JP2019038585A - Throwing-in device - Google Patents

Abstract

To provide a throwing-in device that can appropriately throw in objects from a hopper into a packaging bag even if the objects to be packaged contain air inside and can be compressed as a whole.SOLUTION: A throwing-in device 20 includes a hopper 27 and a first press-in part 28. The hopper 27 has a supplying opening 27a that accepts objects to be packaged 200, and a discharging opening 27b which opens toward the inside of a packaging bag 100. The first press-in part 28 presses the objects to be packaged 200 inside the hopper 27 so that they are discharged from the discharging opening 27b. The diameter of the discharging opening 27b is smaller than the diameter of the supplying opening 27a. A tip part 41 of the discharging opening side of the first press-in part 28 has a base part 43 and multiple protruding parts 44 which protrude from the base part 43 to the discharging opening side. Spaces are provided between the multiple protruding parts 44.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a loading device that loads a packaging object into a packaging bag.

  Packaging object that is bulky and can be compressed as a whole (for example, an object constituted by a collection of a plurality of small elements, which can contain air in individual elements and / or a combination of a plurality of elements) For example, a compression filling packaging method disclosed in Patent Document 1 is known as a method for putting the product into a packaging bag. In the method of Patent Document 1, a packaging object in a hopper (that is, a funnel) is pressed with a push rod and put into a packaging bag, and the packaging object in the packaging bag is further pressed with another push rod. Is reduced in volume.

  Patent Document 2 discloses a pushing device that can arbitrarily adjust the pushing amount of the push rod.

JP 2008-007139 A JP 2000-109003 A

  In the method of Patent Document 1, the tip of the push rod used when pushing the object to be packed into the packaging bag has a flat shape, and the diameter of the tip of the push rod is substantially the same as the diameter of the discharge port of the hopper. Have the same size. Therefore, when the packaging object in the hopper is pressed by the push rod, a part of the packaging object is pushed away toward the outside of the push rod and may be sandwiched between the push rod and the inner wall of the hopper. . Moreover, although the push rod used with the pushing apparatus of patent document 2 has a single protrusion part in a center position, it is difficult to push in a package target object only with a single protrusion part, and it protrudes while supporting a protrusion part. The base part of the push rod which reciprocates inside and outside the filling funnel together with the part has a large diameter. Therefore, the push rod of Patent Document 2 also has the same problems as the push rod of Patent Document 1 described above, and a part of the packaging object is sandwiched between the push rod and the inner wall of the hopper (filling funnel). May end up.

  In such a case, a large force is locally applied to the packaging object between the push rod and the inner wall of the hopper, and the packaging object may be damaged. In addition, the resistance force (frictional force, etc.) acting between the inner wall of the hopper and the push rod and the package object increases, and a very large force is required to push the package object from the hopper. If a large force is applied to the packaging object in order to push the packaging object from the hopper, the packaging object may jump out of the hopper. In this case, there is a concern that a large impact force is applied to the packaging bag, and the packaging bag is detached from the gripper.

  Further, when a packaging object containing air is pressed by a pushing rod, the pushing object bites into the packaging object, and the packaging object itself can be moved substantially or almost only by deforming the packaging object. There are things that cannot be done. Even if such a packaging object is pressed by a conventional push rod, the packaging object cannot be appropriately moved toward the inside of the packaging bag, and there is a concern that a charging failure may occur. When such an input failure occurs, it is necessary to stop the apparatus and work to eliminate the failure, and the productivity deteriorates.

  The present invention has been made in view of the above-described circumstances, and provides, for example, a charging device that can appropriately pack a packaging object that contains air and can be compressed as a whole from a hopper into a packaging bag. The purpose is to do.

  According to one aspect of the present invention, a hopper having a supply port that receives a packaging object, a discharge port that opens toward the inside of the packaging bag, and a packaging object inside the hopper is discharged from the discharge port. A first pushing portion to be pressed, the diameter of the discharge port is smaller than the diameter of the supply port, and the discharge port side tip portion of the first push portion has a base and a plurality of protrusions protruding from the base portion toward the discharge port side. And a plurality of protruding portions provided with a space between them.

  According to another aspect of the present invention, a hopper having a supply port that receives a packaging object, a discharge port that opens toward the inside of the packaging bag, and a packaging object inside the hopper is discharged from the discharge port. The discharge port has a diameter smaller than that of the supply port, and a discharge port side tip of the first push unit protrudes from the base to the discharge port side. The present invention relates to a dosing device having a protrusion and a space surrounded by a base and a protrusion.

  The projecting portion may have an inclined portion that approaches the base portion from the radially outer side toward the inner side.

  The protrusion may be sharp.

  The first push-in portion may include a plurality of plate-shaped plate extending portions extending in the axial direction, and one tip portion of each of the plurality of plate extending portions may form a protruding portion.

  The first pushing portion may reciprocate so as to press the packaging object inside the packaging bag a plurality of times.

  The charging device further includes a second pushing portion, the first pushing portion presses the packaging object inside the hopper so as to be discharged from the discharge port toward the inside of the packaging bag, and the second pushing portion is You may have a front-end | tip part whose largest diameter is larger than the discharge port side front-end | tip part of a 1st pushing part, and may press the packaging target object inside a packaging bag.

  The charging device may further include a transport unit that moves the packaging bag from a first charging process position where the hopper is provided to a second charging process position where the second push-in part is provided.

  According to the present invention, for example, even a packaging object that contains air and can be compressed as a whole can be appropriately put into a packaging bag from a hopper.

