Vacuum Gripper Device

Abstract

The utility model discloses a vacuum clamping device, including a base and a connecting plate. A suction nozzle is provided at the bottom of the base, a connecting head is provided on the connecting plate, and the connecting head and the suction nozzle are connected by a first through hole. Two groups of clamping mechanisms are provided on the base, and each group of clamping mechanisms includes a pair of symmetrically arranged clamping jaws and a cylinder located in the middle of a pair of clamping jaws. The bottom ends of the clamping jaws extend to below the suction nozzle. The clamping jaws are connected to the base through a first hinge column. The middle parts of the pair of clamping jaws overlap and are connected to the piston rod end of the cylinder through a second hinge column. A second through hole is provided in the base, and the second through hole is connected to the cylinder body of the cylinder and the first through hole. The utility model is provided with a clamping mechanism. When picking up electronic components of a combined structure, the side of the device body is clamped by the clamping mechanism, which can prevent the device body from being offset due to shaking during the positioning and installation process, which helps to improve the positioning and installation accuracy of electronic components and ensure the stability of the production quality of circuit boards.

Description

Technical Field

[0001] The utility model relates to the technical field of SMT production equipment manufacturing, in particular to a vacuum clamping claw device. Background Art

[0002] SMT (surface mount technology) is a common circuit board production technology in the market. In the SMT process, electronic components need to be installed on the circuit board first, and then soldered and fixed by reflow soldering and other methods.

[0003] The process of installing electronic components on a circuit board is achieved by a chip mounter. The existing chip mounter is equipped with a vacuum nozzle device, which picks up the electronic components from the top and then positions and mounts them on the circuit board.

[0004] When the electronic components are of an integral structure, the existing placement machines can well complete the installation of the electronic components on the circuit board and ensure a high positioning and installation accuracy. However, when the electronic components are of a combined structure, the electronic components are only picked up by a vacuum nozzle device, and the electronic components are often not positioned accurately during the subsequent installation process.

[0005] For details, see Figures 1 to 2 The electronic component 100 (such as a connector) of the combined structure usually includes a cover 101 and a device body 102. The device body 102 is hung under the cover 101 through a buckle 103 at the bottom of the cover 101, and there is a gap between the device body 102 and the cover 101. During the process of the vacuum nozzle device sucking the top of the cover 101 to move the electronic component 100 to the circuit board for positioning and installation, the device body 102 under the cover 101 will have a slight shake, and the pins of the device body 102 are prone to offset during the installation process. The positioning and installation accuracy is not high, which directly affects the stability of the production quality of the circuit board. Utility Model Content

[0006] The utility model aims to provide a vacuum clamping claw device.

[0007] In order to achieve the above utility model purpose, the utility model adopts the following technical solutions:

[0008] A vacuum clamping device comprises a base and a connecting plate, wherein a suction nozzle is arranged at the bottom of the base, a connecting head is arranged on the connecting plate, and the connecting head is connected to the suction nozzle via a first through hole;

[0009] Two groups of clamping mechanisms are provided on the base, each group of the clamping mechanisms includes a pair of symmetrically arranged clamping jaws and a cylinder located in the middle of the pair of clamping jaws, the bottom ends of the clamping jaws extend to below the suction nozzle, the clamping jaws are connected to the base through a first hinge column, the middle parts of the pair of clamping jaws overlap and are connected to the piston rod end of the cylinder through a second hinge column, a second through hole is provided in the base, and the second through hole is connected to the cylinder body of the cylinder and the first through hole.

[0010] As a further improved technical solution of the utility model, the base and the connecting plate are fixedly connected by bolts, and a sealing gasket is provided on the matching surface of the base and the connecting plate.

[0011] As a further improved technical solution of the utility model, the clamping claw is divided into a counterweight part and a clamping part, the counterweight part is arranged close to the cylinder, the counterweight part is made of stainless steel material, and the clamping part is made of plastic material.

[0012] As a further improved technical solution of the utility model, the cylinder body of the cylinder is fixedly connected to the base.

[0013] As a further improved technical solution of the utility model, the suction nozzle is made of elastic silicone material.

