JPH092435A - Driving device in making of bag - Google Patents

Abstract

PURPOSE: To enable to produce bags rapidly, make the device minutely adjustable to produce the bags with favorable results, and extend the service life of the bag-making apparatus. CONSTITUTION: A driving bar 21 provided substantially parallel to a frame 19 is supported by the frame 19 in a manner of being capable of rocking motion with a connecting link 22 therebetween. A sealing device 7 is provided, which is attached to the driving bar 21 with the interposition of a slider 26 therebetween in a setup to convert the rocking motion of the driving bar 21 through the slider 26 to up-and-down movement of the sealing device 7. A driving link 23 one end of which is rotatably supported by the frame 19 is rotatably connected with one end of the driving bar 21 and the other end of the driving link 23 is connected to a rotating arm 25 by a rod 24. As a result, a bag can be produced properly by minutely adjusting the length of connection of the connecting link 22 and by adjusting the extent H to which the sealing device 7 is moved up and down; furthermore the service life of the sealing device 7 can be extended though moderation of shocks and the production of bags can be performed rapidly at a rate proportional to the rate of rotation of the rotating arm.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is capable of producing a bag for packaging at a high speed, enables fine adjustment to perform an excellent bag production, and drives a bag production machine having a long useful life of a bag production apparatus. It relates to the device.

[0002]

2. Description of the Related Art First, an outline of an automatic packaging machine will be described with reference to FIG. For example, a roll 1 made of a vinyl sheet, which is a material for making a bag, is rolled into a roll 2 from a roll 1
The sheet 3 is unwound with, the necessary printing 4 such as the product name and the manufacturer's name is printed on the unwound sheet 3, then perforation 6 is inserted so that it can be cut into each unit bag, and then the bottom of the bag is put. Seal 7 is applied to form. Then, after opening the mouth of the bag and carrying out the bag opening bag stacking 8 for packing the product W in the bag, the opening of the bag filled with the product is sealed 9 and the ears 10 are removed to form the packed product 11. .

In the above automatic packaging machine, in the steps from the raw fabric feeding section 2 to the seal 7 which constitute the bag making apparatus,
The print 4, the perforation 6 and the seal 7 are the original fabric feeding portion 2
Since printing, perforation and sealing are performed on the sheet 3 fed out from the sheet at a predetermined pitch interval P, it is desirable that the pitch interval P can be changed according to the form of the bag so that it can be applied to any bag. Further, the perforation 6 requires a driving device for moving the needle up and down in order to open the perforation holes in the sheet 3 which is intermittently fed out, and the seal 7 is provided on the sheet 3 which is fed out. A drive device is required to drive the heater vertically approaching the bottom surface. Conventionally, the drive device for the perforation 6 and the seal 7 is individually performed by a cylinder.

[0004]

Since the conventional bag-making drive device described above is driven individually by using cylinders, there are the following problems to be improved. That is, since the needle for making a perforation in the sheet and the heater for sealing the sheet are moved up and down by one stroke of the cylinder, there is a limit to the speed of one stroke of the cylinder, and the manufacturing speed is high. The problem is that you can't sack. Further, when the cylinder is driven at a high speed to move the driven object up and down, inertial force is generated in the driven object, making it difficult to finely adjust the cylinder stroke. If the pressure-bonding force is too strong, the sheet may be melted, and if it is too weak, the welding may be insufficient and the seal may be incomplete. Also,
The driven objects driven by the cylinders collide with the other party at a high speed and move away from the other party at the moment of the collision, so the driven objects that collide with each other are impacted by just hitting with a hammer. Power works. As a result, the driven object may be worn faster and sometimes damaged, which is problematic in terms of the useful life of the driven object.

The present invention enables high-speed bag making, and
The present invention provides a bag-making drive device that enables fine adjustment to perform good bag-making and has a long useful life of the bag-making device.

[0006]

According to a first aspect of the present invention for solving the above-mentioned problems, the means to be grasped from the first aspect of the present invention is to connect drive bars arranged substantially parallel to a frame provided substantially horizontally. One end of the link is rotatably connected to the frame and the other end is rotatably connected to the drive bar, the drive bar is swingably supported on the frame, and the driven body is supported by the drive bar via a slider. A drive link having one end rotatably supported on the frame is provided, an end of the drive bar is rotatably connected to the drive link, and the other end of the drive link and a rotary arm are connected by a rod. It is characterized by having done.

