Grabbing structure of spraying production line

Abstract

The utility model discloses a spraying production line grabbing structure which comprises a fixed disc and a plurality of grabbing handles which are distributed in a radiation mode and hinged to the outer side of the fixed disc, the upper ends of the grabbing handles are connected with driving mechanisms which drive the grabbing handles to swing, and clamping blocks are arranged on the inner sides of the lower ends of the grabbing handles. A first rectangular hole and a second rectangular hole which extend in the same direction as the clamping block are sequentially formed in the position, between the fixing disc and the clamping block, of the grabbing handle from top to bottom, a sliding block is slidably arranged in the first rectangular hole, the two ends of the sliding block are elastically connected with the two ends of the first rectangular hole, and a pressing rod is rotationally arranged in the second rectangular hole. The upper end of the pressing rod obliquely extends upwards in the direction of the fixing disc, the middle of the pressing rod is hinged to the sliding block through a supporting rod, and the outer end of the pressing rod is arranged to be an arc curved surface. The grabbing structure of the spraying production line can stably grab a workpiece with a long shaft structure and spray structural parts which are frequently in contact with a corrosive environment.

Description

Technical Field

[0001] The utility model relates to a gripper, in particular to a gripping structure for a spraying production line. Background Art

[0002] In modern industry, many formed workpieces need to be sprayed on their surfaces after processing. For example, some workpieces that are often used in corrosive environments need to be sprayed with anti-corrosion paint on their surfaces. When spraying the workpiece surface, the workpiece needs to be grabbed and transferred to the spraying line for spraying.

[0003] For example Figure 5 A long-axis structural workpiece is shown in the figure, one end of which is set as a long axis, and the other end is set as a structural part that needs to be frequently used in a corrosive environment. Therefore, it is necessary to spray anti-corrosion coating on the structural part that is frequently in contact with the corrosive environment.

[0004] Chinese patent CN202021504793.8 discloses a loading and unloading clamp structure for a robot, including a loading and unloading clamp structure main body, one side of the loading and unloading clamp structure main body is connected to a robotic arm control mechanism, a first clamp and a second clamp are provided on the loading and unloading clamp structure main body, and a workpiece is clamped between the first clamp and the second clamp, a first connecting spring is connected to the upper ends of the first clamp and the second clamp, and a clamping block is provided at the lower ends of the first clamp and the second clamp, and spring sheets are provided on both the first clamp and the second clamp, exhaust holes are opened on the spring sheets, and a second connecting spring is connected to one side of the spring sheets.

[0005] The loading and unloading jaw structure of the robot can only clamp the workpiece by two mutually cooperating clamping blocks, so as to load and unload the material. If the loading and unloading jaw structure of the robot is used for clamping and spraying the material, the following disadvantages will occur: 1. The coaxiality of the clamping cannot be ensured, and the clamping accuracy is poor; 2. Only two-point clamping can be achieved, and the clamping stability is poor. Utility Model Content

[0006] The utility model aims to provide a spraying production line grasping structure, which can stably grasp a workpiece with a long axis structure and spray its structural parts which are often in contact with a corrosive environment, and has high clamping accuracy and good stability.

[0007] In order to achieve the above-mentioned purpose, the utility model provides a gripping structure for a spraying production line, comprising a fixed disk and a plurality of gripping handles hinged to the outside of the fixed disk in a radial distribution, the upper end of the gripping handle is connected to a driving mechanism for driving the gripping handle to swing, and a clamping block is arranged on the inner side of the lower end, and a first rectangular hole and a second rectangular hole extending in the same direction as the clamping block are arranged in sequence from top to bottom on the gripping handle between the fixed disk and the clamping block, a slider is slidably arranged in the first rectangular hole, and the two ends of the slider are elastically connected to the two ends of the first rectangular hole, and a pressure rod is rotatably arranged in the second rectangular hole, and the upper end of the pressure rod extends obliquely upward toward the direction of the fixed disk, the middle part of the pressure rod is hingedly connected to the slider through a strut, and the outer end of the pressure rod is arranged as a circular arc surface.

[0008] Preferably, at least one polished rod is provided in the first rectangular hole, and the slider is slidably mounted on the polished rod along the length direction of the first rectangular hole. A spring is respectively mounted on the polished rod at both ends of the slider, and the two ends of the spring are respectively pressed against the slider and the inner wall of the first rectangular hole.

