Positioning device and positioning method for cam double-roller output shaft

Abstract

The invention discloses a positioning device and method for a cam double-roller output shaft, and relates to the technical field of positioning tools.The positioning device comprises a pressing plate, and fixing holes allowing the output shaft to pass through are formed in the two ends of the pressing plate in the length direction correspondingly; a U-shaped groove matched with the pressing plate is formed in the middle of the supporting piece, and the pressing plate is hinged into the U-shaped groove; the protruding block is arranged in the middle of the supporting piece and is close to one fixing hole. The adjusting bolt is arranged on the protruding block in a threaded and penetrating mode. Before the position of the executing mechanism is adjusted, the adjusting bolts are used for driving the two ends of the pressing plate to generate acting force in opposite directions, the rollers on the two output shafts are pressed to the two working faces of the cam correspondingly, and the axial positions of the rollers are locked; and after the mounting bracket is adjusted to the target position and is locked again, the positioning device is removed, so that the axial movement of the output shaft caused by loosening of the mounting bracket can be avoided, the theoretical contact point of the double rollers and the cam is prevented from deviating, the pre-calibrated motion phase is maintained, and the operation stability of equipment is improved.

Description

Technical Field

[0001] This application relates to the field of positioning tooling technology, specifically a positioning device and positioning method for a cam double roller output shaft. Background Technology

[0002] The cam-driven double roller output shaft drive is a mechanical transmission structure that converts continuous rotary motion into linear reciprocating motion. It uses a motor to drive a cam with a specific profile curve to rotate, causing two rollers in close contact with the cam's working surface to undergo axial displacement as the cam profile changes. This, in turn, drives the output shaft connected to the rollers to achieve precise linear reciprocating motion. Because both rollers simultaneously conform to the cam profile, this transmission method effectively eliminates backlash and improves motion smoothness and accuracy. It is widely used in high-speed automated equipment such as cigarette packaging machines to drive actuators for heat sealing, folding, and pushing to complete process actions. The actuator is mounted on the output shaft via a mounting bracket.

[0003] The installation, maintenance and commissioning of such high-precision transmission systems are crucial, and usually involve two levels of calibration: one is "motion phase" calibration, which ensures that the actuator starts and ends its action at the correct time in the equipment cycle; the other is "static position" calibration, which adjusts the relative position or gap between the actuator itself and its mating reference components (such as guide rails and molds).

[0004] In traditional techniques, these two calibrations are interrelated, creating coupled interference. Specifically, when the static position of the actuator needs to be adjusted by loosening its mounting bracket, the rigidly connected output shaft will inevitably experience axial movement, causing the theoretical contact point between the double rollers and the cam to shift, thereby disrupting the pre-calibrated motion phase and reducing the operational stability of the equipment. Summary of the Invention

[0005] The main objective of this application is to provide a positioning device and method for a cam double roller output shaft, which aims to solve the technical problem of reduced equipment operation stability caused by axial movement of the output shaft when adjusting the static position of the actuator due to motion phase inaccuracy.

[0006] To achieve the above objectives, this application provides the following technical solution:

[0007] A positioning device for a cam double roller output shaft, comprising:

[0008] The pressure plate has fixing holes at both ends along its length that allow the output shaft to pass through;

[0009] The support member has a U-shaped groove in its middle that is adapted to the pressure plate, and the pressure plate is hinged in the U-shaped groove;

[0010] A protrusion is located in the middle of the support and near one of the fixing holes;

[0011] The adjusting bolt, threaded onto the protrusion, is used to press the corresponding end of the pressure plate against it by rotating the adjusting bolt, so that the two ends of the pressure plate generate opposite forces.

[0012] Optionally, the pressure plate has a hinge portion in the middle, the hinge portion has a hinge hole along its axial direction that allows the hinge shaft to pass through, and the hinge portion has a screw hole along its radial direction for installing a set screw, the screw hole and the hinge hole are interconnected and their axes are perpendicular.

[0013] Optionally, the support member has a shaft hole along its length that allows the hinge shaft to pass through, and the shaft hole corresponds to the hinge hole.

[0014] Optionally, the protrusion has a threaded adjustment hole along its thickness direction that is adapted to the adjustment bolt, and the axis of the threaded adjustment hole is perpendicular to the axis of the shaft hole.