[0007]

Since the present invention is constructed as described above, it has the following effects. That is, a drive bar arranged substantially parallel to a frame provided substantially horizontally is swingably supported on a frame via a connecting link, and a driven body is provided on the drive bar via a slider. The swinging motion of the drive bar is converted into vertical movement for moving the driven body up and down via the slider, and the driven body is moved up and down by a movement amount according to the connecting length of the connecting link. Then, the drive link whose one end is rotatably supported by the frame is rotatably connected to the end of the drive bar, and the other end of the drive link is connected to the rotary arm by a rod to rotate the drive bar. The drive bar is swung at a speed corresponding to the rotation speed of the arm, and the driven body is moved in the vertical direction at a speed corresponding to the swing speed of the drive bar.

Then, the driving bar is swung by one continuous rotation of the rotary arm, not by the discontinuous movement such as the forward and backward movements of the piston of the cylinder.
By mechanically moving the lower drive member up and down, the operation of the lower drive member reaching the top dead center and descending can be smoothed.

[0009]

An embodiment of the present invention will be described below. First, the outline of the entire packaging device to which the present embodiment is applied will be described with reference to FIG. 7. The sheet 3 unwound from the material 1 in the unwinding part 2 is printed with a product name, a manufacturer's name, etc. in the printing machine 4, then sealed with the sealing part 7 and then perforated 6 is put into a bag. It The sheet 3 thus bag-manufactured is then cut by the cutter unit 12 into bag units, and the opening section cut by the bucket unit 13 is opened by the bucket. Then, the product conveyed by the conveyer conveyor 15 is pushed into the opened bag by the pusher 17 of the pushing device 16 and is then transferred to the sealing portion 14 by this pusher 17 and sealed, and the carrying-out device. Delivered by 18.

FIG. 1 is a diagram showing a drive portion for driving the perforations 6 and the seal portion 7, and a drive bar 21 is provided in parallel with a frame 19 supported at both ends by a column 20. The drive bar 21 is swingably supported on the frame 19 by a connecting link 22 having one end connected to the frame 19 by a pin P1 and the other end connected to the drive bar 21 by a pin P2. A drive link 23 is rotatably provided on the frame 19 by a pin P3, and an end portion of the drive bar 21 is connected to the drive link 23 by a pin P4. Then, the other end of the drive link 23 and the rotary arm 25
And are connected by a rod 24 by pins P5 and P6.

Thus, when the rotary arm 25 makes one rotation, the connecting link 22 swings to the position 22 'and the drive link 23 swings to the position 23', and the drive bar 21 swings up and down in the range of height H. . The height H can be finely adjusted by adjusting the distance between the pins P1 and P2. Further, the drive bar 21 is provided with a seal 7 via a slider 26. Thus, by using the slider 26, the slider 7 slides with respect to the movement of the drive bar 21 in the swing direction, and the seal 7 moves up and down in the vertical direction.

FIG. 2 is a plan view showing a drive source, which is a motor.
The rotation of 26 is transmitted to the clutch brake 27 by the belt 28, and the rotating arm 25 is intermittently rotated once. As a result, the cutter unit 12 cuts the bag unit, the bucket unit 13 opens the bag, and the pusher 17 of the pushing device 16 is used.
The time tact of pushing the product with the pusher 17, transferring the pusher 17 to the seal portion 14, and carrying out with the carry-out device 18 is taken. Further, in the case of only the bag-making device, there is no need to set timings for the other steps of cutting, opening, transfer, and unloading.
May be omitted and the rotating arm 25 may be continuously rotated.

Next, the seal 7 will be described. In FIG. 3, the lower drive member 27 is attached to the slider 26. An upper drive member 28 is provided above the lower drive member 27, and a rack 30 provided on the lower drive member 27 is provided.
A pinion 31 is interposed between the upper drive member 28 and a rack 29 provided on the upper drive member 28. The lower drive member 27 is provided with a lower heater 33, and the upper drive member 28 is provided with an upper heater 32. As a result, when the drive bar 21 moves up and down and the lower drive member 27 moves up and down in the vertical direction via the slider 26, the racks 29 and 30 and the pinion 31 mesh with each other, so that the lower heater 33 and the upper heater 32 are connected to each other. However, they move in a direction in which they approach each other.

