Magnesium alloy sample gripping device

Abstract

The utility model discloses a magnesium alloy sample grabbing device, this magnesium alloy sample grabbing device includes the chassis, and the chassis is hinged and is provided with a plurality of swing arms along the circumference, and the upper end of chassis is connected with the mounting plate through a plurality of arc supports, and the inboard of a plurality of arc supports is slidably provided with a sliding disc, and the middle part of sliding disc is provided with a screw hole, a speed reducer motor is installed on the mounting plate, and the shaft end of speed reducer motor is connected with the screw rod that is screwed with the screw hole, the side of sliding disc is provided with the radial slot that corresponds with swing arm one to one, and the both sides of radial slot are provided with the waist groove, the both sides of the upper end of swing arm are provided with the convex column that can be located in the waist groove and slide, the lower end of swing arm is provided with the lower extension arm that is bent to the inboard, the terminal of lower extension arm is rotatably provided with the pressing plate, and the upper end back of pressing plate is connected with lower extension arm through the spring. The magnesium alloy sample grabbing device can tightly clamp a plurality of pressing plates on the side of magnesium alloy sample through the swing of a plurality of swing arms, and the magnesium alloy sample is grabbed.

Description

Technical Field

[0001] This utility model relates to magnesium alloys, and more specifically, to a magnesium alloy sample gripping device. Background Technology

[0002] Magnesium alloys are commonly used in modern industry, and are frequently used in the automotive industry, aerospace, electronics products and medical devices. Before processing magnesium alloy products, it is necessary to take magnesium alloy samples. Commonly used magnesium alloy samples include cylindrical and polygonal prism shapes.

[0003] Patent CN214772141U discloses a gripper device, including a first driving part, a second driving part, a first clamping part, and a second clamping part; the first driving part is used to drive the first clamping part and / or the second clamping part to move back and forth in the clamping direction; the second driving part is connected to the first driving part and is used to drive the first driving part to rotate; the first clamping jaw and the second clamping jaw are respectively provided with a first groove and a second groove for accommodating and clamping the workpiece; the first groove and the second groove are arranged opposite to each other.

[0004] The current gripper device can only grip the sample from both sides, resulting in low stability when holding the sample. Therefore, a gripping device that can hold the sample from more sides is needed. Utility Model Content

[0005] The purpose of this invention is to provide a magnesium alloy sample gripping device. This device can grip the magnesium alloy sample by using multiple swing arms to clamp multiple pressure plates tightly against the side of the sample. The multiple clamping points increase the gripping stability.

[0006] To achieve the above objectives, this utility model provides a magnesium alloy sample gripping device, which includes a chassis. Multiple swing arms are circumferentially hinged to the chassis. A mounting plate is connected to the upper end of the chassis via multiple arc supports. A sliding disc is slidably mounted inside the multiple arc supports, and a screw hole is provided in the center of the sliding disc. A reduction motor is mounted on the mounting plate, and a lead screw threaded into the screw hole is axially connected to the shaft end of the reduction motor. Radial slots corresponding to the swing arms are provided on the sides of the sliding discs, and waist grooves are provided on both sides of the radial slots. Protrusions capable of sliding within the waist grooves are provided on both sides of the upper end of each swing arm. A lower extension arm bent inwards is provided at the lower end of each swing arm, and a pressure plate is rotatably mounted at the end of the lower extension arm. The upper back of the pressure plate is connected to the lower extension arm via a spring.

[0007] Preferably, the bottom of the swing arm is provided with a U-shaped opening, and the two sides of the U-shaped opening are provided with shaft holes. A protrusion is provided at the center of the back of the pressure plate, and the two sides of the protrusion are provided with convex shafts that rotate in the shaft holes.

[0008] Preferably, a first connecting plate is provided on the upper back of the pressure plate, and a second connecting plate is provided on the upper front of the lower extension arm. Both the first connecting plate and the second connecting plate are provided with through holes, and the two ends of the spring are provided with hooks that can be hooked into the through holes.

[0009] Preferably, the inner side of the pressure plate is provided with a rubber pad, the back of the rubber pad is provided with a plurality of laterally extending T-shaped strips, and the inner side of the pressure plate is provided with a plurality of T-shaped grooves that are fitted into the T-shaped strips.

[0010] Preferably, the chassis has a plurality of recesses along its circumference; a pin is provided in each recess, and a rotating arm is provided in the middle of the swing arm and is rotatably connected to the pin, with the upper end of the rotating arm extending toward the center of the chassis.

