Detection device for shortening stroke
By designing a detection device that shortens the stroke, and utilizing a movable pulley and traction rope structure to double the stroke of the motion mechanism, the problem of the hydraulic cylinder piston stroke exceeding the detection stroke was solved, thereby improving production efficiency and product quality, and reducing equipment costs.
Patent Information
- Application Number
- CN202520012581.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-03
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-01-03
AI Technical Summary
During the coil feeding process, the movement stroke of the hydraulic cylinder piston exceeds the detection stroke, resulting in signal loss, which affects production efficiency and product quality.
Design a detection device with shortened stroke. By using a stroke scaling unit and a position detection unit, and utilizing a movable pulley and traction rope structure to double the stroke of the motion mechanism, the detection distance can be expanded, thereby increasing the applicability of the detection device.
Without altering the original motion mechanism, the detection range of the testing device was expanded, production efficiency and product quality were improved, and equipment costs were reduced.
Smart Images
Figure CN223718017U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to stroke detection technical field, specifically relates to a detection device of shortening stroke. BACKGROUND
[0002] The uncoiler is an auxiliary feeding equipment used in the automatic processing production line of the roll stock punching, uncoiling, laser cutting and shearing line, and is a mechanical equipment for unfolding the roll stock (such as steel roll, aluminum roll, etc.). The operator needs to place the roll stock on the spindle of the uncoiler, and through the hydraulic expansion and contraction principle, the inner hole of the roll stock is fixed with the supporting arm, and then the motor drives the expansion and contraction roll to rotate, and drives the roll to uncoil.
[0003] In the process of roll stock feeding, due to the inconsistency of the sleeve (steel sleeve, cast aluminum sleeve or aluminum winding sleeve, etc.) of the machine roll, the size of the inner core of the machine roll is inconsistent, which causes the inconsistent position of the hydraulic cylinder piston (stroke 0-80MM) after the expansion and contraction of the roll. If the core shaft tensioning proximity switch is adjusted to the appropriate position, the production efficiency is seriously reduced. SUMMARY
[0004] The utility model discloses to solve the problem that the movement stroke of the hydraulic cylinder piston exceeds the detection stroke in the process of roll stock feeding, resulting in signal loss, provides a kind of detection device of shortening stroke, in the stroke of original movement mechanism without changing, the detection distance of position switch is enlarged, and production efficiency and product quality are improved, and the normal and safe production of rolling mill is guaranteed.
[0005] In order to realize the above-mentioned purpose, the technical scheme of the utility model is:
[0006] A kind of detection device of shortening stroke, including rack, the stroke scaling unit being arranged on the upper layer of the rack and the position detection unit being arranged on the lower layer of the rack, the stroke scaling unit includes two coaxially arranged movable pulleys, two movable pulleys are rotatably connected with center shaft, fixed shaft is slidably connected with center shaft and is fixedly arranged in the rack, the fixed shaft limits the movement direction of movable pulley, the other side of the rack away from movable pulley is provided with static pulley, traction rope is sleeved on movable pulley and static pulley, both ends of the traction rope are movably arranged on the rack, the traction rope first passes through one movable pulley, changes direction after passing through static pulley, and then is sleeved on another movable pulley, elastic member is arranged between the center shaft and the fixed shaft, and the elastic member is used for the rebound of the center shaft;The rack is used to support the stroke scaling unit and the position detection unit.
[0007] The center shaft is fixedly provided with a limiting rod, the limiting rod is matched with a detection unit, and the detection unit is used for detecting the position of the limiting rod.
[0008] Further, two first reversing wheels and two second reversing wheels are arranged on the rack, and two ends of the traction rope pass through the first reversing wheels and the second reversing wheels in sequence and then reach the movable pulley.
[0009] Further, a limiting plate is arranged on the top of the rack, and the two ends of the traction rope are movably arranged on the limiting plate, and the movement direction of the two ends of the traction rope is parallel to the movement direction of the movable pulley.
[0010] Further, the elastic member is a spring, one end of the spring is fixedly connected with the center shaft, and the other end is fixedly connected with the fixed shaft. When the traction end of the traction rope is not subjected to force, the spring pushes the two movable pulleys back to the initial positions.
[0011] Further, the detection unit is arranged on the rack through track sliding, and the direction of the track is parallel to the axial direction of the fixed shaft.
[0012] Further, the detection unit is a proximity switch.
