CN116142866A - A kind of double-offset paper printing output paper collection device and method - Google Patents

Abstract

The invention discloses a double-glue paper printing paper collecting device and method, and relates to the technical field of printing. In the invention, the following components are added: one side of a paper outlet of the discharging base frame is provided with a first position detector for vertically and downwards detecting, wherein the first position detector is positioned above the paper outlet. The opposite side of the paper outlet of the discharging base frame is fixedly provided with a side position detection assembly, and the side position detection assembly is provided with a plurality of distance sensing probes with sensing detection directions inclined towards the direction of the paper outlet and a second direction detector for vertical downward sensing detection. The paper outlet below of ejection of compact bed frame is furnished with high-order trachea spare, low level trachea spare, and high-order trachea spare is located low level trachea spare top, and ejection of compact bed frame is furnished with the high rotary mechanism who is used for driving adjustment high-order trachea spare turned angle, is used for driving adjustment low-order trachea spare turned angle's low level rotary mechanism. The invention avoids the inner winding of the front end position in the falling process of the paper outlet paper, and reduces the influence degree of the front end of the paper outlet paper on the surface printing of the lower paper.

Description

A kind of double-offset paper printing output paper collection device and method

technical field

The invention relates to the technical field of printing, in particular to a device and a method for collecting printed output paper on offset paper.

Background technique

Double-offset paper is mainly used for lithographic (offset) printing presses or other printing presses to print higher-level color prints. It is suitable for printing single-color or multi-color book covers, texts, inserts, pictorials, maps, posters, and color trademarks. And various packaging paper.

When offset paper is printed and output, affected by its own weight, the output paper naturally sags and falls in an arched shape overall. When the front end of the output paper falls on the supporting bracket or the upper side of the existing paper, sometimes "inward curling" or Page "overturning" phenomenon, and the front end of the output paper will scratch the upper surface of the collected paper, which may have adverse effects on some offset printing that is not completely "dried".

Contents of the invention

The technical problem to be solved by the present invention is to provide a device and method for collecting paper printed on offset paper, so as to prevent the front end of the paper from being rolled inward during the falling process of the paper, and reduce the influence of the front end of the paper on the printing on the surface of the lower paper.

In order to solve the problems of the technologies described above, the present invention is achieved through the following technical solutions:

The invention provides a paper collection device for double-offset paper printing, which includes a discharge base frame, a paper discharge mechanism and a paper outlet are arranged on the upper part of the discharge base frame, and a paper support assembly and a sliding gear are arranged on the inner periphery of the discharge base frame. Assemblies, the paper support assembly includes a bracket and a servo motor for driving and adjusting the height position of the bracket, and the sliding gear assembly includes a lifting baffle and a sliding adjustment device for driving and adjusting the height of the lifting baffle, wherein the lifting baffle The side end is provided with a landslide angle plate. A first azimuth detector that detects vertically downwards is arranged on one side of the paper outlet of the material outlet base frame, wherein the first azimuth detector is located above the paper outlet. The opposite side of the paper outlet of the discharge base frame is fixedly equipped with a side position detection component, and the side position detection component is equipped with a number of distance sensing probes whose sensing detection direction is inclined towards the direction of the paper outlet, and a vertical downward sensing detection first sensor. Two-way detector. Below the paper outlet of the discharge base frame, there are high-position air pipes and low-position air pipes. The high-position air pipes are located above the low-position air pipes. A low-position rotating mechanism for adjusting the rotation angle of the low-position trachea piece.

As a preferred technical solution of the double-adhesive paper printing and output collecting device of the present invention: the output end of the servo motor is equipped with an output shaft, the output shaft is provided with a threaded section, the bottom side of the bracket is fixedly connected to the lifting frame, and the bottom of the lifting frame is provided with a threaded cylinder. The threaded section of the output rotating shaft is screwed on the threaded cylinder.

As a preferred technical solution of the offset paper printing output paper collecting device of the present invention: the bracket is provided with a vertical slot, and the lifting baffle moves through the vertical slot.

