Material carrying distance adjusting device and processing equipment

Abstract

The utility model provides a material carrying distance adjusting device and processing equipment. A rotating arm is driven by a driving mechanism to swing back and forth; a fixed material taking and placing mechanism and a movable material taking and placing mechanism are arranged at the free end of the rotating arm in the extending direction of the rotating arm at intervals. The movable material taking and placing mechanism reciprocates in the extension direction of the rotating arm through the variable-pitch module; the variable pitch module comprises a fixed wheel, a linear guide module, a pull rope and an elastic body; when the swing arm direction of the rotating arm is the same as the winding direction of the pull rope, the winding part of the pull rope is increased, and the movable material taking and placing mechanism moves in the direction close to the rotating center along with the movable end; when the swing arm direction of the rotating arm is opposite to the winding direction of the pull rope on the fixed wheel, the winding part of the pull rope is reduced, and the movable material taking and placing mechanism is pulled by the elastic body in the direction away from the rotating center along with the movable end. According to the utility model, the distance between the materials can be adjusted in the carrying process without adding extra power.

Description

Technical Field

[0001] The utility model belongs to the technical field of laser processing equipment, and specifically relates to a material handling spacing adjustment device and processing equipment. Background Art

[0002] With the continuous development of photovoltaic solar cells, the types of silicon wafer sizes are also increasing, among which half-wafers account for a large proportion. The current half-wafer basket style is basically two half-wafers placed side by side. When the half-wafer is processed in different processes, especially the laser process, the spacing of the two half-wafers taken out of the basket needs to be adjusted to shorten the gap between the two silicon wafers and ensure that the laser processing area is as small as possible, so as to improve the processing accuracy and be compatible with larger silicon wafers.

[0003] When transferring silicon wafers to the processing station, it is conventional to use a robot to carry two and a half silicon wafers while adjusting the distance between the silicon wafers. The existing technology requires adding a cylinder drive structure to the robot, but this method has two problems. First, after adding the cylinder drive structure, the inertia of the robot will increase significantly, which will reduce its carrying speed and thus affect the equipment production capacity. Second, since the robot's handling frequency is very high, it will move about 200,000 times a day, the cylinder will be worn out very quickly and needs to be replaced regularly, which will increase the equipment maintenance cost and reduce the equipment utilization rate. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a material handling spacing adjustment device and processing equipment, which can realize the spacing adjustment of materials during the handling process without adding additional power.

[0005] The utility model adopts the following technical solution to solve the above technical problems: a material handling spacing adjustment device, comprising a base and a driving mechanism arranged in the base; a rotating arm reciprocates under the drive of the driving mechanism;

[0006] A group of material picking and placing mechanisms are arranged at intervals at the free end of the rotating arm along the extending direction of the rotating arm, and the material picking and placing mechanisms include a fixed material picking and placing mechanism and a mobile material picking and placing mechanism; wherein the fixed material picking and placing mechanism is fixedly connected to the rotating arm, and the mobile material picking and placing mechanism reciprocates along the extending direction of the rotating arm through a variable pitch module;

[0007] A fixed wheel is fixed on the base, and the variable pitch module includes a linear guide module, a pull rope and an elastic body; wherein the linear guide module is arranged along the extension direction of the rotating arm, and a mobile end connected to the mobile material picking and placing mechanism is provided on the linear guide module; one end of the pull rope is fixed on the fixed wheel, and is wound around the fixed wheel in a winding direction, and the other end is led out along the winding direction and fixedly connected to the mobile end; one end of the elastic body is fixedly connected to the mobile end, and the other end of the elastic body is fixedly connected to the rotating arm, and the other end of the elastic body and the rotation center of the rotating arm are respectively located on both sides of the mobile end;

[0008] When the swing direction of the rotating arm is the same as the winding direction of the pull rope, the winding part of the pull rope increases, and the mobile material picking and placing mechanism moves toward the direction close to the rotation center along with the mobile end; when the swing direction of the rotating arm is opposite to the winding direction of the pull rope on the fixed wheel, the winding part of the pull rope decreases, and the mobile material picking and placing mechanism is pulled toward the direction away from the rotation center by the elastic body along with the mobile end.