[0013] Through the above technical scheme, the beneficial effects of the utility model are as follows:
[0014] The utility model sets up stroke scaling unit and detection unit, uses movable pulley synchronous stroke of motion mechanism, through setting up two movable traction rope end, can shorten motion mechanism's stroke 2 times or 4 times, under the condition that does not change original detection device and motion mechanism, expands detection device and can detect motion mechanism's stroke, increased detection device's applicability, reduced equipment cost, saved resources. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 It is the structural schematic diagram of the utility model;
[0016] Figure 2 It is the structural schematic diagram of the traction rope and the pulley set of the utility model;
[0017] Figure 3 It is the structural schematic diagram of the traction rope of the utility model and not pulled out;
[0018] Figure 4 It is the structural schematic diagram of the traction rope of the utility model and pulled out;
[0019] The reference signs in the drawings are: 1 is a rack, 2 is a movable pulley, 21 is a central shaft, 3 is a fixed shaft, 4 is a static pulley, 5 is a traction rope, 6 is an elastic member, 7 is a limiting rod, 8 is a detection unit, 91 is a first reversing wheel, and 92 is a second reversing wheel. DETAILED DESCRIPTION
[0020] The utility model will be further described below in combination with the drawings and specific embodiments:
[0021] As shown in the drawings, the embodiment provides a detection device for shortening stroke, which can shorten the stroke of the motion mechanism by 2 times or 4 times, expands the stroke of the motion mechanism that can be detected by the detection device without changing the original detection device and motion mechanism, increases the applicability of the detection device, reduces the equipment cost, and saves resources. Figures 1-4 The detection device for shortening stroke includes a rack 1, a stroke scaling unit arranged on the upper layer of the rack 1, and a position detection unit arranged on the lower layer of the rack 1. The rack is used to support the stroke scaling unit and the position detection unit. The stroke scaling unit is used to shorten the stroke of the motion mechanism, and the position detection unit is used to detect the position information after scaling.
[0022] As shown in the drawings, the top of the rack 1 is provided with a limiting plate, both ends of the traction rope 5 are movably arranged on the limiting plate, and the movement direction of both ends of the traction rope 5 is parallel to the movement direction of the movable pulley 2. The rack 1 includes a top plate and a bottom plate, a side plate is arranged between the top plate and the bottom plate, the upper surface of the top plate is provided with the limiting plate, and both ends of the fixed shaft 3 are fixed on the side plate.
[0023] Figure 1 The stroke scaling unit includes two coaxially arranged movable pulleys 2, both the movable pulleys 2 are rotationally connected with the central shaft 21, the fixed shaft 3 is fixedly arranged in the rack 1 and is in sliding connection with the central shaft 21, the elastic member 6 is arranged between the central shaft 21 and the fixed shaft 3, the fixed shaft 3 limits the movement direction of the movable pulley 2, and the elastic member 6 is used for the rebound reset of the central shaft 21. The elastic member 6 is a spring, one end of the spring is fixedly connected with the central shaft 21, and the other end is fixedly connected with the fixed shaft 3.
[0024] Pull the traction rope 5, the movable pulley 2 drives the central shaft 21 to move on the fixed shaft 3; release the traction rope 5, and the central shaft 21 returns to the initial position under the action of the elastic member 6. Specifically, both ends of the central shaft 21 are rotationally connected with the two movable pulleys 2 respectively, a rectangular connecting block is arranged in the middle of the central shaft 21, a through hole is arranged on the rectangular connecting block for the fixed shaft 3 to pass through, and the elastic member 6 is arranged between the rectangular connecting block and the fixed shaft 3; the fixed shaft 3 is in a cylindrical shape, and both ends of the fixed shaft 3 are fixed on the rack.
[0025] Pull the traction rope 5, the movable pulley 2 drives the central shaft 21 to move on the fixed shaft 3; release the traction rope 5, and the central shaft 21 returns to the initial position under the action of the elastic member 6. Specifically, both ends of the central shaft 21 are rotationally connected with the two movable pulleys 2 respectively, a rectangular connecting block is arranged in the middle of the central shaft 21, a through hole is arranged on the rectangular connecting block for the fixed shaft 3 to pass through, and the elastic member 6 is arranged between the rectangular connecting block and the fixed shaft 3; the fixed shaft 3 is in a cylindrical shape, and both ends of the fixed shaft 3 are fixed on the rack.
[0026] As Figure 2 shown, the other side of the rack 1 away from the movable pulley 2 is provided with a static pulley 4, in this embodiment, two static pulleys 4 are provided, the rack 1 is also provided with two first reversing wheels 91 and two second reversing wheels 92.
[0027] The movable pulley 2 and the static pulley 4 are provided with a traction rope 5, both ends of the traction rope 5 are movably arranged on the rack 1, in order to ensure the structural strength of the traction rope 5, the traction rope 5 is a steel wire rope, the end of the traction rope 5 is provided with a head with a larger diameter than the steel wire rope, the head can be clamped on the limiting plate.
