JPS62285831A - Adsorbing device for workpiece such as bag or the like - Google Patents

Abstract

PURPOSE:To ensure the adsorption of a bag, by attaching a retaining section to an adsorbing section so that the retaining section is movable overcoming a spring or the like, thereby the retaining force is constantly controlled irrespective of the thickness of stack of bags. CONSTITUTION:When a retaining section 9 abuts against a workpiece 100 in association with the relative movement of an adsorbing section 6, the retaining section 9 is moved by a predetermined distance overcoming the resilient force of a spring 10 or the like, and therefore the retaining section 9 actuates a switch 11 so that the relative movement of the adsorbing section 6 is stopped. In this condition, the adsorbing section 6 sucks up the workpiece 100. Thereafter, the adsorbing section 6 is moved relatively so that the workpiece 100 is taken out while the retaining section 9 is returned to its original position by the resilient force of the spring 10 or the like. When the retaining section 9 is moved by a predetermined distance from a reference position at which it abuts against the workpiece 100, the relative movement of the a sorbing section 6 is stopped, and therefore, the stopping position of the adsorbing section 6 with respect to the workpiece 100 may be made to be constant even though the thickness of stack of workpieces 100 varies, thereby it is possible to maintain the retraining force of the adsorbing section 6 at a constant value.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention Purpose of the Invention (Industrial Field of Application) This invention provides, for example, a bagging and packaging machine that places various items into bags made of resin or the like and seals the openings of the bags. This relates to the suction section (2) used for supplying the bags.

(Prior Art and Problems to be Solved by the Invention) This type of bag feeding device includes, for example, an air suction type adsorption section provided on the piston rod of an air cylinder, and bags are removed by moving the piston rod back and forth. One possible option is to absorb it and take it out. In this case, since bags are usually stacked in large numbers and have elasticity, when pressing the suction part against the bag, if the pressing force is too small, the elasticity and flexibility of the stacked bags will cause the suction part and bag to A gap is likely to be formed between the bags, and air may leak from this gap, making it impossible to reliably suction the bag. To prevent this, it is necessary to press the suction section against the bag with a pressure greater than a certain level, but if this pressing force is too large, there is a risk of damaging the bag. Therefore, it is necessary to keep the stopping position of the suction part constant at an optimum position.

However, since the laminated thickness of the bag varies, even if the stopping position of the suction part is fixed, the pressing force of the suction part against the bag is not constant. In particular, when the number of bags decreases, the pressing force becomes too small, which may cause air leakage.

Therefore, the stop position of the suction part is controlled so that the pressing force of the suction part against the bag is constant regardless of the laminated thickness of the bag.
The present invention is capable of reliably adsorbing bags.

Structure of the Invention (Means for Solving Problems) In other words, the present invention is particularly applicable to the second and third embodiments in the drawings of the embodiments described later.
4-8. As shown in Figure 42, the workpiece 1 is moved by the drive unit 4.
A suction part 6 that can move forward and backward relative to the suction part 6 is provided, and a presser part 9 biased by a spring 10 or the like is attached to the suction part 6 so as to be movable against the elasticity of the spring 1Q or the like.
When the holding part 9 comes into contact with the workpiece 100 and moves against the elasticity of the spring 10 etc. with the relative movement of the suction part 6, the swing and tip 1 are activated by the holding part 9 of the opening.
1 is attached, and a drive control means 96 is provided which acts on the drive section 4 so as to stop the relative movement of the suction section 6 based on the activation signal of the switch 11.

(Function) In the work suction device configured as described above, when the holding part 9 comes into contact with the work 100 due to the relative movement of the suction part 6, the holding part 9 is held constant against the elasticity of the spring 10, etc. After moving a distance, the switch 11 is actuated by the holding portion 9, and the relative movement of the suction portion 6 is stopped. In this state, the workpiece 100 is sucked by the suction section 6. After that, the suction part 6
move relatively and the workpiece 100 is taken out by the suction section 6, and the holding section returns to its original position due to the elasticity of the spring 10 and the like.

(Example) An example of the present invention will be described below with reference to the drawings. Note that this embodiment is embodied in a bagging and packaging machine for things such as Enoki mushrooms, which normally spread in all directions.

First, as shown in FIGS. 1 and 2, the bag feeding device A disposed on the front right side of the bag filling and packaging machine will be described in detail.

A rotating shaft 2 is supported on the front side of the machine frame 1 so as to extend horizontally in the front-back direction, and the base end of an arm 3 is fixed to the rear end as shown in FIGS. 4 and 5.

A pair of front and rear air cylinders 4 (driving portions) are fixed to a support plate 3a fixed to the tip of the arm 3, and their piston rods 4a can move forward and backward in the direction along the arm 3.

A mounting plate 5 fixed to the tips of both piston rods 4a
A first bag suction section 6 is fixed to one side of the bag. As shown in FIG. 9, this bag suction part 6 has a central bag opening suction part 7.
and suction parts 8 for bag supply on both front and rear sides, and suction surfaces 7A and 8A of each suction part 7 and 8 (piston rod 4
A plurality of suction lowers a connected to an air suction device VV 2 (see Fig. 42) are formed on one suction surface 7A of the distal end surfaces perpendicular to the advancing and retracting direction of a. Air suction device VV 1 (
A plurality of suction ports 8a are formed which are connected to the main body (see FIG. 42).