[0015] Optionally, the fixing hole is an oblong hole, with its major axis extending along the length of the pressure plate and its minor axis dimension matching the diameter of the output shaft.

[0016] Optionally, the output shaft end has a threaded section, which passes through a fixing hole and is then locked by a nut.

[0017] Optionally, the protrusion and the support are integrally formed; the pressure plate and the hinge are integrally formed.

[0018] Optionally, the U-shaped groove is a right-angled U-shaped groove.

[0019] A positioning method, applied to the positioning device described above, the positioning method comprising:

[0020] Insert the two output shafts into the corresponding fixing holes along the thickness direction of the pressure plate, and lock the output shafts to the pressure plate;

[0021] Screw the adjusting screw in along the thickness direction of the protrusion so that its end contacts and abuts against the corresponding end face of the pressure plate;

[0022] Continue screwing in the adjusting bolt so that its end presses against the corresponding end face of the pressure plate, so that the two ends of the pressure plate generate opposite forces until the roller at the end of the output shaft is tightly attached to the working surface of the cam and cannot move axially.

[0023] Stop screwing in the adjusting bolt.

[0024] Optionally, after the roller is in close contact with the cam working surface and cannot move axially, the method further includes:

[0025] Loosen the clamping bolts of the mounting bracket on the output shaft to release the fixed connection between the mounting bracket and the output shaft;

[0026] Move the mounting bracket along the output shaft axis to adjust it to the target position so that the actuator is in the target position;

[0027] Tighten the clamping bolts to secure the mounting bracket to the output shaft.

[0028] Release the locking connection between the output shaft and the pressure plate, loosen the adjusting bolt, and remove the pressure plate, support, and adjusting bolt.

[0029] The technical solution provided in this application can include the following beneficial effects: By setting a detachable positioning device, before adjusting the position of the actuator, the adjusting bolt drives the two ends of the pressure plate to generate opposite forces, pressing the rollers on the two output shafts against the two working surfaces of the cam and locking their axial positions; after the mounting bracket is adjusted to the target position and re-locked, the positioning device is released. In this way, the axial movement of the output shaft caused by the loose mounting bracket can be avoided, thereby preventing the theoretical contact point between the double rollers and the cam from shifting, thus maintaining the pre-calibrated motion phase and improving the operating stability of the equipment.

[0030] The threaded adjusting hole axis and the shaft hole axis of this application are perpendicular to each other in opposite planes, so that the installation direction of the adjusting bolt and the axis of the hinge shaft are spatially offset and perpendicular to each other; the two do not interfere with each other, the structure is compact, and assembly conflicts caused by overlapping or crossing of holes are avoided; in addition, the perpendicularity between the threaded adjusting hole axis and the shaft hole axis can lock the force direction of the adjusting bolt and the rotation axis of the pressure plate to be perpendicular, ensuring that no matter what angle the pressure plate swings to, the thrust of the adjusting bolt can be effectively converted into driving torque;

[0031] The fixing hole in this application is an oblong hole, with its long axis extending along the length of the pressure plate, allowing the output shaft to move slightly within the fixing hole in this direction. This design allows for fine-tuning of the output shaft within the hole when there is a deviation between the actual center distance between the two output shafts and the theoretical center distance between the two fixing holes of the pressure plate. This ensures smooth installation of the pressure plate, reduces the requirements for machining accuracy, and improves assembly adaptability. The oblong hole design also allows pressure plates of the same specification to be used with output shaft combinations of different shaft spacings within a certain range, enhancing the versatility of the device. Attached Figure Description

[0032] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the overall structure of the positioning device;

[0034] Figure 2 This is a structural diagram of the pressure plate;

[0035] Figure 3 This is a structural schematic diagram of the support component;

[0036] Figure 4 This is a schematic diagram of the cam double roller output shaft mechanism.

