Guide position adjusting device, folding and gluing machine and box making machine, and bending guide position adjusting method

Abstract

The present invention aims to provide a guide position adjustment device that can ensure folding accuracy even for corrugated cardboard with a deep box depth (including the apparent box depth). The guide position adjustment device is mounted on a folding gluing machine in pairs and has an upstream guide member (10) and a downstream guide member (13) arranged sequentially from the upstream side of the cardboard travel direction. It is mounted on a bending guide device having a frame moving mechanism (46) that moves the support frame (5) supporting the upstream guide member (10) and the downstream guide member (13) in a direction parallel to the device width direction perpendicular to the cardboard travel direction by a first actuator. The upstream guide member (10) has an exit guide member moving mechanism (50). The exit guide member moving mechanism (50) is moved by a second actuator (51) in a range in the device width direction relative to the support frame (5) within a range inward from the device width direction position of the inlet side front end limit of the upstream guide member (10).

Description

Technical Field

[0001] This invention relates to a guide position adjustment device mounted on a folding gluing machine, the folding gluing machine and a box-making machine, and a method for adjusting the position of the bending guide, wherein the folding gluing machine is installed in the box-making machine and folds corrugated cardboard into boxes. Background Technology

[0002] The box-making machine includes a folding device for corrugated cardboard, called a folding glue machine. For existing technology regarding this folding glue machine, please refer to... Figure 9 Please provide an explanation.

[0003] Figure 9 This is a 3D diagram illustrating the general structure of a folding adhesive machine, such as... Figure 9 As shown, corrugated cardboard 1 is processed with grid lines C and slots S by the upstream slotting and creasing section (not shown), and then folded into a box (corrugated cardboard box) by a folding and gluing machine. Additionally, in Figure 9 The grid lines C1 and C2 are indicated by dashed lines, representing the grid lines bent by the folding adhesive machine.

[0004] The folding gluing machine has left and right upper frames 2 arranged along the direction of the cardboard's movement. Each upper frame 2 has a pulley 3 at its inlet and outlet (the outlet side is not shown in the diagram). Conveyor belts 4 are hung on the inlet and outlet pulleys 3. Similarly, lower frames 5 are provided below each left and right conveyor belt 4, and each conveyor belt 4 travels on the upper surface of its corresponding lower frame 5.

[0005] After the corrugated cardboard 1 is coated with paste at the seam formed on either of the left or right panels, it is fed between the conveyor belts 4 and the lower frame 5. It is then held on the conveyor belts 4 by friction and moves by sliding on the upper surface of the lower frame 5. Alternatively, the corrugated cardboard 1 is held and moved while being clamped and held by a conveyor belt (not shown) and the aforementioned conveyor belts 4, which are mounted along the travel path above the lower frame 5. The lower frame 5 is located further inward than the folding grid lines C1 and C2 (closer to the center of the machine). A folding ruler 6 is supported on the lower frame 5 and is provided along the travel path of the corrugated cardboard 1. A folding rod 7 is provided along the travel path outside the travel path of the corrugated cardboard 1.

[0006] As the corrugated cardboard 1 travels, its folding position is precisely limited by the front end of the folding ruler 6 while it is pressed down by the folding rod 7. When the corrugated cardboard 1 travels to the downstream section and the folding angle approaches 180°, it is further folded by the folding belt 8. Then, one of the seams on the left and right panels and the other seam on the left and right panels are joined together with glue, thus completing the box.

[0007] If the folding of corrugated cardboard by this type of folding and gluing machine is not performed at the accurate folding position, it can sometimes cause poor box precision.

[0008] Patent document 1 discloses a technology for setting an adjustment mechanism, which finely adjusts the lateral tilt state of the front end restriction of the corrugated cardboard by moving the main parts of the folding ruler 6, which was previously fixed to the lower frame, in the width direction of the device.

[0009] In this technology, such as Figure 10 As shown, the folding ruler (hereinafter referred to as "bending guide") 6 is divided into three parts: an inlet side ruler (hereinafter referred to as "first bending guide") 11, an outlet side ruler (hereinafter referred to as "third bending guide") 13, and a middle ruler (hereinafter referred to as "second bending guide") 12. The first bending guide 11 can be configured to move parallel to the width of the device relative to the lower frame. The third bending guide 13 is positioned at a position offset further inward in the width of the device than the first bending guide 11 and is fixed relative to the lower frame 5. The second bending guide 12 is configured to have its two ends connected to the two bending guides 11 and 13 respectively by pins to smoothly connect the front end limiting parts of the two bending guides 11 and 13.

[0010] The corrugated cardboard 1 is gradually folded along the grid lines during the process of passing through the second bending guide 12. However, in order to correspond to the grid line position on the inner surface side of the folded portion of the corrugated cardboard 1 gradually moving inward in the width direction of the device, the left and right second bending guides 12 are configured to be laterally tilted so that the position of their front end restricting portion gradually moves closer to the inner side of the width direction of the device as they move downstream in the direction of movement of the corrugated cardboard.

[0011] The technology is described as follows: According to this technology, the front end restrictor can be aligned with the grid lines on the inside of the folded portion of the corrugated cardboard with high precision, thereby achieving high folding precision of the corrugated cardboard and improving the manufacturing precision of corrugated cardboard boxes.

[0012] Furthermore, Patent Document 2 discloses the following technology: a detection device for detecting the passage of corrugated cardboard is arranged upstream of a bending plate located in the first half of the corrugated cardboard folding region from 0 degrees to approximately 90 degrees. When the detection device detects the passage of corrugated cardboard, a pressing mechanism temporarily pushes the bending plate outward only a predetermined distance in the width direction and moves it, thereby expanding the downstream portion of the folded panel of the corrugated cardboard in the width direction. Thus, the main idea is that in the first half of the corrugated cardboard folding process, the bending lines of the two panels on both sides of the corrugated cardboard are kept in a non-tilted state, and in the second half of the process, the bending of the two panels continues, thereby enabling the production of boxes without fishtail wrinkles.

[0013] Previous technical documents

[0014] Patent documents

[0015] Patent Document 1: Japanese Patent No. 4609809

[0016] Patent Document 2: Japanese Patent No. 5895316 Summary of the Invention

[0017] The technical problem to be solved by the invention

[0018] However, in recent years, a manufacturing method called 2-up production has been increasing, in which two boxes are arranged one after the other in the direction of the corrugated cardboard conveyor. In this case, since the cardboard is passed through in a front-to-back connection, the apparent box depth is greater.

[0019] And, as Figure 10 As shown, the third bending guide 13 gradually includes a first guide plate 13A and a second guide plate 13B from the upstream side. The downstream half of the second guide plate 13B is configured to be laterally inclined so that the position of the front end limiting part gradually approaches the inner side of the device width direction downstream.

[0020] Therefore, for example, when bending with the front end of the corrugated cardboard 1 (the end in the forward direction of the cardboard conveying direction) as a reference, in cardboard with a deep box depth, even if the front end of the corrugated cardboard properly contacts the downstream half of the second guide plate 13B, the rear end of the corrugated cardboard 1 will embrace the upstream half of the first guide plate 13A and the second guide plate 13B, thus causing instability in the folding accuracy.

[0021] To solve this problem, it is considered to move the third bending guide 13 (first guide plate 13A, second guide plate 13B) inward relative to the lower frame 5 in the width direction of the device. However, in the part of the third bending guide 13, since the corrugated cardboard 1 is bent to more than 90°, it is not possible to ensure the space for assembling the mechanism that moves the third bending guide 13, making it difficult to implement this countermeasure.