[0028] The two ends of the traction rope 5 pass through the first reversing wheel 91 and the second reversing wheel 92 in turn and reach the movable pulley 2, the traction rope 5 passes through one of the movable pulleys 2 first, changes direction after passing through the static pulley 4, and then is sleeved on the other movable pulley 2, when one end of the traction rope 5 is pulled, the other end of the traction rope 5 is fixed, at this time the traction rope 5 passes through the two movable pulleys 2, at this time the movement stroke is four times the detection stroke; while pulling both ends of the traction rope 5, each end matches one movable pulley 2, the traction rope 5 at the static pulley 4 is in a static state, at this time the movement stroke is twice the detection stroke.
[0029] Figure 3 As shown, the position of the movable pulley 2 when the traction rope 5 is not pulled out, Figure 4 As shown, the position of the movable pulley 2 relative to the traction end of the traction rope 5 when both ends of the traction rope 5 are pulled out, Figure 4 As shown, the stroke expansion multiple is four times.
[0030] In order to detect the moving position after the stroke expansion, a limiting rod 7 is fixedly arranged on the center shaft 21, in this embodiment, the limiting rod 7 is in the shape of a long strip, the limiting rod 7 matches a detection unit 8, the detection unit 8 is used to detect the position of the limiting rod 7.
[0031] In order to increase the applicability of the device, the detection unit 8 is arranged on the rack 1 through a track, the direction of the track is parallel to the axis direction of the fixed shaft 3. The detection unit 8 is a proximity switch. The detection unit 8 can be adjusted to the appropriate position according to different piston strokes, so that the device can be applied to various types of cylinders.
[0032] In use, one movable end or both movable ends of the traction rope 5 of the device are fixed to the moving end of the piston, preferably, a connecting rod perpendicular to the moving direction of the piston can be arranged on the moving end of the piston, the end of the traction rope 5 is connected with the piston through the connecting rod, so that the moving direction of the movable end of the traction rope 5 is always parallel to the moving direction of the movable pulley 2.
[0033] During the movement of the piston, the traction rope 5 moves along with it, driving the moving pulleys 2 to move along the direction of the fixed shaft 3; when one end of the traction rope 5 is fixed on the piston, the traction rope 5 passes around two moving pulleys 2, at this time, the stroke of the movement mechanism is scaled by 4 times; when two ends of the traction rope 5 are fixed on the piston, the two ends of the traction rope 5 drive one moving pulley 2 respectively, at this time, the stroke of the movement mechanism is scaled by 2 times. The detection unit 8 detects the position of the limiting rod 7, that is, the position of the piston can be obtained.
[0034] The above-mentioned embodiments are only the preferred embodiments of the present application, and are not intended to limit the scope of the present application. Any equivalent changes or modifications made according to the structure, features and principles described in the patent range of the present application should be included in the patent range of the present application.
Claims
1. A stroke shortening detection device characterized by comprising: The stroke scaling unit is arranged on the upper layer of the rack (1), and the position detection unit is arranged on the lower layer of the rack (1). The stroke scaling unit comprises two coaxially arranged movable pulleys (2), and the two movable pulleys (2) are rotationally connected with a center shaft (21). A fixed shaft (3) is fixedly arranged in the rack (1) and is slidingly connected with the center shaft (21). The fixed shaft (3) limits the movement direction of the movable pulley (2). A stationary pulley (4) is arranged on the other side of the rack (1) away from the movable pulley (2). The movable pulley (2) and the stationary pulley (4) are sleeved with a traction rope (5). Both ends of the traction rope (5) are movably arranged on the rack (1). The traction rope (5) passes through one of the movable pulleys (2) first, changes direction after passing through the stationary pulley (4), and is then sleeved with the other movable pulley (2). An elastic member (6) is arranged between the center shaft (21) and the fixed shaft (3), and the elastic member (6) is used for the elastic return of the center shaft (21). A limiting rod (7) is fixedly arranged on the center shaft (21), and the limiting rod (7) is matched with a detection unit (8). The detection unit (8) is used for detecting the position of the limiting rod (7).
2. A stroke shortening detection device according to claim 1, characterized in that Two first reversing wheels (91) and two second reversing wheels (92) are further arranged on the rack (1). Both ends of the traction rope (5) pass through the first reversing wheels (91) and the second reversing wheels (92) in sequence and then reach the movable pulleys (2).
3. The stroke shortening detection device of claim 1, wherein A limiting plate is arranged on the top of the rack (1), both ends of the traction rope (5) are movably arranged on the limiting plate, and the movement direction of both ends of the traction rope (5) is parallel to the movement direction of the movable pulley (2).
4. The stroke shortening detection device of claim 1, wherein The elastic member (6) is a spring, one end of the spring is fixedly connected with the center shaft (21), and the other end is fixedly connected with the fixed shaft (3).
5. The stroke shortening detection device of claim 1, wherein The detection unit (8) is slidably arranged on the rack (1) through a track, and the direction of the track is parallel to the axis direction of the fixed shaft (3).
6. The stroke shortening detection device of claim 1, wherein The detection unit (8) is a proximity switch.