Assembling and welding device for automatic production line based on elevator door plate

Abstract

The invention provides an assembling and welding device based on an elevator door plate automatic production line, and relates to the field of elevator door machining equipment. Comprising a base, a conveying belt, a support, three grabbing mechanisms and a lifting part, the conveying belt is installed on the base, the support is installed on the base, the lifting part is installed on the support, the grabbing mechanisms are installed on the lifting part, and the three grabbing mechanisms can be driven by the lifting part to ascend and descend; and the lifting part comprises a mounting seat, a first guide rod, a driving plate, two first guide grooves, a second guide groove, a connecting plate, a first electric push rod and three driving rods. Longitudinal beam frames and transverse beam frames can be grabbed and clamped at the same time, and automatic and simultaneous placement of the three beam frames is achieved; the longitudinal beam frame grabbing mechanism can be lifted preferentially, and the rest beam frames and grabbing mechanisms can still provide good positioning during welding; in addition, the position of the beam frame profile can automatically correspond to the grabbing mechanism, the cost is saved, and the equipment precision is guaranteed.

Description

Technical Field

[0001] The invention relates to the field of elevator door processing equipment, and in particular to an assembly welding device based on an automated production line for elevator door panels. Background Art

[0002] Elevator door panels are an important part of elevators. They not only need to have a certain strength and rigidity to ensure the safe operation of the elevator, but also need to have good flatness and appearance quality to meet the requirements of building aesthetics and passenger experience. Elevator door panels are usually made of metal materials, such as stainless steel or carbon steel; Fig.16 Shown is a schematic diagram of an existing elevator door, which consists of a panel and three beams.

[0003] At present, when making elevator door panels, the panel needs to be laid flat, and then the standard beam profiles are placed on the panel in turn to ensure that the three beam profiles are arranged in an I-shape, and then the beam is welded to the panel using spot welding equipment.

[0004] The elevator door panel assembly welding device currently used usually places and welds the longitudinal beam frame first, and then places and welds the two transverse beam frames to avoid interference or shaking and misalignment during the welding process; this method takes a long time to operate, which is not conducive to improving the work efficiency of the entire production line.

[0005] Based on this, the present invention is proposed. Summary of the invention

[0006] According to an embodiment of the present invention, an assembly welding device for an elevator door panel automated production line is provided to solve the problem of long operation time and low efficiency of existing traditional equipment.

[0007] In a first aspect of the present invention, an assembly welding device for an automated production line of elevator door panels is provided.

[0008] The assembly welding device for elevator door panel automatic production line comprises: a base, a conveyor belt, a bracket, three grabbing mechanisms and a lifting part, wherein the conveyor belt is installed on the base, the bracket is installed on the base, the lifting part is installed on the bracket, the grabbing mechanism is installed on the lifting part, and the three grabbing mechanisms can be lifted and lowered under the driving of the lifting part;

[0009] The lifting part comprises a mounting seat, a first guide rod, a driving plate, two first guide grooves, a second guide groove, a connecting plate, a first electric push rod and three driving rods, the first guide rod is mounted on the mounting seat, the driving plate is slidably mounted on the first guide rod, the two first guide grooves and the second guide grooves are both provided on the driving plate, and the second guide groove is located between the two first guide grooves, one end of the three driving rods are respectively mounted in the two first guide grooves and the second guide groove, and the other ends of the three driving rods are respectively connected to the three grabbing mechanisms; the connecting plate is mounted on the driving plate, the first electric push rod is mounted on a side of the mounting seat close to the connecting plate, and the output end of the first electric push rod is connected to the connecting plate;

[0010] It also includes a welding robot, which is installed on the outside of the base and at a position corresponding to the conveyor belt.

[0011] Preferably, the first guide groove comprises a first translation section, a first descending section, a stabilizing section, a first returning section, a resetting section and a second returning section which are connected in sequence;

[0012] The second guide groove includes a second translation section, a second descending section and a third translation section which are connected in sequence.

[0013] Preferably, the grasping mechanism includes a fixed seat, a movable seat, two connecting rods, a clamping claw, a fixed plate, a first slide groove, a first slider, a second electric push rod, a lifting plate and a second slide groove, the fixed seat is installed on the lower surface of the mounting seat, the fixed seat is a hollow structure with an open bottom, the movable seat is installed in the fixed seat, and the other end of the driving rod is connected to the movable seat; the two connecting rods are installed on the movable seat and are symmetrically arranged relative to the movable seat; the number of the clamping claws is four, and every two of the clamping claws form a group and are rotatably installed on the connecting rod; the fixed plate is installed on the connecting rod, the number of the first slide grooves is two, and the two first slide grooves are respectively opened on the fixed plate, the first slider is slidably installed in the first slide groove, and the first slider is connected to the clamping claw; the second electric push rod is installed on the movable seat, the lifting plate is installed on the output end of the second electric push rod, the second slide groove is opened on the lifting plate, and the side of the first slider away from the clamping claw is installed in the second slide groove.

[0014] Preferably, two guide plates are symmetrically installed on the conveyor belt.