On the other hand, on the other side of the mounting plate 5, a holding plate 9 (holding part) is installed next to the first bag suction part 6, and male screws 9a fixed to both the front and back sides of the holding plate 9 are attached to the mounting plate 5. The male threaded rod 9a is movably inserted therethrough, and a stopper nut 9b that is locked onto the mounting Fi5 is screwed into the male threaded rod 9a. A compression coil spring 10 is wound around this male threaded rod 9a between the mounting plate 5 and the presser foot 9, so as to urge the presser plate 9 in the forward direction of the piston rod 4a.

The elastic force of the compression coil spring 10 with respect to the presser plate 9 can be adjusted by changing the position of the stopper nut 9b. Note that this presser plate 9 always projects slightly in the forward direction of the piston rod 4a than the suction surfaces 7A, 8A of the first bag suction section 6. Further, a limit switch 11 is attached to the mounting plate 5, and a presser plate 9 is attached as shown in FIGS.
When moves against the elastic force of the compression coil spring 10,
An operating lever 11a of the limit switch 11 is pushed by an operating plate 12 fixed to one male threaded rod 9a.

Below the rotating shaft 2, a bag storage case 13 is horizontally attached to the front side of the machine frame 1. This bag storage case 13
consists of a left wall portion 13a that is fixed immovably, and both front and rear walls 13b and right wall portion 13c that are movably fixed, and the upper side thereof is open. This storage case 13
Inside, the bags 100 are stacked vertically with their openings 101 aligned with the left wall 13a, and the positions of both the front and rear walls 13b and the right wall 13c are adjusted according to the size of the bags 100. It is now possible to do so. A weight plate 14 is supported on the right wall portion 13c so as to be rotatable in the vertical direction, so that the bag 100 in the storage case 13 can be pressed from above.

In the bag supply device @A configured in this way, the arm 3 is placed in a vertical bag supply position P as shown in FIGS. 2.4 to 8.
1, the first bag suction section 6 is located above the storage case 13 and corresponds to the opening 101 of the bag 100, and the presser plate 9 is also located on the right side of the first bag suction section 6, and similarly holds the bag 100.
It is located above. The bag supply device A reciprocates between this bag supply position P1 and a bag release position P2 where the arm 3 is rotated 90 degrees to the left together with the rotation shaft 2 and becomes horizontal as shown in FIG. It has become.

Next, as shown in FIGS. 1 to 3.10, the bag mouth opening device B disposed on the front left side of the bag filling and packaging machine will be described in detail.

A guide shaft 15 is supported on both front and rear sides of the machine frame 1 so as to extend horizontally in the front and rear directions, and as shown in FIG. ing. As shown in FIG. 12, a pair of upper and lower guide rollers 17 are attached to the left side of the slider 16, and the slider 16 is sandwiched between a pair of front and rear guide rails 18 fixed to the left side of the machine frame 1. It is possible to move forward or backward.

An air cylinder 20 is fixed to a bracket 19 fixed to the right side surface of the rear slider 16, and its piston rod 20a can move forward and backward in the left and right directions. At the tip of this piston rod 20a, there is a second suction part 2 for opening the bag.
1 is fixed, and a guide rod 22 fixed to the second bag suction section 21 is movably inserted through the bracket 19. The suction surface 21A (the right side surface perpendicular to the forward and backward direction of the piston rod 20a) of the second bag suction section 21 has a plurality of suction ports 21a (see Fig. 23) connected to the air suction device VV2 (see Fig. 42). ) is formed. Incidentally, this air suction device VV2 is also used for suctioning the central suction section 7 of the first bag suction section 6.

As shown in FIGS. 10 and 14(b), the suction surface 21A of the second bag suction section 21 is the suction surface 7A of the central suction section 7 when the first bag suction section 6 is in the bag opening position P2. It is designed to face.

A support plate 23 is fixed on both sliders 16 so as to protrude to the right, and a pair of left and right levers 2 are attached to the tip side of the support plate 23.
4 is supported at its center by a shaft 24a so as to be rotatable in the horizontal direction. At both front and rear ends of both levers 24, links 25, 26 are connected to shafts 25a, 2 on both front and rear sides of the support plate 23.
6a, and by this support plate 23, both levers 24, and links 25, 26, those @24
a.

A four-bar parallel link mechanism is constructed between 25a and 26a. Right end Niha clamp portions 27a, 27b, 28a of both links 25, 26 on both front and rear sides, respectively.

28b are formed to face each other, and both clamp parts 27a, 2
7b constitutes a front side clamp 27, and both clamp parts 28a and 28b constitute a rear side clamp 28.
is configured. One link 25 is biased to the right by a compression coil spring 29, and its elastic force causes both the front and rear clamps 27, 28 to always close above both the front and rear sides of the second suction section 21. Tube clamp 2
The surface connecting 7°28 is the opening center G of the bag 100.

