JPS6344403A - Packaging machine - Google Patents

Abstract

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

Description

DETAILED DESCRIPTION OF THE INVENTION Object of the Invention (Field of Industrial Application) The present invention relates to a drive control means for a film conveying device or a film pressing device in, for example, a packaging machine for fresh foods.

(Prior art and problems to be solved by the invention) Conventionally, as this type of packaging machine, for example, JP-A-58-900
As shown in Publication No. 10 and Japanese Patent Application Laid-Open No. 58-90009, there is provided a film conveying device that cuts a strip-shaped packaging film into predetermined lengths and spreads the cut film on a packaging section; a film holding device that clamps the edges of the wrapped film, an article holder device that carries unwrapped items to the packaging section, an article supply device that transfers the unwrapped items to the article holder device, and a packaging section. Some devices are equipped with a film folding device that wraps the product by folding a stretched film onto the product, and a product unloading device that transports the wrapped product.

Regarding the film conveyance device, the length of the cut film spread on the packaging section varies depending on the size of the product, so the drive timing of the device needs to be precisely controlled according to the length of the cut film. was there. Also, in the case of the film holding device, due to its relationship with the film folding device, it was necessary to finely control the timing for releasing the holding device depending on the size of the item.

Therefore, the present invention enables more detailed and accurate control by detecting the rotation of the main drive motor as a pulse signal and controlling the timing based on the pulse signal numerical data.

Structure of the Invention (Means for Solving the Problems) That is, the first invention has the following features as shown in the drawings of the embodiments to be described later.
A film transport device 1 (see Figure 1.2.3) that cuts a strip-shaped packaging film F into predetermined lengths and stretches the cut film F onto a packaging section S, and the film stretched onto the packaging section S. Film holding device 26.3 that clamps the end of F
7 (see Figures 1 to 3.7 to 9.10 to 16), an article pedestal device 46 (see Figures 1.19 and 20) on which unpackaged items W are placed and transported to the packaging section S; An article supply device 45 (No. 1.19
．． (see Figure 20), a film folding device 76 (see Figures 1, 2, 17, and 18) that folds the film F stretched in the packaging section S onto the item W to wrap the item W, and the wrapped item W. In the packaging machine, the main drive motor 140 (fourth
．． 23), a one-step detection encoder 160 (see FIG. 4.23) that detects one packaging step as the main drive motor 140 rotates, and an encoder 160 (see FIG. 4.23) that detects one packaging step as the main drive motor 140 rotates. Pulse signal detection encoder 1 that detects pulse signals as the motor 140 rotates
61 (see FIG. 4.23.28), and a counter 171 (23rd counter) that counts the number of pulse signals from the pulse signal detection encoder 161 for each step based on the detection signal from the one-step detection encoder 160. (see figure) and drive intermittent devices 141, 144, and 147 for interlocking the main drive motor 140 on the left side of the film transport device 1.
(See Figures 3-6.23-25) and the counter 1
storage means 172 (see FIG. 23) for storing in advance drive timings TA, TB, TC, TD, TE for operating the drive intermittent devices 141, 144, 147 based on predetermined pulse signal numerical data TM, CT of 71; , an indexing means 171 (see FIG. 23) that calculates pulse signal numerical data TM and CT based on the detection signal from the counter 171, and pulse signal numerical data TM calculated by the library indexing means 171.

The drive disconnection device 141, 144° 147 for CT
drive timings TA, TB, TC, TD.

TE is read from the storage means 172, and the drive intermittent device 1 is activated at the drive timings TA, TB, TC, TD, and TE.
Drive control means 171 (
(see Fig. 23).

Then, the unwrapped item W placed on the item supply device 45 is transferred to the item pedestal device 46, and carried by the pedestal device 46 to the packaging section S of the film transport device 1. During this feeding, the rotation of the main drive motor 14.0 is transmitted to the film transport device 1 via the drive intermittent devices 141, 144, 147, and the film F is spread onto the packaging section S. The conveyance control of the film F is performed by the drive intermittent devices 141 and 14 based on preset pulse signal numerical data TM and CT.
4.147. In the packaging section S, the film F is held by the film holding devices 26 and 37, and then folded into the product W by the film folding device 76, the product W is wrapped, and the product unloading device 1
It is carried out by 01.

Further, the second invention is a packaging machine similar to the first invention, including at least a main drive motor 140 (see FIGS. 4 and 23) that drives the film holding device 26, 37, and One-step detection encoder 160 that detects one packaging step (see Figures 4 and 23)
and a pulse signal detection encoder 161 (No. 4.23.28
), a counter 171 (see FIG. 23) that counts the number of pulse signals from the pulse signal detection encoder 161 for each step based on the detection signal from the one-step detection encoder 160, and the film holder. device 26
．． 37 and the main drive motor 140 are interlocked. Ii connection devices 62a, 62b, 62c,
62d (see FIGS. 14 to 16 and 23 to 25) and the drive intermittent devices 62a, 62b, 62c based on the predetermined pulse signal numerical data TM of the counter 171.
, 62d, and a storage means 172 (see FIG. 23) that stores in advance the drive timings TF and TG for operating the pulse signals TF and TG, and a cutting means 171 (see FIG. 23) that calculates the pulse signal numerical data TM based on the detection signal from the counter 171. ) and the drive intermittent devices 62a, 62b for the pulse signal numerical data TM calculated by the indexing means 171.
, 62c, 62d are read out from the storage means 172, and the drive timings TF and TG of
, driven by TG! frFA devices 62a, 62b, 6
2c, 62d (23rd drive control means 171)
(see figure).

Then, the unwrapped item W placed on the item supply device 45 is transferred to the item pedestal device 46, and carried by the pedestal device 46 to the packaging section S of the film transport device 1. During this feeding, the film F is stretched onto the packaging section S. Thereafter, the rotation of the main drive motor 140 is controlled by the drive disconnection device 62a,
62b, 62c.

It is transmitted to the film holding device 26.37 via 62d, and the film F is held therein. The film F is folded into the article W by the film folding device 76, the article W is packaged, and the article is conveyed out by the article conveyance device 101. During this folding, the sandwiching of the film F is released as appropriate. This holding control of the film F is performed by drive intermittent devices 62a and 62b based on preset pulse signal numerical data TM.
, 62C, and 62d.

(Example) An embodiment of the present invention will be described below with reference to the drawings.

1 in Fig. 1 indicates a packaging film conveying device installed on the upper part of the machine frame, and as shown in Figs. 2 and 3, both fixed frames 2
On one side of the space, two roller shafts 3 and 4 and a driven shaft 5 are rotatably installed from the outside, and a pair of upper and lower shafts 6 are installed.
, 7 are fixed, and on the other side there is a pair of upper and lower shafts 10.11.
is fixed. Reference numeral 12 denotes a pair of opening/closing frames supported rotatably in the vertical direction on both front and rear ends of the shaft 6, extending from the support shaft 6 to above the roller 'Pt113, and extending from the ends of the opening/closing shafts 12. A support frame 13 having a handle 14 is fixed between the parts, and a roller shaft 15 is rotatably installed on the base end side of the support frame 13, and a shaft 16 is also fixed thereto.

In FIG. 3, reference numeral 18 denotes a pair of upper and lower rollers that are rotatably supported on the front side of the pair of upper and lower shafts 16.5, and 19 is a support that is rotatably supported on the front side of the pair of upper and lower shafts 6.7. A pair of upper and lower rollers, the upper roller 18,
Two endless round belts 20 are provided on the rear side between the rollers 19 and 19, and one endless round belt 20 is provided between the lower rollers 18 and 19 so as to be interposed between the two optical belts 20. A round belt 20 is attached. Reference numeral 21 denotes a pair of upper and lower rollers rotatably supported on the front side of the pair of upper and lower shafts 10.11, and between the upper roller 21 and the front side of the upper roller 18, Three endless round belts 22 are passed through the rollers 19, and the lower rollers 19 are interposed between the lower rollers 21 and the front side of the lower rollers 18. The four endless round belts 23 are passed over each other, and the lower running part 22a of the upper round belt 23 is interposed between the upper running parts 23c of the lower round belt 23, as shown in FIG. , both running parts 22a,
23a are alternately arranged one by one to form seven belt rows M. 24 is a pair of upper and lower rollers that are rotatably supported with respect to the fixed frame 2 inside the roller 19, and 25 is a pair of upper and lower rollers that are rotatably supported with respect to the fixed frame 2 inside the roller 21. Both the upper and lower round belts 22 and 23 are tensioned by the rollers 24 and 25.

Reference numeral 26A denotes a front film pressing member supported vertically movably with respect to the front fixed frame 2, and is divided into a central pressing portion 26a and left and right pressing portions 26b. As shown in the figure, the lower running portions of the two inner round belts 23 of the lower round belts 23 are inserted, and the pressing portions 26a and 26b are inserted between the upper and lower running portions of the round belts 23. It is ubiquitous. 27 is a pressure receiving plate extending from the fixed frame 2 corresponding to the pressing member 26A, and as shown in FIG.
It is interposed between the upper and lower running parts.

