Material lifting mechanism

Abstract

The utility model discloses a material lifting mechanism which comprises a lifting assembly, a moving beam, a grabbing assembly and guide assemblies, the lifting assembly is in transmission connection with the moving beam, the moving beam can move in the height direction of the lifting assembly, the moving beam is fixedly connected with the grabbing assembly, and one end of the moving beam is in sliding connection with one guide assembly. The grabbing assembly comprises two pairs of oppositely-arranged shifting finger air cylinders, and a space used for grabbing materials is reserved between the two pairs of shifting finger air cylinders. According to the material lifting mechanism, the movable beam moves up and down linearly under the guidance of the guide assembly, and the height stability can be kept when a (material) chip jig is conveyed. The lifting assembly is used for lifting and lowering the height of the movable beam, and the automation degree of the material lifting mechanism is improved by arranging the lifting assembly. And a plurality of pairs of furnace body chambers can be arranged along the height direction of the lifting assembly, so that the overall space utilization rate of the vacuum reflow soldering furnace equipment is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of components for vacuum reflow oven equipment, specifically relating to a material lifting mechanism. Background Technology

[0002] With the rapid development of industries such as new energy, smart grids, and electric vehicles, the market demand for IGBTs (Insulated Gate Bipolar Transistors) and other power devices has surged, making packaging technology one of the key factors restricting the industry's development. Currently, the domestic market is highly dependent on imported equipment, especially high-end surface mount technology (SMT) machines and vacuum reflow ovens. This not only increases manufacturing costs but also limits the industry's ability to achieve independent control.

[0003] A vacuum reflow oven is a device that performs a soldering process on semiconductor chips in a vacuum environment. This device uses a vacuum environment and reducing process gases to protect the products and solder from oxidation, thereby improving soldering quality, enhancing the heat transfer performance of the soldered devices, and ultimately improving the reliability of electronic devices.

[0004] Material conveying devices are an important component of vacuum reflow ovens. Existing material conveying devices typically transport workpieces by means of a chain conveyor, which moves the workpieces laterally for processing. Current material conveying devices do not yet have a mechanism for transporting materials vertically. Therefore, existing material conveying devices can no longer meet current production needs. Utility Model Content

[0005] To address the aforementioned problems in existing technologies, this utility model provides a material lifting mechanism, including a lifting component, a moving beam, a gripping component, and a guiding component. The moving beam moves linearly up and down under the guidance of the guiding component, maintaining high stability when conveying (material) chip fixtures. Multiple pairs of furnace chambers can be arranged along the height direction of the lifting component, thereby improving the overall space utilization of the vacuum reflow oven equipment.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A material lifting mechanism includes a lifting component, a moving beam, a gripping component, and a guiding component. The lifting component is throttledly connected to the moving beam, the moving beam is movable along the height direction of the lifting component, the moving beam is fixedly connected to the gripping component, and one end of the moving beam is slidably connected to one of the guiding components.

[0008] The gripping component includes two pairs of opposing finger cylinders, with space between the two pairs of finger cylinders for gripping materials.

[0009] Furthermore, the moving beam is horizontally arranged and the lifting assembly is connected to the middle of the moving beam. There are two gripping assemblies, which are symmetrically arranged on both sides of the lifting assembly.

[0010] Furthermore, the lifting assembly also includes a lifting basket fixed to the moving beam. The lifting basket is fixed to one side of the moving beam in the direction of movement and is arranged along the length of the moving beam. The finger cylinders are fixed to the lifting basket and are arranged parallel to each other.

[0011] Furthermore, the guide assembly includes a guide shaft, a shaft mounting plate, a bearing mounting seat, and a linear bearing. Both ends of the guide shaft are fixed to the shaft mounting plate, and the linear bearing is mounted on the guide shaft. The linear bearing is connected to the bearing mounting seat, and the bearing mounting seat is mounted on one end of the moving beam.

[0012] Furthermore, the lifting assembly includes a linear module, one end of which is equipped with a drive motor. A top position sensor and a bottom position sensor are installed in the height direction of the linear module, with the top position sensor located above the bottom position sensor.

[0013] Furthermore, the finger-shifting cylinder is also equipped with a cylinder stroke sensor.

[0014] Furthermore, the movable beam is fixed to the linear module by a support base.