An engagement roller 30 is attached to the left end of one link 25. Further, an air cylinder 31 is fixed to the left side of the machine frame 1, and its piston rod 31a can move forward and backward in the left and right directions. An engagement plate 32 is fixed to the tip of the piston rod 31a, and can engage with the right side of the engagement roller 3o of the one link 25. When the piston head 31a retreats, both the engagement rollers 30 are pushed to the left by the engagement plate 32, as shown in FIG. Move to the left. This movement causes both levers 24 to rotate, the other link 26 to move to the right, and the front and rear cylinder clamps 27; 28 to open in the left-right direction.

On the other hand, as shown in FIG. 11, inside the support shaft 33 rotatably supported on the left side of the machine frame 1, a lever 34 is fixed at its center, and at both ends and on the left side of the front and rear cylinder slider 16. A link 35 is connected between the two. This support shaft 33
A lever 36 is fixed to the outer end of the frame 1, and a piston rod 37a of an air cylinder 37 fixed to the left side of the machine frame 1 is connected to the lever 36. When the piston rod 37a moves forward as shown in FIG.
5 to both sliders 16, and both sliders 1
6 are spaced apart from each other in the front-back direction. Conversely, when the piston rod 37a retreats, both sliders 16 approach each other in the front-rear direction.

Therefore, the second bag suction part 21, the air cylinder 20, etc. reciprocate in the front and back direction, and the front and rear cylinder clamps 27°28 and a part of its opening/closing mechanism 23.24.25°26.29.30
reciprocate in the front and back direction so as to approach and separate from each other.

Next, as shown in FIG. 1.3, the bag bottom sealing device C disposed at the rear of the bag filling and packaging machine will be described in detail.

A guide shaft 38 is supported between the left and right sides of the machine frame 1 so as to extend horizontally in the left and right direction, and a slider 39 is fitted on both left and right sides thereof so as to be movable in the axial direction. A pair of upper and lower guide rollers 40 are attached to the rear surfaces of both sliders 39, and can be moved in the left-right direction while sandwiching a guide rail 41 supported against the machine frame 1 parallel to the guide shaft 38. It has become.

As shown in FIGS. 15 and 16, an accommodating portion 42 is fixed to the lower surface of both sliders 39, and seal portions 43 and 44 are fitted into the accommodating portion 42 so as to be movable in the left-right direction. A heater is built into one seal portion 43, and this seal portion 43 serves as a heater portion. Both seal parts 43
．． 44 faces each other at their gripping edges 43a and 44a, and the first
As shown in FIG. 7, they are always urged toward each other by a compression coil spring 45. Air cylinders 46 and 47 are fixed to the left and right sides of the machine frame 1, and their piston rods 46a and 47a can move back and forth in the left and right directions. Piston rod 46a of left air cylinder 46
is fixed to the left housing part 42, and the piston rod 47a of the right air cylinder 47 is fixed to the right housing part 42.
It is fixed at 2. And both piston rods 46a
, 47a are retracted, both seal parts 43, 44 open to each other. Conversely, when the piston rods 46a, 47a move forward, the seal portions 43, 44 close each other and come into contact with their clamping edges 43a, 44a, and are pressed against the piston by the elastic force of the compression coil spring 45.

Note that both seal portions 43 and 44 are located at the same height as the front and rear cylinder clamps 27 and 28 of the bag opening opening device B.

Next, the bag moving device D (see FIG. 1.3) that reciprocates between the bag opening opening device B and the bag bottom sealing device C will be described in detail.

A slider 48 is fitted to the rear side of the guide shaft 15 of the bag mouth opening device B so as to be movable in the axial direction. 1st
As shown in FIG. 8, a pair of front and rear guide shafts 50, 51 are supported on a bracket 49 fixed to the slider 48 in parallel with each other so as to extend horizontally in the left-right direction.

A pair of upper and lower guide rollers 53 are attached to a bracket 52 fixed to the right ends of both guide shafts 50 and 51, which sandwich a guide rail 54 supported between the front and rear sides of the machine frame 1 parallel to the guide shaft 15. In contrast, it is possible to transfer in the forward and backward directions while holding the position.

Sliders 55 and 56 are fitted onto both guide shafts 50 and 51 so as to be movable in the axial direction. A pair of upper and lower guide rollers 57 are attached to the rear surface of the slider 55 on the front guide shaft 50, and the guide rollers 57 sandwich the guide rail portion 51a formed on the rear guide shaft 51 and move in the left-right direction relative to the guide rail portion 51a. Transfer is possible. In addition, a pair of upper and lower guide rollers 5 is provided in front of the slider 56 on the rear guide shaft 51.
8 is attached to the guide shaft 50 so that it can be moved in the left-right direction while sandwiching the guide rail portion 50a formed on the guide shaft 50 on the front side.

There is a shutter part 59.60 on both sliders 55.56
are fixed so as to protrude forward, and their clamping edges 59
．． a, facing each other at 60a. Air cylinders 61 and 62 are fixed to both front and rear sides of the bracket 49 of the slider 48, and their piston rods 61a and 62a can move back and forth in the left and right directions. Front piston rod 6
1a is fixed to the front slider 55, and the rear piston rod 62a is fixed to the rear slider 56. When the front piston rod 61a moves forward and the rear piston rod 62a retreats, both shutter parts 59 and 60 open each other. Conversely, when the front piston rod 61a retreats and the rear piston rod 62a moves forward, both shutter portions 59, 60 close together and their clamping edges 59a, 60
a comes into contact. The shutter portions 59 and 60 are located below both seal portions 43 and 44 of the bag bottom sealing device C, and are connected to the front and rear cylinder clamps 27 and 28 of the bag mouth opening device B. It is located at the same height position as the suction part 21.