[0009] According to the above scheme, the elastic body is always in a stretched state.

[0010] According to the above scheme, the linear guide module is a slide rail module composed of a slide rail and a slider. The slide rail is fixed on the rotating arm along the extension direction of the rotating arm, and the slider slidably connected along the slide rail is the moving end.

[0011] According to the above scheme, the fixed wheel is located above the rotating arm, the set of material taking and placing mechanisms is located below the rotating arm, and the rotating arm is provided with a hollow;

[0012] A connecting block is provided on the top of the mobile material picking and placing mechanism, and the connecting block passes through the hollow and is connected to the mobile end;

[0013] The other end of the pull rope and one end of the elastic body are both fixed on the connecting block.

[0014] According to the above scheme, the group of material picking and placing mechanisms is a suction cup module, the fixed material picking and placing mechanism is a fixed suction cup, and the movable material picking and placing mechanism is a movable suction cup.

[0015] According to the above scheme, the rotating arms include at least two, which are arranged at an angle with the rotation center as the vertex; and one variable pitch module is arranged on each rotating arm.

[0016] According to the above scheme, the pull rope is fixed at different heights of the fixed wheel and is wound in the guide groove at the corresponding height.

[0017] According to the above scheme, the rotating arm includes a first rotating arm and a second rotating arm, a group of material picking and placing mechanisms of the first rotating arm reciprocates between the first station and the second station, and a group of material picking and placing mechanisms of the second rotating arm reciprocates between the second station and the third station; wherein,

[0018] The winding directions of the pull ropes of the variable pitch modules corresponding to the first rotating arm and the second rotating arm are opposite; the relationship between the winding direction of the pull rope and the rotation direction of the rotating arm is such that: when the material picking and placing mechanism is located at the second workstation, the distance between the fixed material picking and placing mechanism and the mobile material picking and placing mechanism is the smallest; when the material picking and placing mechanism is located at the first or third workstation, the distance between the fixed material picking and placing mechanism and the mobile material picking and placing mechanism is the largest.

[0019] According to the above scheme, the rotating arm includes a main arm and at least two branch arms extending from the main arm, and each branch arm is provided with a set of material taking and placing mechanisms;

[0020] Each branch arm corresponds to a variable distance module; the rotating arm is provided with a guide wheel for adjusting the direction of the pull rope.

[0021] A processing equipment comprises the material handling spacing adjustment device, a material conveying device and a processing table; wherein the material conveying device is provided with a material picking and / or placing position, and a group of material picking and placing mechanisms of the rotating arm reciprocate between the material picking and / or placing position and the processing table.

[0022] The beneficial effects of the utility model are:

[0023] 1. The total length of the pull rope remains unchanged, and the elastic body connected to the pull rope is always in a stretched state, so that the other parts of the pull rope except the winding part are always in a straightened state; during the swinging process of the rotating arm, the end of the pull rope connected to the mobile end swings with the rotating arm, thereby affecting the length of the pull rope wound on the fixed wheel. By utilizing the change in the winding length of the pull rope, the mobile end moves back and forth along the linear guide module, and the mobile material picking and placing mechanism also moves back and forth, so that the mobile material picking and placing mechanism and the fixed material picking and placing mechanism are brought close to or away from each other, and finally the material distance is changed during the swinging process of the rotating arm.

[0024] 2. The number of rotating arms can be multiple and arranged at an angle with the rotation center of the rotating arm as the vertex, so as to realize simultaneous variable-distance transmission between several workstations.