FIG. 1 is a schematic diagram illustrating an example of the appearance of a packaging machine. FIG. 2A is a front view of an example of a pushing push rod. FIG. 2B is a perspective view of the input push rod shown in FIG. 2A. FIG. 3 is a schematic diagram illustrating an example of a hopper. FIG. 4 is a diagram for explaining the charging process. FIG. 5 is a diagram for explaining the charging process. FIG. 6 is a diagram for explaining a pressing process using a compression pressing rod. FIG. 7A is a front view of a modified example of the insertion push rod. FIG. 7B is a perspective view of the insertion push rod shown in FIG. 7A. FIG. 8A is a front view of another modified example of the insertion push rod. FIG. 8B is a perspective view of the insertion push rod shown in FIG. 8A. FIG. 9A is a front view of another modified example of the insertion push rod. FIG. 9B is a perspective view of the insertion push rod shown in FIG. 9A. FIG. 10A is a front view of another modified example of the insertion push rod. FIG. 10B is a perspective view of the insertion push rod shown in FIG. 10A.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  The packaging machine described below is an apparatus that inputs a packaging object into a packaging bag and then compresses the packaging object within the packaging bag. In particular, when an external force is applied, the packaging machine according to the present invention is used when a packaging object that is deformed according to the external force but whose overall position does not necessarily change according to the external force is put into the packaging bag. Are preferably used. Examples of such a packaging object include an object containing air. Such a packaging object may be constituted by an integral single element, or may be constituted by a set of a plurality of elements (for example, linear elements). When the packaging object is configured by a set of a plurality of elements, for example, each element may include air, or air may be included in a space between the elements. As examples, foods such as dried radishes and bonito, daily necessities such as sponges and sardines, and textiles such as cotton can be mentioned as packaging objects that can be suitably used in the packaging machine described below.

  FIG. 1 is a schematic diagram illustrating an example of the appearance of the packaging machine 10.

  The packaging machine 10 includes a conveyor magazine 11 and a bag processing device 12. The conveyor magazine 11 stores a large number of packaging bags 100 in an orderly stacked state. Each packaging bag 100 stored in the conveyor magazine 11 is an empty bag, and in a state in which the mouth portion 110 is closed, the side wall portions forming the mouth portion 110 face each other and are in close contact with each other. The mouth part 110 is an inlet part for introducing a packaging object into the packaging bag 100. The packaging bags 100 stored in the conveyor magazine 11 are held one by one by a bag take-out unit 21 configured by a sucker or the like, and passed from the bag take-out unit 21 to each gripper 22 of the bag processing apparatus 12.

  The bag processing apparatus 12 includes a conveyance table 23 that rotates intermittently and a plurality of grippers 22 (that is, holding units) that are attached to the outer periphery of the conveyance table 23 at equal intervals. Each gripper 22 is constituted by a pair of left and right gripping portions, and side portions located on opposite sides of each packaging bag 100 via the mouth 110 are held by the pair of gripping portions. Is held and transported in a suspended state. That is, each packaging bag 100 is gripped by the gripper 22 in a state where the mouth portion 110 of each packaging bag 100 is disposed on the upper side in the vertical direction and the bottom portion is disposed on the lower side in the vertical direction. Each gripper 22 moves intermittently in the rotation direction D1 together with the transport table 23, and stops intermittently at the first station S1 to the tenth station S10. The number of grippers 22 corresponds to the number of stations S1 to S10, and ten grippers 22 are provided in the packaging machine 10 of FIG. As described above, the combination of the gripper 22 and the transport table 23 is obtained by compressing the packing bag 100 from each of the stations S1 to S10 (for example, the fourth station S4 (first input processing position) where the hopper 27 is provided). A transport unit is configured to move to the fifth station S5 (second input processing position) where the push-in unit 29 is provided.

  The stations S1 to S10 are sequentially provided from the upstream side to the downstream side with respect to the conveyance direction of the packaging bag 100 held by the gripper 22 (that is, the rotation direction D1 of the conveyance table 23), and are arranged at equal intervals. In the first station S1, the packaging bag 100 is delivered from the conveyor magazine 11 to the gripper 22 by the bag take-out unit 21 (empty bag supply process). In the second station S2, various information such as date is printed on the surface of the packaging bag 100 by the printer 24 (printing process). In the third station S3, the mouth portion 110 of the packaging bag 100 is opened by the opening portion 25, and the opening guide 26 is inserted into the opened mouth portion 110 to maintain the opening state of the mouth portion 110 (opening step). ). In the third station S3, the pair of gripping portions constituting each gripper 22 are slightly close to each other, and the opening portion 25 facilitates opening the mouth portion 110 of the packaging bag 100.

  In the fourth station S4, the discharge port of the hopper 27 is disposed inside the packaging bag 100 through the mouth portion 110, and the packaging object supplied into the hopper 27 is pushed by the loading push rod (first push portion) 28. And put into the packaging bag 100 (feeding step). That is, the fourth station S <b> 4 is provided with a hopper 27 that can move up and down in the vertical direction, and an input push rod 28 that can move up and down in the vertical direction relative to the hopper 27. A supply port 27 a is formed at the top of the hopper 27, and a discharge port (see reference numeral “27 b” shown in FIG. 3 and the like described later) is formed at the bottom of the hopper 27. The object to be packaged is supplied into the hopper 27 through the supply port 27a, and is then pushed by the loading pusher 28 and put into the packaging bag 100 through the discharge port. The details of the hopper 27 and the input push rod 28 will be described later.