[0015] Compared with existing technologies, the beneficial effects of this solution are:

[0016] This utility model provides a material lifting mechanism, including a lifting component, a moving beam, a gripping component, and a guiding component. The gripping component includes two pairs of opposing pneumatic cylinders. By installing guiding components at both ends of the gripping component, the moving beam moves linearly up and down under the guidance of the guiding components, maintaining high stability when conveying (material) chip fixtures. The lifting component is used to raise and lower the height of the moving beam, improving the automation level of the material lifting mechanism. The lifting component is installed along the height direction, allowing for multiple pairs of furnace chambers to be arranged along this direction, thereby improving the overall space utilization of the vacuum reflow oven equipment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the material lifting mechanism.

[0018] Figure 2 This is a side view of the material lifting mechanism;

[0019] Figure 3 A schematic diagram of the grabbing components and lifting basket structure;

[0020] Figure 4 To capture a partial structural diagram of the component;

[0021] Figure 5 This is a schematic diagram of the support structure.

[0022] The reference numerals in the attached drawings are, in order: lifting assembly 1, lifting basket 11, support 111, linear module 12, drive motor 13, top position sensor 14, bottom position sensor 15, moving beam 2, support seat 21, seat plate 22, diagonal brace 23, upright plate 24, gripping assembly 3, finger cylinder 31, pneumatic gripper 311, cylinder stroke sensor 32, clamp 33, guide assembly 4, guide shaft 41, shaft mounting plate 42, bearing mounting seat 43, linear bearing 44. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings.

[0024] A material lifting mechanism is installed inside a vacuum reflow oven, such as... Figure 1 and Figure 2 As shown, it includes a lifting assembly 1, a moving beam 2, a gripping assembly 3, and a guiding assembly 4. The lifting assembly 1 is connected to the moving beam 2 in a transmission manner. The moving beam 2 can move along the height direction of the lifting assembly 1. The moving beam 2 is fixedly connected to the gripping assembly 3. One end of the moving beam 2 is slidably connected to one of the guiding assemblies 4.

[0025] Among them, such as Figure 3 As shown, the gripping component 3 includes two pairs of oppositely arranged finger cylinders 31, with space between the two pairs of finger cylinders 31 for gripping materials.

[0026] According to a specific embodiment of this utility model, the lifting component 1 is used to raise and lower the height of the moving beam 2. The lifting component 1 is installed along the height direction, located in the middle of the moving beam 2 and fixed to the side of the moving beam 2. The lower part of the moving beam 2 is fixedly connected to the gripping component 3. The number of gripping components 3 can be set to at least one, which can be set according to the actual number of furnace chambers. The gripping component 3 adopts the structure of the finger cylinder 31. The two pairs of oppositely arranged finger cylinders 31 automatically grip the material, thus achieving a higher degree of automation.

[0027] Because of the small weight of the chip, the chip material welding and processing requires high precision. In order to avoid displacement during the transportation process, it is necessary to maintain a high degree of stability during transportation. Therefore, the stability of the moving beam 2 is very important. The two ends of the moving beam 2 of this utility model are slidably connected to a guide component 4. When moving, the moving beam 2 moves up and down in a straight line under the guidance of the guide component 4.

[0028] The material lifting mechanism of this utility model has a lifting component 1 used to raise and lower the height of the moving beam 2. The automation level of the material lifting mechanism is improved by setting the lifting component 1.

[0029] Furthermore, the moving beam 2 is horizontally arranged, and the lifting assembly 1 is connected to the middle of the moving beam 2. There are two gripping assemblies 3, which are symmetrically arranged on both sides of the lifting assembly 1. In this embodiment, two gripping assemblies 3 are provided, corresponding to two furnace chambers respectively. Each set of gripping assemblies 3 includes two pairs of prying finger cylinders 31, which respectively feed materials into the corresponding furnace chamber and remove materials from the corresponding furnace chamber.

[0030] Furthermore, the lifting assembly 1 also includes a lifting basket 11 fixed to the moving beam 2, such as... Figure 3 As shown, the lifting basket 11 is fixed to one side of the moving beam 2 in the direction of movement. Specifically, the lifting basket 11 is fixed to the lower part of the moving beam 2, and multiple supports 111 are fixed to the upper edge of the lifting basket 11. The lifting basket 11 is fixed to the side of the moving beam 2 through the supports 111. The lifting basket 11 is arranged along the length direction of the moving beam 2. The finger cylinder 31 is fixed to the lifting basket 11. In this embodiment, the width of the lifting basket 11 is not limited. That is, the width of the lifting basket 11 can be set according to the volume of the vacuum reflow oven during actual installation and the volume of the furnace chamber used for processing materials. The finger cylinders 31 are arranged parallel to each other and are located in the height direction.