[0015] Preferably, a guide column is installed on the base, and a stacking plate is slidably installed on the guide column;

[0016] A translation mechanism is installed between the bracket and the lifting part, and the translation mechanism can drive the lifting part to move from above the conveyor belt to above the stacking plate.

[0017] Preferably, the translation mechanism includes a lead screw, a positioning rod, a screw block, a connecting block and a motor, the lead screw is installed on the bracket, the screw block is threadedly connected to the lead screw, and the lower surface of the screw block is connected to the mounting seat; the positioning rod is installed on the bracket, the connecting block is slidably connected to the positioning rod, and the lower surface of the connecting block is connected to the mounting seat; the motor is installed on the bracket, and the output end of the motor is connected to one end of the lead screw.

[0018] Preferably, a lifting mechanism is installed between the base and the stacking plate;

[0019] The lifting mechanism includes a second guide rod, a movable frame, a rotating rod, a first lever, a turntable and a second lever, the second guide rod is installed on the base, the movable frame is slidably installed on the second guide rod, and both ends of the rotating rod are rotatably installed on the lower surface of the stacking plate and the upper surface of the movable frame respectively; the number of the first levers is several, which are equidistantly installed on the movable frame; the turntable is rotatably installed on the bracket, the number of the second levers is several, which are equidistantly installed on the turntable along the circumferential direction, and the second levers correspond to the first levers in position.

[0020] Preferably, a linkage mechanism is also installed on the bracket;

[0021] The linkage mechanism includes a mounting frame, a ratchet, a first bevel gear, a second bevel gear, a connecting rod, a pull rod, a first clamping block, a mounting block, a first leaf spring, a limiting rod, a second clamping block, a second leaf spring, a slideway, a slider and a spring. The mounting frame is mounted on the bracket, the ratchet is rotatably mounted on the mounting frame, the first bevel gear is connected to the ratchet, the second bevel gear is connected to the rotating disk through the connecting rod, and the second bevel gear is meshed with the first bevel gear;

[0022] The slideway is provided on the mounting frame, the slider is slidably mounted in the slideway, and two ends of the spring are respectively connected to the slider and the inner wall of the slideway;

[0023] The pull rod is connected to the slider, the first clamping block is rotatably mounted on the pull rod, the mounting block is mounted on the pull rod, and the first leaf spring is mounted between the first clamping block and the mounting block; the limit rod is mounted on the pull rod; the second clamping block is rotatably mounted on the mounting frame, and the second leaf spring is mounted between the mounting frame and the second clamping block.

[0024] In a second aspect of the present invention, a method of using an assembly welding device is provided.

[0025] The steps include:

[0026] The conveyor belt transports the elevator door panel, and the guide plate is used to limit the panel. After the panel is transported to the specified position, the conveyor belt is stopped;

[0027] Turn on the motor, and use the rotation of the lead screw to drive the mounting plate to move to the top of the stacking plate;

[0028] The movement of the mounting plate drives the pull rod to rotate, and then the first block drives the ratchet to rotate, so that the first bevel gear drives the second bevel gear to rotate, and the turntable drives the second lever to rotate, and finally the mobile frame is moved by shifting the first lever, and the stacking plate is driven to rise by the rotating rod. At this time, the top beam frame is aligned with the grabbing mechanism.

[0029] Preferably, the method further comprises the following steps:

[0030] The first electric push rod is turned on to drive the driving plate to move, and the driving rod, the first guide groove and the second guide groove are used to drive the grabbing mechanism to descend and align with the beam frame at the top;

[0031] Turn on the second electric push rod to make the clamping claws clamp the profile;

[0032] The output end of the first electric push rod retracts, causing the three grabbing mechanisms to rise one after another, and then the motor starts in the reverse direction to return the mounting seat to the top of the conveyor belt;

[0033] The first electric push rod is turned on to lower the grabbing mechanism, and then the grabbing mechanism in the middle releases the beam frame, and the output end of the first electric push rod is retracted. When the grabbing mechanism in the middle is lifted and the heights of the grabbing mechanisms on both sides remain unchanged, the output end of the first electric push rod is locked, and spot welding is performed using a welding robot;

[0034] Then the grabbing mechanisms on both sides release the beam frame, the output end of the first electric push rod continues to retract, all the grabbing mechanisms are lifted, and spot welding continues using the welding robot.

[0035] One or more technical solutions provided in this application have at least the following technical effects or advantages:

[0036] 1. The assembly welding device for the elevator door panel automated production line provided by the present invention can simultaneously grasp and clamp the longitudinal beam and the transverse beam through three grasping mechanisms, thereby ensuring that the three beams can be automatically and simultaneously placed without separate operations.

[0037] 2. The lifting part in the present invention can realize the lifting and lowering of three grabbing mechanisms through the same driving source, ensuring that the three beams can be placed on the panel at the same time, and at the same time, the grabbing mechanism for grabbing the horizontal beam can be raised first, ensuring that when welding the beam, the longitudinal beam and the grabbing mechanism can still provide good positioning energy to avoid shaking.

