JP2018144843A - Position adjustment mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a position adjustment mechanism which can perform position adjustment in which a pair of left and right side guides and the like are approaching/separated simultaneously, and position adjustment which is performed individually, by switching them.SOLUTION: A position adjustment mechanism includes a first screw shaft 40 and a second screw shaft 50 arranged in the front and the back. These screw shafts have normal male screw parts 40a, 50a and reverse male screw parts 40b, 50b in which the screws are cut in reverse directions left and right respectively. A first female screw top 44 is linked to the reverse male screw part 40b of the first screw shaft, and a second female screw top 54 is linked to the normal male screw part 50a of the second screw shaft. The first female screw top is linked to a first side guide 26, and the second female screw top is linked to a second side guide 27. In this pattern, location adjustment can be performed on the first side guide by the rotation of a first rotary shaft and on the second side guide by the rotation of a second rotary shaft individually. When the two female screw tops are mounted together on one rotary shaft, the two side guides are approaching/separated simultaneously by the rotation of the rotary shaft on which they are mounted.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a position adjustment mechanism, and more particularly to a position adjustment mechanism of an apparatus that requires position adjustment in a lateral direction, such as a side guide or a folding line forming apparatus.

  For example, a position adjustment mechanism that adjusts the distance between a pair of left and right side guides placed on a conveyor can move the right and left side guides closer or further away by rotating a screw shaft that is threaded in the opposite direction on the right and left. By adjusting the interval. The screw shafts are arranged at two places on the front and rear of the conveyor, and each side guide is supported at two places by a pair of brackets connected to the front and rear screw shafts. The front and rear screw shafts are connected by a chain, and by rotating one, the other can be rotated simultaneously. In some cases, a connecting shaft is used instead of a chain, and the front and rear screw shafts are connected via a bevel gear.

  In the conventional distance adjusting mechanism described above, when the screw shaft is rotated, the left and right side guides move evenly. Therefore, when the reference position (for example, the center position) is offset, the side guide itself needs to be replaced. .

  As a mechanism for solving this problem, for example, application of a guide device disclosed in Patent Document 1 can be considered. The technique disclosed in Patent Document 1 uses a screw shaft (adjustment shaft) that is threaded in the opposite direction on the left and right, and rotates the screw shaft forward and backward, similarly to the conventional adjustment mechanism described above. The distance is adjusted by moving the pair of guide rollers closer or away at the same time. A slide shaft for adjusting the axial position of the pair of guide rollers with respect to the screw shaft is provided in parallel with the screw shaft for adjusting the distance, and the pair of guide rollers is rotated by rotating the slide shaft forward and backward. By moving in the same direction, the pair of guide rollers are offset from the reference position.

ACT 6-73021

  However, in the technique disclosed in Patent Document 1, after the slide shaft is rotated forward and backward and offset, the screw shaft is rotated forward and backward so that the pair of guide rollers simultaneously approach the offset position at the center. The distance is adjusted by moving it away from it. Therefore, for example, when you want to change the distance between the side guides according to the product width with the side guide on one side aligned with the reference, the position of the side guide at the reference position will shift when the screw shaft is rotated. Each time you adjust, you must adjust the reference.

  In order to solve the above-described problems, the position adjustment mechanism according to the present invention (1) moves a plurality of moving objects arranged at predetermined intervals close to and away from each other, and moves the moving objects in the moving direction. A position adjusting mechanism for adjusting a position, comprising a first screw shaft and a second screw shaft arranged in parallel with the moving direction, and a positive screw on one of both sides in the axial direction of the first screw shaft. A first positive male threaded portion, the other of both sides having a first reverse male threaded portion of a reverse screw, and a second positive male threaded portion of a positive screw on one of the two axial sides of the second screw shaft; A first female screw piece having a second reverse male screw portion of a reverse screw on the other side of the both sides and detachably attachable to either the first positive male screw portion or the second positive male screw portion And a first removable male screw part and a second reverse male screw part that can be detachably attached to the second reverse male screw part. An internal thread piece, and the first internal thread piece is reciprocated along the axial direction in accordance with the forward and reverse rotation of the first screw shaft or the second screw shaft to which the first internal thread piece is mounted. One of the plurality of moving objects is moved by the reciprocating movement of the female screw piece, and the second female screw piece is accompanied by forward and reverse rotation of the first screw shaft or the second screw shaft to which the second female screw piece is attached. Is reciprocated along the axial direction, and the other of the plurality of moving objects is moved by the reciprocating movement of the second female screw piece.

