CN218619425U - Jumping tractor and printing production line - Google Patents
Jumping tractor and printing production line Download PDFInfo
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- CN218619425U CN218619425U CN202222761951.3U CN202222761951U CN218619425U CN 218619425 U CN218619425 U CN 218619425U CN 202222761951 U CN202222761951 U CN 202222761951U CN 218619425 U CN218619425 U CN 218619425U
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Abstract
The utility model discloses a jump tractor, include: main draw gear, vice draw gear and jump step drive mechanism. The main traction device and the auxiliary traction device are both provided with traction conveying mechanisms. The traction conveying mechanism comprises a traction roller. The jumping driving component is used for driving the main traction device to move back and forth relative to the auxiliary traction device. The utility model discloses a carry over pinch rolls of jump tractor need not to overturn and just can realize the jump and pull.
Description
Technical Field
The utility model relates to a printing production facility technical field, in particular to jump step tractor and printing production line.
Background
With the increasing printing requirements of people on printed products such as packing boxes, packing boxes and the like, the printing efficiency and the printing precision of the printing machine are increased. At present, a printing production line is generally composed of an unreeling machine, a printing machine, a reeling machine and the like.
For web printing, intermittent web presses have become an important means and approach for high precision, low cost printing. The intermittent web-fed printing press needs to adopt a feeding mode of intermittent feeding and a little more material pouring, and the reason is that the offset plate in the printing color group is wrapped on the printing cylinder, and the offset plate wrapped on the printing cylinder is determined by the fixing mode of the offset plate and is bound to have an empty notch so as not to completely wrap the roller surface. Therefore, in order to minimize the waste of blank gaps on the paper caused by the gap parts of the offset plate, intermittent material return is needed to compensate the gap blank.
In intermittent printing, the front and rear connecting lines of the printing machine are butted through a jumping tractor, and the front and rear unreeling and reeling of the printing machine can realize non-stop production while realizing intermittent feeding. In the jumping traction machine in the prior art, the traction motor drives the traction roller to rotate forward and backward, so that the feeding and the discharging of roll paper are realized. In the jumping step traction machine, the traction motor needs to rotate continuously and alternately in a positive and negative mode and stop accurately, and the requirement on the traction motor is extremely high. In actual work, the rotational inertia of the traction roller is large, and particularly when the printing width is large, the cost of the traction motor is too high, but the problem of short service life cannot be solved.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a jump tractor to solve one or more technical problem that exist among the prior art, provide a profitable selection or creation condition at least.
The technical scheme adopted for solving the technical problems is as follows:
a jump tractor comprising: the main traction device, the auxiliary traction device and the jumping drive component; the main traction device and the auxiliary traction device are both provided with traction conveying mechanisms, each traction conveying mechanism comprises a traction roller which axially extends along the left-right direction, and the step jump driving component is provided with a step jump driving end which is in transmission connection with the main traction device and enables the main traction device to move back and forth relative to the auxiliary traction device.
The utility model provides a jump tractor has following beneficial effect at least: the printing stock can be drawn and conveyed through the main traction device and the auxiliary traction device, the jumping driving member can drive the main traction device to move back and forth relative to the auxiliary traction device, the actual speed of the printing stock can be influenced by the back and forth movement speed of the main traction device and the linear speed of the traction roller of the main traction device, and the traction roller can realize jumping traction without reversing.
As a further improvement of the above technical solution, the traction conveying mechanism further comprises a traction frame and a traction driving unit, the traction roller is rotatably mounted on the traction frame, and the traction driving unit is used for driving the traction roller to rotate. Through the technical scheme, the traction frame provides an installation support and a connection foundation for the traction roller, and the traction driving unit can drive the traction roller to rotate, so that the traction and the conveying of printing stocks are realized.
As a further improvement of the above technical solution, the main traction device is disposed above the auxiliary traction device, the traction frame has two vertical plates disposed in pairs at left and right, and the traction roller is rotatably disposed between the two vertical plates. Through the technical scheme, the main traction device is arranged above the auxiliary traction device, the traction frames of the main traction device and the auxiliary traction device are arranged up and down, and the traction frame of the main traction device can be erected on the upper side of the traction frame of the auxiliary traction device.
As a further improvement of the above technical solution, the number of the jumping driving members is two, and the two jumping driving members are arranged in pairs between the traction frames of the main traction device and the auxiliary traction device. Through the technical scheme, the two jumping driving components simultaneously drive the left side and the right side of the main traction device to synchronously translate, so that the main traction device can stably move.
