JPH01501788A - wire tying device - Google Patents

Abstract

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

Description

[Detailed description of the invention] Waiya binding device V garden 1 The present invention involves twisting wire to seal the neck or open end of a flexible bag closed. related to the equipment used.

It has the name ``Method and apparatus for tying up pan cages and wrapped materials.'' No. 3.138.904, issued to Barod, Earl E. Charles E., Burford and Leonard W. Burford. - U.S. Patent No. 3,059,670, issued to Ford; It has the name "device for tightening materials that have been lamped and U.S. Patent No. 3.919.82 to Ford and Charles E., Burford. A device of the type disclosed in No. 9 includes a wire-like ribbon around the neck of the bag. Used to close plastic bags by attaching and twisting the bong. Ru.

It has the name "Tab attachment is a device" and was given to Charles E., Burford. A device of the type disclosed in National Patent No. 4.398.379 also uses plastic Used to close the bag. However, such a device Deformable plastic clip near the neck of the bag to keep the wire in place Attaching the lip.

11th gallery and The puffing device described here consists of a bung that is placed along the path of the neck of the bag. Clamp and along the passageway to constrict the neck of other bags adjacent to the bag. and a bag deflation device including a moving plunger. Plunge above The holder eliminates sag in plastic bags and reduces tension around the product inside the bag. Pull the bag until it is adjusted and deflate the neck of the bag.

The free end of the ribbon of tying material is gripped by the retainer assembly, and the ribbon of tying material is A ribbon extends across the path of the collapsed neck of the bag. The needle assembly Wrap the ribbon of binding material around the constricted neck of the hook and adjacent to the twist hook. Position the ribbon of binding material. A ribbon of binding material is placed around the neck of the bag. Once positioned and twisted, the stripper twists the tying material off the hook and removes it from the tying material. Eject the bag from the tying device.

The device is capable of tying wire at a rate sufficient to tie at a rate of, for example, 120 bags per minute. Improved to enable smooth sudden acceleration and deceleration such that the It is equipped with a drive system. A pair of cams attached to the drive shaft during plunge actuate the plunging clamp and plunging assembly to pull the bag around its contents. Provides synchronized movements to adjust tension.

The tying cycle includes the needle assembly, retainer assembly, torsion hook assembly and string. Begin by activating the clutch that controls operation of the par assembly. twist The hook assembly is driven through a 5-position Geneva drive cap hook, High impact force loads that are sometimes accompanied by sudden accelerations and decelerations of equipment parts and assemblies. virtually excluded. The clutch applies a sinusoidal waveform to the components of the system. and is configured to provide reduction and deceleration.

In the H type car Attached herewith are drawings of preferred embodiments of the invention so that the invention may be better and more fully understood. will be understood.

Figure 1 is a front view of the wire tying device; Figure 2 is a blue surface diagram; Figure 3 is a plan view; FIG. 4 is a cross-sectional view taken roughly along line 4-4 in FIG. 1, showing the details of the configuration more clearly. Partially broken to show.

FIG. 5 is a sectional view taken along line 5--5 in FIGS. 1 and 2, and FIG. 6 is a cross-sectional view taken along line 6-- in FIG. 6 is a cross-sectional view along line 7--7 of FIG. 1; FIG. 8 is a cross-sectional view along line 7--7 of FIG. FIG. 9 is a cross-sectional view taken along line 9-9 of FIG. Ru.

Reference numbers are used to identify parts shown in the drawings, and like reference numbers are used in each figure. Similar parts are shown through the sides.

゛nano- The wire tying device generally designated by the number 1G in FIGS. No. 3.138.904 and No. 3.138.904 (the disclosures of these patents (incorporated herein by reference in its entirety for all purposes) The conveyor 300 is located adjacent to a conveyor 300 of the type shown in FIG. more fully later As will be described, the conveyor belt 300 conveys, for example, bread loaves 125 one after the other in rapid succession. Such a conveyor conveys to, within and from the ear binding device 10. 300 is well known to those skilled in the art, further explanation thereof will be given more fully later. It does not appear to be necessary except in connection with the drive mechanism as described in .