  According to the present invention, both the first female screw piece and the second female screw piece are attached to one of the first screw shaft or the second screw shaft, and when the screw shaft of the attached one is rotated forward and backward, the first female screw Both the top and the second internal thread top move simultaneously and move toward and away from each other. Accordingly, a plurality of moving objects also move toward and away simultaneously with the operation of one screw shaft. When the first female screw piece and the second female screw piece are attached to different screw shafts, when the first screw shaft is rotated forward and reverse, the female screw piece attached to the first screw shaft (first female screw piece or second female screw piece) As a result, the moving object linked to the female screw piece moves, and the other moving objects do not move. On the other hand, when the second screw shaft is rotated forward and backward, the other moving object moves, and one moving object moved by the first screw shaft does not move. Thus, in the present invention, it is possible to easily switch between a mode in which moving objects are individually moved and a mode in which both are moved simultaneously.

  (2) A pair of base plates are arranged so as to extend in a direction perpendicular to the moving direction, and two pairs of mounting plates attached so as to face each other are provided on the surfaces of the pair of base plates. Each plate includes a through hole, and the first screw shaft is inserted into the through hole of one of the pair of mounting plates of the two sets, and the second screw shaft is the two sets And the first female screw piece and the second female screw piece are fixed in a state of being connected to the attachment plate, and the moving object is The base plate may be moved together with the base plate. In this case, the first female screw piece and the second female screw piece are fixed to the mounting plate in a state where the first female screw piece and the second female screw piece are attached to the desired screw shaft, so that the moving object can be easily and reliably linked. .

  (3) The moving object may be supported by the base plate through a support member at a plurality of locations. If it does in this way, a movement target object should just be able to move stably.

  (4) The pair of base plates may be guided in the movement direction by a linear guide. In this way, when the first female screw piece and / or the second female screw piece is about to move in the axial direction as the predetermined screw shaft rotates, the base plate moves smoothly and the moving object is stabilized accordingly. Then you can move.

  (5) The moving object may be a side guide disposed on both sides in the transport direction of the transport device. If it does in this way, a suitable guide can be performed according to the conveyance position (the position of the transverse direction orthogonal to the conveyance direction) of a product. In particular, when the conveyance device used in, for example, a pillow wrapping machine is used, when both the center seal portion forming position in the pillow wrapping machine is eccentric and offset from the center, both side guides are easily positioned at desired positions. I can do it.

  According to the present invention, it is possible to perform position adjustment for simultaneously approaching / separating a plurality of moving objects as in the prior art, and individually for each moving object with respect to, for example, a change in a reference position or a product width. Position adjustment can be easily performed.

It is a front view which shows an example of the pillow packaging machine by which the position adjustment mechanism which concerns on this invention is mounted. It is a perspective view which expands and shows a part. It is a perspective view (the 1) showing a suitable embodiment of a position adjustment mechanism concerning the present invention. It is the perspective view (the 2). It is the front view. FIG. It is the left view. FIG. FIG. It is a top view which shows the example of a mounting pattern of a 1st internal thread piece and a 2nd internal thread piece. It is a top view which shows the example of a mounting pattern of a 1st internal thread piece and a 2nd internal thread piece. It is a top view which shows the example of a mounting pattern of a 1st internal thread piece and a 2nd internal thread piece.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that the present invention is not construed as being limited thereto, and various changes, modifications, and improvements can be made based on the knowledge of those skilled in the art without departing from the scope of the present invention.

  FIG. 1 shows an example of a pillow packaging machine on which the position adjusting mechanism according to the present invention is mounted, and FIG. 2 shows the main part thereof. The pillow wrapping machine is disposed on the upstream side of the wrapping machine main body 1, the film supply device 2 for continuously supplying a strip-shaped wrapping film to the wrapping machine main body 1, and the wrapping machine. A packaged article transport and supply device 4 that supplies the packaged article 3 to the main body 1 at predetermined intervals is provided.