  When the packaging bag 100 gripped by the gripper 22 is transported from the third station S3 to the fourth station S4, the opening guide 26 also moves together with the packaging bag 100, and the opening guide 26 is also moved at the fourth station S4. The opening state of the mouth part 110 is maintained. After the discharge port of the hopper 27 is arranged inside the packaging bag 100, the opening guide 26 is retracted from the mouth part 110 in the fourth station S4 and returns to the third station S3. The opening guide 26 returns from the fourth station S4 to the third station S3 and is inserted into the mouth 110 of the new packaging bag 100 disposed in the third station S3 during one intermittent stop. Thus, the opening state of the mouth part 110 of the packaging bag 100 is maintained by the reciprocating movement of the pair of opening guides 26 between the third station S3 and the fourth station S4.

  In the fifth station S5, the compression pusher 29 pushes the packaging object in the packaging bag 100 to reduce the volume of the packaging object so that the packaging object does not exist in the vicinity of the mouth 110 (pushing process). ). Details of the compression push rod 29 will be described later.

  The sixth station S6 may be an empty station or a station for performing arbitrary processing. Typically, at the sixth station S6, a gripping failure of the gripper 22 with respect to the packaging bag 100 is detected, a printing failure by the printer 24 is detected, or a packaging object is not properly inserted into the packaging bag 100. Or When performing these detections, devices such as an imaging device necessary for each detection are provided in the sixth station S6, and the devices transmit and receive data to and from a control unit (not shown). In addition, in 6th station S6, the holding part of the gripper 22 is arrange | positioned mutually apart, and the opening part 110 of the packaging bag 100 is closed. The closing step of closing the mouth 110 may be performed at the sixth station S6, may be performed at the fifth station S5, or the packaging bag 100 is transferred from the fifth station S5 to the sixth station S6. It may be done in between.

  At the seventh station S7, the mouth 110 of the packaging bag 100 is heat-sealed by the first sealing machine 31 (first bag mouth sealing step), and at the eighth station S8, the mouth of the packaging bag 100 is carried out by the second sealing machine 32. 110 is heat-sealed (second bag mouth sealing step). At the ninth station S9, the mouth portion 110 (particularly, the heat-sealed portion) of the packaging bag 100 is cooled by the cooler 33 (sealing portion cooling step), the packaging bag 100 is released from the gripping of the gripper 22, and the discharge chute 34 is released. Will be dropped. The packaging bag 100 dropped on the discharge chute 34 is guided by the discharge chute 34 and sent to the subsequent stage (bag discharge step).

  The tenth station S10 may be an empty station or a station for performing arbitrary processing. Typically, in the tenth station S10, a defective bag discharging process for discharging the packaging bag 100 in which a defect is detected is performed. That is, the packaging bag 100 in which no defect is detected is released from the gripper 22 in the ninth station S9, and the packaging bag 100 in which the defect is detected is not released from the gripper 22 in the ninth station S9, but is gripped in the tenth station S10. 22 is released. Thereby, only the normal packaging bag 100 can be dropped onto the discharge chute 34 and sent to the subsequent stage, and the abnormal packaging bag 100 can be discharged at the tenth station S10 and not sent to the subsequent stage. .

  Next, the charging device 20 including the hopper 27 and the charging push rod 28 provided in the fourth station S4 and the compression pressing rod 29 provided in the fifth station S5 will be described.

[Insertion push-in]
The input push rod 28 is a member extending in the vertical direction and moves up and down in the vertical direction to press the packaging object inside the hopper 27 so as to be discharged from the discharge port of the hopper 27. The input push rod 28 is connected to a drive unit (not shown) such as an air cylinder, and this drive unit is controlled by a control unit (not shown), and the input push rod 28 moves up and down under the control of this control unit. Hereinafter, an example of the insertion push rod 28 will be described with reference to FIGS. 2A and 2B. However, the insertion push rod 28 may have other configurations, and other typical examples of the insertion push rod 28 will be described later. The

  FIG. 2A is a front view of an example of the insertion push rod 28. FIG. 2B is a perspective view of the insertion push rod 28 shown in FIG. 2A.

  2A and 2B includes a plurality of plate extensions 46 (in this example, four plate extensions 46), and each plate extension 46 has a direction in the central axis A (ie, It has a plate shape extending in the axial direction. One tip of each of these plate extending portions 46 (that is, the discharge port side tip 41) forms a protrusion 44. That is, the discharge-portion-side tip 41 of the input push rod 28 has a base 43 and a plurality of protrusions 44 (preferably three or more protrusions) protruding from the base 43 to the discharge port side of the hopper 27 (that is, vertically downward). Part 44). A plurality of plate extending portions 46 constituting the input push rod 28 extend radially outward from the base portion 43 in the radial direction (that is, the horizontal direction; the left-right direction in FIG. 2A), and extend from the base portion 43 in different directions. Extending towards. 2A and 2B, four plate extending portions 46 are arranged at equal intervals, and adjacent plate extending portions 46 form an angle of 90 degrees with respect to the central axis A. To do. In addition, the number of the plate extending parts 46 which comprise the insertion pushing rod 28 is not specifically limited, Moreover, the several plate extending part 46 does not necessarily need to be arrange | positioned at equal intervals.

  Each protrusion 44 has an inclined portion (that is, a ridge line portion) 45 that approaches the base portion 43 as it goes inward from the outer side in the radial direction. In particular, the base portion 43 of this example is provided on the central axis A and is located at the radial center of the input push rod 28 (particularly, the discharge port side tip portion 41). Therefore, the inclined portion 45 is inclined toward the radial center of the discharge port side distal end portion 41.

  In the insertion push rod 28 having the above-described configuration, each protrusion 44 is pointed. That is, the portion of each plate extending portion 46 that forms the protruding portion 44 is configured so as to become gradually thinner in the direction from the supply port side to the discharge port side of the hopper 27 (that is, the downward direction in the vertical direction). Yes. Each protrusion 44 has only to have a sharp shape as a whole, and does not necessarily have to be uniformly inclined, and may have a shape with a rounded tip.