Reference numeral 28 denotes a moving frame inserted into the rear side of the lower shaft 5.7.11 so as to be movable in the axial direction thereof, and a male threaded rod 29 is attached to the female threaded portion 29a attached to both left and right sides of the moving frame. They are screwed together. Both male threaded supports 29 are supported by the fixed frame 2 and are interlocked with each other by a chain 29b, and a handle 29C is attached to one of the male threaded threaded supports 29 on the outside of the fixed frame 2 on the rear side, and this handle 29c
The movement of the moving frame 28 can be adjusted by rotation of the moving frame 28.

A pair of upper and lower rollers 31 are movably and rotatably supported in the axial direction with respect to the pair of upper and lower shafts 16.5 so that they can be positioned within the moving frame 28. A pair of upper and lower rollers 30 and 31 are supported in the same manner as shown in FIG. An endless round belt 49 is passed between the rollers 30 and 31 so as to be interposed between the image tip belts 49. Reference numeral 32 denotes a pair of upper and lower rows similarly supported on the pair of upper and lower shafts 10.11, and these rows 5
30, 31, and 32 are pushed by the moving frame 28 as the moving frame 28 is adjusted, so that they follow the moving frame 28 and move in the axial direction.

33 is four endless round belts passed between the upper rollers 30 and 32 via the upper roller 31;
Reference numeral 4 denotes six endless round belts that are passed between the lower rollers 30 and 32 via the lower roller 31, and as shown in FIG. The lower running part 33a of the upper round belt 33 is interposed between both running parts 348 except between the upper running part 348 at the center, and both upper and lower running parts 33a, 3 except between the upper running part 348 at the center.
4a are alternately arranged one by one to form ten belt rows M. Reference numeral 35 denotes a pair of upper and lower rollers that are rotatably supported within the movable frame 28 inside the roller 31, and move to follow the movement adjustment of the movable frame 28, and move within the movable frame 28 inside the roller 32. Both the optical belts 33 and 34 are tensioned by a pair of upper and lower O-ra 36 that are rotatably supported by the optical belts 28 and 28.

Reference numeral 37A denotes a rear film pressing member supported vertically movably with respect to the movable frame 28, and is divided into a central pressing portion 37a and left and right pressing portions 37b. 38 is moving frame 2
8 is a pressure receiving plate extending corresponding to the rear holding member 37A, and this rear holding member 37A and the pressure receiving plate 38
The positional relationship between the upper and lower round belts 33 and 34 is the same as that of the front film pressing member 26A.

As shown in FIG. 7, a packaging section S is formed between the round belts 22, 23 and 33, 34, corresponding to both the front and rear film pressing members 26A, 37A.

In FIG. 3, reference numeral 39 denotes a pair of pulleys supported at the rear end of the roller shaft 3.4, and an endless flat belt 40 is passed between the two pulleys 39. 41 is a gear fixed to both the upper and lower rollers 21; 42 is a gear fixed to both the upper and lower rollers 32 and movable in the axial direction together with the rollers 32; 11 drive rotations are transmitted.

In Fig. 3.4, 140 is a main drive motor with a transmission installed below the drive shaft 11, and 141 is a first electromagnetic clutch brake (drive disconnection VT device) attached to this main drive motor 140. , which is interlocked with the motor 140 and the drive shaft 11 via flat belts 142, 143, and consists of a clutch that connects and disconnects the interlock between the drive shaft 11 and the main drive motor 140, and a brake that stops the rotation of the drive shaft 11. There is. Therefore, the rotation of the main drive motor 140 is transmitted to the drive shaft 11 through the clutch of the clutch brake 141, and the rotation of the drive shaft 11 is further transmitted to the gear 41.42, the roller 21.32, the round belt 22.23.
A pair of upper and lower shafts 16 on the opening/closing frame 12 side via 33, 34, etc.
, 5.

The portion where the round belts 22, 23, 33, and 34 are hung constitutes the main conveyance device 1A.

In FIGS. 3 and 5, reference numeral 144 denotes a second electromagnetic clutch brake (drive disconnection device) installed below the front end of the lower driven shaft 5. , 146, and consists of a clutch that connects and disconnects the interlock between the roller @4 and the driven shaft 5, and a brake that stops the rotation of the roller shaft 4. Therefore, the rotation of the driven shaft 5 is transmitted to the roller shaft 4 via this clutch brake 144, and furthermore, the rotation of the driven shaft 4 is transmitted to the roller shaft 3 via the flat belt 40. It is also transmitted to the roller shaft 15 which overlaps above. These roller shafts 4.3.15 (brake action section), second clutch brake 144, etc. constitute a braking device 1B.

In Fig. 3.6, 43 is a saw blade support rod rotatably installed between the front and rear fixed frames 2 between the rollers @3 and 4, and a saw blade 43a is attached to almost the entire length of the saw blade support rod. has been done. Reference numeral 44a denotes a photo interlator (saw blade rotation stop sensor) attached to the fixed frame 2 at the front end of the support rod 43, and 44b denotes a rotating claw attached to the front end of the support rod 43. , as the light rotates, it passes through a photo interlator 448. A saw blade rotation stopping means 44 is constituted by the photointerlurator 44a and the rotation claw 44b.

Reference numeral 147 denotes a third electromagnetic clutch brake (drive disconnection device) installed below the rear end of the driven shaft 5, and flat belts 148, 149 are connected to the driven shaft 5 and the saw blade support rod 43.
It consists of a clutch that interlocks the saw blade support rod 43 and the driven shaft 5 to interlock with each other, and a brake that stops rotation of the saw blade support rod 43. Therefore, the rotation of the driven shaft 5 is transmitted to the saw blade support rod 43 via this clutch brake 147.

In FIG. 4, reference numeral 160 denotes a rotary encoder for detecting one step, and a disc 160b (a notch is formed in a part of its outer circumference) is connected to the first output shaft 140a of the main drive motor 140. ) and this disk 160
It consists of a photointerlurator 1608 whose notch passes through as the part b rotates. 161 is a rotary encoder for pulse signal detection consisting of a first encoder 162 and a second encoder 163, and the first encoder 162 is connected to the second output shaft 140 of the main drive motor 140.
The rotary tooth plate 162b (which has a plurality of uneven portions formed on its outer periphery) connected to b and the rotary tooth root 162b
The second encoder 163 includes a rotary tooth plate 163b connected to the output shaft 141a of the first electromagnetic clutch brake 141 (with a plurality of rotary tooth plates on its outer periphery). ), and the photointerlurator 1 through which the uneven portions pass as the rotary tooth plate 163b rotates.
63a.

A case will be described in which a packaging film F is set from a take-up roll (not shown) provided on one side of the machine frame to the packaging film conveying device 1 configured as described above. In this case, the position of the moving frame 28 is adjusted in advance according to the width dimension of the packaging film F by operating the handle 29C. When the handle 14 on the side of the machine frame shown in FIG. 30 and the film supply port P opens.

From this state, the starting end of the packaging film F on the take-up roll is guided to the supply port P via both roller shafts 3 and 4, and placed on the lower round belt 20.23.34.49 shown in FIG. . Next, the opening/closing frame 12 is returned downward, and the upper roller 18,
30 and the lower rollers 18, 30 are brought close to each other and the film supply port P is closed, both edges in the width direction of the packaging film F run under the upper round belt 22°33 as shown in FIG. The running section 23a is the first row from the inside of the belt row M consisting of the sections 22a, 33a and the upper running sections 23a, 34a of the lower round belt 23.34.

34a, below the running sections 22a and 33a of the second row, and above the running sections 23a and 34a of the third row, thereby creating a vertical meandering state.

From this set state, the packaging film F is guided and stretched to the packaging section S by the drive of the main conveyance device 1A as shown in FIG. As shown in FIGS. (a> and (b)), each pressing portion 26a of the front and rear film pressing members 26A, 37A is moved upward.
, 26b, 37a, 37b and the pressure receiving plates 27, 38 together with the belt row M.

Next, regarding the packaging film pressing device 26.37, the first
~3.7~9.10~16 Detailed explanation will be given according to Figures. The left and right pressing portions 26b of the front presser member 26A described above are integrally connected at a connecting portion 26c as shown in FIG.
A central pressing portion 26a is placed in a recess 26b formed on the upper surface of the center portion c.

Fig. 10.11 shows the vertical movement mechanism of the left and right pressing portions 26b, and reference numeral 127 extends horizontally in the same direction from fixed shafts 128 supported at both front and rear positions of the front fixed frame 2.
A pair of support rods rotatably supported with respect to 8,
The left and right pressing portions 26b are rotatably supported by a shaft 129 between these tip portions, and the distance between the centers of both shafts 128 and 129 is the same. A pair of interlocking rods 130 extend upward from the fixed shaft 128 and are integrated with the support rod 127. A connecting rod 131 is rotatably supported by a shaft 132 between the distal ends of the interlocking rods 130, and is connected to both wheels. 128.13
The distance between the two center lines is the same, and the angular difference between the supporting rod 127 and the interlocking rod 130 with respect to the center line of the fixed shaft 128 is the same. 133
is an operating rod that extends horizontally from one of the support rods 127 in the opposite direction about the fixed shaft 128 and is integrated with the support rod 127.

50b is a wire hooked to the shaft 135b at the tip of the operating rod 133 in this vertical movement mechanism, and 51b is a wire hose through which the wire 50b is inserted, one end of which is provided below the operating rod 133. fixed plate 52t)
Fixed to .