As a preferred technical solution of the offset paper printing output paper collecting device of the present invention: the horizontal position of the highest distance sensing probe among several distance sensing probes is higher than the horizontal position of the paper outlet.

As a preferred technical solution of the offset paper printing output paper collecting device of the present invention: the side position detection component includes a fixed bracket fixedly connected to the inner wall of the discharge base frame, the second azimuth detector is fixedly installed at the position of the fixed bracket, and the fixed bracket The side end is vertically connected to the oblique side substrate, and a plurality of distance sensing probes are installed in the area under the oblique side substrate.

As a preferred technical solution of the offset paper printing output paper collection device of the present invention: the output base frame is equipped with a side ventilation net located on the opposite side of the high-position air pipe part and the low-position air pipe part.

The invention provides a method for collecting offset paper printing output paper, the specific method steps are as follows:

S1. When the detector at the first position does not detect paper output downwards, the high-position rotating mechanism drives the high-position air pipe to rotate to the "high initial position", and the low-position rotating mechanism drives the low air pipe to rotate to the "low initial position".

即当任意一位置处的距离传感探头探测到纸张遮挡信号，高位气管件就转动至与该距离传感探头所在位置对应的上倾斜角位置，其中，低位置处上倾斜角位置的优先级高于高位置处上倾斜角位置的优先级。S2. The paper output mechanism starts to output paper, the first position detector detects the paper output state, and several distance sensing probes are activated to detect the blocking signal of the position of the front end of the output paper. It is assumed that the positions of several distance sensing probes distributed from top to bottom are {W ₁ W ₂ W ₃ . . . W _n }. Assume that there are n angles {α ₁ α ₂ α ₃ ... α _n } in the inclination position of the rotation of the high-position air pipe, where the upward inclination angles of α ₁ , α ₂ , α ₃ , ..., α _n decrease successively Small. then exists:

That is, when the distance sensing probe at any position detects the paper occlusion signal, the high-position air pipe will rotate to the position of the upward inclination angle corresponding to the position of the distance sensing probe, wherein the priority of the position of the upward inclination angle at the low position is Takes precedence over upslope positions at high positions.

S3. The multiple distance sensing probes that have detected the paper occlusion signal synchronously detect the distance information of the corresponding position, assuming that the distance information detected by the multiple distance sensing probes from top to bottom is {S ₁ S ₂ S ₃ . _..Sm }. If the distance information detected by the distance sensing probe at the lowest position is not the minimum value of all distance information, there is a paper arching difference ΔS=S _m -S _min , where S _min is the distance detected by multiple distance sensing probes The minimum distance information of . Assuming that the air outlet rate of the high-position air pipe is F(V), then the air outlet rate is F(V)∝ΔS.

S4. When the distance sensor probe at the lowest position in the side position detection component detects the paper blocking signal, the high-position air pipe stops blowing, and the high-position rotating mechanism drives the high-position air pipe to rotate upwards to the "high initial position", and at the same time it is in the "low initial position". The low-position air pipe piece in the "position" starts to discharge air, and the low-position rotating mechanism drives the low-position air pipe piece to rotate upwards at a constant speed to a certain angle and then stops rotating.

S5. After the detector at the first position fails to detect the paper blocking signal, the low-position air pipe part stops blowing air, and the low-position rotating mechanism drives the low-position air pipe part to rotate downward again to the "low initial position".

Compared with prior art, the beneficial effect of the present invention is:

During the paper discharging process, the present invention detects the motion state of the discharged paper in real time through the side position detection component, and blows the position and strength of the front end of the discharged paper dynamically through the high-position air pipe to avoid paper discharge. When the paper is falling, the front end is rolled inward, and the front end of the output paper is "air pushed" through the low-position air pipe, and an air film is also formed between the output paper and the lower paper, reducing the printing impact of the front end of the output paper on the lower paper surface influence level.

Description of drawings

Fig. 1 is a schematic structural view of a paper collecting device printed on offset paper according to the present invention.

