A quick return pickup device capable of avoiding interference

Abstract

The present invention relates to the field of product transportation technology, and in particular to a quick-return picking device that can avoid interference, comprising: a mounting frame, a product rack is provided on one side of the mounting frame, a crank rocker mechanism is provided between the mounting frame and the product rack, and a conveyor belt is provided below the mounting frame, wherein the power source comprises: a motor, which is connected to a power supply component through a control switch. Compared with the prior art, the quick-return picking device that can avoid interference provided by the present invention has the following beneficial effects: the design of the present invention relies on only one power source to achieve multiple tasks, realizes telescopic movement in two directions at any angle, and the telescopic distance can be adjusted according to the position of the product rack or the conveyor belt. At the same time, the crank rocker mechanism in the device has a quick-return characteristic, which makes the average speed of the working stroke small, so that the working stroke is stable and the speed of the non-working stroke is accelerated, so as to shorten the non-working time and achieve the purpose of improving work efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of product transportation, and in particular to a quick-return picking device capable of avoiding interference. Background Art

[0002] I believe everyone is familiar with the term assembly line. In most factories, assembly line work often exists. The so-called factory assembly line is a working method with a clear division of labor. Sometimes a product needs to be processed in multiple steps in sequence. For example, the first step is carried out first. After the first step is completed, it is transported and then the second step is carried out, and so on until the product is completed. This method enables the factory to complete the task faster. Each step is operated by skilled people, which increases the factory's product production and reduces labor costs. Almost all the products in the current factory are completed under assembly line operations.

[0003] In the product transportation of most factories, with the development and innovation of technology, more and more work is becoming intelligent, and the product transfer work in workshops and factories is gradually moving from manual to mechanical automation. However, the following problems usually exist in existing workshop work: most products have different picking and releasing forces for different products. Regardless of the product, the picking and releasing forces are the same, which can easily damage some products, resulting in a high error rate and affecting the user experience. In addition, after the general picking mechanism grabs the product with the suction cup, it will directly rotate a certain angle and place the product on the conveyor belt, which may collide with other parts or the conveyor belt. Summary of the Invention

[0004] The purpose of the present invention is to overcome the problems existing in the above-mentioned prior art and provide a quick-return picking device that can avoid interference. The design of the present invention relies on only one power source to achieve multiple tasks, and realizes telescopic movement in both horizontal and vertical directions. The telescopic distance can be adjusted according to the position of the product rack or conveyor belt. At the same time, the crank rocker mechanism in the device has a quick-return characteristic, which makes the average speed of the working stroke small, so that the working stroke is stable and the non-working stroke speed is accelerated, so as to shorten the non-working time and achieve the purpose of improving work efficiency, thereby solving the above-mentioned problems.

[0005] The technical solution of the present invention is:

[0006] A quick-return pickup device capable of avoiding interference, comprising:

[0007] A mounting frame, a product rack is provided on one side of the mounting frame, a crank rocker mechanism is provided between the mounting frame and the product rack, and a conveyor belt is provided below the mounting frame;

[0008] The crank rocker mechanism includes: a plate body placed in a vertical direction, the plate body is fixed to the mounting frame; a crank, one end of which is hinged to the plate body, and the other end is hinged to one end of the connecting rod; a rocker, one end of which is hinged to the plate body, and the other end of the connecting rod is hinged to the middle of the rocker, a guide groove is provided on the right side of the rocker, a slide rod and a rotating shaft are provided on the slide groove, the slide rod rotates along the rotating shaft on the slide groove, and the notch of the slide rod is opposite to the arc groove on the slide groove; a sleeve rod is provided with a straight groove along the length direction thereof, a bearing and a suction cup fixing rod are provided in the straight groove, and a suction cup for grabbing the product is provided on the right side of the sleeve rod;

[0009] The suction cup fixing rod is fixed to the bearing, and the suction cup fixing rod and the bearing can move together in the straight groove of the sleeve rod. The bearing is fixed on the fixing rod, wherein the bearing passes through the grooves of the rocker arm, the slide groove, the sleeve rod, and the slide groove rod. When moving on the arc groove of the slide groove, the position of the bearing on the rocker arm and the sleeve rod remains unchanged, and the bearing moves with the rocker arm and the sleeve rod; when the straight groove of the slide groove and the slide groove rod moves, the bearing also moves in the straight grooves of the rocker arm and the sleeve rod.

