose surface can be guided in contact with the bag guide plate, there is an effect that the sucked bag can be stably supplied to the clamping member by the bag guide plate.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is an overall side view, FIG. 2 is a plan view of the main part, and FIG. 3 is a partial side view of the main part. 1... Bag, 2... Adsorption plate, 3a... Clamping piece, 3
b... Clipping claw portion, 3... Clipping member, 4... Supply member, 5... Bag guide plate, 9... Magazine.

Claims (1)

[Scope of utility model registration request] It has a vertically movable magazine that can store bags stacked up and down in multiple layers, and a suction plate that suctions one side of the bag mouth surface of the bag located at the top of the magazine. A supply member capable of reciprocating rotation to horizontally take out and supply the bag opening of the bag attracted by the plate, and a pair of clamping and supporting ends of the bag opening of the bag supplied by the supplying member. A clamping member and a bag opening surface on the other side of a bag opening disposed close to the clamping member and which is not suctioned by the suction plate substantially along the bag supply path by the supplying member. A bag feeding device comprising a bag guide plate that can be guided.