[0011] Preferably, the upper end of the rotating arm is connected to an upper extension arm parallel to the main body of the swing arm, and the upper end of the upper extension arm is provided with a transverse arm parallel to the rotating arm, and the protrusion is provided on both sides of the transverse arm.

[0012] Preferably, a bearing is installed in the middle of the chassis, and the lower end of the lead screw is inserted into the bearing.

[0013] Preferably, the inner side of the arc support is provided with a vertical guide groove, and the outer side of the sliding disk is provided with a sliding block that slides in the vertical guide groove.

[0014] Preferably, a fixing plate is connected to the mounting plate by a plurality of connecting rods, and a shaft arm is connected to the upper end of the fixing plate.

[0015] According to the above technical solution, this utility model provides a magnesium alloy sample gripping device, which includes a chassis. Multiple swing arms are circumferentially hinged to the chassis. A mounting plate is connected to the upper end of the chassis via multiple arc supports. A sliding disc is slidably mounted inside the multiple arc supports, and a screw hole is provided in the center of the sliding disc. A reduction motor is mounted on the mounting plate, and a lead screw threaded into the screw hole is axially connected to the shaft end of the reduction motor. Radial slots corresponding to the swing arms are provided on the sides of the sliding discs, and waist grooves are provided on both sides of the radial slots. Protrusions capable of sliding within the waist grooves are provided on both sides of the upper end of each swing arm. A lower extension arm bent inwards is provided at the lower end of each swing arm, and a pressure plate is rotatably mounted at the end of the lower extension arm. The upper back of the pressure plate is connected to the lower extension arm via a spring.

[0016] The usage and beneficial effects of this magnesium alloy sample gripping device are as follows: When using this device, it is installed on the corresponding drive fixture. The drive fixture moves the entire device to the gripping position. A reduction motor rotates, driving a lead screw, which, in turn, moves a sliding disc vertically through the threaded engagement of the lead screw and the screw hole. Simultaneously, the vertical movement of the sliding disc pulls the upper end of the swing arm, causing the swing arm to swing and grip the magnesium alloy sample. After gripping, the drive fixture moves the entire device to the placement position to place the magnesium alloy sample. The reduction motor then reverses, releasing the sample. During the gripping process, the pressure plate swings along with the swing arm until it clamps against the side of the sample. The pressure plate increases the clamping contact area and friction. When the pressure plate is not gripping a sample, a spring is used to limit its movement to prevent it from jumping.

[0017] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of a magnesium alloy sample grasping device;

[0020] Figure 2 yes Figure 1 A magnified schematic diagram of a portion of region A in the middle;

[0021] Figure 3 This is a front view schematic diagram of a preferred embodiment of a magnesium alloy sample gripping device;

[0022] Figure 4 yes Figure 3 A schematic diagram of the BB cross-sectional structure;

[0023] Figure 5 yes Figure 3 Schematic diagram of CC cross-section structure;

[0024] Figure 6 yes Figure 4 A magnified schematic diagram of the structure of region D in the middle.

[0025] Explanation of reference numerals in the attached figures

[0026] 1-Chassis; 2-Arc support; 3-Mounting plate; 4-Connecting rod; 5-Gear motor; 6-Fixed disc; 7-Shaft arm; 8-Sliding disc; 9-Notch; 10-Bearing; 11-Swing arm; 12-Protruding shaft; 13-Pressure plate; 14-Rubber pad; 15-Vertical guide groove; 16-Second connecting plate; 17-Lower extension arm; 18-Spring; 19-T-strip; 20-Protrusion; 21-Screw rod; 22-Sliding block; 23-First connecting plate; 24-Protruding column; 25-Waist groove; 26-Rotating arm; 27-Pin shaft; 28-Upper extension arm; 29-Transverse arm; 30-Radial groove. Detailed Implementation

[0027] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0028] In this utility model, unless otherwise stated, directional terms such as "up, down, left, right, front, back, inside, outside" in the terminology only represent the orientation of the term in its conventional use or are common terms understood by those skilled in the art, and should not be regarded as a limitation on the term.