As a further improvement of the technical scheme, the traction conveying mechanism further comprises a pressing roller, the pressing roller and the traction roller are arranged in parallel, and the pressing roller is elastically abutted against the outer side of the traction roller. Through the technical scheme, the compression roller can compress the printing stock on the traction roller, so that the traction failure of the traction roller to the printing stock is avoided to cause abnormity.
As a further improvement of the technical scheme, an elastic swing part is arranged on the traction frame, the pressing roller is rotatably installed on the elastic swing part, the elastic swing part is provided with a rotating end and a connecting end, the rotating end and the connecting end are respectively arranged on two sides of the pressing roller, the rotating end is rotatably hinged with the traction frame, and the connecting end is elastically connected with the traction frame. Through the technical scheme, the elastic swing part can elastically swing relative to the traction frame, so that the pressing roller is driven to be elastically pressed on the traction roller.
As a further improvement of the technical scheme, the auxiliary traction device is further provided with a tensioning roller and a tensioning sliding seat, the tensioning sliding seat is connected with the traction frame in a sliding mode to enable the tensioning sliding seat to move up and down relative to the traction frame, and the tensioning roller is rotatably installed on the tensioning sliding seat. Through the technical scheme, the printing stock between main carry over pinch rolls and the vice carry over pinch rolls is around locating the tensioning roller, tensioning roller and tensioning slide can be with the printing stock tensioning under the action of gravity.
The utility model also provides a printing production line, include: the step jump tractor comprises a printing machine and two step jump tractors, wherein the two step jump tractors are respectively arranged on the front side and the rear side of the printing machine.
The utility model provides a printing production line has following beneficial effect at least: the two jumping tractors act synchronously, and can drive the two main traction devices to move backwards while conveying the printing stock, so that the printing stock between the two jumping tractors can realize jumping traction.
The utility model also provides a printing production leap traction method, carry out leap through the stock of two foretell leap tractors between to the two and pull the transport, specifically include following step:
respectively taking the traction rollers of the main traction device and the auxiliary traction device as a main traction roller and an auxiliary traction roller, wherein the traction speed of the auxiliary traction roller is kept unchanged;
in the jumping process, the jumping driving component drives the main traction device to move backwards;
in the printing process, the jumping driving component drives the main traction device to move forwards, and the sum of the traction speed of the main traction roller and the movement speed of the main traction device is consistent with the traction speed of the auxiliary traction roller.
Drawings
The present invention will be further explained with reference to the drawings and examples;
fig. 1 is a schematic perspective view of an embodiment of a jumping tractor according to the present invention;
fig. 2 is a schematic perspective view of an embodiment of the jumping step traction machine provided by the present invention;
fig. 3 is a schematic perspective exploded view of an embodiment of the jumping step traction machine provided by the present invention;
FIG. 4 is a side cross-sectional view of one embodiment of the jump tractor provided by the present invention;
fig. 5 is a side sectional view of an embodiment of a printing line provided by the present invention.
In the figure: 10. a main traction device; 20. an auxiliary traction device; 30. a jump drive member; 40. a base; 100. a traction frame; 110. a vertical plate; 120. a connecting rod; 200. a main pulling roll; 300. a secondary pull roll; 400. a traction drive unit; 500. a pressing member; 510. an elastic pendulum; 511. a rotating end; 512. a connecting end; 520. a pressure roller; 600. a tension member; 610. tensioning the slide; 620. and (5) tensioning the rollers.
Detailed Description
This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, if words such as "a plurality" are used, the meaning is one or more, the meaning of a plurality of words is two or more, and the meaning of more than, less than, more than, etc. is understood as not including the number, and the meaning of more than, less than, more than, etc. is understood as including the number.
In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.
Referring to fig. 1 to 5, the jumping step traction machine of the present invention is implemented as follows:
a jump tractor comprising: main traction device 10, secondary traction device 20, jump drive member 30, and base 40.
The auxiliary traction device 20 is provided on the upper side of the base 40. The main traction device 10 is provided above the sub traction device 20. The main traction device 10 and the auxiliary traction device 20 are connected in a sliding manner along the front-back direction. The jump drive member 30 is provided with a jump drive end which is in transmission connection with the main traction device 10 and enables the main traction device 10 to move back and forth relative to the auxiliary traction device 20.
The main traction device 10 and the auxiliary traction device 20 are both provided with traction conveying mechanisms.
The traction conveying mechanism comprises: a traction frame 100, traction rollers, and a traction drive unit 400.
The axial direction of the pulling roll extends along the left-right direction, and the pulling roll is rotatably installed on the pulling frame 100. The traction drive unit 400 is in driving connection with the traction roller to rotate the traction roller relative to the traction frame 100.
