JPS624035A - Throttle device for bag in bagging packaging machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention C: Industrial Field of Application The present invention is applicable to bags that are mainly installed in bagging machines for products that are difficult to package, such as potatoes and onions, in which the amount of packaging and the packaging condition are constant. Regarding the diaphragm device.

[Conventional technology]

The bag filling and packaging machine has a structure in which a product is placed in a bag, transferred to an opening device by a conveyor, and the bag is opened at a predetermined position.

When using such a bagging and packaging machine to package relatively large products such as potatoes and onions, as well as products with different individual shapes and weights, it goes without saying that
Since there is a difference in the amount of packaging, the opening of the bag is done at a high position with plenty of time to spare.

[Problem to be solved]

However, with the above conventional packaging method, products such as potatoes roll freely within the bag, causing them to collide with each other and rub against each other, causing the bags to become sticky and easily crumble, as well as being unstable in loading. I am dissatisfied.

[Means for solving problems]

The present invention has a rotary shaft C: a turntable attached thereto, an intermittent drive mechanism for intermittently rotating the turntable, and a diaphragm plate attached to the turntable, which has a bag locking groove; These seven aperture plate stands are arranged above the carabine and have a gripping mechanism for grasping the opening of the bag that is locked in the locking groove of the aperture plate, and a gripping mechanism that moves the gripping machine m up and down relative to the aperture plate. By providing this mechanism, the above-mentioned conventional problems can be solved.

[Effect]

The bag containing the product is placed on the conveyor and approaches the turntable, and when the turntable stops, the mouth part is inserted into the locking groove of the squeeze plate, and the tip is inserted upward from the locking groove. The part is gripped by the gripping mechanism while it is being lowered.

After the above operations are completed, the l-turn table is rotated by a predetermined angle by the action of the intermittent drive mechanism, and the bag is moved to the part of the well-known mouth closure device. At this time, the up-and-down mechanism is activated to raise the gripping mechanism, so that the opening of the sagging bag is pulled upward, and the bag is squeezed until the free transfer of the product is prevented. In this way, the bag that is fed and stopped is immediately closed by the mouth closing device without loosening.

After the bag has been closed, the opening is released from the grip by the gripping mechanism C, and the bag is taken out from the locking groove of the aperture plate.

Embodiment] Fig. 1 shows the overall structure of the bag squeezing device according to the present invention. First, the outline will be explained. (A rotating shaft 3 that can be rotated twice is pivoted vertically. The lower part of this rotating shaft 3 is located above the conveyor 4.
- A turntable 5 is fixed horizontally, and the turntable 5 is provided with four aperture plates 6 protruding outward at equal intervals, and each of the aperture plates 6 of the turntable 5 is The part (- indicates a gripping mechanism 8 that is moved up and down by the up-and-down mechanism 7C. In FIG. Hereinafter, the structure of each of the above-mentioned mechanisms, etc., in which n devices 9 are provided will be described in detail with reference to the drawings.

The intermittent drive mechanism 2 is! ! As shown in FIG. 2, the rotary shaft 3 (coupled gear 1
2 is meshed with a sector gear 14 that rotates T about the center shaft 13, and the cylinder 15 (the sector gear 14 based on the second
Only the rotation in the clockwise direction in this figure is transmitted to the rotating shaft 3 via the gear 12 and the ratchet mechanism 11, and the sector gear 1
During the counterclockwise return rotation of step 4, the ratchet mechanism 11
The n1 rotating shaft 3, whose rotational transmission is cut off, is prevented from rotating. , 16 are large gears fixed to the teeth JiE12, and f'Ll- is a large gear fixed to the arm 18 which rotates around the shaft 1'l, and the braking gear 19 is engaged with the gear n.
ing. And push this to arm 18, and large gear 1
6 is attached with a cylinder 21 that engages the brake gear 19, and a tension spring 22 that pulls the arm 18i to easily separate the brake gear 19 from the large gear 16.

The gripping mechanism 8 grips the opening 23a of the bag 23, and as shown in FIGS. 26
The main body is a movable blade 27 which is attached to the movable blade 27 and is rotatable between the fixed blades 25.25.
The mouth part 23a of 3 is held down by movable blades 27 and gripped.

The fixed blade 25 is fixed with a screw 31 to the tip of a horizontal shaft 28 (29) installed on the turntable 5 (29), which is rotatably supported vertically. A locking groove 23C formed in the aperture plate 6 with the notch groove 24 aligned with the movable blade 27 The shaft 26 fixed to
A lever 35 with a cam follower 34 is secured with a screw 36, and a shaft 39 is secured with a fan-shaped gear 37 with a key 38.
At the same time, the rotating plate 29 (supported on two axes).

The fan-shaped gear 37 is meshed with the pinion 41 of the shaft 26, and a tension spring 44 is stretched between the bolt 42 attached to the lever 35 and the bolt 43 of the rotating plate 2-9. , the movable blade 27 is a tension spring 44
The force is applied to the bolt 42, the bar 35, the shaft 39, and the sector gear 3.
7. The pinion 41 is received via the shaft 26, and in the normal state rotates between the fixed blades 25 and 25 to continue gripping the opening 23a of the bag 230.

