CN211968780U

CN211968780U - Movable front gauge device

Info

Publication number: CN211968780U
Application number: CN202020029004.3U
Authority: CN
Inventors: 唐耀存
Original assignee: Guangzhou University of Science and Technology
Current assignee: Guangzhou University of Science and Technology
Priority date: 2020-01-02
Filing date: 2020-01-02
Publication date: 2020-11-20
Anticipated expiration: 2030-01-02

Abstract

The utility model discloses a rule device before movable, the rule axle before offset press paper transfer dental unit below installation, preceding rule board pass through the screw fixation in the front on the rule axle, and machine wallboard is passed at preceding rule axle both ends, and the roller is installed at rule axle both ends in the front, is equipped with control cam above the roller, through reciprocating of rule axle before the cam control. The movable front gauge does not swing any more and only moves up and down. When the paper is required to be blocked, the front gauge plate moves upwards to block the paper (equivalent to extending), and when the paper is required to be allowed, the front gauge plate moves downwards to allow the paper (equivalent to retracting). The front and rear position adjustment of the front gauge plate is completed through the front gauge shaft which is nested inside and outside and the corresponding adjusting screw.

Description

Movable front gauge device

Technical Field

The utility model relates to a preceding rule device of printing machine especially relates to a preceding rule device of sheet-fed offset press.

Background

The front guide of the existing offset press has two types, namely an upper swing type and a lower swing type, both the upper swing type and the lower swing type belong to swing types, and paper blocking and paper yielding are realized through the swing type of the front guide. The front gauge swings to the paper transfer tooth table to block and fix paper, and the front gauge swings away from the tooth table to allow the paper to pass through.

The swing type front gauge is relatively complex in structure, a backer must be added for positioning in order to make the front gauge static when blocking paper, and the requirement on the manufacturing precision of a cam for controlling the swing of the front gauge is high in order to ensure the reliable movement of the front gauge. In order to improve the reliability of the motion of the front gauge, a conjugate cam or a double cam is adopted by many offset presses to control the swing of the front gauge, the structure is complex, and the production and the manufacture are inconvenient.

The stability of the oscillating front gauge movement is always an issue. The oscillation is impulsive and has an effect on the stability of the front guide of the printing machine, thus affecting the positioning of the front guide on the paper.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a rule device before portable, includes preceding rule board, preceding rule axle, preceding rule adjusting device, preceding rule motion control device, installs a preceding rule axle in the delivery dental unit below, and preceding rule board passes through the screw fixation in the front on the rule axle, and preceding rule axle both ends are passed machine wallboard (fluting shape aperture on the wallboard), at wallboard both ends installation control cam, realize reciprocating of preceding rule axle.

The movable front gauge plate does not swing any more and only moves up and down. When the paper is required to be blocked, the front gauge plate moves upwards to block the paper (equivalent to extending), and when the paper is required to be allowed, the front gauge plate moves downwards to allow the paper (equivalent to retracting).

The beneficial effects of the utility model are that, the utility model discloses the position is unchangeable all the time around the portable preceding rule is at work, and the position about the preceding rule board only changes, and the preceding rule board is berthhed all the time at the fender paper position. Therefore, the problem of the paper blocking positioning stability of the front gauge is thoroughly solved, and the paper blocking positioning of the front gauge is facilitated. Because the amount that the front gauge plate moves up and down is very small, the impact on the printing machine caused by the fact that the front gauge plate moves up and down under the control of the cam is also very small, and the improvement of the overall stability of the printing machine is facilitated. The movable front gauge device is simple in structure, convenient to manufacture, low in cost, convenient to adjust and superior in performance.

Drawings

Fig. 1 is a schematic diagram of a movable front gauge structure.

Fig. 2 is a schematic diagram of a front gauge motion control device.

FIG. 3 is a view showing the structure of the spring adjusting device of the front gauge shaft

FIG. 4 is a view showing the structure of the adjusting device of the elastic steel piece of the front gauge shaft

In the figure, 1, a front gauge plate (front gauge), 2, a front gauge shaft, 3, an adjusting screw, 4, a cam, 5, a roller, 6, a spring, 7, an elastic steel sheet, 8, a nut, 9, a fixing screw, 10, a bolt, 11, an inner front gauge shaft and 12, an outer front gauge shaft

Detailed Description

The invention will be further described with reference to the following embodiments:

[ example 1 ]

The top of the front gauge plate 1 is semicircular or rectangular with round corners, the front gauge plate 1 is fixed on the front gauge shaft through screws, the assembly and disassembly can be convenient, and the number of the front gauge plates is multiple.

A hole is formed in the wall plate of the machine in a slotted mode, the upper limit of the hole is the highest position of the front gauge moving upwards, and the lower limit of the hole is the lowest position of the front gauge moving downwards. The hole width is equal to the front gauge shaft, but the front gauge shaft can freely move up and down in the hole. In order to prevent the wallboard from being worn due to the movement of the front gauge shaft, copper bearing bushes are added in wallboard holes, and lubricating oil is filled in the wallboard holes.