In this embodiment, the traction frame 100 includes a vertical plate 110 and a connecting rod 120. The number of the vertical plates 110 is two, and the vertical plates are arranged in pairs from left to right. The connecting rod 120 has a plurality of pieces. The connecting rods 120 are disposed between the two vertical plates 110. The left end and the right end of the connecting rod 120 are respectively fixedly connected with the two vertical plates 110.
In the auxiliary traction device 20, the traction frame 100 is fixedly mounted on the base 40, and the two vertical plates 110 of the traction frame 100 are respectively fixedly mounted on the upper side of the base 40. The base 40 can provide a mounting and fixing basis for the auxiliary traction device 20, and the auxiliary traction device 20 is prevented from shaking when the main traction device 10 moves back and forth, so that the accuracy of the front and back jumping is not affected.
In order to reduce the weight of the main traction device 10, reduce inertia, and avoid the step jump driving member 30 from being overloaded, the traction frame 100 of the main traction device 10 is made of an aluminum alloy, and the vertical plate 110 and the connecting rod 120 are made of an aluminum alloy.
The pulling roll is rotatably arranged between the two vertical plates 110. The traction drive unit 400 of the main traction device 10 employs a servo motor in consideration of convenience in controlling the speed and accuracy of conveyance. In the secondary traction device 20, or in some other embodiments, the traction drive unit 400 may be a rotary drive element such as a stepper motor or a pneumatic motor.
The traction conveying mechanism further comprises a pressing member 500.
The pressing member 500 includes: an elastic swing piece 510, and a pinch roller 520. The axial direction of the pinch roller 520 extends in the left-right direction. The pressing roller 520 is arranged between the two vertical plates 110 and is arranged in parallel with the traction roller.
There are two of the elastic swing portions 510. The two elastic swing portions 510 are respectively disposed at the left and right ends of the pressing roller 520. The two elastic swing parts 510 are respectively disposed on opposite sides of the two vertical plates 110 and rotatably connected to the corresponding vertical plates 110.
The spring rocker 510 has a rotation end 511, a mounting portion and a connection end 512. The left and right ends of the pinch roller 520 are rotatably mounted to the mounting portions of the two elastic swing members 510, respectively. The rotating end 511 is rotatably connected with the vertical plate 110. The connecting end 512 is elastically connected to the traction frame 100, so that the elastic swing member 510 swings toward the direction of approaching the traction roller, and the pressing roller 520 elastically abuts against the outer side of the traction roller.
In the main traction apparatus 10 of this embodiment, the pinch rollers 520 are disposed on both upper and lower sides of the traction roller. In the sub-traction device 20 of the present embodiment, the pinch roller 520 is provided on the upper side of the traction roller.
The rotation end 511 and the connection end 512 of the spring swing member 510 are respectively provided at the front and rear sides of the drawing roller. And air cylinders connected with the traction frame 100 are arranged on the upper side and the lower side of the connecting end 512. The cylinders at the upper and lower sides of the connection end 512 can drive the connection end 512 to move up and down relative to the traction frame 100, so that the elastic swing part 510 can swing around the rotation end 511, and the pressing roller 520 installed on the elastic swing part 510 can be close to or far away from the traction roller. In particular, the air cylinder for pressing the pressing roller 520 against the outside of the drawing roller is an air bag type air cylinder. The air bag type cylinder has the advantages of low design height, no need of switching devices on two sides, no friction, good fatigue performance, high working safety and the like.
The number of the jumping drive members 30 is two. The two jumping driving members 30 are arranged in a left-right pair between the traction frames 100 of the main traction device 10 and the auxiliary traction device 20.
In the present embodiment, the jumping drive member 30 is a linear module disposed in a front-rear direction. The linear module is called a linear module, a linear sliding table and the like, integrates a linear slide rail and a ball screw, and has high movement speed and high repeated positioning precision. In the jumping driving member 30 of this embodiment, the servo motor drives the linear module to drive the main traction device 10 to move back and forth relative to the auxiliary traction device 20.
The two jumping driving members 30 are respectively provided between the traction frame 100 of the main traction apparatus 10 and the traction frame 100 of the sub traction apparatus 20. The vertical plates 110 of the two traction frames 100 are respectively disposed at the upper and lower sides of the jumping driving member 30. The left and right jumping drive members 30 are operated in synchronization so that the main traction device 10 can be translated in the front-rear direction with respect to the auxiliary traction device 20.
The drawing roll in the primary drawing device 10 is used as a primary drawing roll 200, and the drawing roll in the secondary drawing device 20 is used as a secondary drawing roll 300.