[0037] Reference numerals: 1. Pressure plate; 2. Fixing hole; 3. Support; 4. U-shaped groove; 5. Protrusion; 6. Hinge; 7. Hinge hole; 8. Screw hole; 9. Shaft hole; 10. Threaded adjustment hole; 11. Cam; 12. Clamping bolt; 13. Roller; 14. Mounting bracket; 15. Output shaft. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the described embodiments are merely some, not all, of the embodiments of this application. Unless otherwise specified, the embodiments and features described in this application can be combined with each other. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0039] Example 1:

[0040] See Figures 1 to 4 A positioning device for a cam double roller output shaft, comprising:

[0041] The pressure plate 1 has fixing holes 2 at both ends along its length that allow the output shaft 15 to pass through;

[0042] The support member 3 has a U-shaped groove 4 in its middle that is adapted to the pressure plate 1, and the pressure plate 1 is hinged in the U-shaped groove 4;

[0043] The protrusion 5 is located in the middle of the support member 3 and is close to one of the fixing holes 2;

[0044] The adjusting bolt (not shown in the figure) is threaded through the protrusion 5 and is used to press the corresponding end of the pressure plate 1 by rotating the adjusting bolt, so that the two ends of the pressure plate 1 generate opposite forces.

[0045] Specifically, this application applies to cam-driven double roller output shaft mechanisms (such as...). Figure 4As shown in the figure, cam 11 is a disc cam, which is fixed to the cam shaft by clamping bolt 12; the positioning device acts on the end of the output shaft 15 away from cam 11; there are two output shafts 15, and rollers 13 are respectively provided at the end of the output shaft 15 near cam 11, and the rollers 13 abut against the working surface of cam 11; a mounting bracket 14 is provided at the end of the output shaft 15 near the positioning device, and the mounting bracket 14 is fixed to the output shaft 15 by clamping bolt 12, and an actuator is provided on the mounting bracket 14.

[0046] The pressure plate 1 is a plate-shaped structure with a fixing hole 2 at each end along its length. The fixing hole 2 allows the output shaft 15 to pass through, and the center distance between the two fixing holes 2 matches the center distance of the axes of the two output shafts 15, ensuring that the pressure plate 1 can be smoothly installed on the two output shafts 15. After the output shaft 15 passes through the fixing hole 2, it is locked by a connector to fix the pressure plate 1 to the output shaft 15. The support member 3 is a rigid component with a U-shaped groove 4 in its middle. The shape of the U-shaped groove 4 matches the contour of the pressure plate 1; specifically, the width of the U-shaped groove 4 matches the width of the pressure plate 1, and the depth of the U-shaped groove 4 is greater than the thickness of the pressure plate 1, so that the pressure plate 1 can be accommodated within the U-shaped groove 4. The pressure plate 1 is installed in the U-shaped groove 4 by a hinge, that is, the pressure plate 1 and the support member 3 form a rotatable connection, and the pressure plate 1 can swing relative to the support member 3 around the hinge point.

[0047] A protrusion 5 is located in the middle of the support member 3, i.e., on the bottom wall of the U-shaped groove 4. The protrusion 5 extends from the bottom wall toward one of the fixing holes 2 on the pressure plate 1, providing a threaded fit and support structure for the adjusting bolt. This extension design allows the adjusting bolt installed on the protrusion 5 to be close to the force-bearing end of the pressure plate 1, thereby shortening the lever arm and improving the force application efficiency. The protrusion 5 can be integrally formed with the support member 3 or can be separately fixedly connected. The adjusting bolt is threaded through the protrusion 5, and its end extends through the protrusion 5 to the inner side of the protrusion 5 and abuts against the corresponding end face of the pressure plate 1. The pressure plate 1 has a first end and a second end along its own length. The fixing hole 2 near which the protrusion 5 is located corresponds to the first end or the second end of the pressure plate 1, so the end of the adjusting bolt abuts against the first end or the second end of the pressure plate 1. Furthermore, the end of the adjusting bolt can be set to a spherical shape, a planar shape, or other shapes to achieve contact with the end face of the pressure plate 1.

[0048] Taking the first end as an example, during use, loosen the clamping bolt 12 on the cam 11, adjust the position of the roller 13 on the cam 11, and then tighten the clamping bolt 12 to prepare the positioning device. The operator fixes the two output shafts 15 together with the two fixing holes 2 on the pressure block respectively, rotates the adjusting bolt, and moves the adjusting bolt along its own axis due to the threaded fit; when the adjusting bolt moves towards the pressure plate 1, its end abuts against the first end face of the pressure plate 1 and applies pressure to it, the output shaft 15 corresponding to the first end is pushed towards the cam 11, so that its roller 13 is close to one working surface of the cam 11; the pressure plate 1 uses the hinge point as the fulcrum, and when the first end is subjected to pressure, the pressure plate 1 swings around the hinge point, and its second end generates a force opposite to the force on the first end. This reverse force is transmitted to the corresponding output shaft 15 through the second end of the pressure plate 1, pushing the output shaft 15 and its roller 13 toward the other working surface of the cam 11. Continue rotating the adjusting bolt until the rollers 13 on both output shafts 15 are tightly fitted against the working surface of the cam 11 and cannot move axially, thus completing the positioning.