  The film supply device 2 links the output of a driving motor (not shown) such as a servo motor, which is not shown, to the original roll 6 obtained by winding the belt-like film 5 into a roll. Supplying to the packaging machine body 1 at a constant speed while appropriately controlling the rotation speed. Further, various rollers 7 (only one is shown in the figure as a representative) are arranged at predetermined positions from the original fabric roll 6 to the packaging machine body 1, and the belt-like film 5 fed out from the original fabric roll 6. Is guided to the packaging machine main body 1 through a predetermined path by being passed over the roller 7. In the present invention, it is not always necessary to link the drive motor to the original fabric roll 6, and a feed roller may be provided on the transport path of the packaging film and pulled out.

  The package transport / supply device 4 includes a sprocket 9 disposed at the front and rear, an endless chain 10 spanned by the plurality of sprockets 9, and a plurality of push fingers 11 attached to the endless chain 10 at a predetermined pitch. It consists of. Thereby, when the pushing finger 11 hits the rear surface of the article to be packaged 3, the article to be packaged 3 moves forward on the conveyance path as the pushing finger 11 moves.

  The packaging machine main body 1 includes a bag making device 15 for making a bag-like film 5 to be supplied into a tubular film 14, a center seal device 16 disposed on the downstream side of the bag making device 15, and the center seal device 16. A belt conveyor 17 that conveys the tubular film 14 disposed on the downstream side, a top seal device 20 disposed on the downstream side of the belt conveyor 17, and a carry-out conveyor 18 disposed on the downstream side of the top seal device 20. A holding belt 19 is provided above the belt conveyor 17 and immediately before the top seal device 20.

  The bag making device 15 allows the side film edges 5a of the belt-like film 5 to contact (polymerize) with each other by passing the belt-like film 5 continuously supplied from the film supply device 2, and the tube that has become cylindrical. Bag-like film 14 is made. The bag making machine 15 of the present embodiment is set so that the lower side is open and the side edge portions 5a of the belt-like film 5 are positioned on the lower side.

  In addition, the articles to be packaged 3 that are sequentially supplied from the article to be packaged conveyance supply device 4 to the packaging machine body 1 are inserted into the bag making machine 15. Thereby, the to-be-packaged goods 3 supplied to the bag making machine 15 are arrange | positioned in the cylindrical film 14 for every predetermined space | interval. Further, since the article to be packaged 3 is included in the cylindrical film 14 in this way, the belt conveyor 17 conveys the cylindrical film 14 including the article to be packaged 3.

  The center sealing device 16 seals both side edge portions 5a of the polymerized belt-like film 5. The center seal device 16 includes a pair of left and right sealers, and heats the pinned film by sandwiching and heating the overlapped portions of the side edge portions 5a of the belt-like film 5 with the pair of sealers.

  The restraining belt 19 is disposed in the immediate vicinity of the upstream side of the top seal device 20 so that the article 3 in the tubular film 14 is prevented from being lifted upward and can be conveyed while maintaining a horizontal state. Yes.

  The top seal device 20 seals and cuts the tubular film 14 in a direction orthogonal to the traveling direction of the film, that is, in a direction crossing the film. The top seal device 20 is of a so-called box motion type, and a pair of top sealers 21 and 22 arranged on the upper and lower sides revolves along a predetermined locus while maintaining the state in which the seal surfaces 21a and 22a face each other. A drive mechanism for moving is provided. Both the top sealers 21 and 22 operated by this drive mechanism move toward each other from a reference position separated by a predetermined distance, and sandwich the tubular film 14 from above and below, so that the film portions that are in contact with the sealing surfaces 21a and 22a are located. Pressurize at a predetermined pressure and heat. Both the top sealers 21 and 22 move forward along the moving direction of the tubular film 14 while maintaining the state in which the tubular films 14 are held close to each other as described above. The moving speed at this time is equal to the moving speed of the tubular film 14. During this movement, the sandwiched cylindrical film is cut. Both the top sealers 21 and 22 move away from each other when moved by a predetermined distance, and move in the direction opposite to the moving direction of the tubular film 14 to reach the reference position. The film part to be sealed / cut is a predetermined position between the front and back objects 3 to be packaged. Thereby, the top part of the cylindrical film 14 is isolate | separated from the succeeding by passing the top seal apparatus 20, and the package 25 is manufactured.

