Multi-stroke movement device

Abstract

The utility model relates to the technical field of driving mechanisms, and discloses a multi-stroke movement device, which comprises a fixed arm, a first support arm longitudinally arranged on the fixed arm in a sliding manner, a second support arm longitudinally arranged on the first support arm in a sliding manner, and a driving mechanism for driving the first support arm to longitudinally slide, the fixed arm, the first support arm and the second support arm are vertically arranged; the pulley assembly comprises a first pulley, a second pulley, a first rope and a second rope, the first pulley and the second pulley are respectively positioned at the upper end and the lower end of the first support arm, and the first rope and the second rope are respectively matched with the first pulley and the second pulley; the first rope and the second rope are both connected with the second support arm; the first rope bypasses the upper part of the first pulley and is connected with the lower end of the fixed arm; the second rope bypasses the lower part of the second pulley and is connected with the lower end of the fixed arm; the device is simple in structure, multi-stroke movement of the second supporting arm is achieved through single-stroke movement of the first supporting arm, the overall length of the device can be shortened, the storage space is saved, and practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of driving mechanisms, in particular to a multiple stroke motion device. Background Art

[0002] The existing linear drives are mainly single-stroke, such as lead screws, slide rails, oil cylinders and air cylinders. Under certain production conditions, the required linear drive distance is longer. However, the longer the effective stroke, the longer the length of the drive mechanism such as the oil cylinder and lead screw or the overall structural size will inevitably increase. When the working environment is limited, the traditional drive mechanism can no longer meet the needs of a wide range of linear drives. Therefore, a stroke doubling device is urgently needed to solve the above problems. Utility Model Content

[0003] The purpose of the utility model is to provide a multiple-stroke motion device in view of the deficiencies in the prior art, and the multiple-stroke motion device can well solve the above-mentioned problems.

[0004] In order to achieve the above requirements, the technical solution adopted by the utility model to solve its technical problems is:

[0005] The utility model provides a multiple-stroke motion device, comprising a fixed arm, a first arm longitudinally slidably arranged on the fixed arm, a second arm longitudinally slidably arranged on the first arm, and a driving mechanism for driving the first arm to slide longitudinally; the fixed arm, the first arm and the second arm are all vertically arranged; the device also includes a pulley assembly, the pulley assembly includes a first pulley and a second pulley respectively located at the upper and lower ends of the first arm, and a first rope and a second rope respectively matched with the first pulley and the second pulley; one end of the first rope and the second rope are both connected to the second arm; the other end of the first rope passes around the upper part of the first pulley and is connected to the lower end of the fixed arm; the other end of the second rope passes around the lower part of the second pulley and is connected to the lower end of the fixed arm.

[0006] The multiple-stroke motion device described in the utility model, wherein the first pulley and the second pulley are arranged opposite to each other up and down; an extension portion is horizontally arranged on the upper end of the second support arm, and the first rope and the second rope are both fixed on the extension portion.

[0007] The multiple-stroke motion device described in the utility model, wherein the fixed arm is provided with a first groove for avoiding the motion trajectory of the first support arm; a first guide rail is vertically provided on the bottom surface of the first groove, and the first support arm is slidably matched with the first guide rail.

[0008] The multiple-stroke motion device described in the utility model, wherein a second groove is provided at one end of the first arm away from the first guide rail to avoid the motion trajectory of the second arm; a second guide rail is vertically provided on an end face of the second arm facing the first arm, and the first arm slides in cooperation with the second guide rail.

[0009] The multiple-stroke motion device described in the utility model, wherein the driving mechanism includes a driving wheel and a driven wheel relatively arranged at the upper and lower ends of the fixed arm, an annular belt sleeved on the driving wheel and the driven wheel and rotatingly matched therewith, and a motor driving the driving wheel to rotate longitudinally; the motor is fixed to the upper end of the fixed arm; the upper end of the first support arm is fixedly connected to the annular belt through a connecting piece.

[0010] The multiple stroke motion device of the utility model further comprises a clamping claw arranged at the lower end of the second support arm, and a sensor for detecting whether the clamping claw is in place; the sensor is arranged at the lower end of the fixed arm.

[0011] In the multiple-stroke motion device of the utility model, a mounting bracket is further provided at one end of the fixed arm away from the first groove; and the mounting bracket is located above the sensor.