[0022] In contrast, for example, if the lower frame supporting the third bending guide 13 and the lower frame supporting the first bending guide 11 and the second bending guide 12 are moved independently inward in the width direction of the device so that the third bending guide 13 (the first guide plate 13A and the second guide plate 13B) can be moved inward as a whole in the width direction of the device, it is possible to prevent the rear end of the corrugated cardboard from gripping the upstream half of the first guide plate 13A and the second guide plate 13B.

[0023] However, since the front end of the second bending guide 12 is connected to the rear end of the third bending guide 13 (the rear end of the first guide plate 13A) by a pin, if the third bending guide 13 is moved, the front end of the second bending guide 12, that is, the outlet of the second bending guide 12, also moves inward in the width direction of the device.

[0024] As described above, the corrugated cardboard 1 is gradually folded along the grid lines as it passes through the second bending guide 12, and the exit of the second bending guide 12 is also an important part in determining the bending position. Therefore, if the exit of the second bending guide 12 moves inward in the width direction of the device, it will become a cause of instability in the folding accuracy.

[0025] Furthermore, as described above, the corrugated cardboard 1 is gradually folded along the grid lines during the passage of the second bending guide 12. However, during this folding process, the grid line position on the inner surface side of the folded portion of the corrugated cardboard 1 gradually moves inward in the width direction of the device. In the invention of Patent Document 2, to reverse this behavior, the extrusion mechanism pushes the bending member outward only a predetermined distance in the width direction and moves it, thereby expanding the downstream portions of the first panel and the fourth panel in the width direction. Therefore, the extrusion mechanism applies unnatural pressure to the corrugated cardboard 1, which may generate conveying resistance to the corrugated cardboard 1.

[0026] This invention was created with regard to this problem, and its purpose is to provide a guide position adjustment device that can ensure folding accuracy even for corrugated cardboard with a deep box depth (including apparent box depth), a folding glue machine equipped with the guide position adjustment device, a box making machine equipped with the folding glue machine, and a method for adjusting the position of the bending guide.

[0027] means for solving technical problems

[0028] The guide position adjustment device of this case is characterized by being mounted in pairs on a folding gluing machine that folds corrugated cardboard into a box while moving it in the cardboard travel direction. It includes an upstream guide member and a downstream guide member arranged sequentially from the upstream side of the cardboard travel direction. It is also mounted on a bending guide device having a frame moving mechanism that moves a support frame supporting the upstream and downstream guide members parallel to the device width direction perpendicular to the cardboard travel direction by a first actuator. The upstream guide member includes: at least an inlet-side front end restriction and an outlet-side front end restriction of the upstream guide member, which are in contact with the bent portion of the corrugated cardboard; and an outlet-side guide member moving mechanism that moves the outlet-side front end restriction relative to the support frame within a range inside the device width direction position of the inlet-side front end restriction in the device width direction by a second actuator.

[0029] The folding adhesive machine of this case is characterized by having the aforementioned guide position adjustment device.

[0030] The box-making machine in this case is characterized by having the aforementioned folding and gluing machine.

[0031] The bending guide position adjustment method of this case is characterized by adjusting the device width direction position of the upstream guide member and the downstream guide member by a guide position adjustment device, wherein the guide position adjustment device is the aforementioned guide position adjustment device, and further includes an entrance side guide moving mechanism that moves the entrance side front end limiting portion of the upstream guide member in the device width direction by a third actuator. Specifically, when the travel direction length of the corrugated cardboard is above a predetermined value, and when the travel direction length is less than the predetermined value, the first actuator is activated to move the support frame parallel to the inside in the device width direction, and the third actuator is activated to move at least the entrance side front end limiting portion of the upstream guide member to the outside in the device width direction. Then, the second actuator is activated to move the exit side front end limiting portion to the outside in the device width direction within a range inside the device width direction position of the entrance side front end limiting portion.

[0032] Invention Effects

[0033] According to this invention, the front end restricting part of the guide corrugated cardboard can be aligned with the grid lines on the inside of the folded portion (i.e., the panel) of the corrugated cardboard with high precision, which can easily and accurately obtain high folding precision of the corrugated cardboard, thereby significantly improving the manufacturing precision of corrugated cardboard boxes. Attached Figure Description

[0034] exist Figure 1 middle, Figure 1 A and Figure 1 B is a top view showing the main parts of a folding adhesive machine according to an embodiment of the present invention. Figure 1 A represents the implementation method. Figure 1 B represents a local variation of the implementation method.

[0035] Figure 2 This is a cross-sectional view (along the direction) of the first bending guide (first guide member) of the guide position adjustment device according to an embodiment of the present invention. Figure 1 (A sectional view cut by section AA).

[0036] exist Figure 3 middle, Figure 3 A, Figure 3 B and Figure 3 C is according to Figure 3 A, Figure 3 B and Figure 3 The sequence C represents a cross-sectional view of the bending state of the corrugated cardboard by the guide member and measuring roller of the guide position adjustment device according to an embodiment of the present invention.

[0037] exist Figure 4 middle, Figure 4 A, Figure 4 B. Figure 4 C and Figure 4 D is a diagram showing the main parts of a guide position adjustment device according to an embodiment of the present invention. Figure 4 A is its plan view. Figure 4 B is a cross-sectional view of its main part (along...) Figure 4 (Cross view of A cut by BB), Figure 4 C is a structural diagram of the main part of its direction-changing mechanism (along...) Figure 4 (Cross view of A cut by CC), Figure 4 D is a plan view representing the main part of its local deformation example.

[0038] exist Figure 5 middle, Figure 5 A, Figure 5 B and Figure 5 C is a plan view of the main part of a folding adhesive machine showing the operation of the guide position adjustment device according to an embodiment of the present invention. Figure 5 A represents its state before the position was adjusted. Figure 5 B indicates that the supporting frame has been moved by its frame moving mechanism. Figure 5 C indicates the state in which the second guide component was subsequently moved by its exit-side guide moving mechanism.

[0039] exist Figure 6 middle, Figure 6 A, Figure 6 B. Figure 6 C and Figure 6 D is a plan view and a sectional view of the main parts of the comparative example of the bending guide device, illustrating the effects of an embodiment of the present invention. Figure 6 A is a plan view of the main parts when manufacturing short corrugated cardboard in the direction of travel. Figure 6 B is a cross-sectional view of the main part when manufacturing short corrugated cardboard in the direction of travel (along...). Figure 6 (Cross view of A cut by DD), Figure 6 C is a plan view of the main parts when manufacturing corrugated cardboard that is long in the direction of travel. Figure 6 D is a cross-sectional view of the main part of the corrugated cardboard when it is manufactured in the direction of travel (along...). Figure 6 (Cross view of EE section of C).

[0040] exist Figure 7 middle, Figure 7 A, Figure 7 B. Figure 7 C and Figure 7D is a plan view and a sectional view of the main parts of the bending guide device illustrating the effects involved in one embodiment of the present invention. Figure 7 A is a plan view of the main parts when manufacturing short corrugated cardboard in the direction of travel. Figure 7 B is a cross-sectional view of the main part when manufacturing short corrugated cardboard in the direction of travel (along...). Figure 7 (sectional view of A cut by FF), Figure 7 C is a plan view of the main parts when manufacturing corrugated cardboard that is long in the direction of travel. Figure 7 D is a cross-sectional view of the main part of the corrugated cardboard when it is manufactured in the direction of travel (along...). Figure 7 (Cross-sectional view of C cut by GG section).

