A self-aligning rubber roller cutting special machine

Abstract

The application provides a kind of automatic centering rubber roll cutting special machine, rubber roll both ends are equipped with bearing, the rubber roll cutting special machine contains rubber roll clamping mechanism and multi-axis cutting tool rest;The rubber roll clamping mechanism is symmetrically arranged with the tightening device left and right, drive mechanism is arranged between the tightening device for simultaneously driving two tightening devices to move in X axis direction relative or opposite, the similar side of two tightening devices is equipped with the tightening rack, the bearing bracket with opening upward is equipped in the tightening rack, the bearing of rubber roll both ends is placed in the bearing bracket, the opposite side of the tightening rack is equipped with the tightening mechanism, two tightening mechanisms are connected, the tightening mechanism is equipped with the telescopic top rod in X axis direction;Multi-axis cutting tool rest is composed of two shaft tracks and rubber cutting cutter head installed on two shaft tracks.The application can well center rubber roll and cut rubber, solve the error caused by manual scribing and cutting, and eliminate the scrap of rubber roll.

Description

Technical Field

[0001] This invention relates to the field of offset printing, and specifically to a special machine for automatically centering and cutting rubber rollers. Background Technology

[0002] In offset printing, different areas of the ink transfer rollers for each color group need to be cut. Currently, the cutting areas are drawn by hand and then cut using a lathe. However, due to inconsistent standards and measurement errors among different personnel, there are often deviations in the cutting position, which affects the ink transfer effect.

[0003] The problems or shortcomings of existing technologies are as follows:

[0004] 1) Manually measuring and marking the rubber tapping area first requires finding the centerline of the sample sheet and corresponding it to the centerline of a steel ruler. Then, the position of a specific graphic area on the sample sheet is measured and marked on the steel ruler. Next, the width of the rubber roller's surface is measured, and the centerline is marked. The centerline of the steel ruler is then aligned with the centerline of the rubber roller, and the marked area on the steel ruler is drawn onto the corresponding rubber roller. This entire marking process is tedious, taking nearly 30 minutes per line. Especially during production transitions, drawing a large number of rubber rollers consumes a significant portion of the transition time, severely impacting efficiency.

[0005] 2) When switching production or developing new products, it is necessary to cut rubber on the rubber rollers. Currently, cutting rubber requires turning in the machine repair shop, which seriously affects the efficiency of switching production or developing new products.

[0006] 3) Measuring and drawing the rubber cutting area by hand can easily cause dimensional deviations, leading to the scrapping of rubber rollers. Summary of the Invention

[0007] This invention provides an automatic centering rubber roller cutting machine, wherein the rubber roller is provided with bearings at both ends, and the rubber roller cutting machine includes a rubber roller clamping mechanism and a multi-axis cutting blade holder;

[0008] The rubber roller clamping mechanism is symmetrically provided with clamping devices on the left and right. A driving mechanism is provided between the clamping devices to drive the two clamping devices to move relative to each other or towards each other in the X-axis direction at the same time. A clamping frame is provided on the side close to the two clamping devices. The clamping frame is provided with a bearing bracket with the opening facing upward. The bearings at both ends of the rubber roller are placed in the bearing bracket. A clamping mechanism is provided on the opposite side of the clamping frame. The two clamping mechanisms are linked together. The clamping mechanism is provided with a push rod that can extend and retract in the X-axis direction.

[0009] The multi-axis cutting tool holder consists of two-axis rails and rubber cutting heads mounted on the two-axis rails. The rails are oriented along the X-axis and Y-axis, with the X-axis being horizontal and the Y-axis being vertical.

[0010] Furthermore, the drive mechanism is equipped with a lead screw for the X-axis, and the two ends of the lead screw are provided with threads in opposite directions that engage with the threaded clamping frame.

[0011] Furthermore, the drive mechanism is equipped with a drive gear, and the two clamping frames are respectively equipped with racks that mesh with the two sides of the drive gear.

[0012] Furthermore, the bearing end face is provided with a tapered positioning hole;

[0013] The front end of the push rod is provided with an annular top block, and inside the annular top block is a tapered tip that can extend and retract axially. When the tapered tip is subjected to force, it retracts inward, and when the tapered tip is not subjected to force, it protrudes forward from the front end of the annular top block and cooperates with the tapered positioning hole.

[0014] Furthermore, the leading edge of the annular top block is provided with serrations.

[0015] Furthermore, the clamping mechanism is a cylinder.

[0016] Furthermore, the rubber roller clamping mechanism and the multi-axis cutting tool holder are both mounted on the main frame. An X-axis rail is provided on the main frame, and the clamping frame of the clamping device is slidably mounted on the X-axis rail and locked in place with screws.