[0012] The beneficial effects of the utility model are as follows: the driving mechanism in the utility model drives the first arm to slide on the fixed arm, and when the first arm moves, the pulley will also move accordingly; at this time, the pulley is regarded as a movable pulley, and the two ends of the rope passing around the movable pulley are respectively connected to the fixed arm and the second arm; while the fixed arm is fixed, the second arm can move along the length direction of the fixed arm; when the pulling force acts on the movable pulley, the second arm can be pulled, and after ignoring the weight of the rope, the weight of the wheel and the friction, the pulling force is equal to twice the weight of the second arm, and the distance moved by the pulling force is equal to half the distance moved by the movable pulley; that is, the driving mechanism drives the first arm When the support arm moves one stroke, the second support arm can move double the stroke; pulleys are provided at both ends of the first arm, so that the first arm can drive the second arm to move in both directions, and can also ensure that the movement process is smoother and more stable; when no work is needed, the second arm can be retracted to the first arm, and the first arm can be retracted to the fixed arm, saving the overall length of the linear motion; the utility model has a simple structure and low cost, and the single-stroke reciprocating motion of the first arm is used to achieve the multiple-stroke reciprocating motion of the second arm, which can shorten the overall length of the device, save production and storage space, and has strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the utility model will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work:

[0014] Figure 1 It is a schematic diagram of the overall structure of the multiple stroke motion device of the utility model.

[0015] Figure 2 It is a rear view of the multiple stroke motion device of the utility model.

[0016] In the figure: 1. fixed arm; 11. first groove; 12. first guide rail; 13. mounting bracket; 2. first support arm; 21. second groove; 22. connecting piece; 3. second support arm; 31. extension portion; 32. second guide rail; 4. driving mechanism; 41. driving wheel; 42. driven wheel; 43. endless belt; 44. motor; 5. first pulley; 6. second pulley; 7. first rope; 8. second rope; 9. clamp; 10. sensor. DETAILED DESCRIPTION

[0017] The terms "first", "second", "third" and "fourth" etc. in the specification and claims of the present invention and the drawings are used to distinguish different objects rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units that are inherent to these processes, methods, products or devices.

[0018] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0019] "Multiple" means two or more. "And / or" describes the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the related objects are in an "or" relationship.

[0020] Moreover, the terms "up, down, left, right, upper end, lower end, longitudinal" and the like indicating directions are all based on the posture and position of the device or equipment described in this solution during normal use.

[0021] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the following will be described clearly and completely in combination with the technical solution in the embodiments of the utility model. Obviously, the described embodiments are partial embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of the utility model.

[0022] The multiple stroke motion device of the preferred embodiment of the utility model is as follows Figure 1-2 As shown, it includes a fixed arm 1, a first arm 2 longitudinally slidably arranged on the fixed arm 1, a second arm 3 longitudinally slidably arranged on the first arm 2, and a driving mechanism 4 for driving the first arm 2 to slide longitudinally; the fixed arm 1, the first arm 2 and the second arm 3 are all vertically arranged; the device also includes a pulley assembly, the pulley assembly includes a first pulley 5 and a second pulley 6 respectively located at the upper and lower ends of the first arm 2, and a first rope 7 and a second rope 8 respectively matched with the first pulley 5 and the second pulley 6; one end of the first rope 7 and the second rope 8 are both connected to the second arm 3; the other end of the first rope 7 passes around the upper part of the first pulley 5 and is connected to the lower end of the fixed arm 1; the other end of the second rope 8 passes around the lower part of the second pulley 6 and is connected to the lower end of the fixed arm 1.