In order to avoid that the printing material is excessively tensioned or loosened due to the change of the distance between the primary traction device 200 and the secondary traction device 300 when the primary traction device 10 moves back and forth relative to the secondary traction device 20, a tensioning member 600 for tensioning the printing material is further arranged between the primary traction device 10 and the secondary traction device 20.
In this embodiment, the tension member 600 is provided to the secondary traction device 20. The tension member 600 includes: a tension slide 610 and a tension roller 620. The tensioning sliders 610 are arranged in pairs between the two vertical plates 110 of the secondary traction device 20. The tension slider 610 is slidably coupled to the traction frame 100 of the secondary traction device 20 in an up-down oblique direction. Both ends of the tension roller 620 are rotatably connected to the two tension sliders 610 provided in pair, respectively. The printing material between the primary traction roller 200 and the secondary traction roller 300 is wound around the tension roller 620, and the tension roller 620 and the tension sliding seat 610 can tension the printing material under the action of gravity. When the main traction roller 200 moves back and forth relative to the secondary traction roller 300, the distance between the main traction roller 200 and the secondary traction roller 300 changes, and the tension roller 620 and the tension sliding seat 610 can move up and down to tension the printing material all the time.
In a further embodiment, the tension slider 610 may be elastically connected to the traction frame 100 of the secondary traction device 20 through a spring, and the tension slider 610 is pressed against the tension slider 610 through an elastic force, so that the tension roller 620 can support the printing material between the primary traction roller 200 and the secondary traction roller 300.
The utility model also provides a printing production line. This printing production line includes: a printing press and a jump tractor. The number of the jumping tractors is two. The two jumping tractors are respectively arranged on the front side and the rear side of the printing machine.
In the printing line, the embodiments of the skip tractor can be made with reference to the various examples of skip tractors listed above, and are not described here.
The printing press includes a plate cylinder, a blanket cylinder, and an impression cylinder. And the printing stock between the two jumping tractors is arranged between the rubber roller and the impression roller in a penetrating way. The plate cylinder and the rubber cylinder are in rolling contact with each other and rotate synchronously. The plate cylinder and the rubber cylinder are provided with jump ports.
The number of printers can be set according to the printing requirements. The printing machines are arranged between the two jumping tractors. The spacing between the plurality of printing presses is set according to the length of the printing plate.
And in actual work, the two jumping tractors drive the printing stock to convey. And during normal printing, the conveying speed of the printing stock is consistent with the peripheral linear speed of the rubber roller. When the jump mouth rotates to the position of the impression cylinder, the jump driving member 30 drives the main traction device 10 to move backward relative to the auxiliary traction device 20, and the conveying speed of the printing stock is the vector sum of the linear speeds of the main traction device 10 and the main traction roller 200.
To the utility model provides a jump traction machine, its concrete jump traction method in the printing production process is: and carrying out skip traction and conveying on the printing stock in the printing machine between the two skip tractors.
The drawing speed of the secondary drawing roll 300 is kept constant. When a jump is needed, the jump driving member 30 drives the main traction apparatus 10 to move backward. During normal printing, the leapfrog driving member 30 drives the main traction device 10 to return forward.
The sum of the drawing speed of the main drawing roll 200 and the moving speed of the main drawing device 10 is consistent with the drawing speed of the auxiliary drawing roll 300.
Specifically, the method comprises the following steps: at printing line speed V of the printing press 0 The peripheral linear velocity of the main traction roller 200 is V 1 The speed of the front and back movement of the main traction device 10 is V 2 . The peripheral linear velocity of the auxiliary traction roller 300 is always kept at V 0 Remain unchanged.
By twoThe absolute speed of the printing stock between the jump tractors is V 3 Has a V 3 ＝V 1 +V 2 . In the above formula, V 3 Is a V 1 And V 2 The vector sum of (1). V when the main traction device 10 moves forward relative to the auxiliary traction device 20 1 And V 2 The directions are consistent. V when the main draft gear 10 moves backward relative to the auxiliary draft gear 20 1 And V 2 The direction is opposite.
If the speed V of the backward movement of the main traction means 10 is low 2 Equal to the traction speed V of the main traction roller 200 1 The printing stock between the two jump tractors is kept static relative to the printing machine during the jumping process. Since the total length of the printing plate on the plate cylinder is not always capable of covering the entire peripheral surface of the printing cylinder, and the gap between two printing positions is increased when the main traction roller 200 rotates at an accelerated or decelerated speed from a constant speed, this arrangement is suitable for the case of printing in which a gap is required.
