Metal part grabbing mechanism

Abstract

The utility model relates to the technical field of mechanical grabbing structures, and discloses a metal part grabbing mechanism which comprises a mounting frame, the mounting frame comprises a mounting plate, an adsorption assembly is arranged on the lower side of the mounting plate, and the adsorption assembly comprises a supporting plate fixedly arranged at the lower end of the mounting plate; a sliding groove is formed in the middle of the supporting plate, a negative pressure hole communicated with the sliding groove is formed in the middle of the supporting plate, an electromagnet is arranged on the outer side of the negative pressure hole in the supporting plate, a driving assembly is arranged in the negative pressure hole and comprises a piston plate arranged in the negative pressure hole, and an elastic telescopic piece is arranged on the piston plate; through cooperative use of the adsorption assembly, the driving assembly, the grabbing assembly and the conductive strip and cooperation of mechanical clamping, negative pressure adsorption and magnetic adsorption, stable grabbing of metal parts of different shapes, sizes and weights can be achieved, and compared with the prior art, the metal part grabbing device has the advantages of being wide in application range and good in stability.

Description

Technical Field

[0001] The present application relates to the technical field of metal parts grasping, and in particular to a metal parts grasping mechanism. Background Art

[0002] The metal parts grabbing mechanism is a device used for grabbing when screening mechanical parts. In the prior art, the metal parts grabbing mechanism mostly adopts a single clamping method, such as mechanical clamping or magnetic adsorption.

[0003] In actual use, these single gripping methods often have problems with unstable clamping and limited applicability when facing metal parts of different shapes, sizes and materials. For example, mechanical clamping may cause uneven clamping force due to the uneven surface of the part; and magnetic adsorption may not work effectively due to the non-magnetic material of the part.

[0004] The above information disclosed in the background technology is only used to increase the understanding of the background technology of the present application, and therefore, it may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0005] In order to solve the problems of unstable clamping and limited application scope when a single grasping method is used for metal parts of different shapes, sizes and materials, the present application provides a metal part grasping mechanism.

[0006] The metal parts grabbing mechanism provided in this application adopts the following technical solution:

[0007] A metal parts grabbing mechanism comprises a mounting frame, an adsorption assembly, a driving assembly and a grabbing assembly;

[0008] Wherein, the mounting frame comprises a mounting plate with a slide groove;

[0009] The adsorption assembly includes a support plate with a negative pressure hole for negative pressure adsorption of the workpiece, an electromagnet is arranged on the outer side of the support plate, and the electromagnet is electrically connected to an external power supply unit for magnetically adsorbing the magnetic metal workpiece;

[0010] The driving assembly comprises a piston plate slidably arranged in the negative pressure hole, a moving member is arranged on the piston plate, and an elastic telescopic member is connected between the moving member and the piston plate, which is used to provide a telescopic range for the moving member to move when the moving member pulls the piston plate to move and is blocked;

[0011] The grabbing assembly comprises a clamping arm with a guide groove, the clamping arm is hinged on a supporting plate and movably connected to a moving part for clamping metal parts.

[0012] Preferably, the mounting frame further comprises a connecting rod with a threaded mounting hole for connecting with the robot arm and the mobile feeding system, and the connecting rod is fixedly disposed on the mounting plate.

[0013] Preferably, the moving part includes a sleeve slidably set in a slide groove, a linear actuator is provided on the sleeve for driving the sleeve to move along the slide groove, a conductive sheet is provided on the sleeve, and a conductive strip is provided on the upper side of the conductive sheet in the slide groove for contacting and separating the conductive strip from the conductive sheet to complete the connection and disconnection between the electromagnet and the power supply.

[0014] Preferably, the elastic telescopic member comprises a pull rod, a connecting sleeve and a spring;

[0015] The pull rod is arranged at the lower end of the sleeve and can slide along the connecting sleeve. The connecting sleeve is coupled to the piston plate. The spring is placed between the two and is used to compress the connecting sleeve when the sleeve is blocked from pulling the piston plate to provide a range for the sleeve to move.

[0016] Preferably, a clamping block is hinged at the end of the clamping arm, a connecting piece is slidably arranged in the guide groove, and the connecting piece slides through the slide groove and is fixedly connected to the sleeve.

