JP5498297B2 - Packaging surplus part discharge structure of packaging machine - Google Patents

Description

  The present invention provides a mounting table in which a supply port is formed, a receiving table for receiving crops such as lettuce, cabbage or broccoli supplied from the supply port together with a packaging sheet mounted on the mounting table, and the mounting table and the receiving table. A crop can be supplied from the supply port to the cradle by an opening operation with the pedestal, and a peripheral side of the packaging sheet can be cropped by a closing operation between the mounting table and the cradle. Cutting means for cutting and cutting the surplus portion of the packaging sheet after packaging, which is provided in the sealing region, by opening and closing means for packaging the crop with the packaging sheet by gathering and sealing in a sealing region above the upper end of the packaging The present invention relates to a packaging surplus portion discharging structure of a packaging machine equipped with means.

  As the packaging surplus part discharge structure of the packaging machine as described above, there is a structure in which the surplus part of the cut packaging sheet is blown out by the compressed air ejected from the ejection nozzle (see, for example, Patent Document 1). .

Japanese Unexamined Patent Publication No. 06-345022 (paragraph number 0015, FIG. 10)

  In the above configuration, since it is necessary to equip a dedicated compressor or a prime mover for obtaining compressed air that blows away the excess portion of the cut packaging sheet, it is easy to increase the size of the packaging machine, and the cost There is room for improvement in the reduction.

  An object of the present invention is to provide a packaging surplus part discharge structure of a packaging machine that can suppress an increase in size of the packaging machine and can reduce costs.

In the first problem solving means of the present invention,
A mounting table in which a supply port is formed, a receiving table for receiving a crop supplied from the supply port together with a packaging sheet mounted on the mounting table, and the supply in an opening operation between the mounting table and the receiving table The supply of the crop from the mouth to the cradle is enabled, and the peripheral side of the packaging sheet is brought together in the sealing region above the upper end of the crop by the closing operation between the mounting table and the cradle. The packaging surplus part discharge | emission of the packaging machine provided with the opening / closing means which wraps agricultural products with the said packaging sheet by sealing, and equipped with the cutting | disconnection means which cut | disconnects the surplus part of the said packaging sheet after packaging located in the said sealing area | region In structure
A discharge means for gripping and transporting the excess portion after cutting located in the sealing region to a predetermined discharge position and discharging the excess portion from the discharge position to the outside of the machine;
In conjunction with the closing operation of the opening / closing means, the discharging means returns from the discharging position to the standby position on the upper side in the transport direction than the sealing area, and the discharging means is interlocked with the opening operation of the opening / closing means. The discharge means is linked to the opening / closing means via a mechanical transfer linkage so that the means is moved from the standby position to the discharge position .
The discharging means is configured to be a swing type provided with a gripping means for gripping the surplus portion after cutting at a free end of a swinging member that swings back and forth along the opening / closing means over the standby position and the discharge position. And the gripping means is positioned on the free end side of the swinging member with respect to the fixed finger provided at the free end portion of the swinging member, and is positioned along the open / close means with respect to the fixed finger. The movable finger moves the sealing region by the swinging of the swinging member in the release state of the gripping means in which the movable finger is moved to the open side. In the gripping state of the gripping means that has passed and moved the movable finger to the closed side, the movable finger is configured not to pass through the sealing region by swinging of the swinging member,
In the discharging process in which the discharging means is transported and moved to the discharging means, the movable finger passes through the sealing area, and in the returning process in which the discharging means is moved back, the movable finger moves the sealing area. Operation means for operating the movable finger according to the moving direction of the discharge means is provided so as not to pass .

  According to this problem solving means, the mechanical linkage structure using the opening and closing operation of the opening and closing means for packaging grips and conveys the excess portion of the packaging sheet cut after packaging to a predetermined discharge position and moves it from the discharge position to the outside of the machine. Can be discharged.

  Therefore, compared with the case where a package surplus part discharge structure using compressed air that needs to be equipped with a dedicated compressor or prime mover is installed, the size of the packaging machine can be suppressed and the cost can be reduced. The excess portion of the packaging sheet can be discharged out of the machine from the discharge position.

  According to this problem solving means, in the discharging process in which the discharging means is transported in conjunction with the opening operation of the opening / closing means, the movable finger is applied to the cut excess part located in the sealing region to remove the cut excess part. It can be held with a movable finger and a fixed finger. Thereby, the surplus part after a cutting | disconnection can be reliably conveyed from a sealing area | region to the discharge position.

  Further, in the return step in which the discharge means returns in conjunction with the closing operation of the opening / closing means, the peripheral side of the packaging sheet is gathered to the sealing area by the closing operation of the opening / closing means, and then swings near the sealing area. When the member moves, it is possible to prevent the movable finger from coming into contact with the peripheral side of the packaging sheet gathered in the sealing area, and the peripheral side of the packaging sheet is sealed by the closing operation of the opening / closing means. When the swinging member moves near the sealing area at the stage where it is gathered in the area, it is possible to make it difficult for the movable finger to contact the peripheral side of the packaging sheet gathered in the sealing area. Thereby, the occurrence of defective discharge in the discharge process due to the movable part in contact with the moving part returning to the surplus part of the packaging sheet after being gathered and cut in the sealing region, and the surplus part being displaced, Generation | occurrence | production of the packaging defect etc. resulting from the movable finger | toe returning to the peripheral side of the packaging sheet gathered toward the sealing area | region being caught can be prevented.

In the second problem solving means of the present invention, in the first problem solving means,
A cam follower provided with the operating means as being displaceable on the swing member, and a mechanical gripping linkage that links the cam follower and the movable finger so that the movable finger opens and closes in conjunction with the displacement of the cam follower. Means and a first cam and a second cam for guiding the cam follower as the swinging member swings, and in the discharging step, the cam follower is moved as the first cam along with the swinging of the swinging member. The movable finger passes through the sealing region by displacing the cam follower, and the cam follower is displaced along the second cam as the swing member swings in the return step. The movable finger is configured to be operated by a cam so that the movable finger does not pass through the sealing region.

  According to this problem solving means, since it is not necessary to equip an actuator such as a dedicated electric motor for operating the movable finger or a dedicated control means for controlling the operation of this actuator, the structure is simplified. In addition, cost can be reduced.

In the third problem solving means of the present invention, in the first or second problem solving means,
The discharge means includes discharge means for discharging the surplus part after cutting held and conveyed to the discharge position from the discharge position to the outside of the machine,
In conjunction with the swinging of the swinging member in the discharge end region in the discharging step, the discharging means swings over the gripping means from the fingertip side of the gripping means to the fingertip side along the opening / closing means. The discharge means is linked to the swinging member via a mechanical discharge linkage means so as to move, so that the excess portion after cutting is discharged from the discharge position to the outside of the machine. is there.

  According to this problem solving means, the surplus part after cutting is packed without an actuator such as a dedicated electric motor for operating the discharging means or a dedicated control means for controlling the operation of this actuator. It can be discharged at a position away from the machine.

  That is, it is possible to discharge the surplus portion to a position away from the packaging machine while simplifying the configuration and reducing the cost.

It is a perspective view of a packaging machine. It is a vertical left side view of a packaging machine. It is a vertical left side view of the upper part of the packaging machine showing a state before the packaging sheet is supplied. It is a vertical left side view of the upper part of the packaging machine showing the state of cutting the packaging sheet after supplying the packaging sheet. It is a vertical left side view of the upper part of the packaging machine showing the state before the crop supply. It is a vertical section left view of the important section showing the state immediately after crop supply. It is a vertical left view of the principal part which shows the packaging state of agricultural products. It is the vertical left side view of the principal part which shows the packaging sheet surplus part cutting state after crop packaging. It is the vertical left side view of the principal part which shows the crop discharge chute transfer state after packaging. It is the vertical left side view of the principal part which shows the crop discharge state after a packaging, and a cutting | disconnection surplus part discharge state. It is a vertical front view of the principal part which shows the state immediately after crop supply. It is a vertical front view of the principal part which shows the packaging state of agricultural products. It is a longitudinal front view of the principal part which shows the packaging sheet surplus part cutting | disconnection state after crop packaging. It is a vertical front view of the principal part which shows the crop discharge chute transfer state after packaging. It is a cross-sectional top view of the principal part which shows the state of the switchgear and discharge | emission means before a packaging start. It is a cross-sectional top view of the principal part which shows the state of the opening / closing apparatus and discharge means during packaging. It is a cross-sectional top view of the principal part which shows the state of the opening / closing apparatus and discharge | emission means at the time of completion | finish of packaging. It is a cross-sectional top view of the principal part which shows the state of the opening / closing apparatus and discharge means during conveyance of the surplus part after completion | finish of packaging. It is a cross-sectional top view of the principal part which shows the state of the switchgear before discharge | emission of the surplus part after completion | finish of packaging, and the discharge means. It is a perspective view of the principal part which shows the structure of a sheet roll mounting part and a cutting device. It is a perspective view of the principal part which shows the structure of a drawer | drawing-out apparatus. It is a vertical front view of the principal part which shows the movement path | route with respect to the fixed base for a packaging sheet cutting | disconnection by the return movement of the holding | grip mechanism for packaging sheet supply. It is a vertical front view of the principal part which shows the movement path | route with respect to the fixed base for a packaging sheet cutting | disconnection by the supply movement of the holding | grip mechanism for packaging sheet supply. It is a cross-sectional top view of the principal part which shows the structure of the discharge means. It is a perspective view of the principal part which shows the structure of a discharge means. It is a block diagram which shows a part of control structure.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

  As shown in FIGS. 1-19, the packaging machine for agricultural products illustrated in this embodiment takes out the packaging sheet 1 of set length from the sheet roll R of the state which wound the long packaging sheet 1 in roll shape. Supplying means A for supplying, packaging means B for packaging crops a such as lettuce, cabbage or broccoli that are artificially supplied from the front working position with a set-length packaging sheet 1, and guiding the crops a after packaging outside the machine The fuselage frame F is provided with guide means C, discharge means D for discharging the surplus portion 1A of the packaging sheet 1 after packaging, and control means E for controlling the operation of the packaging machine. . The packaging sheet 1 employs a permeable resin film made of polypropylene or polystyrene.

