Automatic positioning adjusting device of die cutting thermoprinting machine

Abstract

The utility model discloses an automatic positioning adjusting device of a die cutting thermoprinting machine, a positioning unit comprises a positioning swing rod and a linear cam, a servo motor is fixedly arranged on a side wall plate of a rack, the output end of the servo motor is connected with an eccentric shaft through a coupler, and the eccentric shaft is supported on the rack through a bearing seat; the linear cam is fixedly sleeved on the eccentric section of the eccentric shaft through key connection or a set screw; the middle of the positioning swing rod is rotatably hinged to the movable platform through a rotating shaft, a roller is arranged at one end of the positioning swing rod and keeps in movable contact with the working contour face of the linear cam under the pretightening force effect of the reset spring, and a positioning end used for making contact with the positioning face on the gripper bar body is formed at the other end of the positioning swing rod. According to the utility model, a driving part is fixed, and a moving part is light, so that the stability and response speed of the system under high-speed operation are improved, the problem of inaccurate positioning caused by abrasion deformation of a chain, a tooth row body and the like is effectively solved, and the hot stamping and die cutting quality is obviously improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a die -cutting machine, concretely relates to a positioning automatic adjusting device of die -cutting hot stamping machine. BACKGROUND

[0002] The die -cutting machine is a kind of equipment specially used for paper post-printing processing. One kind of die -cutting machine is to drive paper to move to different processing units for processing operation by paper clamping tooth row. In order to ensure the accuracy of paper conveying, positioning device is usually arranged in processing unit. Chinese patent document (publication number: CN 214215143 U, publication date: September 17, 2021) discloses a rear positioning automatic adjusting device of die -cutting hot stamping machine, including rack, movable platform and positioning unit, the positioning unit includes positioning swing lever and straight line cam, the straight line cam is fixedly installed on the rack, the other end is connected with the spring installed on the movable platform, characterized by the movable platform is installed with servo motor, the output end of the servo motor is connected with eccentric shaft, the positioning swing lever is sleeved on the eccentric shaft, the servo motor is electrically connected with programmable controller.

[0003] The defect of the above structure is that the servo motor is installed on the movable platform, which increases the motion quality, and in the actual use process, it will affect the stability and response speed under high-speed operation. UTILITY MODEL CONTENT

[0004] In view of the deficiencies of the background art, the technical problem to be solved by the utility model is to provide a front paper feeding full-automatic feeding mechanism for solving the above problems.

[0005] Therefore, the utility model is implemented by the following scheme:

[0006] A positioning automatic adjusting device of die -cutting hot stamping machine, including rack, movable platform and positioning unit, the positioning unit includes positioning swing lever and straight line cam, characterized by: the side wall plate of the rack is fixedly installed with servo motor, the output end of the servo motor is connected with eccentric shaft through shaft coupling, the eccentric shaft is supported on the rack through bearing seat;The straight line cam is sleeved on the eccentric segment of the eccentric shaft;The middle part of the positioning swing lever is rotatably hinged on the movable platform through a rotating shaft, one end of the positioning swing lever is provided with a roller, the roller is in dynamic contact with the working profile surface of the straight line cam under the pre-tightening force of return spring, the other end of the positioning swing lever forms a positioning end for contacting with the positioning surface on tooth row body;The servo motor is electrically connected with a programmable controller, and the programmable controller controls the servo motor to drive the eccentric shaft and straight line cam to rotate to the corresponding compensation angle according to the error parameters of each tooth row body.

[0007] The reset spring is a tension spring, one end of which is connected to the positioning swing lever at a position away from the roller, and the other end of which is connected to the movable platform or a fulcrum fixed to the movable platform.

[0008] A shaft sleeve is arranged between the rotating shaft and the movable platform, and the positioning swing lever is sleeved on the rotating shaft through a bearing or a copper sleeve.

[0009] The roller is installed at the end of the positioning swing lever through a roller shaft, and the outer edge contour of the roller matches the contour of the straight-line cam.

[0010] The positioning units are symmetrically installed on both sides of the die-cutting and stamping machine along the paper running direction, namely, an operation side and a transmission side, and the servo motor, the eccentric shaft and the straight-line cam on each side form an independent driving and adjusting module.

