Unpowered small workpiece overturning and shifting device

Abstract

The invention discloses an unpowered small workpiece overturning and shifting device which comprises a base, a supporting plate is obliquely arranged on the base, positioning plates are symmetrically arranged on the two sides of the supporting plate, V-shaped grooves and arc-shaped grooves are formed in the positioning plates, and supporting arms are arranged on the front portions of the two positioning plates. The supporting arm, the positioning plate and the base form a U-shaped positioning structure used for supporting the workpiece and allowing a clamping jaw of a clamp for clamping the workpiece to enter and exit. According to the unpowered small workpiece overturning and shifting device, the supporting plate, the positioning plate and the supporting arm are arranged on the base and can be used for containing disc type workpieces, shaft type workpieces and stepped shaft type workpieces correspondingly, the clamp grabs the workpieces from another angle or position, overturning and shifting of the workpieces are achieved, the structure is simple, power is not needed, and the unpowered small workpiece overturning and shifting device is convenient to use. And the turnover device can be used for turnover and displacement of various types of workpieces, and the efficiency of a production line is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of automated mechanical processing, and more specifically to a non-powered small workpiece turning and shifting device. Background Art

[0002] In the automated turning and grinding production line for small workpieces, the articulated robot is responsible for transporting the workpiece from the fixed position to the processing equipment. For different processing procedures of the same workpiece, the direction of the workpiece may need to be adjusted during the transportation process, that is, flipped. Flipping can change the loading and unloading direction of the workpiece and perform flipping processing. The quality of its design directly affects the operating efficiency of the entire automated production line and is an indispensable and important part of the production line.

[0003] There are many ways to achieve workpiece flipping. One way is for the robot to place the workpiece on the flipping mechanism and then re-grasp it from the other side to complete the flipping. For example, for shaft workpieces, the robot can grab one end of the workpiece, place it in a positioning groove that matches the shaft diameter or the pneumatic gripper of the flipping mechanism, and then grip the workpiece from the other end to complete the flipping. Another way is to use the flipping mechanism's own power mechanical structure to complete the flipping of the workpiece, and then the robot takes away the flipped workpiece. For example, for disc-type workpieces, the robot will place the workpiece in the pneumatic gripper of the flipping mechanism, the flipping mechanism will exchange the workpiece to the gripper on the other side, and finally the robot will take the flipped workpiece.

[0004] Patent document CN217668737U discloses a flipping and positioning device for robot processing, including a base, a placing table is arranged above the base, a turntable is arranged on the placing table, a connecting shaft is arranged below the turntable, a first gear ring is arranged on the connecting shaft, a bearing seat is arranged below the connecting shaft, a first motor is arranged behind the bearing seat, a first gear is arranged at the output end of the first motor, brackets are arranged on both sides of the placing table, a slider is arranged between the brackets on the same side of the placing table, a connecting seat is arranged below the slider, and a hydraulic cylinder is arranged below the connecting seat. The flipping and positioning device for robot processing described in the utility model is convenient for flipping and positioning workpieces of various specifications, and has a wide range of applications; it is convenient for flipping workpieces at multiple angles, has good stability, and can improve processing accuracy and efficiency; it is easy to disassemble and assemble, simple to use and maintain, and has low cost.

[0005] Since a production line usually needs to handle different processing techniques for multiple types of workpieces, and a single flipping mechanism can usually only complete the flipping task of a specific type of workpiece, a single flipping mechanism cannot meet the flipping requirements of different types of workpieces. The flipping mechanism requires power to drive, which reduces the efficiency of the production line.

[0006] Therefore, it is necessary to propose a non-powered small workpiece flipping and positioning device to solve the problems existing in the prior art. Summary of the invention

[0007] A series of simplified concepts are introduced in the Summary of the Invention, which will be further described in detail in the Detailed Description of the Invention. The Summary of the Invention does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the scope of protection of the claimed technical solution.

[0008] In order to solve the above problems, the present invention provides a non-powered small workpiece flipping and positioning device, including a base, a support plate is obliquely arranged on the base, positioning plates are symmetrically arranged on both sides of the support plate, V-shaped grooves and arc grooves are provided on the positioning plates, and support arms are arranged in front of the two positioning plates. The support arms, the positioning plates and the base form a U-shaped positioning structure for supporting the workpiece and enabling the jaws of a clamp that clamps the workpiece to move in and out.

[0009] Preferably, mounting grooves are provided on opposite sides of the front of the two positioning plates, the mounting grooves extend to the top surface of the support plate, the mounting grooves are arranged in front of the arc groove and spaced apart from the arc groove, the support arm is installed in the mounting groove, and the top surface of the support arm and the top surface of the positioning plate are in the same horizontal plane.