  As shown in FIGS. 1 to 5, the supply unit A pulls out a set length of the packaging sheet 1 from the sheet roll mounting unit 2 and the sheet roll R to supply the sheet roll R to the upper end of the packaging unit B. And a cutting device 4 that cuts the drawn packaging sheet 1 to a set length, and the like, and is arranged on the rear side of the body frame F that is the side away from the working position.

  As shown in FIGS. 1 to 19, the packaging means B includes a mounting table 5 on which the packaging sheet 1 supplied by the drawer device 3 is mounted, and packaging on the mounting table from a circular supply port 5 </ b> A formed at the center of the mounting table 5. As a cradle 6 that receives the crop a supplied with the sheet 1, an elevating device 7 that moves the cradle 6 up and down, and an opening / closing means that wraps the crop a on the cradle with the packaging sheet 1 on the cradle by opening and closing operations. The opening / closing device 8 is arranged on the front side of the machine body frame F on the working position side.

  As shown in FIGS. 1 to 14, the guiding means C includes a discharge chute 9 that receives the packaged crop a from the receiving tray 6 and guides it outside the machine, and is provided on the left side portion of the upper and lower intermediate part of the machine frame F. It has been deployed.

  As shown in FIGS. 8 to 10 and FIGS. 15 to 19, the discharging means D includes a transport device 10 that transports the surplus part 1 </ b> A of the wrapped packaging sheet 1 to the discharge position set at the upper left front end of the packaging machine, and The discharge device 11 as discharge means for discharging the surplus portion 1A of the packaging sheet 1 from the discharge position toward the left side of the machine is arranged at the front upper end of the machine frame F.

  As shown in FIG. 1, the control means E is provided as a control program in a control device 12 configured by using a microcomputer including a CPU and an EEPROM. The control device 12 is disposed at the lower right front end of the body frame F.

  As shown in FIGS. 1-19, the body frame F is comprised so that various steel materials, such as an angle steel material and a channel steel material, may be assembled | attached to frame shape, and the supply means A, the packaging means B, etc. may be supported. In the machine body frame F, the mounting table 5 and the like are disposed above so as to form a space for supplying a packaging sheet between the front and rear outer plates 13 to 16 forming the front and rear, left and right outer surfaces of the packaging machine. A top plate 17 that covers the four sides, four casters 18 that facilitate the movement of the packaging machine, and the like are attached.

  As shown in FIGS. 1 to 5 and FIG. 20, the sheet roll placement unit 2 is disposed at the rear upper end of the machine body frame F. The sheet roll placement unit 2 includes front and rear support rollers 19 that are installed over both left and right ends of the sheet roll placement unit 2. The front and rear support rollers 19 are arranged in a state where a set interval is provided in the front-rear direction so as to receive and support the sheet roll R in the left-right orientation whose width direction coincides with the left-right direction of the packaging machine. 2 at the bottom. In addition, a chain-type sheet feeding transmission mechanism 21 is provided to the sheet feeding motor 20 so as to rotate in the sheet feeding direction by the operation of the electric sheet feeding motor 20 disposed on the lower left side of the sheet roll mounting portion 2. Are linked through.

  As shown in FIGS. 1 to 5 and FIGS. 21 to 23, the drawer device 3 includes a left and right drawer arm 23 that swings integrally in the front-rear direction with a left-right interlocking shaft 22 provided at the rear lower portion of the body frame F as a fulcrum. It has.

  The left and right drawer arms 23 are moved from the standby position between the sheet roll mounting unit 2 and the mounting table 5 when the electric drawer motor 24 arranged in the lower left part of the body frame F is rotated forward. When the feeding motor 24 is swung toward the front sheet supply position and the pull-out motor 24 is operated in reverse, the left pull-out arm 23 is swung back from the front sheet supply position toward the rear standby position. Is connected to a drawer motor 24 via a bending-type drawer link mechanism 25. The posture is changed from the standing posture to the forward leaning posture by the supply swing from the standby position to the sheet supply position, and the posture is changed from the forward leaning posture to the standing posture by the return swing from the sheet supply position to the standby position. It is.

  At the upper ends of the left and right drawer arms 23, when the packaging sheet 1 having a set length is pulled out from the sheet roll R, a gripping mechanism 26 for supplying a packaging sheet is provided for gripping the left and right ends of the drawer roll start end of the sheet roll R. It is.

  The left and right gripping mechanisms 26 include a plate-like fixing member 27 at the upper end of each drawer arm 23, and a movable member that swings up and down with respect to the fixing member 27 below the fixing member 27 at the upper end portion of each drawer arm 23. 28 is deployed and configured. The left and right fixing members 27 are provided with an elastic body 29 such as rubber on the front bottom surface which is the gripping action portion. The left and right movable members 28 include a swing arm 31 that swings up and down with a left and right fulcrum pin 30 provided at the upper end of each drawer arm 23 as a fulcrum. A rod 32 protrudes inward, and a tension spring 33 that presses and urges the grip rod 32 against the elastic body 29 is constructed over the pull-out arm 23 and the swing arm 31. When the electric gripping motor 34 provided in the left drawer arm 23 is rotated forward, the left and right movable members 28 swing integrally from the lower grip release position to the upper grip position, When the motor 34 is operated in reverse, the left and right movable members 28 are moved to the gripping motor 34 so as to integrally swing from the upper gripping position toward the lower grip release position. Are linked through.

  That is, the right and left gripping mechanisms 26 are switched from the gripping release state to the gripping state by rotating the gripping motor 34 in the normal direction, and are switched from the gripping state to the gripping release state by operating the gripping motor 34 in the reverse direction. It is configured.

  The gripping transmission mechanism 35 applies rotational power from the gripping motor 34 to a left-right rotation shaft 37 that is installed over the lower ends of the left and right drawer arms 23 by a transmission gear (not shown) built in the transmission case 36. The rotation motion of the rotary shaft 37 is converted into the swing motion of the left and right movable members 28 by the left and right linkage arms 38 and the left and right linkage rods 39.

  With the above configuration, when the pulling device 3 operates the gripping motor 34 in a normal rotation state with the left and right pulling arms 23 positioned at the standby position, the left and right gripping mechanisms 26 are switched from the gripping release state to the gripping state. The drawer start end of the sheet roll R is gripped. Then, when the drawer motor 24 is rotated forward after the gripping, the left and right drawer arms 23 swing supply from the standby position toward the sheet supply position, and the supply roll swings the package of the set length from the sheet roll R. The sheet 1 is pulled out and supplied to the mounting table 5. When the gripping motor 34 is reversely operated after the supply, the left and right gripping mechanisms 26 are switched from the gripping state to the gripping release state, the gripping of the leading end portion of the packaging sheet 1 is released, and the pulled packaging sheet 1 is placed on the mounting table. 5 is placed. When the drawer motor 24 is reversely operated after the placement, the packaging sheet 1 pulled out by the left and right drawer arms 23 is returned and oscillated from the sheet supply position toward the standby position while being placed on the placement table 5. The left and right pull-out arms 23 stand by at the standby position in a state where the left and right gripping mechanisms 26 are maintained in the grip released state by the return swing.

  As shown in FIGS. 1 to 5 and FIGS. 20 to 23, the cutting device 4 has a fixed base 40 fixed between the sheet roll mounting portion 2 and the mounting base 5, and swings with respect to the fixed base 40. The presser 41 and the cutting tool 42 which are displaced are provided.

  The fixed base 40 is U-shaped in a side view and is extended over both left and right end portions of the machine body frame F, and has a horizontally long receiving portion 40A for receiving the front and rear of the cut portion of the packaging sheet 1 from below at the respective upper ends. Yes. At both left and right ends of the fixed base 40, notch portions 40 </ b> B are formed that allow the left and right grip rods 32 provided in the drawer device 3 to pass through in the grip-released state.

The presser 41 is formed in a U-shape in plan view, and is mounted on the body frame F so as to swing up and down about a left and right support shaft 43 inserted through both ends thereof. At the free end of the presser 41, the front and rear presses that press and fix the front and rear of the cut portion of the packaging sheet 1 received by the front and rear receiving parts 40A to the front and rear receiving parts 40A as the presser 41 descends and swings. The member 41A is equipped. The front and rear pressing members 41A are configured by sticking a horizontally long cushioning material such as a rubber sponge to the bottom surface of a left and right strip-shaped steel plate suspended from the free end of the presser 41.