Horizontal support plates 35 are provided on both sides of the lower drive member 27. An arm 36 is fixed to the horizontal support plate 35, and a vertical plate 37 is attached to the tip thereof.
An upper guide bar 38 and a lower guide bar 39 are provided at the upper end and the lower end of the vertical plate 37, and a belt 40 is stretched between the upper and lower guide bars 38 and 39. A guide surface is formed by the belt 40 so that the seat 3 (FIG. 7) is stretched. Even if the lower drive member 27 and the upper drive member 28 move together with the vertical plate 37 in the arrow A or B direction, the belt 40 moves up and down the guide bar 38.
By sliding 39 and 39, the guide surface of the seat 3 is maintained as it is.

The movement in the direction of arrow A or B is performed by turning the pinion 41 by a handle (not shown), and the pinion 41 meshes with the rack 43 fixed to the frame 19 shown in FIG. The pitch P shown in 8 can be adjusted individually. The handle 42 is provided to lock the movement of the pitch P after the pitch P is determined.

FIG. 4 is a side view of FIG. 3, in which the vertical support plate 34 is fixed to the horizontal support plate 35 by a fixing member 48, and female sliders 44 are provided above and below the vertical support plate 34. And 45 are installed. On the other hand, male sliders 46 and 47 are attached to the lower driving member 27 and the upper driving member 28, respectively, the male slider 46 is fitted to the female slider 44, and the male slider 46 is fitted to the female slider 45. Slider
The lower drive member 27 and the upper drive member 28 are vertically movably supported by the vertical support plate 34 when 47 is fitted. The slider 26 is fixed to the lower portion of the lower drive member 27, and the tip end of the connecting member 49 provided on the drive bar 21 is fitted in the slider 26 in a groove shape.
27 is in a state of being supported by the drive bar 21.

On the other hand, the upper drive member 28 is indirectly supported by the drive bar 21 because the rack 29 meshes with the pinion 31 pivotally supported by the vertical support plate 34. The female side sliders 44 and 45 and the male side sliders 46 and 47 are fitted in a dovetail groove shape like the fitting of the slider 26 and the connecting member 49, although not shown in the drawing. This allows
The lower drive member 27 and the upper drive member 28 can be moved up and down while the vertical plate 34 fixed to the horizontal support plate 35 and standing upright is stationary.

Further, both ends of the horizontal support plate 35 are connected to the frame 19 so that the whole structure can be moved in the directions of arrows A and B in FIG.
You can slide the top surface of the frame 19
The rack 43 fixed to the horizontal support plate 35 and the fixing member 48 is
The whole is supported on the frame 19 so as to be sandwiched between the sandwiching member 50 provided at the lower end of the frame. As a result, FIG.
When the pinion 41 shown in is rotated by a handle (not shown),
The rack 43 converts the rotation of the pinion 41 into a linear motion, and the horizontal support plate 35 moves in the direction of arrow A or B in FIG.

The lower heater 33 is supported by a lower heater support base 55 via a support member 56, and two guide bars 53 are provided on the back surface of the lower heater support base 55. Both ends of a lower heater support plate 51 are fixed to the lower drive member 27, and guide members 52 are provided on the lower heater support plate 51. The guide bar 53 provided on the back surface of the lower heater support 55 is inserted into the guide member 52. Further, a lower heater height adjustment bolt 57 is provided on the back surface of the lower heater support base 55, and the height adjustment means 54 adjusts the height of the lower heater 33 from the lower heater support plate 51. Fine adjustment is possible.

On the other hand, the upper heater 34 has a support member 60.
It is supported by the upper heater support base 59 via the, and a height adjusting bolt 61 is provided on the back surface of the upper heater support base 59. Both ends of the upper heater support plate 58 are connected to the upper drive member 28.
The height adjustment bolt 61 penetrates through the upper heater support plate 58, adjusts the height of the upper heater 34, and then tightens a nut to hold the adjusted height of the upper heater 34. I am trying. Therefore, the height of the upper heater 34 can be finely adjusted by adjusting the tightening margin of the nut.