Referring to FIG. 1, numeral 20 is used to move bag 125 along path 12 through holder shearing. A location adjacent to the cutting assembly 160, the torsion hook assembly 60 and the needle assembly 80. The bag deflating device is generally shown for transporting the bag to its position. More fully explained later In the holder shear assembly 160, the free end of the ribbon of wire-like material 15 is is grasped. Plunging assembly 20 connects bag neck 124 to slot 1 of face plate 16. 22 and pull the bag 125 around its contents to an adjusted tension condition. Ru. The needle assembly 80 attaches a ribbon 15 of wire-like material around the constriction neck of the bag. Wrap the wire around the neck 124 of the bag 125 by activating the twist hook 60. Twist part of the yarn material.

Wang Ekuso Soso! Referring to FIGS. 1, 2, 6 and 7, the bag deflation device 20 A generally V-shaped notch 24 is formed in one end of the bag 1 as more fully described in . A bag plunger 22 is provided for engaging the neck 124 of 25. plunge The plunger 22 is supported by a sliding block 25 that reciprocates along the plunger guide bar 30. held.

The best example is shown in Figure 1 (as shown, one end of the guide bar 30 is attached to the arm during the plunge) 32 and pin 34 to connect the frame or housing of wire binding device W10. 11 so as to be rotatable.

The opposite end of the guide bar 30 during plunging is fixed to the arm 36, and the arm 36 is rotatably fixed to the link 38 by the pin 35, and the link 38 is fixed to the link 38 by the pin 35. 39, the housing of the wire binding device 10 by the crank arm 40 and the pin 42 It is rotatably fixed to the support wall portion 14 of the ring.

A mid-plunge cam groove or trunk 46 is formed in the mid-plunge operating cam 45. A driven joint 44 at the end of the link 38 is movably disposed in this cam groove. be placed. Cam 45 is pinned or otherwise secured to shaft 50. The shaft 50 extends through the hole in the wall 14 and has a bolt within the housing 48. It is rotatably fixed in a ball bearing.

The best example is shown in Figure 1 (as shown, one end of the crank arm 52 is attached to the pin 54). The other end is pivoted to the end of the link 55 by a pin 53. It is worn. The link 55 moves the bag plunger head 22 along the guide bar 30. It is fixed by a pin 53 to a sliding block 25 that is moved. arm 58 Both ends of the link 55 are connected by a pin 57 to the central part of the link 55 and a pin 59 connects the camshaft. It is pivotally connected to the disk 45.

From the above explanation, when the cam 45 rotates counterclockwise as seen in FIG. and arm 58 moves downward and to the right as seen in FIG. The sliding block 25 is rotated to move the plunger 2 from a position adjacent to the support arm 32. 2 to a position adjacent to the support arm 36 at the opposite end of the guide bar 30. It should be easy to understand.

The cam 45 rotates approximately 180 degrees from the position of the bin 59 as shown in FIG. By this, the sliding block 25 and the plunger head 22 are directed toward the arm 36. and move it. At the same time, the rotation of the cam 45 causes the cam driven joint 4 at the end of the link 38 to 4, first pull down the link 38 and arm 36, and then remove the guide bar 3. 0 around the bin 34 to move the sliding block 25 toward the arm 36. Starting from the position shown in FIG. Move away from road 12. The sliding block 25 moves along the central portion of the guide bar 30. Upon movement, a cam groove 46 is formed to position the plunger head 22 adjacent the arm 36. The robot is moved toward route 12 so as to approach route 12. continuous cam 45 The rotation causes the sliding block 25 and plunger head 22 to become adjacent to the arm. The guide bar 30 is activated as it returns along the path 12 from the position shown in FIG. Maintain a qualitatively horizontal position.

From the above, the arm 36 at the end of the guide bar 30 rotates the guide bar 30 in a reciprocating manner. While imparting the motion, the plunger head 22 engages the guide as shown in FIGS. , a shaft 50 extends through the wall 14 and the shaft 50 A clamp cam 50a is provided. The cam 50a is attached by the bolt 50d. A cell having a first segment 50b and a second segment 50c fixed to each other. It is a gement cam. Cam segments 50b, 50c each include an outwardly extending row. They are of substantially the same construction with a tube and a reduced diameter section. However, Is the segment 50c rotatably keyed to the shaft 50? , or otherwise fixed. Cam segment 50b is a cam segment 50c, as will be explained more fully later. In order to adjust the length of the cam lobe, the leading edge 50e of the cam lobe is attached to the cam lobe. It is possible to adjust the &ta section 50f of the cable.

