JP4233028B2 - Supply device for wrapping bags and packages for packaging machines - Google Patents

Description

  The present invention relates to an apparatus for supplying an object to be packaged and a wrapping bag covering the object to be packaged in accordance with the circulation timing of each of the seal mechanisms with respect to a heating seal mechanism that arrives at regular time intervals.

  For example, when packing a chicken such as block chicken with feathers treated with hot water or block beef mechanically, the bag mouth of the uppermost stacked bag is generally lifted with a vacuum cup while compressed air Is blown into the bag to open the bag, and a saddle type hopper is inserted into the bag mouth of the bandage, and the article to be packaged is filled through the hopper. However, the work of repeatedly lifting the bag mouth with the vacuum cup against the weight of the bag always involves the problem of an opening error. In other words, the wrapping bag itself is lightweight and its weight is not so much of a problem, but the wrapping bag exhibits a sail effect when subjected to airflow, and the weight of the wrapping bag is added to the wrapping bag. It rarely falls off and an opening error occurs.

In that case, as an example with few opening mistakes, while pulling out the continuous tube film, the end of the film is opened by a pair of vacuum cups, and the package is fed into the film from the opening and the package is wrapped. An apparatus is disclosed in which a film for storing an object is cut to a predetermined length, and then the cut film and an object to be packaged are fed together into a seal mechanism. However, in the case of the apparatus, the opening end of the tube film and the sealing mechanism are opposed to each other, and the package is temporarily moved into the tube film, and then the package and the tube film are integrally directed to the sealing mechanism. There is a fateful two-way movement of moving and there is a problem with efficiency.
JP 49-72082 A JP 58-203827 A JP 57-37525 A (USP 4553376)

  SUMMARY OF THE INVENTION An object of the present invention is to construct a device that efficiently supplies a package to a packaging bag while, for example, supplying mechanical packaging to a rotary vacuum packaging machine with a low dropout frequency. .

  The opening of the bandage is naturally opened using gravity, and the bandage is expanded with a saddle type hopper and carried into a packaging machine, and further the article to be packaged is carried into the bandage, and the bandage detecting means And realized fewer mistakes.

  FIG. 2 is a plan view of a rotary vacuum packaging machine for the purpose of carrying in the bandage and the object to be packaged. Four pressure chambers 10 rotate intermittently by 90 degrees, and each of the pressure chambers 10 A surface plate 12 provided with a lid 13 that can be freely opened and closed with respect to the surface plate; a seal bar that is operated by an actuator 14 is provided in the lid material; The mouth of the wrapping bag can be heat-sealed while applying a vacuum to the packaged product. Although the apparatus is already known, an apparatus for carrying an article to be packaged in the direction 15 of the carry-in line with respect to the open seal base 11 of the pressure-resistant chamber 10 is novel, and this apparatus will be described.

  FIG. 1 shows a carry-in device connected to FIG. 2, in which a sliding plate 18 and a saddle type hopper 19 supported by two parallel guides 17 via a slider 20 are always fixed along the guides 17. It is configured to reciprocate in a cycle.

  The details of the saddle type hopper 19 are as follows. As shown in FIG. 3, the lower grooved material 22 fixed to the shaft rail 21 between the sliders 20 and the upper portion connected to the lever 23 rotatably supported at both ends of the shaft rail 21. The lower groove mold material 22 can be rotated together with the shaft 21 by the operation of the lot 25, and the upper groove mold material 24 can be rotated by the operation of the lever 23. Therefore, it is possible to open and close the heel hopper 19 in the up and down direction by these two rotation operations.

  More specifically, as shown in the partially exploded view of FIG. 4, the sliding plate 18 supported by the guide 17 supports the above-described shaft rail 21 via the bearing plate 27 connected to the fixed plate 26 fixed to the guide plate 17. After all, the lower groove mold member (not shown) fixed to the seat plate 28 of the coaxial bar 21 can be rotated by transmitting the operating force of the lever 29 through the lot 25. Further, the upper groove member 24 integrated with the lever 23 supported at both ends of the crosspiece 21 is rotated up and down by the lever 23 as described above.