[0009] Preferably, a plurality of first U-shaped grooves are provided on the periphery of the fixing disk; a first rotating shaft parallel to the tangent direction of the fixing disk is provided in the first U-shaped groove, and a first axial hole cooperating with the first rotating shaft is provided on the gripping handle.

[0010] Preferably, a movable plate is arranged above the fixed plate, and a mounting plate is arranged above the movable plate; the mounting plate is connected to the fixed plate by a plurality of columns sliding through the movable plate, and a cylinder connected to the movable plate is installed on the mounting plate; a plurality of second U-shaped grooves are arranged on the periphery of the movable plate, waist grooves are arranged on both sides of the second U-shaped grooves, and convex columns slidingly matched with the waist grooves are arranged on both sides of the handle.

[0011] Preferably, a plurality of mounting holes are provided on the mounting plate.

[0012] Preferably, a second rotating shaft is arranged in the second rectangular hole, and a second shaft hole matching with the second rotating shaft is arranged at the lower end of the pressure rod.

[0013] Preferably, a third rectangular hole is provided in the middle of the pressure rod, a third rotating shaft is provided in the third rectangular hole, and a third axial hole cooperating with the third rotating shaft is provided on the support rod.

[0014] Preferably, an articulated seat is provided inside the sliding block, and the articulated seat is connected to the support rod via a pin.

[0015] Preferably, the grab handle comprises an upper handle, a middle handle and a lower handle from top to bottom, the upper end of the upper handle extends inwardly, the lower end of the lower handle extends inwardly, the middle handle is hinged to the fixed plate, and the clamping block is perpendicular to the middle handle.

[0016] According to the above technical scheme, the utility model provides a gripping structure for a spraying production line, including a fixed disk and a plurality of gripping handles radially distributed and hinged to the outside of the fixed disk, the upper end of the gripping handle is connected to a driving mechanism for driving the gripping handle to swing, and a clamping block is arranged on the inner side of the lower end, and a first rectangular hole and a second rectangular hole extending in the same direction as the clamping block are arranged in sequence from top to bottom on the gripping handle between the fixed disk and the clamping block, a slider is slidably arranged in the first rectangular hole, and the two ends of the slider are elastically connected to the two ends of the first rectangular hole, and a pressure rod is rotatably arranged in the second rectangular hole, and the upper end of the pressure rod extends obliquely upward toward the direction of the fixed disk, the middle part of the pressure rod is hingedly connected to the slider through a support rod, and the outer end of the pressure rod is arranged as a circular arc surface.

[0017] The method of using the gripping structure of the spraying production line is as follows: first, the upper ends of the multiple gripping handles are driven to swing inward by the driving mechanism, so that the lower ends of the gripping handles are opened, and then moved to the gripping position, so that the long-axis structure workpiece to be grasped is maintained in a coaxial position with the fixed disk, and then, the upper ends of the multiple gripping handles are driven to swing outward by the driving mechanism, so that the lower ends of the gripping handles are contracted, so that multiple circumferential clamping blocks are clamped on the side of the long-axis structure workpiece, and at the same time, the outer end of the pressure rod is elastically pressed at another position on the side of the long-axis workpiece, thereby performing double-position and multi-point clamping on the shaft part of the long-axis structure workpiece.

[0018] The gripping structure of the spraying production line has the following beneficial effects: 1. Through the clamping of multiple clamping blocks and the auxiliary clamping of multiple pressure rods, the long-axis structure workpiece can be stably clamped at two positions and multiple points, thereby improving the clamping stability; 2. Since the two ends of the slider are elastically connected to the two ends of the first rectangular hole, the upper end of the pressure rod can be elastically pressed and restored, so that the pressure rod can also adaptively clamp the long-axis structure workpiece with variable diameter; 3. The outer end of the pressure rod is set to a circular arc surface, so that the outer end of the pressure rod can slide and contact the surface of the long-axis structure workpiece when pressed, thereby avoiding scratching the long-axis structure workpiece.