As best shown in FIG. 2, the bag clamp actuating arm 60 includes a cam follower. 60a is rotatably fixed, and this driven joint 60a is connected to the cam segment 50a. , 50c, and is pivotally connected to the bag clamp arm 65. 62 can be given longitudinal reciprocating movement. The actuating arm 60 is an idle sprocket. The rocket 74 is rotatably attached to a rotatably fixed shaft 61. It is. The link 62 is pivotally connected to the actuating arm 60 by a pin 63, and The opposite end of link 620 is pivotally connected to bag clamp arm 65 by bin 66.

The spring 64 elastically biases the cam driven joint 60a of the actuating arm 60 to cause the cam segment to move. 50b and 50c.

Pivotally attached to wall 14 by a bin 70, as best shown in FIG. A pressure foot 68 is fixed to the clamp arm 65.

From the above, the following should be easily understood. That is, the shaft 50 and the The rotation of arm 50a gives reciprocating motion to link 62 via actuating arm 60. Rotate the pressure foot 68 between the position shown in solid line and the position shown in broken line in FIG. .

As best shown in FIGS. 2 and 6, the end of shaft 50 includes a spout. A rocket 75 is provided, and the shaft 50 is driven by a contraction chain 80. , and this chain 80 is stretched around the idler sprockets 74, 76, 78. and is driven by a drive sprocket 82. As shown in Figure 2, the play space The pro case/) 78 is rotatably fixed to an arm 79, and this arm 79 is pivotally attached to the frame of the binding device 10 and can adjust the tension of the contraction chain 80. It looks like this.

As best shown in FIG. 5, a drive sprocket 82 is mounted on a shaft 84. This shaft 84 is rotated by a bearing 86 in a support block 88. possible. A connecting body 90 is fixed to this shaft 84, An elastic connecting body 9 in which spline teeth 92 are formed on the outer surface of the connecting body 90. 5 is formed with female spline teeth, and these female spline teeth are connected to the connecting body 9. 0 and engages with the spline teeth 92 of the shaft 84 and the contraction chain 80. constitutes an elastic torque transmission force input source.

1, 2 and 5 (as shown, the deformable link 9 5 extends through an elongated opening 96 in the wall 14 of the binding device 10.

A support block 100 is fixed to the frame of a conveyor (not shown). The block 100 rotatably supports a shaft 102 with a bearing 104. Ru. The shaft 102 is provided with a sprocket 105 and a connecting body 106. The connecting body 106 is provided with spline teeth 108, and these spline teeth extends into the flexible connector 95 and includes a female splice formed in the connector 95. engaged with the teeth. Chain 110 extends around sprocket 105. and is driven by a conveyor drive means (not shown).

As best shown in FIGS. 1 and 5, support block 100 includes a support block 100. The support frame 112 is provided on a frame 112 that supports the power-driven conveyor 3. 00 frame or adjacent to its sides. Support frame A pair of brackets 114 are provided on the arm 112, and these brackets A slotted U-shaped opening 115 is formed in the cradle. , pivot bins fixed to both side walls 11a and llb of the frame of the binding device 10. 11'6 extends into this cradle.

Pipont pin 116 is received in opening 115 and is centered about axis 118. The axis 118 extends generally parallel to the sides of the conveyor (not shown). and the axis around which the drive shaft 84.102 and the elastic coupling body 950 rotate. 119 and is perpendicular to this axis *119. The support frame 112 has a A latch arm 117a is pivotally connected to the binding device 1. The launcher is used to engage and disengage the latch bin 117C fixed to the side wall portion 11a of the It can be rotated by lever 117b.

From the above, the following should be easily understood. In other words, the lunch 117a is 117c, the frame of the binding device can be rotated about the axis 118. can be done. Center the frame of the bundling device against the conveyor shaft & 1118. When it is swung back into place, the front part of the tying device is used for maintenance purposes and also for removing the wire ribbon 15. Access is provided for ease of feeding through the needle assembly to the holder shear mechanism.