[0025] 3. The rotating arm can be bifurcated into several arms, so as to realize the variable-distance transmission of several pieces of materials at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural axonometric diagram of a material handling spacing adjustment device according to one embodiment of the utility model.

[0027] Figure 2 It is a structural top view of a material handling spacing adjustment device according to an embodiment of the utility model.

[0028] Figure 3 This is a structural top view of another state of the material handling spacing adjustment device according to one embodiment of the utility model.

[0029] Figure 4 This is a schematic diagram of the structure of a processing equipment according to an embodiment of the utility model.

[0030] Figure 5 This is a top view of the material handling spacing adjustment device structure according to another embodiment of the present utility model.

[0031] In the figure:

[0032] 1-Material handling spacing adjustment device, 2-Loading conveyor belt, 3-Rotary processing table, 4-Unloading conveyor belt;

[0033] 10-motor seat;

[0034] 20-motor;

[0035] 30-rotating arm, 31-first rotating arm, 311-first sub-arm of the first rotating arm, 312-second sub-arm of the first rotating arm, 32-second rotating arm, 321-first sub-arm of the second rotating arm, 322-second sub-arm of the second rotating arm;

[0036] 40-suction cup module, 41-fixed suction cup, 411-first fixed suction cup, 412-second fixed suction cup, 42-movable suction cup, 420-connecting block, 421-first movable suction cup, 422-second movable suction cup;

[0037] 50-variable pitch module, 51-fixed wheel, 52-pull rope, 521-first pull rope, 522-second pull rope, 53-linear guide module, 531-first linear guide module, 532-second linear guide module, 54-spring, 541-first spring, 542-second spring, 55-guide wheel. DETAILED DESCRIPTION

[0038] The utility model discloses a material handling spacing adjustment device, which can adjust the material spacing without adding any other power source.

[0039] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0040] It should be understood that the schematic drawings are not drawn to scale. Reference to "embodiments" herein means that the specific features, structures, or characteristics described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations 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.

[0041] Embodiment 1:

[0042] See also Figures 1 to 3 This embodiment provides a material handling spacing adjustment device, including a motor base 10 and a motor 20 disposed in the base, wherein the output end of the motor 20 is upward and connected to the rotation center of a rotating arm 30, and the rotating arm 30 reciprocates around the rotation center under the drive of the motor 20. The motor base 10 may be a base of other forms, and the motor 20 may also use other rotary drive actuators, such as a rotary cylinder, etc.; a transmission mechanism may also be disposed between the output end of the motor 20 and the rotation center.

[0043] The rotating arm 30 includes a first rotating arm 31 and a second rotating arm 32, which are arranged at 90 degrees with the rotation center as the vertex, or at other angles. The first rotating arm 31 includes a main arm connected to the motor output shaft, and a first rotating arm first branch arm 311 and a first rotating arm second branch arm 312 extending from the main arm; similarly, the second rotating arm 32 includes a main arm connected to the motor output shaft, and a second rotating arm first branch arm 321 and a second rotating arm second branch arm 322 extending from the main arm. Figures 1 to 3 The first arm 311 and the second arm 312 of the first rotating arm are arranged in parallel, and the first arm 321 and the second arm 322 of the second rotating arm are arranged in parallel. The first arm and the second arm may also be arranged in non-parallel.

[0044] The free end of each branch arm is provided with a set of material picking and placing mechanisms at intervals along the extension direction of the rotating arm. This embodiment is used to transport solar cells, and a suction cup module 40 is used as a material picking and placing mechanism. Other forms of picking and placing mechanisms, such as mechanical claws, may also be used. The suction cup module 40 includes a fixed suction cup 41 and a movable suction cup 42; the first fixed suction cup 411 is fixed under the two branches of the first rotating arm, and the second fixed suction cup 421 is fixed under the two branches of the second rotating arm; the first movable suction cup 421 is arranged under the two branches of the first rotating arm, and the second movable suction cup 422 is arranged under the two branches of the second rotating arm, and the reciprocating movement along the extension direction of the rotating arm is realized through the variable distance module 50.