Next, the perforation 6 will be described with reference to FIGS. 5 and 6.
Will be described. The lower drive member 27 is attached to the slider 26. Horizontal support plates on both sides of the lower drive member 27
35 is provided, an arm 36 is fixed to the horizontal support plate 35, and a vertical plate 37 is attached to the tip thereof. An upper guide bar 38 and a lower guide bar 39 are provided at the upper end and the lower end of the vertical plate 37, and a belt 40 is stretched between the upper and lower guide bars 38 and 39. A guide surface is formed by the belt 40 so that the seat 3 (FIG. 7) is stretched. Even when the lower drive member 27 moves in the direction of arrow A or B together with the vertical plate 37, the belt 40 slides on the upper and lower guide bars 38 and 39 to keep the guide surface of the seat 3 as it is. ing. A guide plate 62 is provided on one of the vertical plates 37 to reduce the bending of the sheet 3 supported in a state of being stretched between the vertical plates 37, and a needle (may be a discontinuous blade).
The needle 63 prevents the sheet 3 from being pulled in when the sheet 63 comes out of the sheet 3.

The movement in the direction of arrow A or B is carried out by rotating the pinion 41 by a handle (not shown), and the pinion 41 meshes with the rack 43 fixed to the frame 19 shown in FIG. The pitch P shown in FIG. 8 can be adjusted. The handle 42 is provided to lock the movement of the pitch P after the pitch P is determined.

FIG. 6 is a side view of FIG. 5, in which the vertical support plate 34 is fixed to the horizontal support plate 35 by a fixing member 48. Below the vertical support plate 34, a female slider 44 is provided. Is installed. On the other hand, a male slider 46 is attached to the lower drive member 27, and a female slider 44 is attached.
The male slider 46 is fitted to the lower drive member 27, and the lower drive member 27 is supported by the vertical support plate 34 so as to be vertically movable. The slider 26 is fixed to the lower portion of the lower drive member 27, and the tip end of the connecting member 49 provided on the drive bar 21 is fitted into the slider 26 in a groove shape. Is supported by the drive bar 21.

The female side slider 44 and the male side slider 46 are fitted in a dovetail groove shape like the fitting of the slider 26 and the connecting member 49, although not shown in the drawing. As a result, the lower drive member 27 can be moved up and down while the vertical plate 34 fixed to the horizontal support plate 35 and standing upright is stationary.

Both ends of the horizontal support plate 35 are connected to the frame 19 so that the entire structure can move in the directions of arrows A and B in FIG.
You can slide the top surface of the frame 19
The rack 43 fixed to the horizontal support plate 35 and the fixing member 48 is
The whole is supported on the frame 19 so as to be sandwiched between the sandwiching member 50 provided at the lower end of the frame. As a result, FIG.
When the pinion 41 shown in is rotated by a handle (not shown),
The rack 43 converts the rotation of the pinion 41 into a linear motion so that the horizontal support plate 35 moves in the direction of arrow A or B in FIG.

Both ends of a needle support base 64 are fixed to the top of the lower drive member 27, and a needle holder 65 is attached to the needle support base 64. A guide post 66 is attached to the upper portion of the vertical support plate 34, and a receiving member support plate 68 is provided.
The guide posts 66 are inserted into the guide members 67 provided at both ends of the vertical support plate so that the receiving member support plate 68 can move up and down.
It is attached to 34. A holding member 70 is supported on the receiving member support plate 68 via a supporting member 69, and the holding member 70 is provided with a receiving member 71. After adjusting the height of the receiving member 71 by sliding the guide member 67, the bolt 72 is tightened to fix the guide member 67 to the guide post 66 and hold the position of the received receiving member 71. I have to. Further, by inserting the guide post 66 into the guide member 67 and attaching the receiving member 71, the receiving member 71
Is designed to be easily replaced.

The operation of the present embodiment configured as described above will be described below. A drive bar 21 disposed substantially parallel to a frame 19 provided substantially horizontally is swingably supported on the frame 19 via a connecting link 22, and a perforated line 6 is formed on the drive bar 21 via a slider 26. By providing the seal 7 and the seal 7, the swinging operation of the drive bar 21 is performed via the slider 26.
The lower drive member 27 can be moved up and down to be moved vertically, and the lower drive member 27 can be moved up and down by an amount of movement corresponding to the height H between the pins P1 and P2 of the connecting link 22. The end of the drive bar 21 is connected to the pin P by the drive link 23 whose one end is rotatably supported by the frame 19 by the pin P3.
By rotatably connecting the drive bar 23 and the other end of the drive link 23 and the rotary arm 25 with the rod 24 by the pins P5 and P6, the drive bar 21 can be driven at a speed corresponding to the rotational speed of the rotary arm 25. The lower drive member 27 can be vertically moved at a speed according to the swing speed of the drive bar 21.

