Automatic conveying and grabbing device

Abstract

The utility model relates to an automatic conveying and grabbing device, which is suitable for keeping a constant-speed conveying state from a starting point to an end point in the conveying and single-time feeding process of a to-be-welded part in a reflow oven chamber heated and cooled by a single chamber, and comprises a crane beam mounted at the top of a reflow oven frame, and a grabbing device is connected onto the crane beam in a sliding manner; the grabbing device comprises a multi-direction sliding assembly which slides in a reciprocating mode with the crane beam as the motion reference, a clamping plate which is driven by the multi-direction sliding assembly and moves in the x direction, the y direction and the z direction in a reciprocating mode, and a clamping jaw which is installed on the side, facing the tool, of the clamping plate and used for grabbing the tool. The feeding device is suitable for the vacuum reflow furnace with a single cavity for heating and cooling, the to-be-welded parts do not need to be intermittently fed in a plurality of unit furnaces, and the defect rate of collision, chip pin offset and pseudo soldering caused by inertia in the conveying process is greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of vacuum reflux furnace technology, and in particular to an automated conveying and gripping device. Background Technology

[0002] A reflow oven is a device that achieves soldering by providing a heated environment that melts solder paste or pre-formed solder pads.

[0003] Currently, reflow ovens on the market typically consist of multiple chambers arranged to form a complete reflow oven. Each chamber has a different temperature, including a gradually heating welding section and a cooling section. During the process of feeding the parts to be welded into the reflow oven, a conveyor chain is usually used. The conveyor chain pauses at corresponding time points during operation, allowing the parts to be welded to remain in the corresponding temperature chamber, thus completing the heating, welding, and cooling process.

[0004] This continuous forward transport method, due to the inertia of the components to be soldered, may cause collisions during multiple transport and pauses, resulting in defects such as chip pin misalignment and cold solder joints. Utility Model Content

[0005] In response to the shortcomings of the existing production technology, the applicant provides a reasonably structured automated conveying and gripping device to replace the original feeding method with multiple stops, thereby reducing welding defects caused by inertia.

[0006] The technical solution adopted in this utility model is as follows:

[0007] An automated conveying and gripping device is suitable for conveying parts to be welded within the chamber of a single-chamber reflow oven with heating and cooling. During a single feeding process, the movement distance from the starting point to the end point maintains a constant conveying speed.

[0008] This includes a traveling beam installed on top of the reflow oven frame, with a gripping device slidably connected to the traveling beam, the gripping device comprising:

[0009] The multi-directional sliding assembly reciprocates and slides with the traveling beam as the motion reference.

[0010] The clamping plate, driven by the multi-directional sliding assembly, reciprocates in the x, y, and z directions.

[0011] The gripper is installed on the side of the clamping plate facing the tooling and is used to grip the tooling.

[0012] As a further improvement to the above technical solution:

[0013] The crane beam is positioned in the x-direction, and the multi-directional sliding assembly includes:

[0014] The X-axis plate slides back and forth on the crane beam.

[0015] The y-axis plate is slidably connected to the x-axis plate.

[0016] A z-axis plate is mounted on a y-axis plate. A z-axis lifting assembly is installed on the z-axis plate to drive the clamping plate to rise and fall.

[0017] The x-axis, y-axis, and z-axis are each equipped with an independent power source.

[0018] Stacking of x-axis board, y-axis board, and z-axis board.

[0019] The structure that drives the clamping plate via the Z-axis lifting assembly is a combination of cylinder push-pull and lead screw transmission.

[0020] The Z-axis lifting assembly includes a motor and a lead screw that is driven to rotate by the motor. The lead screw drives the claw fixing plate to reciprocate longitudinally.

[0021] The clamping plate remains in a horizontal position at all times.

[0022] The gripper consists of two linked gripper bodies, with an opening and closing linkage assembly between the two gripper bodies. The opening and closing linkage assembly pushes and pulls the gripper bodies along the direction of the traveling beam to achieve opening and closing.

[0023] The claw body engages and limits the tooling.

[0024] At least two sets of gripping devices should be installed on a single crane beam.

[0025] The beneficial effects of this utility model are as follows:

[0026] This invention is applicable to vacuum reflow ovens with single-chamber heating and cooling. Under this premise, the workpiece to be welded does not need to be fed intermittently between multiple unit furnaces. It can be fed and unloaded in a single conveying process by a multi-directional sliding component, which greatly reduces the defect rate of collisions, chip pin misalignment, and cold solder joints caused by inertia during the conveying process. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the reflux furnace frame of this utility model.

[0028] Figure 2 This utility model relates to the traveling beam and multi-directional sliding assembly installed on the top of the reflux furnace frame.

[0029] Figure 3 This is a schematic diagram of a set of multi-directional sliding components according to the present invention.

[0030] Figure 4 This is a schematic diagram of the opening and closing principle of the gripper in this utility model.