As shown in FIG. 19, a lever 63 is supported below the slider 48 on the guide shaft 15 so as to be tiltable in the front-rear direction, and its upper end is connected to the slider 48 via a link 64. A cam roller 65 is attached to the lower end of this lever 63, and is pressed against a main cam 66 which is rotatably supported adjacent to this lever 63 by a tension coil spring 67. This main cam 66 is interlocked with a main motor M via a chain 66a.

When the lever 63 swings back and forth as the main cam 66 rotates, the slider 48 reciprocates along the guide shaft 15. As a result, both shutters have a part of 59.6
0 is the bag bottom sealing device C as shown in FIGS. 3 and 40.
and the lower position of the clamps 27, 28 of the bag mouth opening device B.

This lever 63 is connected to the link 6 as shown in FIGS.
8. The levers 69a, 69b are linked to the rotating shaft 2 of the bag feeding device A through the link 70 and the lever 71, and when the rotating arm 3 is at the bag feeding position P1, the shutter portions 59 and 60 are When the rotating arm 3 is in the bag opening position IP2, the shutter portions 59 and 60 are located in the bag bottom sealing device C.

Next, as shown in FIGS. 1 to 3, the bag mouth opening device B
The bag deaeration nozzle insertion/removal device E located above the bag will be described in detail.

A support frame 72 is attached to the machine frame 1 above the rear clamp 28 of the bag mouth opening device B, and
A guide rod 73 is erected at the center of the support frame 72 in the left-right direction, and a block 74 is fitted to the lower end of the guide rod so as to be movable up and down. An intake nozzle 75 extending downward is attached to the lower surface of this block 74, and an air suction device V
It is connected to V3 (see Figure 42). The support frame 7
An air cylinder 76 is fixed to the right side of the cylinder 2, and its piston door 6a can move forward and backward in the vertical direction. The lower end of this piston rod 76a is connected to the block 74.

Also, a portion of both shutters of the bag transfer ILJ device is 59°60°.
As shown in FIGS. 18.34 to 39, notches 77 are formed in the gripping edges 59a and 60a of the shutters 59a and 60a, respectively, so as to face each other. An elastic body 78 is attached. The elastic bodies 78 are adapted to come into contact with each other when the shutter parts 59 and 60 are closed, thereby closing the gap 9 formed by the notches 77. When the shutter portions 59, 60 are located below the front and rear clamps 27, 28 of the bag opening device B, the notches 77 are located closer to the rear clamp 28, and the notches 77 are located closer to the rear clamp 28. The intake nozzle 5 is located directly above the center between the notches 77, and as the piston door 6a of the air cylinder 76 moves forward, both shutters partially 59.60
It is designed to descend downward.

Next, as shown in FIGS. 1 to 3, the article feeding device F located above the bag mouth opening device @B will be described in detail.

A pair of upper and lower blocks 80 are fitted to the upper part of the guide rod 73 of the bag deaeration nozzle insertion/removal device E above the front and rear clamps 27° 28 of the bag mouth opening device B so as to be movable up and down in the vertical direction, A mounting plate 8] is fixed to the front surfaces of both blocks 80. A cylindrical article supply tube 82 with open upper and lower ends is attached to the front surface of the mounting plate 81, and an article input port 83 is formed at the lower front side of the tube. At the lower end of this article supply tube 82, a lower end of a lid tube 84 having a semi-circular arc cross section is supported by a shaft 85 so as to be rotatable in the front and back direction in correspondence with the article input port 83. The article input port 83 can be opened and closed. This lid tube 84
Both ends of the M cylinder 84 are overlapped with the outer surface of the product supply cylinder 82, and a lining part 84a is fixed to the inner surface of the M cylinder 84. This eliminates the difference in level between the inner surface of the lid tube 84 and the article input port 83 when the lid tube 84 is in the closed state. A pair of left and right guide rollers 86 are attached to the front surface of the lid cylinder 84, and are movably supported on a pair of left and right guide rails 87 attached to the machine frame 1.

An air cylinder 88 is fixed to the support frame 72 of the bag air nozzle insertion device E, and its screws 1 to 88a
can move forward and backward in the vertical direction 7\.

The upper end of this piston rod 88a is connected to the upper block 80 of the mounting plate 81.

An air cylinder 89 is fixed to the upper side of the mounting plate 81, and its lower half is inserted into the upper part of the product supply cylinder 82. The piston rod 89a at the lower end can move forward and backward in the vertical direction, and the lower end has an elastic buttress 9.
0 is attached.

