Automatic welding device for refrigerator hinge

Abstract

The invention discloses an automatic welding device for refrigerator hinges, and relates to the technical field of hinge welding. The refrigerator hinge automatic welding device comprises a welding table, a welding head driven by a first electric push rod is assembled in the welding table, and a clamping base is slidably connected into the welding table; the servo motor is assembled on the side face of the welding table, and the side face of an output shaft of the servo motor is fixedly connected with a reciprocating lead screw. According to the automatic welding device for the refrigerator hinge, the refrigerator hinge is placed on the welding table, a servo motor is started to drive a reciprocating lead screw to rotate, so that two clamping seats oppositely move in the horizontal direction, and a positioning plate, a first elastic telescopic rod, a clamping plate, a first hydraulic bin, a first stress rod, a first transmission rod, a torsional spring rod and a limiting plate are matched; the front side and the rear side of the refrigerator hinge can be clamped and positioned through the clamping device, the possibility that the refrigerator hinge deforms during welding operation is reduced, and the device is more stable in use.

Description

Technical Field

[0001] The present invention relates to the technical field of hinge welding, and particularly to an automatic welding device for refrigerator hinges. Background Art

[0002] The automatic welding device for refrigerator hinges is an automated equipment developed to improve the production efficiency and welding quality of refrigerator hinges. The hinge is a key component connecting the refrigerator door and the refrigerator body, and undertakes the function of opening and closing the door. The traditional hinge welding process usually relies on manual operation or semi-automated equipment, which has problems such as poor welding accuracy, low production efficiency, and high labor intensity. Therefore, the development of an automatic hinge welding device that can achieve high precision, high efficiency, and sustainable operation is of great significance for refrigerator manufacturers to improve production capacity, reduce costs, and enhance product quality.

[0003] The existing automatic welding device for refrigerator hinges includes a device main body. Inside the device main body, there is a workbench. On the workbench, there are a turntable part, a loading and unloading part, a welding part, and an unloading part. On one side of the device main body, there is a bushing loading part. The bushing loading part includes a vibrating loading tray. The loading and unloading part includes a pushing structure, a picking structure, and an auxiliary feeding structure. The turntable part includes a rotating motor. A turntable is connected to the rotating motor. On the turntable, there are multiple hinge plate combination placement stations. The welding part includes an upper electrode structure and a lower electrode structure. The unloading part is installed on the right side of the workbench. The unloading part includes an unloading transplanting cylinder, and an unloading structure is connected to the unloading transplanting cylinder.

[0004] In the above application document, corresponding welding operations are performed by using the welding part, and before the welding operation, the refrigerator hinge is clamped by a clamping part. However, when clamping the hinge in a bent state, the clamping effect on the front and back sides and the bottom position of the hinge is poor, making it possible for the refrigerator hinge to deform during the welding operation of the device. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the present invention provides an automatic welding device for refrigerator hinges, which solves the problems raised in the above background art. To achieve the above objectives, the present invention is realized through the following technical solutions: An automatic welding device for refrigerator hinges, comprising: A welding table, inside which a welding head driven by an electric push rod I is assembled, and a clamping seat is slidably connected inside the welding table; A servo motor, which is assembled on the side of the welding table, and a reciprocating lead screw is fixedly connected to the side of the output shaft of the servo motor. The outside of the reciprocating lead screw is connected to the clamping seat through a set thread; A positioning plate is fixedly connected to the side of the clamping seat. The side of the positioning plate is connected to a clamping plate through an elastic telescopic rod I. The side of the clamping plate is rotatably connected to a torsion spring rod. A limiting plate is fixedly connected to the outside of the torsion spring rod. A transmission member is arranged between the positioning plate and the limiting plate for transmission. An auxiliary cleaning assembly for cleaning welding slag is assembled inside the welding table. An auxiliary clamping assembly for clamping the refrigerator hinge is assembled on the side of the clamping plate. Through the setting of the device, the front and rear sides of the refrigerator hinge can be clamped and positioned, reducing the possibility of deformation of the refrigerator hinge during welding operation and making the use of the device more stable.