[0045] A fixed wheel 51 is fixed on the motor seat 10. The variable pitch module 50 includes a linear guide module 53, a pull rope 52 and a spring 54. The linear guide module 53 is arranged along the extension direction of the rotating arm, and a mobile end connected to the mobile suction cup 42 is provided on the linear guide module 53; the pull rope 52 has a fixed end, usually one end is fixed on the fixed wheel 51, and is wound on the fixed wheel 51 in a winding direction, and the other end is led out along the winding direction and fixedly connected to the mobile end; one end of the spring 54 is fixedly connected to the mobile end, and the other end of the spring 54 is fixedly connected to the rotating arm 30, and the other end of the spring 54 and the rotation center of the rotating arm 30 are respectively located on both sides of the mobile end. The spring 54 is always in a stretched state, so that the pull rope is always in a taut state, that is, there will be no loose rope state.

[0046] In this embodiment, the first linear guide module 531 is arranged above the two arms of the first rotating arm, including a slide rail and a slider (i.e., a moving end) moving along the slide rail, and a hollow is provided on the arm, and the slider is connected to the first moving suction cup 421 through the connecting block 420. The first pull rope 521 is wound around the fixed wheel 51 in a clockwise direction, and the other end is led out along the winding direction and connected to the connecting block 420.

[0047] The second linear guide module 532 is arranged above the two arms of the second rotating arm, including a slide rail and a slider moving along the slide rail, and the arm is provided with a hollow, and the slider is connected to the second movable suction cup 422 through the connecting block 420. The second pull rope 522 is wound around the fixed wheel 51 counterclockwise, and the other end is led out along the winding direction and connected to the connecting block 420.

[0048] In this embodiment, the fixed wheel 51 is arranged above the rotating arm and on the same axis as the rotation center. One quarter of the circumference of the fixed wheel 51 is exactly equal to the distance that the movable suction cup 42 moves relative to the fixed suction cup 41. The pull rope 52 is wound around a position not less than one quarter of the circumference of the fixed wheel 51 to achieve control of the moving distance of the movable suction cup 42 relative to the fixed suction cup 41.

[0049] The present application is not limited thereto, the fixed wheel 51 can be set at other positions close to the rotation center, and its circumference can also be set according to the moving distance of the movable suction cup 42 relative to the fixed suction cup 41. The rotation of the rotating arm 30 is not limited to 90 degrees, but can also be other angles, and the length of the pull rope 52 wound around the fixed wheel can also be set as needed.

[0050] Please continue to see Figure 1 There are multiple pull ropes. In order to avoid mutual interference between the pull ropes, the pull ropes are fixed at different heights of the fixed wheel 51 and are wound in guide grooves of corresponding heights.

[0051] When the arm swings counterclockwise, Figure 3 becomes Figure 2In this state, the rotating arm rotates a quarter of a circle, the winding portion of the first pull rope 521 is reduced by a quarter of the circumference of the fixed wheel, and under the pulling of the first spring 541, the first movable suction cup 421 moves along with the slider in the direction away from the rotation center by a quarter of the circumference of the fixed wheel, thereby getting closer to the first fixed suction cup 411 on the outside; the winding portion of the second pull rope 522 increases, and under the pulling of the pull rope, the second movable suction cup 422 moves along with the slider in the direction close to the rotation center by a quarter of the circumference of the fixed wheel, thereby moving away from the second fixed suction cup 412 on the outside, and at this time, the stretching length of the second spring 542 is greater.

[0052] When the arm swings clockwise, Figure 2 becomes Figure 3 state, the winding states of the first pull rope 521 and the second pull rope 522 are just opposite.

[0053] Preferably, a plurality of guide wheels 55 may be provided on the rotating arm 30 to guide the direction of the pull rope 52 .