53b is a wire 506G exposed from the wire hose 51b between the operating rod 133 and the fixed plate 52b.
,: A wound spring that always biases the operating rod 133 in the rotating direction of the arrow G.

7 and 11 show the upper and lower structure of the central pressing part 26a,
54 is a rotation shaft rotatably supported by a pair of brackets 55 fixed to the lower surface of the pressure receiving plate 27; 56 is a mounting member fixed to one end of the rotation shaft 54;
The central pressing portion 26a is fixed. Reference numeral 57 represents an operating rod fixed to the other end of the rotating shaft 54, and extends downward.

50a is the shaft 1 at the tip of the operating rod 57 of this vertical movement mechanism.
The wire 51a hooked to the wire 35a is a wire hose through which the wire 50a is inserted, and one end of the wire 51a is fixed to a fixed plate 52a provided at the rear of the operating rod 57. 53a is the operating rod 57 and the fixing plate 52a.
A spring is wound around the wire 50a exposed from the wire hose 51a between the two, and normally biases the operating rod 57 in the rotational direction of the arrow 1.

Also, as shown in Fig. 3.12.13, the rear presser member 37A
Similarly to the front pressing member 26A, the left and right pressing parts 37b are integrally connected by a connecting part 37c, and this connecting part 3
The central pressing portion 37a is located in the recess 37b formed on the upper surface of the 7c.
is listed.

FIG. 7.13 shows the vertical movement mechanism of the central pressing part 37a of the rear holding member 37A, and 58 is a rotation shaft rotatably supported by a pair of brackets 59 fixed to the lower surface of the pressure receiving plate 38. , 60 is a mounting member fixed to one end of this rotating shaft 58, to which the central pressing portion 37a is fixed. Reference numeral 61 denotes an operating rod fixed to the other end of the rotating shaft 58, and extends rearward.

50c is the shaft 1 at the tip of the operating rod 61 of this vertical movement mechanism.
A wire 51c is inserted into the wire 500, and one end thereof is fixed to a fixed plate 52C provided below the operating rod 61. 53C is the operating rod 61 and the fixing plate 5
The spring is wound around the wire 50G exposed from 2c, and normally biases the operating rod 61 in the rotational direction of the arrow J.

The operation of the left and right pressing parts 37b of the rear presser member 37A is controlled by a vertical movement mechanism similar to that of the left and right pressing parts 26b of the front presser member 26A. 135d has wire hose 5
A wire 50d inserted through the wire 1d is hooked.

FIGS. 14 to 16 show the operation control mechanism of the presser members 26A, 37A, and the respective pressing portions 26a, 26b, 37a of the presser members 26A, 37A.

An electromagnetic clutch brake 62a that controls the operation of 37b,
62b, 62C, and 62d are fixed on the machine base, and the drive side rotating shaft 63a extends horizontally from both sides of each clutch brake 62a1, 62b, 62c, and 62d.

63b, 63c, 63d and output side rotating shaft 64a.

64b, 64c, and 64d are projected. and clutch brakes 62a, 62b, 62c.

The drive side rotating shaft 63a,
63b, 63c, 63d and output side rotating shaft 64a,
64b, 64c, and 64d are intermittent, and
Clutch brakes 62a, 62b, 62c.

The output side rotating shaft 64a is rotated by the brake in 62d.

The rotation of 64b, 64c, and 64d is stopped so that the stopped state can be maintained. A driven gear 65 is attached to each of the drive-side rotating shafts 63a, 63b, 63c, and 63d, and is meshed with one drive gear 67 attached to a drive shaft 66. Moreover, each output side rotating shaft 64a, 64b, 64c.

64d has output levers 68a, 68b, and 68c.

68d is fitted.

Each of the output side rotating shafts 64a', 64b, and 64c.

Mounting plates 69a and 69b erected corresponding to 64d
, 69c, 69d are the respective fixing plates 52a, 52b.
, 52c, and wire hose 51a fixed to 52d.
, 51b, 51c, and 5''ld are fixed, and the other ends of the wires 508, 50b, 50c, and 50d that pass through the hoses 51a, 51b, 51c, and 51d are the respective output levers 68a, 68b.

It is hooked onto the shaft 70 at one end of 68C and 68d. A stopper rod 71 is rotatably connected to the other end of each of the output levers 68a, 68b, 68c, and 68d, and the tip thereof is connected to each of the mounting plates 69a.

It is inserted into 69b, 69c, and 69d.

Male threads 72 are formed on these stopper rods 71, and adjustment double nuts 73 are screwed onto these i threads 72.
are the mounting plates 69a, 69b, 69c.

69 (output levers 68a, 68b are latched to I.

The tilting movements of 68c and 68d are restricted.

Packaging film pressing device 26 configured as described above.
37, the operation control of the left and right pressing portions 26b of the front pressing member 26A will be explained first.

When the clutch and brake in the clutch brake 62b shown in Fig. 14.15 are released, the rotation of the drive shaft 66 is caused by the drive side rotation via the drive gear 67 and the driven gear 65 during the operation of the packaging machine. Even if it is transmitted to the shaft 63b,
The rotation is not transmitted to the output side rotating shaft 64b via the clutch. In this state, as shown in FIG. 10, the operating rod 133 is biased by the spring 53b in the direction of the arrow G, and the wire 50b is pulled upward, and as shown by the solid line in FIG. 68b is rotated in the opposite direction of the arrow, and the stopper rod 7
1 is stopped when it is locked to the mounting plate 69b.

Next, when the clutch in the clutch brake 62b is connected, the rotation of the drive side rotation shaft 63b is transmitted to the output side rotation shaft 64b, and the output lever 68b is rotated in the direction of the arrow. 50b is pulled, and the operating rod 133 is rotated in the counter-G arrow direction against the bias of the spring 53b. One of the support rods 127 that is interlocked with this operating rod 133 is rotated about the fixed shaft 128 in the counter-G arrow direction, and as the support rod 127 is rotated, it is also rotated about the same axis 128. The connecting rod 131 is pulled diagonally downward by the connecting rod 130, and the other connecting rod 130 is rotated in the direction of the arrow G about the fixed shaft 128, so that the other supporting rod 127 is also pulled along the same axis 12.
It is rotated about 8 in the direction of the anti-G arrow. When these support rods 1 and 27 are simultaneously rotated in the direction of the arrow G, the entire left and right pressing portions 26b are moved upward on the average, and as shown in FIG. 8(a), the inner side of the belt row M is It is securely held between the five left and right pressing portions 26b and the pressure receiving plate 27. Note that the upward movement of the left and right pressing portions 26b is caused by the central pressing portion 26a described later.
This is done at the same time as the upward movement of After that, clutch brake 6
When the clutch in 2b is released, the output side rotating shaft 6
When the brake 4b is applied, the output lever 68b is held in the tilted position as shown by the imaginary line in FIG. 15, and then the left and right pressing portions 26b maintain the clamped state.

When the brake in the clutch brake 62b is also released from this state, the operating rod 133 is rotated in the direction of arrow G by the biasing force of the spring 53tl, and the left and right pressing portions 26b move downward. When the wire 50b is pulled upward with this downward movement, the output lever 68b shown by the imaginary line in FIG. 15 is rotated in the opposite direction of the arrow and returns to the position shown by the solid line in FIG.

On the other hand, the front presser member 26 shown in Figs. 4.11 and 12.13
In the central pressing part 26a of A, the central pressing part 37a and the left and right pressing parts 37b of the rear holding member 37A, the respective clutch brakes 62a and 62C are used similarly to the left and right pressing parts 26b of the front holding member 26A.

62d, those operating rods 57, 61.1
34 are operated via output levers 68a, 68c, 68d and wires 50a, 50c, 50d.

That is, regarding the center pressing portion 26a of the front holding member 26A, the clutch is connected from the state in which the clutch and brake in the clutch brake 62a are released, and the operating rod 57 is moved in the opposite direction as shown in FIG. When the central pressing part 26a is rotated in the direction, this rotation causes the central pressing part 26a to
8 in the direction of the anti-I arrow and moves upward, as shown in Fig. 8 (
As shown in b), the inner five belts of the belt row M are securely held between the central pressing portion 26a and the pedestal plate 27. Thereafter, when the clutch is released and the brake is applied, the central pressing portion 26a maintains its clamping state. Next, when the brake is released and the rotating wheel 58 is rotated in the direction of the arrow I by the bias of the spring 53a, the central pressing part 26a is rotated in the direction of the arrow ■ about the rotation shaft 58 and moved downward. Then, it is placed again in the recess 26d between the left and right pressing parts 26b.

As for the center pressing part 37a of the rear holding member 37A, as with the central pressing part 26a of the front holding member 26A, when the operating rod 61 is rotated in the direction of the arrow J or in the direction of the arrow J shown in FIG. , the central pressing part 37a is shown in FIG. 9(b).
As shown in the figure, the belts are moved up and down corresponding to the inner five belts of the belt row M.

Regarding the left and right pressing parts 37b of the rear holding member 37A, as in the case of the left and right pressing parts 26b of the front holding member 26A,
By rotating the operating rod 134, the left and right pressing portions 37
As shown in FIG. 9(a), belt b is moved up and down corresponding to the inner five of the belt rows M.