[0038] 3. The present invention can make the grabbing mechanism align with the stacking plate through the translation mechanism, which is convenient for continuous material taking and improves the continuous working ability of the equipment. At the same time, the lifting mechanism can realize the automatic and equidistant rising of the stacked profiles, ensuring that the position of the beam profile at the top is always corresponding to the grabbing mechanism, so as to ensure the precise work.

[0039] 4. The present invention can use the connecting mechanism to enable the grasping mechanism and the upper lifting part to automatically drive the lifting mechanism to work during the translation process without the need for additional power input, which not only saves equipment costs but also ensures the accuracy of the equipment through mechanical drive.

[0040] 5. The present invention, through the function of the guide plate, can automatically center the panel conveyed by the conveyor belt, ensure accurate alignment with the beam frame grasped by the grasping mechanism, and ensure the normal progress of subsequent work.

[0041] In summary, the present invention can simultaneously grasp and clamp the longitudinal beam and the transverse beam, so that the three beams can be placed automatically and simultaneously without separate operation; it can also enable the longitudinal beam grasping mechanism to be raised first, so that the remaining beams and grasping mechanism can still provide good positioning during welding to avoid shaking; in addition, the position of the beam profile can be automatically matched with the grasping mechanism, ensuring accurate work, saving costs and ensuring equipment accuracy.

[0042] It should be understood that the contents described in the summary of the invention are not intended to limit the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The above and other features, advantages and aspects of the embodiments of the present invention will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings. In the accompanying drawings, the same or similar reference numerals represent the same or similar elements, wherein:

[0044] Figure 1 A schematic structural diagram of an assembly welding device for an automated production line of elevator door panels according to an embodiment of the present invention is shown;

[0045] Figure 2 A schematic diagram of an exploded structure of an assembly welding device for an automated production line of elevator door panels according to an embodiment of the present invention is shown;

[0046] Figure 3 A schematic structural diagram of a conveyor belt based on an assembly welding device for an automated production line of elevator door panels according to an embodiment of the present invention is shown;

[0047] Figure 4 A schematic structural diagram of a driving board based on an assembly welding device for an automated production line of elevator door panels according to an embodiment of the present invention is shown;

[0048] Figure 5 A front view of a first guide groove of an assembly welding device for an automated production line of elevator door panels according to an embodiment of the present invention is shown;

[0049] Figure 6 A front view of a second guide groove of an assembly welding device for an automated production line of elevator door panels according to an embodiment of the present invention is shown;

[0050] Figure 7 A bird's-eye view of a grabbing mechanism based on an assembly welding device for an automated production line for elevator door panels according to an embodiment of the present invention is shown;

[0051] Figure 8 A schematic diagram of an exploded structure of a grabbing mechanism based on an assembly welding device for an automated production line of elevator door panels according to an embodiment of the present invention is shown;

[0052] Fig. 9 A schematic structural diagram of a grabbing mechanism of an assembly welding device for an automated production line of elevator door panels according to an embodiment of the present invention is shown;

[0053] Fig.10 A schematic diagram of the rear structure of an assembly welding device for an automated production line of elevator door panels according to an embodiment of the present invention is shown;

[0054] Fig.11 A schematic diagram of a rear exploded structure of an assembly welding device for an automated production line of elevator door panels according to an embodiment of the present invention is shown;

[0055] Fig.12 A schematic structural diagram of a mobile frame of an assembly welding device for an automated production line of elevator door panels according to an embodiment of the present invention is shown;

[0056] Fig.13 A schematic diagram showing the connection state of a turntable and a second bevel gear of an assembly welding device for an automated production line of elevator door panels according to an embodiment of the present invention is shown;

[0057] Fig.14 A schematic structural diagram of a ratchet wheel based on an assembly welding device for an automated production line of elevator door panels according to an embodiment of the present invention is shown;

[0058] Fig.15A schematic structural diagram of a mounting frame based on an assembly welding device for an automated production line of elevator door panels according to an embodiment of the present invention is shown;

[0059] Fig.16 A schematic diagram of an existing elevator door panel according to the present invention is shown.

[0060] The reference numerals are as follows:

[0061] 1. base, 2. conveyor belt, 21. guide plate, 3. bracket, 4. grabbing mechanism, 41. fixed seat, 42. movable seat, 43. connecting rod, 44. clamping claw, 45. fixed plate, 46. first slide groove, 47. first slider, 48. second electric push rod, 49. lifting plate, 410. second slide groove, 5. lifting part, 51. mounting seat, 52. first guide rod, 53. driving plate, 54. first guide groove, 541. first translation section, 542. first descending section, 543. stabilizing section, 544. first return section, 545. reset section, 546. second return section, 55. second guide groove, 551. second translation section, 552. second descending section, 553. third translation section, 56. connecting plate, 57. first electric push rod, 58. Driving rod, 6, guide column, 7, stacking plate, 71, beam frame slot, 8, translation mechanism, 81, screw, 82, positioning rod, 83, screw block, 84, connecting block, 85, motor, 9, lifting mechanism, 91, second guide rod, 92, moving frame, 93, rotating rod, 94, first lever, 95, turntable, 96, second lever, 10, linkage mechanism, 101, mounting frame, 102, ratchet, 103, first bevel gear, 104, second bevel gear, 105, connecting rod, 106, pull rod, 107, first clamping block, 108, mounting block, 109, first leaf spring, 1010, limiting rod, 1011, second clamping block, 1012, second leaf spring, 1013, slideway, 1014, slider, 1015, spring, 100, welding robot. DETAILED DESCRIPTION