  Further, in the present embodiment, a first side guide 26 and a second side guide 27 that guide the package 3 to be included via the left and right side surfaces of the tubular film 14 are provided above the conveying surface of the belt conveyor 17. Has been placed. The first side guide 26 is disposed on the back side of the packaging machine body 1 and the belt conveyor 17 (left side in the transport direction), and the second side guide 27 is disposed on the front side of the packaging machine body 1 and the belt conveyor 17 (in the transport direction). Place on the right). Further, the packaging machine body 1 includes a position adjustment mechanism 30 that adjusts the position of the pair of left and right first side guides 26 and second side guides 27 in the lateral direction (direction orthogonal to the conveyance direction of the tubular film 14). Prepare.

  The position adjusting mechanism 30 according to the present embodiment changes the interval while maintaining the state in which the distances from the reference position are equal, for example, by causing the first side guide 26 and the second side guide 27 to approach and separate at the same time as in the prior art. And a function of adjusting the positions of the first side guide 26 and the second side guide 27 individually. A specific configuration example for realizing the two functions is as follows.

  FIG. 3 and subsequent figures show a preferred embodiment of the position adjustment mechanism 30. The first side guide 26 disposed on the back side of the apparatus is supported by the first side guide bracket 31 at two locations on the front and rear sides. These two first side guide brackets 31 are linked together on the first base plate 32. The first base plate 32 is formed in an elongated strip shape that is arranged in parallel along the transport direction below the back side of the belt conveyor 17. The first side guide brackets 31 are connected to both ends in the longitudinal direction of the upper surface of the first base plate 32 (front and rear along the transport direction). Thereby, the first side guide 26, the two first side guide brackets 31, and the first base plate 32 are integrated. For example, when the first base plate 32 is moved perpendicularly to the transport direction, the first side guide 26 The guide 26 also moves in the same direction.

  More specifically, the first side guide bracket 31 connects a plurality of members so that the overall shape is substantially U-shaped, and the upper end 31 a thereof is connected to the first side guide 26. The lower end 31 b of the first side guide bracket 31 is linked to the first base plate 32 via the first front mounting plate 35 or the first rear mounting plate 36. That is, on the upper surface of the first base plate 32, the first front mounting plate 35 is disposed in an upright state at the front, that is, downstream in the transport direction, and the first rear mounting plate 36 is in the upright state at the rear, that is, upstream in the transport direction. It is arranged with. The first front mounting plate 35 and the first rear mounting plate 36 in a standing state are flat plates, and their planes are arranged in parallel with the transport direction. The lower end portion 31b of one first side guide bracket 31 is connected with a bolt, a set screw, or the like while being in contact with the side surface of the first front mounting plate 35 on the front side in the transport direction. Further, the lower end portion 31b of the other first side guide bracket 31 is connected by a bolt, a set screw, or the like while being in contact with the side surface of the first rear mounting plate 36 on the rear side in the transport direction.

  Similarly, the second side guide 27 disposed on the front side of the apparatus is supported by the second side guide bracket 33 at two locations on the front and rear sides. These two second side guide brackets 33 are both linked to the vicinity of both front and rear ends on a second base plate 34 formed in an elongated strip shape arranged in parallel along the transport direction below the front side of the belt conveyor 17. Is done. The linkage with the second base plate 34 is performed via a second front mounting plate 38 and a second rear mounting plate 39 which are arranged on the upper surface of the second base plate 34 in the front-rear direction along the film transport direction. The second front mounting plate 38 and the second rear mounting plate 39 are both plate-shaped, and their planes are arranged in parallel with the transport direction.

  The second side guide bracket 33 connects a plurality of members and has a substantially U-shaped overall shape, and the upper end 33 a thereof is connected to the second side guide 27. Further, the lower end portions 33b of the two second side guide brackets 33 arranged in the front-rear direction are connected to predetermined side surfaces of the second front mounting plate 38 and the second rear mounting plate 39, respectively. As a result, the second side guide 27, the two second side guide brackets 33, and the second base plate 34 are integrated. For example, when the second base plate 34 is moved perpendicularly to the transport direction, the second side guide 27 The guide 27 also moves in the same direction.