[0054] Of course, the first pull rope 521 and the second pull rope 522 can also be wound in the same direction on the fixed wheel 51. For example, when both pull ropes are wound clockwise or counterclockwise, the distance between the movable suction cup 42 and the fixed suction cup 41 correspondingly arranged on the first rotating arm 31 and the second rotating arm 32 increases or decreases synchronously.

[0055] In the above embodiments, the movable suction cup 42 is described as being closer to the rotation center than the fixed suction cup 41, but the present application is not limited thereto. The movable suction cup 42 may be arranged farther away from the rotation center relative to the fixed suction cup 41, and the principle of its approaching and moving away from the fixed suction cup can be found in the above description.

[0056] On the other hand, the present application also provides a processing device, such as Figure 4 As shown, it includes a loading conveyor belt 3, a unloading conveyor belt 4 and a rotary processing table 2. The material handling spacing adjustment device 1 of the present application is arranged between the loading conveyor belt 3, the unloading conveyor belt 4 and the rotary processing table 2. Specifically, the material position of the loading conveyor belt 3 and the material placement of the unloading conveyor belt 4 are arranged in parallel, and the rotary processing table 2 is arranged between the ends of the two. The material handling spacing adjustment device 1 is arranged at a position surrounded by the loading conveyor belt 3, the unloading conveyor belt 4 and the rotary processing table 2. The first rotating arm 31 and the second rotating arm 32 can reciprocate 90 degrees between the loading conveyor belt 3 and the rotary processing table 2, and between the rotary processing table 2 and the unloading conveyor belt 4, respectively. During the loading process, the distance between the two solar cells that are farther apart is reduced, and during the unloading process, the distance between the two solar cells that are reduced is increased, so as to meet the larger spacing between loading and unloading to adapt to the transmission and flower basket, and the smaller spacing during processing to meet the requirements of the processing width.

[0057] The rotary processing table 2 is a prior art in the art, including one or more processing tables, and can be rotated to a loading station and a processing station, where materials are loaded and unloaded, and processed at the processing station. This is a prior art and will not be described in detail here. A laser processing module is set above the processing station, and the material to be processed is processed by the laser processing module.

[0058] The loading conveyor belt 3 and the unloading conveyor belt 4 are also prior art and can also be replaced by other conveying mechanisms.

[0059] Embodiment 2:

[0060] The principle and structure of this embodiment are basically the same as those of the first embodiment, except that: Figure 5 As shown, a set of suction cup modules are disposed on the first rotating arm 31 and the second rotating arm 32, but there are no branch arms.

[0061] It can be seen from the combination of the first embodiment and the second embodiment that the number of rotating arms, whether each rotating arm has a branch arm, and the number of branch arms can be increased or decreased according to actual needs.

[0062] The utility model adds a variable pitch module composed of a fixed wheel, a linear guide module, a pull rope and an elastic body, without adding any other power (such as a cylinder), and can achieve the variable pitch of materials only by the process of swinging the arm. Since the mass of the pull rope can be basically ignored, the variable pitch module has a simple and light structure and does not increase the inertia of the swing arm, making the swing arm more flexible, increasing the handling speed, and thus improving the equipment capacity.