  On the other hand, when an operating force is applied from the rod 32 to the lever 31 connected to the sliding plate 18 via the lot 30 in the same figure, the sliding plate 18 and the upper and lower groove mold members 24 of the saddle type hopper follow the guide 17. In short, as shown in FIG. 6, the hopper 19 moves forward along the guide 17 to the imaginary line position 19U, that is, to the sealing base 11 of the surface plate 12 forming the pressure-resistant chamber, and then moves back to the original position. The reciprocating motion is repeated.

In this case, as shown in FIG. 5, the attitude of the upper groove-type member 24 in the bill type hopper 19, there is undergoing adjustment by the inclination of the cam rail 32, the cam rail 32 in the vertical pins 35 at one end by a shaft By swinging, the groove member 24 that engages the pin roll 34 of the lever 23 with the slit 33 of the cam rail rotates up and down. This operation time will be described later.

  On the other hand, FIG. 7 shows a configuration of a packaging supply section, in which a box 51 arranged at the upper portion accommodates a tape back made up of a large number of packaging bags 50, and the tape is applied by moving the tape 53 by winding a reel 52. Each attached bag 50 can be pulled out.

  As shown in FIG. 8, the tape back is formed by attaching and wrapping each wrapping bag 50 in which the bag mouths are shifted by a predetermined interval 54 and are attached to two adhesive tapes 53. The bag end 58 is corrected by the air pressure ejected from a pipe nozzle 59 installed in the track.

  In the tape horizontal track 53A shown in FIG. 7, the mouth of the foremost wrapping bag 50 hanging from the tape 53 tends to naturally open like a virtual line due to its gravity, and is therefore adsorbed by the vacuum cup 57 with the shaft 56 as a fulcrum. When the bag mouth is opened downward as shown by an arrow, the advancing saddle type hopper 19 enters the wrapping bag 50 and sequentially expands the mouth of the bandage.

  Therefore, control is performed in advance so that the feeding pitches of the respective sachets 50 coincide with the reciprocating operation cycle of the hopper 19. In this case, the compressed air ejected from the nozzle 58 arranged at the inclination angle shown in the figure is applied to the opening of the wrapping bag 50 along the upper surface of the hopper 19, and then the compressed air is wrapped through the cavity in the hopper 19 that moves forward. The bag is expanded by blowing into the bag 50. Note that the vertical presser guide 55 holds the overlapped bottom edges of the wrapping bags so as not to be dispersed.

  A sensor 70 for stopping the front end of the wrapping bag at a specified position is provided on the horizontal track 53A for transferring the tape 53 in FIG. Further, a pawl wheel 73 incorporating a one-way clutch 72 is disposed between the reel 52 and its support shaft 71, while the pawl wheel 73 is driven by pawl teeth 75 connected to a motor 74 including an air cylinder. Thus, the leading end of each bandage is detected and the reel 52 is inching rotated only in one direction. In short, the operation device 76 such as an electromagnetic switching valve is actuated by a signal from the controller 77, and the motor 74 rotates the inching of the reel 52. Therefore, the rotation of the reel 52 stops at the same time as the sensor 70 catches the leading end of the wrapping bag. To do. In short, if the same action is shown in a flowchart, it corresponds to the relationship of steps (S1) and (S2) in FIG. 19, and such control is for the purpose of keeping the insertion amount of the bag hopper 19 into the packaging bag 50 constant as shown in FIG. It is.

  The box 51 for accommodating the tape backpack in FIG. 11 is supported in a bone-shaped case 61 supported by the frame frame 60. While two rails 62 (see also FIG. 12) fixed to the upper part of the frame 60 are suspended with a dharma-shaped support plate 63 by four pulleys 64, Each of the bone cases 61 is suspended through a shaft 65, so that one of the centers of the two bone cases 61 is aligned with a carry-in track 67 of a package by a hopper. These bone cases 61 can be displaced along the rails 62 integrally with the support plate 63.