Below a drop opening 91 formed at the lower end of the product supply tube 82, a pair of left and right tongue pieces 92 are supported by a shaft 93 so as to be rotatable in the vertical direction and are biased upward by a tension coil spring 94. The tips 92a of the pieces 92 are opposite to each other below the drop opening 91. Drop opening 9 of the article supply tube 82
The peripheral edge of 1 can come into contact with both tongue pieces 92 as it descends.

Next, the electrical configuration of the bagging and packaging assembly configured as described above will be described.

In FIG. 42, a microcomputer 95 includes a central processing unit (hereinafter referred to as CPU) 96, a program memory 97 consisting of a read-only memory (ROM), and a working memory consisting of a readable and replaceable memory (RAM). 98, and is built in a control box (not shown) provided in the bagging and packaging machine.
The CPU 96 operates based on a control program stored in a program memory 97.

In the figure, MS is the main switch for starting the cycle, LSO
is a cycle stop limit switch, LSI and LSI
- Also, the limit switch 11 of the bag feeding device A is a limit switch for controlling the air cylinder 4 (SVl) of the solid HA, and LS2 is a limit switch for controlling the air cylinder 31 (SV2) between the bag opening t1 and the loading f3. Switch, LS3 is a limit switch for controlling the air cylinder 37 (S3) of the device B, LS4 is a limit switch for controlling the air cylinder 20 (SV4) of the device B, LS
5 is the air cylinder 61.62 (S
V5, SV5') control limit switch, LS
O is the air cylinder 46, 47 of the bag bottom sealing device C.
(SV6, SV6-) For ノ1llllll! J
The limit switch LS7 is a limit switch for controlling the air cylinder 88 (SV7) of the article supply device F;
LS8 is air cylinder 89 (SV8'') of the same device F.
LS9 is a limit switch for controlling the air cylinder 76 (Sv9) of the bag deaeration nozzle insertion/removal device ff1E, LSll is a limit switch for controlling the air suction device VV1 of the bag supply device A, L S
I2 is a limit switch for controlling the air suction device VV2 of the device A and the bag mouth opening device 8, LSI3 is a limit switch for controlling the air suction device VV3 of the bag deaeration nozzle insertion/removal device E, Each is input to the CPU 96. These limit switches LSO, LS
I.

LSI-, LS2, LS3, LS4, LS5,
L36, LS7, LS8, LS9, LSll,
LSI2゜LSI3 is installed as a limit switch group LS as shown in Fig. 19, and is connected to the main motor M.
Each of the nine cam plate groups is operated via a chain 66a.

Next, the operation of the bag filling and packaging machine will be explained in detail. In this embodiment, the bag is degassed at the same time as the bag is supplied, and the bag opening is opened and the bag opening is sealed at the same time when the item is supplied. Therefore, two bags are processed at the same time, but for convenience of explanation, the bagging operation for one bag will be described.

Figure 2.4.5 shows the bag feeding device A with its rotating arm 3 at the bag feeding position P1 and the air cylinder 4 (S
The piston rod 4a of (Vi) retreats and the first bag suction section 6 rises, and only the suction sections 8 on both sides are connected to the air suction device VV.
1 indicates a state of being sucked.

From this state, when the limit switch LSI is activated, the piston rod 4a of the air cylinder 4 (SVl)
moves forward, and the presser plate 9 and the first bag suction section 6 descend. As a result of this lowering, the presser plate 9 first comes into contact with the laminated bag 100 inside the storage case 13, as shown in FIG. 6.7, and is lifted against the bias of the compression coil spring 1o. Next, the first bag suction section 6 also comes into contact with the opening 101 of the laminated bag 100, and as shown in FIG. 101b is sucked and the opened bag OO is sucked into the first bag suction section 6. Further, the holding plate 9 and the first bag suction unit 6 are pressed against the uppermost bag 100, and when the limit switch 11 is operated by the operating plate 12 of the holding plate 9, the air cylinder is activated as shown in FIG. 4 (SVI) piston rod 4afJ (
It retreats, and the presser plate 9 and the first bag suction section 6 rise. Due to this rise, the uppermost bag 100 is attracted to the both side suction parts 8 of the first bag suction part 6 and lifted. The presser plate 9 returns downward due to the elastic force of the compression coil spring 10, and its actuating plate 12 separates from the actuating lever 11a of the limit switch 11.

After this state is maintained for a short time, the rotating arm 3 of the bag supply device A begins to rotate from the bag supply position P1 to the bag release position P2. By the time the rotating arm 3 reaches the bag opening position P2, the limit switch LSI is activated and the air cylinder 4
(SVi) moves forward, and the 10th piston rod 4a moves forward.
As shown in the figure, a bag 100 is supplied to a bag mouth opening device 1B. Also, the limit switch LSI2 is activated, and the central suction section 7 of the first bag suction device 6 is also activated by the air suction device VV2.
The central part of the opening 101 of the bag 100 is also attracted by the suction lower a.

On the other hand, in the bag opening device B, before the rotating arm 3 reaches the bag opening position P2, the limit switch LS
4 is actuated, the piston rod 20a of the air cylinder 20 (SV4) moves forward, and the second suction part 21 moves forward to face the first bag suction part 6, as shown in FIG. At this time, both the clamps 27.
28 are open to each other at the farthest position H. Then, this second suction section 21 clamps the left and right sides 101a of the opening 101 of the bag 100 between it and the first bag suction section 6, and a limit switch LSI 2 is created and the second suction section 2
1 is also sucked by the air suction device VV2, and its suction port 2
The central part of the opening 101 of the bag 100 is suctioned by the bag 100 and is suctioned by the second suction part 21 .