[0023] In this embodiment, the driving mechanism 4 can realize the extension and retraction of the first arm 2 relative to the fixed arm 1, and the pulley assembly can realize the extension and retraction of the second arm 3 relative to the first arm 2; when the driving mechanism 4 drives the first arm 2 to slide downward, the second pulley 6 located at the lower end of the first arm 2 will first rotate to pull the second rope 8; one end of the second rope 8 is connected to the fixed arm 1 and is fixed, and the other end is connected to the second arm 3, and then the second arm 3 is pulled to slide downward; at this time, the pulling force applied to the second pulley 6 is twice the weight of the second arm 3, and the moving distance of the second pulley 6 is half the moving distance of the second arm 3; after the second arm 3 moves downward, it will also pull the first rope 7, and the first rope 7 will The first pulley 5 rotates; at this time, the pulling force applied to the first pulley 5 is half of the weight of the first arm 2, and the distance moved by the second arm 3 is twice the distance moved by the first pulley 5; when the driving mechanism 4 drives the first arm 2 to slide downward, the second pulley 6 and the second rope 8 can double the stroke, and the first pulley 5 and the first rope 7 make the overall operation of the device more stable and balanced, prevent the second rope 8 from deviating, and have a labor-saving effect; similarly, when the driving mechanism 4 drives the first arm 2 to slide upward, the first pulley 5 and the first rope 7 double the stroke, and the second pulley 6 and the second rope 8 have a labor-saving effect and prevent the first rope 7 from deviating.

[0024] The driving mechanism in the utility model drives the first arm to slide on the fixed arm, and when the first arm moves, the pulley will also move accordingly; at this time, the pulley is regarded as a movable pulley, and the two ends of the rope passing around the movable pulley are respectively connected to the fixed arm and the second arm; while the fixed arm is fixed, the second arm can move along the length direction of the fixed arm; when the pulling force acts on the movable pulley, it can pull the second arm, and after ignoring the weight of the rope, the weight of the wheel and the friction, the pulling force is equal to twice the weight of the second arm, and the distance moved by the pulling force is equal to half the distance moved by the movable pulley; that is, the driving mechanism drives the first arm to move one During the travel, the second arm can move double the stroke; pulleys are provided at both ends of the first arm, so that the first arm can drive the second arm to move in both directions, and can also ensure that the movement process is smoother and more stable; when there is no need to work, the second arm can be retracted to the first arm, and the first arm can be retracted to the fixed arm, saving the overall length of the linear motion; the utility model has a simple structure and low cost, and the single-stroke reciprocating motion of the first arm is used to achieve the multiple-stroke reciprocating motion of the second arm, which can shorten the overall length of the device, save production and storage space, and has strong practicality.

[0025] Preferably, the first pulley 5 and the second pulley 6 are arranged opposite to each other in the upper and lower parts; an extension portion 31 is laterally arranged at the upper end of the second arm 3, and the first rope 7 and the second rope 8 are both fixed on the extension portion 31; the first pulley 5 and the second pulley 6 are located in the same vertical direction, and when the second arm 3 slides up and down, it can be ensured that the first pulley 5 and the second pulley 6 are subjected to force in the same direction, thereby achieving force balance, reducing energy loss, and ensuring that the first rope 7 and the second rope 8 are stable and do not shift; the first rope 7 and the second rope 8 are fixed to the extension portion 31 at the upper end of the second arm 3, which can achieve a labor-saving effect.

[0026] Preferably, the fixed arm 1 is provided with a first groove 11 for avoiding the movement trajectory of the first arm 2; a first guide rail 12 is vertically provided on the bottom surface of the first groove 11, and the first arm 2 slides with the first guide rail 12; after the first arm 2 moves upward, it can be accommodated in the first groove 11 of the fixed arm 1, which can save the space of the entire device; a slider adapted to the first guide rail 12 is provided on the side wall of the first arm 2 opposite to the fixed arm 1, and the first arm 2 slides on the first guide rail 12 through the slider; the slider is hidden on the back of the first arm 2, which is beautiful while also ensuring the stable movement of the first arm 2.

[0027] Preferably, a second groove 21 is provided at one end of the first arm 2 away from the first guide rail 12 to avoid the movement trajectory of the second arm 3; a second guide rail 32 is vertically provided on an end surface of the second arm 3 facing the first arm 2, and the first arm 2 and the second guide rail 32 are slidably matched; after the second arm 3 moves upward, it can be accommodated in the first groove 11 of the first arm 2, which can save space for the entire device; a second guide rail 32 is provided on a side wall of the second arm 3 opposite to the first arm 2, and a slider compatible with the second guide rail 32 is provided on the bottom surface of the second groove 21 of the first arm 2; the slider is blocked by the second arm 3, and the second guide rail 32 is also hidden on the back of the second arm 3, which is beautiful while also ensuring the stable movement of the second arm 3.

