Sequential paper suction control system and method for nesting and sticking machine

Abstract

The invention relates to the technical field of post-press equipment, in particular to a sequential paper suction control system and method.The paper suction control system comprises a PLC control unit, an air source, a first paper feeding device and a second paper feeding device, the air source, the first paper feeding device and the second paper feeding device are controlled by the PLC control unit, and the air source is connected with a first suction cup set and a second suction cup set; a control valve is arranged between the air source and the first suction cup set and controlled by the PLC control unit. According to the sequential paper suction control system and method for the page nesting and sticking machine, the control valve is additionally arranged between the air source and the first set of suction cups, the PLC control unit controls the control valve to be opened according to the paper feeding condition of the second set of paper feeding device, and therefore the air supply time of the air source to the first set of suction cups is controlled, lagging paper suction of the first set of suction cups is achieved, and paper suction efficiency is improved. It is guaranteed that the first book on the first paper feeding device is accurately attached to the first book on the second paper feeding device, waste of the first book is avoided, and paper waste and labor waste are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of post-printing equipment, in particular to a sequential paper suction control system and method for a sheet-stitching and gluing machine. Background Art

[0002] The sheet gluing machine is a device mainly used for gluing book pages or book signatures. The sheet gluing machine usually includes a frame, and two sets of book placing tables, a paper gripping and paper discharging mechanism, a paper feeding mechanism, a glue bucket mechanism, a pressing mechanism, and a book receiving table are sequentially arranged on the frame. During the operation of the sheet gluing machine, the book pages to be glued are placed on the book placing table, and the paper gripping and paper discharging mechanism respectively delivers the book pages from the book placing table to the paper feeding mechanism. After one of the book pages is glued by the glue bucket mechanism, the two book pages are aligned and attached, and are sent to the pressing mechanism by the paper feeding mechanism to be glued to each other, thereby completing the gluing of the book pages, and the glued pages are sent to the book receiving table.

[0003] When using the sheet-gluing machine, two sets of book placing tables place book pages at the same time, and the paper gripping and paper lowering mechanisms convey book pages at the same time. However, since the two sets of book placing tables and the paper gripping and paper lowering mechanisms are sequentially arranged and there is a distance difference between them, the first book page often has no book body to be pasted with it, resulting in waste pages of the first book paste, which need to be manually removed. Summary of the invention

[0004] The object of the present invention is to provide a sequential paper suction control system and method for a cover-gluing machine, aiming to solve the problem of waste of the first book label caused by the existing cover-gluing machine during the cover-gluing process and reduce the generation of waste products.

[0005] In order to solve the above technical problems, the present invention provides a sequential paper suction control system for a sheet-binding and gluing machine, wherein the paper suction control system comprises a PLC control unit and an air source, a first paper feeding device and a second paper feeding device controlled by the PLC control unit.

[0006] The first paper feeding device comprises a first book placing platform, a first suction cup group and a first paper transfer cam group, and the second paper feeding device comprises a second book placing platform, a second suction cup group and a second paper transfer cam group. The first book placing platform and the second book placing platform are arranged in parallel between the frames of the sheet-binding and gluing machine, the first suction cup group is arranged at one side of the first book placing platform, the first paper transfer cam group is arranged below the first suction cup group, the second suction cup group is arranged at one side of the second book placing platform, and the second paper transfer cam group is arranged below the second suction cup group.

[0007] The air source is connected to the first suction cup group and the second suction cup group respectively, a control valve is arranged between the air source and the first suction cup group, and the control valve is controlled by a PLC control unit.

[0008] Specifically, the air source is a vacuum pump, and the vacuum pump is connected to the first suction cup group and the second suction cup group through an air pipe.

[0009] Furthermore, the first paper transfer cam group and the second paper transfer cam group are both provided with a paper gripper assembly.

[0010] The present invention also provides a sequential paper suction control method for a sheet-binding and gluing machine, using the control system described above, the control method comprises the following steps:

[0011] S1, after the PLC control unit controls the air source to be turned on, the air source supplies air to the second suction cup group, and the second suction cup group starts to suck paper. At the same time, the PLC control unit controls the second paper transfer cam to rotate, and the paper gripper assembly on the second paper transfer cam grips the paper;

[0012] S2, the PLC control unit controls the control valve to open, the air source supplies air to the first suction cup group, the first suction cup group starts to suck paper, so that the first suction cup group sucks paper later than the second suction cup group, and at the same time the PLC control unit controls the first paper transfer cam group to rotate, and the paper gripper assembly on the first paper transfer cam group grips paper;

[0013] S3, the second paper transfer cam first transports the first book block to the paper feed guide rail, and when the paper feed guide rail continues to transport it to the bottom of the first paper transfer cam group, it overlaps with the first paper transported to the paper feed guide rail by the first paper transfer cam group, and enters the next process at the same time.