[0062] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0063] In addition, the term "and / or" in this article is only a description of the association relationship between the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0064] like Figure 1 , Figure 2 and Figure 3 As shown, the assembly welding device based on the automated production line of elevator door panels includes: a base 1, a conveyor belt 2, a bracket 3, three grabbing mechanisms 4, a lifting part 5 and a welding robot 100. The conveyor belt 2 is installed on the base 1. When in use, the elevator door panel is placed on the top of the conveyor belt 2 and can be transported to a designated position. In addition, two guide plates 21 are symmetrically installed on the conveyor belt 2. The limit of the two guide plates 21 can automatically center the elevator door panel during transportation, and it is blocked after being transported to a specific position to ensure that the panel position is fixed. The welding robot 100 is installed on the outside of the base 1, and its position corresponds to the conveyor belt 2. The welding robot 100 is a FANUC ARC Mate 100i D model welding robot. The device can adjust the position of the welding gun according to demand, so as to realize the welding of the elevator door material placed on the top of the conveyor belt 2. The bracket 3 is installed on the base 1, the lifting part 5 is installed on the bracket 3, and the grabbing mechanism 4 is installed on the lifting part 5. The three grabbing mechanisms 4 can be lifted and lowered under the drive of the lifting part 5.

[0065] refer to Figure 2 , Figures 4 to 6 , the lifting part 5 is introduced. The lifting part 5 includes a mounting seat 51, a first guide rod 52, a driving plate 53, two first guide grooves 54, a second guide groove 55, a connecting plate 56, a first electric push rod 57 and three driving rods 58. The first guide rod 52 is mounted on the mounting seat 51, and the driving plate 53 is slidably mounted on the first guide rod 52, wherein the number of the first guide rods 52 is four and each two form a group, there are two driving plates 53 and the two driving plates 53 are symmetrically arranged, and the two driving plates 53 are respectively mounted on two groups of first guide rods 52. By using the limit of the two first guide rods 52 in each group, the stability of the driving plate 53 when axially sliding along the first guide rod 52 can be ensured.

[0066] The two first guide grooves 54 and the second guide groove 55 are both formed on the driving plate 53, and the second guide groove 55 is located between the two first guide grooves 54. One end of the three driving rods 58 is respectively installed in the two first guide grooves 54 and the second guide groove 55, and the other ends of the three driving rods 58 are respectively connected to the three grabbing mechanisms 4. There is a height difference between the highest point and the lowest point of the first guide groove 54 and the second guide groove 55. When the driving rod 58 is relatively displaced with the first guide groove 54 and the second guide groove 55, the vertical height of the driving rod 58 will change, thereby changing the height of the grabbing mechanism 4. The first guide groove 54 includes a first translation section 541, a first descending section 542, a stabilizing section 543, a first return section 544, a reset section 545, and a second return section 546, which are connected in sequence; the second guide groove 55 includes a second translation section 551, a second descending section 552, and a third translation section 553, which are connected in sequence.

[0067] The connecting plate 56 is installed on the driving plate 53, and the first electric push rod 57 is installed on the side of the mounting base 51 close to the connecting plate 56, and the output end of the first electric push rod 57 is connected to the connecting plate 56. Turning on the first electric push rod 57 can drive the connecting plate 56 to push the two driving plates 53 to move together. The first electric push rod 57 in this embodiment is a EB3200-100 model, and its output end can be locked in any position. By driving the movement of the driving plate 53, a relative displacement can occur between the driving rod 58 and the first guide groove 54 and the second guide groove 55.