  The movement of the support plate 63 is performed by the operation of the operation device 66 such as a fluid cylinder. That is, the two bone-shaped cases 61 can freely rotate on the support plate 63 with the shaft 65 as a fulcrum, and when the back in the bone case on one side is completely consumed, the support plate moves as indicated by the virtual line 63A. The back is replenished by rotating like the bone-shaped case 61A around the shaft 65A. That is, as shown in step (S3) in FIG. 19, when the tape back non-confirmation signal (S3) is issued and the set time elapses in this state (S4), the skeleton case of the package carrying path 67 in FIG. An operation of switching 61 to a different one is performed (S5). That is, by operating the cylinder 66 in FIG. 11, the positions of the two bone cases 61 in FIG. 12 are switched along the rails 62.

  On the other hand, as shown in FIG. 13, the electromagnetic switching valve 69 of the vacuum line 68 that passes through the hollow rotary shaft 56 and is connected to the vacuum cups 57 is controlled by a controller (not shown). A vacuum suction force is applied to the cup 57 to adsorb the enclosed bag 50. That is, as shown in step (S6) in FIG. 19, the vacuum suction force acts on the vacuum cup, and when the vacuum measurement value in the section (S7) reaches the prescribed value, the packaging confirmation signal in step (S8) is issued.

  The first sensor 82 installed on the end stopper 81 of the belt conveyor 80 in FIG. 1 detects an object 83 to be packaged that stops colliding with the end stopper 81, and inputs the detection signal to the controller 84. A conveying element 86 connected to the power machine 85 supplies the package 83 with a signal from 84 on the mounting table 87. That is, it is the relationship of each step (S9) (S10) in FIG.

  As described above, the wrapping confirmation signal (S8) in FIG. 19 and the package supply signal (S10) are connected to start the forward rotation of the push-in motor (S11). That is, in FIG. 1, the controller 84 drives the forward / reverse motor 88 connected to the screw rod 88 </ b> X, and the object 83 is placed on the sliding plate 18 by the movement of the push rod 90 along the guide 89.

  The open / close bar 91 disposed under the saddle type hopper 19 shown in FIG. 6 is completely separated from the saddle type hopper 19 as shown in FIG. 14 and FIG. 15, and is between the sliders 92 respectively supported by the parallel guides 17 on both sides. Then, it is attached to the installation shaft 93 that is installed rotatably as follows. That is, two spindles 94 are suspended from both ends of the installation shaft 93, and a rotary plate 95 is pivotally supported at the lower ends of the spindles 94, and a head of a vertical axis 96 is rotatably supported at the front end of each rotary plate 95. The open / close bar 91 is fixed to the above.

The torsion coil spring 97 wound around the two spindles 94 applies a reaction force to the rotation of the tips of both rotary plates 95 in the opening direction, and urges the gap between the rotary plates 95 to be narrowed. , whereas the coil spring 98 torsion wound on both the vertical axis 96, by the action of the reaction force to the rotation in the closing direction of both opening and closing bars 91 tip is biased to open the two opening and closing bars 91. Further, the column member 99 formed upward from the middle of the rotating plate 95 receives the stoppers 100 and 101, and closes and closes both the rotating plates 95 more than necessary by the torsion coil springs 97 and 98. The opening of the open / close bar 91 is restricted.

The saddle type hopper 19 and the sliding plate 18 in FIG. 6 are advanced by the swinging of the first lever 31 as described above, while the third lever 103 advances the lower opening / closing bar 91. In this case, the lower groove mold material 22 is transiently leveled by the lever 29 having a small turning radius, while the open / close bar 91 connected to the fourth lever 104 is also synchronized and leveled (see the virtual line 91A).

That is, the saddle type hopper 19U and the opening / closing bar 91A open in the packaging bag 50 in FIG. 7 and move forward while peeling the packaging bag 50 from the tape 53A, and the tip of the opening / closing bar 91A coincides with the inner surface 150 of the seal base 11. Stop at the specified position. At this time, the switch 120 installed in the lower region is activated. The switch 120 includes a pair of swinging bars 122 that mesh with each other with fan-shaped teeth 121 as shown in FIG. 18, and a power device 124 that operates the bar 122, and acts on the hanging shafts 125 on both sides as shown in FIG. The open / close bar 91 is opened on both sides.