As shown in FIG. 1.2, a packaging film folding device 76 is installed above this packaging film conveying device 1, and a packaging film folding device 76 is installed above the packaging film transport device 1.
As shown in Fig. 17, both sliders 79 supported so as to be movable in the front and back directions are connected to rails 78 arranged on both left and right sides of the upper part of the machine frame by a connecting plate 80 and rollers 81 on both the front and rear sides thereof. The rear folding member 82a is the rear folding member 77
Both left and right support members 82 are supported so as to be movable in the left and right directions with respect to a support plate 83 installed between the rear ends of both rails 78 at the rear of the rails 78. A left and right folding member supported by a shaft 84, and a rear folding member 7 from the same shaft 84 (rotation fulcrum).
7 and extends forward, with an auxiliary folding plate 8 at the tip.
6 is screwed on so that its position can be adjusted.

Reference numeral 89 denotes a front folding member installed between the front ends of both the rails 78, and has both front and rear conveyance rollers 90 and a folding roller 91 provided behind the rear side conveyance roller 9o. A plurality of round belts 90a are passed between the rear side 11a feed roller 90 and the folding roller 91, and a round belt 90b is passed between the rear side 11a feed roller 90 and the folding roller 91 at both ends, and both optical belts 90a , 90b rotate only in the direction of arrow C.

Reference numeral 180 denotes a threaded rod supported on the support plate 83 so as to extend in the left-right direction, and is formed with a left-hand threaded portion 180a and a right-handed threaded portion 180b, and is connected to both the left and right supporting members 82.
One of the support members 82a of a has a left-handed threaded portion 180al,
: They are screwed together, and the other support member 82a is screwed into the right-hand threaded portion 180b. Reference numeral 181 denotes an electric motor mounted on the machine frame behind the left and right support members 82a, and a pulley 182a of its output shaft 181a is connected to a pulley 182b attached to a threaded rod 180 between the left and right support members 82a. 182 via a flat belt 182. This electric motor 181 causes the threaded rod 180 to
When the left and right support members 82a are rotated, the left and right support members 82a move on the left and right threaded portions 180a and 180b to approach or separate from each other.

In FIG. 17.18, 183 is the left and right support member 8.
It is an L-shaped guide plate fixed to the front part of 2a, and consists of a base plate part 183a extending to the left and right sides, and an engagement plate part 183b extending forward from the tip thereof along the rail 78. Roller 1 attached to the tip of 183b
84 is supported movably in the left-right direction on a rail portion 185 on the machine frame. When the left and right support members 82a move in the left and right direction, the left and right guide plates 183 also move in the same direction with this movement. 186
187 is a guide groove formed in the engagement plate portion 183b of the guide plate 183 so as to extend in the front-rear direction; 187 is a guide bin engaged with the guide groove 186; Slider 7 of member 77
It is supported by an elongated hole 188 so as to be movable in the left-right direction with respect to a projecting plate portion 79a which is provided to protrude from one side. Reference numeral 189 denotes a link rotatably supported between the lower end of the guide bin 187 and the front end sides of the left and right folding members 82. When the slider 79 of the rear folding member 77 moves forward and backward along the rail 78, the guide bin 18
7 is fixed in the guide groove 186 of the guide plate 183 and moves.
The left and right folding members 82 are connected to a rotation fulcrum 84 by a link 189.
They rotate around the center to open and close each other. Further, when the left and right support members 82a approach and separate from each other, the guide bin 187 moves along the long hole 188 of the slider 79, and the left and right folding members 82, the guide plate 183, the guide bin 187, and the link 189 are at the same position. Translate horizontally while maintaining the relationship.

In FIG. 1.2, 93 is a bracket erected on the rear end of the rail 78, and 94 is a lever fixed to a support shaft 95 rotatably installed between the upper parts of the bracket 93. It is rotatably supported by a shaft 96a with respect to an interlocking rod 96 that is driven up and down. 97 is a pair of levers fixed to both ends of the support shaft 95 on the outside of the bracket 93; 98 is a link rotatably supported by a shaft 99 at the tip of the lever 97; It is rotatably supported by a shaft 100.

When the interlocking rod 96 is in the upward movement position, the rear folding member 77 is in the retracted position and the left and right folding members 82 are in an open state as shown in FIG. When the interlocking rod 96 moves downward from this state, the first
As shown in the figure, the rear folding member 77 is pushed forward by the lever 97 and the link 98, and the position of the guide groove 186 of the guide plate 183 is regulated by the guide bin 187 of the rear folding member 77, so that the left and right folding members 82 are moved forward. Closed to each other via 18 links, these front, rear, left and right folding members 89.77.
The space between 82 and 82 is defined as the folded portion R. This folding section R corresponds to the packaging section S of the packaging film conveying device 1, as shown in FIG.

FIG. 1.2 shows a device 101 for discharging goods W, and reference numeral 102 denotes a support shaft 103 installed between the lower portions of both the brackets 93.
a pair of links rotatably supported on both sides of the
Reference numeral 3 denotes a pair of links rotatably supported on both sides of a support shaft 114 installed between both brackets 93 below the support shaft 103, and each link 102.
113 extends forward from the support shafts 103 and 114. 1
16 is a shaft 11 between the tips of both links 102 and 113.
6a and 116b are rotatably connected to each other, and a roller 120 is attached to a portion extending forward from both left and right shafts 116b on the lower side. 104
is a conveyor on which an endless sponge belt 104a is stretched, and a guide plate 1 extends rearward from both sides of the rear end.
15, the guide plate 115 is supported to be rotatable in the vertical direction with respect to the shaft 116b, and the guide plate 115 is placed on the O-ra 120 of the interlocking link 116, and is mounted on the packaging section S of the packaging film conveyance device H1. is supported in a horizontal state. 117 is a connecting rod connected between both the interlocking links 116; 118 is a handle rotatably supported on a support rod 119 installed between the upper parts of both brackets 93; It is screwed into the connecting rod 117. In addition, each of the links 102, 113.11
6 constitutes a four-bar link mechanism in which the two support shafts 103 and 114 are fixed nodes.

Then, when the handle 118 is rotated, the connecting rod 117
moves along the threaded rod 118a, and both links 102
moves vertically around the support shafts 103 and 114, and moves the guide plate 115 of the conveyor 104 to the O-
The conveyor 104 moves in parallel in the vertical direction while the roller 120 slides.

108 is a belt pulley fixed to the drive shaft 104b of the conveyor 104, 109 is a belt pulley rotatably supported by the support shaft 114, and both belt pulleys 108 and 109
A round belt 110 is passed between them. Reference numeral 121 denotes an idler lever fixed to the guide plate 115 of the conveyor 104, which tensions the round belt 110. 111 is the support shaft 1 so as to be interlocked with the belt pulley 109.
The sprocket is rotatably supported by the chain 114, and is driven and rotated by the chain 112.

Then, when the chain 112 is rotated in the direction of arrow D,
Sprocket 111, belt wheel 109, round belt 110
, the belt 10 of the conveyor 104 via the belt pulley 108
4a rotates in the feeding direction E. However, the sprocket 111 is connected to the support shaft 114 by the one-way clutch 111a.
Since the rotation of the chain 112 is not transmitted to the sprocket 111, the belt 1 of the conveyor 104
04a does not rotate in reverse.

1.19.20, reference numeral 45 denotes a belt conveyance type article supplying device installed below the film conveyance device 1 both inside and outside the machine frame.
It consists of a first conveyor 190 consisting of a conveyor 90A and an intermediate conveyor 190B, and a second conveyor 191 on the inside, and only the second conveyor 191 is introduced into the machine frame.

The outer conveyor 19 of the first conveyor 190
For 0A, the endless flat belt 192 is attached to both pulleys 19
A hook is passed between 2a and 192b, and one pulley 192
The rotation of the drive motor 193 with respect to a is caused by the transmission gear 194,
195, 196, and 197.

Intermediate conveyor 19 of first conveyor 190
For 0B, the endless round belt 198 connects both pulleys 19
A plurality of hooks are passed in parallel between 8a and 198b, and the rotation of the drive motor 193 is transferred from the transmission gear 194°195.196 to the transmission gear 1 with respect to one pulley 198b.
99, a sprocket 200a, a chain 200, and a sprocket 200b. An electromagnetic brake 201 is attached to the rotation center shaft 196a of the transmission gear 196.

Regarding the second conveyor 191, the endless round belt 2
A plurality of brackets 20 are installed in parallel between both pulleys 203 and 204, and a support plate 205 installed inside one of the pulleys 203 is provided with a plurality of brackets 20.
An endless round belt 207 is passed between the pulley 203 and a pulley 207a supported by the tip of the bracket 206, which is fixed so as to project inward.