[0068] refer to Figure 7 , Figure 8 and Fig. 9, the grasping mechanism 4 is introduced. The grasping mechanism 4 includes a fixed seat 41, a movable seat 42, two connecting rods 43, clamping jaws 44, a fixing plate 45, a first chute 46, a first slider 47, a second electric push rod 48, a lifting plate 49, and a second chute 410. The fixed seat 41 is installed on the lower surface of the mounting seat 51. The fixed seat 41 is a hollow structure with an open bottom. The movable seat 42 is installed in the fixed seat 41. The shape of the movable seat 42 is prism-shaped and adapted to the inner cavity shape of the fixed seat 41, ensuring that the movable seat 42 can only move in the vertical direction relative to the fixed seat 41 and will not rotate relatively. The other end of the driving rod 58 is connected to the movable seat 42. When the driving plate 53 moves, the driving rod 58 will slide in the first guiding groove 54 and the second guiding groove 55, thereby driving the movable seat 42 to displace in the vertical direction. Two connecting rods 43 are installed on the movable seat 42 and are symmetrically arranged relative to the movable seat 42. The number of clamping jaws 44 is four, and every two clamping jaws 44 form a group and are rotatably installed on the connecting rod 43. The bottoms of the two clamping jaws 44 in each group approach each other to achieve the clamping action. The fixing plate 45 is installed on the connecting rod 43. The number of the first chutes 46 is two, and the two first chutes 46 are respectively opened on the fixing plate 45. The first slider 47 is slidably installed in the first chute 46 and is connected to the clamping jaw 44. The first chute 46 is arc-shaped, and the center of the arc is collinear with the axis of the connecting rod 43, ensuring that when the clamping jaw 44 rotates, the first slider 47 can stably slide in the first chute 46 to avoid interference. The second electric push rod 48 is installed on the movable seat 42. The lifting plate 49 is installed at the output end of the second electric push rod 48. The lifting plate 49 is U-shaped. The second chute 410 is opened on the side wall in the vertical direction of the lifting plate 49, and the side of the first slider 47 away from the clamping jaw 44 is installed in the second chute 410. When the lifting plate 49 moves up and down, the second chute 410 and the first chute 46 cooperate to stably control the opening and closing of the clamping jaws 44.

[0069] In this embodiment, among the three grasping mechanisms 4, the grasping mechanism 4 in the middle corresponds to the second guiding groove 55. The connecting rod 43 therein is perpendicular to the connecting rods 43 of the other two grasping mechanisms 4, and the three are arranged in an I-shape. Thereby ensuring that the grasping mechanism 4 in the middle can grasp the longitudinal beam used for the elevator door, while the other two grasping mechanisms 4 can grasp the transverse beam.

[0070] The specific working principle of the scheme in this embodiment is as follows: the second electric push rod 48 is turned on to drive the lifting plate 49 to descend, and the first slider 47 drives the clamping claw 44 to rotate by using the cooperation of the second slide groove 410 and the first slide groove 46. At this time, the bottom ends of the two clamping claws 44 are close to each other to clamp the beam frame. The first electric push rod 57 is turned on to drive the connecting plate 56 and the two driving plates 53 to move axially along the first guide rod 52. At this time, the driving rods 58 connected to the three grabbing mechanisms 4 slide in the first guide groove 54 and the second guide groove 55 respectively. The driving rods 58 connected to the grabbing mechanisms 4 on both sides slide into the stable section 543 through the first translation section 541 and the first descending section 542 to complete the descent of the grabbing mechanisms 4 on both sides. At the same time, the driving rod 58 connected to the grabbing mechanism 4 in the middle passes through the second translation section 551 and the second descending section 552 to enter the third translation section 553 to complete the descent of the grabbing mechanism 4. At this time, the clamped longitudinal beam frame and the transverse beam frame are placed on the panel on the conveyor belt 2 at the same time. Then, the second electric push rods 48 in the grabbing mechanisms 4 on both sides drive the lifting plate 49 to rise, so that the clamping claws 44 are reset, thereby releasing the clamped beam. Then, the output end of the first electric push rod 57 is recovered, and the driving rod 58 in the stable section 543 enters the reset section 545 via the first return section 544. At this time, the driving rod 58 in the third translation section 553 only moves in the horizontal direction, and the height does not change, thereby ensuring that the grabbing mechanisms 4 on both sides rise, and the welding robot 100 can be used for welding. Then, the grabbing mechanism 4 in the middle releases the beam, and the output end of the first electric push rod 57 continues to be recovered, and the driving rod 58 in the third translation section 553 returns to the second translation section 551 along the second descending section 552, and welding can continue.

[0071] The solution of this embodiment can realize the simultaneous placement of the longitudinal beam frame and the transverse beam frame, and can also ensure the continuous grasping and positioning work of the longitudinal beam frame when welding the transverse beam frame, providing continuous positioning capability for the beam frame and avoiding sliding when welding the transverse beam frame, which not only improves work efficiency but also has high stability through mechanical structure control.

[0072] In order to improve the ability of the equipment to work continuously, the following solutions are proposed: Figure 3 As shown, a guide column 6 is installed on the base 1, and a stacking plate 7 is slidably installed on the guide column 6. The stacking plate 7 is limited by the guide column 6 and can only move in the up and down directions. Three groups of beam frame grooves 71 are installed on the stacking plate 7. The three groups of beam frame grooves 71 are used to stack the longitudinal beam frames and the transverse beam frames respectively. The stacked longitudinal beam frames and the transverse beam frames are arranged in an I-shaped shape, which is the same as their placement position on the panel. The beam frame grooves 71 are staggered with the grabbing mechanism 4 to prevent interference.

[0073] A translation mechanism 8 is installed between the bracket 3 and the lifting part 5. The translation mechanism 8 can drive the lifting part 5 to move from above the conveyor belt 2 to above the stacking plate 7. The grabbing mechanism 4 can transfer the longitudinal beam and the transverse beam located at the top from the stacking plate 7 to the conveyor belt 2.