[0006] Preferably, the transmission member includes a hydraulic chamber I assembled on the side of the clamping plate. One end of the hydraulic chamber I is slidably connected to a force receiving rod I, and the other end of the hydraulic chamber I is slidably connected to a transmission rod I.

[0007] Preferably, the force receiving rod I is located at the side position of the positioning plate and is in contact with the positioning plate.

[0008] Preferably, the transmission rod I is located at the side position of the limiting plate and is in a fixed state with the limiting plate.

[0009] Preferably, the auxiliary cleaning assembly includes a moving rod driven by an electric push rod II. A cleaning brush is fixedly connected to the outside of the moving rod. A hydraulic chamber II and a hydraulic chamber III are respectively assembled on the side of the welding table. One side of the hydraulic chamber II is slidably connected to a force receiving rod II. A connecting rod is slidably connected to the sides of the hydraulic chamber II and the hydraulic chamber III. A spring I is assembled on the side of the connecting rod. One end of the hydraulic chamber III away from the connecting rod is slidably connected to a pressing plate. The top of the cleaning brush is connected to a force receiving plate through an elastic telescopic rod II. Through the setting of the auxiliary cleaning assembly, an additional force can be applied to the cleaning brush, improving the cleaning effect of the device on welding slag.

[0010] Preferably, the force receiving rod II is located at the side position of the clamping seat and is in contact with the clamping seat.

[0011] Preferably, one end of the spring I away from the connecting rod is assembled on the inner wall of the hydraulic chamber II.

[0012] Preferably, the force receiving plate is located at the bottom position of the pressing plate and is in contact with the pressing plate.

[0013] Preferably, the auxiliary clamping assembly includes a fourth hydraulic chamber assembled on the side of the clamping plate. A hose for connection is assembled between the fourth hydraulic chamber and the third hydraulic chamber. An arc-shaped rod is slidably connected to the side of the fourth hydraulic chamber, and an auxiliary clamping plate is rotatably connected to the side of the clamping plate. Through the arrangement of the auxiliary clamping assembly, the auxiliary clamping plate can be rotated to the bottom position of the refrigerator hinge and assist in clamping at this position, further improving the stability of the device during use.

[0014] Preferably, the auxiliary clamping plate is located on the side of the arc-shaped rod and is fixed to the arc-shaped rod.

[0015] The present invention provides an automatic welding device for refrigerator hinges. It has the following beneficial effects: (1) For this automatic welding device for refrigerator hinges, place the refrigerator hinge on the welding table, start the servo motor to drive the reciprocating screw rod to rotate, so that the two clamping seats move towards each other in the horizontal direction. Cooperating with the positioning plate, the first elastic telescopic rod, the clamping plate, the first hydraulic chamber, the first stress rod, the first transmission rod, the torsion spring rod and the limiting plate, the front and rear sides of the refrigerator hinge can be clamped and positioned, reducing the possibility of deformation of the refrigerator hinge during the welding operation and making the use of the device more stable.

[0016] (2) When performing the welding operation with this automatic welding device for refrigerator hinges, start the second electric push rod to drive the moving rod and the cleaning brush to reciprocate horizontally to clean some of the welding slag that has fallen on the welding table. Cooperating with the moving rod, the cleaning brush, the second hydraulic chamber, the third hydraulic chamber, the second stress rod, the connecting rod, the first spring, the pressing plate, the second elastic telescopic rod and the stress plate, an additional force can be applied to the cleaning brush, improving the cleaning effect of the device on the welding slag.

[0017] (3) When the pressure in the third hydraulic chamber increases, the hydraulic oil in the third hydraulic chamber immediately flows into the hose, causing the hydraulic oil stored in the hose to flow into the fourth hydraulic chamber. The hydraulic oil stored in the fourth hydraulic chamber then flows towards the arc-shaped rod, driving the arc-shaped rod to move, thereby driving the auxiliary clamping plate to rotate. The auxiliary clamping plate rotates to the bottom position of the refrigerator hinge and assists in clamping at this position, further improving the stability of the device during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structure diagram of the overall appearance of the present invention; Figure 2 It is a three-dimensional sectional structure diagram of the overall of the present invention; Figure 3 It is a three-dimensional structure diagram of another perspective of the present invention; Figure 4 It is a three-dimensional structure diagram of some parts of the present invention; Figure 5 3D structural schematic diagram of some parts of the present invention; Figure 6 3D structural schematic diagram of the auxiliary cleaning component of the present invention; Figure 7 3D structural schematic diagram of some parts inside the auxiliary cleaning component of the present invention; Figure 8 3D structural schematic diagram of the auxiliary clamping component of the present invention.