Further, on the rotating surface of the cam follower 34 centered on the rotating shaft 3, there is a movement ρ- in the direction of moving the cam follower 341 away from the rotating shaft 3 against the elasticity of the tension spring 44.
f, the opening cam 45 that allows the movable blade 27 to be pulled out from between the fixed blades and the window command book 25.25 as shown by the two-dot chain line in FIG. 1 cylinder 46
The opening/closing cam 47 is moved in the radial direction of the rotating shaft 3 to control the position of the cam follower 34 and open/close the movable vane 27 at any time. 27 firmly into the fixed blade 25.25, and then open the opening 23a of the bag 23.
The vertical mechanism 7, in which the gripping cam 48 for gripping the lkL holder is disposed, is used to raise and lower the gripping mechanism 8, as described above, and is shown in FIGS. 3 and 7. This vertical mechanism 7 consists of a traction block 5 attached to the mounting shaft 49C of the rotating plate 29, and a support arm 52g fixed to the rotation shaft 3 attached to the upper and lower eyelids. and the above-mentioned traction block 5
Side face of 1 +: Upper and lower members 55 are provided by inserting pins 54 into elongated holes 53, and the frame 1 is arranged around the rotating shaft 3. 7 langes 57C: Mainly includes a vertical cam 59 that moves the vertical member 55 up and down via a cam follower 58 attached to the upper end of the vertical member 55. A guide rod 62 consisting of a screwed nut 64f and a bolt serving as a stopper is inserted vertically into the flange 61 and the pin 54, and a buffer spring 63 is inserted into the guide rod 62 with two turns ηhQ. are provided between the flange 61 and the pin 54.

4 and 6, etc., the A position is the position where the bag 23 containing products such as potatoes is squeezed by this squeezing device (-), and the C position is the position where the bag 23 containing the product such as potatoes is squeezed. Squeeze your mouth to 0
Position for closing, B, l! :D is an intermediate position between A and C, and from the end of the opening cam 45idC to the end of D C:η
The opening/closing cam 47 is disposed at a distance of λ, and the opening/closing cam 47 is disposed from the A position to the intermediate portion between A and B. ing. On the other hand, the upper and lower cams 59 are disposed at the C position.

Further, in front of the A position where the bag 23 is fed into the device, on the left side in FIG. 4, the bag 231 and the squeeze plate 6 are locked 1N!
33 and a pushing blade 65 which is preliminarily pushed into the notch groove 24 of the fixed blade 25 is attached to a shaft 66 and is rotatably provided below the diaphragm plate 6. The shaft 66 (the second pinion 67 is fixed and off, and this pinion 67 is engaged with a cylinder 68C: a fan-shaped gear 71 that rotates around the shaft 69. Furthermore, each of the turntables 5 At position C: of the aperture plate 6, a support rod 72 is vertically installed, and the support rod 72 has a palm plate 73 for receiving the bag 23, and a palm plate 73 for holding the bag 23 and moving the bag 23 by the turntable 5.
The holding member 74, which facilitates the rotational movement of
; Left and right C: Is it adjustable? Also, is the holding member 74 moderately elastic? The material with (: made from) the desired shape C; so that it can be curved (double).

Next, the operation of the aperture device according to the present invention will be explained.

The bag 23 filled with products such as potatoes by the bagging device # approaches the present device on the conveyor 4, and the locking groove 33 of the squeeze plate 6 which is stopped at position A 23
Insert a. This state is immediately detected by a detection means such as a limit switch or a phototube, and the cylinder 68 is actuated to rotate the pushing blade 65 from the state shown by the two-dot chain line in FIG. Push firmly into the locking groove 33 and the notch groove 24 of the fixed blade 25 that is being lowered.

Almost at the same time, the cylinder 46, which had been pushed outward by the opening/closing cam 47 of the cam follower 34 until then and was in the open state 1 as shown by the two-dot chain line in FIG. Pull back and untie Cam 7 Orowa 34. From this Al2, the lever 35 is pulled by the tension spring 44 to rotate the sector gear 37, and the movable blade 2
7 is rotated between the fixed blades 25 and 25 to grip the opening 23a of the bag 23.

When the above operation is completed, the cylinder 68 is activated and the pushing blade 65 is returned to the open state (= returned), and the cylinder 15 is contracted from the state shown in FIG. The axis 3 is shown in Fig. 2, Fig. 4, etc. (-
Then rotate it counterclockwise C: 90 degrees and immediately extend it to the old position. The cylinder 15 is reduced and the sector tooth j [144-
When rotating clockwise in FIG. 2, the tension spring 22 pulls the arm 18 to remove the brake gear 19 from the large gear 16, and when the cylinder 15 is extended to return the sector tooth jE14 to its original state, the cylinder 21 operates and presses the arm 18,
The large tooth ji [I6 is engaged with the brake tooth 11191 to prevent the rotating shaft 3 from rotating back in the clockwise direction. Opening/closing cam 4
When the turntable 5 rotates, the cam follower 34, which is removed from the opening 7, moves by 12 steps on the inner surface of the gripping cam 47, and allows the movable blade 271 to properly rotate to a predetermined position.
3a to ensure grip.