[0010] Furthermore, the power source includes: a motor, which is connected to the power supply component through a control switch, the output direction of the motor is perpendicular to the plane, and the output end of the motor is connected to the crank.

[0011] Furthermore, the relationship between ɑ and β is determined as

[0012]

[0013] Where ɑ is the swing angle of the rocker, β is the maximum swing angle of the angle between the vertical guide rail of the slide and the guide rail of the slide rod, l1 is the length of the crank, l2 is the length of the connecting rod, a is the distance from the swing center of the rocker to the rotation center of the crank, and b is the distance from the swing center of the rocker to the connection point between the rocker and the connecting rod.

[0014] Furthermore, the size of ɑ is smaller than the size of β.

[0015] Furthermore, the angle bisector of β coincides with the angle bisector of ɑ.

[0016] Furthermore, the slide groove is marked with scales along the circumference.

[0017] Compared with the prior art, the present invention provides a quick return pickup device that can avoid interference, which has the following beneficial effects:

[0018] The design of the present invention relies on only one power source to achieve multiple tasks, and realizes telescopic movement in both horizontal and vertical directions. The telescopic distance can be adjusted according to the position of the product rack or conveyor belt. At the same time, the crank rocker mechanism in the device has a quick return characteristic, which makes the average speed of the working stroke small, so that the working stroke is stable and the non-working stroke speed is accelerated, thereby shortening the non-working time and achieving the purpose of improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention and its design scheme, the drawings required for this embodiment will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 Schematic diagram of the overall structure of the quick return pickup mechanism of the present invention;

[0021] Figure 2 Schematic diagram of the front view of the crank-rocker mechanism of the present invention;

[0022] Figure 3 A perspective view of the crank-rocker mechanism of the present invention;

[0023] Figure 4 Schematic diagram of the crank-rocker mechanism principle of the present invention;

[0024] Figure 5 Schematic diagram of the crank rocker mechanism trajectory of the present invention.

[0025] The above descriptions of the drawings are used to provide further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0026] The following is combined with Figure 1 To the attached Figure 5 , a detailed description of the specific embodiments of the present invention is provided. In the description of the invention, it should be understood that the terms "center," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction. Therefore, they should not be construed as limiting the present invention.

[0027] The terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the quantity of the technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include one or more of such features; and in the description of the invention, unless otherwise specified, "plurality" means two or more.

[0028] Example

[0029] like Figures 1 to 5 As shown, the present invention provides a quick-return picking device that can avoid interference, comprising: a mounting frame, a product rack is provided on one side of the mounting frame, a crank rocker mechanism is provided between the mounting frame and the product rack, and a conveyor belt is provided under the mounting frame; the crank rocker mechanism comprises: a plate body, which is placed in a vertical direction and is fixed to the mounting frame; a crank, one end of which is hinged to the plate body, and the other end is hinged to one end of a connecting rod; a rocker, one end of which is hinged to the plate body, and the other end of the connecting rod is hinged to the middle of the rocker, a guide groove is provided on the right side of the rocker, a slide rod and a rotating shaft are provided on the slide rod, and the slide rod moves along the rotating shaft on the slide When the shaft rotates, the notch of the slide rod is opposite to the arc groove on the slide; the sleeve rod has a straight groove along its length, and a bearing and a suction cup fixing rod are arranged in the straight groove, and a suction cup for grabbing the product is arranged on the right side of the sleeve rod; the suction cup fixing rod is fixed to the bearing, and the suction cup fixing rod and the bearing can move together in the straight groove of the sleeve rod, and the bearing is fixed on the fixing rod, wherein the bearing passes through the groove of the rocker arm, slide groove, sleeve rod and slide rod. When moving on the arc groove of the slide groove, the position of the bearing on the rocker arm and sleeve rod remains unchanged, and the bearing moves with the rocker arm and sleeve rod; when the straight groove of the slide groove and the slide rod moves, the bearing also moves in the straight groove of the rocker arm and sleeve rod.