[0074] Combination Figure 2 and Fig.10 , the translation mechanism 8 is introduced. The translation mechanism 8 includes a lead screw 81, a positioning rod 82, a screw block 83, a connecting block 84 and a motor 85. The lead screw 81 is installed on the bracket 3, the screw block 83 is threadedly connected to the lead screw 81, and the lower surface of the screw block 83 is connected to the mounting seat 51. When the lead screw 81 rotates, the screw block 83 can be driven to move axially along the lead screw 81. The positioning rod 82 is installed on the bracket 3, the connecting block 84 is slidably connected to the positioning rod 82, and the lower surface of the connecting block 84 is connected to the mounting seat 51. By using the cooperation of the limit block 84 and the positioning rod 82, the mounting seat 51 can be kept stable, and the stability of the screw block 83 can be ensured to prevent self-rotation. The motor 85 is installed on the bracket 3, and the output end of the motor 85 is connected to one end of the lead screw 81. Turning on the motor 85 can drive the lead screw 81 to rotate. When in use, the motor 85 is turned on to drive the lead screw 81 to rotate, so that the screw block 83 drives the mounting seat 51 to move from above the conveyor belt 2 to above the stacking plate 7.

[0075] A lifting mechanism 9 is installed between the base 1 and the stacking plate 7. The lifting mechanism 9 can realize the intermittent and equidistant lifting of the stacking plate 7, ensuring that the position of the beam at the top can always correspond to the height of the grabbing mechanism 4. Fig.10 , Fig.11 , Fig.12 and Fig.13 The lifting mechanism 9 includes a second guide rod 91, a moving frame 92, a rotating rod 93, a first lever 94, a rotating disk 95 and a second lever 96. The second guide rod 91 is mounted on the base 1, and the moving frame 92 is slidably mounted on the second guide rod 91. The moving frame 92 can move axially along the second guide rod 91, and the second guide rod 91 is used to ensure stability during movement. The two ends of the rotating rod 93 are respectively rotatably mounted on the lower surface of the stacking plate 7 and the upper surface of the moving frame 92. When the moving frame 92 moves, the rotating rod 93 will rotate, thereby driving the stacking plate 7 to rise and fall. There are several first levers 94, which are equidistantly mounted on the moving frame 92, and the rotating disk 95 is rotatably mounted on the bracket 3. There are several second levers 96, which are equidistantly mounted on the rotating disk 95 along the circumferential direction, and the second lever 96 corresponds to the position of the first lever 94. When the rotating disk 95 rotates, the moving frame 92 can be moved by the second lever 96 to move the first lever 94.

[0076] In order to provide driving force for the turntable 95 so that the rotation range is equal each time, thereby ensuring that the moving frame 92 moves the same distance each time, refer to Fig.10 , Fig.11 , Fig.13 , Fig.14 and Fig.15 , the following scheme is proposed: a linkage mechanism 10 is also installed on the bracket 3. The linkage mechanism 10 includes a mounting frame 101, a ratchet 102, a first bevel gear 103, a second bevel gear 104, a connecting rod 105, a pull rod 106, a first clamping block 107, a mounting block 108, a first leaf spring 109, a limiting rod 1010, a second clamping block 1011, a second leaf spring 1012, a slideway 1013, a slider 1014 and a spring 1015. The mounting frame 101 is installed on the bracket 3, the ratchet 102 is rotatably installed on the mounting frame 101, the first bevel gear 103 is connected to the ratchet 102, the second bevel gear 104 is connected to the rotating disk 95 through the connecting rod 105, and the second bevel gear 104 is meshed with the first bevel gear 103. When the ratchet 102 drives the first bevel gear 103 to rotate, the second bevel gear 104 can drive the rotating disk 95 to rotate synchronously. The slideway 1013 is provided on the mounting frame 101, and the slider 1014 is slidably installed in the slideway 1013. The two ends of the spring 1015 are respectively connected to the slider 1014 and the inner wall of the slideway 1013. When the slider 1014 is subjected to an external force and slides in the slideway 1013, the spring 1015 will be stretched. After the external force is removed, the slider 1014 can be reset by the tension of the spring 1015. The pull rod 106 is connected to the slider 1014. The number of the slideway 1013 and the slider 1014 are both two, and the two slideways 1013 are arranged in an arc shape and the arc shape is concentric; the slider 1014 fits the inner wall of the slideway 1013, and the two slideways 1013 and the two sliders 1014 cooperate with each other to ensure that the pull rod 106 can rotate along a fixed track, and the center of rotation is the center of the arc where the slideway 1013 is located.

[0077] The first clamping block 107 is rotatably mounted on the pull rod 106, the mounting block 108 is mounted on the pull rod 106, and the first leaf spring 109 is mounted between the first clamping block 107 and the mounting block 108. When the first clamping block 107 is rotated by force, the first leaf spring 109 can be deformed, and the first clamping block 107 can be reset by the elastic force of the first leaf spring 109 after the external force is removed. The limiting rod 1010 is mounted on the pull rod 106, and the limiting rod 1010 prevents the first clamping block 107 from excessive rotation. The second clamping block 1011 is rotatably mounted on the mounting frame 101, and the second leaf spring 1012 is mounted between the mounting frame 101 and the second clamping block 1011. When the second clamping block 1011 is rotated by force, the second leaf spring 1012 can be deformed, and the second clamping block 1011 can be reset by the elastic force of the second leaf spring 1012 after the external force is removed. The first clamping block 107 and the second clamping block 1011 are both engaged with the ratchet 102.