[0010] Preferably, the width of the mounting slot is the same as the width of the support arm.

[0011] Preferably, a plurality of arc-shaped grooves are provided along the length direction of the positioning plate, and the radius of the arc-shaped grooves gradually increases in a direction away from the support arm.

[0012] Preferably, the length direction of the arc-shaped groove is perpendicular to the length direction of the positioning plate and is arranged horizontally.

[0013] Preferably, an arc-shaped positioning groove is provided on the inclined surface of the support plate, and the length direction of the arc-shaped positioning groove is consistent with the length direction of the support plate.

[0014] Preferably, the V-shaped groove is arranged on the side of the arc groove away from the support arm, the angle between the two side walls of the V-shaped groove is 90 degrees, and the edge of the arc-shaped positioning groove and the side wall of the rear part of the V-shaped groove are in the same plane.

[0015] Preferably, the V-groove and the support plate form a V-shaped positioning structure for supporting a stepped shaft workpiece, the side surface of the front of the V-groove contacts the end surface of the stepped shaft workpiece, and the arc-shaped positioning groove contacts the outer circumferential surface of the maximum shaft diameter of the stepped shaft workpiece.

[0016] Preferably, it further comprises a fixing member, which is arranged on the rear side wall of the base and is used to fix the position of the base.

[0017] Preferably, the base, the positioning plate and the support arm are made of metal material or high molecular polymer material.

[0018] Compared with the prior art, the present invention has at least the following beneficial effects: The unpowered small workpiece flipping and positioning device described in the present invention has a support plate, a positioning plate and a support arm on the base, which can be used to place disc-type workpieces, shaft-type workpieces and stepped shaft-type workpieces respectively. The clamp then grabs the workpiece from another angle or position to achieve the flipping and positioning of the workpiece. It has a simple structure and does not require power. It can be used for the flipping and positioning of various types of workpieces, thereby improving the efficiency of the production line.

[0019] The other advantages, objectives and features of the unpowered small workpiece flipping and positioning device described in the present invention will be partially reflected through the following description, and will also be partially understood by technicians in this field through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a 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. In the accompanying drawings: Figure 1 It is a structural schematic diagram of the unpowered small workpiece flipping and positioning device disclosed in the present invention; Figure 2 It is a structural schematic diagram of the positioning plate disclosed in the present invention; Figure 3 It is a structural schematic diagram of the support plate disclosed in the present invention; Figure 4 It is a schematic diagram of placing the gear blank disclosed in the present invention into the U-shaped positioning structure; Figure 5 It is a schematic diagram of the flipping, positioning and grabbing of a gear blank disclosed in the present invention; Figure 6 It is a schematic diagram of placing the shaft disclosed in the present invention into the arc groove; Figure 7 It is a schematic diagram of placing the stepped shaft disclosed in the present invention on the V-shaped positioning structure; Figure 8 A schematic diagram of the placement of the stepped shaft disclosed in the present invention; Fig. 9 It is a schematic diagram of flipping, repositioning and grabbing of the stepped shaft disclosed in the present invention.

[0021] Among them: 1. base, 2. support plate, 3. positioning plate, 4. V-shaped groove, 5. arc groove, 6. support arm, 7. installation groove, 8. arc positioning groove, 9. edge, 10. fixing part, 101. gear blank, 102. shaft, 103 stepped shaft. DETAILED DESCRIPTION

[0022] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments so that those skilled in the art can implement the invention with reference to the description.

[0023] It should be understood that the terms such as “having”, “including” and “comprising” used herein do not exclude the existence or addition of one or more other elements or combinations thereof.

[0024] like Figure 1-Figure 9 As shown, the present invention provides a non-powered small workpiece flipping and positioning device, including a base 1, a support plate 2 is obliquely arranged on the base 1, positioning plates 3 are symmetrically arranged on both sides of the support plate 2, V-shaped grooves 4 and arc grooves 5 are provided on the positioning plates 3, and support arms 6 are arranged in front of the two positioning plates 3. The support arms 6, the positioning plates 3 and the base 1 form a U-shaped positioning structure for supporting the workpiece and enabling the jaws of a clamp that clamps the workpiece to move in and out.

[0025] Furthermore, mounting grooves 7 are provided on opposite sides of the front of the two positioning plates 3, and the mounting grooves 7 extend to the top surface of the support plate 2. The mounting grooves 7 are arranged in front of the arc groove 5 and are spaced apart from the arc groove 5. The support arm 6 is installed in the mounting groove 7, and the top surface of the support arm 6 is in the same horizontal plane as the top surface of the positioning plate 3.