Since the axes 118, 119 intersect, the deformable female splined connection 9 5, the shaft 84 connects the deformable link 95 to the sprocket of the link 90.106. from alignment with the shaft 102 while maintaining engagement with the inner teeth 116 and 108. It should be easy to see that it can be moved easily.

From the above, the following should be easily understood. That is, the chain 110 The connecting body 106 is driven via the rocket 105, and the sprocket 105 is driven by a driving torque. the elastic coupling body 95, the coupling body 90, the sprocket 82 and the contraction chain. drive the engine 80. As shown in FIG. 2, the contraction chain 80 is connected to the sprocket 7 5 to give rotation to the shaft 50. The cams 50a and 45 are attached to the shaft 50. The pressure fan of the bag clamp 120 is driven in synchronization with the movement of the conveyor 300. By reciprocating the trolley 8, the plunging hend 22 and the plunging guide bar 30 move back and forth. Thus, the bag clamp 120 and the mid-plunging head 22 Driven continuously in synchronization with the conveyor, and each flight of the conveyor Once it passes 10, it is timed to move in the actuation cycle. Each flap of the conveyor As the items move past the binding device 10, they are loaded to the brim on the conveyor 300 and then If the pancage is supported at its maximum capacity, each package will exceed 10 ties. will be moved.

As best shown in FIGS. 1 and 7, neck 124 of bag 125 moves. The horizontal plane of the path 12 is formed on a face plate 16 fixed to the frame of the binding device IO. The slot 122 extends through the slot 122 .

As the bags are moved along path 12 on conveyor 300, a pair of brushes 126. 128 rotates and engages the neck 124 of the bag 125, thereby causing the neck 124 to face up. Position in slot 122 of plate 16.

As the flights of conveyor 300 supporting bags 125 move adjacent to the tying device, 7, the pressure foot 68 moves upward from the position shown in solid lines to the position shown in broken lines in FIG. during the plunge, the head 22 moves from the position adjacent to the arm 36 to the arm 32. frictionally engages the neck of the bag as it moves toward the bag. Hend 22 pressurizes during plunge engages the neck 124 of the bag restrained by Funtro 8, thereby removing loose packaging material Stretch the wire ribbon 15 around the contents of the bag to the adjusted tension. A constriction neck is formed adjacent the land and adjacent the torsion hook assembly 60.

Planting and planting Referring to FIG. 2, the sprocket 75 and the clump, generally designated 130, A connecting rod 128 is pivotally connected between the connecting rod and the connecting rod. I'll explain more fully later. Thus, energizing clutch 130 initiates a torsion cycle.

The clutch 130 is provided on the stamp shaft 132, and is connected to the stamp shaft 132. The foot 132 has an operating chain 135 that rotates the sprockets 136, 140. 0 operating chain 13 provided with a sprocket 134 for imparting motion to the 5 is idle sprocket 137,138 and idle sprocket 1 for chain tension It extends around 39. The idle sprocket 139 for chain tension is attached to the wall portion 14 The spring 139b is provided on an arm 139a pivotally connected to the chain 135. maintain tension.

As best shown in FIGS. 2 and 9, the sprocket 140 The shaft 142 is installed in a support housing 143. It is rotatably supported on hollow roller bearings. One end of shaft 142 A shuttle cam 145 having a cam groove 146 formed therein is provided. shuff An electric brake 148 and a cam 149 are provided at the opposite end of the shaft 142. . Cam 149 is positioned to actuate microswitch 150.

The dynamic brake 148 and cam 149 are attached to the hanger 151 and bracket 152. Supported.

A cam follower 156 extends into the cam groove 146 of the cam wheel 145 and has a fourth As best shown in the figure, this cam follower 156 is mounted on an actuating arm 158. This arm 158 is fixed to the frame of the binding device by a pin 159. It is worn. The opposite end of arm 158 is pivotally connected to link 157. Link 157 is pivotally connected to holder shear assembly 160. Holder shear assembly 16 0 is equipped with a gripping arm 162, which has a gripping flap at one end thereof. It has a finger 164 and is rotatably fixed to a plate 166 by bolts 165. It is. For installation, a pair of anvils 168 and 169 are formed at the end of the plate 166. each anvil has a strand 15 of wire-like ribbon, as will be more fully described below. associated with a shearing surface for gripping and cutting.