  The cutting tool 42 is formed in a substantially U-shape in plan view, and is mounted on the body frame F so as to swing up and down about a left and right support shaft 43 that passes through both ends thereof. At the free end of the cutting tool 42, it is located between the front and rear pressing members 41A, and the front and rear pressing members 41A cut between the front and rear fixed portions of the packaging sheet 1 fixed by pressing against the front and rear receiving portions 40A. A horizontally long cutting blade 42A for cutting as a portion is provided. The cutting tool 42 swings downward from the upper standby position toward the lower limit position when the electric cutting motor 44 disposed on the lower left side of the sheet roll mounting portion 2 is rotated forward. The left end portion is linked to the cutting motor 44 via the linkage rod 45 and the linkage arm 46 so as to swing upwardly from the lower limit position toward the upper standby position when the 44 is operated in reverse.

  The presser 41 is cut so as to swing up and down integrally with the cutting tool 42 from the upper standby position to the presser position where the front and rear pressing members 41A press the packaging sheet 1 against the front and rear receiving portions 40A. It is placed on the tool 42. And in the state mounted in the cutting tool 42, the height position of the pressing action surface with respect to the blade edge of the cutting tool 42 is set so that the pressing action surface is located below the cutting edge of the cutting tool 42, and the presser As the left and right tension springs 47 for placing and urging the tool 41 on the cutting tool 42 are installed over the pressing tool 41 and the cutting tool 42, the packaging sheet 1 increases as the amount of downward swing from the pressing position of the cutting tool 42 increases. The pressing force for pressing the front and rear receiving portions 40A is increased, and the packaging sheet 1 can be more reliably fixed by the front and rear receiving portions 40A and the front and rear pressing members 41A.

  With the above-described configuration, when the cutting device 44 rotates the cutting motor 44 in the normal direction, the presser 41 is swung downward from the standby position together with the cutting tool 42, and the cutting tool 42 and the presser 41 are moved by this downward swing. When the presser position is reached, the front and rear pressing members 41A of the presser 41 are fixed by pressing the front and rear of the cutting portion of the packaging sheet 1 received by the front and rear receiving portions 40A of the fixing base 40 to the front and rear receiving portions 40A. To do. Then, after reaching the presser position, the presser 41 is received by the fixed base 40 so that only the cutting tool 42 swings downward. With this downward swing, the cutting tool 42 is set below the presser position. A cutting tool positioned between the front and rear fixed portions of the packaging sheet 1 fixed by the front and rear receiving portions 40A and the front and rear pressing members 41A by passing through the cutting position for cutting the sheet toward the lower limit position. Cut with 42 cutting blades 42A. Further, in the downward swing at this time, the presser 41 that presses the packaging sheet 1 against the front and rear receiving portions 40A increases as the downward swing amount from the pressing position of the cutting tool 42 increases due to the action of the left and right tension springs 47. Since the pressing force is increased and the front and rear positions of the cut portion in the packaging sheet 1 are firmly fixed, it becomes easy to cut the cut portion of the packaging sheet 1 with the cutting blade 42A. When the cutting motor 44 is reversely operated after the cutting tool 42 reaches the lower limit position, the cutting tool 42 at the lower limit position swings up and down and the presser 41 presses the packaging sheet 1 against the front and rear receiving portions 40A. After the pressing force becomes weak and the cutting tool 42 reaches the presser position by this upward swing, the presser 41 rises and swings to the standby position together with the cutting tool 42 and stands by at the standby position.

  Although not shown in the drawings, in order to make the presser 41 and the cutting tool 42 swing up and down smoothly by the operation of the cutting motor 44, the cutting tool 42 is formed in a U-shape in plan view and cut. You may comprise so that the both ends of the tool 42 may link with the motor 44 for a cutting | disconnection. As the linkage structure, for example, a rotating shaft that extends over both the left and right ends of the machine body frame F is provided, and this rotating shaft is linked to the cutting motor 44 by a chain type or gear type transmission mechanism. It is conceivable that both ends of the rotating shaft are linked to both ends of the cutting tool 42 via left and right linkage rods and linkage arms so that 42 swings.

  As shown in FIGS. 1 to 14, in the packaging means B, the mounting table 5 is configured such that the front end side, which is the work position side, is lower than the rear end side (lower toward the front end side) in a front-down inclined posture. It is arranged at the front upper end. In the center of the mounting table 5, a rubber packaging auxiliary member 48 having a plurality of elastically deformable tongue pieces 48A extending toward the center of the supply port 5A is provided. The packaging auxiliary member 48 presses the packaging sheet 1 against the surface of the crop a so that each tongue piece 48 </ b> A acts on the packaging sheet 1 supplied from the supply port 5 </ b> A together with the crop a so that the peripheral side of the packaging sheet 1 is moved. The agricultural product a is guided along with the packaging sheet 1 to the lower receiving table 6 while being pushed toward the convergence region set above the agricultural product a to be packaged. As a result, when the crop a carried to the vicinity of the supply port 5A is dropped and supplied to the supply port 5A, the crop a is put together with the packaging sheet 1 in a predetermined position of the receiving tray 6 without forcibly throwing or pushing the crop a. It can be in a state of receiving and supporting.

  On the front side of the top plate 17 located above the mounting table 5 is provided with a front falling inclined portion 17A that is inclined along the mounting table 5, and at the center of the front falling inclined portion 17A, Opposite to the supply port 5A, a circular supply port 17B that enables supply of the crop a from the supply port 5A of the mounting table 5 to the receiving table 6 is formed.

  As shown in FIGS. 2 to 14, the cradle 6 is configured by attaching a cushion material such as a rubber sponge to the surface of a sheet metal material that is formed in a dish shape in a cross shape in plan view. Further, the support shaft 49 of the front downward inclination posture is used as a fulcrum for the placement posture that tilts forward and downward along the mounting table 5 and the feed posture that swings leftward from this placement posture and tilts downward to the left. The support base 50 is equipped so that the posture can be switched. A tension spring 51 is installed over the cradle 6 and the support pedestal 50 to urge the cradle 6 back to the mounting posture.

  The elevating device 7 includes an elevating moving body 52 that moves up and down in a vertical direction with respect to the mounting table 5 in a forward and downward inclined posture along the mounting table 5 below the mounting table 5. The cradle 6 is placed so as to be movable together. A boss 52A that is slidably fitted to a guide rod 53 made of a round bar steel material fixedly arranged on the rear side of the machine body frame F in a vertical posture with respect to the mounting table 5 is welded to the rear end portion of the elevating moving body 52. It is. At the front end portion of the lifting and lowering moving body 52, a roller 55 is mounted so as to be able to roll on a guide rail 54 made of a channel material fixedly arranged on the front side of the body frame F in a vertical posture with respect to the mounting table 5. . When the electric lifting / lowering motor 56 arranged at the left and right intermediate rear portions of the machine body frame F is rotated forward, the lifting / lowering moving body 52 moves from the receiving position to the transfer position along the guide rod 53 and the guide rail 54. When the elevating motor 56 is reversely operated, the rear end of the elevating motor 56 is chain-typed so as to move upward from the transfer position toward the receiving position along the guide rod 53 and the guide rail 54. Are connected via a lifting transmission mechanism 57.

  The receiving position is set at the upper front side of the body frame F, which is directly below the supply port 5A, in order to enable the receiving unit 6 to receive the crop a before being supplied from the supply port 5A. The transfer position is a machine frame that is in the vicinity of the discharge start end of the discharge chute 9 located below the receiving position in order to enable transfer of the packaged crop a from the receiving platform 6 to the discharge chute 9. It is set at the center of F.

  In other words, the lifting device 7 is vertically moved with respect to the mounting table 5 by the lifting / lowering movement of the lifting / lowering moving body 52 by the operation of the lifting / lowering motor 56, along with the lifting / lowering moving body 52. The body frame F is mounted in a forward tilting posture along the vertical direction with respect to the mounting table 5 so as to move up and down in the direction.

  And when the lifting device 7 is equipped in a forward tilting posture in this way, the lower side of the lifting device 7 is located on the rear side away from the front working position, and using this, in this packaging machine, The front side outer plate 13 provided on the position side is closer to the lower side of the lower side 13A of the lifting device 7 and farther from the working position than the upper side 13B facing the mounting table 5, the opening / closing device 8 and the like. It is formed so as to be bent so that a recessed portion 13a that is recessed to the rear side can be formed on the lower side of the front side, which is the working position side of the packaging machine. It can be used as a footrest space when sitting and working (see FIGS. 1 and 2).

  In addition, the recessed part 13a formed in the lower side of the front side of the packaging machine is formed to have a vertical length that allows entry of a lower part from the knee of an operator sitting on a chair or the like. And the height of each supply port 5A, 17B of the mounting table 5 and the top plate 17 is a height at which an operator sitting on a chair or the like can easily supply the crop a to the supply ports 5A, 17B, for example, a chair. The height is set lower than the shoulder of the worker sitting in In addition, the bottom of the packaging machine is equipped with an artificially operated or electric jack, and the vertical length of the recess 13a is set according to the height of the chair or the length of the operator sitting on the chair from the knee to the bottom. You may comprise so that adjustment is possible.

