Multi-stroke reciprocating motion mechanism

Abstract

The utility model relates to the technical field of driving mechanisms, and discloses a multi-stroke reciprocating motion mechanism which comprises a first connecting arm. A second connecting arm and a third connecting arm are respectively arranged on the front surface and the rear surface of the first connecting arm in a sliding manner; a first annular conveying belt is movably arranged on the first connecting arm; the second connecting arm is fixedly connected with the front side conveying face of the first annular conveying belt through a first connecting piece. The third connecting arm is fixedly connected with the rear side conveying face of the first annular conveying belt through a second connecting piece. The mechanism further comprises a power assembly for driving the first connecting arm to slide on the third connecting arm so as to drive the first annular conveying belt to rotate. The first connecting piece gets close to or away from the second connecting piece through rotation of the first annular conveying belt. The multi-stroke reciprocating motion of the second connecting arm is achieved through the single-stroke motion of the first connecting arm, the space utilization rate can be increased, and the production space is saved.

Description

Technical Field

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

[0002] The distance that the lead screw in a lead screw structure extends in one rotation is the lead screw pitch length. The larger the pitch, the longer the stroke in one rotation, the longer the effective stroke, and the larger the volume of the equipment occupied. The same problem also exists in traditional drive mechanisms such as slides, oil cylinders and pneumatic cylinders. Most of their running tracks are single tracks with fixed running lengths. With the miniaturization of equipment, the compactness of production space and the maximization of mechanism utilization, when performing reciprocating operations with a certain stroke under conditions of limited space or small equipment, traditional linear modules are difficult to meet production requirements and cannot maximize the stroke in a small space. Utility Model Content

[0003] The purpose of the utility model is to provide a multiple-stroke reciprocating motion mechanism to address the deficiencies of the prior art, and the multiple-stroke reciprocating motion mechanism 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 reciprocating motion mechanism, comprising a first connecting arm; a second connecting arm and a third connecting arm are respectively slidably arranged on the front and rear surfaces of the first connecting arm; a first endless conveyor belt is movably arranged on the first connecting arm; the second connecting arm is fixedly connected to the front conveying surface of the first endless conveyor belt through a first connecting member; the third connecting arm is fixedly connected to the rear conveying surface of the first endless conveyor belt through a second connecting member; the mechanism also includes a power component that drives the first connecting arm to slide on the third connecting arm to drive the first endless conveyor belt to rotate; the first connecting member approaches or moves away from the second connecting member through the rotation of the first endless conveyor belt.

[0006] The multiple-stroke reciprocating motion mechanism described in the utility model is characterized in that the mechanism also includes an elastic member connecting the separated ends of the second connecting arm and the third connecting arm; the elastic member is arranged along the sliding direction of the second connecting arm.

[0007] The multiple-stroke reciprocating motion mechanism described in the utility model, wherein a first accommodating groove is provided on the third connecting arm corresponding to the first connecting arm; a first guide rail is provided on the bottom surface of the first accommodating groove along the length direction of the first connecting arm, and the first connecting arm is slidably arranged on the first guide rail.

[0008] The utility model describes a multiple-stroke reciprocating motion mechanism, wherein, a second accommodating groove is provided at one end of the first connecting arm away from the first guide rail corresponding to the second connecting arm; a second guide rail is provided on an end surface of the second connecting arm facing the first connecting arm along the length direction of the second connecting arm, and the first connecting arm slides in cooperation with the second guide rail.

[0009] The multiple-stroke reciprocating motion mechanism described in the utility model, wherein the power assembly includes a driving wheel and a driven wheel relatively arranged at both ends of the length direction of the first accommodating groove, and also includes a second annular conveyor belt that rotates with the driving wheel and the driven wheel, and a motor that drives the driving wheel to rotate; a third connecting piece is fixedly provided on the second annular conveyor belt, and the first connecting arm is fixedly connected to the third connecting piece.