[0011] The programmable controller pre-stores an identification code and an error compensation value corresponding to each tooth row body on the transmission chain, and when a tooth row body with a specific identification code is detected to be about to enter the positioning station, the corresponding compensation value is called to control the servo motor on the corresponding side to act.

[0012] The position sensor for detecting the position of the tooth row body is further included, and the position sensor is in signal connection with the programmable controller.

[0013] Lock nuts and spacers are further sleeved on the eccentric shaft on both sides of the straight-line cam, for axially positioning the straight-line cam.

[0014] The front paper feeding full-automatic feeding mechanism of the above technical solution integrally sets the driving and adjusting assembly of the servo motor, the eccentric shaft and the straight-line cam on the rack wall plate, and only the light positioning swing lever is arranged on the movable platform. This greatly reduces the mass of the reciprocating component, is beneficial to improving the running speed, dynamic response and long-term mechanical stability of the equipment. The driving component is not affected by the vibration and inertia of the platform reciprocating motion, the control is more stable, and the service life of the motor and the transmission component can be longer. Meanwhile, it retains the core advantage of independently and automatically compensating for each tooth row body, can effectively overcome the cumulative error caused by the stretching of the chain, the individual differences of the tooth row body and the tooth sheet, realizes super-precision positioning, improves the stamping and die-cutting quality, and reduces waste. BRIEF DESCRIPTION OF DRAWINGS

[0015] The utility model discloses the following drawings:

[0016] Figure 1 It is the structural schematic diagram of the utility model;

[0017] Figure 2 It is Figure 1 It is the view of removing part rack;

[0018] Figure 3 It isFigure 2 Figure 4 is a local enlarged view of the arrow direction of Figure 3. DETAILED DESCRIPTION

[0019] As shown, the utility model discloses a positioning automatic adjusting device of die cutting hot stamping machine, including frame 1, movable platform 12 and positioning unit, and positioning unit includes positioning swing lever 5 and straight line cam 2, and the side wall board of frame 1 is fixedly installed with servo motor 7, and the output end of servo motor 7 is connected with eccentric shaft 8 through coupling, and eccentric shaft 8 is supported on frame 1 through bearing seat 17, and straight line cam 2 is sleeved on the eccentric section of eccentric shaft 8, and the middle part of positioning swing lever 5 is rotatably hinged on movable platform 12 through a rotating shaft 15, and one end of positioning swing lever 5 is equipped with roller 10, and roller 10 keeps dynamic contact with the working profile surface of straight line cam 2 under the pre-tightening force of return spring 6, and the other end of positioning swing lever 5 forms positioning end 16 for contacting the positioning surface on toothed bar body 3, and servo motor 7 is electrically connected with a programmable controller, and the programmable controller controls servo motor 7 to drive eccentric shaft 8 and straight line cam 2 to rotate to the corresponding compensation angle according to the error parameters of each toothed bar body 3.

[0020] Further, return spring 6 is a tension spring, one end of which is connected to positioning swing lever 5 at a position away from roller 10, and the other end is connected to movable platform 12 or a fulcrum fixed to movable platform 12.

[0021] Further, a shaft sleeve is provided between rotating shaft 15 and movable platform 12, and positioning swing lever 5 is sleeved on rotating shaft 15 through a bearing or copper sleeve, ensuring the flexibility of positioning swing lever.

[0022] Further, roller 10 is installed at the end of positioning swing lever 5 through roller shaft 19, and the outer edge profile of roller 10 matches the profile of straight line cam 2.

[0023] Further, the positioning unit is symmetrically installed on both sides of die cutting hot stamping machine along the direction of paper movement, i.e. the operation side and the transmission side, and servo motor 7, eccentric shaft 8 and straight line cam 2 on each side constitute an independent drive adjustment module, which can realize independent monitoring and positioning of toothed bar bodies on both sides, further improving the accuracy of positioning.

[0024] Further, the programmable controller has pre-stored identification codes and error compensation values corresponding to each toothed bar body 3 on transmission chain 4, and when a toothed bar body 3 with a specific identification code is detected to be about to enter the positioning station, the corresponding compensation value is called to control the action of servo motor 7 on the corresponding side.