[0017] This invention can effectively cut rubber by clamping the rubber roller, and its advantages are:

[0018] 1) It solves the errors caused by manual marking and cutting, and the positioning accuracy and repeatability reach ≤0.06mm, eliminating the scrap of rubber rollers;

[0019] 2) It frees up manpower and reduces labor costs;

[0020] 3) Data storage for different types of rubber rollers can be directly retrieved during processing without the need for readjustment of the cutting tool;

[0021] 4) It is easy to operate, even ordinary workers can operate it, no professional personnel are required, and the invention can be placed directly in the production workshop, which greatly improves efficiency;

[0022] 5) The processing efficiency is greatly improved. The maximum operating speed of the machine of this invention is greater than 20 meters / minute, and the processing speed and the drop speed can be dynamically adjusted during the processing. The processing time for a single piece is less than ten minutes, and manual scribing and manual turning are eliminated. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 As one embodiment, the present invention employs a gear-driven clamping device to automatically center a rubber roller cutting machine;

[0025] Figure 2 In another embodiment, a perspective view of a rubber roller clamping mechanism is shown, in which a lead screw with reverse threads at both ends is used to drive the clamping device.

[0026] Figure 3 for Figure 2 Enlarged view of a portion at point A;

[0027] Figure 4 for Figure 2 A magnified view of section B;

[0028] Figure 5 This is a 3D view of a multi-axis cutting tool holder. Detailed Implementation

[0029] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the invention. However, it will be apparent to those skilled in the art that the invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid obscuring the invention.

[0030] To fully understand this invention, detailed steps and structures will be presented in the following description to illustrate the technical solution of this invention. Preferred embodiments of the invention are described in detail below; however, in addition to these detailed descriptions, the invention may have other embodiments.

[0031] This invention provides an automatic centering rubber roller cutting machine for cutting rubber on rubber roller 1, as described above. Figure 1 As shown, the rubber roller 1 is provided with bearings 2 at both ends, and the rubber roller cutting machine includes a rubber roller clamping mechanism 100 and a multi-axis cutting tool holder 200.

[0032] The rubber roller clamping mechanism 100 is symmetrically provided with clamping devices 130 on the left and right sides. A driving mechanism is provided between the clamping devices 130 to drive the two clamping devices 130 to move relative to each other or towards each other in the X-axis direction. A clamping frame 131 is provided on the side close to the two clamping devices 130. The clamping frame 131 is provided with a bearing bracket 132 with the opening facing upward. The bearings 2 at both ends of the rubber roller 1 are placed in the bearing bracket 132. A clamping mechanism 133 is provided on the opposite side of the clamping frame 131. The two clamping mechanisms 133 are linked together. The clamping mechanism 133 is provided with a push rod 134 that extends and retracts in the X-axis direction.

[0033] The multi-axis cutting tool holder 200 consists of two-axis tracks 210 and a rubber cutting head 220 mounted on the two-axis tracks 210. The track directions of the two-axis tracks 210 are X-axis and Y-axis, where the X-axis is horizontal and the Y-axis is vertical. The two-axis tracks 210 are responsible for driving the rubber cutting head 220 to move laterally (X-axis) and longitudinally (Y-axis). Lateral movement controls the cutting width of the rubber head; longitudinal movement controls the cutting depth of the groove on the rubber surface of the rubber roller. Since the diameter of the ink rollers is different, in order to ensure that the cutting groove depth of rubber rollers of different diameters is consistent, the Z-axis reference point is positioned by inputting the diameter of the ink roller.

[0034] In one embodiment, the drive mechanism includes a lead screw 110 with an X-axis. The lead screw 110 has threads at both ends with opposite thread directions that engage with the clamping frame 131. Figure 2 As shown. In another embodiment, the drive mechanism is provided with a drive gear 120, and two clamping frames 131 are respectively provided with racks 121 that mesh with the two sides of the drive gear 120, as shown. Figure 1 As shown. The rotation of the lead screw 110 or the rack 121 simultaneously drives the two clamping devices 130 to move relative to or towards each other in the X-axis direction.

[0035] Reference Figure 3-4 As shown, the bearing 2 has a tapered positioning hole 3 on its end face, and the front end of the push rod 134 has an annular top block 135. An axially telescopic tapered tip 136 is provided inside the annular top block 135. When subjected to force, the tapered tip 136 retracts inward, and when not subjected to force, the tapered tip 136 protrudes forward from the front end of the annular top block 135 and engages with the tapered positioning hole 3. Preferably, the clamping mechanism 133 is a cylinder.

