A printing machine double worm gear worm reel rubber roller
Patent Information
- Application Number
- CN202522583774.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-05
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-12-05
AI Technical Summary
The existing rubber rollers of printing presses use a single-sided tightening device for the blanket, which makes the roll easy to twist and deform, resulting in inconsistent blanket tightness, uneven force during printing, high noise, poor printing quality, and easy ink streaks.
A double worm gear winding mechanism is adopted, with worm gears and worms set at both ends of the rubber roller to achieve double-sided tightening and ensure uniform coverage of the rubber sheet. The front and rear worm gears are meshed with the front and rear worms and are respectively installed at the front and rear ends of the rubber roller. The half-set is connected by the front and rear connecting bolts to form a winding shaft that can rotate counterclockwise, ensuring uniform coverage of the rubber sheet.
The double-sided tightening mechanism prevents roll deformation, ensures uniform blanket coverage, reduces impact and noise during printing, improves printing quality, and reduces ink streaks on printed materials.
Smart Images
Figure CN224928679U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of printing press technology and relates to a rubber roller for a printing press with a double worm gear and worm shaft. Background Technology
[0002] The existing printing presses use a single-sided tightening mechanism for the rubber blanket tensioning device. Because of this single-sided tightening and the relatively long length of the roller, the roller is prone to twisting and deformation. This results in inconsistent tightness of the rubber blanket on the rubber roller, leading to uneven stress during printing, higher noise levels, lower print quality, and the formation of ink streaks on the printed material. Summary of the Invention
[0003] The purpose of this invention is to provide a rubber roller for a printing press with a double worm gear and worm shaft, which can solve the above-mentioned problems and improve printing quality.
[0004] According to the technical solution provided by this utility model: a printing press double worm gear and worm shaft rubber roller includes a rubber roller, the middle of which is a wrapping part. A rear roller pillow and a front roller pillow are respectively provided on both sides of the wrapping part. A rear sleeve and a front sleeve are respectively provided on the outer side of the rear roller pillow and the front roller pillow. A roll shaft is rotatably installed in the front sleeve, the front roller pillow, the wrapping part, the rear roller pillow, and the rear sleeve. A front worm wheel and a front worm are rotatably provided in the front sleeve. The front worm wheel is installed at the front end of the roll shaft. A rear worm wheel and a rear worm are rotatably provided in the rear sleeve. The rear worm wheel is installed at the rear end of the roll shaft. The outer ends of the rear worm and the front worm protrude from the rear sleeve and the front sleeve respectively and are provided with a spiral groove. A roll shaft hole is provided in the wrapping part. A cloth groove is provided on the outer periphery of the wrapping part. The roll shaft hole is connected to the cloth groove. A roll shaft groove is provided on the roll shaft.
[0005] As a further improvement of this utility model, the front sleeve is composed of a front upper half sleeve and a front lower half sleeve connected by a front connecting bolt. The front worm gear and the front worm are located in the front upper half sleeve, and the front lower half sleeve is connected to the front roller rest by a second axial bolt.
[0006] As a further improvement of this utility model, the upper front half is provided with a front worm wheel hole and a front worm hole; the front worm wheel and the front end of the spool are located in the front worm wheel hole, and the front worm wheel drives and connects to the front end of the spool; the front worm is located in the front worm hole, and the outer end of the front worm is provided with a hexagonal groove.
[0007] As a further improvement of this utility model, the rear sleeve is composed of a rear upper half sleeve and a rear lower half sleeve connected by a rear connecting bolt. The rear worm gear and the rear worm are located in the rear upper half sleeve, and the rear lower half sleeve is connected to the rear roller rest by a second axial bolt.
[0008] As a further improvement of this utility model, the upper rear half is provided with a rear worm gear hole and a rear worm hole; the rear worm gear and the rear end of the spool are located in the rear worm gear hole, and the rear worm gear drives and connects to the rear end of the spool; the rear worm is located in the rear worm hole, and the outer end of the rear worm is provided with a hexagonal groove.
[0009] As a further improvement of this utility model, both the roll hole and the cloth groove are axially arranged on the wrapping part, and the roll groove is also axially arranged on the roll.
[0010] As a further improvement of this utility model, a front bushing and a rear bushing are respectively provided between the spool and the front roller rest and the rear roller rest. The positive and progressive effects of this utility model are as follows: This invention incorporates a worm gear mechanism on the rubber roller that allows for simultaneous tightening of the rolls at both ends. This ensures that the rolls do not deform during tightening, allowing the rubber blanket to evenly cover the rubber roller. This reduces impact force, noise, and ink streaks on printed materials during printing, thereby improving print quality. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the structure of this utility model.