[0025] Further, it further includes a position sensor for detecting the position of toothed bar body 3, which is signal connected with the programmable controller, for real-time feedback of the actual positioning of toothed bar body, realizing closed-loop or semi-closed-loop control, and further improving the accuracy.

[0026] Further, the eccentric shaft 8 is sleeved with a locking nut and a spacer on both sides of the linear cam 2, which is used for axial positioning of the linear cam 2.

[0027] The working principle of the utility model is: the eccentric shaft 8 is rotated by the servo motor 7, the initial contact phase of the linear cam 2 profile relative to the roller 10 on the positioning swing lever 5 is changed. When the movable platform 12 drives the positioning swing lever 5 to rise, because the linear cam 2 profile phase has been adjusted in advance, the swing starting point and trajectory of the positioning swing lever 5 are forced to be accurately offset, so that when the swing lever positioning end 16 contacts the toothed bar body 3, the inherent position error of the toothed bar body 3 is exactly offset.

Claims

1. A positioning automatic adjustment device of a die-cutting hot stamping machine, comprising a rack (1), a movable platform (12) and a positioning unit, the positioning unit comprising a positioning swing lever (5) and a linear cam (2), characterized in that: The side wall plate of the frame (1) is fixedly provided with a servo motor (7), the output end of the servo motor (7) is connected with an eccentric shaft (8) through a shaft coupling, and the eccentric shaft (8) is supported on the frame (1) through a bearing seat (17); the linear cam (2) is sleeved on the eccentric section of the eccentric shaft (8); the middle part of the positioning swing lever (5) is rotatably hinged to the movable platform (12) through a rotating shaft (15), one end of the positioning swing lever (5) is provided with a roller (10), the roller (10) is in dynamic contact with the working profile surface of the linear cam (2) under the pre-tightening force of a reset spring (6), and the other end of the positioning swing lever (5) forms a positioning end (16) used for contacting a positioning surface on the toothed bar body (3); the servo motor (7) is electrically connected with a programmable controller, the programmable controller controls the servo motor (7) to drive the eccentric shaft (8) and the linear cam (2) to rotate to a corresponding compensation angle according to preset error parameters of each toothed bar body (3).

2. The automatic positioning adjustment device of a die cutting and hot stamping machine according to claim 1, characterized in that: The reset spring (6) is a tension spring, one end of the reset spring (6) is connected to the positioning swing lever (5) at a position away from the roller (10), and the other end of the reset spring (6) is connected to the movable platform (12) or a supporting point fixedly connected with the movable platform (12).

3. The automatic positioning adjustment device of a die cutting and stamping machine according to claim 1, characterized in that: A shaft sleeve is arranged between the rotating shaft (15) and the movable platform (12), and the positioning swing lever (5) is sleeved on the rotating shaft (15) through a bearing or a copper sleeve.

4. The automatic positioning adjustment device of a die cutting and stamping machine according to claim 1, characterized in that: The roller (10) is installed at the end of the positioning swing lever (5) through a roller shaft (19), and the outer edge profile of the roller (10) is matched with the profile of the linear cam (2).

5. The automatic positioning adjustment device of a die cutting and stamping machine according to claim 1, characterized in that: The positioning units are symmetrically installed on both sides of the die-cutting stamping machine along the paper advancing direction, namely an operation side and a transmission side, and the servo motor (7), the eccentric shaft (8) and the linear cam (2) on each side constitute an independent driving and adjusting module.

6. The automatic positioning adjustment device of a die-cutting stamping machine according to claim 5, characterized in that: The programmable controller pre-stores an identification code and an error compensation value corresponding to each toothed bar body (3) on the transmission chain (4), and when a toothed bar body (3) with a specific identification code is detected to enter the positioning station, the corresponding compensation value is called to control the servo motor (7) on the corresponding side to act.

7. The automatic positioning adjustment device of a die cutting and stamping machine according to claim 1, characterized in that: A position sensor for detecting the position of the toothed bar body (3) is further included, and the position sensor is signal-connected with the programmable controller.

8. The automatic positioning adjustment device of a die-press machine according to claim 1, characterized in that: Lock nuts and spacers are further sleeved on the eccentric shaft (8) on both sides of the linear cam (2), and are used for axially positioning the linear cam (2).

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