[0017] In summary, this application includes the following beneficial technical effects:

[0018] Through the coordinated use of the adsorption component, the drive component, the grasping component and the conductive strip, the linear actuator contracts, driving the conductive sheet and the pull rod to move upward, pulling the connecting sleeve and the piston plate to move upward. After the conductive sheet contacts the conductive strip, the electromagnet is energized to form magnetic adsorption. At the same time, the piston plate moves up to generate negative pressure to form a closed negative pressure hole. When the piston plate is blocked, the spring is compressed, and the pull rod and the sleeve continue to move upward. During this process, the clamping arm rotates to complete the mechanical clamping. Through the coordination of mechanical clamping, negative pressure adsorption and magnetic adsorption, stable grasping of metal parts of different shapes, sizes and weights can be achieved. Compared with the existing technology, it has the advantages of wide application range and good stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of a three-dimensional structure from a first-view perspective of an embodiment of the application;

[0020] Figure 2 is a schematic diagram of a second perspective stereoscopic structure of an embodiment of the application;

[0021] Figure 3 It is a schematic diagram of the three-dimensional structure from a third perspective of an embodiment of the application.

[0022] Explanation of the reference numerals: 1. mounting frame; 101. mounting plate; 102. connecting rod; 2. adsorption assembly; 201. support plate; 202. cushion; 203. electromagnet; 3. driving assembly; 301. linear actuator; 302. moving part; 3021. sleeve; 3022. slider; 3023. conductive sheet; 303. elastic telescopic part; 3031. pull rod; 3032. connecting sleeve; 3033. spring; 304. piston plate; 4. grabbing assembly; 401. clamping arm; 402. clamping block; 5. conductive strip. DETAILED DESCRIPTION

[0023] The following is combined with Figure 1-3 This application is described in further detail.

[0024] The present application embodiment discloses a metal parts grabbing mechanism. Figure 1-3 A metal part grabbing mechanism includes a mounting frame 1, the mounting frame 1 includes a mounting plate 101, a plurality of slide grooves are arranged on the inner side of the mounting plate 101, an adsorption assembly 2 is installed on the lower side of the mounting plate 101, and the adsorption assembly 2 includes a support plate 201 fixedly mounted on the lower end of the mounting plate 101, a negative pressure hole connected to the slide groove is opened in the middle of the support plate 201, and an electromagnet 203 is installed on the outer side of the negative pressure hole in the support plate 201, and the magnetic metal parts are magnetically adsorbed by the electromagnet 203 to improve the grabbing efficiency. Stability, a driving component 3 is installed in the negative pressure hole, and the driving component 3 includes a piston plate 304 installed in the negative pressure hole. The air pressure in the negative pressure hole is changed by moving the piston plate 304, and the metal parts blocking the negative pressure hole can be adsorbed. An elastic telescopic member 303 is installed on the piston plate 304, and a moving member 302 is installed on the elastic telescopic member 303. Several grabbing components 4 are installed on the outer side of the moving member 302 on the support plate 201, and the grabbing components 4 are driven by the moving member 302 to clamp the metal parts;

[0025] By adopting the above technical solution, through the coordination of mechanical clamping, negative pressure adsorption and magnetic adsorption, the stability of clamping can be improved and the scope of applicable parts of clamping can be expanded.

[0026] Reference Figure 1 A connecting rod 102 is installed on the top of the mounting plate 101. The connecting rod 102 is provided with a plurality of threaded mounting holes, and the clamping jaws are fixed at a designated position through the threaded mounting holes.

[0027] Reference Figure 2A linear actuator 301 is installed in the mounting plate 101. The linear actuator 301 can be selected from servo electric cylinders, hydraulic cylinders, telescopic cylinders, etc. as needed. The moving part 302 includes a sleeve 3021 installed at the movable end of the linear actuator 301. A plurality of sliders 3022 are installed on the sleeve 3021. The connecting sleeves 3032 are slidably connected with the corresponding slide grooves respectively. A conductive sheet 3023 is installed on the slider 3022. Conductive strips 5 are installed on both sides of the conductive sheet 3023 on the slide groove. The contact and separation between the conductive strip 5 and the conductive sheet 3023 completes the connection and disconnection between the electromagnet 203 and the power supply, and the power-off electromagnet 203 can be reset without magnetic force.

[0028] Reference Figure 3 The elastic telescopic part 303 includes a pull rod 3031 installed at the lower end of the sleeve 3021, and a connecting sleeve 3032 is provided on the outer sliding sleeve of the pull rod 3031. A spring 3033 is provided between the pull rod 3031 and the connecting sleeve 3032. The piston plate 304 is threadedly connected to the connecting sleeve 3032. The pull rod 3031 is driven by the moving part 302 to pull the connecting sleeve 3032 upward. When the internal negative pressure of the negative pressure hole reaches a certain level and encounters resistance, the spring 3033 is compressed, so that the pull rod 3031 and the sleeve 3021 continue to move upward to complete the clamping operation.

[0029] Reference Figure 2 A soft pad 202 is installed at the lower end of the support plate 201. The soft pad 202 is deformed by force to increase the air tightness of the upper surface of the workpiece that blocks the negative pressure hole.