[0014] Compared with the prior art, the technical effects of the utility model are:

[0015] The utility model is provided with a suction nozzle and a clamping claw mechanism. When picking up electronic components of a combined structure, the suction nozzle adsorbs the top of the cover, and the clamping claw mechanism clamps the side of the component body, which can prevent the component body from shifting due to shaking during the positioning and installation process, helps to improve the positioning and installation accuracy of the electronic components and ensure the stability of the circuit board production quality.

[0016] The cylinder body of the air cylinder and the first through hole are connected through the second through hole, so that when picking up electronic components, the clamping mechanism and the suction nozzle can work synchronously, and at the same time, there is no need to provide external pipes for the air cylinder.

[0017] A stainless steel counterweight is provided on the side of the clamp close to the cylinder. When there is no need to pick up electronic components, the clamp can open and reset itself under the weight of the counterweight. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the side view structure of a combined structure electronic component in the prior art;

[0019] Figure 2 It is a schematic cross-sectional view of a combined structure electronic component in the prior art;

[0020] Figure 3It is a schematic diagram of the main structure of a vacuum clamping claw device in a specific implementation mode of the utility model;

[0021] Figure 4 It is a side view structural schematic diagram of a vacuum clamping claw device in a specific implementation mode of the utility model;

[0022] Figure 5 It is a cross-sectional structural schematic diagram of a vacuum clamping claw device in a specific implementation mode of the utility model;

[0023] Figure 6 It is a schematic cross-sectional structure diagram of a vacuum clamping device in a specific embodiment of the utility model from another angle;

[0024] Figure 7 This is a schematic diagram of the structure of a vacuum clamping device in a specific embodiment of the utility model;

[0025] Figure 8 It is a schematic diagram of the structure of the gripper. DETAILED DESCRIPTION

[0026] The present invention will be described in detail below in conjunction with the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional changes made by a person skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0027] See also Figures 3 to 8 A vacuum gripper device comprises a base 1 and a connecting plate 2, wherein a suction nozzle 3 is provided at the bottom of the base 1, a connecting head 4 is provided on the connecting plate 2, and the connecting head 4 is connected to the suction nozzle 3 by a first through hole 5;

[0028] Two groups of clamping mechanisms are provided on the base 1, each group of the clamping mechanisms includes a pair of symmetrically arranged clamping jaws 6, and a cylinder 7 located in the middle of the pair of clamping jaws 6, the bottom ends of the clamping jaws 6 extend to below the suction nozzle 3, the clamping jaws 6 are connected to the base 1 through a first hinge column 8, the middle parts of the pair of clamping jaws 6 overlap and are connected to the piston rod end of the cylinder 7 through a second hinge column 9, and a second through hole 10 is provided in the base 1, and the second through hole 10 is connected to the cylinder body of the cylinder 7 and the first through hole 5.

[0029] It should be noted that the connector 4 is used to connect to the pipeline of the vacuum pump, and the suction nozzle 3 absorbs the top of the cover 101 of the combined structure electronic component 100 through the vacuum suction force generated by the vacuum pump.

[0030] Two sets of clamping mechanisms are respectively arranged at the front and rear ends of the base 1 , and the clamping mechanisms are used to clamp the side of the device body 102 of the combined structure electronic component 100 , thereby preventing the device body 102 from shaking relative to the cover 101 during movement.

[0031] The cylinder 7 is used as a power component for the clamping movement of the clamping jaw 6. When the piston rod moves upward, the second hinge column 9 drives the clamping jaw 6 to rotate around the first hinge column 8, and the bottom ends of the clamping jaws 6 are brought together to clamp. Please note that the second hinge column 9 is not fixedly connected to the base 1.

[0032] Furthermore, the base 1 and the connecting plate 2 are fixedly connected by bolts (not shown), and a sealing gasket 11 is provided on the matching surfaces of the base 1 and the connecting plate 2.

[0033] The connecting plate 2 is provided with a plurality of screw holes (not shown) for connecting and mounting the utility model on a chip mounter. The sealing pad 11 is made of rubber material and is used to seal the matching gap between the connecting plate 2 and the base 1.