[0031] The components include: 1. Reflow oven frame; 2. Multi-directional sliding assembly; 3. Clamping plate; 4. Clamping claws;

[0032] 201. X-axis plate; 202. Y-axis plate; 203. Z-axis plate; 204. Motor; 205. Lead screw; 206. Y-axis slide rail;

[0033] 401. Claw body; 402. Opening and closing cylinder; 403. Driving slider; 404. Driving connecting rod; 405. Balance wheel; 406. Driven connecting rod; 407. Driven slider. Detailed Implementation

[0034] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0035] like Figures 1-4 As shown, the automated conveying and gripping device of this embodiment is suitable for conveying parts to be welded in a reflow oven chamber with single-chamber heating and cooling. During a single feeding process, the movement distance from the starting point to the end point remains at a constant speed.

[0036] This includes a traveling beam installed on top of the reflow oven frame 1, with a gripping device slidably connected to the traveling beam. The gripping device includes:

[0037] Multi-directional sliding component 2 reciprocates and slides with the traveling beam as the motion reference.

[0038] The clamping plate 3 is driven by the multi-directional sliding component 2 to reciprocate in the x, y, and z directions.

[0039] The gripper 4 is installed on the side of the clamping plate 3 facing the tooling and is used to grip the tooling.

[0040] The traveling beam is positioned in the x-direction, and the multi-directional sliding assembly 2 includes:

[0041] The x-axis plate 201 slides back and forth on the crane beam.

[0042] The y-axis plate 202 is slidably connected to the x-axis plate 201.

[0043] The z-axis plate 203 is installed on the y-axis plate 202. A z-axis lifting assembly is installed on the z-axis plate 203 to drive the clamping plate 3 to rise and fall.

[0044] The x-axis plate 201, y-axis plate 202, and z-axis plate 203 are each equipped with an independent power source.

[0045] Stacking of x-plane 201, y-plane 202, and z-plane 203.

[0046] The structure driven by the Z-axis lifting component and the clamping plate 3 is a cylinder push-pull mechanism, and a lead screw 205 transmission mechanism.

[0047] The Z-axis lifting assembly includes a motor 204 and a lead screw 205 that is driven to rotate by the motor 204. The lead screw 205 drives the claw fixing plate to reciprocate longitudinally.

[0048] The clamping plate 3 always remains in a horizontal position.

[0049] The gripper 4 includes two linked gripper bodies 401, and an opening and closing linkage is provided between the two gripper bodies 401. The opening and closing linkage pushes and pulls the gripper bodies 401 along the direction of the traveling beam to achieve opening and closing.

[0050] The claw body 401 engages with the tooling for a limiting action.

[0051] At least two sets of gripping devices should be installed on a single crane beam.

[0052] The specific structure and working principle of this utility model are as follows:

[0053] like Figure 1 The figure shows the reflow oven frame 1 used in the automated conveying and gripping device of this application. Multiple unit furnaces are installed within the reflow oven frame 1, as shown in the several frame spaces separated by the figure, with one unit furnace placed in each frame space.

[0054] The reflow oven to which this application applies is special in that a single unit furnace can complete the heating, welding, and cooling processes of a group of workpieces to be welded. The working process of the reflow oven is not within the scope of protection of this application, and therefore will not be described in detail. The purpose of this application is to provide an automated conveying and gripping device for loading and unloading tooling for such a reflow oven that can complete the entire welding process in a single unit furnace.

[0055] Unlike conventional multi-stage, intermittent conveying systems, the conveying motion in this application is uninterrupted. At startup, a tooling device fully loaded with parts to be welded is lifted and conveyed along the traveling beam to the designated unit furnace. The tooling is then placed inside the unit furnace. After the unit furnace is closed, heating, welding, cooling, and shaping are performed. The unit furnace is then reopened, and the gripping device grabs the tooling fully loaded with finished products. The tooling is then lifted and output outside the equipment.

[0056] The object of protection in this application is this dedicated gripping device, such as... Figure 2 As shown, it includes a traveling beam, which is installed on top of the reflow furnace frame 1. In one embodiment, two sets of multi-directional sliding components 2 are used, which are slidably connected to the traveling beam.

[0057] Each set of multi-directional sliding components 2 can reciprocate in the x, y, and z directions. For example... Figure 3 As shown, with the crane beam as the x-axis, an x-axis plate 201 is reciprocatingly slidably connected on the crane beam. The x-axis plate 201 is an L-shaped steel section, with its vertical side attached to the crane beam and its horizontal side serving as a plate to support the y-axis and z-axis motion structures. For ease of description, the x-axis plate 201 in the following text refers to the horizontal side.