The cam groove 146 grips the driven knob 156 so that the gripping fingers 164 are positioned adjacent to the anvil 168. for moving between a determined first position and a second position adjacent to the anvil 169. 0 In the illustrated embodiment, the gripping arms and mounting are temporarily 166 centered. symmetrical about the line so that the holder shear assembly 160 can be used for right- or left-hand machines. It is now possible to use it.

Referring to FIG. 2, sprocket 136 is mounted on the end of shaft 172. The shaft 172 passes through the support wall 14 and connects to the gear box 174 shown in FIG. The gearbox 174 has an output shaft 175, 176 extending into the gearbox 174. is fixed, and an input is applied to the Geneva coupling body 190 to drive the torsion hook 215. However, the cam 220 that activates the stripper 230 can be rotated.

As shown in FIG. 2, a needle actuating arm 180 is fixed to the shaft 172. This arm 180 is pivotally connected to an adjustable needle link 182. The link 182 is pivotally connected to a crank arm 184 fixed to a shaft 185. It is. As best shown in FIG. The shaft 1 is supported by roller bearings provided in the ring 186. A curved needle 188 is provided at the outer end of 85 . Needle 188 is that A roller 189 is supported at the outer end and moves from the position shown by the solid line to the position shown by the broken line in FIG. position, and then rotates shaft 172 one full revolution. It is returned to the position shown by the solid line.

1 and 3, extending upwardly from gear box 174, The shaft 175 serving as the input for the five position Geneva connection 190.

The Geneva coupling body 190 has a driving member 192, and this driving member 192 is connected to the shaft. It is fixed to the foot 175 and supports a pair of drive pins 193 and 194. The bin extends into the guideway 195 of the star wheel 196. star wheel 1 96 is driven and fixed to a sprocket 198 for giving movement to the chain 200. There is. The star wheel 196 and sprocket 198 form the frame of the strapping device 10. It is rotatably provided on a stamp shaft 199 fixed to the stamp shaft 199. chain 2 00 drives a sprocket 202 fixed to a shaft 204, and the shaft 20 4 drives sprocket 205. The shaft 204 is connected to the crank of the binding device. Rotatably fixed to the frame. Sprocket 205 connects chain 206 drive The chain 206 is secured to the upper end of the shaft 210 of the torsion assembly. The sprocket 208 extends around the sprocket 208 .

The shaft 210 is rotatably secured within the support housing 212 with a ball bearing. A hanging hook 215 is fixed to the lower end of the shaft 210.

The torsion hook 215 is disclosed in Burford Patent No. 3,059,690 and Burford Patent No. 3,059,690. It is similar to the twisting device disclosed in US Pat. No. 3,919,829.

Referring to FIGS. 1 and 4, a shaft extending downwardly from gearbox 174 is shown. A cam wheel 220 is provided at the lower end of the shaft 176. Come Hoey A cam groove 222 is formed in the crank 220, and the driven iN2 on the crank 225 24 extends into this groove 222. Crank 225 is connected via link 228 Pivots to rotate about end 226 to actuate striff bar arm 230. It is worn. Both ends of link 228 are pivoted to arm 225 and stripper 230. It is worn. The stripper 230 is rotated by a bin 232 to the frame of the strapping device. fixed in a rotatable manner.

The clutch, designated generally by the number 130, has a plurality of cutouts 242, 244, 245 removed. It has a cam 240 formed around its periphery. The shaft 132 has a clutch link 2 One end of 48 is pivotally connected, and the other end is connected to clutch arm 2 by a pin 247. It is pivoted to 46. A cam driven joint 280 is pivotally connected to the clutch arm 246. This driven section 280 is positioned so as to engage around the cam plate 240. ing. One end of the actuating link 128 is pivotally connected to the clutch arm 246. , the opposite end is pivotally connected to a sprocket 75. The sprocket 75 is When the rocket 75 rotates about the axis of the shaft 50, the link 128 receives reciprocating movement. It should be easy to see that it functions as a crank that provides motion. Rin By reciprocating the clutch arm 246 in the longitudinal direction, the clutch arm 246 is moved as shown by the solid line in FIG. and the position shown by the broken line.