[0029] See Figure 1-6 The magnesium alloy sample gripping device shown includes a base 1, on which multiple swing arms 11 are hinged circumferentially. A mounting plate 3 is connected to the upper end of the base 1 via multiple arc supports 2. A sliding disc 8 is slidably mounted inside the multiple arc supports 2, and a screw hole is provided in the center of the sliding disc 8. A reduction motor 5 is mounted on the mounting plate 3, and a lead screw 21 with a threaded engagement with the screw hole is axially connected to the shaft end of the reduction motor 5. Radial slots corresponding to the swing arms 11 are provided on the sides of the sliding disc 8, and waist grooves 25 are provided on both sides of the radial slots. Protrusions 24 that can slide within the waist grooves 25 are provided on both sides of the upper end of each swing arm 11. A lower extension arm 17 bent inwards is provided at the lower end of each swing arm 11, and a pressure plate 13 is rotatably mounted at the end of the lower extension arm 17. The upper back of the pressure plate 13 is connected to the lower extension arm 17 via a spring 18.

[0030] By implementing the above technical solution, when using the magnesium alloy sample gripping device, the device is installed on the corresponding drive fixture. The drive fixture moves the entire device to the gripping position. The rotation of the reduction motor 5 drives the lead screw 21 to rotate, and the threaded engagement between the lead screw 21 and the screw hole drives the sliding disc 8 to move vertically. Simultaneously, the vertical movement of the sliding disc 8 pulls the upper end of the swing arm 11 to move, thus swinging the swing arm 11 to grip the magnesium alloy sample. After gripping, the device is moved to the placement position by the drive fixture to place the magnesium alloy sample. The reduction motor 5 then reverses to release the magnesium alloy sample. During the gripping of the magnesium alloy sample by the swing arm 11, the pressure plate 13 swings along with the clamping process until it clamps against the side of the magnesium alloy sample. The pressure plate 13 increases the clamping contact area and increases friction. When the pressure plate 13 is not gripping a magnesium alloy sample, a spring 18 is used to limit the pressure plate 13 to prevent it from jumping. The driving fixture, such as a three-axis drive platform or a multi-axis robotic arm, is connected to the mounting plate 3 and can move the magnesium alloy sample gripping device as a whole.

[0031] In this embodiment, the bottom of the swing arm 11 is provided with a U-shaped opening, and shaft holes are provided on both sides of the U-shaped opening. A protrusion 20 is provided at the center of the back of the pressure plate 13, and convex shafts 12 rotating around the shaft holes are provided on both sides of the protrusion 20. With this arrangement, the pressure plate 13 can rotate about the axis of the convex shafts 12. The bottom of the swing arm 11 is an arc coaxial with the convex shafts 12, and the pressure plate 13 contacts the arc surface, increasing the structural strength.

[0032] In this embodiment, a first connecting plate 23 is provided on the upper back of the pressure plate 13, and a second connecting plate 16 is provided on the front upper end of the lower extension arm 17. Both the first connecting plate 23 and the second connecting plate 16 are provided with through holes, and the two ends of the spring 18 are provided with hooks that can hook into the through holes. This arrangement provides a way to install the spring 18, with hooks at both ends of the spring 18 hooking into the corresponding through holes.

[0033] In this embodiment, a rubber pad 14 is provided on the inner side of the pressure plate 13, and a plurality of laterally extending T-shaped strips 19 are provided on the back of the rubber pad 14. A plurality of T-shaped grooves are provided on the inner side of the pressure plate 13 to fit into the T-shaped strips 19. With this arrangement, the rubber pad 14 can increase the friction with the magnesium alloy sample on the one hand, and avoid damaging the magnesium alloy sample on the other hand.

[0034] In this embodiment, the chassis 1 has multiple recesses 9 arranged circumferentially; a pin 27 is disposed within each recess 9, and a rotating arm 26 rotatably connected to the pin 27 is disposed in the middle of the swing arm 11, with the upper end of the rotating arm 26 extending toward the center of the chassis 1. With this arrangement, the middle of the swing arm 11 swings around the pin 27, and the rotating arm 26 moves the lower end of the swing arm 11 outward, increasing the clamping radius.

[0035] In this embodiment, to further improve the clamping effect of the swing arm 11 structure, an upper extension arm 28 parallel to the main body of the swing arm 11 is connected to the upper end of the rotating arm 26. A transverse arm 29 parallel to the rotating arm 26 is provided at the upper end of the upper extension arm 28, and protrusions 24 are disposed on both sides of the transverse arm 29. When the sliding disc 8 moves vertically, the protrusions 24 on both sides can slide within the waist groove 25.