Immediately after that, the limit switch LS2 is activated to move the piston rod 31a of the air cylinder 31 (SV2) forward, and both the front and rear clamps 27, 28 are closed, and the limit switch LS3 is activated to move the air cylinder 37 forward.
(SV3) When the piston rod 37a retreats and both the front and rear clamps 27.28 approach, the pair of clamp portions 27a of the front and rear clamps 27.28 close together, as shown in FIG. 14(b).

27b, 28a, and 28b move obliquely inward and clamp both front and rear sides 101b of the opening 101 of the bag 10o inside the farthest position H, and the second suction part 21 moves against the first bag suction part 6. The bag 1 is shifted forward with respect to the central suction part 7.
Both left and right sides 101a of the mouth part 101 of 00 are shifted from each other.

Subsequently, as shown in FIG. 14(C), both the front and rear clamps 27 and 28 approach each other, and the second suction portion 21 similarly shifts. As a result, bag 1
There is a slack in the opening 101 of 00 for opening the bag.

Then, the limit switch LS11 is activated to stop the suction of the air suction device vV1, and only the suction of the both side suction parts 8 of the first bag suction part 6 is stopped. In addition, limit switches LSI' and LS4 are activated, and air cylinder 4 (S
Vl) piston rod 4a and air cylinder 20 (
The piston rod 20a of the SVl, ) moves back, and the first bag suction part 6 and the second suction part 21 move back, and the central suction part 7 and the second suction part 21 move back. As a result, both left and right sides 101a of the opening 101 of the bag 100 are opened. Immediately after that, cycle stop limit switch LS
O is activated, and the main motor M is stopped, and the main cam 66 and the like are also stopped.

Next, as shown in FIG.
It stops due to After confirming this, the main switch MS
When the main motor M is turned on, the main motor M is driven again, and the main cam 66 and the like are also driven.

Thereafter, the limit switch LS 7 is activated and the piston rod 88a of the air cylinder 88 (SV7) of the article supply device F is lowered, and the 2-4. As shown in FIG. 75 descends. Due to this lowering, the input port 83 of the product supply cylinder 82 is closed by the lid cylinder 84.
The interior of the product supply tube 82 corresponding to the input port 83 is narrowed, and both tongue pieces 92 are pushed down by the product supply tube 82 and open from each other. On the other hand, the intake nozzle 75
00 through its mouth 101. The opening 101 of the bag 100 can be reliably opened by the tongue pieces 92. Immediately after that, the limit switch LS8 is activated, the piston rod 89a of the air cylinder 89 (SV8) of the device F is lowered, and the pusher 9° is lowered as shown in FIG. 26.27. The product W naturally falls from the drop opening 91 of the product supply tube 82 due to the contact of both tongue pieces 92, and is pushed down by the pusher p-90, and the product W falls down from the drop port 91 of the product supply tube 82.
It is supplied into the bag 100 through its opening 101 while being contracted and guided between the inner and both tongue pieces 92.

Next, the limit switches LS7 and LS8 are operated, and the piston rod 88 of the air cylinder 88 (SV7) is activated.
a and the piston rod 89a of the air cylinder 89 (SV8) rise, and the article supply tube 82 and pusher 90 rise as shown in FIGS. 28 and 29. Due to this rise, the input port 83 of the article supply cylinder 82 is opened, and
Both tongue pieces 92 are closed by the elasticity of the tension coil spring 94.

On the other hand, the intake nozzle 75 remains in a lowered state. The suction of the central suction part 7 of the first bag suction part 6 and the second suction part 21 has already been stopped by the operation of the limit switch LSI2, and the suction of the air suction device VV2 has been stopped by this time. The mouth portion 101 is suspended only by both front and rear clamps 27,28.

Next, the limit switch LS5 is activated, and the screw rod 61a of the air cylinder 61 (SV5) of the bag moving device moves forward, and at the same time, the air cylinder 62 (SV5)
- the piston rod 62a of ) moves back, both shutter parts 59, 60 open to each other, and then both shutter parts 59, 60 open to each other.
．． 60 begins to move from the position of the bag bottom sealing device C to the position of the bag mouth opening device B. At the same time, bag supply device A
The rotating arm 3 begins to rotate from the bag opening position P2 to the bag supplying position P1.

Next, by the time the rotating arm 3 reaches the bag supply position @P1,
Limit switch LS3 is activated and bag opening opening device B
Air cylinder 37 (SV3 > Piston rod 3
7a moves forward, and as shown in FIG. 30.31 and FIG. 101 is tensioned, the second bag suction section 21 moves rearward, and the central suction section 7 of the first bag suction section 6
corresponds to Further, the limit switch LS5 is activated, and the piston rod 61a of the air cylinder 61 (SV5) of the bag moving device is moved backward, and the air cylinder 62 (
The piston rod 62a of the 32nd
．． As shown in FIG. 33, both shutter parts 59 and 60 close together in the bag opening device B. When both shutter parts 59.60 are closed, the opening 10.1 of the bag 100 is clamped between the clamping edges 59a and 60a of both shutter parts 59.60, and as shown in FIGS. The intake nozzle 75 enters between the notches 77 of the shutter parts 59 and 60 and is held between the elastic bodies 78, thereby closing the gap 79 between the notches 77. Therefore, the opening 10 of the bag 100
1 is sealed.