[0026] Furthermore, the width of the mounting groove 7 is the same as the width of the support arm 6 .

[0027] Furthermore, a plurality of arc-shaped grooves 5 are provided along the length direction of the positioning plate 3 , and the radius of the arc-shaped grooves 5 gradually increases in a direction away from the support arm 6 .

[0028] Furthermore, the length direction of the arc groove 5 is perpendicular to the length direction of the positioning plate 3 and is arranged horizontally.

[0029] Furthermore, an arc-shaped positioning groove 8 is provided on the inclined surface of the support plate 2 , and the length direction of the arc-shaped positioning groove 8 is consistent with the length direction of the support plate 2 .

[0030] Furthermore, the V-shaped groove 4 is arranged on the side of the arc groove 5 away from the support arm 6, the angle between the two side walls of the V-shaped groove 4 is 90 degrees, and the edge 9 of the arc positioning groove 8 and the side wall of the rear of the V-shaped groove 4 are in the same plane.

[0031] Furthermore, the V-groove 4 and the support plate 2 form a V-shaped positioning structure for supporting a stepped shaft workpiece, the front side of the V-groove 4 contacts the end face of the stepped shaft workpiece, and the arc-shaped positioning groove 8 contacts the outer circumferential surface of the maximum shaft diameter of the stepped shaft workpiece.

[0032] Furthermore, a fixing member 10 is included. The fixing member 10 is arranged on the rear side wall of the base 1 and is used to fix the position of the base 1 .

[0033] Furthermore, the base 1 , the positioning plate 3 and the support arm 6 are made of metal materials or high molecular polymer materials.

[0034] The working principle of the above technical solution is: When the workpiece needs to be flipped during the processing, due to the special shape of some workpieces and the lack of support at the center of gravity, it cannot remain stable when placed on a plane and is prone to tilting or rolling (such as stepped shaft workpieces). Therefore, the flipping mechanism suitable for such workpieces usually requires a movable clamp to fix the workpiece to be flipped. In addition, there are some workpieces that require the robot clamp to be clamped directly in front of them (such as disc-type workpieces). The flipping of such workpieces usually needs to rely on the power mechanical structure of the flipping mechanism itself to complete.

[0035] A single flipping mechanism cannot meet the needs of multiple workpieces. Due to the particularity of the workpieces, a single flipping mechanism is often difficult to be compatible with multiple types of workpieces. Therefore, in order to meet the processing of multiple types of workpieces, many flexible production lines need to install multiple different flipping mechanisms to realize the flipping operation of different types of workpieces.

[0036] The function of the flipping mechanism is not expandable enough. In the future process transformation of the production line, if the size of a certain type of workpiece changes significantly, or a new type of workpiece needs to be flipped, the existing flipping mechanism may be difficult to adapt to the new workpiece through simple transformation. For example, if the diameter of the disc workpiece increases, and the pneumatic clamp used to fix the disc workpiece on the flipping mechanism cannot clamp the larger workpiece, it is usually necessary to replace the clamp of the entire flipping mechanism or even the entire mechanism to realize the workpiece flipping function, which leads to high transformation costs and long cycles.

[0037] The unpowered small workpiece flipping and positioning device described in the present invention has a simple and easy-to-understand structure and is applicable to a wide range of non-standard workpiece types. Individual positioning mechanism components can be customized or optionally installed according to the process requirements of the production line, and can complete the flipping process of various workpieces.

[0038] The U-shaped positioning structure is composed of two support arms 6 extending forward. The support arms 6 can be made of metal materials or non-metal materials with high strength and wear resistance, such as high molecular polymers. The support arms 6 can be set on the positioning plate 3 or directly fixed on the base 1. The U-shaped positioning structure is used to place disc-like workpieces, such as Figure 4 As shown, the gear blank 101 is taken as an example to illustrate the turning and positioning principle of the disc-type workpiece. When the workpiece needs to be turned over, the fixture grabs the gear blank 101 and places the gear blank 101 on the two support arms 6. When placing, the distance between the axis of the gear blank 101 and the two support arms 6 is the same. After the fixture releases the gear blank 101, the gear blank 101 is grabbed from the bottom, as shown in FIG. Figure 5As shown, the clamp grabs the gear blank 101 again from the bottom, and one claw of the clamp can extend to the side of the gear blank 101 through the space between the two support arms 6, and grabs the gear blank 101 again, realizing the flipping and positioning of the workpiece. The U-shaped positioning structure can flip and position disc-type workpieces such as gears, sprockets, and rings.

