Station switching mechanism for main splicing station of welding production line

Abstract

The utility model relates to the technical field of welding production, and discloses a station switching mechanism for a main splicing station of a welding production line, which comprises two groups of fixed plates and a guide rail, a movable frame is mounted on the guide rail in a sliding manner, the two groups of fixed plates are respectively fixed on two sides of the guide rail, and the movable frame is fixed on the guide rail. According to the station switching mechanism for the main splicing station of the welding production line, by arranging the station switching mechanism and the control part, when station switching is not needed, limitation on teeth can be controlled to be relieved only by pulling a moving rod, so that the teeth swing when making contact with a rack, and a disc cannot drive a station base to rotate; and when the station needs to be switched, the clamping rod is pulled to release the limiting of the moving rod, and the inserting rod can be controlled to be inserted into the inserting groove, so that the teeth are limited, the station can be automatically switched when the moving frame moves, and the use is convenient.

Description

Technical Field

[0001] This utility model relates to the field of welding production technology, specifically a station switching mechanism for the main assembly station of a welding production line. Background Technology

[0002] In the automobile manufacturing process, sheet metal needs to be welded. The station switching mechanism in the main assembly station of the welding production line needs to be able to rotate. In addition to being able to rotate 360°, the station also needs to be able to move within the welding production line to facilitate welding operations.

[0003] For example, the station switching mechanism for the main assembly station of a welding production line disclosed in announcement number "CN211991573U" can linearly push the base through a drive device. During the pushing process, the meshing between the rack and pinion can realize the overall movement and rotation of the station base structure. This mechanism simplifies the structure of the station base structure to realize the functions of rotation and linear movement, further saving operators the time and effort required to operate the station switching mechanism, and thus effectively improving welding efficiency.

[0004] However, in actual use, the above-mentioned device sometimes needs to adjust the position of the workstation, but does not need to adjust the position of the fixture. During the movement and adjustment of the device, the workstation must change, which makes it difficult to use in some special cases. Therefore, we propose a workstation switching mechanism for the main assembly workstation of the welding production line. Utility Model Content

[0005] The purpose of this invention is to provide a station switching mechanism for the main assembly station of a welding production line, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a station switching mechanism for the main assembly station of a welding production line, comprising a fixed plate and a guide rail, a movable frame slidably mounted on the guide rail, two sets of fixed plates being provided, the two sets of fixed plates being fixed on both sides of the guide rail respectively, and a cylinder for driving the movable frame to move left and right being fixed on the right side of the fixed plate on the left side of the guide rail, a station switching mechanism being provided on the movable frame and the fixed plate, and a control unit for controlling the station switching mechanism being provided on the movable frame;

[0007] The workstation switching mechanism includes:

[0008] A rack and pinion is used to control the rotation and switching of the workstation base when the moving frame moves;

[0009] Workstation base: The workstation base is used to connect the fixtures for clamping workpieces. By connecting multiple sets of fixtures, multi-station operation can be achieved. The workstation base rotates to achieve workstation switching.

[0010] The meshing part is used to mesh with the rack to control the rotation of the workstation base for workstation switching.

[0011] Preferably, the rack is fixed between two sets of fixed plates, the top of the movable frame is provided with an engaging part, and the workstation base is located on top of the engaging part.

[0012] Preferably, the meshing part includes a disc, which is rotatably mounted on the top of the movable frame. The workstation base is fixed on the top of the disc. A moving groove is formed on the surface of the disc, and teeth are hinged to the inner side of the moving groove. An insertion groove is formed on the side of the teeth near the center of the disc. The disc is penetrated by a rod and slidably connected to the rod. A connecting spring is fixed on the inner wall of the disc. The end of the connecting spring away from the disc is fixed to the rod. When the rod is inserted into the insertion groove, it can restrict the teeth, preventing them from swinging at the position hinged to the moving groove, thereby ensuring the teeth... The teeth can stably maintain engagement with the rack, enabling switching of workstations when the moving frame moves. When workstation switching is not required, the control unit simply stops contacting the insertion rod, and under the action of the connecting spring, the insertion rod can move away from the teeth and retract from the insertion slot. Thus, when the teeth contact the rack, they can only swing at the position hinged to the moving slot, preventing the disc from driving the workstation base to rotate and switch workstations. The insertion slot has a larger opening on the side closer to the center of the disc, ensuring that the insertion rod can be smoothly inserted into the insertion slot, thereby restricting the teeth.