  As shown in FIGS. 1 and 2, in this packaging machine, a discharge port 14A is formed in a rear outer plate 14 arranged on the opposite side of the working position, which enables the output of the crop a after packaging to the outside of the machine. It is. Further, in this packaging machine, the sheet roll placement unit 2 and the sheet supply motor 20 are disposed at the upper part thereafter, so that the rear side below the sheet roll placement unit 2 and the sheet supply motor 20 is provided. A space is formed on the lower side. Then, by utilizing this space, the rear side outer plate 14 is moved so that the lower side 14B approaches the lower side of the elevating device 7, and the upper side facing the sheet roll placement unit 2, the sheet supply motor 20, and the like. It is formed so that it is bent so as to be located on the front side of 14C, and thereby, a concave portion 14a recessed in the front side can be formed on the lower side on the rear side of the packaging machine. Use for foot space when exchanging the sheet roll R or a case placement space for a case for accommodating the packaged crop a discharged from the discharge port 14A formed on the lower side 14B of the outer plate 14 on the rear side. Can do.

  As shown in FIGS. 2 to 19, the opening / closing device 8 includes left and right sliding bodies 58 that slide in the left-right direction in a forward and downward inclined posture along the mounting table 5 between the mounting table 5 and the receiving table 6. Yes.

  At the rear end portion of each sliding body 58, a boss portion that is slidably fitted on a guide rod 59 made of a round bar steel material extending in the left-right direction across the left and right end portions of the body frame F on the rear upper portion of the body frame F. 58A is welded. The left and right sides of the sliding body 58 are movably engaged with the rear edge of the guide rail 60 made of a strip steel material extending in the left-right direction over the left and right ends of the body frame F at the upper front end of the body frame F. The roller 61 is equipped. Then, each sliding body 58, when the electric packaging motor 62 provided at the left rear portion of the body frame F is rotated forward, from the standby position set on the left and right ends of the body frame F to the center side of the body frame F. The wrapping motor 62 is slid in the closing direction toward the sealing cutting position set to, and when the wrapping motor 62 is operated in reverse, the wrapping motor 62 slides in the opening direction from the sealing cutting position toward the standby position. The link-type packaging transmission mechanism 63 is linked.

  The packaging transmission mechanism 63 converts the rotational power from the packaging motor 62 into the sliding motion of the right sliding body 58 by the linkage arm 64 and the linkage rod 65 and transmits the sliding motion to the right sliding body 58, and the right sliding body. The sliding movement of 58 is converted into a sliding movement of the left sliding body 58 (sliding movement in the direction opposite to the sliding movement of the right sliding body 58) by the reversing balance arm 66 and the connecting rod 67, and the left side. It is comprised so that it may be transmitted to the sliding body 58 of this.

  On the left and right sliding bodies 58, a shutter member 69 is mounted in the same forward and downward inclined posture as the sliding bodies 58 via front and rear spacers 68 fixed to the respective sliding bodies 58. The left and right sliding bodies 58 and the left and right shutter members 69 are interchangeable means (not shown) that allow relative sliding in the left-right direction within the set range between the corresponding sliding bodies 58 and the shutter members 69. When the left and right sliding bodies 58 slide in the closing direction by installing the front and rear tension springs 70 in the left-right direction across the corresponding sliding body 58 and the shutter member 69, When the left and right shutter members 69 slide in the closing direction via the spring 70, and the left and right sliding members 58 slide in the opening direction, the left and right shutter members 69 correspond to the accommodation limit of the accommodation means. The sliding body 58 and the sliding body 58 are configured to slide in the opening direction.

  Although illustration is omitted, the configuration of the accommodation means includes, for example, left and right rollers on the upper portion of the spacer 68, and left and right shutter members 69 with left and right elongated holes into which the left and right rollers are engaged. It is conceivable that the sliding member 58 and the shutter member 69 are formed to have a length that allows sliding in the left-right direction within a set range.

  In the left and right shutter members 69, the left shutter member 69 is positioned above the right shutter member 69, and the lower surface of the left shutter member 69 and the upper surface of the right shutter member 69 are in sliding contact with each other when opening and closing. They are arranged side by side. When the left and right shutter members 69 are slid in the opening direction, the left and right shutter members 69 are opened above the cradle 6 so that the cradle 6 faces the supply port 5A, and When the left and right shutter members 69 are slid in the closing direction, a recess 69A is formed which acts on the peripheral side of the packaging sheet 1. Each recess 69 </ b> A is formed in a substantially arcuate shape gathering in a sealing region set above the upper end of the crop a that wraps the peripheral side of the packaging sheet 1 with the closing operation of the left and right shutter members 69.

  In the left and right shutter members 69, a band plate-like pressing member 71 that slides integrally with the corresponding shutter member 69 is disposed at a position below the set interval. When the left and right shutter members 69 reach the closed position, the left and right pressing members 71 press and press the peripheral sides of the packaging sheet 1 near the upper end of the crop a to be packaged. The shutter member 69 is prevented from moving in the closing direction, and a gap 72 that holds the peripheral side of the packaging sheet 1 gathered in the sealing region in the sealing region is secured between the left and right shutter members 69. It is.

  Below the left and right pressing members 71, there are provided front and rear pushing arms 74 that swing back and forth along the left and right pressing members 71 with the front and rear support shafts 73 provided at the right end of the body frame F as fulcrums. It is. The front and rear pushing arms 74 are formed with cam holes 74A into which the rollers 75 provided in the right sliding body 58 are engaged. Each cam hole 74A is directed from the standby position where the front and rear pushing arms 74 are set at both front and rear ends of the machine frame F to the pushing position set on the center side of the machine frame F as the right sliding body 58 is closed. The corresponding rollers 75 are guided so that the front and rear pushing arms 74 return and swing from the pushing position toward the standby position as the right sliding body 58 opens. It is formed in the shape to do.

  That is, the front and rear pushing arms 74 gather the peripheral side of the packaging sheet 1 from the front and rear direction to the sealing region in conjunction with the closing operation of the left and right sliding bodies 58, and the left and right sliding bodies 58 are opened. In conjunction with the operation, the upper part of the cradle 6 is opened so that the cradle 6 faces the supply port 5A.

  Sealing heaters 76 are arranged at the front and rear intermediate portions of the left and right sliding bodies 58 so that they face each other. The upper part of the left heater 76 is equipped with a cutting blade 77 as a cutting means for cutting the surplus portion 1A of the packaging sheet 1 after packaging. The left and right heaters 76 are package sheets collected in the sealing area as the left and right shutter members 69 reach the closed position and the left and right sliding bodies 58 slide in the sealing cutting position (closing direction). The peripheral edge side of 1 is pressed and heat-sealed. The cutting blade 77 is a packaging sheet 1 gathered in the sealing region as the left and right sliding members 58 slide to the sealing cutting position (closing direction) after the left and right shutter members 69 reach the closed position. It is comprised so that the excess part 1A of the peripheral side may be cut | disconnected.

  With the above-described configuration, when the packaging motor 62 is rotated forward, the opening / closing device 8 slides the left and right shutter members 69 together with the left and right sliding bodies 58 in the closing direction, and moves back and forth in conjunction with the sliding. The pushing arm 74 is pushed and swung, and by these operations, the peripheral side of the packaging sheet 1 is gathered to the sealing region and the crop a is packaged with the packaging sheet 1. Then, the peripheral side of the packaging sheet 1 gathered in the sealing region is sealed by heat sealing by sliding the left and right sliding bodies 58 in the closing direction after the left and right shutter members 69 reach the closed position. At the same time, the excess portion 1A of the packaging sheet 1 is cut. When the packaging motor 62 is operated in reverse, the left and right shutter members 69 together with the left and right sliding bodies 58 slide in the opening direction, and the front and rear pushing arms 74 are returned and swung in conjunction with the sliding. Thus, by opening the top of the cradle 6 so that the cradle 6 faces the supply port 5A, the supply of the crop a from the supply port 5A to the cradle 6 is enabled.

  As shown in FIGS. 2 to 14, the support 50 for placing and supporting the cradle 6 has the crop a supplied to the cradle 6 together with the packaging sheet 1 that wraps the lower side of the crop a by the supply. A holding mechanism 78 that holds the pedestal 6 is mounted.

  The holding mechanism 78 includes front and rear holding arms 80 that swing back and forth with front and rear support shafts 79 mounted on the support base 50 in the left-right direction. The front and rear holding arms 80 have a cushioning material such as a rubber sponge attached to the upper end of the holding action. Further, it is oscillated and biased in the holding direction by a torsion spring 81 fitted on the front and rear support shafts 79. When the electric holding motor 82 provided on the support base 50 is rotated forward, the front and rear holding arms 80 are swung in the holding direction by the urging force of the torsion spring 81, and the holding motor 82 is reversely operated. Then, the lower end portions of the front and rear holding arms 80 are connected to the holding motor 82 via a bending mechanism 83 so that the front and rear holding arms 80 swing in the holding release direction against the urging force of the torsion spring 81. Are linked. The link mechanism 83 has a long hole 83 </ b> A that allows the front and rear holding arms 80 to swing in the holding direction by the biasing force of the torsion spring 81.

  With the configuration described above, the holding mechanism 78 allows the front and rear holding arms 80 to swing in the holding direction by the biasing force of the torsion spring 81 when the holding motor 82 is rotated forward. Thus, the front and rear holding arms 80 swing in the holding direction, and the crop a supplied to the cradle 6 is placed on the cradle 6 together with the packaging sheet 1 that wraps the lower side of the crop a regardless of the size. Hold in place. Further, when the holding motor 82 is operated in reverse, the link mechanism 83 bends and swings the front and rear holding arms 80 against the biasing force of the torsion spring 81 in the holding release direction. The holding of the crop a by the holding arm 80 is released.