[0010] The multiple-stroke reciprocating motion mechanism described in the utility model, wherein the first guide rail and the second guide rail are respectively located at the middle part of the third connecting arm and the middle part of the second connecting arm; the second annular conveyor belt and the elastic member are arranged side by side on the left and right sides of the first guide rail.

[0011] The multiple-stroke reciprocating motion mechanism described in the utility model is characterized in that an extension portion is provided on the third connecting arm toward the second connecting arm, and the second connecting member is fixed on the extension portion; the first annular conveyor belt and the second annular conveyor belt are arranged side by side along the length direction of the extension portion.

[0012] The multiple-stroke reciprocating motion mechanism of the utility model has two gears disposed at both ends of the first connecting arm in the length direction, and the first annular conveyor belt is rotatably matched with the two gears.

[0013] The multiple-stroke reciprocating motion mechanism described in the utility model, wherein the mechanism also includes a clamping claw detachably arranged at the free end of the second connecting arm, and a first sensor for detecting the material clamped by the clamping claw; the first sensor is located at the lower end of the third connecting arm.

[0014] The multiple-stroke reciprocating motion mechanism of the utility model is characterized in that a protrusion is arranged at one end of the second connecting arm away from the clamping claw; and a second sensor for detecting whether the protrusion is in place is arranged on the third connecting arm.

[0015] The beneficial effects of the utility model are as follows: in the utility model, the rear conveying surface of the first ring conveyor belt is fixed on the third connecting arm through the second connecting piece; when the power component drives the first connecting arm to slide on the third connecting arm, the first ring conveyor belt on the first connecting arm will rotate with the second connecting piece as the fixed point, and the front conveying surface of the first ring conveyor belt is connected to the second connecting arm through the first connecting piece, and the power component will drive the second connecting arm on the first connecting arm to move while driving the first connecting arm to move; the utility model realizes the multiple-stroke reciprocating motion of the second connecting arm by driving the single-stroke reciprocating motion of the first connecting arm, which can improve space utilization, reduce the overall volume of the equipment, and save production space. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] 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:

[0017] Figure 1 It is a schematic diagram of the overall structure of the multiple-stroke reciprocating motion mechanism of the utility model.

[0018] Figure 2 It is a side view schematic diagram of the multiple stroke reciprocating motion mechanism of the utility model.

[0019] Figure 3 It is a schematic diagram of the multiple stroke reciprocating motion mechanism of the utility model from a rear view perspective.

[0020] In the figure: 1, first connecting arm; 1a, second accommodating groove; 2, second connecting arm; 2a, second guide rail; 2b, protrusion; 3, third connecting arm; 3a, first accommodating groove; 3b, first guide rail; 3c, extension; 4, first endless conveyor belt; 5, first connecting member; 6, second connecting member; 7, elastic member; 8, driving wheel; 9, driven wheel; 10, second endless conveyor belt; 11, motor; 12, third connecting member; 13, gear; 14, clamping claw; 15, first sensor; 16, second sensor. DETAILED DESCRIPTION

[0021] 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 that includes 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.

[0022] 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.

[0023] "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.

[0024] 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.

[0025] 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.

[0026] The multiple stroke reciprocating motion mechanism of the preferred embodiment of the utility model is as follows Figure 1-3As shown, it includes a first connecting arm 1; a second connecting arm 2 and a third connecting arm 3 are slidably arranged on the front and rear surfaces of the first connecting arm 1 respectively; a first annular conveyor belt 4 is movably arranged on the first connecting arm 1; the second connecting arm 2 is fixedly connected to the front conveying surface of the first annular conveyor belt 4 through a first connecting member 5; the third connecting arm 3 is fixedly connected to the rear conveying surface of the first annular conveyor belt 4 through a second connecting member 6; the mechanism also includes a power component that drives the first connecting arm 1 to slide on the third connecting arm 3 to drive the first annular conveyor belt 4 to rotate; the first connecting member 5 approaches or moves away from the second connecting member 6 through the rotation of the first annular conveyor belt 4.