  The first base plate 32 and the second base plate 34 are arranged in parallel at a predetermined interval. A guide plate 60 is disposed above the first base plate 32 and the second base plate 34 so as to span the first base plate 32 and the second base plate 34. The guide plate 60 is in the form of an elongated band, and two guide plates 60 are arranged in parallel in the front-rear direction along the film transport direction. At both ends of the guide plate 60 in the longitudinal direction, connecting plates 61 that are standing upward are attached. The connecting plate 61 is linked to a machine frame of an apparatus not shown. Thereby, the two guide plates 60 are fixedly installed.

  The pair of front and rear guide plates 60, the first base plate 32, and the second base plate 34 are linked together through linear guides 65 such as LM guides. Rails 62 are attached to the lower surface of the guide plate 60 on both sides in the longitudinal direction. A block body 63 that is a bearing that is linked to the rail 62 and slides along the rail 62 is attached to the upper surfaces of the first base plate 32 and the second base plate 34. The rail 62 and the block body 63 constitute a linear guide 65. Therefore, the first base plate 32 and the second base plate 34 are linked to the rail 62 of the guide plate 60 at two locations along the longitudinal direction, respectively, and the function of the linear guide 65 enables the smooth and stable longitudinal direction of the guide plate 60. Reciprocate along.

  The first front mounting plate 35 and the second front mounting plate 38 are arranged to face each other, and are provided with through holes 35a and 38a on the opposing surfaces, respectively. The first screw shaft 40 is mounted so as to penetrate the through holes 35a and 38a. The inner diameters of the through holes 35 a and 38 a are set to be larger than the outer diameter of the first screw shaft 40. Therefore, when the first screw shaft 40 in the state of passing through the through holes 35a and 38a is rotated forward and backward, the portions of the through holes 35a and 38a are idled to allow the rotation. Both ends of the first screw shaft 40 penetrate the first front mounting plate 35 and the second front mounting plate 38 and protrude outward, and are rotatably supported by bearing brackets 41 disposed on the outer sides thereof. Each of the pair of bearing brackets 41 is fixed to a machine frame of a device (not shown). Further, a disc-shaped first handle 42 is attached to the front end of the first screw shaft 40, and the first screw shaft 40 rotates forward and backward by rotating the first handle 42 forward and backward. Furthermore, an indicator 43 is provided between the first handle 42 and the bearing bracket 41.

  The numerical value displayed on the display unit 43a of the indicator 43 increases or decreases with the rotation of the first screw shaft 40 arranged so as to penetrate the first handle 42 and thus the inside of the indicator 43. The numerical value displayed on the display unit 43a is, for example, the distance from the reference position to the first side guide 26. The reference position is, for example, a position where a pair of left and right sealers of the center seal device 16 come into contact with each other, and both side edge portions of the belt-like film 5 formed in a cylindrical shape by the bag making device 15 in a direction orthogonal to the transport direction. A position where 5a is formed.

  The first screw shaft 40 includes a first normal male screw portion 40a in which a normal screw is cut in a predetermined section on both ends, and a first reverse male screw portion 40b in which a reverse screw is cut. In the present embodiment, the first positive male screw portion 40a is arranged on the front side and the first reverse male screw portion 40b is arranged on the back side, but it may be reversed. Furthermore, in this embodiment shown in FIGS. 3-9, the 1st internal thread piece 44 is connected to the outer surface side of the 1st front attachment plate 35 located in the back | rear side so that attachment or detachment is possible. In the present embodiment, the first female screw piece 44 is fixed using two set screws 45. The first female screw piece 44 includes a female screw portion 44a that penetrates in the axial direction at the center of the disk-shaped main body. The female screw portion 44 a is a reverse screw and is screwed with a first reverse male screw portion 40 b provided on the back side of the first screw shaft 40. Therefore, since the first female screw piece 44 is fixed to the first front mounting plate 35, when the first screw shaft 40 rotates forward and backward, the first reverse male screw portion of the first screw shaft 40 is accordingly accompanied. The first female screw piece 44 reciprocates along the axial direction of the first screw shaft 40 from the fitting of the female screw portion 44 a of the first female screw piece 44. As a result, the first front mounting plate 35 and the first side guide 26 connected to the first female screw piece 44 reciprocate along the axial direction of the first screw shaft 40.

