CN219339033U

CN219339033U - Cementing device for digital printing

Info

Publication number: CN219339033U
Application number: CN202320324754.7U
Authority: CN
Inventors: 张梦雪
Original assignee: Jining Leader Printing Co ltd
Current assignee: Jining Leader Printing Co ltd
Priority date: 2023-02-27
Filing date: 2023-02-27
Publication date: 2023-07-14
Anticipated expiration: 2033-02-27

Abstract

The utility model relates to the field of paper book binding equipment, in particular to a binding device for digital printing. The device comprises a paper conveying mechanism, a sizing mechanism and a scraping mechanism, wherein the scraping mechanism comprises a scraper arranged at the front side of a sizing wheel and a driving device connected with the scraper, and the driving device can enable the scraper to move from a first position to a second position, and the second position is positioned at the front side of the first position; the scraper is positioned at a first position to scrape the paper volume, the driving device can drive the scraper to move from the first position to a second position after the scraping is completed, and the moving speed a of the scraper in the moving direction of the paper conveying mechanism is greater than the moving speed b of the scraper after the scraping is completed, so that when the scraper moves to the second position, the rear end of the paper volume does not pass through the second position. The utility model provides a glue binding device for digital printing, aiming at the defect that the appearance quality of a finished product is affected by whisker formed by hot melt glue wire drawing during glue scraping of the existing glue binding machine.

Description

Cementing device for digital printing

Technical Field

The utility model relates to the field of paper book binding equipment, in particular to a binding device for digital printing.

Background

When the conventional printing mode is used for order switching, the procedures of plate changing, equipment cleaning, ink adjusting and the like are needed, the period is long, and labor is consumed considerably. The order switching of digital printing is completed instantaneously by replacing the digital manuscript. If the order is a new order or a proofing order, the plate making period can be saved, and the order switching efficiency is far higher than that of the traditional printing mode.

For printed matters needing to be glued, such as books, periodicals and the like, the digital printer is also required to be provided with a high-efficiency gluing machine, so that the instant finishing gluing after the printing is finished is ensured, and the production efficiency is ensured.

The glue binding machine clamps the paper book by using a paper conveying mechanism, then the paper conveying mechanism drives the paper book to glue the lower end of the paper book by using a glue spreading mechanism, then excessive glue at the lower end of the paper book is scraped by using a glue scraping mechanism, and finally the glue binding is completed by wrapping the cover by using a cover packaging device.

The adhesive paper book generally uses hot melt adhesive, which is a plastic adhesive, the physical state of which is changed with the temperature within a certain temperature range, and the chemical characteristics of which are unchanged, and the adhesive paper book is nontoxic and tasteless, belongs to environment-friendly chemical products, and is the most widely used adhesive for adhesive printing products. The hot melt adhesive solid is melted into a liquid state at the temperature of 155-180 ℃ in the adhesive coating mechanism, so that the hot melt adhesive solid can be smoothly coated on a paper book.

However, when the existing glue binding machine is used for carrying out continuous and rapid glue binding, a wiredrawing phenomenon exists when the paper book is moved out of the glue scraping mechanism, the paper book is covered with a cover to form a finished product, but the rear end of the finished product can be seen to have a plurality of whisker-shaped objects due to wiredrawing, so that the appearance quality is very influenced, and the problem needs to be solved.

Disclosure of Invention

The utility model provides a glue binding device for digital printing, aiming at the defect that the appearance quality of a finished product is affected by whisker formed by hot melt glue wire drawing during glue scraping of the existing glue binding machine.

The technical scheme for solving the technical problems is as follows:

the glue binding device for digital printing comprises a paper transporting mechanism, a glue applying mechanism and a glue scraping mechanism, wherein the glue applying mechanism comprises a hot melt glue groove and a glue applying wheel arranged in the hot melt glue groove, the paper transporting mechanism can clamp a paper book and carry the paper book to move from the rear side of the glue applying wheel to the front side of the glue applying wheel,

the scraping mechanism comprises a scraper arranged at the front side of the upper rubber wheel and a driving device connected with the scraper, and the driving device can enable the scraper to move from a first position to a second position, and the second position is positioned at the front side of the first position; the scraper is positioned at a first position to scrape the paper volume, the driving device can drive the scraper to move from the first position to a second position after the scraping is completed, and the moving speed a of the scraper in the moving direction of the paper conveying mechanism is greater than the moving speed b of the scraper after the scraping is completed, so that when the scraper moves to the second position, the rear end of the paper volume does not pass through the second position.

Preferably, the driving device is a telescopic device. Further, the telescopic device is an air cylinder. Further, the left end and the right end of the scraper are respectively connected with an air cylinder arranged along the front-back direction.

In another preferred embodiment, the driving device comprises a motor arranged on the lower side of the scraper and a swing frame connected to the output end of the motor, and one end of the swing frame away from the output end is fixedly connected with the scraper.

Further, the hot melt adhesive tank comprises a heating device.