[0027] In this embodiment, the first connecting arm 1, the second connecting arm 2 and the third connecting arm 3 are all arranged longitudinally, the first connecting arm 1 is longitudinally slidably arranged on the third connecting arm 3, and the second connecting arm 2 is longitudinally slidably arranged on the first connecting arm 1; the conveying direction of the first endless conveyor belt 4 is consistent with the sliding direction of the first connecting arm 1; the third connecting arm 3 is fixed, and when the power assembly drives the first connecting arm 1 to move, since the first connecting arm 1 is provided with a second connecting member 6 fixed to the first endless conveyor belt 4, the first endless conveyor belt 4 will rotate with the second connecting member 6 as a fixed point, driving the first connecting member 5 on the other conveying surface Move, so that the first connecting member 5 approaches or moves away from the second connecting member 6, thereby driving the second connecting arm 2 to move up and down; the first connecting member 5 and the second connecting member 6 each include two plate-like members, and the two plate-like members are respectively pressed against the inner and outer side surfaces of the first endless conveyor belt 4; there is a rack on the inner wall of the first endless conveyor belt 4, and the two plate-like members are also provided with through grooves adapted to the rack, so that the plate-like members can be firmly engaged on the rack, and the two plate-like members are fixed to each other by riveting or threaded connection; a plate-like member in the first connecting member 5 is welded and fixed to the second connecting arm 2, and a plate-like member in the second connecting member 6 is welded and fixed to the third connecting arm 3.

[0028] In the utility model, the rear conveying surface of the first ring conveyor belt 4 is fixed on the third connecting arm 3 through the second connecting member 6; when the power component drives the first connecting arm 1 to slide on the third connecting arm 3, the first ring conveyor belt 4 on the first connecting arm 1 will rotate with the second connecting member 6 as the fixed point, and the front conveying surface of the first ring conveyor belt 4 is connected to the second connecting arm 2 through the first connecting member 5. When the power component drives the first connecting arm 1 to move, it will also drive the second connecting arm 2 on the first connecting arm 1 to move; the utility model realizes the multiple-stroke reciprocating motion of the second connecting arm 2 by driving the single-stroke reciprocating motion of the first connecting arm 1, which can improve space utilization, reduce the overall volume of the equipment, and save production space.

[0029] Preferably, the mechanism also includes an elastic member 7 connecting the separated ends of the first connecting arm 1 and the third connecting arm 3, and the elastic member 7 is arranged along the sliding direction of the first connecting arm 1; in this embodiment, the elastic member 7 is a spring, and the spring and the first annular conveyor belt 4 are respectively located on the left and right sides of the first connecting arm 1; when the first connecting arm 1 moves upward, it is also necessary to drive the second connecting arm 2 to move, which will cause a large loss of the first connecting arm 1. The setting of the spring can help it bear the weight of the second connecting arm 2, reduce energy loss, and extend the life of the first connecting arm 1; in addition, since the first connecting arm 1 and the second connecting arm 2 are affected by gravity when they move up and down, it is easy to rise slowly and fall quickly, which may cause uneven force on the mechanism and shaking; after the spring is set, the first connecting arm 1 is subjected to reverse tension when it descends, and is subjected to positive tension when it rises, which can balance the force well and reduce the adverse effects of the weight of the first connecting arm 1 and the second connecting arm 2 on the mechanism.

[0030] Preferably, a first accommodating groove 3a is provided on the third connecting arm 3 corresponding to the first connecting arm 1; a first guide rail 3b is provided on the bottom surface of the first accommodating groove 3a along the length direction of the first connecting arm 1, and the first connecting arm 1 is slidably set on the first guide rail 3b; the third connecting arm 3 provides an installation position for the entire mechanism, and the first connecting arm 1 can be accommodated in the first accommodating groove 3a of the third connecting arm 3 after moving upward.