[0014] Preferably, after the PLC control unit controls the second paper transfer cam group to complete the paper gripping action and the second paper transfer cam group rotates half a circle, the PLC control unit controls the control valve to open, and the air source supplies air to the first suction cup group.

[0015] Preferably, the PLC control unit controls the opening of the solenoid valve based on the time difference between the start of the paper sucking action of the first suction cup group and the time when the paper is delivered to the paper feed guide rail under the first paper transfer cam group, and the time difference between the start of the paper sucking action of the second suction cup group and the time when the paper is delivered to the paper feed guide rail under the first paper transfer cam group.

[0016] The beneficial effects of the present invention are as follows: the sequential paper suction control system and method of the cover-gluing machine of the present invention adds a control valve between the air source and the first group of suction cups, and the PLC control unit controls the opening of the control valve according to the paper feeding situation of the second group of paper feeding devices, thereby controlling the air supply time of the air source to the first suction cup group, realizing delayed paper suction by the first group of suction cups, ensuring that the first book label on the first group of paper feeding devices is accurately attached to the first book body on the second group of paper feeding devices, avoiding the waste of the first book label, and reducing the waste of paper and labor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a structural schematic diagram of the sequential paper sucking part of the sheet-gluing machine of the present invention;

[0019] In the figure: 1-sheet-gluing machine frame, 2-first book-placing platform, 3-first suction cup group, 4-first paper-transferring cam group, 5-second book-placing platform, 6-second suction cup group, 7-second paper-transferring cam group, 8-paper-gripping tooth assembly. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the specification of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] In a specific embodiment of the present invention, Figure 1 As shown, a sequential paper suction control system for a sheet-binding and gluing machine, the paper suction control system comprises a PLC control unit and an air source controlled by the PLC control unit, a first paper feeding device and a second paper feeding device,

[0022] The first paper feeding device includes a first book placing table 2, a first suction cup group 3 and a first paper transfer cam group 4, and the second paper feeding device includes a second book placing table 5, a second suction cup group 6 and a second paper transfer cam group 7. The first book placing table 2 and the second book placing table 5 are arranged in parallel between the frame 1 of the sheet-stuffing and gluing machine, the first suction cup group 3 is arranged on one side of the first book placing table 2 and the top of the suction cup is flush with the book placing table, the first paper transfer cam group 4 is arranged below the first suction cup group 3, the second suction cup group 6 is arranged on one side of the second book placing table 5 and the top of the suction cup is flush with the book placing table, and the second paper transfer cam group 7 is arranged below the second suction cup group 6; the first paper transfer cam group 4 and the second paper transfer cam group 7 are both provided with a paper gripper assembly 8.

[0023] The air source is connected to the first suction cup group 3 and the second suction cup group 6 respectively, and a control valve is provided between the air source and the first suction cup group 3, and the control valve is controlled by a PLC control unit. Specifically, the air source is a vacuum pump, and the vacuum pump is connected to the first suction cup group 3 and the second suction cup group 6 through an air pipe, and the control valve is provided on the connecting air pipe between the vacuum pump and the first suction cup group.

[0024] The present invention also provides a sequential paper suction control method for a sheet-binding and gluing machine, using the control system described above, the control method comprises the following steps:

[0025] S1, after the PLC control unit controls the air source to be turned on, the air source supplies air to the second suction cup group, and the second suction cup group starts to suck paper. At the same time, the PLC control unit controls the second paper transfer cam group to rotate, and the paper gripper assembly on the second paper transfer cam group grips the paper;

[0026] S2, after the PLC control unit controls the second paper transfer cam to grip the paper and the second paper transfer cam rotates half a circle, the PLC control unit controls the control valve to open, the air source supplies air to the first suction cup group, the first suction cup group starts to suck the paper, so that the first suction cup group sucks the paper later than the second suction cup group. At the same time, the PLC control unit controls the first paper transfer cam group to rotate, and the paper gripper assembly on the first paper transfer cam group grips the paper;

[0027] S3, the second paper transfer cam group first transports the first book block to the paper feed guide rail, and when the paper feed guide rail continues to transport it to the bottom of the first paper transfer cam group, it overlaps with the first paper transported to the paper feed guide rail by the first paper transfer cam group, and enters the next process at the same time.