Further, a rubber stacking roller is arranged above the rubber coating wheel.

Further, a glue baffle is arranged at the rear side of the glue feeding wheel.

The beneficial effects of the utility model are as follows:

according to the scraping mechanism, the scraper is positioned at the first position to scrape the paper volume, the driving device can drive the scraper to move from the first position to the second position after the scraping is completed, the moving speed a of the scraper in the moving direction of the paper conveying mechanism is larger than the moving speed b of the scraper after the scraping is completed by the paper conveying mechanism, when the scraper moves to the second position, the rear end of the paper volume does not pass through the second position, and the wiredrawing generated between the paper volume and the scraper can be pulled to the bottom of the paper volume in the process of rapidly moving the scraper to the second position, so that a finished product has good appearance and no visible whisker after a cover is covered on the paper volume.

Drawings

FIG. 1 is a schematic top view of embodiment 1 of the present utility model;

FIG. 2 is a cross-sectional view of the structure of example 1 with the doctor blade in a first position;

FIG. 3 is a schematic view of the present utility model with the doctor blade of FIG. 2 moved to a second position and showing the positional relationship of the doctor blade to the paper roll;

fig. 4 shows that the distance by which the rear end of the sheet bundle moves backward from the doctor blade is L1, and the distance by which the doctor blade moves from the first position to the second position is L2, L2 being greater than L1, in the same period of time;

FIG. 5 is a schematic top view of embodiment 2 of the present utility model;

FIG. 6 is a schematic partial cross-sectional view of embodiment 2, and showing the doctor blade in a first position and a second position and the corresponding position of the paper book;

in the figure: 1. the hot melt adhesive machine comprises a hot melt adhesive groove, an adhesive feeding wheel, a glue blocking plate, a glue stacking roller, a scraper, a first position, a second position, a cylinder, a motor, a swing frame, an electromagnetic adsorption device, a paper book, L1, a distance between the rear end of the paper book and the first position when the scraper reaches the second position, and L2, a distance between the first position and the second position.

Detailed Description

The principles and features of the present utility model are described below with reference to the drawings, the illustrated embodiments are provided for illustration only and are not intended to limit the scope of the present utility model.

Examples

As shown in fig. 1 to 4, a glue binding apparatus for digital printing of this embodiment includes a paper transporting mechanism, a glue applying mechanism and a glue scraping mechanism.

The glue applying mechanism comprises a hot melt glue tank 1 and a glue applying wheel 2 arranged in the hot melt glue tank 1, and preferably, the hot melt glue tank 1 comprises a heating device which can heat the hot melt glue in the hot melt glue tank 1 to keep the hot melt glue at a stable temperature so as to ensure the stability of glue quality. Further, a glue blocking plate 3 is arranged at the rear side of the glue feeding wheel 2, and a glue stacking roller 4 is arranged above the glue feeding wheel 2. The glue baffle 3 can prevent external impurities from entering the hot melt glue groove 1, and can also prevent incompletely melted glue from moving upwards along with the rotation of the glue applying wheel 2 and adhering to the paper book A. The glue on the glue applying wheel 2 can be piled together by the glue applying roller close to the surface of the glue applying wheel 2, so that the paper book A can be effectively contacted with the glue when passing through the glue applying wheel.

The paper transporting mechanism comprises a pair of clamping plates which are fixedly connected to a linear transmission device, and the clamping plates can clamp the paper book A and carry the paper book A to move from the rear side of the glue feeding wheel 2 to the front side of the glue feeding wheel 2. The linear transmission mechanism can be a chain transmission mechanism, the clamping plate is fixedly connected to a chain, and a driving motor 7 is arranged on a chain wheel during use.

The scraping mechanism comprises a scraper 5 arranged at the front side of the upper rubber wheel 2 and a driving device connected with the scraper 5.

The doctor 5 is a blade extending in the left-right direction and obliquely arranged, and the doctor 5 can scrape excessive glue at the lower end of the paper book A into the hot melt adhesive tank 1.

The drive means are able to move the doctor blade 5 from a first position 5a to a second position 5b, said second position 5b being on the front side of the first position 5 a; the scraper 5 is located at a first position 5a to scrape the paper volume A, the driving device can drive the scraper 5 to move from the first position 5a to a second position 5b after the scraping is completed, and the moving speed a of the scraper 5 in the moving direction of the paper conveying mechanism is greater than the moving speed b of the paper conveying mechanism after the scraping is completed, so that when the scraper 5 moves to the second position 5b, the rear end of the paper volume A does not pass through the second position 5b.

The paper book A is sequentially glued by the gluing mechanism and then is scraped by the scraping mechanism, the scraper 5 is controlled to be positioned at a first position 5a in the process, as shown in fig. 4, the scraping is completed when the rear end of the paper book A passes through the first position 5a, at the moment or after that, the scraper 5 is moved to a second position 5b, the distance between the first position 5a and the second position 5b is L2, and the distance between the rear end of the paper book A and the first position 5a is L1 when the scraper 5 is moved to the second position 5b, and L1 is smaller than L2.