[0030] Furthermore, the power source includes: a motor, which is connected to the power supply component through a control switch, the output direction of the motor is perpendicular to the plane, and the output end of the motor is connected to the crank.

[0031] Furthermore, the relationship between ɑ and β is determined as

[0032]

[0033] Where ɑ is the swing angle of the rocker, β is the maximum swing angle of the angle between the vertical guide rail of the slide and the guide rail of the slide rod, l1 is the length of the crank, l2 is the length of the connecting rod, a is the distance from the swing center of the rocker to the rotation center of the crank, and b is the distance from the swing center of the rocker to the connection point between the rocker and the connecting rod.

[0034] Furthermore, the size of ɑ is smaller than the size of β.

[0035] Furthermore, the angle bisector of β coincides with the angle bisector of ɑ.

[0036] Furthermore, the extreme positions of the rocker swing are A and B respectively.

[0037] Furthermore, the slide groove is marked with scales along the circumference, and the scales are used for facilitating reading by an operator when adjusting the size of β.

[0038] The bearing 6 is fixed to the suction cup fixing rod 7, and the suction cup fixing rod 7 and the bearing 6 can move together in the straight groove of the sleeve rod 5. When the crank 1 drives the rocker 3 to swing, the sliding groove of the rocker 3 drives the bearing 6, the suction cup fixing rod 7, and the sleeve rod 5 to move along the guide rail of the slide 4. When the bearing 6 moves to the position of the slide rod 8, the bearing 6 and the suction cup fixing rod 7 follow the sliding groove of the rocker 3 and move along the guide rail of the slide rod 8. When the bearing 6 and the suction cup fixing rod 7 move on the vertical guide rail of the slide 4 and the guide rail of the slide rod 8, it is equivalent to the suction cup 9 performing telescopic movement.

[0039] In this device, the rocker 3 drives the bearing 6 and the suction cup fixing rod 7 to move so that the suction cup 9 and the product are first retracted for a distance. After the bearing 6 returns to the guide rail of the chute 4, the suction cup 9 rotates again by an angle β, and after reaching the vertical guide rail of the chute 4, it moves along the vertical track to the conveyor belt to put the product down. This can avoid collision and interference between the product and other components or the conveyor belt during the picking and transportation process.

[0040] The working process of the present invention is as follows: During operation, the suction cup fixing rod 7 drives the suction cup 9 to extend rightward to the product rack to pick up the workpiece, then retract to the left, rotate β degrees to the left, and then extend downward, releasing the workpiece to the conveyor belt and returning to the initial position. Alternatively, the direction is reversed, and the suction cup picks up the workpiece downward, then retracts and then rotates to the right and extends, and finally releases the workpiece on the product rack. The specific method for determining the angle is as follows: Assuming that the extreme positions of the swing of the rocker 3 are A and B respectively, the angle is ɑ, the length of the crank 1 is l1, the length of the connecting rod 2 is l2, the distance from the swing center of the rocker 3 to the rotation center of the crank 1 is a, the distance from the swing center to the connection point of the rocker and the connecting rod is b, and the guide rail angle is β. First, the size of β is determined according to the product position. The slide 4 is marked with a scale. The size of β can be changed by adjusting the position of the slide 4 or the slide rod 8 according to actual conditions. If the product is transported from a location at the same height as the mechanism onto a horizontal conveyor, β = 90°. If the product is above the mechanism, the product rack can be tilted at a certain angle θ. This allows the product to automatically slide onto the suction cup due to its own weight. Based on the tilt angle θ, β = 90° + θ. If the product is below the mechanism, β = 90° - θ. The same equation applies to the product below the mechanism, where β = 90° - θ. The swing angle ɑ of the rocker 3 is then calculated using the formula. This angle must be less than β, otherwise it will become stuck. Furthermore, the angle bisectors of β and ɑ are aligned, which allows us to determine the location of ɑ and the swing center of the rocker 3. When picking up a workpiece, the crank 1 and connecting rod 2 in the mechanism cause the rocker 3 to swing. The suction cup fixing rod 7 follows the sleeve rod 5 in the narrow slot of the chute 4 and the chute rod 8. A bearing 6 in the suction cup fixing rod follows the suction cup fixing rod in the straight slot of the rocker 3, the fixed guide rail of the chute 4, and the straight slot of the chute rod 8.