  On the other hand, on the second front mounting plate 38 side, a member that engages with the first positive male screw portion 40a is not attached as in the first female screw piece 44 described above. Therefore, as described above, the through-hole 38a of the second front mounting plate 38 is in a so-called fooled hole state with respect to the first screw shaft 40, so that even if the first screw shaft 40 rotates forward and backward, The front mounting plate 38 and the second side guide 27 do not move.

  Therefore, when the first handle 42 is rotated forward and backward, only the first side guide 26 on the back side reciprocates along the axial direction of the first screw shaft 40, and the lateral direction orthogonal to the single conveying direction is obtained. Position adjustment is possible.

  On the other hand, the first rear mounting plate 36 and the second rear mounting plate 39 are arranged to face each other, and are provided with through holes 36a and 39a on the facing surfaces, respectively. The second screw shaft 50 is mounted so as to penetrate the through holes 36a and 39a. The inner diameters of the through holes 36 a and 39 a are set to be larger than the outer diameter of the second screw shaft 50. Therefore, when the second screw shaft 50 penetrating into the through holes 36a and 39a is rotated forward and backward, the portions of the through holes 36a and 39a are idled to allow the rotation. The second screw shaft 50 and the first screw shaft 40 are arranged in parallel, and are also arranged in parallel with the guide plate 60.

  Both ends of the second screw shaft 50 penetrate the first rear mounting plate 36 and the second rear mounting plate 39 and protrude outward, and are rotatably supported by bearing brackets 51 respectively disposed on the outer sides thereof. Each of the pair of bearing brackets 51 is fixed to a machine frame of a device (not shown). Further, a disc-shaped second handle 52 is attached to the front end of the second screw shaft 50, and the second screw shaft 50 rotates forward and backward by rotating the second handle 52 forward and backward. Furthermore, an indicator 53 is provided between the second handle 52 and the bearing bracket 51.

  The numerical value displayed on the display unit 53a of the indicator 53 increases or decreases with the rotation of the second screw shaft 50 disposed so as to penetrate the second handle 52 and thus the indicator 53. The numerical value displayed on the display unit 53a is, for example, the distance from the reference position to the second side guide 27. Therefore, when the numerical values displayed on the display unit 43a and the display unit 53a are the same, the distance from the center reference position to the first side guide 26 is equal to the distance to the second side guide 27, and the center adjustment is performed. It will be done. On the other hand, when the numerical values displayed on the display unit 43a and the display unit 53a are different, the center is shifted and decentered.

  The second screw shaft 50 includes a second normal male screw portion 50a in which a normal screw is cut in a predetermined section on both ends, and a second reverse male screw portion 50b in which a reverse screw is cut. Also, the second positive male screw portion 50a on the front side has the same screw specifications as the first positive male screw portion 40a provided on the front side of the first screw shaft 40, such as the direction and pitch of the screw. The back side second reverse male screw portion 50b has the same screw specifications as the first reverse male screw portion 40b provided on the back side of the first screw shaft 40.

  Furthermore, in this embodiment shown in FIGS. 3-9, the 2nd internal thread piece 54 is connected to the outer surface side of the 2nd back attachment plate 39 located in a near side so that attachment or detachment is possible. In the present embodiment, the second female screw piece 54 is fixed using two set screws 55. The second female screw piece 54 includes a female screw portion 54a that penetrates in the axial direction at the center of the disc-shaped main body. The female thread portion 54 a is a positive thread and is engaged with a second positive male thread portion 50 a provided on the front side of the second screw shaft 50. Therefore, since the second female screw piece 54 is fixed to the second rear mounting plate 39, when the second screw shaft 50 rotates in the forward and reverse directions, the second positive male screw portion of the second screw shaft 50 accordingly. The second female screw piece 54 reciprocates along the axial direction of the second screw shaft 50 from the fitting of the female screw part 54a of the second female screw piece 54a. As a result, the second rear mounting plate 39 and the second side guide 27 connected to the second female screw piece 54 reciprocate along the axial direction of the second screw shaft 50.