[0049] In this embodiment, the "forces in opposite directions" refer to the following: when the adjusting bolt presses against the first end of the pressure plate 1, the pressure plate 1 swings around the hinge point, and its first end applies pressure to the output shaft 15 in the direction of the cam 11, while the second end applies a thrust to the other output shaft 15 in the direction of the cam 11. These two forces are in opposite directions, so that the two ends of the pressure plate 1 simultaneously apply axial forces in opposite directions to the two output shafts 15, thereby pressing the two rollers 13 simultaneously against the working surface of the cam 11.

[0050] In conventional technology, when the static position of the actuator needs to be adjusted and its mounting bracket 14 is loosened, the output shaft 15, which is rigidly connected to it, will inevitably experience axial movement. This causes the theoretical contact point between the double rollers 13 and the cam 11 to shift, thereby disrupting the pre-calibrated motion phase and reducing the operational stability of the equipment. This application addresses this by providing a detachable positioning device. Before adjusting the actuator position, the adjusting bolts drive the pressure plate 1 to generate opposing forces at both ends, pressing the rollers 13 on the two output shafts 15 against the two working surfaces of the cam 11 and locking their axial positions. After the mounting bracket 14 is adjusted to the target position and re-locked, the positioning device is released. This prevents the axial movement of the output shaft 15 caused by loosening the mounting bracket 14, thus preventing the theoretical contact point between the double rollers 13 and the cam 11 from shifting, maintaining the pre-calibrated motion phase, and improving the operational stability of the equipment.

[0051] In addition, this application also has the following effects:

[0052] Improve debugging efficiency: It avoids the repeated iterative adjustments caused by coupling interference in traditional methods, and simplifies the complex and time-consuming debugging process into a clear and standardized process, which can shorten the equipment installation, maintenance or repair time.

[0053] Lowering the operational threshold: This invention transforms debugging work, which relies on personal experience and skills, into a clear and repeatable operating procedure, reducing the special requirements for the skill level of operators and facilitating promotion and training.

[0054] Simple structure, low cost, and strong versatility: The device has a simple structure and is easy to process and manufacture. Its design concept is not limited to specific models of equipment; it can be applied to or referenced by various types of machinery (such as packaging machines, printing machines, assembly machines, etc.) that use cam double roller output shaft transmission and have similar debugging requirements.

[0055] Non-invasive temporary tooling: This device is used as a debugging aid without requiring any permanent modifications to the main equipment. Installation and disassembly are convenient, and the device is restored to its original state after use, ensuring safety and reliability.

[0056] It should be noted that the adjusting bolt is a standard part, and the attached drawings only show its installation position without depicting its specific structural details. In this embodiment, the adjusting bolt can be of M5 specification, but in actual applications, its specific structure, size specifications, and thread parameters can be selected according to the load requirements and installation space, and are not limited to the specific forms listed in this embodiment.

[0057] Example 2:

[0058] See Figure 2 Based on Embodiment 1, optionally, the pressure plate 1 is provided with a hinge portion 6 in the middle, the hinge portion 6 is provided with a hinge hole 7 along its axial direction to allow the hinge shaft (not shown in the figure) to pass through, the hinge portion 6 is provided with a screw hole 8 along its radial direction for installing a set screw (not shown in the figure), the screw hole 8 and the hinge hole 7 are interconnected and their axes are perpendicular.