[0012] Figure 2 for Figure 1 AA section view in the image.
[0013] Figure 3 for Figure 1 BB section view in the middle.
[0014] Figure 4 for Figure 1 CC section view in the image.
[0015] Figures 1-4 The components include a rubber roller 1, a lower rear half sleeve 2, a roller 3, an upper rear half sleeve 4, a rear worm gear 5, a rear roller rest 6, a rear bushing 7, a front bushing 8, a front roller rest 9, a front worm gear 10, an upper front half sleeve 11, a lower front half sleeve 12, a rear worm 13, a rear connecting bolt 14, a front worm 15, a front connecting bolt 16, a first axial bolt 17, and a second axial bolt 18. Detailed Implementation
[0016] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.
[0017] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.
[0018] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this utility model described herein. Furthermore, terms such as "comprising" and "having" mean that in addition to those already listed in "comprising" and "having," other unlisted contents may also be included; for example, a process, method, system, product, or device may include a series of steps or units, not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products, or devices.
[0019] Due to the angle of the drawing, some parts may not be drawn, but their positions and connections can be understood from the text descriptions.
[0020] like Figures 1-4 As shown, this utility model is a rubber roller with a double worm gear and worm shaft for a printing press. It includes a rubber roller 1, with a wrapping section 1-1 in the middle. A rear roller pillow 6 and a front roller pillow 9 are respectively provided on both sides of the wrapping section 1-1. A rear sleeve and a front sleeve are respectively provided on the outer sides of the rear roller pillow 6 and the front roller pillow 9. A roller shaft 3 is rotatably mounted in the front sleeve, the front roller pillow 9, the wrapping section 1-1, the rear roller pillow 6, and the rear sleeve. A meshing front worm gear 10 and a front worm are rotatably mounted in the front sleeve. 15. The front worm gear 10 is installed at the front end of the spool 3. The rear sleeve is rotatably provided with a meshing rear worm gear 5 and a rear worm 13. The rear worm gear 5 is installed at the rear end of the spool 3. The outer ends of the rear worm 13 and the front worm 15 are exposed in the rear sleeve and the front sleeve respectively and are provided with a spiral groove. The wrapping part 1-1 is provided with a spool hole 1-11. The outer periphery of the wrapping part 1-1 is provided with a cloth groove 1-12. The spool hole 1-11 is connected to the cloth groove 1-12. The spool 3 is provided with a spool groove.
[0021] like Figure 4 As shown, the front sleeve is composed of a front upper half sleeve 11 connected by a front connecting bolt 16 and a front lower half sleeve 12. The front worm gear 10 and the front worm 15 are located in the front upper half sleeve 11, and the front lower half sleeve 12 is connected to the front roller pillow 9 by a second axial bolt 18.
[0022] like Figure 3 As shown, the upper front half 11 is provided with a front worm wheel hole and a front worm hole; the front worm wheel 10 and the front end of the reel 3 are located in the front worm wheel hole, and the front worm wheel 10 is sleeved on the front end of the reel 3 through a transmission structure such as a spline structure and a keyway structure; the front worm 15 is located in the front worm hole, and the outer end of the front worm 15 is provided with a hexagonal groove to facilitate the wrench to be inserted into the front worm hole to rotate the front worm 15.
[0023] The rear sleeve is composed of a rear upper half sleeve 4 connected by a rear connecting bolt 14 and a rear lower half sleeve 2. The rear worm gear 5 and the rear worm 13 are located in the rear upper half sleeve 4, and the rear lower half sleeve 2 is connected to the rear roller pillow 9 by a second axial bolt 18.
[0024] The upper half of the rear set 4 is provided with a rear worm gear hole and a rear worm shaft hole; the rear worm gear 5 and the rear end of the reel 3 are located in the rear worm gear hole, and the rear worm gear 5 is sleeved on the rear end of the reel 3 through a transmission structure such as a spline structure and a keyway structure; the rear worm 13 is located in the rear worm shaft hole, and the outer end of the rear worm 13 is provided with a hexagonal groove to facilitate the wrench to be inserted into the rear worm shaft hole to rotate the rear worm 13.
[0025] The rear roller pillow 6 and the front roller pillow 9 are connected to the wrapping part 1-1 by the first axial bolt 17.
[0026] like Figure 2 As shown, the roller hole 1-11 and the cloth groove 1-12 are both axially arranged on the wrapping part 1-1, and the roller groove is also axially arranged on the roller 3.