[0036] In this embodiment, a bearing 10 is installed in the middle of the chassis 1, and the lower end of the lead screw 21 is inserted into the bearing 10. This arrangement increases the rotational stability of the lead screw 21.

[0037] In this embodiment, a vertical guide groove 15 is provided on the inner side of the arc support 2, and a sliding block 22 that slides within the vertical guide groove 15 is provided on the outer side of the sliding disk 8. This arrangement allows the sliding block 22 to slide vertically within the vertical guide groove 15, preventing the sliding disk 8 from rotating.

[0038] In this embodiment, a fixing plate 6 is connected to the mounting plate 3 via multiple connecting rods 4, and a shaft arm 7 is connected to the upper end of the fixing plate 6. This arrangement allows the shaft arm 7 to connect with the drive fixture.

[0039] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0040] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.

[0041] Furthermore, various different embodiments of this utility model can be combined in any way, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.

Claims

1. A magnesium alloy sample gripping device, characterized in that, The magnesium alloy sample gripping device includes a chassis (1), which is hinged with multiple swing arms (11) in the circumferential direction. The upper end of the chassis (1) is connected to a mounting plate (3) through multiple arc supports (2). A sliding disc (8) is slidably arranged inside the multiple arc supports (2), and a screw hole is provided in the middle of the sliding disc (8). A geared motor (5) is installed on the mounting plate (3). The shaft end of the geared motor (5) is connected to a lead screw (21) that is threaded with the screw hole. The side of the sliding disc (8) is provided with radial slots that correspond one-to-one with the swing arm (11). Waist grooves (25) are provided on both sides of the radial slots. The upper end of the swing arm (11) is provided with protruding posts (24) on both sides that can slide within the waist groove (25). The lower end of the swing arm (11) is provided with a lower extension arm (17) that bends inward. The end of the lower extension arm (17) is rotatably provided with a pressure plate (13). The back of the upper end of the pressure plate (13) is connected to the lower extension arm (17) by a spring (18).

2. The magnesium alloy sample gripping device according to claim 1, characterized in that, The bottom of the swing arm (11) is provided with a U-shaped opening, and shaft holes are provided on both sides of the U-shaped opening. A protrusion (20) is provided at the center of the back of the pressure plate (13), and a convex shaft (12) rotating in the shaft hole is provided on both sides of the protrusion (20).

3. The magnesium alloy sample gripping device according to claim 1, characterized in that, The pressure plate (13) has a first connecting plate (23) on its upper back side, and the lower extension arm (17) has a second connecting plate (16) on its upper front side. Both the first connecting plate (23) and the second connecting plate (16) have through holes, and the spring (18) has hooks at both ends that can hook into the through holes.

4. The magnesium alloy sample gripping device according to claim 1, characterized in that, The inner side of the pressure plate (13) is provided with a rubber pad (14), and the back of the rubber pad (14) is provided with a plurality of horizontally extending T-shaped strips (19). The inner side of the pressure plate (13) is provided with a plurality of T-shaped grooves that are fitted into the T-shaped strips (19).

5. The magnesium alloy sample gripping device according to claim 1, characterized in that, The chassis (1) has multiple recesses (9) arranged circumferentially; A pin (27) is provided in the recess (9), and a rotating arm (26) is provided in the middle of the swing arm (11) and is rotatably connected to the pin (27). The upper end of the rotating arm (26) extends toward the center of the chassis (1).

6. The magnesium alloy sample gripping device according to claim 5, characterized in that, The upper end of the rotating arm (26) is connected to an upper extension arm (28) parallel to the main body of the swing arm (11). The upper end of the upper extension arm (28) is provided with a transverse arm (29) parallel to the rotating arm (26). The protruding post (24) is provided on both sides of the transverse arm (29).

7. The magnesium alloy sample gripping device according to claim 1, characterized in that, A bearing (10) is installed in the middle of the chassis (1), and the lower end of the lead screw (21) is inserted into the bearing (10).

8. The magnesium alloy sample gripping device according to claim 1, characterized in that, The inner side of the arc support (2) is provided with a vertical guide groove (15), and the outer side of the sliding disk (8) is provided with a sliding block (22) that slides in the vertical guide groove (15).

9. The magnesium alloy sample gripping device according to claim 1, characterized in that, The mounting plate (3) is connected to a fixing plate (6) by multiple connecting rods (4), and the upper end of the fixing plate (6) is connected to a shaft arm (7).

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