[0030] Reference Figure 2 The grabbing assembly 4 includes a clamping arm 401 hingedly mounted on the supporting plate 201, a clamping block 402 hingedly mounted on the lower end of the clamping arm 401, a guide groove mounted on the upper side of the clamping arm 401, a pin mounted in the slide groove, the pin being fixedly connected to the corresponding slider 3022, the pin being driven upward by the slider 3022, driving the clamping arm 401 to rotate, and clamping the parts.

[0031] The implementation principle of a metal part grabbing mechanism of the present application embodiment is as follows: the connecting rod 102 is fixed to the mounting surface of the robot arm and the mobile feeding system by bolts. When grabbing, the lower surface of the soft pad 202 is firstly made to abut against the metal part, and then the linear actuator 301 is controlled to contract, thereby driving the sleeve 3021 and the slider 3022 to move upward, pulling the conductive sheet 3023 and the pull rod 3031 to move upward, thereby making the connecting sleeve 3032 and the piston plate 304 move upward. When the conductive sheet 3023 moves upward and contacts the conductive strip 5, the conductive sheet 3023 is moved upward and contacts the conductive strip 5. The magnet 203 is connected to the power supply, so that the electromagnet 203 magnetically adsorbs the metal parts and moves upward with the piston plate 304. When the metal parts seal the negative pressure hole, negative pressure is generated in the negative pressure hole to adsorb the metal parts. When the internal negative pressure of the negative pressure hole reaches a certain level and encounters resistance, the spring 3033 is compressed, so that the pull rod 3031 and the sleeve 3021 continue to move upward, and the slider 3022 drives the pin shaft to move upward, driving the clamping arm 401 to rotate, completing the mechanical clamping, clamping and fixing the parts as early as possible, and having the advantage of good stability.

[0032] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0033] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0034] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

[0035] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A metal parts grabbing mechanism, characterized in that: It comprises a mounting frame (1), an adsorption component (2), a driving component (3) and a grabbing component (4); Wherein, the mounting frame (1) comprises a mounting plate (101) with a slide groove; The adsorption assembly (2) comprises a support plate (201) with a negative pressure hole, which is used for negative pressure adsorption of the workpiece; an electromagnet (203) is arranged on the outer side of the support plate (201); the electromagnet (203) is electrically connected to an external power supply unit, and is used for magnetically adsorbing the magnetic metal workpiece; The driving assembly (3) comprises a piston plate (304) slidably arranged in the negative pressure hole, a moving member (302) is arranged on the piston plate (304), and an elastic telescopic member (303) is connected between the moving member (302) and the piston plate (304) to provide a telescopic range for the moving member (302) to move when the moving member (302) pulls the piston plate (304) to move and the movement is blocked; The gripping assembly (4) comprises a clamping arm (401) with a guide groove. The clamping arm (401) is hinged on the support plate (201) and movably connected to the moving part (302) for clamping metal parts.

2. A metal parts grabbing mechanism according to claim 1, characterized in that: The mounting frame (1) further comprises a connecting rod (102) with a threaded mounting hole, which is used to be connected to a mechanical arm and a mobile feeding system, and the connecting rod (102) is fixedly arranged on the mounting plate (101).

3. A metal parts grabbing mechanism according to claim 2, characterized in that: The moving member (302) comprises a sleeve (3021) slidably arranged in a slide groove, a linear actuator (301) is arranged on the sleeve (3021) for driving the sleeve (3021) to move along the slide groove, a conductive sheet (3023) is arranged on the sleeve (3021), and a conductive strip (5) is arranged on the upper side of the conductive sheet (3023) in the slide groove for contacting and separating the conductive strip (5) from the conductive sheet (3023) to complete the connection and disconnection between the electromagnet (203) and the power supply.

4. A metal parts grabbing mechanism according to claim 3, characterized in that: The elastic telescopic member (303) comprises a pull rod (3031), a connecting sleeve (3032) and a spring (3033); The pull rod (3031) is arranged at the lower end of the sleeve (3021) and can slide along the connecting sleeve (3032). The connecting sleeve (3032) is coupled and connected to the piston plate (304). The spring (3033) is placed between the two and is used to compress the connecting sleeve (3032) when the sleeve (3021) pulls the piston plate (304) to move and is blocked, thereby providing a range for the sleeve (3021) to move.

5. A metal parts grabbing mechanism according to claim 4, characterized in that: A clamping block (402) is hingedly connected to the end of the clamping arm (401), and a connecting piece is slidably arranged in the guide groove. The connecting piece slides through the slide groove and is fixedly connected to the sleeve (3021).

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