[0059] Specifically, the hinge hole 7, axially formed in the hinge part 6, is used for the hinge shaft to pass through and engage, forming a stable rotational connection between the pressure plate 1 and the support member 3. This provides guidance and constraint for the pressure plate 1 to swing around a fixed fulcrum, ensuring that the pressure plate 1 can swing controllably around the hinge shaft under the drive of the adjusting bolt, thereby generating opposite forces at both ends. The screw hole 8 is used to assemble the set screw; during the positioning adjustment process, the set screw is in a loose state, and there is a clearance fit between the hinge shaft and the hinge hole 7, allowing the pressure plate 1 to swing freely around the hinge shaft, ensuring that the adjusting bolt can drive the pressure plate 1 to generate opposite forces at both ends. When the pressure plate 1 is adjusted to the target position and both rollers 13 are tightly fitted against the working surface of the cam 11, the set screw is tightened so that its end abuts against the outer circumferential surface of the hinge shaft, fixing the pressure plate 1 relative to the hinge shaft. This prevents the pressure plate 1 from unexpectedly swinging or displacing during use (during actuator adjustment), thus ensuring the stability and reliability of the positioning. When readjustment is needed, simply loosen the set screw to restore the swingable state of pressure plate 1. Furthermore, the hinge shaft is a 4mm diameter cylindrical shaft, which can be fitted with M3 / M4 set screws.

[0060] See Figure 3 Optionally, the support member 3 has a shaft hole 9 along its length that allows the hinge shaft to pass through, and the shaft hole 9 corresponds to the hinge hole 7.

[0061] Specifically, the shaft hole 9 of the support member 3 and the hinge hole 7 of the pressure plate 1 form a coaxial through-hole assembly channel, which together provide a through-hole for the hinge shaft to be installed. This provides a stable installation position and radial support for the hinge shaft, ensuring that the axis position of the hinge shaft is fixed, does not deviate, and does not sink, so that the pressure plate 1 and the support member 3 form a reliable and coaxial hinge fit. The shaft hole 9 and the hinge hole 7 limit the installation posture of the hinge shaft, ensuring that the rotation center of the pressure plate 1 is stable and the trajectory is smooth when it swings around the hinge shaft, avoiding jamming, shaking, or swaying, and ensuring that the two ends of the pressure plate 1 can stably generate and transmit forces in opposite directions.

[0062] Optionally, the protrusion 5 has a threaded adjustment hole 10 adapted to the adjustment bolt along its thickness direction, and the axis of the threaded adjustment hole 10 is perpendicular to the axis of the shaft hole 9.

[0063] Specifically, the threaded adjusting hole 10 and the adjusting bolt form a threaded engagement, allowing the adjusting bolt to move stably along the axis of the threaded adjusting hole 10 during rotation, thereby achieving the pressing, pressure application, and pressure adjustment of the pressure plate 1. The axis of the threaded adjusting hole 10 is perpendicular to the axis of the shaft hole 9, which makes the installation direction of the adjusting bolt spatially offset from and perpendicular to the axis of the hinge shaft. This layout makes full use of the three-dimensional space of the support member 3: the shaft hole 9 extends along the length of the support member 3 for installing the hinge shaft; the threaded adjusting hole 10 extends along the thickness of the protrusion 5 for installing the adjusting bolt. The two do not interfere with each other, resulting in a compact structure and avoiding assembly conflicts caused by overlapping or intersecting holes. In addition, the perpendicularity between the axis of the threaded adjusting hole 10 and the axis of the shaft hole 9 locks the direction of force applied by the adjusting bolt perpendicular to the rotation axis of the pressure plate 1, ensuring that the thrust of the adjusting bolt can be effectively converted into driving torque no matter what angle the pressure plate 1 swings to.

[0064] Example 3:

[0065] See Figures 1 to 3 Based on the above embodiments, optionally, the fixing hole 2 is an oblong hole, with its long axis extending along the length direction of the pressure plate 1, and its short axis dimension matching the diameter of the output shaft 15.

[0066] Specifically, the long axis of the oblong hole extends along the length of the pressure plate 1, allowing the output shaft 15 to move slightly within the fixed hole 2 in this direction. This design allows for slight adjustments to the output shaft 15 within the hole when there is a deviation between the actual center distance between the two output shafts 15 and the theoretical center distance between the two fixed holes 2 of the pressure plate 1. This ensures that the pressure plate 1 can be installed smoothly, reduces the requirements for machining accuracy, and improves assembly adaptability.

[0067] The short axis is matched with the diameter of the output shaft 15 (usually designed to be slightly larger than the diameter of the output shaft 15, forming a clearance fit), allowing the output shaft 15 to be positioned in this direction. The fit in the short axis direction restricts the radial displacement of the pressure plate 1 in the direction perpendicular to its length (i.e., the width direction of the pressure plate 1), preventing unexpected lateral swaying during use and ensuring positioning accuracy. The design of the elongated hole allows the pressure plate 1 of the same specification to be used with output shafts 15 of different shaft spacings within a certain range, enhancing the versatility of the device. Simultaneously, in working environments with thermal expansion, the allowance in the long axis direction can absorb minor relative displacements, improving the adaptability of the device.