[0041] exist Figure 8 middle, Figure 8 A, Figure 8 B. Figure 8 C Figure 8 D and Figure 8 E is a plan view of the main part of a modified example of the guide position adjustment device according to an embodiment of the present invention. Figure 8 A represents the first variation. Figure 8 B represents the second variation. Figure 8 C represents the third variation. Figure 8 D represents the fourth variation. Figure 8 E is a plan view showing the main part of the partial modifications of the third and fourth modifications.

[0042] Figure 9 This is a perspective view of the folding adhesive machine involved in the background technology.

[0043] Figure 10 This is a top view showing the configuration structure of the bending guide (folding ruler) of the folding adhesive machine involved in the background art. Detailed Implementation

[0044] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

[0045] Figure 1 ( Figure 1 A and Figure 1 B)~ Figure 3 ( Figure 3 A, Figure 3 B and Figure 3 C) is a diagram showing the main parts of a folding adhesive machine according to an embodiment of the present invention. Figure 1 A is its plan view. Figure 2 This is a cross-sectional view of its first guide component. Figure 3 This is a diagram showing the main parts of its guide position adjustment device.

[0046] The folding adhesive machine of this embodiment is installed in a box-making machine, and its general structure is the same as that of the prior art, except for the guide position adjustment device and its periphery. That is, in reference Figure 9 In this case, the folding and gluing machine in the box-making machine has left and right upper frames 2 arranged along the direction of the cardboard's movement. Each upper frame 2 has a pulley 3 at its inlet and outlet (the outlet side is not shown). Conveyor belts 4 are attached to the inlet and outlet pulleys 3. Similarly, lower frames (support frames) 5 are located below each of the left and right conveyor belts 4, and each conveyor belt 4 travels on the upper surface of its corresponding lower frame 5. The corrugated cardboard 1 is fed between these conveyor belts 4 and the lower frames 5, and is held on the conveyor belts 4 by friction, sliding and moving on the upper surface of the lower frames 5. Alternatively, the corrugated cardboard 1 is held and moved while being clamped and held by a conveyor belt (not shown) and the aforementioned conveyor belts 4, which are mounted along the travel path above the lower frames 5. The lower frames 5 are located further inward than the bending grid lines C1 and C2 (closer to the center of the machine).

[0047] The bending guide 6 is supported on the lower frame 5 and is provided along the travel path of the corrugated cardboard 1. A folding rod 7 is provided on the outer side of the travel path of the corrugated cardboard 1. During travel, the corrugated cardboard 1 is folded by the folding rod 7 while the folding position is accurately limited by the front end of the bending guide 6, which accurately controls the folding position. When the corrugated cardboard 1 travels to the downstream section and the folding angle approaches 180°, it is further folded by the folding belt 8.

[0048] In this folding adhesive machine, such as Figure 1 As shown in Figure A, the bending guide 6 is divided into an upstream bending guide (upstream guide component) 10 and a downstream bending guide (downstream guide component) 13 along the travel direction of the corrugated cardboard 1. Furthermore, the upstream bending guide 10 is further divided into two parts along the travel direction of the corrugated cardboard 1: a first bending guide (first guide component) 11 on the inlet side and a second bending guide (second guide component) 12 on the outlet side. Additionally, Figure 1 A is a plan view showing the main parts of the folding adhesive machine with a focus on the bending guide 6, omitting the upper frame 2, pulley 3, conveyor belt 4, folding rod 7, folding belt 8, etc.

[0049] Furthermore, the first bending guide 11 can be configured to move relative to the lower frame 5, the downstream bending guide 13 is fixed relative to the lower frame 5, and the second bending guide 12 is configured to connect the upstream end of the cardboard in the travel direction to the first bending guide 11 with a pin 30 to restrict the front end portions 11a and 12a of the two bending guides 11 and 12 (see reference). Figure 2 and Figure 3 A) A smooth transition. The details are explained below.

[0050] In addition, such as Figure 1 As shown in Figure B, the upstream bending guide 10 can also be a single, undivided piece. Additionally... Figure 1 B is only shown in Figure 1 For simplicity, only one upstream bending guide 10 is shown in section A, which is enclosed by a single dotted line. However, both upstream bending guides 10 are constructed from a single piece. When the upstream bending guide 10 is constructed from a single piece, a pin 30 connects the upstream end of the upstream bending guide 10 to the sliding arm 21 (see reference). Figure 2 The sliding arm 21 is slidably mounted on the pin 20 (described later).

[0051] like Figure 2 As shown, the entrance side pin 20 of the lower frame 5 is mounted at a right angle (perpendicular to the corrugated cardboard guiding direction of the first bending guide 11, i.e., the width direction of the device). Figure 2 As shown, a U-shaped sliding arm 21 is slidably mounted on the pin 20. On the other hand, the shaft 23 on the lower frame 5 is rotatably supported by the bearing 22.

[0052] The shaft 23 is oriented with its centerline perpendicular to the pin 20, and an eccentric wheel 24 is mounted on the shaft 23. The shaft 23 is driven to rotate by a motor (third actuator) 25. Therefore, if the eccentric wheel 24 is rotated, the first bending guide 11 moves along the axial direction of the pin 20 (in... Figure 2 (Left and right) sliding. Therefore, the entrance side guide moving mechanism 45, composed of shaft 23, eccentric wheel 24, motor 25, etc., moves the first bending guide 11 parallel to the width direction of the device.

[0053] The shape of the front end restriction portion (entry-side front end restriction portion) 11a of the first bending guide 11 is not particularly different from the previous one, and the front end restriction portion 13a of the downstream bending guide 13 (see reference) Figure 3 B. Figure 3 C) There are no significant changes from the past, so the explanation is omitted here.

[0054] like Figure 1 As shown in Figure A, the second bending guide 12 is supported by connecting its upstream end to the movable first bending guide 11 with a pin 30, such that the upstream end swings in the width direction of the device according to the movement of the first bending guide 11.

[0055] Furthermore, the second bending guide 12 is supported in such a manner that the downstream end of the cardboard travel direction can be moved relative to the lower frame 5 in the width direction of the device by the exit-side guide moving mechanism 50. Details of the exit-side guide moving mechanism 50 will be described later.

[0056] The corrugated cardboard 1 is gradually folded as it passes through the second bending guide 12. However, during this folding process, in order to correspond to the gradual inward movement of the grid lines on the inner surface of the folded portion of the corrugated cardboard 1 (inner side in the width direction of the device), the left and right second bending guides 12 are configured to be laterally tilted so that the position of their front end restriction (exit side front end restriction) 12a gradually moves closer to the inner side (inner side in the width direction of the device) as they move downstream in the direction of movement of the corrugated cardboard.

[0057] The downstream bending guide 13 has a first guide plate 13A and a second guide plate 13B sequentially from the upstream side. Each guide plate 13A and 13B is plate-shaped and horizontally arranged.

[0058] Furthermore, the front end restricting portions 13Aa and 13Ba of each guide plate 13A and 13B that contact the bent portion of the corrugated cardboard 1 (see reference) Figure 3 B. Figure 3 The downstream side portion of the front end restriction part 13Ba of the second guide plate 13B on the downstream side of C) is configured to be laterally inclined in a manner that gradually approaches the inner side of the device width direction downstream.

[0059] Furthermore, on the downstream side of the second bending guide 12 in the direction of cardboard travel, a plurality of measuring rollers 60 are arranged along the outer side of each guide 12, 13 in the device width direction, near the downstream end of the second bending guide 12. The measuring rollers 60 are rotatably mounted about a vertical axis of rotation and are rotated by a drive motor (not shown).

[0060] In the portion where the measuring roller 60 is configured, such as Figure 3 A~ Figure 3 As shown in C, the corrugated cardboard 1, which is bent to approximately a right angle, is guided by the guides 12 and 13 to the inner side of the cardboard and by the measuring roller 60 to the outer side of the cardboard, thereby gradually performing the bending process.