  A space S is provided between the plurality of protrusions 44. In particular, in the insertion push rod 28 shown in FIGS. 2A and 2B configured by combining a plurality of plate extension portions 46, the plate extension in which the space S is adjacent over the entire injection push rod 28 including the discharge port side tip portion 41. Provided between the existing portions 46.

[hopper]
Next, an example of the hopper 27 will be described. The hopper 27 has a supply port 27a for receiving an object to be packaged and a discharge port that opens toward the inside of the packaging bag 100 disposed in the fourth station S4, and moves up and down in the vertical direction. The hopper 27 is connected to a drive unit (not shown) such as an air cylinder. The drive unit is controlled by a control unit (not shown), and the hopper 27 moves up and down under the control of the control unit. Hereinafter, an example of the hopper 27 will be described with reference to FIG. 3, but the hopper 27 may have other configurations.

  FIG. 3 is a schematic diagram illustrating an example of the hopper 27. FIG. 3 shows a state where the inside of the hopper 27 is viewed from the side, and also shows a feeding push bar 28 and a supply conveyor 39 for supplying the packaging object 200 to the hopper 27.

  The supply port 27a and the discharge port 27b of the hopper 27 respectively extend in the horizontal direction and face each other. The size in the radial direction (left-right direction in FIG. 3) of the communication path formed by the internal space of the hopper 27 that connects the supply port 27a and the discharge port 27b gradually decreases from the supply port 27a toward the discharge port 27b. The diameter of the discharge port 27b is smaller than the diameter of the supply port 27a. However, the supply port 27 a and the discharge port 27 b are both larger in size in the radial direction than the input push rod 28. Therefore, the input push rod 28 can pass through the supply port 27 a and the discharge port 27 b without contacting the inner wall of the hopper 27 when moving up and down in the vertical direction outside and inside the hopper 27.

  The inner wall surface of the hopper 27 has a first inclined surface 27c that is provided on the supply port 27a side and has a relatively gentle inclination, and a second inclined surface 27d that is provided on the discharge port 27b side and has a relatively steep inclination. . The first inclined surface 27c and the second inclined surface 27d form a portion located on the supply conveyor 39 side with respect to the radial direction of the inner wall surface, and the packaging object 200 dropped into the hopper 27 from the supply conveyor 39 downward in the vertical direction. invite. That is, the packaging object 200 dropped into the hopper 27 from the supply conveyor 39 is guided toward the first inclined surface 27c and the second inclined surface 27d and moved toward the discharge port 27b under the influence of gravity. By guiding the packaging object 200 by the first inclined surface 27c and the second inclined surface 27d having different inclinations, the packaging object 200 from the supply conveyor 39 is reliably received in the hopper 27 and the gravity is efficiently used. Thus, the packaging object 200 can be reliably guided toward the discharge port 27b.

  In the hopper 27 having the above-described configuration, the diameter of the supply port 27a is larger than the packaging object 200 dropped into the hopper 27 from the supply conveyor 39, and the packaging object 200 smoothly passes through the supply port 27a. Enter 27. On the other hand, the diameter of the discharge port 27b is smaller than the packaging object 200 dropped into the hopper 27 from the supply conveyor 39, and the packaging object 200 receives only gravity and receives no other external force. It cannot pass through 27 b and remains in the hopper 27. Thus, the diameter of the supply port 27a is larger than the packaging object 200 from the supply conveyor 39, and has a size through which the input push rod 28 can pass. On the other hand, the diameter of the discharge port 27b is smaller than the packaging object 200 dropped into the hopper 27 from the supply conveyor 39 and smaller than the opening diameter of the mouth part 110 of the packaging bag 100, but the insertion push rod 28 can pass through. Has a size.

[Input process]
Next, the operation of the charging process by the hopper 27 and the charging push rod 28 will be described with reference to FIGS. 4 and 5 are diagrams for explaining the charging process. 4 and 5 show a state in which the inside of the hopper 27 is viewed from the side, and a throw-in push rod 28 is also shown. In particular, FIG. 5 also shows a state where the inside of the packaging bag 100 is viewed from the side.

  As described above, the input push rod 28 moves up and down so as to extend on the outside and / or inside of the hopper 27, descends and protrudes from the hopper 27 via the discharge port 27b, and rises to feed the supply port 27a. It retracts from the inside of the hopper 27. Specifically, in a state where the insertion push rod 28 is disposed outside the hopper 27, one tip portion (that is, the discharge port side distal portion 41) of the insertion push rod 28 is disposed inside the hopper 27 while the other end portion is disposed. A state in which the front end portion (that is, the supply port side front end portion) is disposed outside the hopper 27 and a state in which the discharge port side front end portion 41 of the insertion push rod 28 protrudes from the hopper 27 through the discharge port 27b, The input push rod 28 can be taken. The illustrated pushing pusher 28 is smaller than the hopper 27 in the vertical direction, but the vertical length of the throwing pusher 28 is larger, smaller, or the same as the vertical length of the hopper 27. It may be.

  As shown in FIG. 3, the packaging object 200 is intermittently carried by the supply conveyor 39 and dropped from the terminal end of the supply conveyor 39 into the hopper 27. At this time, the entire insertion push rod 28 is disposed above the hopper 27. Therefore, the packaging object 200 falls into the hopper 27 through the supply port 27a without being obstructed by the insertion push rod 28. The supply conveyor 39, after dropping the packaging object 200, stops conveying the next packaging object 200 until the packaging object 200 is discharged from the hopper 27. After being discharged from, the next packaging object 200 is conveyed and dropped into the hopper 27.