[0036] The annular top block 135 has serrations at its leading edge, which can better tighten the bearing 2, making it less likely for the rubber roller 1 to rotate during rubber cutting.

[0037] The rubber roller clamping mechanism 100 and the multi-axis cutting blade holder 200 are both mounted on the main frame 300. An X-axis rail 310 is provided on the main frame 300. The clamping frame 131 of the clamping device 130 is slidably mounted on the X-axis rail 310 and locked with screws to facilitate adjustment of the position of the clamping frame 131.

[0038] The centering process of this invention is as follows:

[0039] 1) Start the servo motor. The servo motor drives the lead screw 110 or rack 121 to rotate, so that the two clamping devices 130 move relative to each other in the X-axis direction to a suitable position. Then, the bearings 2 at both ends of the rubber roller 1 are placed into the bearing bracket 132 by hand or by machine. At this time, precise alignment is not required.

[0040] 2) Activate the clamping mechanism 133. The push rods 134 of the two clamping mechanisms 133 move towards each other. The conical tip 136 first inserts into the conical positioning hole 3 on the end face of the bearing 2, serving as a pre-positioning function. As the push rods 134 continue to extend, the leading edge of the annular top block 135 abuts against the end face of the bearing 2, and the conical tip 136 is squeezed back into the push rod 134 by the bearing 2. At this time, the rubber roller 1 is aligned.

[0041] 3) The rubber cutting head 220 slides on the two-axis track 210 and performs rubber cutting on the rubber roller 1.

[0042] The preferred embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and the devices and structures not described in detail should be understood as being implemented in a conventional manner in the art. Any person skilled in the art can make many possible variations and modifications to the technical solutions of the present invention using the methods and techniques disclosed above, or modify them into equivalent embodiments with equivalent changes, without departing from the scope of the present invention. This does not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the present invention's technical solutions still fall within the protection scope of the present invention.

Claims

1. An automatic centering rubber roller cutting machine, wherein bearings (2) are provided at both ends of the rubber roller (1), characterized in that, The special machine for cutting rubber rollers includes a rubber roller clamping mechanism (100) and a multi-axis cutting tool holder (200); The rubber roller clamping mechanism (100) is symmetrically provided with clamping devices (130) on the left and right sides. A driving mechanism is provided between the clamping devices (130) for simultaneously driving the two clamping devices (130) to move relative to each other or towards each other in the X-axis direction. A clamping frame (131) is provided on the side close to the two clamping devices (130). The clamping frame (131) is provided with a bearing bracket (132) with the opening facing upward. The bearings (2) at both ends of the rubber roller (1) are placed in the bearing bracket (132). A clamping mechanism (133) is provided on the opposite side of the clamping frame (131). The two clamping mechanisms (133) are linked together. The clamping mechanism (133) is provided with a push rod (134) that extends and retracts in the X-axis direction. The multi-axis cutting tool holder (200) consists of two-axis rails (210) and a rubber cutting head (220) mounted on the two-axis rails (210). The rail directions of the two-axis rails (210) are X-axis and Y-axis, where the X-axis is horizontal and the Y-axis is vertical.

2. The automatic centering rubber roller cutting machine as described in claim 1, characterized in that, The drive mechanism is provided with a lead screw (110) on the X-axis. The two ends of the lead screw (110) are provided with threads in opposite directions and are threaded to the clamping frame (131).

3. The automatic centering rubber roller cutting machine as described in claim 1, characterized in that, The drive mechanism is equipped with a drive gear (120), and two clamping frames (131) are respectively equipped with racks (121) that mesh with the two sides of the drive gear (120).

4. The automatic centering rubber roller cutting machine as described in claim 1, characterized in that, The bearing (2) has a tapered positioning hole (3) on its end face; The front end of the push rod (134) is provided with an annular top block (135), and an axially telescopic conical tip (136) is provided inside the annular top block (135). When the conical tip (136) is subjected to force, it retracts inward, and the unforced conical tip (136) protrudes forward from the front end of the annular top block (135) and cooperates with the conical positioning hole (3).

5. The automatic centering rubber roller cutting machine as described in claim 4, characterized in that, The leading edge of the annular top block (135) is serrated.

6. The automatic centering rubber roller cutting machine as described in claim 1, characterized in that, The clamping mechanism (133) is a cylinder.

7. The automatic centering rubber roller cutting machine as described in claim 1, characterized in that, The rubber roller clamping mechanism (100) and the multi-axis cutting tool holder (200) are both mounted on the main frame (300). An X-axis rail (310) is provided on the main frame (300). The clamping frame (131) of the clamping device (130) is slidably mounted on the X-axis rail (310) and locked with screws.

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