Fig. 2 is a schematic diagram of the paper discharging mechanism in the present invention when discharging paper.

Fig. 3 is a schematic diagram of when the output paper reaches the lowest position of the distance sensing probe in the present invention.

Fig. 4 is a schematic diagram of the middle and lower air pipes of the present invention when blowing air.

Fig. 5 is a schematic diagram of the present invention when the low-level air tube part stops blowing and resets.

Among them: 1-discharge base frame; 2-paper support assembly, 201-servo motor, 202-output shaft, 203-thread section, 204-lifting frame, 205-thread barrel, 206-bracket, 207-longitudinal slot ;3-sliding gear assembly, 301-sliding adjustment device, 302-lifting baffle, 303-landslide angle plate; 4-paper outlet mechanism, 401-paper outlet; 5-first orientation detector; 6-side position Detection assembly, 601-fixing bracket, 602-oblique side substrate, 603-distance sensing probe, 604-second azimuth detector; 7-high air pipe part; 8-high rotating mechanism; 9-low air pipe part; 10-low position Rotating mechanism; 11-side ventilation net; 12-double offset printing paper.

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

Embodiment one

Please refer to Fig. 1, the present invention relates to a kind of offset paper printing output paper collection device, the specific structural configuration is as follows:

The paper outlet mechanism 4 and the paper outlet 401 are located on the upper part of the outlet base frame 1, and the first orientation detector 5 (the first orientation detector 5 can be a photoelectric sensor) is installed on the side of the paper outlet 401 of the outlet base frame 1 position, the first orientation detector 5 is located above the paper outlet 401, and the first orientation detector 5 detects vertically downward.

The high-position air pipe part 7 and the low-position air pipe part 9 are embedded and installed below the paper outlet 401 of the discharge base frame 1, the high-position air pipe part 7 is located above the low-position air pipe part 9, and the discharge base frame 1 is equipped with a high-position rotation mechanism 8 and a low-position rotation mechanism. The mechanism 10, the high-position rotating mechanism 8 is used to drive and adjust the rotation angle of the high-position air pipe part 7, and the low-position rotation mechanism 10 is used to drive and adjust the rotation angle of the low-position air pipe part 9. The discharge pedestal 1 is equipped with a side ventilation net 11 located on the opposite side of the high-position air pipe part 7 and the low-position air pipe part 9. When the high-position air pipe part 7 and the low-position air pipe part 9 blow air, the airflow can be smoothly discharged from the side ventilation net 11.

The side detection assembly 6 is fixedly installed on the opposite side of the paper outlet 401 of the discharge base frame 1. The side detection assembly 6 includes a fixed bracket 601 and an oblique side substrate 602. The fixed bracket 601 is fixedly connected to the inner wall of the discharge base frame 1. , the oblique side substrate 602 is arranged obliquely, the oblique side substrate 602 is vertically fixedly connected to the side end position of the fixed bracket 601, the second orientation detector 604 is fixedly installed at the position of the fixed bracket 601, and the second orientation detector 604 senses vertically downward For detection (the second orientation detector 604 can be a photoelectric distance sensor), several distance sensing probes 603 are installed in the oblique lower area of the inclined side substrate 602, and the sensing and detection directions of the several distance sensing probes 603 are inclined towards the paper outlet 401 orientation. Among the several distance sensing probes 603 , the horizontal position of the highest distance sensing probe 603 is higher than the horizontal position of the paper outlet 401 .

The inner periphery of the discharge base frame 1 is equipped with a paper support assembly 2, the paper support assembly 2 includes a servo motor 201, a bracket 206, the servo motor 201 includes an output shaft 202 arranged vertically upward, and the output shaft 202 is provided with a threaded section 203, The bottom side of the bracket 206 is fixedly connected to the lifting frame 204, and the bottom of the lifting frame 204 is provided with a threaded cylinder 205, and the threaded section 203 of the output shaft 202 is screwed at the position of the threaded cylinder 205 (the inner wall of the threaded cylinder 205 is threaded, and the threaded section of the output shaft 202 203 is threadedly connected with the threaded cylinder 205 inner wall), the servo motor 201 drives the output shaft 202 to rotate, and the threaded section 203 and the threaded cylinder 205 rotate relatively, so that the lifting frame 204 and the bracket 206 can be linearly adjusted to lift.