[0061] And, as Figure 1 As shown in Figure A, a threaded shaft 40 is screwed onto the lower frame 5, and the threaded shaft 40 is driven to rotate by a motor (first actuator) 41. Therefore, if the motor 41 is driven to rotate the threaded shaft 40, the lower frame 5 moves in the mechanical width direction. The threaded shaft 40 and the motor 41 constitute a frame moving mechanism 46 that moves the lower frame 5 in the mechanical width direction and moves the downstream bending guide 13 fixed to the lower frame 5 in the mechanical width direction. Furthermore, although not shown, the upper frame 2 is also integrally formed with the lower frame 5 and moves accordingly.

[0062] Therefore, by cooperating the motor 25 that moves the first bending guide 11 and the motor 41 that moves the lower frame, the position of the first bending guide 11 in the device width direction can be adjusted. Furthermore, this allows for fine-tuning of the position of the front end restrictor 12a of the second bending guide 12, moving it from the side of the first bending guide 11 towards the downstream bending guide 13 side, gradually moving it inward (inward in the device width direction) by an appropriate amount. Thus, in this embodiment, the two motors 25 and 41 constitute an adjustment mechanism for adjusting the tilt (lateral tilt state) of the front end restrictor 12a of the second bending guide 12 in the device width direction.

[0063] Furthermore, the guide position adjustment device is configured to include the aforementioned inlet-side guide moving mechanism 45, frame moving mechanism 46, and outlet-side guide moving mechanism 50, and the bending guide device is configured to include such a guide position adjustment device.

[0064] Here, for reference Figure 4 A~ Figure 4 D describes the exit-side guide moving mechanism 50.

[0065] Both the lower frame 5 and the second bending guide 12 extend along the cardboard travel direction, with the second bending guide 12 located on the outer side of the lower frame 5 (outer side in the width direction of the device). The outlet-side guide moving mechanism 50 is disposed at the downstream end of the second bending guide 12 within the space between the lower frame 5 and the second bending guide 12.

[0066] Furthermore, in this embodiment, the outlet-side guide moving mechanism 50 moves the front end restriction portion (outlet-side front end restriction portion) 12a of the second bending guide 12 in the device width direction by moving the downstream end of the second bending guide 12 relative to the lower frame 5.

[0067] The outlet-side guide moving mechanism 50 includes: a fluid pressure cylinder (second actuator) 51, which serves as a second actuator, is mounted on the lower frame 5 and extends and retracts along the cardboard travel direction; and a moving direction switching mechanism 52, which receives the movement of the piston rod 51a of the fluid pressure cylinder 51 in the cardboard travel direction to move the downstream end of the second bending guide 12 in the device width direction. In this embodiment, a cylinder is used for the fluid pressure cylinder 51.

[0068] The fluid pressure cylinder 51 is fixed by bolts (not shown) to a bracket 53a mounted on the outer side of the device width direction of the lower frame 5. The rear end (the end opposite the protruding end of the piston rod 51a of the fluid pressure cylinder 51) is supported by an auxiliary bracket 53b, also fixed to the bracket 53a by bolts (not shown). Furthermore, the pressure in the fluid pressure chamber (air pressure chamber) of the fluid pressure cylinder 51 is adjusted by a fluid pressure regulating valve (air pressure regulating valve) (not shown), causing the internal piston 51b to move, thereby adjusting the protruding stroke of the piston rod 51a.

[0069] The moving direction conversion mechanism 52 includes: a pin 54a, supported on an auxiliary bracket 53c fixed to the lower frame 5 via a bracket 53a, and arranged with its axis facing vertically; a swing member 55, supported on the pin 54a in a swingable manner and connected via a pin 54b to a bracket 59 mounted on the downstream end of the second bending guide 12; an abutment surface 55a, provided on the swing member 55, inclined in the width direction of the device relative to the cardboard traveling direction, and capable of abutting against the movable end of the piston rod 51a; and a coil spring (force application member) 56, which presses the abutment surface 55a against the movable end of the piston rod 51a. Additionally, in Figure 4 In A, a grid pattern is marked on the swinging component 55 for convenience.

[0070] Additionally, pin 54b is supported on bracket 59 with its axis oriented vertically, and bracket 59 is installed inside the device width direction of the second bending guide 12. Furthermore, coil spring 56 is supported on auxiliary bracket 53d, which fixes its base end to the lower frame 5, so that its front end abuts against the back surface 55b of the swing member 55, opposite to the abutment surface 55a, and is installed between the auxiliary bracket 53d and the back surface 55b of the swing member 55 in a compressed state.

[0071] Furthermore, in this embodiment, a roller 57, supported by an L-shaped auxiliary bracket 53e when viewed from above, is mounted on the movable end of the piston rod 51a. The movement of the movable end of the piston rod 51a is transmitted to the contact surface 55a via this roller 57. The auxiliary bracket 53e is a moving component that moves in conjunction with the movement of the fluid pressure cylinder 51 in the paperboard traveling direction. The front end of the auxiliary bracket 53e is divided vertically, and a shaft 57d is supported on the upper and lower front ends of the auxiliary bracket 53e with its axis pointing vertically. The roller 57 is supported on this shaft 57d. In addition, in this embodiment, the roller 57 is composed of three rollers 57a, 57b, and 57c arranged in a straight line in the vertical direction. The middle roller 57a in the vertical direction abuts against the contact surface 55a, and the upper and lower rollers 57b and 57c abut against the groove surface of the roller guide groove 58, which will be described later. The structure of the roller 57 is not limited to this.

[0072] In this embodiment, a roller guide groove 58 is formed by a recess in a portion of the outer surface of the device in the width direction, where the bracket 53a is provided. The roller guide groove 58 extends in the paperboard advancing direction, and the upper and lower rollers 57b and 57c of rollers 57a to 57c abut against the groove surface of the roller guide groove 58 and roll within the roller guide groove 58. The roller guide groove 58 displaces the position of roller 57 inward in the width direction of the device to cope with the narrowness of the space between the lower frame 5 and the second bending guide 12 in the width direction of the device, and reduces the load burden on roller 57 and piston rod 51a by abutting roller 57a against abutting surface 55a to support shaft 57d relative to the reaction force received from abutting surface 55a.

[0073] Then, as Figure 1 As shown in Figure A, a control panel 42 for a folding adhesive machine is provided on this guide position adjustment device to control the motor 41 that moves the lower frame 5, the motor 25 that moves the first bending guide 11, and the fluid pressure of the fluid pressure cylinder 51. A switch type 44 is connected to this control panel 42, which includes push-button switches indicating whether the drive motor 25 moves the first bending guide 11 in an opening or closing direction, or switches that adjust the protrusion stroke of the piston rod 51a by adjusting the fluid pressure of the fluid pressure cylinder 51. Furthermore, dimensional data from a production management device 43 that performs overall production management of the box-making machine is input into the control panel 42.

[0074] Since the folding adhesive machine according to one embodiment of the present invention is configured as described above, the control panel 42 for the folding adhesive machine is configured as follows: when the position information of the grid lines C1 and C2 of the corrugated cardboard 1 is obtained from the production management device 43, the motor 41 is rotated to move the lower frame 5, so that the front end limiting part 11a of the first bending guide 11 comes directly below the grid lines C1 and C2 (see reference). Figure 1 A).