  This opening of the opening / closing bar is for confirming the presence of the bandage. When the bandage 50 is present in FIG. 15, the opening / closing bar 91 does not touch the sensor 130 due to its resistance. The bar 90 is pushed into the seal bar inner surface 105, and the article 83 to be packaged is carried into the bandage 50 through the saddle type hopper 19. At this time, the pulley-type friction element 109 at the tip of the rocking body 108 supported by the frame 107 via the pin 106 is pressed against the lower surface of the bag 50 by the rotating cam 110. This is because the inertia of the push-in bar 90 prevents the bag 50 from sliding excessively and falling off from the bag hopper 19. With this process, the bag 50 is stretched by pushing the packaged object 83 into the bag. The extra space is reduced.

Immediately thereafter, the push rod 90 is retracted S10 toward the fixed position, and then the saddle type hopper 19 receives the inclination of the cam rail 32 in FIG. It descends, closes the mouth and moves backward S11. At the same time, as shown in FIG. 15, both rotating plates 95 are rotated against the elasticity of the coil spring 97, and the opening of the wrapping bag 50 is tensioned by both open bars 91 against the elasticity of the torsional spring 98. Then, as shown in FIG. 17, the pair of clamps 128 installed on the surface plate 12 hold the bag mouth in a tensioned state, and then the opening / closing bar 91 is retracted from the inside of the bag to complete one cycle movement.

  In FIG. 17, when the opening / closing bar 91 is opened on both sides and the bandage 50 is first confirmed, if the back 50 is absent from the beginning, any of the opening / closing bars 91 will rotate excessively and the permanent sensor 130 will be turned on. Contact. As a result, a back non-confirmation signal from the opening / closing bar 91 is emitted from the sensor 130. In FIG. 10, the push-in bar 90 backs the packaged item while leaving the packaged item on the sliding plate behind the vertical hopper 19. Retreat without carrying in. That is, it is an operation of S14 in FIG. Thereafter, the open / close bar 91 activates the sensor 130 again by the secondary opening S15 to stop the operation of the entire apparatus.

  Although the opening / closing bar 91 performs the primary confirmation with the opening / closing bar 91 in FIG. This is a phenomenon that occurs as a result of the bag being excessively retracted due to the inertia of carrying the package into the bag after the first confirmation. In such a case, the sensor is activated by the secondary opening, and a stop signal is transmitted to the entire apparatus.

  It is applied as a rotary-type sealing device in which a large number of sealing mechanisms circulate at equal intervals, or as a bandage and a packaged material carrying-in device for various rotary packaging machines.

Partial plan view of the device Top view of the packaging machine connected to the front of the previous device Front view of vertical hopper Partial exploded view of saddle type hopper Relationship diagram between vertical hopper and cam rail 説明 Explanatory drawing of operating mechanism of hopper and open / close bar Explanatory drawing of opening of bag Top view of tape back Illustration of tape back take-up device Explanatory drawing of the state where the package is carried into the seal stand Side view of tape back container Plan view of the previous figure Explanatory drawing of the bag opening device Side view of the open / close bar Plan view of the previous figure Overall explanatory diagram from the previous figure Illustration of open / close bar and seal stand Opening and closing mechanism explanatory diagram of the opening and closing bar Flow chart explanatory drawing

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 ... Seal stand 19 ... Vertical hopper 50 ... Packaging bag 53A ... Transfer horizontal track 53 ... Horizontal track 57 ... Vacuum cup 58 ... Compressed air 70 ... Sensor for detecting the mouth of the packing bag 74 ... Tape pack feed motor 78 ... Vacuum gauge 80 ... Conveyor 82 ... Sensor for detecting an object to be packaged 83 ... Object to be packaged 87 ... Placement table 88 ... Pushing forward / reverse motor 90 ... Pushing bar 91 ... Opening / closing bar 109 ... Friction element 125 ... Sensor for detecting opening / closing bar