  On the other hand, on the first rear mounting plate 36 side, a member that is screwed with the second reverse male screw portion 50b is not attached like the second female screw piece 54 described above. Therefore, as described above, the through-hole 36a of the first rear mounting plate 36 is in a so-called fooled hole state with respect to the second screw shaft 50, and even if the second screw shaft 50 rotates forward and backward, The rear mounting plate 36 and thus the first side guide 26 do not move.

  Accordingly, when the second handle 52 is rotated forward and backward, only the second side guide 27 on the near side reciprocates along the axial direction of the second screw shaft 50, and the lateral direction orthogonal to the single conveying direction. Position adjustment is possible.

  Therefore, the user can adjust the positions of the first side guide 26 and the second side guide 27 independently by appropriately operating the first handle 42 and the second handle 52. As a result, for example, when the position of the center seal that is to be shifted by a predetermined distance from the center in the width direction is offset by shifting in the width direction, the position of the center seal portion in the package body is adjusted accordingly without replacing the side guide. The positions of the first side guide 26 and the second side guide 27 can be adjusted to appropriate distances from the reference position where the pair of sealers of the center seal device 16 contact each other.

  In the embodiment described above, the first female screw piece 44 and the second female screw piece 54 are detachably attached to the first front attachment plate 35 and the second rear attachment plate 39, respectively. For example, the first reverse male screw portion 40b on the back side of the first screw shaft 40 and the second reverse male screw portion 50b on the back side of the second screw shaft 50 have the same screw specifications. Can also be attached to the second reverse male screw portion 50 b on the back side of the second screw shaft 50. Therefore, for example, the first female screw piece 44 is removed from the first screw shaft 40 by removing the bearing bracket 41 on the back side of the first screw shaft 40 and removing the set screw 45. After removing the first female thread piece 44, the bearing bracket 41 is set and the back end of the first screw shaft 40 is supported by the bearing. Then, the removed first female screw piece 44 is mounted from the back side of the second screw shaft 50, linked to the second reverse male screw portion 50 b, and fixed to the first rear mounting plate 36 using a set screw 45.

  Accordingly, as shown in FIG. 10, the first female screw piece 44 and the second female screw piece 54 are mounted on the back side and the near side of the second screw shaft 50, respectively. When the second screw shaft 50 is rotated forward and backward in this state, the first female screw piece 44, the second female screw piece 54, and thus the first side guide 26 and the second side guide 27 approach and separate from each other. That is, the center position between the first side guide 26 and the second side guide 27 when the first female thread piece 44 is attached is always the center reference position, and approaches and separates from each other. adjust. As described above, the positions of the first side guide 26 and the second side guide 27 are adjusted at the same time by an operation on one screw shaft, as in the prior art.

  In addition, any female screw piece is not linked to the first screw shaft 40, and is in a free state. Therefore, even if the first screw shaft 40 is rotated forward and backward, neither the first side guide 26 nor the second side guide 27 moves.

  Contrary to the above, the second female screw piece 54 attached to the front side of the second screw shaft 50 is removed from the state of the above-described embodiment, and is connected to the second front mounting plate 38 on the front side of the first screw shaft 40. Then, as shown in FIG. 11, the first female screw piece 44 and the second female screw piece 54 are linked to both sides of the first screw shaft 40. Thereby, the 1st screw shaft 40 becomes an operation axis, and the 1st side guide 26 and the 2nd side guide 27 can be approached and separated.

  Furthermore, when adjusting the position of the first side guide 26 and the second side guide 27 separately, the second female screw piece 54 is attached to the front side of the first screw shaft 40 in the opposite direction to the above-described embodiment, and the second screw The first female thread piece 44 may be attached to the back side of the shaft 50 (see FIG. 12).

  As described above, by appropriately changing the position where the female screw piece is attached to the screw shaft, the first side guide 26 and the second side guide 27 can be simultaneously adjusted or individually adjusted. The side guides that move with the rotation of the first screw shaft 40 and the second screw shaft 50 can be appropriately changed.

  In the above-described embodiment, each female screw piece is attached to the outside of the attachment plate, but one or both may be attached to the inside of the attachment plate.