[0039] According to the same principle, the fixture can also first place the gear blank 101 on the two support arms 6 from the bottom. At this time, one claw of the fixture must pass through the space between the two support arms 6. After placement, the fixture is relaxed and then the gear blank 101 is grabbed from the top to complete the material removal process and realize the flipping and repositioning of the workpiece.

[0040] The support arm 6 can be set on the positioning plate 3, and a mounting groove 7 is opened on the opposite side faces of the front of the two positioning plates 3. The mounting groove 7 extends to the top surface of the support plate 2. The mounting groove 7 is set in the front of the arc groove 5 and is spaced apart from the arc groove 5. The support arm 6 is installed in the mounting groove 7. At least two mounting holes can be opened at the rear end of the support arm 6, and a threaded hole is opened on the lower side wall of the mounting groove 7 at a position opposite to the mounting hole. The support arm 6 is installed on the positioning plate 3 using a countersunk screw. The support arm can also be directly installed on the base 1 using a similar structure. The principle is the same as that of installing it on the positioning plate 3, and it will not be repeated here.

[0041] like Figure 6 As shown, the principle of flipping and positioning of shaft workpieces is explained by taking shaft 102 as an example. When flipping and positioning shaft 102, shaft 102 can be placed on the corresponding arc groove 5 according to the diameter of the shaft workpiece. When placing, the center of gravity of shaft 102 is placed between the two positioning plates, preferably in the middle of the two positioning plates 3 to maintain the stability of shaft 102 after placement. After the fixture releases shaft 102, shaft 102 can be grabbed from another position and angle to complete the material collection process and realize the flipping and positioning of the workpiece. Axis workpieces such as optical axes, blanks, and slender axes can be operated with reference to the flipping and positioning of shaft 102.

[0042] like Figure 7-Figure 9 As shown, when the stepped shaft 103 is turned over and positioned, the fixture adjusts the axial direction of the stepped shaft 103 to be parallel to the direction of the inclined surface of the support plate 2, and then places the stepped shaft 103 on the V-shaped positioning structure. The side surface of the front part of the V-shaped groove 4 contacts the end surface of the stepped shaft 103, and the arc-shaped positioning groove 8 contacts the outer circumferential surface of the maximum shaft diameter of the stepped shaft 103. Since the arc-shaped positioning groove 8 on the inclined surface of the support plate 2 supports the outer circumferential surface of the maximum shaft diameter of the stepped shaft 103, the stability of the stepped shaft 103 is guaranteed and rolling will not occur. Figure 8As shown, the upper part of the workpiece is grasped by the clamp at the end of the robot, and the semi-finished workpiece is placed flat at an angle of 45° on the arc-shaped positioning groove of the V-shaped positioning structure. After the clamp releases the stepped shaft 103, the material picking instruction continues to be executed, and the clamp moves to the lower part of the stepped shaft 103 to complete the material picking process and realize the flipping and repositioning of the workpiece.

[0043] When flipping and repositioning a stepped shaft workpiece, the stepped shaft should be placed with the end closest to the center of gravity facing downward and tilted on a V-shaped positioning structure, which can better maintain the stability of the stepped shaft workpiece.

[0044] The V-shaped groove 4 can be configured to have an angle of 90 degrees between two side walls, and the V-shaped groove 4 can be symmetrically configured, and the angles between the two side surfaces of the V-shaped groove 4 and the vertical surface are both 45 degrees.

[0045] The fixing part 10 is arranged on the rear side wall of the base 1. The fixing part 10 is used to fix the position of the base 1. The position of the base 1 refers to the position of the base 1 in the automatic production line. The running path of the clamp can be made more reasonable according to the specific structural setting of the automatic production line. The fixing part 10 is fixedly connected to the base 1 and can be connected by bolts to ensure the stability of the base 1.

[0046] The base 1, the positioning plate 3 and the support plate 2 can all be made of metal materials, or can be made of high molecular polymers with good strength and rigidity.

[0047] All workpiece positioning mechanisms and flipping devices of the small workpiece flipping and positioning device do not require additional power. The robot only needs to place the workpiece on the specified positioning structure with the robot's fixture, and then take it out from another position or angle. The operation is simple. Since the robot does not need to wait for the power device to complete the flipping of the workpiece before taking it out, it can also reduce the time spent on the flipping process and improve the efficiency of the production line.