Claims (6)

A plurality of wrapping bag openings are arranged at equal intervals, and a tape back, which is attached to an adhesive tape in an armor-stacked manner, is disposed on a winding track by a reel, and the package is hung from the adhesive tape at a horizontal portion of the winding track. Means for opening the mouth of the bag by pulling it downward with a vacuum cup, and an upper saddle that forms a carry-in line at the lower part along the horizontal part of the track , reciprocates along the carry-in line, and opens and closes A hopper and a pair of lower opening and closing bars that open and close to the left and right are arranged, and the bag is expanded and peeled off from the adhesive tape by opening the saddle type hopper that enters into the mouth of the bag at the horizontal portion. take the該包bag, means for loading the surface plate of the rotary packaging machine of the carrying-in line, the pair of closing bars, open at the seal table above range of the surface plate to confirm the presence of the dressing, The confirmation means is a bandage If it detects is a rod pushing the articles to be packaged on the sliding board to move the hopper integral with a means for carrying up the seal base in side of the packaging bag, when the packed material carrying the beak type A means for restricting the sliding of the wrapping bag by pressing the bag mouth with a friction element that presses against the lower surface of the hopper, and the push rod, the saddle type hopper, and the sliding plate after the packing material is accommodated in the bandage. Means for sequentially retreating along the carry-in line, and means for retreating the opening / closing bar after the pair of opening / closing bars remaining in the bag opening is reopened and the tensioned bag opening is pressed against the sealing base with a clamp. A device for supplying a bandage and a package to a packaging machine comprising: In the upper region of the vertical hopper that moves the carry-in line toward the direction of the sachet, a nozzle is arranged obliquely downward, and the compressed air ejected from the nozzle is moved along the upper surface of the hopper. The apparatus of claim 1, wherein the compressed air is blown into the sachet through a cavity in the hopper that acts on an opening and then advances . Comprising a sensor for detecting the mouth of the foremost position wrapper of supporting an adhesive tape in the track horizontal portion, and an inching feed motor for conveying the respective wrapper in the tape integral with tare tip of the foremost position to be inching Is detected by the sensor (S1), a vacuum suction force is applied to the vacuum cup contacting the mouth of the foremost wrapping bag according to the detection signal (S6), and the vacuum measurement value of the vacuum line of the vacuum cup is measured. While detecting and securing the packaging confirmation signal (S8) by the increase of the vacuum measurement value (S7) that rises by the packaging adsorption, the packaging confirmation signal (S8) and the object to be packaged by the first sensor With the supply signal (S10) of the package to be sent to the mounting table according to the detection (S9), with respect to the drive motor of the push rod that pushes the package on the mounting table onto the sliding board , The device according to claim 1, which transmits a forward rotation start (S11) signal. Place. The non-confirmation signal (S3) at the sensor that detects the tip of the package to be inching fed passes the set time (S4), so that the bone-shaped case for tape back support placed in the carry-in line of the package is adjacent. 3. The device according to claim 2, wherein a signal (S5) for automatic replacement with a separate bone type case is transmitted. If the presence of the bandage cannot be confirmed by opening a pair of open / close bars that move together with the saddle type hopper, the push bar is moved back while leaving the package on the planing board, and the vertical type hopper and planing board are moved backward. 2. The apparatus according to claim 1, further comprising means for opening the opening / closing bar again, detecting an excessive opening movement of the opening / closing bar with a sensor, and stopping the operation of the entire apparatus based on the detection signal. When the bandage is confirmed by opening a pair of open / close bars that move together with the saddle type hopper, and the package is carried into the bandage, but the presence of the bandage is not confirmed by reopening the open / close bar thereafter 2. The apparatus according to claim 1, further comprising means for detecting an excessive opening movement of the opening / closing bar by a sensor and stopping the operation of the entire apparatus by the detection signal.