In the illustrated embodiment, sprocket 75 is shown in dashed lines from the position shown in solid lines in FIG. When rotated 360° to the position, the clutch arm 246 swings 120”. , then returns to the solid line position. In the illustrated embodiment, the cam plate 240 has a circumferential groove around its periphery. It has three notches 242, 244, and 245 spaced apart by 120a in the direction. .

When the clutch arm 246 is operated for one full operating cycle, Follower joint 250 is rotated so that cam plate 240 is rotated only in a counterclockwise direction as viewed in FIG. of clutch arm 246 extending through shaft 132 and pin 247. Located on one side of the center line.

You should know that it is configured to make decisions. In other words, the clutch 130 is unidirectional, which transmits torque in one direction but not in the opposite direction. It's a clutch.

A bridge arm 255 is attached to the support wall 14 of the binding device 10 by means of a bin 256. The arm 255 is pivoted so that its end coincides with the outer circumference of the cam plate 240. It has a curved surface. The opposite end of bridge arm 255 is connected to solenoid 262. It is connected via a link 259 to a rod 260 that is actuated. spring 265 resiliently biases bridge arm 255 toward the position shown in solid line in FIG.

Activating solenoid 262 retracts rod 260, thereby The cam plate 255 is rotated about the pin 256, and its curved surface 258 is rotated around the cam plate 240. a notch positionable adjacent the cam follower 250 in alignment with a curved surface on the outer periphery of the cam follower 250; 242.244 or 245. Thus, cam follower 2 50 fits into a notch in the cam plate 240 while energizing the solenoid 262. Never.

As best shown in FIG. 1, shaft 270 extends through support wall 14. A trigger arm 272 is fixed to the end of the shaft. This trigger arm 272 laterally traverses the path 12 along which the neck of the bag 125 travels. It's extending. Thus, movement of the neck of the bag along path 12 causes arm 2 72 and shaft 270 are rotated once the bag reaches them to open the working cycle. start As shown in FIG. 2, a lever 274 provided on the shaft 270 is As arm 272 is moved by the bag moving along path 12, the trigger The switch 275 is positioned to actuate the switch 275. The bag is in the right place for switch 275 magnetic brake 148 and solenoid when reaching and rotating arm 272. 262 is electrically connected to deenergize it. solenoid 262 is deenergized The spring 265 then moves the pringe arm 255 to the position shown by the solid line in FIG. sprocket 7 and drop the cam driven joint 250 into the notch 245 of the cam 240. The rotation of 5 gives rotation to the cam 240 and rotates the cam by an angle of 120°.

In the illustrated embodiment, sprocket 134 includes 54 teeth. Sprocket Sprocket 136 has 18 teeth and sprocket 140 has 36 teeth.

Thus, rotation of sprocket 134 through an angle of rotation of 120'' Rocket 136 is rotated 360 degrees and sprocket 140 is rotated half a turn or 18 degrees. Rotate 09 times.

One revolution of the sprocket 136 causes the shaft 182 to swing and the needle 18 to rotate. 8 by one full working cycle, i.e. from the position shown in solid line in Figure 1 to the position shown in dashed line. Move it to the position shown by and then return it to the position shown by the solid line.

A half turn of the sprocket 140 causes the shirt torque cam 145 to turn a half turn, and The gripping fingers 162 are moved from a position adjacent to anvil 168 to a position adjacent to anvil 169. The mounting is moved relative to plate 166 to the position.

Also, one full rotation of the sprocket 136 causes the gear box 174 to move downwardly. The elongated output shaft 176 is rotated one full revolution, thereby causing the stripper cam 220 to Move the stripper 230 one full rotation to move the stripper 230 from the position shown in FIG. and move it clockwise past the stripper hook 215, and place it in the position shown in Figure 4. The twisted wire 15 is removed from the twist hook 215.

One revolution of sprocket 136 causes an output extending upwardly from gearbox 174. By rotating the shaft 175 once, the torsion hook shaft is released by the 5-position Geneva connection 190. The shaft 210 is rotated four full revolutions, thereby twisting the wire.

Approximately two-thirds of the way through the tying cycle, cam 149 on shaft 142 Activating the switch 150 energizes the magnetic brake 148 and energizes the solenoid 262. to strengthen

When the magnetic brake 148 is energized, the braking force is applied to the shaft 142 and the sprocket 14. 0 and actuating chain 135, continuously driven and unidirectional. The retractor is disconnected from the braking action of the magnetic brake 14 through the clutch 130. A braking action is applied to all moving parts of the bundling device except for the mechanism 20.