[0041] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

[0042] The present invention and its embodiments are described above. This description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by this and, without departing from the purpose of the present invention, designs structures and embodiments similar to this technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. A quick return pickup device that can avoid interference, characterized in that: include: A mounting frame (10), a product frame (13) being provided on one side of the mounting frame (10), a crank rocker mechanism being provided on the mounting frame (10) and the product frame (13), and a conveyor belt (12) being provided below the mounting frame (10); The crank rocker mechanism comprises: a plate body placed in a vertical direction, the plate body being fixed to the mounting frame (10); a crank (1), one end of which is hinged to the plate body, and the other end of which is hinged to one end of the connecting rod (2); a rocker (3), one end of which is hinged to the plate body, and the other end of the connecting rod (2) is hinged to the middle of the rocker (3), a guide groove is provided on the right side of the rocker (3), a slide groove rod (8) and a rotating shaft are provided on the slide groove (4), and the slide groove rod (8) rotates along the rotating shaft on the slide groove (4); a sleeve rod (5), a straight groove is provided on the sleeve rod along the length direction, a bearing (6) and a suction cup fixing rod (7) are provided in the straight groove, and a suction cup (9) for grabbing the product is provided on the right side of the sleeve rod (5); The suction cup fixing rod (7) is fixed to the bearing (6), and the suction cup fixing rod (7) and the bearing (6) move together in the straight groove of the sleeve rod (5). The bearing (6) is fixed on the fixing rod (7). When it moves on the arc groove of the slide groove (4), the position of the bearing (6) on the rocker (3) and the sleeve rod (5) remains unchanged, and the bearing (6) moves together with the rocker (3) and the sleeve rod (5); when the slide groove (4) and the straight groove of the slide groove rod (8) move, the bearing (6) also moves in the straight groove of the rocker (3) and the sleeve rod (5).

2. The interference-avoiding quick-return pickup device according to claim 1, wherein: Power sources include: The motor (11) is connected to the power supply assembly via a control switch.

3. The interference-avoiding quick-return pickup device according to claim 1, wherein: The swing angle of the rocker (3) is ɑ, the swing angle of the sleeve (5) is β, and the relationship between ɑ and β is determined as follows: ， Wherein, ɑ is the swing angle of the rocker (3), β is the angle between the vertical guide rail of the chute (4) and the guide rail of the chute rod (8), l1 is the length of the crank (1), l2 is the length of the connecting rod (2), a is the distance from the swing center of the rocker (3) to the rotation center of the crank (1), and b is the distance from the swing center of the rocker (3) to the connection point between the rocker (3) and the connecting rod (2).

4. The interference-avoiding quick-return pickup device according to claim 3, wherein: The size of ɑ is smaller than that of β.

5. The interference-avoiding quick-return pickup device according to claim 3, wherein: The angle bisector of β coincides with the angle bisector of ɑ.

6. The interference-avoiding quick-return pickup device according to claim 1, wherein: The slide groove (4) is marked with scale along the circumferential direction.

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