[0013] Preferably, the control unit includes a moving rod that passes through and is slidably connected to the moving frame. A return spring is fixed on the inner wall of the moving frame, and the end of the return spring away from the moving frame is fixed to the moving rod. A groove is formed at the top of the moving rod. A slide rod passes through and is slidably connected to the disc. A tension spring is fixed at the top of the slide rod, and the end of the tension spring away from the slide rod is fixed to the inner wall of the disc. A protrusion is fixed on the surface of the slide rod. A slot is formed at the bottom of the moving rod. A locking rod is slidably mounted on the surface of the moving frame, and a support spring is fixed at the bottom of the locking rod. The end of the support spring away from the locking rod is fixed to the moving frame. When it is not necessary to switch work positions, simply pull the moving rod to move it away from the disc, and the groove at the top of the moving rod moves to the position of the slide rod. When the moving rod no longer contacts the sliding rod, the sliding rod can move downwards under the action of the tension spring. The sliding rod drives the protrusion downwards as well, and the protrusion no longer contacts the insertion rod. Under the action of the connecting spring, the insertion rod moves away from the teeth. When the slot at the bottom of the moving rod moves to the position of the locking rod, the locking rod can move upwards under the action of the support spring and insert into the slot to limit the moving rod and ensure its stability. When it is necessary to switch positions, simply pull the locking rod downwards to remove it from the slot and release the limitation on the moving rod. The moving rod can then reset under the action of the return spring. The moving rod contacts the sliding rod and pushes the sliding rod upwards. The sliding rod moves upwards with the protrusion, and the protrusion contacts the insertion rod, pushing the insertion rod into the insertion slot, thereby limiting the teeth and allowing the moving frame to move to the desired position, which can control the rotation of the disc.

[0014] Compared with the prior art, this utility model provides a station switching mechanism for the main assembly station of a welding production line, which has the following beneficial effects:

[0015] 1. This station switching mechanism for the main assembly station of a welding production line, through its station switching mechanism and control unit, allows for easy switching of stations. When station switching is not required, simply pulling the moving rod releases the restriction on the teeth, causing them to swing when in contact with the rack, preventing the disc from rotating the station base and stopping the station switching. When station switching is required, simply pulling the locking lever releases the restriction on the moving rod, allowing the insertion rod to be inserted into the insertion slot, thus restricting the teeth. This enables the moving frame to automatically switch stations during movement, making it convenient to use.

[0016] 2. This station switching mechanism for the main assembly station of the welding production line, when the moving rod is pulled to stop the station switching, the slot at the bottom of the moving rod moves to the position of the locking rod. Under the action of the support spring, the locking rod can move upward and insert into the slot to limit the moving rod, ensuring the stability of the moving rod, without the need for the operator to hold the moving rod continuously. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall front view of the present invention;

[0018] Figure 2 This is a schematic diagram of the connection structure of the mobile frame, control unit, and engagement unit of this utility model;

[0019] Figure 3 This is a side view of the cross-sectional structure of the connecting section of the mobile frame, control unit, and engagement unit of this utility model;

[0020] Figure 4 This is a schematic cross-sectional view of the connection between the meshing part and the control part of this utility model;

[0021] Figure 5 This is a top view of the cross-sectional structure of the disk and a set of teeth and insert rods of this utility model.

[0022] In the diagram: 1. Fixed plate; 2. Guide rail; 3. Station switching mechanism; 31. Rack; 32. Station base; 33. Engaging part; 331. Disc; 332. Moving groove; 333. Tooth; 334. Insertion groove; 335. Insertion rod; 336. Connecting spring; 4. Control part; 41. Moving rod; 42. Return spring; 43. Groove; 44. Slide rod; 45. Tension spring; 46. Protrusion; 47. Slot; 48. Locking rod; 49. Support spring; 5. Moving frame; 6. Cylinder. Detailed Implementation

[0023] like Figures 1-5 As shown, this utility model provides a technical solution: a station switching mechanism for the main assembly station of a welding production line, including a fixed plate 1 and a guide rail 2. A movable frame 5 is slidably installed on the guide rail 2. Two sets of fixed plates 1 are provided, and the two sets of fixed plates 1 are respectively fixed on both sides of the guide rail 2. A cylinder 6 for driving the movable frame 5 to move left and right is fixed on the right side of the fixed plate 1 on the left side of the guide rail 2. A station switching mechanism 3 is provided on the movable frame 5 and the fixed plate 1. A control part 4 for controlling the station switching mechanism 3 is provided on the movable frame 5. The station switching mechanism 3 includes a rack 31, a station base 32, and a meshing part 33.