[0031] In this embodiment, as Figure 3 and Figure 4 As shown, the existing structure can be used for the finger cylinder 31 of the lifting assembly 1. The upper end of the finger cylinder 31 is fixed with a clamp 33. The clamp 33 adopts a "C" shaped clamp structure and is fixed on the lower panel of the lifting basket 11. By adjusting the position of the finger cylinder 31 fixed on the clamp 33, the height of the finger cylinder 31 can be adjusted, thereby adapting to the clamping and fixing of chip fixtures of different heights and improving the versatility of this utility model.

[0032] The finger-shifting cylinder 31 is compact, small in size, and lightweight, enabling it to grasp objects with high repeatability. A pneumatic gripper 311 is hinged to the end of the cylinder body. During operation, the gripper 311 can be positioned horizontally or vertically, allowing the chip fixture to be raised or lowered via the linear module 12. The finger-shifting cylinder 31 can be automated by incorporating a magnetic switch, improving automation and reducing manual labor.

[0033] Furthermore, the guide assembly 4 includes a guide shaft 41, a shaft mounting plate 42, a bearing mounting seat 43, and a linear bearing 44. Both ends of the guide shaft 41 are fixed to the shaft mounting plate 42. The guide shaft 41 is equipped with the linear bearing 44, which is connected to the bearing mounting seat 43. The bearing mounting seat 43 is installed at one end of the moving beam 2.

[0034] According to a specific embodiment of this utility model, this embodiment provides a specific structure of a guide assembly 4. The guide shaft 41 of the guide assembly 4 is disposed in the height direction, and both ends of the guide shaft 41 are fixed to the inner wall of the vacuum reflow oven housing through shaft mounting plates 42. A linear bearing 44 is mounted on the guide shaft 41, and the linear bearing 44 is fixed to one end of the moving beam 2 through a bearing mounting seat 43.

[0035] Furthermore, the lifting assembly 1 includes a linear module 12, with a drive motor 13 mounted at one end. A top position sensor 14 and a bottom position sensor 15 are mounted on the linear module 12 along its height, with the top position sensor 14 positioned above the bottom position sensor 15. The linear module 12 is parallel to the guide shaft 41 of the guide assembly 4. The drive motor 13 is mounted at the lower end of the linear module 12. The drive motor 13 can be a servo motor, which has the advantage of high position control accuracy, allowing for precise control during loading. The top position sensor 14 and bottom position sensor 15 are mounted on the linear module 12 along its height. These sensors are used to sense the position of the gripping assembly 3. The top and bottom position sensors 14 and 15 can be existing photoelectric sensors. When the lifting basket 11 reaches the position of the top and bottom position sensors 14 and 15 (the safe position), the drive motor 13 stops working, and the lifting basket 11 stops moving.

[0036] The material lifting mechanism of this utility model includes a lifting component 1 for raising and lowering the height of the moving beam 2. The lifting component 1 includes a linear module 12 located in the height direction. The purpose of this arrangement is to allow multiple pairs of furnace chambers to be set along the height direction of the linear module 12. By using the grabbing component 3 to move materials up and down the multiple pairs of furnace chambers, the overall space utilization of the vacuum reflow oven equipment is improved, which also improves production efficiency.

[0037] The drive motor 13 of the lifting assembly 1 can specifically be an absolute servo motor. An absolute servo motor allows for highly accurate speed and position control, converting voltage signals into torque and speed to drive the controlled object. The servo motor's rotor speed is controlled by the input signal and can respond quickly. In automatic control systems, it is used as an actuator and possesses characteristics such as a small electromechanical time constant, high linearity, and low starting voltage. It can convert received electrical signals into angular displacement or angular velocity output on the motor shaft.

[0038] Furthermore, the finger-shifting cylinder 31 is also equipped with a cylinder stroke sensor 32. The cylinder stroke sensor 32 is used to sense the open or closed state of the pneumatic gripper 311 of the finger-shifting cylinder 31. The cylinder stroke sensor 32 can be a commercially available product.