Referring to fig. 2, a roller 5 (bearing) is installed on the front gauge head, and a control cam 4 is arranged above the roller 5. The cam 4 rotates to control the up-and-down movement of the roller 5, the moving amount is controlled to be 3mm, namely the up-and-down movement stroke of the front gauge plate 1 is 3mm, and the up-and-down movement extending amount is 3mm when the front gauge plate 1 moves downwards to the same face with the paper transfer tooth table. In order to ensure that the two ends of the front gauge shaft 2 move up and down simultaneously, the same cams 4 are arranged at the two ends of the front gauge shaft 2, and the two ends are used for controlling the front gauge shaft 2 to move up and down simultaneously. The upward movement of the front gauge shaft 2 is controlled by the cam 4 and the downward movement of the front gauge shaft 2 is controlled by a tension spring (not shown), but the reverse is possible by mounting the cam 4 below the front gauge shaft 2 so that the downward movement of the front gauge shaft 2 is controlled by the cam 4 and the upward movement of the front gauge shaft 2 is controlled by the tension spring.

Referring to fig. 3, in order to enable the front and back positions of the front gauge to be adjustable, an adjusting device is arranged on the front gauge shaft 2, an outer front gauge shaft 12 is sleeved on the middle portion of an inner front gauge shaft 11, a front gauge plate 1 is arranged on the outer front gauge shaft 12, the inner front gauge shaft 11 extends out of a machine wall plate, the width of the inner front gauge shaft 11 is smaller than the inner hole width of the outer front gauge shaft 12, and the height of the inner front gauge shaft 11 is just consistent with the inner hole height of the outer front gauge shaft 12. One side of the inner front gauge shaft 11 is tightly propped by a nut 8 through a spring 6, the other side of the inner front gauge shaft is directly screwed by an adjusting screw 3, and the front and back adjustment of the position of the front gauge can be realized by rotating the adjusting screw 3 by hand. In order to prevent the adjusting screw 3 from automatically loosening, a stop is added on the outer edge of the screw 3. The left end and the right end of the adjusting mechanism are respectively provided with one adjusting mechanism, so that the two ends of the adjusting mechanism are respectively adjusted. In order to realize automatic adjustment, the adjusting screw 3 is driven by a servo motor. In order to enable the adjusting screw 3 to be screwed on the front gauge shaft more stably, the thickness of the outer front gauge shaft 12 is increased to 10mm at the adjusting screw 3, and similarly, thickening processing is also carried out at the fastening nut 8 so as to increase the number of turns of the spring and improve the elasticity performance. In order to prevent the outer front caliper 12 from moving left and right, a stopper bolt 10 is inserted through the two shafts, and the bolt 10 is fastened to the outer front caliper 12 by a nut.

[ example 2 ]

Instead of the screw and spring scheme, the front gauge front-rear position adjusting mechanism may also adopt an elastic steel sheet 7 mounted on one side of the inner front gauge shaft 11, wherein the elastic steel sheet 7 is fixed on the side surface of the inner front gauge shaft 11 by a fixing screw 8, and as shown in fig. 4, the two front gauge shafts are tightly pressed by the elastic force of the steel sheet 7.

Claims

1. Rule device before portable, including preceding compasses board (1), preceding rule axle (2), preceding rule adjusting screw (3), cam (4) of rule motion before the control, interior preceding rule axle (11), outer preceding rule axle (12), characterized by: preceding compasses board (1) is fixed on preceding compasses axle (2) through the screw, and machine wallboard is passed at preceding compasses axle (2) both ends, and roller (5) are all equipped with at preceding compasses axle both ends, and roller (5) are close to cam (4) through the extension spring, and two preceding compasses axles are nested inside and outside, and interior preceding compasses axle is pushed up in adjusting screw (3), and interior preceding compasses axle pushes up each other through spring (6) or steel sheet (7) before inside and outside, and interior preceding compasses axle is equipped with stop bolt (10) that prevents to move each other.

2. The mobile forego gauge according to claim 1, characterized in that the top of the forego gauge (1) is semicircular or rectangular with rounded corners, and the number of the forego gauge (1) can be 2, 4, 6 or more.

3. The movable front gauge device according to claim 2, characterized in that the front gauge shaft (2) is internally and externally nested, the inner front gauge shaft (11) penetrates through the machine wall plate, the outer front gauge shaft (12) is sleeved outside the inner front gauge shaft (11), and an adjustable gap is reserved between the outer front gauge shaft (12) and the inner front gauge shaft (11) in the front-back direction.

4. The movable front gauge device according to claim 3, characterized in that rollers (5) are respectively arranged at two ends of the front gauge shaft, a cam (4) is arranged close to the rollers (5), the rollers (5) are close to the cam (4) by a tension spring, and the rollers (5) are driven to move up and down by the rotation of the cam (4), so that the front gauge shaft (2) is driven to move up and down.

5. The mobile front gauge according to claim 4, characterized in that the adjusting screw (3) abuts against the inner front gauge shaft (11), the other side of the inner front gauge shaft (11) abuts against the outer front gauge shaft (12) with a spring (6) or a steel plate (7), the spring (6) is fastened to the outer front gauge shaft with a nut (8), and the steel plate (7) is fastened to the inner front gauge shaft with a screw (9).

6. A mobile front gauge according to claim 5, characterized in that the inner and outer front gauge shafts are provided with a through hole in which a stop bolt (10) is inserted, the bolt (10) being screwed onto the outer front gauge shaft (12) using a nut, there being a slight clearance between the front gauge shaft and the bolt (10).