[0024] The rack 31 is fixed between two sets of fixed plates 1. The top of the movable frame 5 is provided with a meshing part 33. The workstation base 32 is located on the top of the meshing part 33. By connecting multiple sets of clamps on the workstation base 32, multi-station operation can be realized. The workstation can be switched by rotating the workstation base 32.

[0025] The meshing part 33 includes a disc 331, which is rotatably mounted on the top of the movable frame 5. The workstation base 32 is fixed on the top of the disc 331. A moving groove 332 is formed on the surface of the disc 331. A tooth 333 is hinged to the inner side of the moving groove 332. An insertion groove 334 is formed on the side of the tooth 333 near the center of the disc 331. The disc 331 is penetrated by a rod 335 and is slidably connected to the rod 335. A connecting spring 336 is fixed on the inner wall of the disc 331. The end of the connecting spring 336 away from the disc 331 is fixed to the rod 335. When the rod 335 is inserted into the insertion groove 334, it can restrict the tooth 333, so that the tooth 333 cannot swing in the position hinged to the moving groove 332, thereby ensuring that the tooth 333... 33 can stably maintain engagement with rack 31, enabling switching of workstations when the moving frame 5 moves. When workstation switching is not required, simply by controlling unit 4 to stop contacting insert rod 335, insert rod 335 can move away from tooth 333 under the action of connecting spring 336, and insert rod 335 exits from insertion slot 334. Thus, when tooth 333 contacts rack 31, tooth 333 can only swing at the position hinged to moving slot 332, and cannot control disk 331 to drive workstation base 32 to rotate for workstation switching. The side of insertion slot 334 closest to the center of disk 331 has a large opening, which can ensure that insert rod 335 can be smoothly inserted into insertion slot 334, thereby restricting tooth 333.

[0026] The control unit 4 includes a moving rod 41, which passes through and is slidably connected to the moving frame 5. A return spring 42 is fixed on the inner wall of the moving frame 5, and the end of the return spring 42 away from the moving frame 5 is fixed to the moving rod 41. A groove 43 is provided at the top of the moving rod 41. A slide rod 44 passes through and is slidably connected to the disc 331. A tension spring 45 is fixed at the top of the slide rod 44, and the end of the tension spring 45 away from the slide rod 44 is fixed to the inner wall of the disc 331. The surface of the moving rod 41 is fixed with a protrusion 46, and the bottom of the moving rod 41 is provided with a slot 47. The surface of the moving frame 5 is slidably mounted with a locking rod 48, and the bottom of the locking rod 48 is fixed with a support spring 49. The end of the support spring 49 away from the locking rod 48 is fixed to the moving frame 5. When it is not necessary to switch positions, simply pull the moving rod 41 to move it away from the disc 331. The groove 43 at the top of the moving rod 41 moves to the position of the sliding rod 44, and the moving rod 41 no longer resists the sliding rod 44. The sliding rod 44 can then be pulled... Under the action of the extension spring 45, the slide rod 44 moves downward, causing the protrusion 46 to move downward as well. The protrusion 46 then no longer opposes the insertion rod 335. Under the action of the connecting spring 336, the insertion rod 335 moves away from the teeth 333. When the slot 47 at the bottom of the moving rod 41 moves to the position of the locking rod 48, the locking rod 48 moves upward under the action of the support spring 49 and inserts into the slot 47, limiting the movement of the moving rod 41 and ensuring its stability. This is necessary when switching work positions. Simply pull the lever 48 downwards to remove it from the slot 47 and release the restriction on the moving rod 41. The moving rod 41 will then be reset by the return spring 42. The moving rod 41 will then contact the slide rod 44 and push it upwards. The slide rod 44 will move upwards with the protrusion 46, which will contact the insertion rod 335 and push it into the insertion slot 334, thereby restricting the teeth 333 and allowing the moving frame 5 to move to a position that can control the rotation of the disc 331.