[0031] Preferably, a second accommodating groove 1a is provided at one end of the first connecting arm 1 away from the first guide rail 3b corresponding to the second connecting arm 2; a second guide rail 2a is provided on an end surface of the second connecting arm 2 facing the first connecting arm 1 along the length direction of the second connecting arm 2, and the first connecting arm 1 and the second guide rail 2a are slidably matched; after the second connecting arm 2 moves upward, it can be accommodated in the second accommodating groove 1a of the first connecting arm 1, which can save space for the entire mechanism; the second guide rail 2a is hidden on the back of the second connecting arm 2; the running path of the first connecting arm 1 overlaps with the running path of the second connecting arm 2; the first guide rail 3b and the second guide rail 2a are arranged to overlap in the front-to-back direction, so that the operation is more stable.

[0032] Preferably, the power assembly includes a driving wheel 8 and a driven wheel 9 which are relatively arranged at both ends in the length direction of the first accommodating groove 3a, and also includes a second annular conveyor belt 10 that rotates with the driving wheel 8 and the driven wheel 9, and a motor 11 that drives the driving wheel 8 to rotate; a third connecting member 12 is fixedly provided on the second annular conveyor belt 10, and the first connecting arm 1 is fixedly connected to the third connecting member 12; the motor 11 drives the driving wheel 8 to rotate, and after the driving wheel 8 rotates, it drives the second annular conveyor belt 10 to rotate, thereby driving the driven wheel 9 to rotate, and the third connecting member 12 can drive the first connecting arm 1 fixed on the second annular conveyor belt 10 to move up and down; there is a rack on the inner wall of the second annular conveyor belt 10, and the driving wheel 8 and the driven wheel 9 are both meshed and connected with the second annular conveyor belt 10; in other embodiments, the power assembly can also use a linear module or a screw module in the prior art to directly drive the third connecting member 12 to move.

[0033] Preferably, the first guide rail 3b and the second guide rail 2a are respectively located in the middle of the third connecting arm 3 and the middle of the second connecting arm 2; the second annular conveyor belt 10 and the elastic member 7 are arranged side by side on the left and right sides of the first guide rail 3b; the first guide rail 3b and the second guide rail 2a are respectively located in the middle of the first connecting arm 1 and the second connecting arm 2, so that the operation is more stable; the second annular conveyor belt 10, the first guide rail 3b and the elastic member 7 are arranged closely, keeping the structure compact, and can reduce the overall volume of the mechanism.

[0034] Preferably, an extension portion 3c is provided on the third connecting arm 3 toward the second connecting arm 2, and the second connecting member 6 is fixed on the extension portion 3c; the first annular conveyor belt 4 and the second annular conveyor belt 10 are arranged side by side along the length direction of the extension portion 3c; the extension portion 3c on the third connecting arm 3 is to provide an installation position for the second connecting member 6 to avoid the second annular conveyor belt 10, so that the structure is more compact; the first annular conveyor belt 4 and the second annular conveyor belt 10 have the same movement paths, and the forces are more balanced, so that the operation of the mechanism is more stable.

[0035] Preferably, two gears 13 are respectively provided at both ends of the first connecting arm 1 in the length direction, and the first annular conveyor belt 4 is rotatably arranged on the two gears 13; the two gears 13 are meshingly connected with the first annular conveyor belt 4; the two gears 13 are both transversely arranged on the first connecting arm 1, and the first annular conveyor belt 4 and the elastic member 7 are respectively located on the left and right sides of the first connecting arm 1, so that the first connecting arm 1 is subjected to a more horizontal force and the overall structure is more compact.

[0036] Preferably, the mechanism also includes a clamping jaw 14 detachably provided at the free end of the second connecting arm 2, and a first sensor 15 for detecting the material clamped by the clamping jaw 14; the first sensor 15 is located at the lower end of the third connecting arm 3; in this embodiment, the clamping jaw 14 is detachably provided at the free end of the second connecting arm 2, the clamping jaw 14 is a prior art and can be replaced according to different clamped materials; the first sensor 15 is provided to judge the clamping situation, and the first sensor 15 can be an infrared sensor or a visual sensor; after the clamping jaw 14 clamps the material, the travel of the mechanism can be doubled to realize the material transfer within a certain working space.