[0078] When in use, when the translation mechanism 8 drives the mounting seat 51 to move in the direction of the stacking plate 7, the outer wall of the mounting seat 51 can drive the pull rod 106 to rotate, and then the first block 107 can drive the ratchet 102 to rotate, thereby driving the first bevel gear 103 to drive the second bevel gear 104 to rotate. At this time, the turntable 95 rotates, and the second lever 96 drives the first lever 94 to move the movable frame 92 a certain distance, and then the rotating rod 93 drives the stacking plate 7 to rise. Subsequently, the mounting seat 51 is reset, the pull rod 106 loses the external force, and is reset by the action of the spring 1015 and the slider 1014. During this process, the second block 1011 limits the ratchet 102, and the ratchet 102 cannot rotate in the opposite direction. At the same time, since the stacking plate 7 has a downward trend under the action of gravity, the moving frame 92 has a tendency to move in the opposite direction, and the rotating disk 95, the first bevel gear 103 and the second bevel gear 104 all have a tendency to rotate in the opposite direction, so when the pull rod 106 is not driven by an external force, it only has a tendency to reverse and cannot actively rotate forward. Therefore, when the second block 1011 limits the ratchet 102, the ratchet 102 cannot flip, and the stacking plate 7 is stable. In addition, since the mounting seat 51 moves the same distance each time, the pull rod 106 rotates at the same angle, thereby ensuring that the height of the stacking plate 7 is the same each time it is lifted. When the beams stacked on the top of the stacking plate 7 are used up, the first clamping block 107 and the second clamping block 1011 are manually pulled apart to reset the ratchet wheel 102, thereby resetting the stacking plate 7 and rearranging the beam profiles.

[0079] This embodiment scheme can not only automatically grab the mobile beam frame to ensure that the equipment can continuously perform assembly and welding work, but also automatically make the beam frame correspond to the grabbing mechanism 4, and can realize the automatic equidistant rising and locking of the beam frame without adding additional driving electrical components, thereby saving equipment costs.

[0080] In addition, another embodiment of the present invention further provides a method for using an assembly welding device for an automated production line of elevator door panels, comprising the following steps:

[0081] The conveyor belt 2 conveys the elevator door panel, and the guide plate 21 is used to limit the panel. After the panel is conveyed to the specified position, the conveyor belt is stopped;

[0082] Turn on the motor 85, and use the rotation of the lead screw 81 to drive the screw block 83 to move the mounting plate 51 to the top of the stacking plate 7;

[0083] The movement of the mounting plate 51 drives the pull rod 106 to rotate, and then the first block 107 drives the ratchet 102 to rotate, so that the first bevel gear 103 drives the second bevel gear 104 to rotate, and the turntable 95 drives the second lever 96 to rotate, and finally the mobile frame 92 is moved by shifting the first lever 94, and the stacking plate 7 is driven to rise by the rotating rod 93, at which time the top beam is aligned with the grabbing mechanism 4.

[0084] The following steps are also included:

[0085] The first electric push rod 57 is turned on to drive the driving plate 53 to move, and the driving rod 58 cooperates with the first guide groove 54 and the second guide groove 55 to drive the grabbing mechanism 4 to descend and align with the beam frame at the top;

[0086] Turn on the second electric push rod 48 to make the clamping jaws 44 clamp the profile;

[0087] The output end of the first electric push rod 57 retracts, so that the three grabbing mechanisms 4 are lifted one after another, and then the motor 85 starts in the reverse direction to return the mounting seat 51 to the top of the conveyor belt 2;

[0088] The first electric push rod 57 is turned on to lower the grabbing mechanism 4, and then the grabbing mechanism 4 in the middle releases the beam frame, and the output end of the first electric push rod 57 is retracted. When the grabbing mechanism 4 in the middle is lifted and the heights of the grabbing mechanisms 4 on both sides remain unchanged, the output end of the first electric push rod 57 is locked, and spot welding is performed using the welding robot 100;

[0089] Then, the grabbing mechanisms 4 on both sides release the beam frame, the output end of the first electric push rod 57 continues to retract, all the grabbing mechanisms 4 are lifted, and the welding robot 100 continues to perform spot welding.