The inner periphery of the discharge base frame 1 is equipped with a sliding gear assembly 3, the sliding gear assembly 3 includes a sliding adjustment device 301, a lifting baffle 302, and a sliding angle plate 303, and the sliding adjustment device 301 is used to drive and adjust the height position of the lifting baffle 302 , the landslide angle plate 303 is located at the upper end position of the lifting baffle 302 . Wherein, the bracket 206 is provided with a vertical slot 207 whose structural size matches the lifting baffle 302 , and the lifting baffle 302 moves through the vertical slot 207 .

Embodiment two

The present invention relates to a kind of offset paper printing output paper collection method, the specific steps are as follows:

In the first step, when the first orientation detector 5 does not detect paper output downwards, the high-position rotating mechanism 8 drives the high-position air pipe part 7 to rotate to the "high initial position" (as shown in Figure 1, the high-position air pipe part 7 is within the rotatable range maximum up-tilt position), the low-position rotating mechanism 10 drives the low-position air pipe part 9 to rotate to the "low initial position" (as shown in Figure 1, the low-position air pipe part 9 is at the maximum down-tilt position within the rotatable range).

In the second step, in conjunction with Fig. 2, the paper discharge mechanism 4 starts to discharge the paper, the first orientation detector 5 detects the paper discharge state, and several distance sensing probes 603 are activated to detect the blocking signal of the front end of the paper discharge (distance sensing The function of the probe 603 itself is to detect the distance, but when there is no paper cover, the distance signal detected by the distance sensing probe 603 is beyond its own detection distance parameter, and it can also be considered that the detected distance is ∞. The sensing probe 603 can detect the normal distance parameter, and the change of this state signal can be regarded as the "0" change of the level signal to "1"). It is assumed that the positions of the distance sensing probes 603 distributed from top to bottom are {W ₁ W ₂ W ₃ . . . W _n }. It is assumed that there are n angles {α ₁ α ₂ α ₃ ... α _n } in the inclination position of the rotation of the high-position air pipe piece 7, wherein, the upward inclination angles of α ₁ , α ₂ , α ₃ , ..., α _n are sequentially decrease.

即当任意一位置处的距离传感探头603探测到纸张遮挡信号，高位气管件7就转动至与该距离传感探头603所在位置对应的上倾斜角位置，其中，低位置处上倾斜角位置的优先级高于高位置处上倾斜角位置的优先级，即有两个复合纸张遮挡信号要求的距离传感探头603，对应高位气管件7的两个上倾斜角位置，优先执行低位置处上倾斜角的位置动作。exist:

That is, when the distance sensing probe 603 at any position detects the paper occlusion signal, the high-position air pipe part 7 is rotated to the position of the upper inclination angle corresponding to the position of the distance sensing probe 603, wherein the upper inclination angle position at the lower position is The priority is higher than the priority of the upper angle position at the high position, that is, there are two distance sensing probes 603 required by the composite paper occlusion signal, corresponding to the two upper angle positions of the high air pipe 7, and the low position is given priority The position action on the inclination angle.

In the third step, the multiple distance sensing probes 603 that have detected the paper occlusion signal synchronously detect the distance information of the corresponding position, and the distance information detected by the multiple distance sensing probes 603 from top to bottom is sequentially {S ₁ S ₂ S ₃ ... S _m }.

If the distance information detected by the lowest position distance sensing probe 603 is not the minimum value of all distance information, there is a difference in paper arching (for example, in Figure 2, the paper is arched, which is actually an arc) ΔS=S _m -S _min , wherein, S _min is the minimum value of the distance information detected by the plurality of distance sensing probes 603 .