  As shown in FIGS. 1 to 14, the discharge chute 9 guides a packaged crop a received from the cradle 6 to a discharge port 14 </ b> A formed in the rear outer plate 14 and discharges it from the discharge port 14 </ b> A to the outside. It is comprised so that it may do.

  The discharge port 14A is an upper and lower middle portion that is a relatively high position on the outer plate 14 on the rear side so that a large amount of unwrapped crop a discharged from the discharge port 14A can be accumulated around the discharge port 14A. Is formed.

  The discharge chute 9 is connected to the rear outer plate 14 via a left and right support shaft 84 disposed near the lower edge of the discharge port 14A, and the discharge start end of the discharge chute 9 is connected to the lifting device 7. By being mounted on a support member 85 that extends from the up-and-down moving body 52, it is configured to swing up and down about a left and right support shaft 84 in conjunction with the up-and-down movement of the up-and-down moving body 52. . Then, when the lifting / lowering moving body 52 rises to the receiving position, it is switched to a discharging posture that rises forward and tilts at a predetermined angle, and when the lifting / lowering moving body 52 is lowered to the transfer position, it is set to switch to the horizontal receiving posture. It is.

  Further, when the lifting / lowering moving body 52 descends to the transfer position, the body frame F contacts the cradle 6 from below so that the cradle 6 is placed against the urging force of the tension spring 51. It is equipped with a contact member 86 for switching from the receiving position 6 to the discharge chute 9 by switching to the delivery posture from the receiving stage 6.

  With the above configuration, when the lifting / lowering moving body 52 of the lifting / lowering device 7 is lowered toward the transfer position, the discharge chute 9 is switched from the discharging posture to the receiving posture in conjunction with the lowering, and the lifting / lowering movement at this time The cradle 6 is switched from the placing posture to the sending posture in conjunction with the lowering of the body 52, so that the crop a after packaging is received from the cradle 6. Thereafter, when the lifting / lowering moving body 52 of the lifting / lowering device 7 rises toward the receiving position, the receiving posture is switched to the discharging posture in conjunction with the rising, and the packaged crop a received from the receiving tray 6 is transferred to the discharging port 14A. It is guided and discharged out of the machine through the discharge port 14A.

  As shown in FIGS. 8, 9, 15 to 19, 24, and 25, the transport device 10 is mounted on the upper surface of the left shutter member 69 with a support shaft 87 provided at the upper left portion of the machine body frame F as a fulcrum. A transfer arm 88 as a swinging member that swings along is provided, and a gripping mechanism 89 as a gripping means is provided at the free end of the transfer arm 88.

  The transfer arm 88 is linked to the right slide 58 via a linkage link 90 as a mechanical transfer linkage so as to swing in conjunction with the sliding of the right slide 58. By this linkage, when the right sliding body 58 is positioned at the standby position, the gripping mechanism 89 is positioned at the discharge position positioned at the left front end of the packaging machine, and the right sliding body 58 is positioned at the sealing cutting position. When the gripping mechanism 89 is positioned, the gripping mechanism 89 is positioned at the standby position where the gripping mechanism 89 is positioned in the vicinity of the rear left side of the sealing region, and interlocked with the sliding of the right sliding body 58 from the standby position to the sealing cutting position. The return swing from the discharge position toward the standby position, and the conveyance swing from the standby position toward the discharge position in conjunction with the sliding of the right sliding body 58 from the sealing cutting position to the standby position. It is.

  The gripping mechanism 89 includes a fixed finger 91 at the free end of the transport arm 88, and the gripping position and the grip release with the support shaft 92 as a fulcrum at a position closer to the free end than the fixed finger 91 at the free end of the transport arm 88. A movable finger 93 that swings along the upper surfaces of the left and right shutter members 69 is provided. When the transfer arm 88 swings between the discharge position and the standby position, the movable finger 93 is switched to the gripping state positioned at the gripping position, so that the movable finger 93 does not pass through the sealing region, and the movable finger 93 Is configured such that the movable finger 93 passes through the sealing region by switching to the grip release state positioned at the grip release position.

  The linkage link 90 is bent so as to bypass the opening region formed by the concave portions 69A of the left and right shutter members 69 regardless of the displacement when the right sliding body 58 and the transport arm 88 are interlocked.

  The transport apparatus 10 includes a cam-type movable finger operation mechanism 94 as an operation means for swinging the movable finger 93 in conjunction with the swing of the transport arm 88. The movable finger operation mechanism 94 includes a V-shaped linkage arm 96 that swings in a direction along the mounting table 5 with a support shaft 95 provided in the transport arm 88 as a fulcrum. A cam follower 97 is attached to one end of the linkage arm 96, and the cam follower 97 is mounted on the transfer arm 88 so as to be displaceable.

  A linkage hole (not shown) is formed in the other end of the linkage arm 96, and a linkage rod 98 pin-connected to the movable finger 93 is inserted into this linkage hole. The linkage rod 98 is provided with a receiving portion 98A for receiving the free end of the linkage arm 96, and a push spring 99 that externally fits the free end of the linkage arm 96 against the receiving portion 98A. A machine that links the cam follower 97 and the movable finger 93 so that the movable finger 93 is opened and closed in conjunction with the displacement of the cam follower 97 by the linkage arm 96, the linkage rod 98, the receiving portion 98A, and the push spring 99. The gripping linkage means 100 of the type is configured.

  The cam follower 97 is engaged with a cam groove 101 </ b> A formed as a first cam on the fixed plate 101 arranged in a forward downward inclined posture along the mounting table 5 immediately above the linkage arm 96. Further, a torsion spring 102 that contacts and urges the cam follower 97 against the cam groove 101A is externally fitted to the support shaft 95.

  In the cam groove 101A, the standby grip release area 101a that guides the cam follower 97 so that the movable finger 93 is positioned at the grip release position regardless of the swing of the transport arm 88, is movable along with the transport swing of the transport arm 88. A grip operation area 101b for guiding the cam follower 97 so that the finger 93 swings rapidly from the grip release position to the grip position, and the cam follower 97 so that the movable finger 93 is positioned at the grip position regardless of the swing of the transfer arm 88. The movable finger 93 gradually swings from the gripping position to the grip release position as the gripping region 101c to be guided and the transport arm 88 swings, and the movable finger 93 grips as the transport arm 88 returns and swings. The operation area 101d for guiding the cam follower 97 so as to gradually swing from the release position to the gripping position, and the movable finger 9 regardless of the swing of the transport arm 88. There the discharge gripper release region 101e for guiding the cam follower 97 so as to be located in the grip release position, is formed so as to be continued in this order from the rear side of the packaging machine towards the front side.

At the rear of the fixed plate 101, the cam follower 97 is prevented from coming into contact with the standby grip release area 101a and the grip operation area 101b of the cam groove 101A, and the movable finger 93 is held at the grip position regardless of the swing of the transport arm 88. A guide plate 103 as a second cam for guiding the cam follower 97 is provided. The guide plate 103 swings about a support shaft 104 provided at the rear end of the fixed plate 101 as a fulcrum. Then, it is configured to be positioned at the guide position where the cam follower 97 is guided by contacting the fixing pin 106 provided on the fixed plate 101 by the action of the tension spring 105 installed over the fixed plate 101 and the guide plate 103. It is. Further, when the cam follower 97 moves from the gripping operation area 101b to the gripping area 101c as the transport arm 88 swings, the cam follower 97 comes out of contact with the cam follower 97 against the biasing force of the tension spring 105. By swinging, the cam follower 97 is configured to be allowed to move from the grip operation area 101b to the grip area 101c.

  At the rear of the guide plate 103, there is formed a recess 103A that allows the cam follower 97 to move from the guide region of the guide plate 103 to the standby grip release region 101a of the cam groove 101A when the transport arm 88 is positioned at the standby position. It is. Then, the cam follower 97 moves from the guide region of the guide plate 103 through the recess 103A to the standby grip release region 101a of the cam groove 101A, so that the movable finger 93 moves from the grip position to the grip release position. It is.

  The cam follower 97 moves in the standby grip release region 101a of the cam groove 101A while the transport arm 88 swings in the standby region from the standby position until the movable finger 93 of the gripping mechanism 89 starts to pass through the sealing region. To do. While the transfer arm 88 moves and swings in the holding area where the movable finger 93 of the holding mechanism 89 passes the sealing area following the standby area, the transfer arm 88 moves from the standby holding release area 101a of the cam groove 101A to the holding operation area 101b. Then, the grip operation area 101b is moved. While the transport arm 88 is transported and swung in the discharge area extending from the discharge position following the grip area, the grip area 101c, the operation area 101d, and the discharge grip releasing area 101e of the cam groove 101A are moved in that order. While the transport arm 88 returns and swings in the discharge region, the discharge grip release region 101e, the operation region 101d, and the grip region 101c of the cam groove 101A are moved in that order. While the transfer arm 88 returns and swings in the gripping area and the standby area, the guide area of the guide plate 103 is moved, and as the transfer arm 88 reaches the standby position by the return swing, the guide area of the guide plate 103 is moved. To the standby grip release area 101a of the cam groove 101A.