[0048] The small workpiece flipping and positioning device integrates three independent positioning mechanisms: U-shaped positioning structure, arc groove, and V-shaped groove positioning structure. It can realize the positioning and flipping and positioning adaptation of a variety of workpieces (disc-type workpieces such as gears and sprockets, shaft-type workpieces such as optical axes, slender shafts, stepped shafts, etc.), thereby greatly reducing the occupied area of ​​the flipping and positioning mechanism in the production line.

[0049] The structural composition of the small workpiece flipping and positioning device is simple, and each positioning structure can be disassembled and replaced separately. If the existing flipping mechanism is not suitable for the size of a new workpiece, only 1-2 components in the flipping and positioning mechanism need to be replaced to complete the transformation; if the current production stage does not require a certain positioning structure to perform the corresponding workpiece flipping work, the unnecessary parts can be directly removed and only the required parts can be retained.

[0050] Beneficial effects of the above technical solution: The unpowered small workpiece flipping and positioning device described in the present invention has a support plate, a positioning plate and a support arm on the base, which can be used to place disc-type workpieces, shaft-type workpieces and stepped shaft-type workpieces respectively. The clamp then grabs the workpiece from another angle or position to achieve the flipping and positioning of the workpiece. It has a simple structure and does not require power. It can be used for the flipping and positioning of various types of workpieces, thereby improving the efficiency of the production line.

[0051] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0052] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A non-powered small workpiece turning and positioning device, characterized in that: The invention comprises a base (1), a support plate (2) being obliquely arranged on the base (1), positioning plates (3) being symmetrically arranged on both sides of the support plate (2), a V-shaped groove (4) and an arc-shaped groove (5) being provided on the positioning plates (3), support arms (6) being provided at the front of the two positioning plates (3), the support arms (6) and the positioning plates (3) and the base (1) forming a U-shaped positioning structure for supporting a workpiece and enabling a clamping claw of a clamp for clamping the workpiece to move in and out; the V-shaped groove (4) and the support plate (2) forming a V-shaped positioning structure, and an arc-shaped positioning groove (8) being provided on the inclined surface of the support plate (2).

2. The unpowered small workpiece flipping and positioning device according to claim 1 is characterized in that: Mounting grooves (7) are provided on the opposite sides of the front of the two positioning plates (3), the mounting grooves (7) extending to the top surface of the support plate (2), the mounting grooves (7) being arranged in front of the arc-shaped groove (5) and spaced apart from the arc-shaped groove (5), the support arm (6) being installed in the mounting groove (7), the top surface of the support arm (6) being in the same horizontal plane as the top surface of the positioning plate (3).

3. The unpowered small workpiece flipping and positioning device according to claim 2 is characterized in that: The width of the mounting groove (7) is the same as the width of the support arm (6).

4. The unpowered small workpiece flipping and positioning device according to claim 3 is characterized in that: A plurality of arc-shaped grooves (5) are arranged along the length direction of the positioning plate (3), and the radius of the arc-shaped grooves (5) gradually increases in a direction away from the support arm (6).

5. The unpowered small workpiece turning and positioning device according to claim 4 is characterized in that: The length direction of the arc-shaped groove (5) is perpendicular to the length direction of the positioning plate (3) and is arranged horizontally.

6. The unpowered small workpiece turning and positioning device according to claim 5 is characterized in that: The length direction of the arc-shaped positioning groove (8) is consistent with the length direction of the support plate (2).

7. The unpowered small workpiece flipping and positioning device according to claim 6 is characterized in that: The V-shaped groove (4) is arranged on a side of the arc groove (5) away from the support arm (6), the angle between the two side walls of the V-shaped groove (4) is 90 degrees, and the edge (9) of the arc-shaped positioning groove (8) and the side wall of the rear part of the V-shaped groove (4) are in the same plane.

8. The unpowered small workpiece flipping and positioning device according to claim 7 is characterized in that: The V-shaped positioning structure is used to support a stepped shaft workpiece, the side surface of the front portion of the V-shaped groove (4) contacts the end surface of the stepped shaft workpiece, and the arc-shaped positioning groove (8) contacts the outer circumferential surface of the maximum shaft diameter of the stepped shaft workpiece.

9. The unpowered small workpiece flipping and positioning device according to claim 1, characterized in that: It also comprises a fixing member (10), which is arranged on the rear side wall of the base (1), and is used to fix the position of the base (1).

10. The unpowered small workpiece flipping and positioning device according to claim 1, characterized in that: The base (1), the positioning plate (3) and the support arm (6) are made of metal material or high molecular polymer material.

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