  The packaging object 200 supplied to the hopper 27 from the supply conveyor 39 in this way is an object that contains air and can be compressed as a whole, and is smaller than the diameter of the supply port 27a, but smaller than the diameter of the discharge port 27b. Is big. Therefore, the packaging object 200 that has fallen into the hopper 27 is guided by the first inclined surface 27c while receiving gravity, and moves toward the discharge port 27b. However, before reaching the discharge port 27b, as shown in FIG. To stop. In the illustrated hopper 27, the radial size of the inner space of the hopper 27 at a certain position (hereinafter also referred to as “small diameter position”) in the second inclined surface 27 d is smaller than that of the packaging object 200. The inner wall surface of the hopper 27 at the small diameter position serves as a stopper that stops the packaging object 200 from falling, and holds the packaging object 200 that has fallen from the supply conveyor 39.

  Then, as shown in FIG. 5, the insertion push rod 28 moves downward in the vertical direction, enters the inside of the hopper 27 through the supply port 27a, advances in the hopper 27 toward the discharge port 27b, and discharges the discharge port. The discharge port side tip portion 41 protrudes from the inside of the packaging bag 100 from 27b. As a result, the packaging object 200 (see FIG. 4) that has been stopped inside the hopper 27 is pushed by the insertion pusher 28, discharged from the discharge port 27b to the inside of the packaging bag 100, and stored in the packaging bag 100. The

  In particular, the discharge port side distal end portion 41 of the insertion push rod 28 has a protruding portion 44 that protrudes from the base portion 43 in the axial direction (that is, the downward direction in the vertical direction). Therefore, when the packaging object 200 is pressed by the input push rod 28, the projecting part 44 guides the packaging object 200 toward the radially inner side (particularly the radial center) by the inclined part 45 of the projecting part 44. The packaging object 200 can be captured effectively. Therefore, even if the discharge port 27b is smaller than the packaging object 200, the packaging object 200 can be discharged from the discharge port 27b while being compressed in the radial direction. Further, a portion of the packaging object 200 that is directly pressed by the protruding portion 44 by providing a space S between the adjacent protruding portions 44 and reducing the pushing area of the protruding portion 44 (that is, the projected area in the vertical direction). The area in which damage can be applied to the packaging object 200 from the input push rod 28 can be reduced. Further, the space S provided between the adjacent projecting portions 44 allows the packaging object 200 to enter, and effectively prevents the packaging object 200 from being sandwiched between the input push rod 28 and the hopper 27. it can. Therefore, the resistance force (frictional force, etc.) acting between the inner wall of the hopper 27 and the input push rod 28 and the packaging object 200 is suppressed, and the force required to push out the packaging object 200 from the hopper 27 is reduced. can do.

  In general, when the packaging object 200 is temporarily held in the hopper 27 and the packaging object 200 is pushed out of the hopper 27 by the pusher, the tip of the pusher is formed with a small diameter and a flat tip. If it is done, even if the packaging object 200 containing air is pushed with such a pushing rod, the packaging object 200 may be deformed but not moved. In this case, it is difficult to continuously perform the process of loading the packaging object 200 into the packaging bag 100 with high accuracy. On the other hand, by providing the protruding portion 44 at the discharge port side tip 41 as in the insertion push rod 28 of the present embodiment, the packaging object 200 can be effectively moved while being captured by the protruding portion 44, and the packaging bag. It becomes possible to perform the process of putting the packaging object 200 into the 100 continuously and with high accuracy.

  4 and 5 described above, the hopper 27 moves downward in the vertical direction after the packaging object 200 is put into the hopper 27 from the supply conveyor 39, and the discharge port 27b of the hopper 27 After being inserted into the inside of the packaging bag 100, the insertion push rod 28 moves downward in the vertical direction and protrudes from the discharge port 27b. However, before the packaging object 200 is loaded into the hopper 27 from the supply conveyor 39 or simultaneously with the loading of the packaging object 200, the hopper 27 moves downward in the vertical direction, and the discharge port 27 b is inserted inside the packaging bag 100. May be. Also in such a case, after the discharge port 27b of the hopper 27 is disposed inside the packaging bag 100, the input push rod 28 moves downward in the vertical direction and protrudes from the discharge port 27b, and the packaging object 200 is moved into the hopper. 27 can be appropriately extruded into the packaging bag 100.

  Further, the insertion push rod 28 may reciprocate in the vertical direction so as to press the packaging object 200 inside the hopper 27 only once, or may reciprocate in the vertical direction so as to press a plurality of times. . That is, the input push rod 28 may be protruded from the discharge port 27b only once for the same packaging bag 100, or the input push rod 28 may be protruded from the discharge port 27b twice or more. By pressing the same packaging target object 200 a plurality of times with the input push rod 28 and putting it into the packaging bag 100, the packaging target object 200 can be more reliably and appropriately accommodated in the packaging bag 100.

[Compression indentation 杵]
Next, the compression push rod 29 will be described. FIG. 6 is a diagram for explaining a pressing process using the compression pressing rod 29. In addition, the state which looked at the inside of the packaging bag 100 from the side is shown by FIG.

  The above-mentioned throwing-in pusher 28 presses the packaging object 200 inside the hopper 27 so as to be discharged toward the inside of the packaging bag 100 from the discharge port 27b. On the other hand, the compression push rod 29 provided on the downstream side of the input push rod 28 presses and compresses the packaging object 200 inside the packaging bag 100. Thus, the input push rod 28 and the compression push rod 29 are different from each other in required functions, and the compression push rod 29 is more in the radial direction than the discharge port side tip 41 of the input push rod 28 (that is, FIG. 6). The compression tip 51 has a large maximum diameter in the left-right direction).