[0063] 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 material handling spacing adjustment device, comprising a base and a driving mechanism disposed in the base; a rotating arm reciprocates under the drive of the driving mechanism; characterized in that: A group of material picking and placing mechanisms are arranged at intervals at the free end of the rotating arm along the extending direction of the rotating arm, and the material picking and placing mechanisms include a fixed material picking and placing mechanism and a mobile material picking and placing mechanism; wherein the fixed material picking and placing mechanism is fixedly connected to the rotating arm, and the mobile material picking and placing mechanism reciprocates along the extending direction of the rotating arm through a variable pitch module; A fixed wheel is fixed on the base, and the variable pitch module includes a linear guide module, a pull rope and an elastic body; wherein the linear guide module is arranged along the extension direction of the rotating arm, and a mobile end connected to the mobile material picking and placing mechanism is provided on the linear guide module; one end of the pull rope is fixed on the fixed wheel, and is wound around the fixed wheel in a winding direction, and the other end is led out along the winding direction and fixedly connected to the mobile end; one end of the elastic body is fixedly connected to the mobile end, and the other end of the elastic body is fixedly connected to the rotating arm, and the other end of the elastic body and the rotation center of the rotating arm are respectively located on both sides of the mobile end; When the swing direction of the rotating arm is the same as the winding direction of the pull rope, the winding part of the pull rope increases, and the mobile material picking and placing mechanism moves toward the direction close to the rotation center along with the mobile end; when the swing direction of the rotating arm is opposite to the winding direction of the pull rope on the fixed wheel, the winding part of the pull rope decreases, and the mobile material picking and placing mechanism is pulled toward the direction away from the rotation center by the elastic body along with the mobile end.

2. The material handling spacing adjustment device according to claim 1, characterized in that: The elastic body is always in a stretched state.

3. The material handling spacing adjustment device according to claim 1, characterized in that: The linear guide module is a slide rail module composed of a slide rail and a slider. The slide rail is fixed on the rotating arm along the extending direction of the rotating arm, and the slider slidably connected along the slide rail is the moving end.

4. The material handling spacing adjustment device according to claim 1, characterized in that: The fixed wheel is located above the rotating arm, the set of material taking and placing mechanisms is located below the rotating arm, and the rotating arm is provided with a hollow; A connecting block is provided on the top of the mobile material picking and placing mechanism, and the connecting block passes through the hollow and is connected to the mobile end; The other end of the pull rope and one end of the elastic body are both fixed on the connecting block.

5. The material handling spacing adjustment device according to claim 1, characterized in that: The set of material picking and placing mechanisms is a suction cup module, the fixed material picking and placing mechanism is a fixed suction cup, and the movable material picking and placing mechanism is a movable suction cup.

6. The material handling spacing adjustment device according to claim 1, characterized in that: The rotating arms include at least two, which are arranged at an angle with the rotating center as the vertex; and one variable pitch module is arranged on each rotating arm.

7. The material handling spacing adjustment device according to claim 6, characterized in that: The pull rope is fixed at different heights of the fixed wheel and wound in the guide groove at the corresponding height.

8. The material handling spacing adjustment device according to claim 6, characterized in that: The rotating arm comprises a first rotating arm and a second rotating arm, a group of material picking and placing mechanisms of the first rotating arm reciprocates between the first station and the second station, and a group of material picking and placing mechanisms of the second rotating arm reciprocates between the second station and the third station; wherein, The winding directions of the pull ropes of the variable pitch modules corresponding to the first rotating arm and the second rotating arm are opposite; the relationship between the winding direction of the pull rope and the rotation direction of the rotating arm is such that: when the material picking and placing mechanism is located at the second workstation, the distance between the fixed material picking and placing mechanism and the mobile material picking and placing mechanism is the smallest; when the material picking and placing mechanism is located at the first or third workstation, the distance between the fixed material picking and placing mechanism and the mobile material picking and placing mechanism is the largest.

9. The material handling spacing adjustment device according to any one of claims 1 to 8, characterized in that: The rotating arm comprises a main arm and at least two branch arms extending from the main arm, and each branch arm is provided with a set of material taking and placing mechanisms; Each branch arm corresponds to a variable distance module; the rotating arm is provided with a guide wheel for adjusting the direction of the pull rope.

10. A processing equipment, characterized in that: It comprises the material handling spacing adjustment device as described in any one of claims 1 to 9, and also comprises a material conveying device and a processing table; wherein the material conveying device is provided with a material picking and / or placing position, and a group of material picking and placing mechanisms of the rotating arm reciprocate between the material picking and / or placing position and the processing table.

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