[0019] In the figure: 100, welding table; 200, welding head; 300, servo motor; 400, reciprocating lead screw; 500, clamping seat; 601, positioning plate; 602, first elastic telescopic rod; 603, clamping plate; 604, first hydraulic chamber; 605, first force-bearing rod; 606, first transmission rod; 607, torsion spring rod; 608, limiting plate; 700, auxiliary cleaning component; 701, moving rod; 702, cleaning brush; 703, second hydraulic chamber; 704, third hydraulic chamber; 705, second force-bearing rod; 706, connecting rod; 707, first spring; 708, pressing plate; 709, second elastic telescopic rod; 710, force-bearing plate; 800, auxiliary clamping component; 801, fourth hydraulic chamber; 802, hose; 803, arc-shaped rod; 804, auxiliary clamping plate. Specific implementation manners

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0021] Embodiment 1, please refer to Figures 1 - 5 , a refrigerator hinge automatic welding device, including: A welding table 100, inside which a welding head 200 driven by an electric push rod one is assembled, and a clamping seat 500 is slidably connected inside the welding table 100; A servo motor 300, which is assembled on the side of the welding table 100, and the output shaft side of the servo motor 300 is fixedly connected with a reciprocating lead screw 400, and the outside of the reciprocating lead screw 400 is connected to the clamping seat 500 through a set thread; A positioning plate 601 is fixedly connected to the side of the clamping seat 500, and a clamping plate 603 is connected to the side of the positioning plate 601 through an elastic telescopic rod 601. Place the refrigerator hinge on the welding table 100, start the servo motor 300 to drive the reciprocating lead screw 400 to rotate. The two clamping seats 500 threadedly assembled on the reciprocating lead screw 400 then move towards each other horizontally, driving the positioning plate 601 assembled on the clamping seat 500 to move, so that the positioning plate 601 drives the elastic telescopic rod 602 connected thereto to move synchronously. The elastic telescopic rod 602 synchronously drives the clamping plate 603 to move, and the clamping plate 603 at the side position of the refrigerator hinge can preliminarily clamp the refrigerator hinge.

[0022] A torsion spring rod 607 is rotatably connected to the side of the clamping plate 603. A limiting plate 608 is fixedly connected to the outer side of the torsion spring rod 607. Transmission is carried out between the positioning plate 601 and the limiting plate 608 through a transmission member. The transmission member includes a hydraulic chamber 604 assembled on the side of the clamping plate 603. One end of the hydraulic chamber 604 is slidably connected to a force receiving rod 605. The force receiving rod 605 is located at the side position of the positioning plate 601 and is in contact with the positioning plate 601. After the refrigerator hinge is preliminarily clamped, when the clamping seat 500 drives the positioning plate 601 to continue moving, the clamping plate 603 cannot continue to move due to the restriction of the refrigerator hinge, so that the positioning plate 601 presses the force receiving rod 605 and drives the force receiving rod 605 to slide into the hydraulic chamber 604, increasing the pressure in the hydraulic chamber 604.

[0023] The other end of the hydraulic chamber 604 is slidably connected to a transmission rod 606. The transmission rod 606 is located at the side position of the limiting plate 608 and is fixed to the limiting plate 608. When the pressure in the hydraulic chamber 604 increases, it can drive the transmission rod 606 slidably connected to the hydraulic chamber 604 to move, so that the transmission rod 606 drives the limiting plate 608 and the torsion spring rod 607 fixedly connected thereto to rotate, to clamp and position the front and rear sides of the refrigerator hinge. Then start the first electric push rod to drive the welding head 200 driven by the first electric push rod to move downward to perform corresponding automatic welding operations on the refrigerator hinge. In this way, the possibility of deformation of the refrigerator hinge during the welding operation can be reduced, making the use of the device more stable.