[0068] Optionally, the output shaft 15 has a threaded section (not shown in the figure) at its end, which passes through the fixing hole 2 and is then locked by a nut.

[0069] Specifically, the pressure plate 1 and the output shaft 15 are reliably connected through the engagement of the threaded section and the nut, enabling the pressure plate 1 to apply force to the output shaft 15. This connection is also detachable; after positioning or when adjustment is needed, the positioning device can be removed from the output shaft 15 simply by loosening the nut. This operation is simple and does not affect the output shaft 15 or other connected mechanisms. When the adjusting bolt drives the pressure plate 1 to generate a force in the opposite direction, this force needs to be transmitted to the output shaft 15 through the connection point between the pressure plate 1 and the output shaft 15. The nut locking structure ensures that the connection point has sufficient rigidity and load-bearing capacity, effectively transmitting the force generated at both ends of the pressure plate 1 to the output shaft 15, driving it to move axially and pressing the roller 13 against the working surface of the cam 11.

[0070] Optionally, the protrusion 5 is integrally formed with the support member 3; the pressure plate 1 is integrally formed with the hinge part 6.

[0071] Specifically, the design of integral molding of protrusion 5 and support 3, and integral molding of pressure plate 1 and hinge 6, eliminates assembly errors and stress concentration caused by split connection, improves the structural rigidity and positional accuracy of key stress-bearing parts, provides a reliable geometric basis and load-bearing guarantee for the stable generation and transmission of opposite forces at both ends of pressure plate 1, and improves the positioning accuracy, working reliability and service life of the device.

[0072] Optionally, the U-shaped groove 4 is a right-angled U-shaped groove 4.

[0073] Specifically, the U-shaped groove 4 adopts a right-angle structure, meaning that the bottom wall and the two side walls intersect perpendicularly with a right-angle transition at the connection point to accommodate the edges of the pressure plate 1. When the pressure plate 1 is accommodated within the U-shaped groove 4, its edges naturally match the right-angle corners of the groove, serving both a limiting and guiding function and preventing swaying or stress concentration caused by shape mismatch. Lateral limiting prevents the pressure plate 1 from swaying or deflecting during swinging, ensuring that the pressure plate 1 can only swing stably within a predetermined space; the perpendicular connection between the bottom wall and the side walls forms a rigid whole, improving the bending and torsional stiffness of the support 3, ensuring that the entire device is stable under force and not easily deformed when the adjusting bolts are applied.

[0074] Example 4:

[0075] See Figures 1 to 4 Based on the above embodiments, this embodiment provides a positioning method applied to the positioning device described above, the positioning method comprising:

[0076] Insert the two output shafts 15 into the corresponding fixing holes 2 along the thickness direction of the pressure plate 1, and lock the output shafts 15 and the pressure plate 1.

[0077] Screw the adjusting screw along the thickness direction of the protrusion 5 so that its end contacts and abuts against the corresponding end face of the pressure plate 1;

[0078] Continue screwing in the adjusting bolt so that its end presses against the corresponding end face of the pressure plate 1, so that the two ends of the pressure plate 1 generate opposite forces until the roller 13 at the end of the output shaft 15 is tightly attached to the working surface of the cam 11 and cannot move axially.

[0079] Stop screwing in the adjusting bolt.

[0080] Specifically, this application applies to cam-driven double roller output shaft mechanisms (such as...). Figure 4 As shown in the figure, cam 11 is a disc cam 11, which is fixed to the cam shaft by clamping bolt 12; the positioning device acts on the end of the output shaft 15 away from cam 11; there are two output shafts 15, and rollers 13 are respectively provided at the end of the output shaft 15 near cam 11, and the rollers 13 abut against the working surface of cam 11; a mounting bracket 14 is provided at the end of the output shaft 15 near the positioning device, and the mounting bracket 14 is fixed to the output shaft 15 by clamping bolt 12, and an actuator is provided on the mounting bracket 14.