Reference numeral 150 denotes guide rods placed in parallel on both left and right sides of the article supply device 45 so as to extend in the front and back direction, and are rotatably supported on both the front and rear sides of both left and right sides of the article supply device 45. Link 15 that can rotate integrally with shaft 151
2 is rotatably supported. 153A is a potentiometer (product width detection sensor) attached to one side of the product supply device 45, and the rotation operation shaft 15 is linked to the potentiometer (product width detection sensor).
4 is supported on the lower surface of the article feeding device 45 so as to extend in the left-right direction, and this rotary operation shaft 154 has a left-hand threaded portion 1
54a and a right-handed threaded portion 154b. 155
is a moving block screwed onto both threaded portions 154a and 154b, and a link 156 is rotatably supported between the support shaft 151 and a lever 151a which is rotatable together. Then, the rotation operation shaft 154
When the handle 157 is turned, the movable blocks 155 on the same axis 154 move toward and away from each other, and both guide rods 150 on the article feeding device 45 also move toward and away from each other via the link 157, the support shaft 151, and the link 152, and rotate. The rotational displacement of the dynamic operation shaft 154 is transmitted to the potentiometer 153A. Therefore, the item W placed on the item supply device 45
When both guide rods 150 are aligned with the left and right edges of the item (with items stored in the h-ray), the potentiometer 153A detects a detection signal proportional to the distance between the guide rods 150, that is, the width of the item W in the left and right direction. is now detected. And both guide rods 150, potentiometer 153A, rotation operation? l11154 and moving block 1
55 and the like constitute an article width detection means 153.

Both pulleys 203.2 to which the round belt 202 is passed
A lever 209 is supported on a support shaft 208 installed adjacent to one pulley 204 of the 04 so as to protrude toward the other pulley 203, and is biased downward by a spring 209a. A comb-shaped stopper member 210 is attached to the tip of 209 .

A cam plate 212 is supported on a support @ 211 installed below the lever 209 so that it can come into contact with a roller 213 supported at an intermediate portion of the lever 209 . The rotation center shaft 203a of one pulley 203 and the cam plate 21
The second spindle 211 is the sprocket 214 and the chain 21.
5 and a sprocket 216. As the cam plate 212 rotates, the lever 209 tilts upward against the bias of the spring 209a, and the stopper member 210 moves to the article transfer surface 202a on the round belt 202.
The stopper member 210 repeatedly protrudes upward and then retracts below the article transfer surface 202a by the urging of the spring 209a.

A first sensor 1 is installed above the conveyor 190B in the vicinity of the adjacent portion between the intermediate conveyor 190B and the second conveyor 191 of the first conveyor 190.
65 and a second sensor 166 are also provided. and,
The first sensor 165 first detects the article W being transferred on the conveyor 190B, and then the article W is transferred on the conveyor 1.
The second sensor 166 detects the article W when it moves further due to the inertial rotation of the article 90B.

A third sensor 167 consisting of a light emitting element 167a and a reflecting plate 167b is disposed on both sides of the second conveyor 191 in the vicinity of the stopper member 210.
10, the article W to be stopped is detected.

As shown in Fig. 1.19.20, 46 is the article supply device 4.
5 and the packaging section S and the folding section R, the device is equipped with a plurality of loading tables 46a that are biased to be movable at the lowest position. At this position, the article W is transferred from the article supply device 45 and placed thereon, and is positioned by the stopper 47a of the article positioning device 47.

2.21.22, 220A and 220B are first and second limit switches (item height detection sensors) attached to the bracket 93 at one end of the support shaft 103, and 221 and 222 are the support shaft 103. The first and second tilting plates are supported so as to be integrally rotatable while being slightly shifted from each other in the circumferential direction, and when the support shaft 103 rotates together with the link 102, the first tilting plate 221
pushes the operating rod 220a of the first limit switch 22OA, and then the second tilting plate 222 pushes the operating rod 220a of the first limit switch 22OA.
The operating rod 220b of 20B is pushed. The conveyor 104, as shown in FIG.
The article W placed on the ijf 46 moves upward to the folding part R, and below it, the rear folding member 77 and the left and right folding member 8
After the folding operation is performed in step 2, the article W is transported forward and folded by the front folding member 89. 104, the distance N between the top surface of the pedestal bag @46 and the conveyor 104 is approximately equal to the height H of the item W, and the variation in the height H of the item W can be replaced by the variation in this distance N. can be replaced by the rotational displacement of the support shaft 103. Therefore, as described above, as the support shaft 1°3 rotates, the first and second tilting plates 221
．． 222 by the first and second limit switch 22OA
.

220B is equivalent to detecting the height H of the item W in a certain range, and this tilting plate 221.2
22 and limit switch 22OA.

220B constitutes the article height detection means 220.

Reference numeral 48 denotes a heater device which is interlocked with the front folding member 89 of the film folding device 76, and the packaged product is placed on the flat belt 48a.

Although not shown, a cam device is attached to the third output shaft of the main drive motor 140, and a cam device is attached to the third output shaft of the main drive motor 140.
6 and the interlocking rod 96 of the film folding device 76 are interlocked with this cam device. This third output shaft is also linked to the drive shaft 66 for the film holding members 26, 37 and the chain 215 of the second transport conveyor 191. A chain 112 of the article unloading device 101 is connected to a rotary lever fixed to the drive shaft 66, and the front folding member 89 of the film folding device 76 rotates back and forth as the lever rotates. The flat belt 48a of the heater device 48 is interlocked with an electric motor.

That is, the film conveyance device 1, the film holding device 26, 37, the article pedestal device 46, the second conveyor 191 of the article supply device 45, the film folding device 76 (excluding the front folding member 89), and the article unloading device 101. All of them use the main drive motor 140 as a drive source, and among them, especially the film conveying device 1 and the film holding device 26.
37 is each clutch brake 141, 144, 147.6
2a, 62b, 62c, and 62d, and is also driven by the first conveyor 190 of the article supply device 45.
uses a conveyor drive motor 193 as a driving source.

Next, the electrical configuration of the packaging machine configured as described above will be described.

In FIG. 23, a microcomputer 170 is composed of a central processing unit (hereinafter referred to as CPU) 171, a program memory 172 consisting of a read-only memory (ROM), and a working memory 173 consisting of a readable and rewritable memory (RAM). It is built into a control box (not shown) provided in the equipment to be installed. And the CPU
171 operates based on a control program stored in program memory 172.

The main switch MS is input to the CPU 171, and this input signal causes the CPU 171 to control the main drive motor 14.
0 and conveyor drive motor 193 are operated.

The first encoder 162 and second encoder 163 for pulse signal detection are input to the CPU 171, and based on these input signals, a counter in the CPU 171 counts the number of pulse signals from these encoders 162 and 163, and the CPU 1
Reference numeral 71 is an indexing means which outputs pulse signal numerical data T to 1 and CT at t7 based on the detection signal from this counter.

The one-step detection encoder 160 is input to the CPU 171, and based on this input signal, the CPU 171 returns the pulse signal \"i number of the first encoder 162 to zero every predetermined number TM as shown in Fig. 24.25. Each of these categories (First!III process, Initial process, Continuous process, etc.) is one packaging process.

The first sensor 165 and the second sensor 166 are
71 is input. When the first sensor 165 detects the article W, the conveyor 193 stops based on the detection signal, and both conveyors 190A and 190B of the first general conveyor 190 also stop. When the second sensor 166 detects the article W when the article W is further moved due to the inertial rotation of the conveyor 190B, the conveyor electromagnetic brake 201 is activated based on the detection signal.
moves to completely stop the first conveyor 190, and after a predetermined time (the stopper member 21 in the second conveyor 191
0 protrudes upward from the round belt 202), the operation of the conveyor electromagnetic brake 201 is released and the conveyor drive motor 193 is rotated.

The third sensor 167 is input to the CPU 171. This sensor 167 and the second sensor 166
detects the article W, the clutch of the first clutch brake 141 (drive intermittent device for the main conveyance device) is connected and the brake is released, and the rotation of the main drive motor 140 is controlled by the main conveyance device 1A. and the second clutch brake 144 (
Control! The clutch of the IJ device drive disconnection device) is connected and the brake is released, so that the rotation of the main conveyance device 1A is transmitted to the braking device 1B.

The potentiometer 153A serves as an article width detection sensor. That is, as described above, when the guide rods 150 are aligned with both the left and right edges of the article W placed on the article supply device 45, the detection signal of the potentiometer 153A proportional to the width of the article W in the left and right direction is output to the CPU 1.
71. And CPU17
1 calculates the width of the article W in the lateral direction based on this input signal. This performance result is temporarily stored in the working memory 173.

The limit switches 22OA and 220B serve as article height detection sensors. That is, as described above, when the conveyor 104 is moved up and down, the limit switches 220Δ, 220B proportional to the height H of the article W are activated.
The detection signal is input to the CPU 171. Then, the CPU 171 calculates the height of the item W based on this input signal. This Fl calculation result is temporarily stored in the working memory 173.

The photo interlator 448 (saw blade rotation stop sensor) is input to the CPU 171, and when the rotating claw 44b reaches the photo interlator 448 after one rotation, the third clutch brake 147 (saw blade drive I71 When the -clutch of the disconnecting device) is engaged, the brake is applied and the saw blade support rod 43 comes to a sudden stop.

In addition to the control program, the program memory 172 has a program that is stored in the program memory 172 in accordance with the horizontal width of the article W along the transport direction A of the strip-shaped packaging film F when the unwrapped article W is sent to the packaging section S. The optimum film length FL is stored in advance. In other words, when the width of the product W in the left and right direction is divided into certain ranges, Ll, L2... (Ll < L2), the film length FL is FLl, FL2...
- (FLl <FL2) is selected.