[0019] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. 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 following specific embodiments, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the accompanying drawings:

[0021] Figure 1 It is a schematic diagram of the overall structure of a preferred implementation of the grabbing structure of a spraying production line;

[0022] Figure 2 It is a schematic diagram of the overall structure of a preferred embodiment of the grip;

[0023] Figure 3 is a schematic cross-sectional structure diagram of a preferred embodiment of the grip;

[0024] Figure 4 It is a partial structural schematic diagram of a preferred implementation of the grabbing structure of the spraying production line;

[0025] Figure 5 It is a schematic diagram of the clamping state of a preferred embodiment of the gripping structure of the spraying production line.

[0026] Description of Reference Numerals

[0027] 1-grip handle; 2-fixed plate; 3-movable plate; 4-mounting plate; 5-cylinder; 6-mounting hole; 7-column; 8-convex column; 9-waist groove; 10-second U-shaped groove; 11-first U-shaped groove; 12-upper handle; 13-middle handle; 14-lower handle; 15-clamp block; 16-pressure rod; 17-support rod; 18-slider; 19-hinge seat; 20-pin shaft; 21-first shaft hole; 22-light rod; 23-spring; 24-second rectangular hole; 25-third rectangular hole; 26-first rectangular hole; 27-first rotating shaft; 28-second rotating shaft; 29-third rotating shaft; 30-arc surface; 31-long axis structure workpiece. DETAILED DESCRIPTION

[0028] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0029] In the present utility model, unless otherwise stated, directional words contained in terms such as "up, down, left, right, front, back, inside, outside" merely represent the orientation of the terms in normal usage, or are common names understood by those skilled in the art, and should not be regarded as limitations on the terms.

[0030] See also Figure 1-4The spraying production line gripping structure shown comprises a fixed disk 2 and a plurality of gripping handles 1 which are radially distributed and hinged to the outside of the fixed disk 2. The upper end of the gripping handle 1 is connected to a driving mechanism for driving the gripping handle 1 to swing, and a clamping block 15 is arranged on the inner side of the lower end. A first rectangular hole 26 and a second rectangular hole 24 which extend in the same direction as the clamping block 15 are arranged on the gripping handle 1 in sequence from top to bottom between the fixed disk 2 and the clamping block 15. A slider 18 is slidably arranged in the first rectangular hole 26, and the two ends of the slider 18 are elastically connected to the two ends of the first rectangular hole 26. A pressure rod 16 is rotatably arranged in the second rectangular hole 24, and the upper end of the pressure rod 16 extends obliquely upward toward the direction of the fixed disk 2. The middle part of the pressure rod 16 is hingedly connected to the slider 18 through a strut 17, and the outer end of the pressure rod 16 is arranged as a circular arc surface 30.

[0031] Through the implementation of the above technical solution, when in use, first, the upper ends of the multiple gripping handles 1 are driven by the driving mechanism to swing inward, so that the lower ends of the gripping handles 1 are opened, and then moved to the gripping position, so that the long-axis structure workpiece 31 to be grasped is maintained in a coaxial position with the fixed disk 2, and then, the upper ends of the multiple gripping handles 1 are driven by the driving mechanism to swing outward, so that the lower ends of the gripping handles 1 are contracted, so that the multiple circumferential clamping blocks 15 are clamped on the side of the long-axis structure workpiece 31, and at the same time, the outer end of the pressure rod 16 is elastically pressed at another position on the side of the long-axis workpiece, thereby performing double-position and multi-point clamping on the shaft part of the long-axis structure workpiece 31. By clamping with multiple clamping blocks 15 and auxiliary clamping with multiple pressure rods 16, the long-axis structure workpiece 31 can be stably clamped at two positions and multiple points, thereby improving the clamping stability; since the two ends of the slider 18 are elastically connected to the two ends of the first rectangular hole 26, the upper end of the pressure rod 16 can be elastically pressed and restored, so that the pressure rod 16 can also adaptively clamp the long-axis structure workpiece 31 with variable diameter; the outer end of the pressure rod 16 is set to a circular arc surface 30, so that the outer end of the pressure rod 16 can slide and contact the surface of the long-axis structure workpiece 31 when pressed, thereby avoiding scratching the long-axis structure workpiece 31.

[0032] In this embodiment, at least one polished rod 22 is disposed in the first rectangular hole 26, and the slider 18 is slidably sleeved on the polished rod 22 along the length direction of the first rectangular hole 26. A spring 23 is sleeved on the polished rod 22 at both ends of the slider 18, and the two ends of the spring 23 are respectively pressed against the slider 18 and the inner wall of the first rectangular hole 26. Through such a configuration, the slider 18 can fit and slide in the first rectangular hole 26 and play a stable guiding role under the action of the polished rod 22, and the slider 18 can be elastically squeezed by the springs 23 disposed at both ends, and the slider 18 can be quickly reset.