  With the above-described configuration, the transport device 10 performs a return process in which the transport arm 88 returns and swings in conjunction with the closing operation of the right sliding body 58, and the transport arm 88 operates in conjunction with the opening operation of the right sliding body 58. Performs a discharging process in which the carrier swings. In the return step, the gripping mechanism 89 maintains the grip release state while the transfer arm 88 is returned and swung on the discharge end side of the discharge area (hereinafter referred to as the discharge end area), and the transfer arm 88 is in the discharge area. While returning and swinging on the discharge intermediate side (hereinafter referred to as the discharge intermediate region), the gripping mechanism 89 gradually switches from the grip release state to the gripping state, and the transport arm 88 moves to the discharge start end side (hereinafter referred to as the discharge start end) of the discharge region. The gripping mechanism 89 maintains the gripping state during return swinging between the gripping region and the standby region. Then, as the transport arm 88 reaches the standby position, the gripping mechanism 89 switches from the gripping state to the grip releasing state. In the discharging process, the gripping mechanism 89 moves toward the sealing region while maintaining the grip released state while the transport arm 88 swings and transports in the standby region. While the transport arm 88 is transported and swung in the gripping region, the gripping mechanism 89 passes through the sealing region while switching from the gripping release state to the gripping state. The gripping mechanism 89 maintains the gripping state while the transport arm 88 swings in the discharge start end region, and the gripping mechanism 89 gradually changes from the gripping state to the grip releasing state while the transport arm 88 swings in the discharge intermediate region. The gripping mechanism 89 maintains the grip release state while the transport arm 88 swings and transports in the discharge end region.

  The discharge device 11 includes a discharge arm 108 that swings along the lower surface of the transfer arm 88 about a support shaft 107 provided at the left front portion of the machine body frame F over a standby position and a discharge position.

  The discharge arm 108 includes a cam follower 109 that comes into contact with a cam portion 88A provided in the transfer arm 88 when the transfer arm 88 swings in the discharge end region. Further, the cam follower 109 is brought into contact with the cam portion 88A while returning to the standby position by the urging force of the tension spring 110 installed over the body frame F and the discharge arm 108 and while the transfer arm 88 swings in the discharge end region. This state is configured to swing in conjunction with the transfer arm 88 while maintaining the state. Further, the support shaft 107 is arranged on the discharge position (discharge position) side of the support shaft 87 of the transport arm 88, and the distance between the support shaft 107 and the cam follower 109 is set so that the support shaft 87 and the cam of the transport arm 88 are separated from each other. By setting it to be smaller than the interval with the portion 88A, the gripping mechanism 89 of the transfer arm 88 is allowed to pass in front of the free end in the state of being located at the standby position. In the state of interlocking swinging, the free end is directly below the gripping mechanism 89 by swinging at a speed faster than the swinging speed of the transfer arm 88 and at an angle larger than the swinging angle of the transfer arm 88. It is configured so that a state of passing the gripping mechanism 89 by passing through can be obtained.

  That is, the discharge arm 108 swings over the gripping mechanism 89 along the opening / closing device 8 by the cam portion 88A, the cam follower 109, and the tension spring 110 in conjunction with the swing in the discharge end region of the transport arm 88. In this way, a mechanical discharge linking means 111 that links the discharge arm 108 to the transport arm 88 is configured.

  With this configuration, when the transport arm 88 that swings and moves reaches the discharge end region, the discharge device 11 is connected to the swing end of the transport arm 88 in the discharge end region. The discharge swing from the standby position to the discharge position (passing swing) so as to obtain a state of passing over the gripping mechanism 89 of the transport arm 88 preceded by the finger from the fingertip side of the gripping mechanism 89 to the fingertip side. ) By this overtaking swing, the surplus portion 1A of the packaging sheet 1 conveyed to the discharge position at the upper left front end by the conveying device 10 is discharged out of the apparatus from the discharge port 15A formed at the upper front end of the left outer plate 15. be able to. Thereafter, when the transport arm 88 swings back in the discharge end region, the discharge arm 108 moves in synchronization with this swing, and the fingertip of the gripping mechanism 89 directly below the gripping mechanism 89 of the transport arm 88 preceded by the free end. From the discharge position to the standby position (reverse swing) from the release position (passing swing) so as to obtain a state of passing from the side to the fingertip side, and waiting at the standby position.

  Although not shown, the left side of the packaging machine is equipped with a mounting portion that allows the collection net to be attached and detached. By using this mounting portion to equip the collection net, the discharge arm 108 releases the discharge port. The surplus part 1A of the packaging sheet 1 discharged from 15A to the left side of the packaging machine can be collected in the collection net.

  As shown in FIG. 26, the control means E is positioned between the output of the start switch 112 and the stop switch 113 provided at the upper right front end of the machine body frame F, between the cutting device 4 and the mounting table 5 and on the sheet roll R. A packaging machine based on the output of the sheet supply sensor 114 composed of a photoelectric sensor for detecting a photoelectric tube mark printed for each set length, the output of a packaging sensor 115 composed of a photoelectric sensor for detecting a crop a to be packaged, etc. The operation is controlled.

  Hereinafter, the control operation of the control means E and the operation of the packaging machine will be briefly described.

  The control means E starts the packaging control operation each time the operator presses the start switch 112. In this control operation, first, it is determined whether or not the packaging sheet 1 is placed on the placement table 5 based on the output of the sheet supply sensor 114, and based on the output of the packaging sensor 115. It is determined whether or not the crop a is supplied. When the packaging sheet 1 is not placed on the placing table 5 and the crop a is not supplied to the receiving table 6, the packaging sheet supply control is performed. When the packaging sheet 1 is not placed on the placing table 5, but when the crop a is supplied to the receiving table 6, the packaging control and the packaging sheet supply control are performed in that order. When the packaging sheet 1 is placed on the placing table 5 and the crop a is not supplied to the receiving table 6, it is determined that the start switch 112 is erroneously operated, and the packaging control operation is terminated.

  In the packaging sheet supply control, first, the gripping motor 34 is rotated forward, and the left and right ends of the drawing start end portion of the sheet roll R are gripped by the left and right gripping mechanisms 26 located at the standby position.

  When gripping of the packaging sheet 1 is completed, the sheet supply motor 20 and the drawer motor 24 are rotated forward to supply the packaging sheet 1 to the mounting table 5 by the front and rear support rollers 19 and the left and right drawer arms 23. . At this time, the operations of the sheet supply motor 20 and the drawer motor 24 are controlled so that the supply speed of the packaging sheet 1 by the front and rear support rollers 19 and the supply speed of the packaging sheet 1 by the left and right drawer arms 23 are the same. .

  When the sheet supply sensor 114 detects the photoelectric tube mark of the sheet roll R during the supply of the packaging sheet to the mounting table 5, it detects that the supply length of the packaging sheet 1 to the mounting table 5 has reached the set length, Based on this detection, the sheet supply motor 20 and the pull-out motor 24 are stopped, and the supply of the packaging sheet 1 to the mounting table 5 by the front and rear support rollers 19 and the left and right pull-out arms 23 is stopped. The holding motor 34 is reversely operated to release the gripping of the packaging sheet 1 by the right and left gripping mechanisms 26 and the packaging sheet 1 is placed on the mounting table 5. Further, the cutting motor 44 is forwardly operated to perform loading. The packaging sheet 1 supplied to the pedestal 5 is cut to a set length by the downward swing of the cutting tool 42 and the holding tool 41 from the standby position.

  When the cutting of the packaging sheet 1 is completed, the cutting motor 44 is reversely operated to return the cutting tool 42 and the presser 41 to the standby position, and then the pulling motor 24 is reversely operated to wait for the left and right pulling arms 23. Return to position.

  When the left and right pull-out arms 23 return to the standby position, the packaging control operation is finished together with the packaging sheet supply control.

  On the other hand, in the packaging control, first, the holding motor 82 is rotated forward to hold the crop a and the packaging sheet 1 artificially supplied to the receiving base 6 in the supply posture on the receiving base by the front and rear holding arms 80. .

  When the holding on the cradle is completed, the elevating motor 56 is rotated forward to lower the crop a and the packaging sheet 1 together with the elevating moving body 52 and the cradle 6. Then, the discharge chute 9 in the discharge posture starts to swing downward in conjunction with the lowering of the up-and-down moving body 52 at this time. Further, as the crop a and the packaging sheet 1 are lowered at this time, the respective tongue pieces 48A of the packaging auxiliary member 48 press the peripheral side of the packaging sheet 1 against the upper side of the crop a by their elasticity. Squeezed to the focusing area above.

  If the packaging sensor 115 does not detect the crop a while the lifting / lowering body 52 or the like is descending, it is determined that the lifting / lowering moving body 52 or the like has been lowered to a packaging position suitable for the size of the crop a, and based on this determination. After the forward rotation operation of the lifting motor 56 is temporarily stopped, the packaging motor 62 is rotated forward to perform the packaging process.