When the solenoid 262 is energized by the microswitch 150, the bridge arm The bar 255 is rotated clockwise about the bin 256 as seen in FIG. The curved surface 258 of the ridge arm 255 is aligned with the outer circumference of the cam 240, thereby When another bag arrives, actuation of switch 275 turns solenoid 262 on again. The cam follower 250 prevents the cam 240 from rotating until it is deenergized.

The arm 280 is biased counterclockwise as shown in FIG. 0 notches 242, 244, 245 to turn switch 275. When actuated, the clutch plate 242 is properly positioned to perform the tying cycle. be sure to show that the

From the above, the following should be easily understood. In other words, the improved drive shown in FIG. The device is designed so that the pin 129 securing the pull rod 128 to the sprocket 75 is substantially While moving in the vertical direction, begin the tying cycle and move the cam plate 240 to the first position. 0, the velocity follows a purely sinusoidal curve. Then, the cam driven joint 245 is removed from the notch 245, and the electric power is turned off. Activating the dynamic brake 148 smoothly decelerates the parts. electric brake 148 applies enough force to overcome the inertia of the moving part to return it to its original position, and then is ready for the binding cycle.

With the improved drive system described above, shock loads on the system are substantially eliminated.

Adjustable cam consisting of cam segments 50b, 50C that are adjustable with respect to each other 50a adjusts bag clamp 120 to pull the bag around its contents for bundling. Accurate control of tension can be performed.

FIG.9 FIG. 7 FIG-6 FIG 10 Procedural amendment (formality) , 3.29 1989 Month 8 Luck Yoshi, Commissioner of the Patent Office 1) Takeshi Moon 1. Indication of case: PCT/US 871030452, title of invention: wire binding Device 3. Person who makes corrections Relationship to the case: Applicant Name: Burford Corporation 4, Agent 5. Date of amendment order: March 7, 1999 International search report

Claims (6)

[Claims] 1. A device for positioning a bag along a path, the device comprising a frame and a plunger. a plunger guide means; and a plunger guide means for displacing the plunger on the plunger guide means. and means for reciprocating the plunger, and the plunger guide means are movably mounted on the frame. moving the means for attaching the plunger and the guide means to place the plunger near the path; positioning and when said plunger moves in a first direction on said guide means; means for causing the plunger to move along the path; When the plunger begins to move in the opposite direction along the guide means, the plunger Placing the bag along a path characterized by moving away from the path equipment for. 2. bag clamping means disposed near said path, and said plunger When adjusting the tension of the bag by moving near the clamping means, 2. The bag according to claim 1, further comprising means for activating to limit movement of the neck of the bag. Device. 3. further comprising a shaft, the means for reciprocating the plunger; Said means for moving said guide means are attached to said shaft and said The device according to claim 2, wherein the plunger and the guide means move in a predetermined relationship. . 4. Means for actuating the clamping means are mounted on the shaft and The clamping means, the plunger, and the plunger guide means move in a predetermined manner. 4. The apparatus of claim 3, wherein the apparatus is maintained in relationship. 5. A drive mechanism for a bag closure device mounted near a conveyor, the drive mechanism cradle means for rotatably supporting the closure device near the conveyor about a support axis; , a grooved input shaft driven by said conveyor and operatively connected to a bag closure device. a grooved drive shaft connected to the input shaft and a deformable coupling between the input shaft and the drive shaft. the coupling has a longitudinally extending drive axis intersecting the support axis; said occlusion about said support axis without substantial elongation of said deformable coupling; A drive mechanism for a bag closure device, characterized in that it allows rotation of the device. 6. The crank, the tension rod, the cam plate, the cam follower, and the above tension rod. means for pivotally supporting the rod on the crank, and mounting the follower on the pull rod. Then, the roller engages with the cam plate and rotates against the cam plate when the crank rotates. a means for transmitting the cam, a geneva coupling, and the cam plate to drive the genera means for driving the coupling, the output of the coupling has a speed of a sine waveform. A drive mechanism characterized by a curved line.