Assuming that the air outlet rate of the high-position air pipe piece 7 is F(V), then the air outlet rate is F(V)∝ΔS. The difference in paper arching is large, and the paper falling on the bracket 206 is prone to inward curling. Increase the air flow rate and blow air on the front end of the paper to "straighten" the paper to a certain extent, reducing the difference in paper arching.

In the fourth step, in conjunction with Fig. 3 and Fig. 4, when the distance sensing probe 603 at the lowest position in the side position detection assembly 6 detects the paper blocking signal (such as the position of the paper in Fig. 3 and the detection orientation of the distance sensing probe 603), The high-position air pipe part 7 stops blowing, the high-position rotating mechanism 8 drives the high-position air pipe part 7 to rotate upwards to the "high initial position", and at the same time the low-position air pipe part 9 in the "low initial position" starts to discharge air, and the low-position rotating mechanism 10 drives the low-position air pipe part 9 Rotate upwards at a constant speed to a certain angle and stop rotating. When the paper slides down to the bracket 206, the lower air pipe 9 tilts and blows air, continuously "blowing" the front end of the paper forward, and at the same time forms an "air film" between the front end of the paper and the upper surface of the stationary paper below, lowering the front end of the new paper and the lower surface. The "friction" of the paper protects the freshly printed offset color graphics on the underlying paper.

In the fifth step, referring to Fig. 5, after the first position detector 5 fails to detect the paper blocking signal downwards, the low-position air pipe part 9 stops blowing air, and the low-position rotating mechanism 10 drives the low-position air pipe part 9 to rotate downward again to the "low initial position" ".

In addition, in the present invention, the second azimuth detector 604 detects the stacking height of the paper on the bracket 206. When the paper is less, the servo motor 201 below drives the output shaft 202 to rotate. Rotate to adjust the bracket 206 upwards. As the paper accumulation increases, the servo motor 201 can also drive the bracket 206 to linearly lower. In this way, the uppermost layer of paper is guaranteed to be at a certain height. Simultaneously, the sliding adjustment device 301 adjusts the positions of the lifting baffle 302 and the landslide angle plate 303 according to the paper accumulation and the height position of the bracket 206, so as to cooperate with the whereabouts and collection of newly discharged paper.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. within range.

Claims (7)

1. The utility model provides a two gluey paper printing play paper collection device which characterized in that:

the automatic paper feeding device comprises a discharging base frame (1), wherein a paper discharging mechanism (4) and a paper outlet (401) are arranged on the upper portion of the discharging base frame (1), a paper supporting component (2) and a sliding gear component (3) are arranged on the inner periphery of the discharging base frame (1), the paper supporting component (2) comprises a bracket (206) and a servo motor (201) used for driving and adjusting the height position of the bracket (206), the sliding gear component (3) comprises a lifting baffle (302) and a sliding adjusting device (301) used for driving and adjusting the height position of the lifting baffle (302), and a sliding angle plate (303) is arranged at the upper side end of the lifting baffle (302);

a first position detector (5) for vertically and downwards detecting is arranged on one side of a paper outlet of the discharging base frame (1), wherein the first position detector (5) is positioned above the paper outlet (401);

a side position detection assembly (6) is fixedly arranged on the opposite side of a paper outlet (401) of the discharging base frame (1), and the side position detection assembly (6) is provided with a plurality of distance sensing probes (603) with sensing detection directions inclined towards the direction of the paper outlet (401) and a second direction detector (604) with vertical downward sensing detection;

the paper outlet (401) of the discharging base frame (1) is provided with a high-position air pipe (7) and a low-position air pipe (9), the high-position air pipe (7) is arranged above the low-position air pipe (9), and the discharging base frame (1) is provided with a high-position rotating mechanism (8) for driving and adjusting the rotating angle of the high-position air pipe (7) and a low-position rotating mechanism (10) for driving and adjusting the rotating angle of the low-position air pipe (9).