If the speed V of the backward movement of the main traction means 10 is low 2 Greater than the traction speed V of the main traction roller 200 1 ，V 3 And the printing stock between the two jumping tractors moves backwards relative to the printing machine in the jumping process. The distance that the substrate moves backward can offset the gap generated when the main traction roller 200 changes from uniform delivery to acceleration or deceleration rotation. Similarly, under the condition that the printing stock is displaced backwards enough, blank sections on the plate cylinder can be offset, so that the pattern positions printed twice can be connected end to end or overlapped to some extent, and seamless continuous printing is realized.
If the speed V of the backward movement of the main traction means 10 is low 2 Less than the pulling speed V of the main pulling roll 200 1 ，V 3 And forwards conveying the printing stock between the two jumping tractors forwards in the jumping process. The distance between two printing positions can be increased by moving the printing stock forwards, and the printing machine is suitable for the condition that printing is required to be carried out at a certain distance.
The jumping process is completed in the process that the jumping port rotates to correspond to the impression cylinder, and after the jumping is completed, the rubber cylinder and the impression cylinderThe peripheries of the impression cylinders abut against each other, at which time V 3 ＝V 0 And the printing stock is conveyed at a constant speed for printing. In the process, the jump drive member 30 drives the main traction device 10 to move forward and reset, and V is at this time 1 And V 2 Direction of coincidence, V 1 Less than V 3 And V 0 . The main traction device 10 stops after the reset is completed, and V is carried out at the moment 2 ＝0，V 1 ＝V 3 ＝V 0 And until the next jump is carried out. Repeating the steps, and realizing the jumping traction conveying of printing production. The front and back connecting lines of the printing process do not need to be repeatedly conveyed in a forward and reverse mode, and the production can be realized without stopping.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and variations may be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the claims and their equivalents.
Claims (8)
1. The utility model provides a jump tractor which characterized in that: the method comprises the following steps: a main traction device (10), an auxiliary traction device (20) and a jumping drive member (30);
the main traction device (10) and the auxiliary traction device (20) are respectively provided with a traction conveying mechanism, each traction conveying mechanism comprises a traction roller extending from left to right, and the jumping driving component (30) is used for driving the main traction device (10) to move back and forth relative to the auxiliary traction device (20).
2. The jump tractor of claim 1, wherein: the traction conveying mechanism further comprises a traction frame (100) and a traction driving unit (400), the traction roller is rotatably installed on the traction frame (100), and the traction driving unit (400) is used for driving the traction roller to rotate.
3. The jump tractor of claim 2, wherein: the main traction device (10) is arranged above the auxiliary traction device (20), the traction frame (100) is provided with two vertical plates (110) which are arranged in pair from left to right, and the traction roller is rotatably arranged between the two vertical plates (110).
4. The jump tractor of claim 3, wherein: the number of the jumping driving members (30) is two, and the two jumping driving members (30) are arranged between the traction frames (100) of the main traction device (10) and the auxiliary traction device (20) in a left-right pair.
5. The jump tractor of claim 2, wherein: the traction conveying mechanism further comprises a pressing roller (520), the pressing roller (520) and the traction roller are arranged in parallel, and the pressing roller (520) is elastically abutted against the outer side of the traction roller.
6. The jump tractor of claim 5, wherein: be equipped with elasticity goods of furniture for display rather than for use (510) on traction frame (100), pinch roller (520) rotate install in elasticity goods of furniture for display rather than for use (510), elasticity goods of furniture for display rather than for use (510) have rotation end (511) and link (512), rotation end (511) and link (512) are located respectively the both sides of pinch roller (520), rotation end (511) with traction frame (100) rotate articulated, link (512) with traction frame (100) elastic connection.
7. The jump tractor of claim 2, wherein: the auxiliary traction device (20) is further provided with a tension roller (620) and a tension sliding seat (610), the tension sliding seat (610) is connected with the traction frame (100) in a sliding mode, the tension sliding seat (610) can move up and down relative to the traction frame (100), and the tension roller (620) is rotatably installed on the tension sliding seat (610).
8. A printing production line is characterized in that: the method comprises the following steps: a printing press and two jump tractors according to any one of claims 1 to 7, the two jump tractors being respectively arranged on the front and rear sides of the printing press.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222761951.3U CN218619425U (en) | 2022-10-19 | 2022-10-19 | Jumping tractor and printing production line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222761951.3U CN218619425U (en) | 2022-10-19 | 2022-10-19 | Jumping tractor and printing production line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218619425U true CN218619425U (en) | 2023-03-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222761951.3U Active CN218619425U (en) | 2022-10-19 | 2022-10-19 | Jumping tractor and printing production line |
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| Country | Link |
|---|---|
| CN (1) | CN218619425U (en) |
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2022
- 2022-10-19 CN CN202222761951.3U patent/CN218619425U/en active Active
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