[0058] A y-direction through slot and a y-direction slide rail 206 are formed on the x-direction plate 201, and a y-direction plate 202 is slidably connected to the y-direction slide rail 206. A z-direction plate 203 is raised and lowered on the y-direction plate 202. A z-direction lifting assembly is provided on the z-direction plate 203. The z-direction lifting assembly drives a lead screw 205 that passes through the y-direction plate 202 via a motor 204 mounted on the z-direction plate 203. The bottom of the lead screw 205 drives the clamping plate 3 to move up and down, and the top of the lead screw 205 drives the z-direction plate 203 to move up and down.

[0059] At this point, under the action of the multi-directional sliding assembly 2, the clamping plate 3 can move upward in the x, y, and z directions. An opening and closing linkage assembly is installed on the side of the clamping plate 3 facing the tooling. The opening and closing linkage assembly drives the two claws 401 of a set of grippers 4 to open and close, for gripping the tooling.

[0060] like Figure 4 As shown, the opening and closing linkage assembly includes an opening and closing cylinder 402 mounted on the bottom surface of the jaw fixing plate. The piston rod of the opening and closing cylinder 402 pushes an active slider 403, which reciprocates linearly on the bottom surface of the jaw fixing plate. An active connecting rod 404 is hinged to the active slider 403. The other end of the active connecting rod 404 is rotatably connected to a swing wheel 405 at the midpoint of the jaw fixing plate. A driven connecting rod 406 is hinged to the side of the swing wheel 405 away from the active connecting rod 404. The driven connecting rod 406 is hinged to a driven slider 407. The active slider 403 and the driven slider 407 are slidably connected to both ends of the jaw fixing plate.

[0061] When the opening / closing cylinder 402 pushes the active slider 403, the active slider 403 pushes and pulls the active connecting rod 404, which in turn pushes and pulls the balance wheel 405 to rotate. Since two connecting rods are symmetrically hinged on both sides of the balance wheel 405, the balance wheel 405 can push the driven connecting rod 406 to swing, and the driven connecting rod 406 pushes and pulls the driven slider 407. The active slider 403 and the driven slider 407 are respectively fixedly connected to two claw bodies 401, thereby realizing the synchronous opening and closing of the two claw bodies 401.

[0062] The advantage of this solution is that it provides a lifting-type loading and unloading structure, which can significantly reduce welding defects caused by inertial impact compared to traditional conveyor lines.

[0063] The above description is an explanation of the present utility model and not a limitation thereof. The scope of the present utility model is defined by the claims. Within the protection scope of the present utility model, any form of modification may be made.

Claims

1. An automated conveying and gripping device, characterized in that: Suitable for conveying workpieces to be welded within a single-chamber reflow oven with heating and cooling. During a single feeding process, the movement distance from the starting point to the end point maintains a constant conveying speed. This includes a traveling beam mounted on top of the reflow oven frame (1), on which a gripping device is slidably connected, the gripping device comprising: The multi-directional sliding component (2) reciprocates and slides with the traveling beam as the motion reference. The clamping plate (3) is driven by the multi-directional sliding component (2) to reciprocate in the xyz directions. The gripper (4) is installed on the side of the clamping plate (3) facing the tooling and is used to grip the tooling.

2. The automated conveying and gripping device as described in claim 1, characterized in that: The traveling beam is set in the x-direction, and the multi-directional sliding assembly (2) includes: The x-axis plate (201) slides back and forth on the crane beam. The y-axis plate (202) is slidably connected to the x-axis plate (201). A z-axis plate (203) is installed on a y-axis plate (202). A z-axis lifting assembly is installed on the z-axis plate (203) to drive the clamping plate (3) to rise and fall. The x-axis plate (201), y-axis plate (202), and z-axis plate (203) are each equipped with an independent power source.

3. The automated conveying and gripping device as described in claim 2, characterized in that: The x-axis plate (201), y-axis plate (202), and z-axis plate (203) are stacked.

4. The automated conveying and gripping device as described in claim 2, characterized in that: The structure driven by the z-axis lifting component and the clamping plate (3) is a cylinder push-pull and a lead screw (205) transmission.

5. The automated conveying and gripping device as described in claim 4, characterized in that: The Z-axis lifting assembly includes a motor (204) and a lead screw (205) that is driven to rotate by the motor (204). The lead screw (205) drives the claw fixing plate to reciprocate longitudinally.

6. The automated conveying and gripping device as described in claim 1, characterized in that: The clamping plate (3) is always kept in a horizontal position.

7. The automated conveying and gripping device as described in claim 1, characterized in that: The gripper (4) includes two linked gripper bodies (401), and an opening and closing linkage is provided between the two gripper bodies (401). The opening and closing linkage pushes and pulls the gripper body (401) along the direction of the traveling beam to achieve opening and closing.

8. The automated conveying and gripping device as described in claim 7, characterized in that: The claw body (401) engages and limits the tooling.

9. The automated conveying and gripping device as described in claim 1, characterized in that: At least two sets of gripping devices should be installed on a single crane beam.

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