[0034] Furthermore, the clamping jaw 6 is divided into a counterweight portion 61 and a clamping portion 62 . The counterweight portion 61 is arranged close to the cylinder 7 . The counterweight portion 61 is made of stainless steel, and the clamping portion 62 is made of plastic.

[0035] The counterweight part 61 is made of heavier stainless steel material, so that the clamping jaws 6 can be opened and reset more smoothly under the action of the deadweight of the counterweight part 61 when the cylinder 7 is not evacuated.

[0036] The clamping portion 62 is made of a relatively light plastic material, so that there is a large weight difference between the clamping portion 62 and the weight portion 61 , ensuring that the clamping jaws 6 can be opened and reset. Furthermore, the plastic material has a relatively low hardness, which can avoid scratching the electronic components 100 .

[0037] Furthermore, the cylinder body of the cylinder 7 is fixedly connected to the base 1 .

[0038] Furthermore, the suction nozzle 3 is made of elastic silicone material.

[0039] When the utility model is used, the vacuum pump is connected to the connector 4 through a pipeline. After the vacuum pump is turned on to evacuate, the suction nozzle 3 generates suction through the first through hole 5 and is adsorbed on the top of the cover 101 of the electronic component 100 of the combined structure. At the same time, the air in the cylinder 7 is extracted through the second through hole 10, and the piston rod drives the clamping claw 6 to move and clamp the side of the device body 102. After the electronic component 100 is positioned and installed, the vacuum pump stops working, the suction nozzle 3 loses suction, and the clamping claw 6 automatically opens and resets under the action of the counterweight part 61, completing the release of the electronic component 100.

[0040] Compared with the prior art, the technical effects of the utility model are:

[0041] The utility model is provided with a suction nozzle 3 and a clamping claw mechanism. When picking up an electronic component 100 of a combined structure, the suction nozzle 3 adsorbs the top of the cover 101, and the clamping claw mechanism clamps the side of the device body 102, which can prevent the device body 102 from shifting due to shaking during the positioning and installation process, helps to improve the positioning and installation accuracy of the electronic component 100, and ensures the stability of the circuit board production quality.

[0042] The cylinder body of the air cylinder 7 and the first through hole 5 are connected through the second through hole 10 , so that when picking up the electronic component 100 , the clamping mechanism and the suction nozzle 3 can work synchronously, and at the same time, there is no need to provide an external pipeline for the air cylinder 7 .

[0043] A stainless steel counterweight 61 is provided on the side of the clamping jaw 6 close to the cylinder 7 . When there is no need to pick up the electronic component 100 , the clamping jaw 6 can open and reset itself under the weight of the counterweight 61 .

[0044] Finally, it should be noted that the above implementation modes are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned implementation modes, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned implementation modes, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various implementation modes of the utility model.

Claims

1. A vacuum gripper device, characterized in that: It comprises a base and a connecting plate, wherein a suction nozzle is provided at the bottom of the base, a connecting head is provided on the connecting plate, and the connecting head is connected to the suction nozzle via a first through hole; Two groups of clamping mechanisms are provided on the base, each group of the clamping mechanisms includes a pair of symmetrically arranged clamping jaws and a cylinder located in the middle of the pair of clamping jaws, the bottom ends of the clamping jaws extend to below the suction nozzle, the clamping jaws are connected to the base through a first hinge column, the middle parts of the pair of clamping jaws overlap and are connected to the piston rod end of the cylinder through a second hinge column, a second through hole is provided in the base, and the second through hole is connected to the cylinder body of the cylinder and the first through hole.

2. The vacuum gripper device according to claim 1, characterized in that: The base is fixedly connected to the connecting plate by bolts, and a sealing gasket is provided on the matching surfaces of the base and the connecting plate.

3. The vacuum gripper device according to claim 1, characterized in that: The clamping claw is divided into a counterweight part and a clamping part. The counterweight part is arranged close to the cylinder. The counterweight part is made of stainless steel material, and the clamping part is made of plastic material.

4. The vacuum gripper device according to claim 1, characterized in that: The cylinder body of the cylinder is fixedly connected to the base.

5. The vacuum gripper device according to claim 1, characterized in that: The suction nozzle is made of elastic silicone material.

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