[0081] Based on the positioning device and the cam-driven double roller output shaft mechanism, the above steps are as follows:

[0082] ① Install the positioning device: Insert the two output shafts 15 into the corresponding fixing holes 2 at both ends of the pressure plate 1 along the thickness direction of the pressure plate 1, so that the pressure plate 1 and the two output shafts 15 are positioned relative to each other. Then, lock the connection between the output shafts 15 and the pressure plate 1. Lock the positioning device on the output shafts 15 by engaging the threaded section at the end of the output shaft 15 with the nut.

[0083] ② Initial contact: Screw the adjusting bolt into the threaded adjusting hole 10 of the protrusion 5 along the thickness direction of the protrusion 5, so that the adjusting bolt moves along its own axis toward the pressure plate 1 until its end contacts and abuts against the corresponding end face of the pressure plate 1. At this time, a force contact is established between the adjusting bolt and the pressure plate 1, but no effective force is applied to the pressure plate 1 yet.

[0084] ③ Applying force: Continue screwing in the adjusting bolt so that its end further presses against the corresponding end face of the pressure plate 1, applying pressure to that end. The pressure plate 1 uses its central hinge point as a fulcrum. When one end is subjected to pressure, the pressure plate 1 swings slightly around the hinge point, and its other end generates a force in the opposite direction to the force applied to the first end. This reverse force is transmitted axially through the other end of the pressure plate 1 to the corresponding output shaft 15.

[0085] ④ Positioning Completed: Continue screwing in the adjusting bolt, gradually increasing the pressure applied to one end of the pressure plate 1, until the rollers 13 at the ends of both output shafts 15 are tightly fitted against the working surface of the cam 11, and the output shafts 15 cannot move axially. At this point, the two rollers 13 press the cam 11 from both sides, achieving precise positioning. Stop screwing in the adjusting bolt and maintain the current state.

[0086] Example 5:

[0087] See Figures 1 to 4 Based on Embodiment 4, optionally, after the roller 13 is in close contact with the working surface of the cam 11 and cannot move axially, the following further step is taken:

[0088] Loosen the clamping bolts 12 of the mounting bracket 14 on the output shaft 15 to release the fixed connection between the mounting bracket 14 and the output shaft 15;

[0089] Move the mounting bracket 14 axially along the output shaft 15 to adjust the mounting bracket 14 to the target position so that the actuator is located at the target position;

[0090] Tighten the clamping bolt 12 to fix the mounting bracket 14 to the position on the output shaft 15;

[0091] Release the locking connection between the output shaft 15 and the pressure plate 1, loosen the adjusting bolt, and remove the pressure plate 1, support 3 and adjusting bolt.

[0092] Specifically, based on the positioning device and the cam double roller output shaft mechanism, the above steps in this embodiment are as follows:

[0093] After the roller 13 is in close contact with the working surface of the cam 11 and cannot move axially, release the fixed connection of the mounting bracket 14: loosen the clamping bolt 12 of the mounting bracket 14 on the output shaft 15 to release the fixed connection between the mounting bracket 14 and the output shaft 15, so that the mounting bracket 14 can move freely on the output shaft 15.

[0094] Adjust the position of the actuator: Move the mounting bracket 14 along the output shaft 15 axially and adjust it to the target position so that the actuator connected to the mounting bracket 14 is located at the predetermined target position; wherein, the target position refers to the preset working position that the actuator (such as a connecting rod, swing arm, etc.) needs to reach on the output shaft 15.

[0095] Locking the mounting bracket 14: Tighten the clamping bolts 12 on the mounting bracket 14 to re-fix the mounting bracket 14 to the output shaft 15, ensuring that the actuator is stable in position and will not move axially during use.

[0096] Remove the positioning device: Release the locking connection between the output shaft 15 and the pressure plate 1 (e.g., loosen the nut) to disconnect the pressure plate 1 from the output shaft 15, and loosen the adjusting bolt; then remove the pressure plate 1, support 3 and adjusting bolt from the output shaft 15 as a whole to complete the disassembly of the positioning device.

[0097] Through the above steps, the position of the actuator can be adjusted independently without interfering with the positioning state of the roller 13 and the cam 11. After the adjustment is completed, the positioning device can be removed and the normal working state of the equipment can be restored.