Further, the program memory 172 also stores in advance a value F l-' of the film length FL in accordance with the height H of the item W. That is, the values obtained by dividing the height H of the item W into certain ranges are Hl, H2...(Hl<)-12>
, the correction value FL− of the film length FL is F
L1', FL2-... (FLI = <FL2-)
is now selected.

Then, the film length FL and its correction [FL' are calculated. Therefore, when FL”=0, FL
n (n-1, 2-・l, or each film length FLl
, FL2 . . . each of these correction values FL1-. FL
2'...The sum of each, that is, FL n
+FLn'' (n = 1.2...) is the type of film length.

However, in reality, the FL is divided into 16 stages, and the FL is divided into 16 stages.
There are three stages for L- (FL'= when neither the first nor second limit switches 22OA and 220B operate).
0, when only the first limit switch 130A operates, FL'=FL1', the - and second limit switch 2
When both 2OA and 220B operate, FL'=F
L2').

In this embodiment, all types of films F are divided into long and short parts, and for the short films F, the program memory 172 stores the initial process (2) and continuous process (2) for each film length, as shown in FIG. The first clutch brake 141 (drive disconnection device for main conveyance device) in the following
Drive timing TA1. TE1, also drive timing TA1 of the second clutch brake 144 (drive disconnection device for control device). TC1, TD1, and drive timing TB1 of the third clutch brake 147 (saw blade drive disconnection device) are stored in advance (storage means). Also, for the long section of film F, the program memory 172 stores drive timings TA2, Ta2, TD2, TD2 for each film length as shown in FIG.
, TE2 are stored in advance (storage means). Said TA
<TAL, TA2) is equal to the pulse signal numerical data TM1 from the first encoder 162, and the clutches of the first and second clutch brakes 141, 144 are connected and the brakes are released, and the main conveyor 8 position 1A and the brake are The timing at which the device 1B rotates is shown. Said TB
(TBl, Ta2) indicates the timing at which the clutch of the third clutch brake 147 is connected and the brake is released after the rotation of the main conveyance device 1A and the control device 1B, and the saw blade 43a rotates, and TA (TA1).

The pulse signal numerical data CT2 from the second encoder 163 starting at TA2) was added to the TM1 (TM1+
CT2). Note that the saw blade rotation stop sensor 44
The time period when the saw blade 43 suddenly stops when a is activated is the same data CT.
Equal to 3. The TC (TCl, TD2) is a saw blade 43a
The pulse signal numerical data CT4 from the second encoder 163 indicates the timing at which the clutch of the second clutch brake 144 is disengaged and the brake is heated to stop the rotation of the roller shafts 15, 4 of the braking device 1B. (TM1+CM4) added to TM1 L,,
stomach. The To (TO1, TD 2 ) is the control device 1B.
After the roller shafts 15, 4 stop and before the main conveyance device 1A stops, the clutch of the second clutch brake 144 is connected, the brake is released, and the braking device 1B rotates again. pulse signal numerical data CT5 was added to the TM1 (T
M1+CT5). Note that the time period during which the braking device 1B rotates is equal to the same data CT6. Said TE(T
El, TE2), after the rotation of the main conveyance device 1A, the clutches of the first and second clutch brakes 141 and 144 are disconnected and the brakes are heated.
and indicates the timing at which the braking device 1B stops, and is equal to (7M1+CT1) obtained by adding the pulse signal numerical data CT1 from the second encoder 163 to the above TM1. In addition,
(7M1+CT1) is equal to (TM1+CT5+CT6).

Further, for a long section of film F, the drive timing TD (TDO) is previously stored in the program memory 172 (storage means) in the initial step (3) shown in FIG.

This TDO is performed on the condition that the second sensor 166 detects the article W, and the second clutch brake 141.
144 is connected and the brake is released to rotate the main W1 feeding stomach 1A and the braking device 1B, and is equal to the pulse signal numerical data TMO from the first encoder 162. Note that the time period during which these rotate is equal to the number of pulse signals from the second encoder 163 (direct data CT○).

Furthermore, the CPU 171 records each drive timing TA, TB stored in the working memory 173.

TC, TD, and TE are read from the program memory 172 and the drive timings TA and TB are determined.

Each clutch brake 141°144 for TC, TD, TE
．． 147 (drive control means). That is, by this drive control, in the case of a short section of film F, the drive timing TA1. TB1. T.C.
1. TDl and TEL are also short, and on the contrary, film F is long.
In the case of drive timing T△2. TB2. TC2,T
D2. TE2 will also be longer.

In addition, as shown in FIG. 23, the film length can be set by using a film length setting manual dial 158 that can select an arbitrary film length according to the horizontal width and height H of the item W. The CPU i 71 may be configured to input a signal from the dial 158 corresponding to the CPU i 71. - On the other hand, the program memory 172 stores the film holding device 26 in the continuous process (1) and subsequent steps shown in FIGS. 24 and 25.
37 electromagnetic clutch brakes 62a, 62b, 6
Drive timing TF of 2c, 62d (drive intermittent device for front center, front left and right, back center and rear left cloth film presser)
(timing when the clutch is connected and the brake is released and the center pressing part 26a and left and right pressing parts 26b of the front film pressing member 26A and the central pressing part 37a and left and right pressing parts 37b of the rear film pressing member 37A press the film F) and TG (when the clutch is disengaged and the brake is applied, each pressing portion 26a, 26b, 37a,
37b is separated from the film F) is stored in advance (storage means). That is, the clutch brakes 62a, 62b, 62c are adjusted for each film length.
, 62d as drive timings TF and TG (TDl
a, TOlb.

TDlc, D1d) (TD2a, TD2b, T
D2c, TD2d >-Et, U(TEla, TE
lb.

TE2a, TE2b,
TE2c, T[E2d)... are selected. The TF is equal to the pulse signal numerical data TM2 from the first encoder 162, and TG is the pulse signal numerical data T from the first encoder 162.
M3. TM4. TM5. TM6 was added to the TM2 (
TM2+TM3)(TM2+TM4)(T
M 2 + TM 5 ) (TM 2 +
T M 6 ).

Note that, as shown in FIG. 23, the drive timing TF
, TG adjustment, use the manual dials 74a, 74b, 74c, and 74d for setting the film presser, and adjust the dials 74a, 74b according to the film length.
, 74c, and 74d may be input to the CPU 171.

Furthermore, the CPtJ 171 reads out the drive timings TF and TG stored in the working memory 173 from the program memory 172, and reads out the drive timings TF and TG stored in the working memory 173.
F, TG each clutch brake 62a, 62b, 6
2c and 62d (drive control means).

Note that each of the drive timings TA and TB described above.

TC, TD, TE, TF, and TG are each determined according to production capacity (number of packages per minute).

Next, an outline of the actual packaging operation will be explained.

Before operation, place the item W (item stored in a tray) on the flat belt 192 of the first conveyor 190, align both guide rods 1bO with both left and right edges of the item W, and
When the handle 118 is operated to adjust the conveyor 104 to the optimal height, the film length and each clutch brake 141, 144, 147.62a, 62b, 6
2c, 62d drive timing TA, TB, TC,
T.D., T.E.

TF and TG will be determined by themselves. For example, Fig. 26<a)(
When the longest film F (film length FLI) is selected from among the short sections of films F as shown in b), (c), (d), (e), and (f), as shown in Fig. 26 (a). As shown in FIG.
It always stops between the upper and lower rollers 18 and 30).

First, when the main switch MS is pressed, the main drive motor 140 and the conveyor drive motor 193 rotate. When the main drive motor 140 rotates, the first output shaft 140a
, the second output shaft 140b and the third output shaft (not shown) rotate. The rotation of the second output shaft 140b is transmitted to the first clutch brake 141, and the main conveyance device 1A and the braking device 1B are stopped. One-step detection encoder 16
0 moves by the rotation of the first output shaft 140a, and the first encoder 162 for pulse signal detection works by the rotation of the second output shaft 140b. The rotation of the third output shaft is controlled by each clutch brake 62a, 62b, 62b of the film holding device 26,37.
62c, 62d, and each pressing part 26a, 2
The clamping by 6b, 37a, and 37b has been released. Further, the rotation of the third output shaft operates the second transport conveyor 191, the stopper member 2101, the article receiving device 46, the film folding device 76, the article unloading device 101, etc. of the article supply device 45. On the other hand, conveyor drive motor 1
The rotation of 93 also causes the first conveyor 190 of the article supply device 45 to operate.

Next, when the articles W are sequentially placed on the flat belt 192 of the first conveyor 190 while being positioned between both guide rods 150, the articles W are placed on the round belt 192 of the first conveyor 190.
98 at regular intervals. First sensor 16
5 detects this item W, the conveyor drive motor 19
3 stops, and the first conveyor 190 also stops. At this time, when the article W on the first conveyor 190 moves roughly due to the inertial rotation of the first conveyor 190 and the second sensor 166 detects the article W, the electromagnetic brake 201 operates to The conveyor 190 comes to a complete stop, and the article W also comes to a complete stop and waits at a predetermined position.

Further, the article W following this article W also stops at regular intervals.

The second conveyor 191 is driven during the operation of the packaging machine, and the stopper member 210 inside the second conveyor 191
When the electromagnetic brake 201 is deactivated and the drive motor 193 rotates, the first transport conveyor 190 is driven again, almost in synchronization with the timing when the product transfer surface 202a on the round belt 202 projects upward. The article W waiting on the first conveyor 190 is transferred onto the round belt 202 of the second conveyor 191.