[0037] Preferably, a protrusion 2b is provided at the end of the second connecting arm 2 facing away from the clamp; a second sensor 16 for detecting whether the protrusion 2b is in place is provided on the third connecting arm; the second sensor 16 can determine the movement state of the second connecting arm 2 by detecting whether the protrusion 2b is in place; in this embodiment, the second sensor 16 can be a contact sensor or a proximity sensor.

[0038] 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 reciprocating motion mechanism, characterized in that: It includes a first connecting arm; a second connecting arm and a third connecting arm are slidably arranged on the front and rear surfaces of the first connecting arm respectively; a first endless conveyor belt is movably arranged on the first connecting arm; the second connecting arm is fixedly connected to the front conveying surface of the first endless conveyor belt through a first connecting member; the third connecting arm is fixedly connected to the rear conveying surface of the first endless conveyor belt through a second connecting member; the mechanism also includes a power component that drives the first connecting arm to slide on the third connecting arm to drive the first endless conveyor belt to rotate; the first connecting member approaches or moves away from the second connecting member through the rotation of the first endless conveyor belt.

2. The multiple-stroke reciprocating motion mechanism according to claim 1, characterized in that: The mechanism further comprises an elastic member connecting the separated ends of the first connecting arm and the third connecting arm; the elastic member is arranged along the sliding direction of the first connecting arm.

3. The multiple-stroke reciprocating motion mechanism according to claim 2, characterized in that: A first accommodating groove is provided on the third connecting arm corresponding to the first connecting arm; a first guide rail is provided on the bottom surface of the first accommodating groove along the length direction of the first connecting arm, and the first connecting arm is slidably provided on the first guide rail.

4. The multiple-stroke reciprocating motion mechanism according to claim 3, characterized in that: A second accommodating groove is provided at one end of the first connecting arm away from the first guide rail corresponding to the second connecting arm; a second guide rail is provided on an end surface of the second connecting arm facing the first connecting arm along the length direction of the second connecting arm, and the first connecting arm is slidably matched with the second guide rail.

5. The multiple-stroke reciprocating motion mechanism according to claim 4, characterized in that: The power assembly includes a driving wheel and a driven wheel relatively arranged at both ends of the first accommodating groove in the length direction, and also includes a second annular conveyor belt rotatably cooperated with the driving wheel and the driven wheel, and a motor driving the driving wheel to rotate; a third connecting piece is fixedly provided on the second annular conveyor belt, and the first connecting arm is fixedly connected to the third connecting piece.

6. The multiple-stroke reciprocating motion mechanism according to claim 5, characterized in that: The first guide rail and the second guide rail are respectively located at the middle of the third connecting arm and the middle of the second connecting arm; the second endless conveyor belt and the elastic member are arranged side by side on the left and right sides of the first guide rail.

7. The multiple-stroke reciprocating motion mechanism according to claim 5, characterized in that: An extension portion is arranged on the third connecting arm toward the second connecting arm, and the second connecting member is fixed on the extension portion; the first endless conveyor belt and the second endless conveyor belt are arranged side by side along the length direction of the extension portion.

8. The multiple-stroke reciprocating motion mechanism according to claim 5, characterized in that: Two gears are respectively arranged at the two ends of the first connecting arm in the length direction, and the first annular conveyor belt is rotatably arranged on the two gears.

9. The multiple-stroke reciprocating motion mechanism according to claim 5, characterized in that: The mechanism also includes a clamping claw detachably arranged at the free end of the second connecting arm, and a first sensor for detecting the material clamped by the clamping claw; the first sensor is located at the lower end of the third connecting arm.

10. The multiple-stroke reciprocating motion mechanism according to claim 9, characterized in that: A protrusion is arranged at one end of the second connecting arm away from the clamping claw; and a second sensor for detecting whether the protrusion is in place is arranged on the third connecting arm.

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