[0024] After the welding operation is completed, start the servo motor 300 to drive the reciprocating lead screw 400 to rotate in the reverse direction for resetting, so that the limiting plate 608 and the torsion spring rod 607 lose the restriction, and the torsion spring rod 607 can rotate in the reverse direction under its own action for resetting. Facilitating the next use of the device.

[0025] An auxiliary cleaning component 700 for cleaning welding slag is assembled inside the welding table 100, and an auxiliary clamping component 800 for clamping the refrigerator hinge is assembled on the side of the clamping plate 603.

[0026] During use, place the refrigerator hinge on the welding table 100, start the servo motor 300, drive the reciprocating lead screw 400 to rotate. The two clamping seats 500 threadedly assembled on the reciprocating lead screw 400 then move towards each other in the horizontal direction, driving the positioning plate 601 assembled on the clamping seat 500 to move, causing the positioning plate 601 to drive the first elastic telescopic rod 602 connected thereto to move synchronously. The first elastic telescopic rod 602 synchronously drives the clamping plate 603 to move. The clamping plate 603 at the side position of the refrigerator hinge can then perform preliminary clamping on the refrigerator hinge; the clamping seat 500 drives the positioning plate 601 to continue moving. At this time, the clamping plate 603 cannot continue to move due to the restriction of the refrigerator hinge, causing the positioning plate 601 to squeeze the first force rod 605 and drive the first force rod 605 to slide into the first hydraulic chamber 604, increasing the pressure inside the first hydraulic chamber 604, driving the transmission rod 606 slidably connected to the first hydraulic chamber 604 to move, causing the transmission rod 606 to drive the limiting plate 608 and the torsion spring rod 607 fixedly connected thereto to rotate, to perform clamping and positioning on the front and rear sides of the refrigerator hinge. Subsequently, start the first electric push rod, drive the welding head 200 driven by the first electric push rod to move downward, to perform corresponding automatic welding operations on the refrigerator hinge; after the welding operation is completed, enable the servo motor 300, drive the reciprocating lead screw 400 to rotate in the reverse direction for resetting, so that the limiting plate 608 and the torsion spring rod 607 are no longer restricted, and the torsion spring rod 607 can then rotate in the reverse direction under its own action for resetting.

[0027] Example 2, please refer to Figures 1 - 7, on the basis of the first embodiment, the auxiliary cleaning component 700 includes a moving rod 701 driven by an electric push rod two. A cleaning brush 702 is fixedly connected to the outer side of the moving rod 701. A hydraulic chamber two 703 and a hydraulic chamber three 704 are respectively assembled on the side surface of the welding table 100. A force receiving rod two 705 is slidably connected to the side surface of the hydraulic chamber two 703. The force receiving rod two 705 is located at the side position of the clamping seat 500 and is in contact with the clamping seat 500. A connecting rod 706 is slidably connected to the side surfaces of the hydraulic chamber two 703 and the hydraulic chamber three 704. A first spring 707 is assembled on the side surface of the connecting rod 706. One end of the first spring 707 away from the connecting rod 706 is assembled on the inner wall of the hydraulic chamber two 703. During the welding operation, the electric push rod two is started to drive the moving rod 701 driven by the electric push rod two to reciprocate horizontally, so that the moving rod 701 drives the cleaning brush 702 fixedly connected thereto to reciprocate horizontally synchronously to clean part of the welding slag falling on the welding table 100. In the case of the welding operation, the two clamping seats 500 have completed the inward movement, so that the force receiving rod two 705 in contact with the clamping seat 500 and restricted by the clamping seat 500 loses the restriction. Cooperating with the hydraulic chamber two 703 slidably connected to the force receiving rod two 705, the connecting rod 706 slidably connected to the hydraulic chamber two 703 loses the restriction and moves into the hydraulic chamber two 703 under the action of the first spring 707.