[0027] The rubber sheet 19 is connected to a positioning strip 19-1 and a positioning piece 19-2 at both ends; the positioning strip 19-1 is located in the cloth groove 1-12 on the side of the roll 3; the positioning piece 19-2 is embedded in the roll groove.
[0028] A front bushing 8 and a rear bushing 7 are respectively provided between the roll 3 and the front roller rest 9 and the rear roller rest 6 to reduce the wear of the rear roller rest 6 and the front roller rest 9.
[0029] The working process of this utility model is as follows: Positioning strip 19-1 is embedded in fabric groove 1-12; the roll groove faces fabric groove 1-12, positioning rod 9-2 is embedded in the roll groove, and the roll 3 can be rotated counterclockwise by simultaneously rotating the rear worm 13 and the front worm 15 with an Allen wrench. Positioning strip 19-1 remains stationary, and positioning rod 9-2 tightens the rubber sheet 19 as the roll 3 rotates counterclockwise, ensuring that the rubber sheet 19 tightly and evenly covers the wrapping part 1-1 on the rubber roller 1.
[0030] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of this utility model, and the utility model is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of this utility model, and these modifications and improvements are also considered to be within the protection scope of this utility model.
Claims
1. A rubber roller for a printing press with a double worm gear and worm shaft, comprising a rubber roller (1), wherein the middle part of the rubber roller (1) is a wrapping part (1-1), characterized in that, The wrapping section (1-1) is provided with a rear roller pillow (6) and a front roller pillow (9) on both sides respectively. The rear roller pillow (6) and the front roller pillow (9) are respectively provided with a rear sleeve and a front sleeve on their outer sides. The front sleeve, the front roller pillow (9), the wrapping section (1-1), the rear roller pillow (6), and the rear sleeve are rotatably mounted with a roller shaft (3). The front sleeve is rotatably provided with a meshing front worm gear (10) and a front worm (15). The front worm gear (10) is installed at the front end of the roller shaft (3). The rear sleeve is rotatably provided with a meshing front worm gear (10) and a front worm (15). The rear worm gear (5) and the rear worm (13) mesh with each other. The rear worm gear (5) is installed at the rear end of the spool (3). The outer ends of the rear worm (13) and the front worm (15) are exposed to the rear sleeve and the front sleeve respectively and are provided with a spiral groove. The wrapping part (1-1) is provided with a spool hole (1-11). The wrapping part (1-1) is provided with a cloth groove (1-12) on its outer periphery. The spool hole (1-11) is connected to the cloth groove (1-12). The spool (3) is provided with a spool groove.
2. The printing press double worm gear and worm shaft rubber roller as described in claim 1, characterized in that, The front sleeve consists of an upper front sleeve (11) connected by a front connecting bolt (16) and a lower front sleeve (12). The front worm gear (10) and the front worm (15) are located in the upper front sleeve (11), and the lower front sleeve (12) is connected to the front roller pillow (9) by a second axial bolt (18).
3. The printing press double worm gear and worm shaft rubber roller as described in claim 2, characterized in that, The upper front half (11) is provided with a front worm wheel hole and a front worm hole; the front front worm wheel (10) and the front end of the spool (3) are located in the front worm wheel hole, and the front worm wheel (10) is connected to the front end of the spool (3); the front worm (15) is located in the front worm hole, and the outer end of the front worm (15) is provided with a hexagonal groove.
4. The printing press double worm gear and worm shaft rubber roller as described in claim 1, characterized in that, The rear sleeve consists of an upper rear sleeve (4) connected by a rear connecting bolt (14) and a lower rear sleeve (2). The rear worm gear (5) and the rear worm (13) are located in the upper rear sleeve (4), and the lower rear sleeve (2) is connected to the rear roller pillow (6) by a second axial bolt (18).
5. The printing press double worm gear and worm shaft rubber roller as described in claim 4, characterized in that, The upper half of the rear set (4) is provided with a rear worm wheel hole and a rear worm hole; the rear worm wheel (5) and the rear end of the spool (3) are located in the rear worm wheel hole, and the rear worm wheel (5) is connected to the rear end of the spool (3); the rear worm (13) is located in the rear worm hole, and the outer end of the rear worm (13) is provided with a hexagonal groove.
6. The printing press double worm gear and worm shaft rubber roller as described in claim 1, characterized in that, The roll hole (1-11) and the cloth groove (1-12) are both axially arranged on the wrapping part (1-1), and the roll groove is also axially arranged on the roll (3).
7. The printing press double worm gear and worm shaft rubber roller as described in claim 1, characterized in that, A front bushing (8) and a rear bushing (7) are respectively provided between the spool (3) and the front roller pillow (9) and the rear roller pillow (6).