  That is, the cross-sectional diameter in the radial direction of the compression tip 51 of the compression push rod 29 for the purpose of compressing the packaging object 200 in the packaging bag 100 is the cross-sectional diameter in the radial direction of the discharge port side tip 41 of the input push rod 28. Bigger than. However, the cross-sectional diameter of this compression front-end | tip part 51 is smaller than the opening diameter of the opening part 110 of the packaging bag 100 arrange | positioned with the gripper 22 in 5th station S5. The shape of the end face 51a of the compression tip 51 of the compression push rod 29 is not particularly limited, and the end face 51a may have a flat shape as shown in FIG. Also good.

  The compression pusher 29 may reciprocate in the vertical direction so as to press the packaging object 200 inside the packaging bag 100 only once, or may reciprocate in the vertical direction so as to press multiple times. Good. That is, with respect to the same packaging bag 100, the compression tip 51 of the compression push pad 29 may be inserted into the packaging bag 100 only once, or the compression tip 51 is inserted into the packaging bag 100 more than once. It may be inserted. By pressing the same packaging target object 200 a plurality of times by the compression pusher 29, the packaging target object 200 can be more reliably and appropriately compressed in the packaging bag 100.

[Processing flow from input process to indentation process]
Next, a processing flow in the fourth station S4 (the charging process) and the fifth station S5 (the pushing process) will be described.

  After the packaging bag 100 gripped by the gripper 22 is transported from the third station S3 to the fourth station S4 with the intermittent rotation of the transport table 23, the supply conveyor 39 transports the packaging object 200 and is shown in FIG. Thus, the packaging object 200 is dropped into the hopper 27 (a hopper charging step). At this time, the number of the packaging objects 200 dropped from the supply conveyor 39 onto the hopper 27 is not particularly limited, and the number of the packaging objects 200 to be accommodated in one packaging bag 100 is transferred from the supply conveyor 39 to the hopper. 27 is dropped. The packaging object 200 dropped from the supply conveyor 39 is held in the hopper 27 (see FIG. 4).

  And the hopper 27 is lowered | hung and the edge part containing the discharge outlet 27b of the hopper 27 is inserted in the packaging bag 100 via the opening part 110 (hopper insertion process). In this example, the hopper insertion process is performed after the above hopper charging process, but the hopper insertion process may be performed before the hopper charging process, or the hopper insertion process is performed simultaneously with the hopper charging process. It may be broken.

  Then, the insertion push rod 28 is lowered, and the packaging object 200 in the hopper 27 is pushed out into the packaging bag 100 (see FIG. 5). Note that the packaging object 200 may be pressed a plurality of times by the input push rod 28 or may be pressed only once.

  Then, the hopper 27 and the input push rod 28 are retracted from the inside of the packaging bag 100, and the packaging bag 100 gripped by the gripper 22 is conveyed from the fourth station S4 to the fifth station S5 with the intermittent rotation of the conveyance table 23. The In addition, the space | interval between the holding parts of the gripper 22 holding the packaging bag 100 arrange | positioned in 5th station S5 is the same as the space | interval between the holding parts in 4th station S4, and the packaging bag 100 of 5th station S5 is the same. The mouth part 110 maintains an open state. Then, the compression pushing rod 29 is lowered, and the packaging object 200 inside the packaging bag 100 disposed in the fifth station S5 is compressed. Note that the packaging object 200 may be compressed a plurality of times by the compression push rod 29, or may be compressed only once.

  Then, the compression pusher 29 is raised and retracted from the inside of the packaging bag 100. And the packaging bag 100 hold | gripped by the gripper 22 is conveyed from 5th station S5 to 6th station S6 with the intermittent rotation of the conveyance table 23. FIG.

  The series of processes described above is performed by controlling each unit of the packaging machine 10 by a control unit (not shown). This control unit may be configured by a single control device, or may be configured by combining a plurality of control devices.

  As described above, according to the loading device 20 of the present embodiment, the packaging object 200 can be properly loaded into the packaging bag 100 by the loading push bar 28. In particular, since the input push rod 28 includes a plurality of projecting portions 44, for example, even if the packaging target object 200 contains air and can be compressed as a whole, the plurality of projecting portions 44 make the packaging target object 200 appropriate. And can be reliably accommodated in the packaging bag 100. In this way, by preventing the defective loading of the packaging object 200, it is not necessary to stop the apparatus for eliminating the defect, and the productivity is improved.

  Further, by forming the inclined portion 45 inclined toward the base portion 43 provided on the central axis A in the projecting portion 44, the packaging subject 200 is pushed into the base portion 43 when the packaging subject 200 is pushed by the insertion push rod 28. The packaging object 200 is easily captured by the input push rod 28.

  Further, by sharpening the protruding portion 44, the packaging object 200 can be hooked and held. Therefore, for example, when the packaging object 200 includes a set of a plurality of linear elements, the linear elements are hooked by the sharp protrusions 44 so that the packaging object 200 is effectively directed toward the inside of the packaging bag 100. Can be moved.

  Further, by forming a space S at the discharge port side tip portion 41 (particularly between the projecting portions 44), the resistance force acting between each of the input push rod 28 and the hopper 27 and the packaging object 200 is suppressed. Can do. Thereby, even if the diameter of the insertion push rod 28 (particularly the discharge port side tip portion 41) is increased, the resistance force can be suppressed to be small. On the other hand, by increasing the diameter of the input push rod 28 (particularly the discharge port side tip 41), the packaging object 200 can be easily captured by the input push rod 28.