The driving device in this embodiment is a telescopic device. Further, the telescopic device is an air cylinder 6. Specifically, the left and right ends of the scraper 5 are respectively connected with a cylinder 6 arranged along the front and rear directions, and as shown in fig. 1, the cylinders of the two cylinders 6 are respectively fixed at the left and right sides of the hot melt adhesive groove 1.

Examples

As shown in fig. 5 and 6, the present embodiment is different from embodiment 1 in that the driving device of the present embodiment includes a motor 7 provided at the lower side of the scraper 5 and a swing frame 8 connected to the output end of the motor 7, and the end of the swing frame 8 away from the output end is fixedly connected to the scraper 5. Specifically, an electromagnetic adsorption device 9 may be disposed on the outer wall of the hot melt adhesive tank 1 or a fixing component outside the hot melt adhesive tank, an adsorbed portion matched with the electromagnetic adsorption device 9 is disposed on the swing frame 8, the electromagnetic adsorption device 9 is started when the doctor blade 5 is disposed at the first position, so that the doctor blade can be kept stable at the position, and when the motor 7 is started, the power supply of the electromagnetic adsorption device 9 is disconnected, so that the doctor blade 5 can be easily moved. The doctor blade 5 in the embodiment 1 moves along a straight path, and the doctor blade 5 in the present embodiment swings along an arcuate path.

The method of use of the above embodiment is as follows:

the doctor blade 5 is brought to the first position 5a.

Placing the paper book A in a clamping plate of a paper conveying mechanism, tidying and clamping, then starting a driving motor 7 to enable the paper book A to move forward along a straight line, enabling the paper book A to be glued by a gluing mechanism, and scraping excessive glue by a scraper 5.

When the rear end of the paper book a passes through the first position 5a, the scraping is completed, and at this time, or after the paper book a continues to move forward for a certain distance, the driving device is started to drive the scraper 5 to move from the first position 5a to the second position 5b, and the moving speed a of the scraper 5 in the moving direction of the paper transporting mechanism is greater than the moving speed b of the paper book a, so that the distance L2 between the first position 5a and the second position 5b is greater than the distance L1 between the rear end of the paper book a and the first position 5a, that is, when the scraper 5 moves to the second position 5b, the rear end of the paper book a does not pass through the second position 5b.

Thus, the wire drawing generated between the paper book A and the scraper 5 can be pulled to the bottom of the paper book A along with the process that the scraper 5 moves to the second position 5b rapidly, and the finished product has good appearance and no visible whisker after the paper book A is covered with the cover.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above description will be apparent to those of skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.

Claims

1. The utility model provides a glue binding device for digital printing, includes fortune paper mechanism, rubberizing mechanism and frictioning mechanism, rubberizing mechanism includes hot melt adhesive groove (1) and sets up rubberizing wheel (2) in hot melt adhesive groove (1), and fortune paper mechanism can press from both sides tight paper book (A) and carry paper book (A) to remove to the front side of rubberizing wheel (2) from the rear side of rubberizing wheel (2), its characterized in that,

the scraping mechanism comprises a scraper (5) arranged at the front side of the upper glue wheel (2) and a driving device connected with the scraper (5), wherein the driving device can enable the scraper (5) to move from a first position (5 a) to a second position (5 b), and the second position (5 b) is positioned at the front side of the first position (5 a); the scraper (5) is positioned at a first position (5 a) to scrape the paper book (A), the driving device can drive the scraper (5) to move from the first position (5 a) to a second position (5 b) after the scraping is completed, and the moving speed a of the scraper (5) in the moving direction of the paper conveying mechanism is greater than the moving speed b of the scraper (5) after the scraping is completed, so that when the scraper (5) moves to the second position (5 b), the rear end of the paper book (A) does not pass through the second position (5 b).

2. A glue device for digital printing according to claim 1, wherein the drive means is a telescopic device.

3. A glue unit for digital printing according to claim 2, characterized in that the telescopic means are cylinders (6).

4. A glue device for digital printing according to claim 3, wherein the left and right ends of the doctor blade (5) are each connected with a cylinder (6) provided in the front-rear direction.

5. A glue device for digital printing according to claim 1, characterized in that the driving means comprise a motor (7) arranged at the lower side of the doctor blade (5) and a swinging frame (8) connected to the output end of the motor (7), wherein the end of the swinging frame (8) far away from the output end is fixedly connected with the doctor blade (5).

6. A glue unit for digital printing according to claim 1, characterized in that the hot melt glue tank (1) comprises heating means.

7. A glue binding apparatus for digital printing according to claim 6, characterized in that a glue stacking roller (4) is arranged above the glue applying wheel (2).

8. A glue device for digital printing according to claim 7, characterized in that the rear side of the glue applying wheel (2) is provided with a glue blocking plate (3).