When the rotating arm 3 reaches the bag supply position P1, the limit switch L S 13 is activated and the air suction device V3 starts suctioning the suction nozzle 75, bringing the inside of the bag 100 into a nearly vacuum state. Further, the limit switch LS11 is activated, and the both side suction parts 8 of the first bag suction part 6 are suctioned by the air suction device V1.

Before the rotation arm 3 starts to rotate from the bag supply position P1 to the bag release position P2, the limit switch L S 9 is activated and the air cylinder 76 of the bag deaeration nozzle insertion device E is activated.
The piston rod 76a of (SV9) rises, the intake nozzle 75 moves upward, and the limit switch L S
I3 is activated, the suction of the air suction Hfff1VV3 is stopped, and the suction of the intake nozzle 75 is stopped. Due to this rise, as shown in FIGS. 37 to 39, the intake nozzle 75
escapes from the notches 77 of both shutter parts 59 and 60, and at this time both elastic bodies 78 close rapidly, the gap 79 between both notches 77 is closed, and there is no risk of air leaking into the bag 100. Also, the limit switch LS2 is activated and the piston rod 31a of the air cylinder]1 (SV2) is activated.
moves back, and both the front and rear clamps 27.2 of the bag opening device B
8 is opened, and the opening 101 of the bag 100 is closed to both shutters 59.
．． It is suspended only by 60.

By the time the rotating arm 3 reaches the bag opening position P2, both shutter parts 59 and 60 of the bag moving device have moved backward and are located at the bag bottom sealing device C, and the limit switch LS6 has been activated. Air cylinder 46 (SV6) of the device C
, 47 (SV6-) (D piston rod 46a, 47
a moves forward, and as shown in FIGS. 40 and 41, both seal parts 4
3 and 44 are closed together, and the opening 101 of the bag 100 is clamped by the clamping edges 43a and 44a. This state continues until the product supply cylinder 82 and the button shear 90 rise.
During this time, the opening 101 of the bag 100 is sealed by heat.

When this seal is completed, the limit switch LS6 is activated and the air cylinders 46 (SV6) and 47 (SV61
The piston rods 46a, 47a of the piston rods 46a, 47a are retracted, and both seal portions 43, 44 are opened to each other. After that, both shutters part 59
．． 60 open each other and the bag 100 falls, completing bagging.

In this way, one process of bagging is completed, but in this embodiment, the supply of the bag 100 and the degassing of the bag 100 are performed simultaneously, and the mouth 101 of the bag 100 is opened and the article W is supplied. and sealing of the opening 101 of the bag 100 are performed at the same time. Therefore, the bagging process using the preceding bag 100 and the subsequent bag 1
The bagging process by 00 proceeds simultaneously.

Note that this embodiment can also be configured as follows.

(a) In the bag supply device A, the first bag suction section 6, presser plate 9, etc. are fixed to the arm 3, and the bag storage case 13 can be raised and lowered.

(B) As the work 100, in addition to tearing resin, paper, etc.
Stack sheets.

Effects of the Invention In short, according to the present invention, the relative movement of the suction part 6 stops when the presser part 9 moves a certain distance from the reference position where it contacts the workpiece 100. Even if the laminated thickness of the workpiece 100 varies, the relative stop position of the suction section 6 to the workpiece 100 is constant, and the pressing force of the suction section 6 to the workpiece 100 is constant.

Therefore, the workpiece 100 can be reliably attracted without being damaged.

[Brief explanation of drawings]