Due to the rotation of the turntable 5, the bag 23 is moved to the B position by the gripping mechanism 8C at the A position, and the bag 23 is moved to the B position. Receive supply of bags.

When the intermittent drive mechanism 2 operates again in this way, the gripping mechanism 8 at the B position holds the mouth part 23a of the bag 23 while holding the bag 23 at the C position.
Move to position. Since the gripping mechanism 8 is raised to position C (-just before reaching T (-1 the cam follower 58 of the vertical mechanism 7 related to the gripping mechanism 8 is raised by the vertical cam 59), the rotating plate 29 moves toward the horizontal axis 28. It pivots upward on the fulcrum and raises the gripping mechanism by 8ft.As a result, the bag 23, which had sagged by 2g to the left in Fig. Since it is narrowed at the locking groove 33 of No. 6, the entire tension T is moderately lower than if it were added to the right side in FIG.

In the above state, the well-known mouth opening device 9 is operated, and the opening part 23a is opened with a clip or other means at the part of the aperture plate 6 (-). Since the gripping mechanism 8 is transmitted to the traction block 51 via the buffer spring 63, the gripping mechanism 8 rises and closes the opening 23 of the bag 23.
When a is squeezed elastically, it is squeezed smoothly to the mouth part Z (3a1) corresponding to the storage condition of products such as potatoes (C;).

When this is completed, the intermittent drive mechanism 2 is operated again to move the gripping mechanism 8 etc. at the C position to the D position C. At this time, the cam follower 58 first descends along the upper and lower cams 59, and the gripping mechanism 18 is moved to the D position. on the aperture plate 6 (: Oro T.

Next, the cam follower 34 touches the outer peripheral surface of the opening cam 45 (:
along the outward (two movements, moving the movable blade 27 to the fixed blade 25.2
Let the nuki appear between the numbers 5 and 5. In addition, bag 23 that has been opened
The unnecessary mouth part is cut off, and it is taken out from the D position to the outside C:.

The gripping mechanism 8, etc. at the D position will be rotated from the 0 position m to the A position by the next operation of the intermittent drive mechanism 2. At this time, the opening/closing cam 47 will be rotated from the cylinder 46 (Fig. Immediately after the gripping mechanism 8 reaches the A position, the movable blades 27 are in the open state.

Thereafter, the bag is opened by repeating the above operation cycle.

Other embodiments and technical matters of the present invention will be described below.

+11 The turntable 5 of the aperture device shown in the figure has a structure in which it rotates intermittently through 90 degrees, but the rotation angle is arbitrary.

(2) The gripping mechanism 8 may have another structure using an electromagnet or a cylinder as a power source.

(Similarly, the vertical mechanism 7 31 may have another structure using an electromagnet or a cylinder as a power source.

(4) The intermittent drive mechanism 2 is not limited to the one shown.

(5) The gripping mechanism 8 has a horizontal axis 28 as shown in the figure.
If the bag 230 is configured to rotate toward the bottom of the fulcrum C, the bag 230
The mouth portion 23a is pulled toward the rotating shaft 3 (in other words, the aperture is effectively achieved, but it can also be moved straight upwards).

[Effects of the Invention] As explained above, the squeezing device R11 of the present invention has a structure in which the gripping mechanism grasps the opening of the bag and rises, and pulls the opening to eliminate slack in the bag. , the transmission of potatoes, onions, etc. into the bag? It can be packed and packaged in a protected state. Therefore, the potatoes and the like do not collide with each other or rub against each other, and loading can be carried out without any problems.

[Brief explanation of the drawing]

Figure 1 is an external view of the main aperture device, Figure 2 is a plan view of the intermittent drive mechanism, Figure 3 is a cross-sectional view showing the relationship between the vertical mechanism and the gripping mechanism, and Figure 4 is the view of the gripping mechanism and the pushing blades. FIG. 5 is a plan view showing the relationship, FIG. 5 is a sectional view of the drive system of the movable blade, FIG. 6 is a T plan view showing the relationship between the arrangement of each ring cam, and FIG. 7 is a front view of the main parts of the vertical mechanism. . 2...Intermittent drive mechanism 3...Rotary shaft 5...Turntable 6...Aperture plate 7...Vertical mechanism 8... ...Gripping mechanism 23...Bag 23a...Opening portion 33...Latching groove. Applicant: Yamazaki Machinery Co., Ltd. Figure 1

Claims (1)

[Claims] A turntable attached to a rotating shaft, an intermittent drive mechanism that rotates the turntable intermittently, a diaphragm plate having a bag locking groove and attached to the turntable, and a diaphragm plate disposed above the diaphragm plate. A bag filling and packaging machine characterized by comprising: a gripping mechanism for gripping the opening of a bag that is installed in a locking groove of a squeeze plate; and a vertical mechanism for moving the gripping mechanism up and down with respect to the squeeze plate. bag squeezing device.