[0075] In this state, the operator passes the cardboard through to confirm the folding status and determine if the position of the downstream bending guide 13 is appropriate. If expansion or contraction is required, the push-button switch 44 issues an instruction. For example, an instruction to contract the downstream bending guide 13 is issued. Then, the control panel 44 controls the motor 41 to contract the lower frame 5 and drives the motor 25 to expand the first bending guide 11 (i.e., the inlet-side front end restriction of the upstream bending guide 10). In this way, the position of the downstream bending guide 13 can be contracted without changing the position of the first bending guide 11. In the case of expansion, the exact opposite control is performed.

[0076] According to this folding adhesive machine, since the width direction position of the upstream bending guide 10 (first bending guide 11) remains unchanged even if the width direction position of the downstream bending guide 13 in the bending guide 6 is changed, the width direction position of the downstream bending guide 13 can be adjusted without affecting the width direction position of the upstream bending guide 10 (first bending guide 11). The width direction position of the downstream bending guide 13 is set according to the box depth (including the apparent box depth) of the corrugated cardboard box being manufactured, so that even corrugated cardboard boxes with a deep box depth can be manufactured accurately.

[0077] First, in this guide position adjustment device, when manufacturing corrugated cardboard boxes with a deep box depth (including apparent box depth), the guide position is adjusted by operating the frame moving mechanism 46, the exit-side guide moving mechanism 50, and the inlet-side guide moving mechanism 45.

[0078] That is, it is determined whether the travel direction length of the corrugated cardboard 1 (usually corresponding to the box depth) is above a predetermined value. If the travel direction length of the corrugated cardboard 1 is above the predetermined value, this method is implemented as described below. If the travel direction length is less than the predetermined value, the width direction position of each bending guide 11, 12, 13 is operated.

[0079] Furthermore, the specified values ​​related to the travel direction length of the corrugated cardboard 1 can be preset through experiments, for example. The adjustment results of the travel direction length of the corrugated cardboard 1 and the guide position can be recorded, and inherent specified values ​​can be set for each order or each box-making machine. Alternatively, when the operator confirms the bending of the corrugated cardboard 1 and determines that the guide position needs adjustment, the travel direction length of the corrugated cardboard 1 at that time can be set to the specified value.

[0080] First, from Figure 5 As shown in Figure A, the normal state (the state of manufacturing corrugated cardboard with a shallow box depth) causes the motor (first actuator) 41 to operate as follows: Figure 5 As shown in Figure B, the lower frame 5 is moved parallel to the inward side in the width direction of the device. After the movement of the lower frame 5 (the movement of the downstream bending guide 13 in the width direction of the device) ends, or simultaneously with the movement of the lower frame 5 (the movement of the downstream bending guide 13 in the width direction of the device), the motor (third actuator) 25 is activated, causing the first bending guide 11 to move parallel to the outward side in the width direction of the device in a manner that counteracts the movement of the lower frame 5. Next, the fluid pressure cylinder (second actuator) 51 is activated, as shown in Figure B. Figure 5 As shown in Figure C, the downstream end of the second bending guide 12 in the cardboard travel direction is moved outward in the device width direction.

[0081] exist Figure 5 A~ Figure 5 In diagram C, the device width direction position of the front end restricting portion 11a of the first bending guide 11 is represented by a dashed line L1, and the device width direction position of the downstream end of the front end restricting portion 12a of the second bending guide 12 is represented by dashed lines L2 and L3. By moving the lower frame 5 inward in the device width direction and moving the first bending guide 11 parallel to the outside in the device width direction, the device width direction position of the front end restricting portion 11a of the first bending guide 11 remains unchanged at L1, but the device width direction position of the downstream end of the front end restricting portion 12a of the second bending guide 12 changes inward in the device width direction from L2 to L3. Conversely, by moving the downstream end of the second bending guide 12 in the cardboard travel direction outward in the device width direction, the device width direction position of the downstream end of the front end restricting portion 12a of the second bending guide 12 returns from L3 to L2.

[0082] Additionally, an interlock is provided on the fluid pressure cylinder (second actuator) 51 to prevent collision with the measuring roller 60 when the second bending guide 12 moves outward in the width direction of the device. At this time, if the movement of the lower frame 5 has not ended, the fluid pressure cylinder (second actuator) 51 will not operate. Alternatively, the fluid pressure cylinder (second actuator) 51 will not operate as long as the lower frame 5 does not move to a position where it will not collide with the measuring roller 60 even if the second bending guide 12 moves.

[0083] The upstream side bending guide 10, which is composed of a single piece without being divided, is in... Figure 5 A~ Figure 5 In C, a double-dotted line is used to represent (for example, ...). Figure 5 As shown in Figure B, after the movement of the lower frame 5 (the movement of the downstream bending guide 13 inward in the width direction of the device) is completed, as follows: Figure 5 As shown in Figure C, the motor 25 and the fluid pressure cylinder 51 are activated to move the upstream bending guide 10 parallel to the outside in the width direction of the device in a manner that counteracts the movement of the lower frame 5. Alternatively, even before the movement of the lower frame 5 ends, if the downstream bending guide 13 moves to a position where the upstream bending guide 10 does not collide with the measuring roller 60, the motor 25 and the fluid pressure cylinder 51 are activated to move the upstream bending guide 10 parallel to the outside in the width direction of the device.

[0084] The corrugated cardboard 1 is bent with its front end (the downstream end in the cardboard conveying direction) as a reference. Figure 5 In the normal state shown in Figure A, when manufacturing a typical corrugated cardboard box with a shallow depth, the rear end of the corrugated cardboard 1 (upstream end in the cardboard conveying direction) is located as follows: Figure 6When at position A, the rear end of corrugated cardboard 1 is as shown. Figure 6 The corrugated cardboard 1 is bent as shown in Figure B. When the depth of the manufactured box is not deep (the travel length of the corrugated cardboard 1 is less than the specified value), the front end of the corrugated cardboard 1 does not separate significantly from the rear end. Therefore, the bending of the front end of the corrugated cardboard 1 is not large, and the rear end of the bent corrugated cardboard 1 will not interfere with the first guide plate 13A.

[0085] On the other hand, Figure 5 In the normal state shown in Figure A, when manufacturing corrugated cardboard boxes with a deep box depth, the rear end of the corrugated cardboard 1 is located as follows: Figure 6 At position C, the rear end of corrugated cardboard 1 is as shown. Figure 6 The corrugated cardboard 1 is bent as shown in D. When the manufactured box is deep (the length of the corrugated cardboard 1 in the travel direction is greater than the specified value), the front end of the corrugated cardboard 1 is significantly separated from the rear end. Therefore, the front end of the corrugated cardboard 1 is bent, and the rear end of the bent corrugated cardboard 1 interferes with the first guide plate 13A.

[0086] Therefore, in the case of manufacturing deep corrugated cardboard boxes, if... Figure 5 As shown in Figure B, the lower frame 5 is moved parallel to the inside of the device width direction, so that the rear end of the corrugated cardboard 1 is located as shown in Figure B. Figure 7 At position C, even if the front bend of corrugated cardboard 1 is large, it can still be as shown. Figure 7 As shown in Figure D, interference between the rear end of the corrugated cardboard 1 and the first guide plate 13A is avoided. This prevents the rear end of the corrugated cardboard 1 from gripping the upstream half of the first guide plate 13A.

[0087] Furthermore, even if the depth of the manufactured box is not deep, the rear end of the corrugated cardboard 1 (the upstream end in the cardboard conveying direction) is located... Figure 7 At position A, the rear end of corrugated cardboard 1 is also as shown. Figure 7 As shown in Figure B, the bending occurs without interfering with the first guide plate 13A. Therefore, in this bending guide device, if the manufactured box depth is not deep, the lower frame 5 does not move parallel to the inside in the width direction of the device.

[0088] However, since the lower frame 5 is moved in parallel to the inside of the device width direction, causing the downstream bending guide 13, including the first guide plate 13A, to move in parallel to the inside of the device width direction, the first bending guide 11 and the second bending guide 12 supported on the lower frame also move in parallel to the inside of the device width direction.

[0089] The corrugated cardboard 1 is gradually folded along the grid lines as it passes through the second bending guide 12. The exit of the second bending guide 12 is also an important part in determining the bending position. If the exit of the second bending guide 12 moves inward in the width direction of the device, it will become a cause of instability in the folding accuracy.

[0090] Furthermore, the position of the first bending guide 11 also affects the tilting (lateral tilting state) of the front end limiting part 12a of the second bending guide 12 in the width direction of the device.

[0091] Therefore, as Figure 5 As shown in Figure C, the downstream end of the second bending guide 12 in the cardboard travel direction is moved outward in the device width direction, and the motor (third actuator) 25 is activated to move the first bending guide 11 parallel to the outside in the device width direction. Thus, as... Figure 5 A, Figure 5 B. Figure 5 As shown in Figure C, by moving the front end restriction portion (exit-side front end restriction portion) 12a of the second bending guide 12 within a range inward from the device width direction position of the front end restriction portion (inlet-side front end restriction portion) 11a of the first bending guide 11, the tilt (lateral tilt state) of the front end restriction portion 12a of the second bending guide 12 in the device width direction can be maintained. Furthermore, the effect of the parallel movement of the lower frame 5 inward in the device width direction can be counteracted, eliminating the cause of instability in folding accuracy and thus stabilizing folding accuracy.

[0092] Furthermore, the outlet-side guide moving mechanism 50, which moves the second bending guide 12 in the width direction of the device, is configured to include: a fluid pressure cylinder (second actuator) 51, which is mounted on the lower frame 5 and extends and retracts along the paperboard travel direction; and a moving direction conversion mechanism 52, which accepts the movement of the piston rod 51a of the fluid pressure cylinder 51 in the paperboard travel direction so that the downstream end of the second bending guide 12 moves in the width direction of the device. Therefore, the outlet-side guide moving mechanism 50 can be configured using the limited space between the support frame and the second guide member.

[0093] Since the moving direction conversion mechanism 52 is configured to include: a swing member 55, which is supported on the lower frame 5 in a swingable manner via a pin 54a; an abutment surface 55a, which is provided on the swing member 55, is inclined in the width direction of the device relative to the cardboard traveling direction, and can abut against the movable end of the piston rod 51a; and a coil spring 56, which presses the abutment surface 55a against the movable end of the piston rod 51a, the force of the fluid pressure cylinder 51 can be amplified by the abutment surface 55a and transmitted to the downstream end of the second bending guide 12, and the downstream end of the second bending guide 12 can be moved in the width direction of the device using the fluid pressure cylinder 51 with a small output.

[0094] Furthermore, since a roller 57 is fitted at the movable end of the piston rod 51a, which rotates freely while abutting against the contact surface 55a during movement and can transmit the force in the direction of paperboard travel to the swinging member, the loss of force transmitted from the movable end of the piston rod 51a to the second bending guide 12 through the contact surface 55a can be reduced, the operation of the outlet side guide moving mechanism 50 can be made smooth, and the burden on the fluid pressure cylinder 51 can also be reduced.

[0095] The embodiments of the present invention have been described above. However, the present invention is not limited to these embodiments, and various modifications can be made without departing from the spirit of the present invention.

[0096] For example, in the above embodiment, the outlet-side guide moving mechanism 50 is disposed in the space between the lower frame 5 and the second bending guide 12, but the placement of the outlet-side guide moving mechanism is not limited to the space between the lower frame 5 and the second bending guide 12.

[0097] However, by configuring the outlet-side guide moving mechanism 50 within the space between the lower frame 5 and the second bending guide 12, the enlargement of the device can be prevented.

[0098] Furthermore, a fluid pressure cylinder 51 that extends and retracts along the direction of cardboard travel is used as the actuator of the outlet side guide moving mechanism 50, and the outlet side guide moving mechanism 50 is accommodated in the limited space between the lower frame 5 and the second bending guide 12. However, as long as there are no obstructions in the space between the lower frame 5 and the second bending guide 12, various types of outlet side guide moving mechanisms can be applied.

[0099] For example, in Figure 4 D shows that Figure 4 Examples of variations of the portion within the frame indicated by a single-dot dashed line in A, such as... Figure 4 As shown in Figure D, a motor 81 can be used instead of the fluid pressure cylinder 51. When using the motor 81, a conversion mechanism is needed to convert the rotary motion into linear motion. For example, this conversion mechanism can be implemented using a servo motor as the motor 81, with an external thread on the rotating shaft 81a of the motor 81 and an internal thread on the auxiliary bracket 53e that engages with the external thread of the rotating shaft 81a. In this case, a ball screw mechanism with balls installed between the external and internal threads is preferred.

[0100] According to this structure, by rotating the motor 81 instead of extending and retracting the fluid pressure cylinder 51, the auxiliary bracket 53e can be configured as a moving part that moves in the direction of cardboard travel in conjunction with the action of the motor 81, and the same effect as when using the fluid pressure cylinder 51 can be obtained.

[0101] Furthermore, when a servo motor is used as motor 81, stepless adjustment with high precision is possible, making it easy to set the device width direction position of the upstream bending guide 10 (second bending guide 12) to the most appropriate position.

[0102] In addition, various mechanisms have been developed as conversion mechanisms for converting rotary motion into linear motion, and appropriate selection and use are sufficient.

[0103] Moreover, in Figure 8 A~ Figure 8 D shows another variation of the exit-side guide moving mechanism. Figure 8 A shows the outlet-side guide moving mechanism 50A of the first modified example, in which... Figure 8 B shows the outlet-side guide moving mechanism 50B of the second modification example. Figure 8 C shows the outlet-side guide moving mechanism 50C of the third modification, in which... Figure 8 D shows the exit-side guide moving mechanism 50D of the fourth variation.

[0104] like Figure 8 As shown in Figure A, in the first modification, the outlet-side guide moving mechanism 50A has a cylinder (fluid pressure cylinder) 51A mounted on the lower frame 5 in a telescoping manner along the cardboard travel direction of the lower frame 5 and the second bending guide 12. An L-shaped connecting rod 71 is installed between the front end of the piston rod of the cylinder 51A and the bracket 59a mounted on the second bending guide 12. The middle part (bent part) of this L-shaped connecting rod 71 is mounted on a support shaft (fixed to the lower frame 5) facing the vertical direction, and one end is rotatably pinned to the front end of the piston rod and the other end is rotatably pinned to the bracket 59a. Thus, when the cylinder 51A telescops in the cardboard travel direction, the second bending guide 12 moves in the width direction of the device via the bracket 59a.

[0105] like Figure 8 As shown in Figure B, in the second modification, the outlet-side guide moving mechanism 50B has a cylinder (fluid pressure cylinder) 51B mounted on the lower frame 5 in a telescoping manner along the cardboard travel direction of the lower frame 5 and the second bending guide 12. A connecting rod 72 is installed between the front end of the piston rod of the cylinder 51B and the bracket 59b mounted on the second bending guide 12. One end of the connecting rod 72 is integrally connected to the front end of the piston rod, and the other end is integrally connected to a rotating shaft 74 mounted at an eccentric position on the rotating component 73 mounted on the bracket 59b. Thus, if the cylinder 51B telescops in the cardboard travel direction, the rotating shaft 74 rotates together with the swing of the connecting rod 72, and the bracket 59b and the second bending guide 12 move together with the rotating component 73 in the width direction of the device.

[0106] like Figure 8 As shown in Figure C, in the third modification, the outlet-side guide moving mechanism 50C mounts a cylinder (fluid pressure cylinder) 51C on the lower frame 5 in a telescopic manner in the width direction of the device. A linkage member 75A is connected to the front end of the piston rod of the cylinder 51C. The linkage member 75A has one end connected to the front end of the piston rod supported via a guide 76 in a manner capable of moving in the width direction of the device, and the other end connected to a bracket 59c mounted on the second bending guide 12. Therefore, if the cylinder 51C telescopically extends or retracts in the width direction of the device, the linkage member 75A is guided by the guide 76 to move in the width direction of the device, and the bracket 59c and the second bending guide 12 also move in the width direction of the device.

[0107] like Figure 8 As shown in Figure D, in the fourth modification, the outlet-side guide moving mechanism 50D mounts a pair of cylinders (fluid pressure cylinders) 51C on the lower frame 5 in a telescopic manner in the width direction of the device. Linkage members 75B are connected to the front ends of the piston rods of the two cylinders 51C respectively. The linkage members 75B have their two ends connected to the front ends of the piston rods, are supported by guides 76 in a manner that allows them to move in the width direction of the device, and their middle portion is connected to a bracket 59d mounted on the second bending guide 12. Thus, if the cylinders 51C telescopically extend or retract in the width direction of the device, the linkage members 75B are guided by the guides 76 to move in the width direction of the device, and the bracket 59d and the second bending guide 12 also move in the width direction of the device. The linkage members 75B are guided by the guides 76 at both ends and driven by the cylinders 51C, causing the bracket 59d in the middle portion to move in the width direction of the device, thus enabling effortless and stable movement of the second bending guide 12 in the width direction of the device.

[0108] Furthermore, in Figure 8 C Figure 8 Section D describes an example using cylinders (fluid pressure cylinders) 51C and 51D as the second actuator. However, in these variations, a motor 81 may be used instead of the fluid pressure cylinders 51C and 51D as the second actuator.

[0109] For example, regarding Figure 8 C Figure 8 Variations of D, such as... Figure 8 As shown in E, a motor 81 and a conversion mechanism that converts rotary motion into linear motion can be used to replace the fluid pressure cylinders 51C and 51D. Furthermore, Figure 8 E is only shown in Figure 8 C Figure 8The part enclosed by a single-dot dashed line in D can be configured by a conversion mechanism, such as a ball screw mechanism. In the ball screw mechanism, a servo motor is used as the motor 81, and an external thread is provided on the motor rotation shaft 81a, and an internal thread is provided on the linkage member 75 that moves in the width direction of the device and engages with the external thread of the rotation shaft 81a.

[0110] Thus, even when motor 81 is used to replace fluid pressure cylinders 51A to 51D, it is possible to obtain the same performance as... Figure 8 C Figure 8 The same effect is achieved as shown in the modified example D. Moreover, similarly, when a servo motor is used as motor 81, stepless adjustment with high precision is possible, thus making it easy to set the device width direction position of the upstream bending guide 10 (second bending guide 12) to the most appropriate position.

[0111] Furthermore, in the above embodiment, the upstream bending guide 10 is configured to be divided into a first bending guide 11 and a second bending guide 12, or to be a single, undivided member, but is not limited to this. For example, the upstream bending guide 10 may be configured to be divided into three or more members. In this case, by configuring the upstream bending guide 10, which is divided into three or more members, such that the front end restricting portion closest to the exit side moves in the device width direction within a range inward from the device width direction position of the front end restricting portion closest to the inlet side, the same effect as in the above embodiment can be obtained.

[0112] Postscript

[0113] The following notes are further disclosed regarding the above-described embodiments.

[0114] (Postscript 1)

[0115] A guide position adjustment device is characterized in that it is mounted in pairs on a folding gluing machine that folds corrugated cardboard into a box while moving the cardboard in the cardboard travel direction, and includes an upstream guide member and a downstream guide member arranged sequentially from the upstream side of the cardboard travel direction. It is also mounted on a bending guide device having a frame moving mechanism that moves a support frame supporting the upstream and downstream guide members parallel to the device width direction perpendicular to the cardboard travel direction by a first actuator.

[0116] The upstream guide component includes:

[0117] At least the inlet-side front end restriction and the outlet-side front end restriction of the upstream guide member in the front end restriction portion that contacts the bent portion of the corrugated cardboard; and

[0118] The exit-side guide moving mechanism is caused by a second actuator to move the exit-side front end restricting part relative to the support frame in the device width direction within a range from the device width direction position of the inlet-side front end restricting part.

[0119] (Postscript 2)

[0120] The guide position adjustment device according to Appendix 1 is characterized in that...

[0121] Both the support frame and the upstream guide component extend along the travel direction of the cardboard.

[0122] The exit-side guide moving mechanism is disposed in the space extending along the cardboard travel direction between the support frame and the upstream-side guide component.

[0123] (Note 3)

[0124] The guide position adjustment device according to Appendix 1 or 2 is characterized in that...

[0125] The outlet-side guide moving mechanism includes:

[0126] A fluid pressure cylinder, which is the second actuator, is mounted on the support frame and extends and retracts along the direction of travel of the cardboard; and

[0127] The movement direction conversion mechanism converts the movement of the piston rod of the fluid pressure cylinder in the direction of the cardboard travel into a movement direction that causes the downstream end of the upstream guide member to move in the direction of the device width.

[0128] (Postscript 4)

[0129] The guide position adjustment device according to Appendix 1 or 2 is characterized in that...

[0130] The outlet-side guide moving mechanism includes:

[0131] A motor, which is the second actuator, and is mounted on the support frame; and

[0132] The movement direction conversion mechanism converts the rotation of the motor's rotating shaft into a movement direction that causes the downstream end of the upstream guide member to move in the width direction of the device.

[0133] When using a servo motor as the motor, stepless adjustment is preferred.

[0134] (Note 5)

[0135] The guide position adjustment device according to Appendix 3 or 4 is characterized in that...

[0136] The moving direction conversion mechanism includes:

[0137] A swinging component is supported on the support frame in a swingable manner and connected to the downstream end of the upstream guide component;

[0138] A contact surface, disposed on the swinging member, is inclined in the width direction of the device relative to the direction of paperboard travel, and is capable of abutting against the movable end of a moving member that moves in conjunction with the action of the second actuator in the direction of paperboard travel; and

[0139] The force-applying component presses the contact surface against the movable end.

[0140] (Note 6)

[0141] The guide position adjustment device according to Appendix 5 is characterized in that...

[0142] A roller is fitted on the moving end, capable of transmitting force only in a direction perpendicular to the contact surface to the oscillating component.

[0143] (Note 7)

[0144] The guide position adjustment device according to any one of Appendices 1 to 6 is characterized in that...

[0145] The upstream guide component is configured to have a first guide component and a second guide component sequentially from the upstream side.

[0146] (Postscript 8)

[0147] The guide position adjustment device according to any one of Appendices 1 to 7 is characterized in that it includes an inlet-side guide moving mechanism that moves the inlet-side front end limiting portion of the upstream guide member in the width direction of the device by a third actuator.

[0148] (Note 9)

[0149] A bending guide device is characterized in that it is mounted in pairs on a folding gluing machine that folds corrugated cardboard into boxes while driving it, and has an upstream guide component and a downstream guide component arranged sequentially from the upstream side. The folding gluing machine has a guide component position adjustment device as described in any one of Appendix 1 to Appendix 8.

[0150] (Postscript 10)

[0151] The bending guide device according to Appendix 9 is characterized in that...

[0152] The upstream end of the second guide member in the direction of cardboard travel is connected to the downstream end of the first guide member via a linkage.

[0153] (Postscript 11)

[0154] The bending guide device according to Appendix 8 or 9 is characterized in that...

[0155] The front end limiting portion of the second guide member, which is mounted on the first guide member and the second guide member and contacts the bent portion of the corrugated cardboard, is configured to be laterally inclined in a manner that gradually approaches the inner side of the device width direction downstream.

[0156] (Postscript 12)

[0157] The bending guide device according to any one of Appendices 9 to 11 is characterized in that,

[0158] The downstream guiding component includes a first guide plate and a second guide plate sequentially from the upstream side.

[0159] The downstream side portion of the front end restriction portion of the second guide plate in the front end restriction portion that contacts the bent portion of the corrugated cardboard is configured to be laterally inclined in a manner that gradually approaches the inner side of the device width direction downstream.

[0160] (Postscript 13)

[0161] A folding adhesive machine, characterized in that it comprises a bending guide device as described in any one of Appendices 9 to 12.

[0162] (Postscript 14)

[0163] A box-making machine, characterized in that it comprises the folding and gluing machine described in Appendix 13.

[0164] (Postscript 15)

[0165] A method for adjusting the position of a bending guide, characterized in that it uses the guide position adjustment device described in Appendix 8 to adjust the position of the upstream guide component and the downstream guide component in the width direction of the device, wherein...

[0166] When the travel length of the corrugated cardboard is greater than or equal to a predetermined value, and when the travel length is less than the predetermined value, the first actuator is activated to move the support frame inward in the width direction of the device, and the third actuator is activated to move at least the inlet-side front end restricting portion of the upstream guide member outward in the width direction of the device. Then, the second actuator is activated to move the outlet-side front end restricting portion outward in the width direction of the device within a range inward from the device width direction position of the inlet-side front end restricting portion.

[0167] Symbol Explanation

[0168] 1-Corrugated cardboard, 1A-Corrugated cardboard box, 2-Upper frame, 3-Pulley, 4-Conveyor belt, 5-Lower frame (support frame), 6-Bending guide (folding ruler), 7-Folding rod, 8-Folding belt, 10-Upstream side bending guide (upstream side guide component), 11-First bending guide (first guide component) of upstream side bending guide 10, 11a-Front end restriction of the first bending guide (first guide component) (entry side front end restriction), 12-Upstream side bending guide 10 12a - the front end restriction portion (outlet side front end restriction portion) of the second bending guide (second guiding component), 13 - the downstream bending guide (downstream side guiding component), 13a - the front end restriction portion of the downstream bending guide 13, 13A - the first guide plate of the downstream bending guide 13, 13Aa - the front end restriction portion of the first guide plate 13A, 13B - the second guide plate of the downstream bending guide 13, 13Ba - the front end restriction portion of the second guide plate 13B 20-Pin, 21-Sliding arm, 22-Bearing, 23-Shaft, 24-Eccentric wheel, 25-Motor (3rd actuator), 30, 31-Pin, 40-Threaded shaft, 41-Motor (1st actuator), 42-Control panel for folding adhesive machine, 43-Production management device, 44-Switch, 45-Inlet side guide moving mechanism, 46-Frame moving mechanism, 50-Outlet side guide moving mechanism, 51-Fluid pressure cylinder (2nd actuator), 51a-Piston rod, 51b-Live 52 - Moving direction conversion mechanism; 53a, 59 - Bracket; 53b, 53c, 53d - Auxiliary bracket; 53e - Auxiliary bracket as a moving part that moves in the direction of paperboard travel; 54a, 54b - Pin; 55 - Swinging part; 55a - Abutting surface of swinging part 55; 56 - Helical spring (force-applying part); 55b - Back side of swinging part 55; 57 - Roller; 57d - Shaft; 58 - Roller guide groove; 60 - Measuring roller; C, C1, C2 - Grid lines; S - Slot.

Claims

1. A guide position adjustment device characterized by comprising: A folding and gluing machine in which right and left pairs of the machine are arranged on one side to run corrugated paper in a paper running direction and to fold the paper into a box, and which is provided with an upstream side guide member and a downstream side guide member arranged in this order from the upstream side in the paper running direction, and is arranged on a bending guide device provided with a frame moving mechanism that moves a support frame supporting the upstream side guide member and the downstream side guide member in a device width direction that is parallel to a direction at right angles to the paper running direction, wherein The upstream side guide member is provided with: at least an entry side front end limit portion and an exit side front end limit portion of the upstream side guide member in a front end limit portion that contacts a bending portion of the corrugated paper; an entry side guide member moving mechanism that moves the entry side front end limit portion of the upstream side guide member in the device width direction by a third actuator; and an exit side guide member moving mechanism that moves a downstream side end portion of the exit side front end limit portion in the device width direction with respect to the support frame in a range that is inside from a device width direction position of the entry side front end limit portion by a second actuator.

2. The guide position adjusting device according to claim 1, wherein the support frame and the upstream side guide member both extend in the paper running direction, the exit side guide member moving mechanism is arranged in a space that extends in the paper running direction between the support frame and the upstream side guide member.

3. The guide position adjusting device according to claim 1 or 2, wherein the exit side guide member moving mechanism is provided with: a fluid pressure cylinder that is the second actuator and is installed on the support frame and extends in the paper running direction; and a moving direction conversion mechanism that converts movement of a piston rod of the fluid pressure cylinder in the paper running direction to a moving direction that moves the downstream side end portion of the upstream side guide member in the device width direction.

4. The guide position adjusting device according to claim 1 or 2, wherein the exit side guide member moving mechanism is provided with: a motor that is the second actuator and is installed on the support frame; and a moving direction conversion mechanism that converts rotation of a rotation shaft of the motor to a moving direction that moves the downstream side end portion of the upstream side guide member in the device width direction.

5. The guide position adjusting device according to claim 3, wherein the moving direction conversion mechanism is provided with: a swing member that is supported on the support frame in a swingable manner and is linked to the downstream side end portion of the upstream side guide member; an abutting surface that is provided on the swing member, is inclined to the device width direction with respect to the paper running direction, and is capable of abutting against a movable end portion of a movable member that moves in the paper running direction in conjunction with operation of the second actuator; and a biasing member that presses the abutting surface against the movable end portion.

6. The guide position adjusting device according to claim 4, wherein the moving direction conversion mechanism is provided with: ​ a swing member supported in a swingable manner to the support frame and linked to the downstream end portion of the upstream-side guide member; an abutting surface provided to the swing member, inclined to the apparatus width direction with respect to the paperboard travel direction, and capable of abutting against a movable end portion of a moving member movable in the paperboard travel direction in conjunction with the operation of the second actuator; and a biasing member biasing the abutting surface against the movable end portion. The folding and gluing machine is provided with the guide position adjustment device according to any one of claims 1 to 6.

7. A folding gluer, characterized by, The folding and gluing machine is provided with the guide position adjustment device according to any one of claims 1 to 6.

8. A box making machine characterized by, The folding and gluing machine is provided with the guide position adjustment device according to any one of claims 1 to 6.

9. A method of adjusting the position of a bending guide, characterized by, In the case where the travel direction length of the corrugated paperboard is equal to or greater than a predetermined prescribed value, the first actuator is operated to move the support frame in the apparatus width direction to the inside, and the third actuator is operated to move at least the inlet-side front end limit portion of the upstream-side guide member to the outside in the apparatus width direction, and then the second actuator is operated to move the outlet-side front end limit portion to the outside in the apparatus width direction within a range from the apparatus width direction position of the inlet-side front end limit portion to the inside. ​

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