[0033] In this embodiment, in order to further provide a hinged connection mode between the gripping handle 1 and the fixing plate 2, a plurality of first U-shaped grooves 11 are provided on the periphery of the fixing plate 2; a first rotating shaft 27 parallel to the tangent direction of the fixing plate 2 is provided in the first U-shaped groove 11, and a first shaft hole 21 matching with the first rotating shaft 27 is provided on the gripping handle 1. The first shaft hole 21 is rotatably sleeved on the first rotating shaft 27 to realize the rotation hinge with the first rotating shaft 27 as the axis, thereby realizing the opening and closing of the gripping handle 1.

[0034] In this embodiment, in order to further provide a driving mechanism, a movable disk 3 is arranged above the fixed disk 2, and a mounting disk 4 is arranged above the movable disk 3; the mounting disk 4 is connected to the fixed disk 2 through a plurality of columns 7 that slide through the movable disk 3, and a cylinder 5 connected to the movable disk 3 is installed on the mounting disk 4; a plurality of second U-shaped grooves 10 are arranged on the periphery of the movable disk 3, waist grooves 9 are arranged on both sides of the second U-shaped grooves 10, and convex columns 8 that slide and cooperate with the waist grooves 9 are arranged on both sides of the gripping handle 1. The working mode of the driving mechanism is: through the extension and contraction of the cylinder 5, the movable disk 3 is pushed to move vertically under the sliding guide of the column 7, and the upper end of the gripping handle 1 is pulled to swing inward or outward under the sliding cooperation of the waist groove 9 and the convex column 8, which can then drive the lower end of the gripping handle 1 to open and close, so as to achieve the function of grabbing or releasing the workpiece.

[0035] In this embodiment, the mounting plate 4 is provided with a plurality of mounting holes 6. The provision of the plurality of mounting holes 6 facilitates the installation of the entire spraying production line grasping structure to the corresponding tooling by bolts, for example, the entire spraying production line grasping structure is installed to the end of a robotic arm, so as to control the grasping posture of the spraying production line grasping structure through the robotic arm.

[0036] In this embodiment, in order to further provide a rotational connection mode of the pressure rod 16, a second rotating shaft 28 is provided in the second rectangular hole 24, and a second shaft hole matching with the second rotating shaft 28 is provided at the lower end of the pressure rod 16. The rotational matching connection between the pressure rod 16 and the gripping handle 1 is realized by rotating the second shaft hole on the second rotating shaft 28, so that the pressure rod 16 can rotate around the second rotating shaft 28.

[0037] In this embodiment, in order to further provide a hinged connection mode between the support rod 17 and the pressure rod 16, a third rectangular hole 25 is provided in the middle of the pressure rod 16, a third rotating shaft 29 is provided in the third rectangular hole 25, and a third shaft hole matched with the third rotating shaft 29 is provided on the support rod 17. The rotational matching connection between the support rod 17 and the pressure rod 16 is realized by rotating the third shaft hole on the third rotating shaft 29, so that the support rod 17 can rotate around the third rotating shaft 29.

[0038] In this embodiment, in order to further provide a hinged connection between the support rod 17 and the slider 18, a hinge seat 19 is provided inside the slider 18, and the hinge seat 19 is connected to the support rod 17 through a pin 20. Through such a configuration, when the pressure rod 16 is pressed, the slider 18 can be pushed to slide in the first rectangular hole 26.

[0039] In this embodiment, in order to further provide a gripping handle 1, the gripping handle 1 includes an upper handle 12, a middle handle 13 and a lower handle 14 from top to bottom, the upper end of the upper handle 12 extends inwardly, the lower end of the lower handle 14 extends inwardly, the middle handle 13 is hinged to the fixing plate 2, and the clamping block 15 is perpendicular to the middle handle 13. Through such a configuration, when the gripping handle 1 is in a gripping state, the middle handle 13 is in a vertical state, the clamping block 15 is in a horizontal clamping state, the upper end of the upper handle 12 extends inwardly, which is convenient for the gripping handle 1 to swing inwardly or outwardly through the limiting pulling of the waist groove 9, and the lower end of the lower handle 14 extends inwardly, so that the clamping effect can be improved.