[0028] Preferably, the driving mechanism 4 includes a driving wheel 41 and a driven wheel 42 relatively arranged at the upper and lower ends of the fixed arm 1, an annular belt 43 sleeved on the driving wheel 41 and the driven wheel 42 and rotatingly matched therewith, and a motor 44 driving the driving wheel 41 to rotate longitudinally; the motor 44 is fixed to the upper end of the fixed arm 1; the upper end of the first arm 2 is fixedly connected to the annular belt 43 through a connecting piece 22; the motor 44 drives the driving wheel 41 to rotate, and after the driving wheel 41 rotates, it drives the annular belt 43 to rotate, thereby driving the driven wheel 42 to rotate, and the connecting piece 22 fixed on the annular belt 43 can drive the first arm 2 to move up and down; there is a rack on the inner wall of the annular belt 43, and the driving wheel 41 and the driven wheel 42 are both meshed and connected with the annular belt 43; the connecting piece 22 is also fixedly connected by being clamped on the rack of the annular belt 43.

[0029] Preferably, the device also includes a clamping jaw 9 arranged at the lower end of the second arm 3, and a sensor 10 for detecting whether the clamping jaw 9 is in place; the sensor 10 is arranged at the lower end of the fixed arm 1; in this embodiment, the clamping jaw 9 is arranged on the second arm 3, and after the clamping jaw 9 clamps the material, the stroke of the device can be doubled to realize the material transfer within a certain working space.

[0030] Preferably, a mounting bracket 13 is further provided at one end of the fixed arm 1 away from the first groove 11; the mounting bracket 13 is located above the sensor 10; the mounting bracket 13 is welded on the back of the fixed arm 1, and the mounting bracket 13 can be used to achieve installation and fixation of the device.

[0031] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to the utility model.

Claims

1. A multiple stroke motion device, characterized in that: The device comprises a fixed arm, a first arm longitudinally slidably arranged on the fixed arm, a second arm longitudinally slidably arranged on the first arm, and a driving mechanism for driving the first arm to slide longitudinally; the fixed arm, the first arm and the second arm are all vertically arranged; the device also comprises a pulley assembly, the pulley assembly comprises a first pulley and a second pulley respectively located at the upper and lower ends of the first arm, and a first rope and a second rope respectively matched with the first pulley and the second pulley; one end of the first rope and the second rope are both connected to the second arm; the other end of the first rope passes around the upper part of the first pulley and is connected to the lower end of the fixed arm; the other end of the second rope passes around the lower part of the second pulley and is connected to the lower end of the fixed arm.

2. The multiple stroke motion device according to claim 1, characterized in that: The first pulley and the second pulley are arranged opposite to each other up and down; an extension part is transversely arranged on the upper end of the second support arm, and the first rope and the second rope are both fixed on the extension part.

3. The multiple stroke motion device according to claim 1 or 2, characterized in that: The fixed arm is provided with a first groove for avoiding the movement track of the first support arm; a first guide rail is vertically provided on the bottom surface of the first groove, and the first support arm is slidably matched with the first guide rail.

4. The multiple stroke motion device according to claim 3, characterized in that: A second groove is arranged at one end of the first arm away from the first guide rail to avoid the movement track of the second arm; a second guide rail is vertically arranged on one end surface of the second arm facing the first arm, and the first arm is slidably matched with the second guide rail.

5. The multiple stroke motion device according to claim 4, characterized in that: The driving mechanism includes a driving wheel and a driven wheel relatively arranged at the upper and lower ends of the fixed arm, an annular belt sleeved on the driving wheel and the driven wheel and rotatingly matched therewith, and a motor driving the driving wheel to rotate longitudinally; the motor is fixed to the upper end of the fixed arm; the upper end of the first support arm is fixedly connected to the annular belt through a connecting piece.

6. The multiple stroke motion device according to claim 5, characterized in that: The device also includes a clamping claw arranged at the lower end of the second supporting arm, and a sensor for detecting whether the clamping claw is in place; the sensor is arranged at the lower end of the fixed arm.

7. The multiple stroke motion device according to claim 6, characterized in that: A mounting bracket is also provided at one end of the fixing arm away from the first groove; the mounting bracket is located above the sensor.

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