The article W in the middle of movement on the circular belt 202 comes into contact with the stopper member 210, and the movement of the article W is regulated by this contact. The third sensor 167 detects this item W.

Thereafter, when the stopper member 210 retracts below the article transfer surface 202a on the round belt 202, the article W on the round belt 202 is transferred onto the round belt 207 and the stopper 47
a, and waits above the pedestal 46a of the article pedestal device 46, which is already in the lowered position. At this time, the rear folding member 77 is moved backward by the upward movement of the interlocking rod 96. Thereafter, the next item W is transferred and its movement is regulated in the same manner as in the case described above. The article holder device 46 moves up and down once while the stopper member 210 is in and out, and the article W waiting on the round belt 207 is carried to the packaging section S by this up and down movement.

During this feeding, the second sensor 166 and the third sensor 16
7 has detected the article W, at drive timing TAI in the initial step (3) shown in FIG. The rotation of the drive motor 140 is transmitted to both the roller shafts 15 and 4 of the main conveyance device 1A and the brake device 1B of the film conveyance device 1, and the head F1 of the film F is directed toward the packaging section S in the center of the main conveyance device 1A. being transported. During this process, as shown in FIG. 26(b), when the clutch of the third clutch brake 147 is connected at the drive timing TB1 and the brake is released, the saw blade support rod 43 rotates to a predetermined position on the film F. Perforations B in the width direction are formed for each length FLI. As the saw blade support rod 43 rotates, the zero rotation claw 44b cuts the photointerlurator 44a.
The clutch of the third clutch brake 147 is disengaged and the brake is applied, causing the saw blade support rod 43 to suddenly stop.

Furthermore, as shown in FIG. 26(C), this perforation B
has moved both the upper and lower roller shafts 15, 4 towards the packaging section S side by the above-mentioned indexing dimension PO, that is, at the drive timing T.
At C1, the clutch of the second clutch brake 144 is disengaged and the brake is engaged, causing the lower roller shaft 4 to suddenly stop.

Therefore, the film F held between the upper and lower roller shafts 15 and 4 is pulled in the conveyance direction A, and is cut at the perforation B by this tension.

As shown in FIG. 26(d), the separated film F
Before the package stops at the packaging section S of the main transport device 1A, that is, at drive timing TD 1, the clutch of the second clutch brake 144 is connected and the brake is released, and the paper is separated by the transport force of the main transport device 1A. At the same time, the film F that has been loaded is transported toward the packaging section S, and at the same time, the head F1 of the film F that had been stopped at the supply port P is moved in the transport direction A.
is brought out. After that, Fig. 26 (d) (e
), the separated film F is PI-PO (
When the longitudinal center of the film F reaches the center S1 of the packaging section S after being conveyed by P 1 > P O), that is, at drive timing TE 1, the clutches of the first clutch brake 141 and the second clutch brake 144 The main transport device 1 is cut off and the brake is applied.
Both roller shafts 15, 4 of A and braking device 1B suddenly stop,
The separated film F is set at the center S1 of the packaging section S, and the head F1 of the unwound film F also stops at the same time. Since this head F 1 is further fed out by the distance P 1 - P O (p 1 > p Q) together with the separated film F, it stops at the head extension dimension P 1 from the roller shafts 15 and 4.

Next, drive timing T of continuous process I shown in FIG.
Fla, T Flb, T Flc, T Fldr
, the packaging film F on the packaging section S is shown in FIGS. 8(a) and (b).
) and as shown in FIGS. 9(a) and 9(b), each pressing portion 26 of the front and rear film pressing members 26, 37 is moved upward.
a, 26b, 37a, 37b and pressure receiving plate 27.38
The packaging film F is held between the belt row M and the belt row M, and the packaging film F is prevented from coming out.

Next, when the pedestal device 46 moves upward and the item W pushes up the packaging film F, the item W is covered with the packaging film F.

Thereafter, when the interlocking rod 96 moves downward as the pedestal device 46 moves upward, the rear folding member 77 in the retreated position moves forward. Along with this forward movement, the left and right folding members 82 also approach each other. Next, when the rear folding member 77 and the left and right folding members 82 enter below the article W, and the pedestal device 46 moves downward again, the article W is placed on the rear folding member 77 and backwards under the article W. The folding operation of the packaging film F is performed from both left and right directions.

In synchronization with this folding operation, the front film holding member 26
The left and right pressing parts 26b and the rear film pressing member 37
The central pressing portion 37a and the left and right pressing portions 37b are driven at the drive timings TG1b and TGlc of the continuous process (2) shown in FIG.
, TGld, each pressing portion 26b, 37a
, 37b is released.

Thereafter, when the belt 104a is rotated and the central pressing part 26a of the front film pressing member 26 is moved down at drive timing TG1a of the continuous process I shown in FIG. is conveyed forward and transferred from the rear folding member 77 onto the front folding member 89. During the transfer, the packaging film F hits the front folding member 89 on the lower side of the item W and is folded in from the front, and the folding from the rear is overlapped with the folding from both left and right directions, and the folding from the front is further overlapped. The folding part is on the bottom side. Next, the interlocking rod 96 is moved upward again, causing the rear folding member 77 to retreat, and as the rear folding member 77 moves back, the left and right folding members 82 open from each other.

The article W to be packaged is carried out to the heater device 48, where the folded portions are brought into close contact and the packaging is completed.

When this packaging is completed, the head F1 of the packaging film F is the 26th
As shown in Figure (f), the roller shaft 15 at the supply port P
．． It is waiting at the cue dimension P1 from 4. Then, as in the case described above, FIG. 26(b) (c
) (d) (e) (f) The following packaging is performed through the actions shown in (d), (e), and (f).

Note that even if the next item W is not transferred to the second transport conveyor 191, the item receiving platform device 46 moves up and down, but the second sensor 166 and the third sensor 167 do not detect the item W, so the film F is not transported and is not packed empty.

On the other hand, Fig. 27 (a) (b) (c) (d
) (e) (f) When the longest film F (film length FL2) is selected from the long sections of films F as shown in (g), from the state shown in FIG. 27(a), At drive timing TDo of the initial step I shown in FIG. Conveying device 1A and braking device 1
Both days of B are transmitted to the axis 15°4, and the head of film F is
2 is fed out toward the packaging section S at the center of the main conveyance device ff11A. Then, as shown in FIG. 27(b'), the pivoting F2 is determined by the preliminary indexing dimension P from the roller shafts 15, 4.
Stop at 1.

After this preliminary cueing, packaging is performed in the same manner as in the case described above. In this case, Figures 24 and 26 (
a) (b) (c) (d) (e
)(f) are respectively shown in Fig. 25 and Fig. 27(b).
(c) (d > (e) <f) (g
), and PO and Pl correspond to Pl and P2, respectively, and TA 1, TB 1, TC1, T
D1, TEl, TFla, TFlblTFlc, TF
ldSTGla, TGlb, TGlc, and TGld
are respectively TA 2, TB 2, TC2, TD 2, T
E 2, TF2a, TF2b, T F1a, T F
2d, TG2a, TG2b, TG2c and T
Corresponds to G2d. If the second sensor 166 does not detect the next item W, only the preliminary cueing in the initial step (2) is performed.

Although it is ideal to change the film start-up dimension for each selected film length, as in the above-mentioned example, there is a limit to the maximum start-up dimension, and within that range, many types of films can be finely processed. Since control may be difficult due to the capacity of the film conveyance device, in reality, the cue size is set in 2 to 4 stages.

For example, two-stage cueing dimension P1. In the case of P 2, all types of films F are divided into long and short sections as described above, and the beginning dimension of the short section of film F is set as P 1. The starting dimension of the long section of film F is set as P2. Then, the drive timing TA is adjusted according to the longest film F among the short sections of films F. TB 1.
TC1, TD 1. TE 1゜TFla, TF
lb, TFlc, TFld, TG Ia, T
2. Determine Glb, TGlc, and TGld, and set the drive timing TA in accordance with the longest film F among the long sections of films F. TB 2. TC2
゜TD 2. TE 2. TF2a, TF2b,
TF2C, TF2d, TG2a, TG2b, T
Determine G2c and TG2d.

As mentioned above, both films F are always set at the center S1 of the packaging section S, but since the other film F is shorter than this film F, the longitudinal center of the other film F is the center S1 of the packaging section S. overrun. Therefore, the transport speed of the shorter film F among the other films F is slowed so that all the films F are always set at the center S1 of the packaging section S.

In particular, in this embodiment, the conveyance control of the film F and the
The presser foot control is based on preset pulse signal numerical data TM.
, drive disconnection device 141, 144, 147 based on CT
．． 62a, 62b, 62c.

62d, fine and accurate timing control is possible by appropriately changing the data TM and CT.

Furthermore, in controlling the transport of the film F, the pulse signal numerical data CT from the second encoder 163, which is activated only by the rotation of the main transport device 1A of the film transport device 1, is used. Even if there is a transmission loss to the first encoder 162, the main transport device 1A can be controlled based on the pulse signal numerical data CT corresponding to the loss. More accurate control is possible compared to control using only numerical data TM.