FIG. 1 is a plan view showing a state in which bag feeding and bag deaeration are performed simultaneously in the bag filling and packaging machine according to the present embodiment, and FIG. 2 is a view taken from the X 1-X 1 line in FIG. 1. Partial sectional view, 3rd
The figure is a partial cross-sectional view taken along the line X2-X2 in Figure 1, and Figure 4 is a section of the bag supply 'IA' position showing the bag filling and packaging machine in the state shown in Figure 1 before bag suction. Enlarged front view, No. 5
The figures are also a partially enlarged right side view, Fig. 6 is a partially enlarged front view of the bag supply device showing a state in the middle of bag suction, Fig. 7 is a partially enlarged right side view, and Fig. 8 is a partially enlarged right side view after bag suction. FIG. 9 is a partially enlarged front view of the bag feeding device showing the state; FIG. 9 is a partially enlarged view showing the suction surface of the bag suction unit of the bag feeding device; FIG. Fig. 11 is a partial cross-sectional view of the bag filling and packaging machine showing a state in which sealing and sealing are performed simultaneously.
A partially enlarged plan view showing the bag opening device of the bag filling and packaging machine in the state shown in the figure, FIG. 12 is a partially enlarged left side view, and FIG. 13 shows a state in which the clamp of the bag opening device is opened. 14 (a) to (e).
) is an explanatory view showing the bag opening action in this bag mouth opening device, FIG. 15 is a partially enlarged plan view showing the bag bottom sealing device in the bag filling and packaging machine in the state of FIG. 1, and FIG.
17 is a partially enlarged plan view, FIG. 18 is a partially enlarged plan view showing the bag moving device of the bag filling and packaging machine in the state shown in FIG. 1, and FIG. 19 is a partially enlarged plan view. A partially enlarged right side view showing the reciprocating mechanism of the bag moving device and an interlocking mechanism between the bag moving device and the bag supply device, FIG. 20 is a partially enlarged plan view showing the interlocking mechanism, and FIG. 21 is also partially enlarged. 22 is a front view, and FIG. 22 is a partial cross-sectional view of the bag degassing nozzle insertion/removal device and product supply device of the bag filling and packaging machine in a state immediately before supplying products, as seen from the front; FIG.
The figure is also a partial sectional view seen from the right side, FIGS. 24 and 25 are partial sectional views showing the lowered state of the product supply tube and the intake nozzle in these devices, and FIGS. 26 and 27 are similar to the pusher. FIG. 28 and FIG. 29 are partial sectional views showing the state in which only the product supply tube and the bushing are raised, and FIG.
31 and 31 are also partial sectional views showing a state in which a part of the shutter of the bag moving device is located in the bag mouth opening device, and FIG.
33 is a partial cross-sectional view showing a partially closed state of the shutter, FIG. 34 is a partially enlarged plan view of a portion of the shutter in the state shown in FIGS. 32 and 33, and FIG. 35 is a partially enlarged plan view of a partially closed shutter. 36 is a sectional view taken along the Y1-YI line in the figure.
4 is a sectional view taken along the Y2-Y2 line; FIG. 37 is a sectional view showing a state in which the intake nozzle is about to rise from the state shown in FIG. 35;
Fig. 38 is a partial enlarged plan view of a part of the shutter showing a state in which this intake nozzle is fully operated, and Fig. 39 is a partial enlarged plan view of the shutter shown in Fig. 38.
1-2i line sectional view, FIG. 40 is a partial sectional view of the bag filling and packaging machine showing a state in which a part of the shutter of the bag moving device is located in the bag bottom sealing device, and FIG. A sectional view taken along the Z-2 line and FIG. 42 are electrical block circuit diagrams of the bag filling and packaging machine according to this embodiment. Bag supply device @A, arm 3, air cylinder 4 (drive part),
- No. 1 bag suction section 6, center suction section 7, both side suction sections °8, holding plate 9 (holding section), compression coil spring 10, limit switch 11, bag mouth opening device B1 air cylinder 20. Second bag suction part 21, support plate 23, lever 24, links 25, 2
6, clamp 27, 28, compression coil spring 29, engagement roller 30, air cylinder 31, engagement plate 32, support shaft 33,
Lever 34, link 35, lever 36, air cylinder 3
7. Bag bottom sealing device C1 sealing portion 43, 44, air cylinders 46, 47, bag moving device D1 shutter part 59.
60 (clamping member), air cylinder 61, 62, bag deaeration nozzle insertion/removal device E1 intake nozzle 75, air cylinder 76
, notch 77, elastic body 78, gap 79, article feeding device F
1 item feeder 82, item input port 83, lid tube 84, guide rail 87, air cylinder 88, 89, butcher 90
゜Drop port 91, tongue piece 92, tension coil spring 94, CPU
96 (drive control means), bag 100, mouth 101° Patent applicant Fuji Pack System Co., Ltd. Agent
Person Patent Attorney On 1) Hironobu Figure 4 Figure 5 Figure 6 Figure 0 Figure 7 Figure 8 Figure 9 Figure 61b '1 Figure 12 Figure 13 Figure 18 D, Figure 21 Figure 19 Figure 20 Figure 23 Figure 241 Figure 25 Year≠1 Figure 26 Figure 27 Figure 28 Figure 29 Figure 80 Prisoners Figure 81 Figure 82 Figure 83 Figure 85 Figure 86 Figure 37 Figure 88 Figure 39

Claims (1)

[Claims] 1. A suction part (6) is provided that can move forward and backward relative to the workpiece (100) by a drive part (4), and this suction part (6) is biased by a spring (10) or the like. The presser part (9) is mounted so as to be movable against the elasticity of its spring (10), and the presser part (9) is attached to the workpiece (100) as the suction part (6) moves relative to the other. A switch (11) is installed which is activated by this holding part (9) when it comes into contact with the holding part (9) and moves against the elasticity of a spring (10), etc., and the suction part (6) is activated based on the activation signal of this switch (11). ) A suction device for a workpiece such as a bag, characterized in that a drive control means (96) is provided that operates on the drive section (4) so as to stop the relative movement of the objects. 2. The suction device for a workpiece such as a bag according to claim 1, wherein the suction part (6) is provided with air suction ports (7a, 8a). 3. The suction device for a workpiece such as a bag as set forth in claim 1, wherein the drive section (4) is an air cylinder, and the suction section (6) is attached to the piston rod (4a) thereof.