[0039] Furthermore, such as Figure 5 As shown, the movable beam 2 is fixed to the linear module 12 by a support base 21. The support base 21 is a "T" shaped plate structure, including a base plate 22, a diagonal brace 23, and a vertical plate 24. The base plate 22 is horizontally fixed to the lower part of the movable beam 2 and connected by bolts. The diagonal brace 23 is fixed to the lower part of the base plate 22, and one side of the diagonal brace 23 is fixed to the vertical plate 24, thereby strengthening the base plate 22. The vertical plate 24 has holes, and the ball screw of the linear module 12 is connected to the movable seat. The vertical plate 24 is connected to the side of the movable seat of the linear module 12 by bolts.

[0040] In operation, during the feeding stage: the gripping assembly 3, located above the vacuum reflow oven, moves downwards via the linear module 12. After the position is confirmed by the bottom position sensor 15 of the linear module 12, the gripping assembly 3's finger cylinder 31 hooks the chip fixture from the back, lifts the chip fixture, and drives the linear module 12 to move above the vacuum reflow oven via the drive motor 13. At this time, the automatic door of the oven chamber, which is in the waiting state, opens. Then, the chip fixture moves downwards along with the gripping assembly 3. After the position is confirmed by the top position sensor 14 of the oven chamber in the waiting state, the gripping assembly 3's finger cylinder 31 lowers the chip fixture. Subsequently, the gripping assembly 3 returns to the top of the vacuum reflow oven, and finally, the automatic door of the oven chamber closes automatically.

[0041] Discharge stage: The electrical control system opens the automatic door of the furnace chamber, and the gripping component 3 moves downward. After the position of the gripping component is confirmed by the bottom position sensor 15 of the furnace chamber in the completed state, the finger cylinder 31 of the gripping component 3 hooks the chip fixture from the back. Then, the gripping component 3 moves upward with the chip fixture to the top of the vacuum reflow oven. At the same time, the automatic door of the furnace chamber closes. After the system confirms that all the automatic doors of the furnace chamber are closed, the chip fixture moves downward along the linear module 12 with the gripping component 3. After the position is confirmed by the bottom position sensor 15 of the linear module 12, the finger cylinder 31 of the gripping component 3 lowers the chip fixture onto the horizontal conveyor table for continued conveying.

[0042] Finally, it should be noted that in the description of this utility model, the terms "vertical," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0043] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0044] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A material lifting mechanism, characterized in that: It includes a lifting assembly, a moving beam, a gripping assembly, and a guiding assembly. The lifting assembly is connected to the moving beam in a transmission manner. The moving beam can move along the height direction of the lifting assembly. The moving beam is fixedly connected to the gripping assembly. One end of the moving beam is slidably connected to one of the guiding assemblies. The gripping component includes two pairs of opposing finger cylinders, with space between the two pairs of finger cylinders for gripping materials.

2. The material lifting mechanism as described in claim 1, characterized in that: The moving beam is horizontally arranged and the lifting assembly is connected to the middle of the moving beam. There are two gripping assemblies, which are symmetrically arranged on both sides of the lifting assembly.

3. The material lifting mechanism as described in claim 2, characterized in that: The lifting assembly includes a lifting basket fixed to the moving beam. The lifting basket is fixed to one side of the moving beam in the direction of movement and is arranged along the length of the moving beam. The finger cylinders are fixed to the lifting basket and are arranged parallel to each other.

4. A material lifting mechanism as described in claim 3, characterized in that: The guide assembly includes a guide shaft, a shaft mounting plate, a bearing mounting seat, and a linear bearing. Both ends of the guide shaft are fixed to the shaft mounting plate. The guide shaft is equipped with the linear bearing, which is connected to the bearing mounting seat. The bearing mounting seat is installed at one end of the moving beam.

5. A material lifting mechanism as described in claim 4, characterized in that: The lifting assembly also includes a linear module, one end of which is equipped with a drive motor. A top position sensor and a bottom position sensor are installed in the height direction of the linear module, with the top position sensor located above the bottom position sensor.

6. A material lifting mechanism as described in any one of claims 1-5, characterized in that: The finger-shifting cylinder is also equipped with a cylinder stroke sensor.

7. A material lifting mechanism as described in claim 5, characterized in that: The movable beam is fixed to the linear module by a support base.

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