[0028] A pressing plate 708 is slidably connected to one end of the hydraulic chamber three 704 away from the connecting rod 706. The top of the cleaning brush 702 is connected to a force receiving plate 710 through an elastic telescopic rod two 709. The force receiving plate 710 is located at the bottom position of the pressing plate 708 and is in contact with the pressing plate 708. When the connecting rod 706 moves into the hydraulic chamber two 703 under the action of the first spring 707, cooperating with the hydraulic chamber three 704 slidably connected to the connecting rod 706, the pressure in the hydraulic chamber three 704 increases, driving the pressing plate 708 slidably connected to the hydraulic chamber three 704 to move downward, so that the pressing plate 708 presses the force receiving plate 710 and applies an additional force to the cleaning brush 702 through the elastic telescopic rod two 709. The cleaning effect of the device on the welding slag is improved.

[0029] In use, on the basis of the first embodiment, when performing the welding operation, the second electric push rod is started to drive the moving rod 701 driven by the second electric push rod to reciprocate horizontally, so that the moving rod 701 drives the cleaning brush 702 fixedly connected thereto to synchronously reciprocate horizontally to clean part of the welding slag falling on the welding table 100. When performing the welding operation, the two clamping seats 500 have completed moving towards each other, so that the second stress rod 705 in contact with the clamping seat 500 and restricted by the clamping seat 500 loses the restriction. In cooperation with the second hydraulic chamber 703 slidably connected to the second stress rod 705, the connecting rod 706 slidably connected to the second hydraulic chamber 703 loses the restriction and moves into the second hydraulic chamber 703 under the action of the first spring 707. In cooperation with the third hydraulic chamber 704 slidably connected to the connecting rod 706, the pressure in the third hydraulic chamber 704 increases, driving the pressing plate 708 slidably connected to the third hydraulic chamber 704 to move downward, so that the pressing plate 708 presses the stress plate 710 and applies an additional force to the cleaning brush 702 through the second elastic telescopic rod 709.

[0030] Embodiment Three. Please refer to Figures 1 - 8 , on the basis of the first and second embodiments, the auxiliary clamping assembly 800 includes a fourth hydraulic chamber 801 assembled on the side of the clamping plate 603, and a hose 802 for connection is assembled between the fourth hydraulic chamber 801 and the third hydraulic chamber 704. When the pressure in the third hydraulic chamber 704 increases, the oil in the third hydraulic chamber 704 immediately flows into the hose 802, so that the oil stored in the hose 802 flows into the fourth hydraulic chamber 801.

[0031] An arc-shaped rod 803 is slidably connected to the side of the fourth hydraulic chamber 801, and an auxiliary clamping plate 804 is rotatably connected to the side of the clamping plate 603. The auxiliary clamping plate 804 is located on the side of the arc-shaped rod 803 and is fixed to the arc-shaped rod 803. When the oil stored in the hose 802 flows into the fourth hydraulic chamber 801, the oil stored in the fourth hydraulic chamber 801 immediately flows towards the arc-shaped rod 803, driving the arc-shaped rod 803 slidably connected to the fourth hydraulic chamber 801 to move, thereby driving the auxiliary clamping plate 804 fixedly connected to the arc-shaped rod 803 to rotate. The auxiliary clamping plate 804 rotates to the bottom position of the refrigerator hinge and performs auxiliary clamping on this position. Further improving the stability of the device during use.

[0032] In use, on the basis of the first and second embodiments, when the pressure in the third hydraulic chamber 704 increases, the hydraulic fluid in the third hydraulic chamber 704 immediately flows into the hose 802, causing the hydraulic fluid stored in the hose 802 to flow into the fourth hydraulic chamber 801. The hydraulic fluid stored in the fourth hydraulic chamber 801 then flows towards the arc-shaped rod 803, driving the movement of the arc-shaped rod 803 slidably connected to the fourth hydraulic chamber 801, thereby driving the rotation of the auxiliary clamping plate 804 fixedly connected to the arc-shaped rod 803. The auxiliary clamping plate 804 rotates to the bottom position of the refrigerator hinge and performs auxiliary clamping at this position.