In this packaging process, the left and right shutter members 69 slide in the closing direction together with the left and right sliding bodies 58 by the forward rotation operation of the packaging motor 62 , and the front and rear pushing arms 74 are interlocked with the right sliding body 58. By swaying and swinging, the peripheral side of the packaging sheet 1 is gathered together in the sealing region above the upper end of the crop a. Then, after the left and right shutter members 69 reach the closed position and gather the peripheral side of the packaging sheet 1 in the sealing area, the left and right sliding bodies 58 are further closed in the closing direction by the interchange of each accommodation means. As a result of this sliding, the heaters 76 provided on the left and right sliding bodies 58 are heat-sealed by pressing the peripheral side of the packaging sheet 1 gathered in the sealing region, A cutting blade 77 provided on the left sliding body 58 cuts the surplus portion 1A of the packaging sheet 1. Thereby, the packaging of the crop a is completed.

  During the packaging operation, the transfer arm 88 swings back from the discharge position toward the standby position in conjunction with the sliding movement of the right sliding body 58 in the closing direction. In conjunction with the return swing, the discharge arm 108 swings back from the discharge position toward the standby position. In the return swing of the transport arm 88, the movable finger operation mechanism 94 interlocked with the return swing is operated until the transport arm 88 passes through the discharge end region and reaches the standby position. The mechanism 89 is maintained in a gripping state so that the movable finger 93 of the gripping mechanism 89 does not pass through the sealing region. This makes it difficult for the gripping mechanism 89 to come into contact with the peripheral side of the packaging sheet 1 gathered toward the sealing region by the left and right shutter members 69 and the like. As a result, it is possible to prevent the occurrence of defective packaging due to the gripping mechanism 89 of the transport arm 88 that swings back and forth being caught on the peripheral side of the packaging sheet 1 being packaged.

  When the packaging process is completed, the holding motor 82 is reversely operated to release the holding of the crop a and the packaging sheet 1 by the front and rear holding arms 80 and the forward / lowering motor 56 is rotated forward. It restarts and the agricultural product a after packaging with the raising / lowering moving body 52 and the receiving stand 6 is lowered to the transfer position. Then, at this time, the discharge chute 9 is again lowered and swung in conjunction with the lowering to switch to the receiving posture, and the receiving base 6 contacts the contact member 86 and is sent out from the mounting posture. By switching to the posture, the packaged crop a is transferred from the receiving tray 6 to the discharge start end of the discharge chute 9.

  When this transfer is completed, the elevating motor 56 is reversely operated to raise the elevating moving body 52 and the cradle 6 to the receiving position. In this rise, the discharge chute 9 rises and swings in conjunction with the rise and switches from the receiving posture to the discharge posture, whereby the packaged crop a transferred to the discharge start end is transferred to the discharge port 14A. It is guided and discharged out of the machine through the discharge port 14A. Further, the cradle 6 releases the contact with the contact member 86 and is switched from the delivery posture to the placement posture by the urging force of the tension spring 51.

  At the same time, the packaging motor 62 is reversely operated to slide the left and right sliding bodies 58 in the opening direction, thereby returning the left and right sliding bodies 58 and the left and right shutter members 69 to the standby position. When the front and rear pushing arms 74 return to the standby position in conjunction with the right-side sliding body 58, the upper side of the cradle 6 is opened, and the crop a can be supplied to the cradle 6.

  At this time, the transfer arm 88 swings from the standby position toward the discharge position in conjunction with the right sliding body 58. In this transfer swing, the movable finger operation mechanism 94 interlocks with the transfer swing. When the transfer arm 88 is moving in the standby area, the holding mechanism 89 is maintained in the release state, and when the transfer arm 88 is moving in the hold area, the holding mechanism 89 is released. Thus, the movable finger 93 of the gripping mechanism 89 is switched from the grip releasing position to the gripping position when passing through the sealing region. Thereby, the surplus part 1A of the cut packaging sheet 1 located in the sealing region can be gripped by the gripping mechanism 89. Thereafter, the gripping mechanism 89 is maintained in the gripping state while the transfer arm 88 is moving in the discharge start end region, and the gripping mechanism 89 is released from the gripping state when the transfer arm 88 is moving in the discharge intermediate region. The gripping mechanism 89 is maintained in the grip release state while the transfer arm 88 is moving in the discharge end region. In the discharge end region, the discharge arm 108 moves from the fingertip side of the gripping mechanism 89 directly below the gripping mechanism 89 of the transporting arm 88 in conjunction with the swinging motion of the transport arm 88. The free end portion of the discharge arm 108 collides with the surplus portion 1A of the packaging sheet 1 immediately after releasing the gripping by the gripping mechanism 89 due to the swinging so as to pass by the side and overtake. The excess part 1A of the sheet 1 is discharged to the left side of the packaging machine.

  Here, the operation of the left and right shutter members 69 immediately after the transfer arm 88 starts to swing in conjunction with the right slide 58 will be described in detail. Thus, the transport arm 88 swings and the left and right shutter members 69 are positioned at the closed position by the interchange of the interchange means interposed between the left and right sliding bodies 58 and the package sheet after cutting. 1 surplus portion 1A is held in the sealing region. When the gripping mechanism 89 of the transport arm 88 approaches the surplus part 1A after cutting and the flexibility of the accommodation means is reduced, the gripping mechanism 89 of the transport arm 88 approaches the surplus part 1A after cutting. Along with this, the left and right sliding bodies 58 slide in the opening direction to weaken the holding of the surplus part 1A after cutting in the sealing region, and the gripping mechanism 89 of the transport arm 88 acts on the surplus part 1A after cutting. Accordingly, the holding of the surplus portion 1A in the sealing region is released.

  That is, the right sliding body 58 and the transport arm 88 are delayed by delaying sliding of the left and right shutter members 69 in the opening direction with respect to sliding in the opening direction of the left and right sliding bodies 58 by the action of each accommodation means. However, the surplus part 1A after the cutting from the left and right shutter members 69 to the gripping mechanism 89 can be delivered smoothly and reliably.

  And when the raising / lowering moving body 52 and the receiving stand 6 are raised to the receiving position and the left and right sliding bodies 58 are returned to the standby position, the packaging sheet supply control is started together with the end of the packaging control, and the packaging sheet supply control is completed. At the same time, the control operation for packaging ends.

  When the pressing operation of the stop switch 113 is detected during the packaging control, the packaging control operation is terminated without performing the packaging sheet supply control when the packaging control is terminated.

  In short, in this packaging machine, the packaging means B is arranged on the front side, which is the working position side facing the worker supplying the crop a from the supply ports 5A, 17B to the receiving tray 6, and on the upper side of the packaging means B. By setting the posture of the mounting table 5 and the opening / closing device 8 to be deployed, and the front side of the top plate 17 covering the mounting table 5 to a front downward inclination posture that becomes lower toward the front side that is the working position side, It becomes easy to manually supply the crop a from the supply ports 5A and 17B from the work position to the receiving tray 6 in the packaging machine, thereby reducing the labor required for the supply work for manually supplying the crop a to the packaging machine. it can.

  In addition, the lifting device 7 of the packaging means B is installed in a forward tilted posture, and the front outer plate 13 to be deployed on the working position side is utilized using the space in the lower front portion of the lifting device 7 obtained thereby. By bending so that the lower side 13A is located on the rear side farther from the working position than the upper side 13B, the operator sits on a chair or the like and works on the lower side on the front side, which is the working position side of the packaging machine. A space (recess 13a) that can be used as a footrest space in the case is secured, so that even in the work in the sitting position, it is possible to approach the packaging machine without difficulty, and the work position in front of the machine body From the supply ports 5A and 17B, the crop a can be easily supplied manually to the cradle 6 in the packaging machine. As a result, the labor required for supplying the crop a manually to the packaging machine can be further reduced.

  Further, by configuring the discharge chute 9 to be switched between a discharge posture and a receiving posture in conjunction with the lifting operation of the lifting device 7, a transfer position and a discharge position for transferring the crop a after packaging to the discharge chute 9. Even when the height position of the outlet 14A is the same or substantially the same, when discharging the packaged crop a to the outside of the machine, the discharge chute 9 can be guided to discharge the packaged crop a to the discharge port 14A. It is possible to switch to a tilted posture and smoothly discharge the crop a after packaging.

  In other words, it is long in the vertical direction for fixedly deploying the discharge chute 9 in an inclined position capable of guiding the discharge of the crop a in the region below the transfer position where the crop a after packaging is transferred to the discharge chute 9 in the packaging machine. Since there is no need to secure an area, the overall height of the packaging machine can be lowered while increasing the height position of the discharge port 14A, thereby increasing the amount of crops that can be stored around the discharge port 14A. While increasing the frequency of removing the packaged crop a from the periphery of the discharge port 14A, the crop from the supply ports 17B and 5A formed in the upper part of the packaging machine to the cradle 6 in the packaging machine It is possible to facilitate the artificial supply of a. Further, since it is not necessary to equip a dedicated electric motor for switching the posture of the discharge chute 9, the configuration can be simplified and the cost can be reduced.

  The supply means A and the packaging means B are arranged behind the packaging means B on the side away from the work position so that the supply means A and the packaging means B are aligned in the front-rear direction which is the perspective direction with respect to the work position, Since the packaging sheet 1 is drawn out and supplied from the rear side of the mounting table 5 toward the mounting table 5, the sheet roll R can be equipped in a horizontal position behind the mounting table 5, thereby supplying It is possible to appropriately and smoothly pull out and supply the set length of the packaging sheet 1 from the sheet roll R to the mounting table 5 by means A.