[0098] Furthermore, the following preparatory work needs to be done before installing the positioning device:

[0099] Loosen the clamping bolt 12 on the cam 11 to disengage the cam 11 from the camshaft; adjust the relative position of the cam 11 and the roller 13 so that the roller 13 is located at the predetermined initial position on the working surface of the cam 11; after adjustment, re-tighten the clamping bolt 12 on the cam 11 to fix the cam 11 to the camshaft. After completing the above preparations, use the positioning device described in this application to proceed to the subsequent installation and positioning steps.

[0100] This preliminary operation lays the foundation for applying a reverse force to the subsequent positioning device, ensuring that the roller 13 is in close contact with the working surface of the cam 11.

[0101] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A positioning device for a cam double roller output shaft, characterized in that, include: The pressure plate (1) has fixing holes (2) at both ends of its length direction, which allow the output shaft (15) to pass through. The support member (3) has a U-shaped groove (4) in its middle part that is adapted to the pressure plate (1), and the pressure plate (1) is hinged in the U-shaped groove (4); A protrusion (5) is located in the middle of the support (3) and near one of the fixing holes (2); The adjusting bolt, threaded through the protrusion (5), is used to press the corresponding end of the pressure plate (1) by rotating the adjusting bolt, so that the two ends of the pressure plate (1) generate opposite forces.

2. The positioning device for a cam double roller output shaft according to claim 1, characterized in that, The pressure plate (1) has a hinge part (6) in the middle. The hinge part (6) has a hinge hole (7) along its axial direction that allows the hinge shaft to pass through. The hinge part (6) has a screw hole (8) along its radial direction for installing a set screw. The screw hole (8) and the hinge hole (7) are connected to each other and their axes are perpendicular.

3. The positioning device for a cam double roller output shaft according to claim 2, characterized in that, The support member (3) has a shaft hole (9) along its length that allows the hinge shaft to pass through, and the shaft hole (9) corresponds to the hinge hole (7).

4. The positioning device for a cam double roller output shaft according to claim 3, characterized in that, The protrusion (5) has a threaded adjustment hole (10) adapted to the adjusting bolt along its thickness direction. The axis of the threaded adjustment hole (10) is perpendicular to the axis of the shaft hole (9).

5. The positioning device for a cam double roller output shaft according to claim 1, characterized in that, The fixing hole (2) is an oblong hole, with its long axis extending along the length of the pressure plate (1), and its short axis dimension matching the diameter of the output shaft (15).

6. The positioning device for a cam double roller output shaft according to claim 5, characterized in that, The output shaft (15) has a threaded section at its end, which passes through the fixing hole (2) and is then locked by a nut.

7. The positioning device for a cam double roller output shaft according to claim 2, characterized in that, The protrusion (5) and the support (3) are integrally formed; the pressure plate (1) and the hinge (6) are integrally formed.

8. The positioning device for a cam double roller output shaft according to claim 1, characterized in that, The U-shaped groove (4) is a right-angled U-shaped groove.

9. A positioning method, characterized in that, The positioning method, applied to the positioning device as described in any one of claims 1 to 8, comprises: Insert the two output shafts (15) into the corresponding fixing holes (2) along the thickness direction of the pressure plate (1), and lock the output shafts (15) and the pressure plate (1). The adjusting screw is screwed in along the thickness direction of the protrusion (5) so that its end contacts and abuts against the corresponding end face of the pressure plate (1); Continue screwing in the adjusting bolt so that its end presses against the corresponding end face of the pressure plate (1) so that the two ends of the pressure plate (1) generate opposite forces until the roller (13) at the end of the output shaft (15) is tightly attached to the working surface of the cam (11) and cannot move axially. Stop screwing in the adjusting bolt.

10. The positioning method according to claim 9, characterized in that, After the roller (13) is in close contact with the working surface of the cam (11) and cannot move axially, the following is also included: Loosen the clamping bolts (12) of the mounting bracket (14) on the output shaft (15) to release the fixed connection between the mounting bracket (14) and the output shaft (15); Move the mounting bracket (14) axially along the output shaft (15) to adjust the mounting bracket (14) to the target position so that the actuator is in the target position; Tighten the clamping bolt (12) to fix the mounting bracket (14) in position on the output shaft (15); Release the locking connection between the output shaft (15) and the pressure plate (1), loosen the adjusting bolt, and remove the pressure plate (1), support (3) and the adjusting bolt.

Images