As described above, the drive bar 21 swings by one continuous rotation of the rotary arm 25, not the discontinuous movement such as the forward and backward movements of the piston of the cylinder. Through the lower drive member 27
Since the mechanism is vertically moved, the continuous rotation of the rotary arm 25 also causes the drive bar 21 to continuously swing, and the continuous swing of the drive bar 21 also causes the lower drive member 27 to continuously move up and down. Since it moves, the lower drive member 27 reaches the top dead center and descends smoothly.

[0029]

As described in detail above, according to the present invention, which can be understood from the detailed description of the invention based on the description of claim 1, the drive arranged substantially parallel to the frame provided substantially horizontally. The bar is swingably supported on the frame via a connecting link, and the driven body is provided with a driven body via a slider, and the swinging motion of the drive bar is caused to move the driven body up and down via the slider. By converting to vertical movement and moving the driven body up and down by the amount of movement according to the connecting length of the connecting link, it is possible to finely adjust the range of vertical movement of the driven body and ensure bag making. In addition to being able to carry out, the useful life of the driven body can be extended.

An end of the drive bar is rotatably connected to a drive link whose one end is rotatably supported by the frame, and the other end of the drive link and a rotary arm are connected by a rod. The drive bar can be swung at a speed corresponding to the rotation speed of the rotary arm, and the driven body can be moved in the vertical direction at a speed corresponding to the swing speed of the drive bar. The bag can be made at a speed corresponding to the above, and the bag can be made at a high speed.

Further, the drive bar is oscillated by one continuous rotation of the rotary arm rather than the discontinuous operation such as the forward and backward movements of the cylinder piston, and the oscillating operation of the drive bar is downwardly driven by the slider. The member is mechanically moved up and down, and the continuous rotation of the rotating arm also causes the drive bar to continuously swing, and the continuous swing of the drive bar also causes the lower drive member to continuously move up and down. Since the operation of the drive member reaching the top dead center and descending is smooth, no impact force is exerted on the driven body, and the useful life of the driven body can be extended.

[Brief description of drawings]

FIG. 1 is a side view showing a main part of an embodiment of the present invention.

FIG. 2 is a plan view of a driving source of the driving device in FIG.

FIG. 3 is a front view showing a seal which is an example of a driven body.

FIG. 4 is a side view of FIG. 3;

FIG. 5 is a front view showing perforations, which is an example of a driven body.

FIG. 6 is a side view of FIG. 5;

7 is a side view of the entire packaging device to which the drive device shown in FIG. 1 is applied.

FIG. 8 is an explanatory view schematically showing the automatic packaging device.

[Description of sign]

 19 frame 20 support 21 drive bar 22 connecting link 23 drive link 24 rod 25 rotating arm 26 slider 27 lower drive member 28 upper drive member 29 rack 30 rack 31 pinion 32 upper heater 33 lower heater 34 vertical support plate 35 horizontal support plate 36 Arm 37 Vertical plate 38 Upper guide bar 39 Lower guide bar 40 Belt 41 Pinion 42 Handle 43 Rack 44 Female slider 45 Female slider 46 Male slider 47 Male slider 48 Fixing member 49 Connecting member 50 Clamping member 51 Lower heater support Plate 52 Guide member 53 Guide bar 54 Height adjusting means 55 Lower heater support 56 Support member 57 Lower heater height adjustment bolt 58 Upper heater support plate 59 Upper heater support 60 Support member 61 Height adjustment bolt 62 Guide surface 63 needles 64 needle support base 65 needle holder 66 guide post 67 guide member 68 receiving member support plate 69 supporting member 70 holding member 71 receiving member 72 bolt

Claims (1)

[Claims] 1. A drive bar is arranged substantially parallel to a frame provided substantially horizontally, one end of a connecting link is rotatably connected to the frame, and the other end is rotatably connected to the drive bar. ,
A drive bar is swingably supported on the frame, a driven body is provided on the drive bar via a slider, and a drive link having one end rotatably supported is provided on the frame. A bag-making drive device characterized in that an end portion is rotatably connected, and the other end of the drive link and a rotary arm are connected by a rod.