[0027] First, connect the fixed plate 1 to the end face of the operating platform. Then, connect the fixture for clamping the workpiece to the workstation base 32. Start the cylinder 6 to control the moving frame 5 to move left or right. Through the meshing of the teeth 333 and the rack 31, the disc 331 rotates, thereby controlling the rotation of the workstation base 32 to achieve workstation switching.

[0028] When station switching is not required, simply pull the moving rod 41 to move it away from the disc 331. The groove 43 at the top of the moving rod 41 moves to the position of the sliding rod 44. The moving rod 41 no longer resists the sliding rod 44, and the sliding rod 44 can move downward under the action of the tension spring 45. The sliding rod 44 drives the protrusion 46 to move downward together, and the protrusion 46 no longer resists the insertion rod 335. The insertion rod 335 moves away from the tooth 333 under the action of the connecting spring 336. The insertion rod 335 exits from the insertion slot 334. Thus, when the tooth 333 contacts the rack 31, the tooth 333 can only swing at the position hinged to the moving slot 332, and therefore cannot control the disc 331 to drive the station base 32 to rotate for station switching. This makes it convenient to use.

[0029] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A station switching mechanism for a main assembly station of a welding production line, comprising a fixed plate (1) and a guide rail (2), a moving frame (5) being slidably installed on the guide rail (2), the fixed plate (1) being provided in two groups, the two groups of fixed plates (1) being respectively fixed on the left and right sides of the guide rail (2), a cylinder (6) for driving the moving frame (5) to move left and right being fixed on the right side of the fixed plate (1) located on the left side of the guide rail (2), characterized in that: The mobile frame (5) and the fixed plate (1) are provided with a station switching mechanism (3), and the mobile frame (5) is provided with a control part (4) for controlling the station switching mechanism (3); The station switching mechanism (3) comprises: A rack (31) for controlling the rotation of a station base (32) when the mobile frame (5) moves; The station base (32) is used for connecting a clamp for clamping a workpiece; The engagement part (33) is used for engaging with the rack (31) to control the rotation of the station base (32) to switch the station.

2. The station switching mechanism for the main assembly station of the welding production line according to claim 1, characterized in that: The rack (31) is fixed between the two groups of fixed plates (1), and the top of the mobile frame (5) is provided with an engagement part (33), and the station base (32) is arranged on the top of the engagement part (33).

3. The station switching mechanism for the main assembly station of the welding production line according to claim 1, characterized in that: The engagement part (33) comprises a disc (331) rotatably installed on the top of the mobile frame (5), and the station base (32) is fixed on the top of the disc (331), and the surface of the disc (331) is provided with a moving groove (332), and the inner side of the moving groove (332) is hinged with a tooth (333).

4. The station switching mechanism for the main assembly station of the welding production line according to claim 3, characterized in that: The tooth (333) is provided with an insertion groove (334) near one side of the center of the disc (331), the disc (331) is penetrated by an insertion rod (335) and is in sliding connection with the insertion rod (335), a connecting spring (336) is fixed on the inner wall of the disc (331), and one end of the connecting spring (336) away from the disc (331) is fixed with the insertion rod (335).

5. The station switching mechanism for the main assembly station of the welding production line according to claim 3, characterized in that: The control part (4) comprises a moving rod (41) penetrating through the mobile frame (5) and in sliding connection with the mobile frame (5), a reset spring (42) is fixed on the inner wall of the mobile frame (5), one end of the reset spring (42) away from the mobile frame (5) is fixed with the moving rod (41), a recess (43) is formed in the top of the moving rod (41), and the disc (331) is penetrated by a sliding rod (44) and in sliding connection with the sliding rod (44).

6. The station switching mechanism for the main assembly station of the welding production line according to claim 5, characterized in that: The top of the sliding rod (44) is fixed with a stretching spring (45), one end of the stretching spring (45) away from the sliding rod (44) is fixed on the inner wall of the disc (331), the surface of the sliding rod (44) is fixed with a protruding block (46), the bottom of the moving rod (41) is provided with a clamping groove (47), the surface of the mobile frame (5) is slidably installed with a clamping rod (48), the bottom of the clamping rod (48) is fixed with a supporting spring (49), and one end of the supporting spring (49) away from the clamping rod (48) is fixed with the mobile frame (5).

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