[0033] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, should be covered within the protection scope of the present invention.

Claims

1. An automatic welding device for refrigerator hinges, characterized in that: include: A welding table (100), wherein a welding head (200) driven by an electric push rod is installed inside the welding table (100), and a clamping seat (500) is slidably connected inside the welding table (100); A servo motor (300), the servo motor (300) being mounted on a side surface of the welding table (100), a reciprocating screw rod (400) being fixedly connected to a side surface of an output shaft of the servo motor (300), and an outer side of the reciprocating screw rod (400) being connected to the clamping seat (500) by providing a thread; The side of the clamping seat (500) is fixedly connected to a positioning plate (601), and the side of the positioning plate (601) is connected to a clamping plate (603) by means of an elastic telescopic rod (602). The side of the clamping plate (603) is rotatably connected to a torsion spring rod (607), and the outer side of the torsion spring rod (607) is fixedly connected to a limiting plate (608). Transmission members are provided between the positioning plate (601) and the limiting plate (608), and an auxiliary cleaning component (700) for cleaning welding slag is installed inside the welding table (100), and an auxiliary clamping component (800) for clamping a refrigerator hinge is installed on the side of the clamping plate (603).

2. The automatic welding device for refrigerator hinges according to claim 1, characterized in that: The transmission member comprises a hydraulic chamber 1 (604) mounted on the side of the clamping plate (603), one end of the hydraulic chamber 1 (604) being slidably connected to a force bearing rod 1 (605), and the other end of the hydraulic chamber 1 (604) being slidably connected to a transmission rod 1 (606).

3. The automatic welding device for refrigerator hinges according to claim 2, characterized in that: The force bearing rod 1 (605) is located on the side of the positioning plate (601) and is in contact with the positioning plate (601).

4. The automatic welding device for refrigerator hinges according to claim 2, characterized in that: The transmission rod 1 (606) is located at a side position of the limiting plate (608) and is in a fixed state with the limiting plate (608).

5. The automatic welding device for refrigerator hinges according to claim 2, characterized in that: The auxiliary cleaning assembly (700) comprises a moving rod (701) driven by a second electric push rod, a cleaning brush (702) is fixedly connected to the outer side of the moving rod (701), a hydraulic chamber (703) and a hydraulic chamber (704) are respectively mounted on the sides of the welding table (100), a force-bearing rod (705) is slidably connected to the side of the second hydraulic chamber (703), a connecting rod (706) is slidably connected to the sides of the second hydraulic chamber (703) and the third hydraulic chamber (704), a spring (707) is mounted on the side of the connecting rod (706), a pressure plate (708) is slidably connected to one end of the third hydraulic chamber (704) away from the connecting rod (706), and the top of the cleaning brush (702) is connected to a force-bearing plate (710) by means of a second elastic telescopic rod (709).

6. The automatic welding device for refrigerator hinges according to claim 5, characterized in that: The second force-bearing rod (705) is located on the side of the clamping seat (500) and is in contact with the clamping seat (500).

7. The automatic welding device for refrigerator hinges according to claim 5, characterized in that: One end of the spring 1 (707) away from the connecting rod (706) is mounted on the inner wall of the hydraulic chamber 2 (703).

8. The automatic welding device for refrigerator hinges according to claim 5, characterized in that: The force-bearing plate (710) is located at the bottom of the pressing plate (708) and is in contact with the pressing plate (708).

9. The automatic welding device for refrigerator hinges according to claim 5, characterized in that: The auxiliary clamping assembly (800) includes a hydraulic chamber four (801) mounted on the side of a clamping plate (603), a hose (802) for connection is mounted between the hydraulic chamber four (801) and the hydraulic chamber three (704), an arc rod (803) is slidably connected to the side of the hydraulic chamber four (801), and an auxiliary clamping plate (804) is rotatably connected to the side of the clamping plate (603).

10. The automatic welding device for refrigerator hinges according to claim 9, characterized in that: The auxiliary clamping plate (804) is located on the side of the arc-shaped rod (803) and is in a fixed state with the arc-shaped rod (803).

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