  Further, the lateral width of the packaging machine can be reduced as compared with the case where the supply means A and the packaging means B are arranged side by side in the left-right direction, and the mounting table 5 of the packaging means B is tilted forward and inclined. By equipping, the length of the packaging machine can be shortened while the supply means A and the packaging means B are arranged side by side in the front-rear direction.

  Moreover, it is obtained by arranging the mounting table 5 and the opening / closing device 8 on the upper side of the packaging means B in a downwardly inclined posture that becomes lower toward the front side that is the work position side, and equipped with the lifting device 7 in a forwardly inclined posture. The space in the rear upper part of the lifting device 7 to be used can be used as an arrangement space for the sheet roll mounting portion 2 and the cutting device 4 in the supply means A, and thereby the packaging means while reducing the overall height of the packaging machine The supply means A can be easily deployed behind B, and the packaging machine can be downsized.

In addition, in the discharge means D, the transport arm 88 reciprocally swings between the standby position and the discharge position in conjunction with the opening / closing operation of the packaging opening / closing device 8, and in conjunction with the swing of the transport arm 88. The gripping mechanism 89 is appropriately switched between the gripping state and the gripping release state, and the discharge arm 108 reciprocally swings between the standby position and the discharge position in conjunction with the swing of the transfer arm 88 in the discharge end region. Therefore, the surplus portion 1A of the packaging sheet 1 cut after packaging can be reduced while reducing the cost as compared with the case where a dedicated electric motor for operating the transport arm 88, the gripping mechanism 89, and the discharge arm 108 is provided. It can be transported to the discharge position and discharged out of the machine from the discharge position.

  Then, in the discharging process in which the transport arm 88 is transported and swung, the movable finger 93 of the gripping mechanism 89 passes through the sealing region, so that the surplus portion of the packaging sheet 1 after cutting that positions the movable finger 93 in the sealing region. By acting on 1A, the surplus part 1A can be gripped by the movable finger 93 and the fixed finger 91, whereby the surplus part 1A after cutting can be reliably conveyed from the sealing region to the discharge position. .

  In the return step in which the transport arm 88 returns and swings, the packaging sheet 1 gathered toward the sealing region by the closing operation of the opening / closing device 8 because the movable finger 93 of the gripping mechanism 89 does not pass through the sealing region. The movable finger 93 can be made difficult to come into contact with the peripheral side of the packaging sheet, and defective packaging caused by the movable finger 93 being moved back to the peripheral side of the packaging sheet 1 gathered toward the sealing region, etc. Can be prevented.

  Moreover, in the opening / closing device 8, the left and right shutter members 69 gathering the peripheral side of the packaging sheet 1 toward the sealing region, and the left shutter member 69 where the discharge means D is located are above the right shutter member 69. Since they are arranged side by side so as to be positioned, the peripheral side of the packaging sheet 1 gathered toward the sealing region by the left and right shutter members 69 is the right side opposite to the left side where the discharge means D is located. Accordingly, the movable finger 93 can be further prevented from coming into contact with the peripheral side of the packaging sheet 1 gathered toward the sealing region by the closing operation of the opening / closing device 8.

  When the transfer arm 88 swings in conjunction with the opening operation of the right sliding body 58, the left and right sides of the transfer arm 88 are delayed from the start of the swinging of the transfer arm 88 by the action of the accommodation means provided in the opening / closing device 8. The shutter member 69 starts to open, whereby the left and right shutter members 69 hold the excess portion 1A of the cut packaging sheet 1 in the sealing region in the discharging process in which the transport arm 88 is transported and swung. As a result, it is possible to smoothly and reliably deliver the surplus portion 1A after cutting from the left and right shutter members 69 to the gripping mechanism 89 of the transport arm 88.

    [Another embodiment]

[1] The packaging machine may include an automatic supply device that automatically supplies the crop a to the receiving tray 6 from the supply port 5A.

[2] As a sealing method of the packaging sheet 1 employed in the packaging machine, a heat sealing method is adopted in which the peripheral side of the packaging sheet 1 gathered in the sealing region is pressed by a sealing heater 76 and heat-sealed. And you may make it employ | adopt the tape sealing system which affixes and seals the adhesive tape for sealing on the peripheral side of the packaging sheet 1 gathered together in the sealing area | region.

[3] The mounting table 5 may be equipped in a horizontal posture.

[4] The discharging means D may be configured to reciprocate between the discharging position and the standby position in conjunction with the opening / closing operation of the opening / closing means 8. Further, it may be configured to move around the discharge position and the standby position in conjunction with the opening / closing operation of the opening / closing means 8.

[5] The gripping means 89 may be configured to switch between a gripping state and a gripping release state by sliding the movable finger 93 with respect to the fixed finger 91.

[6] The operation means 94 may be configured to be electrically operated such that the movable finger 93 is opened and closed with respect to the fixed finger 91 by the operation of an electric actuator such as an electric cylinder.

[7] In the operation means 94, the first cam 101A may be constituted by a guide plate, and the second cam 103 may be constituted by a cam groove.

[8] The discharge means D is not provided with the discharge means 108, and the excess portion 1A of the cut packaging sheet 1 is dropped and discharged from the discharge position, or discharged to the outside due to inertia when transported to the discharge position. It may be configured as described above.

[9] The discharge means 108 may be configured to be electrically driven so as to be released by the operation of an electric actuator such as an electric cylinder.

  The packaging surplus part discharge structure of the packaging machine according to the present invention is configured to wrap agricultural products such as lettuce, cabbage or broccoli supplied from the upper supply port with a packaging sheet, and to cut the surplus part of the packaging sheet after packaging. The present invention can be applied to a configured agricultural packaging machine.

DESCRIPTION OF SYMBOLS 1 Packaging sheet 1A Surplus part 5 Mounting base 5A Supply port 6 Receiving base 8 Opening / closing means 77 Cutting means 88 Oscillating member 89 Holding means 90 Conveying means 91 Fixed finger 93 Moving finger 94 Operating means 97 Cam follower 100 Holding means 101A First cam 103 Second cam 108 Discharge means 111 Discharge linkage means D Discharge means a crop

Claims (3)

A mounting table in which a supply port is formed, a receiving table for receiving a crop supplied from the supply port together with a packaging sheet mounted on the mounting table, and the supply in an opening operation between the mounting table and the receiving table The supply of the crop from the mouth to the cradle is enabled, and the peripheral side of the packaging sheet is brought together in the sealing region above the upper end of the crop by the closing operation between the mounting table and the cradle. The packaging surplus part discharge | emission of the packaging machine provided with the opening / closing means which wraps agricultural products with the said packaging sheet by sealing, and equipped with the cutting | disconnection means which cut | disconnects the surplus part of the said packaging sheet after packaging located in the said sealing area | region In structure
A discharge means for gripping and transporting the excess portion after cutting located in the sealing region to a predetermined discharge position and discharging the excess portion from the discharge position to the outside of the machine;
In conjunction with the closing operation of the opening / closing means, the discharging means returns from the discharging position to the standby position on the upper side in the transport direction than the sealing area, and the discharging means is interlocked with the opening operation of the opening / closing means. The discharge means is linked to the opening / closing means via a mechanical transfer linkage so that the means is moved from the standby position to the discharge position .
The discharging means is configured to be a swing type provided with a gripping means for gripping the surplus portion after cutting at a free end of a swinging member that swings back and forth along the opening / closing means over the standby position and the discharge position. And the gripping means is positioned on the free end side of the swinging member with respect to the fixed finger provided at the free end portion of the swinging member, and is positioned along the open / close means with respect to the fixed finger. The movable finger moves the sealing region by the swinging of the swinging member in the release state of the gripping means in which the movable finger is moved to the open side. In the gripping state of the gripping means that has passed and moved the movable finger to the closed side, the movable finger is configured not to pass through the sealing region by swinging of the swinging member,
In the discharging process in which the discharging means is transported and moved to the discharging means, the movable finger passes through the sealing area, and in the returning process in which the discharging means is moved back, the movable finger moves the sealing area. The packaging surplus part discharge structure of the packaging machine provided with the operation means which operates the said movable finger according to the moving direction of the said discharge means so that it may not pass . A cam follower provided with the operating means as being displaceable on the swing member, and a mechanical gripping linkage that links the cam follower and the movable finger so that the movable finger opens and closes in conjunction with the displacement of the cam follower. Means and a first cam and a second cam for guiding the cam follower as the swinging member swings, and in the discharging step, the cam follower is moved as the first cam along with the swinging of the swinging member. The movable finger passes through the sealing region by displacing the cam follower, and the cam follower is displaced along the second cam as the swing member swings in the return step. The packaging surplus part discharging structure of the packaging machine according to claim 1 , wherein the movable finger is configured to be operated by a cam so that the movable finger does not pass through the sealing region. The discharge means includes discharge means for discharging the surplus part after cutting held and conveyed to the discharge position from the discharge position to the outside of the machine,
In conjunction with the swinging of the swinging member in the discharge end region in the discharging step, the discharging means swings over the gripping means from the fingertip side of the gripping means to the fingertip side along the opening / closing means. The discharge means is linked to the swinging member via a mechanical discharge linkage means so as to move, so that the excess portion after cutting is discharged from the discharge position to the outside of the machine. The packaging surplus part discharge structure of the packaging machine according to claim 1 or 2 .

Images