  Further, a compression push rod 29 is provided on the downstream side of the loading push rod 28, and the charging step and the pushing step of the packaging object 200 are performed at different stations. Thereby, it is possible to appropriately perform both the charging process and the pushing process while shortening the time required for the processing at each station, and the entire processing performed in the packaging machine 10 (especially the bag processing device 12) can be performed at high speed. Can be

[Modified example of throwing indenter]
Next, a typical modification of the insertion push rod 28 will be described. 2A and 2B are denoted by the same reference numerals as those of the insertion push rod 28 shown in FIGS. 2A and 2B, and detailed description thereof is omitted. .

  FIG. 7A is a front view of a modified example of the insertion push rod 28. FIG. 7B is a perspective view of the insertion push rod 28 shown in FIG. 7A.

  7A and 7B has a pressing base portion 60 that extends in the axial direction and has an outer peripheral surface having a circular cross section. Each protrusion 44 is provided at one end of the pressing base 60 in the axial direction, and is provided integrally with the pressing base 60. A plurality of projecting portions 44 (four in the illustrated push-in push rod 28) are provided, and these projecting portions 44 are arranged radially at equal intervals around a base portion 43 provided on the central axis A. Each protrusion 44 has an inclined portion 45 that is inclined toward the base portion 43 and two inclined surfaces that are provided so as to sandwich the inclined portion 45. A space S is provided between adjacent protrusions 44, and each protrusion 44 is sharp.

  Similarly to the input push bar 28 shown in FIGS. 2A and 2B described above, the input push bar 28 of the present modified example can appropriately capture and push the packaging object 200 into the packaging bag 100. That is, the packaging object 200 can be easily guided toward the base 43 by the inclined part 45 inclined toward the base 43, and the packaging object 200 can be hooked and captured by the sharp protrusion 44. Further, by forming the space S at the discharge port side tip portion 41, it is possible to suppress the resistance force acting between each of the insertion push rod 28 and the hopper 27 and the packaging object 200.

  FIG. 8A is a front view of another modification of the insertion push rod 28. FIG. FIG. 8B is a perspective view of the insertion push rod 28 shown in FIG. 8A.

  8A and 8B includes a pressing base portion 60 having an outer peripheral surface having a circular cross section, and a plurality of (see FIG. 8A and FIG. 8B charging bases) are provided at one end of the pressing base portion 60. The push rod 28 is provided with four projections 44. These protrusions 44 are provided radially at equal intervals around a base 43 provided on the central axis A, and each protrusion 44 has an inclined part 45 inclined toward the base 43, It has an elongated shape. And each protrusion part 44 is arrange | positioned so that it may protrude from the press base part 60 regarding radial direction (namely, left-right direction of FIG. 8A).

  Similarly to the input push bar 28 shown in FIGS. 2A and 2B described above, the input push bar 28 of the present modified example can appropriately capture and push the packaging object 200 into the packaging bag 100. That is, the packaging object 200 can be easily guided toward the base 43 by the inclined part 45 inclined toward the base 43, and the packaging object 200 can be hooked and captured by the elongated protrusion 44. Further, by forming the space S in the discharge port side tip portion 41, it is possible to suppress the resistance force that acts on the insertion push rod 28 and the hopper 27 from the packaging object 200. In particular, in this modification, the pressing base portion 60 can be made thin, and when the insertion pusher 28 is inserted into the hopper 27, the hopper 27 and the injection pusher 28 are located near the discharge port side tip 41. A large space can be formed between them. Thereby, the resistance force which acts between each of the insertion push rod 28 and the hopper 27 and the packaging object 200 can be made extremely small, and the force required to push the packaging object 200 can be effectively reduced. Can do.

  FIG. 9A is a front view of another modification of the insertion push rod 28. FIG. 9B is a perspective view of the insertion push rod 28 shown in FIG. 9A.

  9A and 9B includes a pressing base portion 60 having an outer peripheral surface having a circular cross section, and the protruding portion 44 is provided integrally with the pressing base portion 60. A conical space S extending in the axial direction from the end surface is provided at the discharge-portion-side tip portion 41 of the input push rod 28, and a protruding portion 44 is constituted by a side wall portion that forms this space S. Yes. Therefore, the protruding portion 44 has a ring-shaped end surface, and the side wall surface forming the space S forms the inclined portion 45. As described above, the insertion push rod 28 according to the present modification has a space S surrounded by the base portion 43 and the protruding portion 44 (particularly, the inclined portion 45).

  Similarly to the input push bar 28 shown in FIGS. 2A and 2B described above, the input push bar 28 of the present modified example can appropriately capture and push the packaging object 200 into the packaging bag 100. That is, it is easy to guide the packaging object 200 toward the base portion 43 by the inclined portion 45 inclined toward the base portion 43. Further, by forming the space S at the discharge port side tip portion 41, it is possible to suppress the resistance force acting between each of the insertion push rod 28 and the hopper 27 and the packaging object 200. In particular, since the space S is formed in the end face of the discharge port side tip 41 and the inside of the insertion push rod 28 in this modification, the packaging object 200 can be pressed while being supplemented in the space S. This effectively prevents the packaging object 200 from being sandwiched between the hopper 27 and the input push-in rod 28 while reliably pressing the packaging object 200 by widening the pressing surface with respect to the packaging object 200. Can do.

  FIG. 10A is a front view of another modification of the insertion push rod 28. FIG. FIG. 10B is a perspective view of the insertion push rod 28 shown in FIG. 10A.