[0028] In another embodiment of the present invention, the PLC control unit controls the opening of the solenoid valve according to the time difference between the time when the first suction cup group starts to suck paper and when the paper is delivered to the paper guide rail below the first paper transfer cam group, and the time difference between the time when the second suction cup group starts to suck paper and when the paper is delivered to the paper guide rail below the first paper transfer cam group. Specifically, when the time obtained by the test from the time when the first suction cup group starts to suck paper and when the paper is delivered to the paper guide rail below the first paper transfer cam group is 2S, and the time when the second suction cup group starts to suck paper and when the paper is delivered to the paper guide rail below the first paper transfer cam group is 4S, the PLC control unit is set to control the control valve for 2S, and after the air source supplies air to the second suction cup group for 2S, the PLC control unit controls the control valve to open, and the air source supplies air to the first suction cup group.

[0029] The above disclosure is only a preferred embodiment of the present invention, which certainly cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope of the present invention.

Claims

1. A sequential paper suction control system for a sheet-gluing machine, characterized in that: The paper suction control system includes a PLC control unit and an air source, a first paper feeding device and a second paper feeding device controlled by the PLC control unit. The first paper feeding device comprises a first book placing platform, a first suction cup group and a first paper transfer cam group, and the second paper feeding device comprises a second book placing platform, a second suction cup group and a second paper transfer cam group. The first book placing platform and the second book placing platform are arranged in parallel between the frames of the sheet-binding and gluing machine, the first suction cup group is arranged at one side of the first book placing platform, the first paper transfer cam group is arranged below the first suction cup group, the second suction cup group is arranged at one side of the second book placing platform, and the second paper transfer cam group is arranged below the second suction cup group. The air source is connected to the first suction cup group and the second suction cup group respectively, a control valve is arranged between the air source and the first suction cup group, and the control valve is controlled by a PLC control unit.

2. A sequential paper suction control system for a sheet-gluing machine according to claim 1, characterized in that: The air source is a vacuum pump, and the vacuum pump is connected to the first suction cup group and the second suction cup group through an air pipe.

3. A sequential paper suction control system for a sheet-gluing machine according to claim 1, characterized in that: The first paper transfer cam group and the second paper transfer cam group are both provided with a paper gripper assembly.

4. A method for controlling sequential paper suction of a sheet-gluing machine, using a control system as claimed in any one of claims 1 to 3, characterized in that: The control method comprises the following steps: S1, after the PLC control unit controls the air source to be turned on, the air source supplies air to the second suction cup group, and the second suction cup group starts to suck paper. At the same time, the PLC control unit controls the second paper transfer cam group to rotate, and the paper gripper assembly on the second paper transfer cam group grips the paper; S2, the PLC control unit controls the control valve to open, the air source supplies air to the first suction cup group, the first suction cup group starts to suck paper, so that the first suction cup group sucks paper later than the second suction cup group, and at the same time the PLC control unit controls the first paper transfer cam group to rotate, and the paper gripper assembly on the first paper transfer cam group grips paper; S3, the second paper transfer cam group first transports the first book block to the paper feed guide rail, and when the paper feed guide rail continues to transport it to the bottom of the first paper transfer cam group, it overlaps with the first paper transported to the paper feed guide rail by the first paper transfer cam group, and enters the next process at the same time.

5. A sequential paper suction control method for a sheet-gluing machine according to claim 4, characterized in that: After the PLC control unit controls the second paper transfer cam group to complete the paper gripping action and the second paper transfer cam group rotates half a circle, the PLC control unit controls the control valve to open, and the air source supplies air to the first suction cup group.

6. A sequential paper suction control method for a sheet-gluing machine according to claim 4, characterized in that: The PLC control unit controls the opening of the solenoid valve based on the time difference between the start of the paper sucking action of the first suction cup group and the paper being delivered to the paper feed guide rail under the first paper transfer cam group, and the time difference between the start of the paper sucking action of the second suction cup group and the paper being delivered to the paper feed guide rail under the first paper transfer cam group.

Images