  Further, in the above-described embodiment, each female screw piece forms a female screw portion penetrating in the axial direction in the center of the disk-shaped main body, and is configured as an endless integral in the circumferential direction. The structure is not limited to this. For example, a half-shaped structure having an inner diameter screw may be used. In this way, it is possible to attach and detach the female screw piece to the screw shaft without removing the bearing bracket, and the attachment work can be facilitated. Each female screw piece may have a female screw portion in a state where it is attached to the screw shaft, and the outer shape is not limited to a disk and can take any other shape such as a rectangle.

  Moreover, although the example applied to the pillow wrapping machine in which the side edge portions 5a of the belt-like film 5 are on the lower side is shown in the above-described embodiment, the embodiment is applied to the reverse pillow wrapping machine in which the side edge portions 5a are overlapped on the upper side. It can also be used for various other packaging machines.

  Moreover, in embodiment mentioned above, although it used for position adjustment of a side guide, this invention is not restricted to this, It can be used for position adjustment of various apparatuses and apparatus.

  As described above, various aspects of the present invention have been described using the embodiments and the modifications. However, these embodiments and descriptions are not intended to limit the scope of the present invention, and are for understanding the present invention. It is added that it was provided to contribute. The scope of the present invention is not limited to the configurations and manufacturing methods explicitly described in the specification, and includes combinations of various aspects of the present invention disclosed in the present specification. Among the present inventions, the configuration for which a patent is sought is specified in the appended claims, but the present invention is disclosed in this specification even if the configuration is not specified in the claims. I would like to remind you that there is a possibility of claiming this configuration in the future.

17 Belt conveyor (conveyor)
26 first side guide 27 second side guide 30 position adjusting mechanism 31 first side guide bracket 32 first base plate 33 second side guide bracket 34 second base plate 35 first front mounting plate 36 first rear mounting plate 38 second front Mounting plate 39 Second rear mounting plate 40 First screw shaft 40a First positive male screw portion 40b First reverse male screw portion 44 First female screw piece 50 Second screw shaft 40a Second positive male screw portion 40b Second reverse male screw portion 54 Second Female thread top 60 Guide plate 65 Linear guide

Claims (5)

A position adjusting mechanism that moves a plurality of moving objects arranged at predetermined intervals close to and away from each other and adjusts the position of the moving object in the moving direction;
A first screw shaft disposed in parallel with the moving direction, and a second screw shaft,
One of the axial sides of the first screw shaft has a first positive male screw portion of a normal screw, and the other of both sides has a first reverse male screw portion of a reverse screw,
One of the two axial sides of the second screw shaft has a second positive male screw portion of a normal screw, and the other of both sides has a second reverse male screw portion of a reverse screw,
A first female screw piece that can be detachably attached to both the first positive male screw part and the second positive male screw part;
A second female screw piece that can be detachably attached to both the first reverse male screw portion and the second reverse male screw portion;
With
As the first screw shaft or the second screw shaft mounted with the first female screw piece moves forward and backward, the first female screw piece reciprocates along the axial direction. One of the moving objects moves,
As the first screw shaft or the second screw shaft mounted with the second female screw piece moves forward and backward, the second female screw piece reciprocates along the axial direction. A position adjusting mechanism characterized in that the other of the plurality of moving objects is moved. A pair of base plates are arranged to extend in a direction perpendicular to the moving direction,
On the surface of the pair of base plates, two pairs of attachment plates attached to face each other are provided,
Each of the pair of mounting plates has a through hole,
The first screw shaft is inserted into the through hole of the pair of mounting plates in one of the two sets,
The second screw shaft is inserted into the through hole of the other pair of mounting plates of the two sets,
The first female screw piece and the second female screw piece are fixed in a state of being connected to the mounting plate,
The position adjustment mechanism according to claim 1, wherein the moving object is moved integrally with the base plate.   The position adjusting mechanism according to claim 2, wherein the moving object is supported by the base plate through a support member at a plurality of locations.   4. The position adjusting mechanism according to claim 2, wherein the pair of base plates are guided to move in the moving direction by a linear guide. 5. 5. The position adjusting mechanism according to claim 1, wherein the moving object is a side guide disposed on both sides in a transport direction of a transport device.

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