[0040] In one embodiment of the utility model, four gripping handles 1 are arranged at equal intervals along the circumference of the fixed disk 2. Through an embracing gripping method, it can ensure that the grasped shaft is consistent with the axis of the fixed disk 2, thereby increasing the gripping accuracy.

[0041] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, and these simple modifications all belong to the protection scope of the present invention.

[0042] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present utility model will not further describe various possible combinations.

[0043] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A spraying production line grabbing structure, characterized in that: The spraying production line gripping structure comprises a fixed disk (2) and a plurality of gripping handles (1) which are radially distributed and hinged to the outside of the fixed disk (2); the upper end of the gripping handle (1) is connected to a driving mechanism for driving the gripping handle to swing; a clamping block (15) is arranged on the inner side of the lower end; the gripping handle (1) is located between the fixed disk (2) and the clamping block (15) and is arranged in sequence from top to bottom with a first rectangular hole (26) and a second rectangular hole (24) extending in the same direction as the clamping block (15); A slider (18) is slidably arranged in a rectangular hole (26), and two ends of the slider (18) are elastically connected to two ends of the first rectangular hole (26). A pressure rod (16) is rotatably arranged in the second rectangular hole (24), and the upper end of the pressure rod (16) extends obliquely upward toward the direction of the fixed plate (2). The middle part of the pressure rod (16) is hingedly connected to the slider (18) through a support rod (17), and the outer end of the pressure rod (16) is arranged as a circular arc surface (30).

2. The spraying production line grabbing structure according to claim 1, characterized in that: At least one light rod (22) is arranged in the first rectangular hole (26); the slider (18) is slidably mounted on the light rod (22) along the length direction of the first rectangular hole (26); a spring (23) is respectively mounted on the two ends of the slider (18) on the light rod (22); and the two ends of the spring (23) are respectively pressed against the slider (18) and the inner wall of the first rectangular hole (26).

3. The spraying production line grabbing structure according to claim 1, characterized in that: The fixed disk (2) is provided with a plurality of first U-shaped grooves (11) on its periphery; a first rotating shaft (27) parallel to the tangent direction of the fixed disk (2) is provided in the first U-shaped groove (11); and a first axial hole (21) cooperating with the first rotating shaft (27) is provided on the gripping handle (1).

4. The spraying production line grabbing structure according to claim 1, characterized in that: A movable disk (3) is arranged above the fixed disk (2), and a mounting disk (4) is arranged above the movable disk (3); The mounting plate (4) is connected to the fixed plate (2) via a plurality of upright posts (7) that slide through the movable plate (3), and a cylinder (5) connected to the movable plate (3) is mounted on the mounting plate (4); The movable plate (3) is provided with a plurality of second U-shaped grooves (10) on its periphery, waist grooves (9) are provided on both sides of the second U-shaped grooves (10), and convex columns (8) slidably matched with the waist grooves (9) are provided on both sides of the gripping handle (1).

5. The spraying production line grabbing structure according to claim 4, characterized in that: The installation plate (4) is provided with a plurality of installation holes (6).

6. The spraying production line grabbing structure according to claim 1, characterized in that: A second rotating shaft (28) is arranged in the second rectangular hole (24), and a second shaft hole matching with the second rotating shaft (28) is arranged at the lower end of the pressure rod (16).

7. The spraying production line grabbing structure according to claim 1, characterized in that: A third rectangular hole (25) is provided in the middle of the pressure rod (16); A third rotating shaft (29) is arranged in the third rectangular hole (25), and a third axial hole matching with the third rotating shaft (29) is arranged on the support rod (17).

8. The spraying production line grabbing structure according to claim 1, characterized in that: An articulated seat (19) is arranged inside the sliding block (18), and the articulated seat (19) is connected to the support rod (17) via a pin shaft (20).

9. The spraying production line grabbing structure according to claim 1, characterized in that: The gripping handle (1) comprises, from top to bottom, an upper handle (12), a middle handle (13) and a lower handle (14); The upper end of the upper handle (12) extends inwardly, the lower end of the lower handle (14) extends inwardly, and the middle handle (13) is hinged to the fixed plate (2); The clamping block (15) is perpendicular to the middle handle (13).

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