  10A and 10B includes a pressing base portion 60 having an outer peripheral surface with a circular cross section, and the protruding portion 44 is provided integrally with the pressing base portion 60. A rectangular parallelepiped space S extending in the axial direction from the end surface is provided at the discharge port side tip portion 41 of the input push rod 28, and a protruding portion 44 is constituted by a side wall portion forming the space S. Yes.

  Similarly to the input push bar 28 shown in FIGS. 2A and 2B described above, the input push bar 28 of the present modified example can appropriately capture and push the packaging object 200 into the packaging bag 100. That is, by forming the space S at the discharge port side distal end portion 41, it is possible to suppress the resistance force that acts between each of the insertion push rod 28 and the hopper 27 and the packaging object 200, and the packaging object 200. Can be pressed while supplementing in the space S. In particular, compared to the conical space S formed in the input push rod 28 shown in FIGS. 9A and 9B, the rectangular space S shown in FIG. 10 tends to increase the overall capacity. Therefore, the capacity of the space S that captures (that is, accommodates) the packaging object 200 is increased, the pressing surface of the input push rod 28 with respect to the packaging object 200 is widened, and the hopper 27 is pressed reliably. It is possible to effectively prevent the packaging object 200 from being sandwiched between the squeeze push-in bar 28 and the insertion push-in bar 28.

  Moreover, in the above-mentioned embodiment and modification, the base 43 may be provided at a position where the central axis A of the insertion push rod 28 passes or may be provided at a position where the central axis A does not pass. The base 43 may form a dot-like relatively small plane or curved surface, or may form a relatively large plane or curved surface. Further, only one or a plurality of the above-described spaces S (FIGS. 9A to 10B) may be provided in the insertion push rod 28.

  The present invention is not limited to the above-described embodiments and modifications. For example, various modifications may be made to the elements of the above-described embodiments and modifications. Moreover, the form containing the component and / or method other than the above-mentioned component and / or method can also be contained in embodiment of this invention. In addition, a form in which some of the above-described components and / or methods are not included can also be included in the embodiment of the present invention. In addition, a form including some components and / or methods included in an embodiment of the present invention and some components and / or methods included in another embodiment of the present invention is also included in the present invention. It can be included in embodiments. Therefore, the components and / or methods included in each of the embodiments and modifications described above and the embodiments of the present invention other than those described above may be combined, and such a configuration related to such combinations may also be implemented. It can be included in the form. Moreover, the effect produced by the present invention is not limited to the above-described effect, and a specific effect corresponding to the specific configuration of each embodiment can be exhibited. As described above, various additions, modifications, and partial deletions may be made to each element described in the claims, the description, the abstract, and the drawings without departing from the technical idea and spirit of the present invention. It is.

DESCRIPTION OF SYMBOLS 10 Packing machine 11 Conveyor magazine 12 Bag processing apparatus 21 Bag taking-out part 22 Gripper 23 Transfer table 24 Printer 25 Opening part 26 Opening guide 27 Hopper 27a Supply port 27b Discharge port 27c 1st inclined surface 27d 2nd inclined surface 28 29 Compression Pusher 31 First Sealing Machine 32 Second Sealing Machine 33 Cooler 34 Discharge Chute 39 Supply Conveyor 41 Discharge Port Side Tip 42 Supply Port Side Tip 43 Base 44 Projection 45 Inclination 46 Plate Extension 51 Compression End part 51a End surface 60 Pressing base part 100 Packaging bag 110 Mouth part 200 Packaging object A Center axis D1 Direction of rotation S Space S1 First station S2 Second station S3 Third station S4 Fourth station S5 Fifth station S6 Sixth station S7 7th station S8 8th Shon S9 ninth station S10 tenth station

Claims (8)

A hopper having a supply port for receiving an object to be packaged, and a discharge port that opens toward the inside of the packaging bag;
A first pushing portion that presses the packaging object inside the hopper so as to be discharged from the discharge port,
The diameter of the discharge port is smaller than the diameter of the supply port,
The discharge-portion-side tip of the first push-in portion has a base and a plurality of protrusions that protrude from the base toward the discharge port and have a plurality of protrusions that are provided with a space therebetween. apparatus. A hopper having a supply port for receiving an object to be packaged, and a discharge port that opens toward the inside of the packaging bag;
A first pushing portion that presses the packaging object inside the hopper so as to be discharged from the discharge port,
The diameter of the discharge port is smaller than the diameter of the supply port,
The discharge port side tip of the first push-in portion has a base, a protrusion protruding from the base toward the discharge port, and a space surrounded by the base and the protrusion.   The charging device according to claim 1, wherein the protruding portion has an inclined portion that approaches the base portion as it goes inward from the outer side in the radial direction.   The charging device according to any one of claims 1 to 3, wherein the protruding portion is pointed. The first pushing portion includes a plurality of plate-shaped plate extending portions extending in the axial direction,
The charging device according to any one of claims 1 to 4, wherein one tip portion of each of the plurality of plate extending portions forms the protruding portion.   The charging device according to any one of claims 1 to 5, wherein the first pushing portion reciprocates so as to press the packaging object inside the packaging bag a plurality of times. A second push-in portion;
The first pushing portion presses the packaging object inside the hopper so as to be discharged from the discharge port toward the inside of the packaging bag,
The said 2nd pushing part has a front-end | tip part whose largest diameter is larger than the said discharge port side front-end | tip part of a said 1st pushing part, and presses the said packaging target object inside the said packaging bag. The charging device according to any one of the above.   The charging device according to claim 7, further comprising a transport unit that moves the packaging bag from a first charging process position where the hopper is provided to a second charging process position where the second push-in part is provided.