The second embodiment shown in FIG.
64, and the encoder 164 includes a rotary tooth plate 164b (having an uneven portion on its outer periphery) connected to the rear end of the roller shaft 4, and a rotary tooth plate 164b connected to the rear end of the roller shaft 4.
As 64b rotates, its uneven portion serves as a photointerlurator 1648 through which it passes. The first and second encoders 162, 163 and the third encoder 164 in the first embodiment constitute a pulse signal detection encoder 161. Further, the second clutch brake 144 is interlocked with the driven shaft 5 and the roller shaft 4 on the rear end side via flat belts 145 and 146, and the third clutch brake 147 is connected to the driven shaft 5 and the saw blade support rod 43. It is linked to them at the front end side via flat belts 148 and 149.

This third encoder 164 is connected to the CP as shown in FIG.
This input signal causes the CPU 171 to
A counter therein counts the number of pulse signals from the encoder 164, and the CPU 171 calculates pulse signal numerical data CT based on the detection signal from this counter (indexing means).

In the first embodiment, the first, second and third clutch brakes 141 for the film transport device 1 in FIGS. 24 and 25,
Control pulse signal numerical data TM 1 of 144 and 147
The number of pulse signals from the first encoder 162 is used as CT1. CT 2.
CT 3. CT 4. CT5 and C
The number of pulse signals from the second encoder 163 is used as T6, but in this second embodiment, only the pulse signal numerical data CT4, CT5, and CT6 for controlling the second clutch brake 144 in FIGS. 24 and 25 are used. The number of pulse signals from the third encoder 164 is used. In addition, each clutch brake 62 for the film holding device 26, 37
Control pulse signal numerical data of a, 62b, 62c, 62d TM2, TM3, TM4, TM5, T
Both the first and second embodiments have a first encoder 16 as M6.
The number of pulse signals from 2 is used.

In particular, in this second embodiment, in controlling the conveyance of the film F, the pulse signal numerical data CT from the third encoder 164, which is activated only by the rotation of the brake bag @1B of the film conveying device 1, is used. Even if there is a transmission loss from the drive motor 140 to the main transport device 1A and further from the main transport device 1A to the brake device 1B, the brake device 1B is controlled based on the pulse signal numerical data CT corresponding to the loss. This enables more accurate control than in the first embodiment.

Note that it is of course possible to use only the number of pulse signals from the first encoder 162 as all the pulse signal numerical data in FIGS. 24 and 25.

Effects of the Invention In short, according to the first invention and the second invention, the transport control of the film F and the holding control of the film F are performed by the drive intermittent device 1 based on preset pulse signal numerical data TM and CT.
41,144,147.62a, 62b, 62c
, 62d, fine and accurate timing control is possible by appropriately changing the data TM and CT.

[Brief explanation of the drawing]

Fig. 1 is a schematic sectional view showing the side surface of the orange packaging for fresh food according to this embodiment, Fig. 2 is a schematic sectional view taken along the line X-X in Fig. 1, and Fig. 3 is a packaging film conveying device. A schematic plan view of
Figures 4, 5 and 6 are partial views showing the interlocking mechanism of each clutch and brake, Figure 7 is a partial sectional view of the packaging film conveying device, Figures 8(a), (b) and 9 Figures (a) and (b) are partial sectional views showing the film clamping action by both the front and rear presser members, Figure 10 is a front view showing the front presser member, Figure 11 is a plan view of the same, and Figure 12 is the rear presser member. 13 is a plan view, and FIG. 14 is a plan view showing the operating side m+ mechanism of both the front and rear presser members.
Fig. 5 is a left side view, Fig. 16 is a right side view, Fig. 17 is a schematic plan view showing the film folding device, Fig. 18 is a partial sectional view showing the interlocking mechanism of the folding device, and Fig. 19 is a schematic plan view showing the film folding device. A side view showing the article supply device, FIG. 20 is also a plan view,
FIG. 21 is a partial sectional view showing the item height detection means;
The figure is a sectional view showing a part of it, Figure 23 is an electrical block circuit diagram, Figures 24 and 25 are time charts of each clutch and brake, and Figure 26 (a) (b) (c).
(d) (e) (f) and Figure 27 (a') (b)
(c) (d) (e) (f)
(a) is an explanatory diagram of film transport action, No. 28, respectively.
The figure is a plan view showing another embodiment of the packaging film conveying device. Film transport device 1, main transport device 1A, braking device 1
B, film pressing device 26.37, front film pressing member 26A, central pressing part 26a1 left and right pressing parts 26b, rear film pressing member 37A, central pressing part 37a, left and right pressing parts 3
7b1 Saw blade support rod 43, saw blade 43a, saw blade rotation stop means 44, photo interlubber 4481 rotation claw 44b,
Product supply device 45, product receiving device 46, clutch brakes 62a, 62b, 62c, 62d (drive intermittent device for film holding), film folding device 76, rear folding member 77, both left and right folding members 82, front folding member 89, Item delivery device 101, conveyor 104, main drive motor 140, clutch brake 141 (drive disconnection device for main conveyance device), clutch brake 144 (drive disconnection device for braking device), clutch brake 147 (drive disconnection device for saw blade), Guide rod 1501 Product width detection means 153, potentiometer 153A, rotation operation shaft 154, movement block 155, one-step detection encoder 160, pulse signal detection encoder 161, first encoder 162, second encoder 163, third encoder 164 , first sensor 165, second sensor 166, third sensor 167, microcomputer 170, CPU 171 (counter, indexing means, drive control means), program memory 172 (
storage means), packaging section S, folding section R1 packaging film F,
Product W, drive timing TA, TB, TC, TD, TE
. TF, TG, pulse signal numerical data TM, CT. Patent applicant Fujipack System Co., Ltd. Agent
Patent Attorney On 1) Hironobu Figure 4'ls5 Figure 6

Claims (1)

[Claims] 1. A film transport device (1) that cuts a band-shaped packaging film (F) into predetermined lengths and stretches the cut film (F) in a packaging section (S); A film holding device (
26, 37) and the unwrapped item (W) and move it to the packaging section (
an article receiving device (46) for transporting the unpackaged articles (W) to the article receiving device (46); an article feeding device (45) for transferring unpackaged articles (W) to the article receiving device (46); and a film stretched in the packaging section (S). (F) Goods (W)
A film folding device (76) that wraps the product (W) by folding it into a film; and a product unloading device (101) that transports the wrapped product (W).
), at least a main drive motor (140) that drives the film transport device (1), and a one-step detection device that detects one packaging step as the main drive motor (140) rotates. an encoder (160) and an output shaft (140b) of the main drive motor (140)
a pulse signal detection encoder (161) that detects a pulse signal as the motor (140) rotates; and a pulse signal detection encoder (161) that detects the pulse signal for each step based on the detection signal from the one-step detection encoder (160). A counter (1) that counts the number of pulse signals from the encoder (161) for
71), the film transport device (1) and the main drive motor (
drive intermittent device (141, 1
44, 147), and the drive intermittent device (141, 147) based on predetermined pulse signal numerical data (TM, CT) of the counter (171).
144, 147)).
B, TC, TD, TE) storage means (17)
2), an indexing means (171) for calculating pulse signal numerical data (TM, CT) based on the detection signal from the counter (171), and a pulse signal numerical value calculated by the indexing means (171). The drive intermittent device (14) for data (TM, CT)
1, 144, 147) drive timing (TA, TB,
TC, TD, TE) are read from the storage means (172), and this drive timing (TA, TB, TC, TD,
A packaging machine characterized in that it is equipped with a drive control means (171) for operating a drive intermittent device (141, 144, 147) at the TE). 2. A film conveying device (1) that cuts a strip-shaped packaging film (F) into predetermined lengths and spreads the cut film (F) on a packaging section (S); A film holding device (2) that clamps the edge of the film (F)
6, 37) and the unwrapped item (W) and move it to the packaging section (S).
), an article feeding device (45) that transfers unpackaged articles (W) to the article receiving device (46), and a film (45) spread on the packaging section (S). F) the goods (W)
A film folding device (76) that wraps the product (W) by folding it into a film; and a product unloading device (101) that transports the wrapped product (W).
), at least a main drive motor (140) that drives the film holding device (26, 37), and a step that detects one step of packaging as the main drive motor (140) rotates. A detection encoder (160) and an output shaft (140b) of the main drive motor (140)
a pulse signal detection encoder (161) that detects a pulse signal as the motor (140) rotates; and a pulse signal detection encoder (161) that detects the pulse signal for each step based on the detection signal from the one-step detection encoder (160). A counter (17) that counts the number of pulse signals from the encoder (161) for
1), and a drive intermittent device (6) for intermittent movement of the film holding device (26, 37) and the main drive motor (140).
2a, 62b, 62c, 62d), and the drive intermittent device (62a, 62b) based on predetermined pulse signal numerical data (TM) of the counter (171).
, 62c, 62d) drive timing (TF,
a storage means (172) for storing the pulse signal TG) in advance; and an indexing means (17) for calculating the pulse signal numerical data (TM) based on the detection signal from the counter (171).
1), and the drive intermittent device (62a, 6) for the pulse signal numerical data (TM) calculated by the indexing means (171).
2b, 62c, 62d) drive timing (TF, TG
) is read from the storage means (172), and the drive intermittent devices (62a, 62
drive control means (171
) A packaging machine characterized by comprising: