JPH0339230Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an improvement of a sheet guide device in a corrugated sheet box making machine.

(Prior Art) A sheet guide device in a conventional corrugated sheet box making machine will be explained with reference to FIGS.
is the printing section, 4 is the paper discharge section, 5 is the feeder, 6 is the table, 7 and 8 are the feed rolls, 9 and 15 are the printing cylinders, 10 is the roll, 11, 12, 13, and 14 are the feed rolls, and 16 is the receiver. Roll, 17, 18, 19,
20 is a feed roll, 21, 22, 23, 24 are ruled line rolls, 25 is a slitter roll, 26 is a receiving roll, 27 is a sheet guide, and the corrugated cardboard sheet 1 is transferred to the paper feed section 2, the printing section 3, 3', and the paper discharge section 4. Predetermined processing is performed while passing through. That is, the corrugated sheets 1 shown in FIG. 7 are sent from the previous process onto the table 6 of the paper feed section 2, and are stacked. It is thrown into the 8 room. The corrugated cardboard sheet 1 sent out to the left by the sending rolls 7 and 8 is guided by the sheet guide 27 and sent between the printing cylinder 9 and the receiving roll 10 of the printing section 3, as shown in FIG. The printing a is applied on the corrugated cardboard sheet 1', and then the feed roll 1
1, 12 and 13, 14 between the printing cylinder 15 and receiving roll 16 of the printing section 3', printing a' is applied on the corrugated cardboard sheet 1'' as shown in FIG. After passing through the rolls 17, 18 and 19, 20, the ruled line roll 21 of the paper discharge section 4,
22, 23, and 24, and further between the slitter roll 25 and the receiving roll 26, as shown in FIG.
A ruled line k and a slit S are placed on the top.

11 and 12 specifically show the structure of the sheet guide 27 provided in the printing section 3 shown in FIG. 6. FIG. In addition, the sheet guide 2 of the printing section 3'
7 has the same structure. In FIG. 11 and FIG. 12, 28 and 28 are support members, and the support member 2
8, 28 have two bolt holes 28a, 2 above and below.
8a is provided, and one end of the supporting members 28, 28 is fixed to the inner surface of the unit frames 3a, 3b. Further, 27a and 27a are guide plates, and the legs 27b and 27b of the guide plates 27a and 27a are
One long hole 27c, 27c is provided in the vertical direction, and is fixed to supporting members 28, 28 by two bolts 29, 29 so as to be held at an appropriate height position. Further, the height position of the guide plate 27a can be adjusted by loosening the bolt 29 and adjusting the height position of the guide plate 27a.
This is done manually by moving the bolts vertically along the elongated holes 27c, 27c and tightening the bolts 29.

(Problems to be solved by the invention) FIG. 13 shows the feed rolls 11, 12 and 13,
14, the corrugated cardboard sheet 1 of thickness t is guided to the upper surface of the guide plate 27a and fed in the direction of the arrow. , feed roll 11,
The approach angle θ to 12 or 13, 14 is the feeding surface C ₁₁ of the feeding roll 11, 12 or 13, 14.
-C ₁₂ or C ₁₃ -C ₁₄ , and there is a level difference h=(t-g)/2 between the upper surfaces of the lower feed rolls 12 and 14 and the upper surface of the guide plate 27a. Indicates the condition.

Further, FIG. 14 shows feed rolls 11, 12 and 1.
3, 14 and the guide plate 27a, the corrugated cardboard sheet 1
or 1'. There are several types of corrugated cardboard sheets 1 having different thicknesses t. In the figure, feed rolls 12 and 14 are indicated by solid lines.
The position corresponds to the corrugated sheet 1 with the maximum thickness t (t max ), and in accordance with this, each guide plate 27a is set at a position lower than the upper surface of the feed rolls 12 and 14 by an amount h. This indicates the state in which the Now, if you have finished processing the corrugated sheet 1 in this state and then want to process it through the corrugated sheet 1' with a thinner thickness t', move the feed rolls 12 and 14 upward (t max - t'). It is necessary to raise it to the position indicated by the chain line. At this time, the position of each guide plate 27a is also (t max - t')
However, this requires a working space, and for this purpose, opening and closing operations must be performed in the printing sections 3, 3' and the paper ejection section 4 shown in FIG. Including this requires a considerable amount of work time and results in lost time in production, so the level readjustment of the guide plate 27a is not performed during normal operation, but if the level readjustment of the guide plate 27a is omitted, Level difference between the guide plate 27a and the feed rolls 12' and 14' at the chain line position
h′ becomes h′>h. In this state, when a corrugated cardboard sheet 1' with a warp of thickness t' enters, the state shown by the chain line in FIG. 14 occurs. That is, the leading edge of the corrugated sheet 1' collides with point b of the feed roll 14', and the approach angle is no longer perpendicular to the feed plane _C13 - _C'14 , causing the feeding speed of the corrugated sheet 1' and the feed roll 14 to change. ′ will no longer match the circumferential speed. This phenomenon occurs when the corrugated cardboard sheet 1'
It also occurs when entering 12' and all other feeding rolls and receiving rolls,
The timing of feeding the corrugated cardboard sheets for printing and lining is inconsistent, reducing processing accuracy.
There was a problem with defective products being produced.

Another conventional example of a sheet guide device for a corrugated board sheet making machine is one described in Japanese Utility Model Application No. 58-76728. This sheet guide device includes a pair of upper and lower transport rolls 33, 33' arranged on the upstream side in the transport direction, a pair of upper and lower transport rolls 34, 34' arranged on the downstream side in the transport direction, and a pair of upper and lower transport rolls 34, 34' arranged on the downstream side in the transport direction. It has a guide plate 36 that guides the corrugated cardboard sheet exiting between the upper and lower conveyance rolls 33 and 33' to between the upper and lower conveyance rolls on the downstream side.
3' and the downstream upper roll 34' are rotatably attached to the left and right frames 31, and the left and right ends of the upstream lower roll 33 and the downstream lower roll 34 are attached to the bearing 53 and bearing pressers 51, 52. The eccentric bearing boxes 49, 50 are rotatably mounted on the left and right frames 31, and the upper roll 33 on the upstream side and the lower roll 33 on the downstream side are rotatably mounted on the left and right frames 31. The left and right guide plate support brackets 37 that hold the left and right ends of the roll 34 from above are attached to each of the eccentric bearing boxes 4.
9 and 50, the left and right guide plate support brackets 37 are connected by the guide plate 36, and both left and right ends of the upstream lower roll 33 and the downstream lower roll 34 are held from below. Attach the left and right brackets 38 and 39 to the left and right bearing holders 51 and 52,
A shaft 48 is rotatably attached to the left and right frames 31, and gears 47, 47 attached to both left and right ends of the shaft mesh with gears provided on the outer periphery of the downstream eccentric bearing boxes 49, 50. A pinion 46 with a handle that drives a gear 47 at one end is attached to one of the left and right frames, and a gear 55 is installed between the gear provided on the outer periphery of the downstream eccentric bearings 49 and 50 and the upstream eccentric bearings 49 and 50. are interposed between the bearing holders 51 and 52 and the guide plate support bracket 37 attached to each eccentric bearing 49 and 50.
If there is a manufacturing error because there is only a small gap between the
There was a problem that the movement of 9,50 was getting worse.

The present invention addresses the above-mentioned problems, and includes a pair of upper and lower conveyor rolls disposed on the upstream side in the conveyance direction, a pair of upper and lower conveyor rolls disposed on the downstream side in the conveyance direction, and a pair of upper and lower conveyance rolls disposed on the downstream side in the conveyance direction. It has a guide plate that guides the corrugated cardboard sheet exiting between the rolls to between the upper and lower transport rolls on the downstream side, and the left and right ends of the upstream upper roll and the downstream upper roll of each roll are attached to the left and right frames. The upstream lower roll and the downstream lower roll are rotatably supported at both left and right ends by an eccentric bearing box having a bearing and a bearing retainer, and each eccentric bearing box is connected to the left and right frames by an eccentric axis. Attach the left and right guide plate support brackets, which support the left and right ends of the upstream lower roll and downstream lower roll from above, to the bearing holders of each eccentric bearing box, and A sheet in a corrugated sheet making machine in which the guide plate support brackets of the above are connected by the guide plate, and the left and right brackets that hold the left and right ends of the upstream lower roll and the downstream lower roll from below are attached to the left and right bearing holders. In the guide device, an upstream shaft and a downstream shaft are rotatably attached to left and right frames, and gears attached to both left and right ends of each shaft are engaged with gears provided on an outer periphery of each eccentric bearing box, A pinion with a handle that drives the gear at one end of each shaft is attached to one of the left and right frames, and a long hole shaped in the conveying direction is provided between the guide plate support bracket of the downstream lower roll and the bracket attached thereto. The present invention relates to a sheet guide device for a corrugated paperboard sheet making machine, which is characterized by forming a holding part for a bearing presser, and the purpose thereof is to improve the processing accuracy of corrugated paperboard sheets. Another object of the present invention is to provide a sheet guide device for corrugated cardboard sheets that can eliminate poor movement of upstream and downstream eccentric bearings that occurs when there are manufacturing errors.

(Means for Solving the Problems) The present invention is designed to transfer the corrugated cardboard sheet that has passed between the pair of upper and lower conveying rolls disposed on the upstream side in the conveying direction to the downstream side in the conveying direction after passing through the upper surface of the guide plate. In a sheet guide device in a corrugated sheet box making machine that guides the paper between a pair of upper and lower conveying rolls,
Of the rolls for vertical conveyance, the upper roll is rotatably attached to the apparatus main body, the lower roll is rotatably supported by an eccentric bearing box eccentric to the axis of the lower roll, and the eccentric bearing box is attached to the apparatus main body. The guide plate support bracket is rotatably mounted and raises and lowers the guide plate together with the lower roll when the eccentric bearing box is rotated to adjust the gap between the upper and lower transport rolls according to the thickness of the corrugated paperboard sheet. It is provided in the eccentric bearing box, and when the eccentric bearing box is rotated, the lower roll moves up and down to adjust the gap between the upper and lower transport rolls, and at this time, the guide plate support bracket and the guide plate supported by the bracket moves up and down together with the lower roll, and the height position of the guide plate is adjusted. Therefore, even if the thickness of the corrugated sheet changes during operation, the level difference between the top surface of the lower roll and the top surface of the guide plate can be maintained constant.
The tip of the corrugated cardboard sheet does not collide with the lower roll on the downstream side of the guide plate in the conveying direction, and the feeding speed of the corrugated cardboard sheet and the circumferential speed of the lower roll can be matched, improving processing accuracy.

(Example) Next, the sheet guide device for a corrugated cardboard sheet of the present invention will be explained with reference to an example shown in FIGS. A sheet guide device, 36 is a guide plate, 37, 38, 39 are brackets, 40 is a support member, 42 is a handle, 4
3 is a shaft, 44 is a support member, 45 is a set screw, 46 is a pinion, 47 is an idle gear, 48
is the shaft, 49 and 50 are the eccentric bearing boxes, 49a,
50a is a gear, 51 and 52 are bearing holders, 5
3 is a bearing, and the seat guide device 35 includes a seat guide 36 and brackets 37, 38, 39.
The seat guide 36 includes a guide plate 36a and legs 36b fixed to the guide plate 36a in a T-shape.
It is composed of. Also, bracket 37,
37 is bearing presser 51, 51 and 52, 52
It straddles over 51a and 52a. The brackets 38 and 39 are mounted near the shafts of the receiving roll 32 and the feeding roll 33, and the bearing pressers 51 and 52 are
They are provided so as to embrace the lower semicircular portions of portions a and 52a, and are fixed to the lower portions of brackets 37 and 37, respectively. Also, the legs 36b of the seat guide 36
is fixed to the inner surface of the bracket 37 via a support member 40, and the feed roll 3 on the upper surface of the guide plate 36a
3 and the upper surface of the receiving roll 32 are maintained. The holding portions of the bearing pressers 51 and 52 are elongated holes so as to hold only either the feed roll 33 or the receiving roll 322, as shown in FIG. This elongated hole is indicated by 39'. Also, as shown in FIG. 3, with respect to the center of the feed roll 33
Eccentric bearing box 49, 50 eccentric with center Y by e′
is rotatably supported by the frames 31a and 31b, and both end shaft portions of the feed roll 34 are rotatably supported by bearings 53 of the eccentric bearing boxes 49 and 50. Furthermore, among the eccentric bearing boxes 49 and 50,
Gears 49a, 50a are formed at the portions extending outward from the frames 31a, 31b. Furthermore, bearing holders 51 and 52 are provided on the inner end surfaces of the eccentric bearings 49 and 50.
The inner diameter surface of 1 and 52 corresponds to the shaft portion 34 of the feed roll 34.
The bearing holders 51 and 52 are fixed to the eccentric bearing boxes 49 and 50 so as to face the outer peripheral surfaces of the bearings a and 34a with a slight gap therebetween. Also, an idle gear 4 meshing with the gears 49a and 50a
A shaft 48 having 7 and 47 keyed at both ends is rotatably supported by the frames 31a and 31b. Further, at one end of the shaft portion 43a of the shaft 43,
There is a keyed pinion 46, around which the upper end of a support member 44 having a set screw 45 is loosely fitted. Also, the square shaft portion 43 of the same shaft 43
A handle 42 is fixed to b as shown in FIG. In addition, the same shaft 43 is connected to the frame 3.
1a via a shaft portion 43a, and the lower end portion of the support member 44 is connected to the frame 31a.
Fixed. Also, the brackets 37, 3
9 is 51a, 51a of bearing presser 51, 52
The bearing holder 51 or 52 is rotatably engaged with the bearing holder 51 or 52 via the section. Further, as shown in FIG. 4, eccentric bearing boxes 49 and 50 whose centers are eccentric by e with respect to the center of the receiving roll 32 are attached to frames 31a and 31b.
The eccentric bearing boxes 49 and 50
Both end shaft portions of the feed roll 33 are rotatably supported by bearings 53 . Also, the brackets 37 and 38 are attached to the bearing holders 51 and 52.
Bearing holders 51 and 52 via parts a and 52a
is rotatably engaged with. Also, the receiving roll 32
Similarly to the eccentric bearing boxes 49, 50 of the feed roll 33, the eccentric bearing boxes 49, 50 have gears 47 and pinions 46, and are meshed with each other.

(Function) Next, the function of the sheet guide device in the corrugated board sheet making machine will be explained. Receiving roll 32, 3
Gap between 2' and feed rolls 33, 33' g ₃₂ , g ₃₃
(See Fig. 5) If you wish to increase or decrease the respective values, just turn the handles 42a, 42b in one of the arrows. For example, if you want to make both the gaps g ₃₂ and g ₃₃ smaller, turn the handles 42a and 42b clockwise in the direction of arrow _X1 . Then, the rotation is transmitted to gears 49a, 50a, 49 via pinion 46, idle gears 47, 47, and shaft 48.
a, 50a, the eccentric bearing boxes 49, 50 rotate around their center Y, and the center of the receiving roll 32
C ₃₂ and the center C ₃₃ of the feed roll 33 are connected to the eccentric bearing box 4
Move along a semicircular locus whose radius is the eccentricity e with respect to the center Y of 9,50, and cover the range corresponding to 2e, that is,
The receiving roll 32 _from C ₃₂ , C ₃₃ to the position C′ ₃₂ , C′ 33
The feed roll 33 moves and each roll 32, 3
3 levels are adjusted.

When the above operations are performed, the brackets 37, 39, 38 shown in FIGS.
It moves up and down as it rotates around . At this time, since the sheet guide 36 shown in FIG.
The level difference h (see FIG. 13) with the top surface of a is always kept constant.

(Effect of the invention) The sheet guide device in the corrugated sheet box making machine of the invention rotates the pinion with a handle on the upstream side when adjusting the interval between the upper and lower rolls on the upstream side as described above, and the rotation is transferred to the gear and shaft. The information is transmitted to the left and right eccentric bearing boxes on the upstream side, and each eccentric bearing box is rotated, and the left and right guide plate support brackets are swung vertically around the bearing holder on the downstream side, and the lower roll on the upstream side is rotated. Raise and lower to adjust the upper and lower roll spacing on the upstream side. Also, when adjusting the distance between the upper and lower rolls on the downstream side, rotate the pinion with a handle on the downstream side and transmit the rotation to the left and right eccentric bearing boxes on the downstream side via the gear and shaft.
By rotating each eccentric bearing box, the left and right guide plate support brackets are swung vertically around the upstream bearing holder, and the lower roll on the downstream side is raised and lowered to adjust the spacing between the upper and lower rolls on the downstream side. So,
In other words, since the height positions of the upstream lower roll and the downstream lower roll are adjusted individually, even if the thickness of the corrugated sheet changes during operation, the level difference between the upper surface of these lower rolls and the upper surface of the guide plate can be maintained. It can be held constant, the tip of the corrugated sheet does not collide with the downstream side of the guide plate in the conveying direction, and the feeding speed of the corrugated sheet and the circumferential speed of the lower roll can be matched, improving the processing accuracy of the corrugated sheet. can be improved.

In addition, a long hole-shaped bearing retaining part is formed in the conveying direction between the guide plate support bracket of the downstream lower roll and the bracket attached to it, which prevents problems caused by manufacturing errors. This has the effect of eliminating poor movement of the upstream and downstream eccentric bearings.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing an embodiment of the sheet guide device in a corrugated sheet box making machine according to the present invention, FIG. 4 is a longitudinal sectional front view taken along the arrow line in the figure, FIG. 4 is a longitudinal sectional front view taken along the arrow line in FIG. A side view of the sheet guide device, FIGS. 7 to 10 are perspective views showing the processing state of a corrugated board sheet, FIG. 11 is a vertical side view of the conventional sheet guide device, and FIG.
Longitudinal rear view along the arrow XII-XII line in the figure, No. 13, 1
FIG. 4 is an explanatory diagram of the action. 1... Corrugated cardboard sheet, 31... Left and right frames, 32'... Upper roll on the upstream side, 32... Lower roll on the upstream side, 33'... Upper roll on the downstream side, 3
3...Lower roll on the downstream side, 36...Guide plate, 3
7... Left and right guide plate support brackets, 38,3
9... Bracket, 39'... Elongated hole-shaped bearing holding part, 42... Handle, 46... Pinion, 47... Gear, 48, 48... Upstream and downstream shafts, 49, 50 ...Upstream side left and right and downstream side left and right eccentric bearing boxes, 49a, 50a...
A gear provided on the outer periphery of each eccentric bearing box 49, 50,
51, 52...Bearing holder, 53...Bearing.

Claims (1)

[Scope of utility model registration request] A pair of upper and lower transport rolls arranged on the upstream side in the transport direction, a pair of upper and lower transport rolls arranged on the downstream side in the transport direction, and a corrugated sheet exiting between the upper and lower rolls on the upstream side are transported up and down on the downstream side. The left and right ends of the upper roll on the upstream side and the upper roll on the downstream side are rotatably supported by the left and right frames, and the upper roll on the upstream side and the upper roll on the downstream side are rotatably supported on the left and right frames. The left and right ends of the lower roll are rotatably supported by eccentric bearing boxes having bearings and bearing holders, and each of the eccentric bearing boxes is supported by left and right frames so as to be rotatable about the eccentric axis. Attach left and right guide plate support brackets that hold the left and right ends of the lower roll and the downstream lower roll from above to the bearing holders of each of the eccentric bearing boxes, and connect these left and right guide plate support brackets by the guide plate,
In a sheet guide device for a corrugated sheet making machine, in which left and right brackets that hold the left and right ends of the upstream lower roll and the downstream lower roll from below are attached to the left and right bearing holders, the upstream shaft and the downstream shaft are connected to each other. A handle is attached rotatably to the left and right frames, and the gears attached to both the left and right ends of each shaft mesh with the gears provided on the outer periphery of each eccentric bearing box to drive the gear at one end of each shaft. The pinion is attached to one of the left and right frames, and a holding part for the bearing presser is formed in the shape of a long hole in the conveyance direction between the guide plate support bracket of the downstream lower roll and the bracket attached thereto. Sheet guide device in a corrugated sheet box making machine.