2. The double-sided offset printing output paper collection device according to claim 1, wherein:

output rotating shaft (202) is configured at the output end of servo motor (201), output rotating shaft (202) is provided with screw thread section (203), bracket (206) bottom side fixed connection crane (204), crane (204) bottom is provided with screw thread section (205), screw thread section (203) spiro union of output rotating shaft (202) is in screw thread section (205) position department.

3. The double-sided offset printing output paper collection device according to claim 1, wherein:

the bracket (206) is provided with a longitudinal slot (207), and the lifting baffle (302) movably penetrates through the longitudinal slot (207).

4. The double-sided offset printing output paper collection device according to claim 1, wherein:

the horizontal position of the highest distance sensing probe (603) in the plurality of distance sensing probes (603) is higher than the horizontal position of the paper outlet (401).

5. The double-sided offset printing output paper collection device according to claim 1, wherein:

the side position detection assembly (6) comprises a fixed support (601) fixedly connected to the inner wall of the discharging base frame (1), the second position detector (604) is fixedly installed at the position of the fixed support (601), the side end of the fixed support (601) is vertically connected with an inclined side substrate (602) which is obliquely arranged, and a plurality of distance sensing probes (603) are installed in the area below the inclined side substrate (602).

6. The double-sided offset printing output paper collection device according to claim 1, wherein:

the discharging base frame (1) is provided with a side ventilation net (11) positioned at the opposite side positions of the high-position air pipe (7) and the low-position air pipe (9).

7. A double-sided tape printing output paper collection method, characterized by employing a double-sided tape printing output paper collection apparatus as claimed in any one of claims 1 to 6, comprising the steps of:

s1, when the first orientation detector (5) does not detect paper out downwards, the high-position rotating mechanism (8) drives the high-position air pipe (7) to rotate to a high-position initial position, and the low-position rotating mechanism (10) drives the low-position air pipe (9) to rotate to a low-position initial position;

s2, starting paper output by a paper output mechanism (4), detecting a paper output state by a first orientation detector (5), starting a plurality of distance sensing probes (603), and detecting a shielding signal at the front end of paper output;

the positions of a plurality of distance sensing probes (603) distributed from top to bottom are sequentially { W ] ₁ W ₂ W ₃ ...W _n }；

There are n angles { alpha } in the angular position at which the high-order air pipe (7) rotates ₁ α ₂ α ₃ ...α _n And }, wherein alpha ₁ 、α ₂ 、α ₃ 、...、α _n The upper inclination angle of the upper part is sequentially reduced;

then there is:

namely, when a paper shielding signal is detected by a distance sensing probe (603) at any position, the high-level air pipe (7) rotates to an upper inclined angle position corresponding to the position of the distance sensing probe (603), wherein the priority of the upper inclined angle position at a low position is higher than that of the upper inclined angle position at a high position;

s3, synchronously detecting distance information of corresponding positions by a plurality of distance sensing probes (603) which have detected the paper shielding signals, wherein the distance information detected by the plurality of distance sensing probes (603) from top to bottom is { S } ₁ S ₂ S ₃ ...S _m }；

If the minimum value among the distance information detected by the lowest position distance sensor probe (603) is not the minimum value among all the distance information, a sheet doming difference DeltaS=S exists _m -S _min Wherein S is _min Minimum value of distance information detected in a plurality of distance sensing probes (603);

setting the air outlet rate of the high-level air pipe (7) as F (V), and setting the air outlet rate as F (V) therebyto delta S;

s4, stopping blowing the high-position air pipe (7) after the distance sensing probe (603) at the lowest position in the side position detection assembly (6) detects a paper shielding signal, driving the high-position air pipe (7) to swing upwards to a high-position initial position by the high-position rotating mechanism (8), starting to give off air by the low-position air pipe (9) at the low-position initial position, and stopping rotating after the low-position air pipe (9) is driven by the low-position rotating mechanism (10) to uniformly rotate upwards to a certain angle;

s5, after the first orientation detector (5) can not detect the paper shielding signal downwards, the low-position air pipe (9) stops blowing, and the low-position rotating mechanism (10) drives the low-position air pipe (9) to rotate downwards to the low-position initial position again.

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