[0090] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An assembly welding device for an automated production line of elevator door panels, characterized in that: include: A base (1), a conveyor belt (2), a bracket (3), three grabbing mechanisms (4) and a lifting part (5), wherein the conveyor belt (2) is mounted on the base (1), the bracket (3) is mounted on the base (1), the lifting part (5) is mounted on the bracket (3), the grabbing mechanism (4) is mounted on the lifting part (5), and the three grabbing mechanisms (4) can be lifted and lowered under the drive of the lifting part (5); The lifting part (5) comprises a mounting seat (51), a first guide rod (52), a driving plate (53), two first guide grooves (54), a second guide groove (55), a connecting plate (56), a first electric push rod (57) and three driving rods (58), wherein the first guide rod (52) is mounted on the mounting seat (51), the driving plate (53) is slidably mounted on the first guide rod (52), the two first guide grooves (54) and the second guide groove (55) are both provided on the driving plate (53), and the second guide groove (55) is Located between the two first guide grooves (54), one end of the three driving rods (58) is respectively installed in the two first guide grooves (54) and the second guide groove (55), and the other ends of the three driving rods (58) are respectively connected to the three grabbing mechanisms (4); the connecting plate (56) is installed on the driving plate (53), the first electric push rod (57) is installed on a side of the mounting seat (51) close to the connecting plate (56), and the output end of the first electric push rod (57) is connected to the connecting plate (56); It also includes a welding robot (100), which is installed on the outside of the base (1) and is located corresponding to the conveyor belt (2).

2. The assembly welding device for elevator door panel automated production line according to claim 1 is characterized in that: The first guide groove (54) comprises a first translation section (541), a first descending section (542), a stabilizing section (543), a first returning section (544), a restoring section (545) and a second returning section (546) which are connected in sequence; The second guide groove (55) comprises a second translation section (551), a second descending section (552) and a third translation section (553) which are connected in sequence.

3. The assembly welding device for elevator door panel automated production line according to claim 2 is characterized in that: The gripping mechanism (4) comprises a fixed seat (41), a movable seat (42), two connecting rods (43), a clamping claw (44), a fixed plate (45), a first slide groove (46), a first slider (47), a second electric push rod (48), a lifting plate (49) and a second slide groove (410), wherein the fixed seat (41) is mounted on the lower surface of the mounting seat (51), the fixed seat (41) is a hollow structure with an open bottom, the movable seat (42) is mounted in the fixed seat (41), and the other end of the driving rod (58) is connected to the movable seat (42); the two connecting rods (43) are mounted on the movable seat (42) and are symmetrically arranged relative to the movable seat (42); the number of the clamping claws (44) is four, and every two of the clamping claws (4 4) is a group, rotatably mounted on the connecting rod (43); the fixed plate (45) is mounted on the connecting rod (43), the number of the first slide grooves (46) is two, and the two first slide grooves (46) are respectively opened on the fixed plate (45), the first slider (47) is slidably installed in the first slide groove (46), and the first slider (47) is connected to the clamping claw (44); the second electric push rod (48) is mounted on the movable seat (42), the lifting plate (49) is installed at the output end of the second electric push rod (48), the second slide groove (410) is opened on the lifting plate (49), and the side of the first slider (47) away from the clamping claw (44) is installed in the second slide groove (410).

4. The assembly welding device for elevator door panel automated production line according to claim 3 is characterized in that: Two guide plates (21) are symmetrically mounted on the conveyor belt (2).

5. The assembly welding device for elevator door panel automated production line according to claim 4 is characterized in that: A guide column (6) is mounted on the base (1), and a stacking plate (7) is slidably mounted on the guide column (6); A translation mechanism (8) is installed between the bracket (3) and the lifting part (5), and the translation mechanism (8) can drive the lifting part (5) to move from above the conveyor belt (2) to above the stacking plate (7).

6. The assembly welding device for elevator door panel automated production line according to claim 5 is characterized in that: The translation mechanism (8) comprises a lead screw (81), a positioning rod (82), a screw block (83), a connecting block (84) and a motor (85); the lead screw (81) is mounted on the bracket (3); the screw block (83) is threadedly connected to the lead screw (81), and the lower surface of the screw block (83) is connected to the mounting seat (51); the positioning rod (82) is mounted on the bracket (3); the connecting block (84) is slidably connected to the positioning rod (82), and the lower surface of the connecting block (84) is connected to the mounting seat (51); the motor (85) is mounted on the bracket (3), and the output end of the motor (85) is connected to one end of the lead screw (81).

7. The assembly welding device for elevator door panel automated production line according to claim 6 is characterized in that: A lifting mechanism (9) is installed between the base (1) and the stacking plate (7); The lifting mechanism (9) comprises a second guide rod (91), a movable frame (92), a rotating rod (93), a first shifting rod (94), a rotating disk (95) and a second shifting rod (96); the second guide rod (91) is mounted on the base (1); the movable frame (92) is slidably mounted on the second guide rod (91); two ends of the rotating rod (93) are respectively rotatably mounted on the lower surface of the stacking plate (7) and the upper surface of the movable frame (92); the first shifting rod (94) is in a plurality and is respectively equidistantly mounted on the movable frame (92); the rotating disk (95) is rotatably mounted on the bracket (3); the second shifting rod (96) is in a plurality and is respectively equidistantly mounted on the rotating disk (95) along the circumferential direction, and the second shifting rod (96) corresponds to the first shifting rod (94) in position.

8. The assembly welding device for elevator door panel automated production line according to claim 7 is characterized in that: A linkage mechanism (10) is also installed on the bracket (3); The linkage mechanism (10) comprises a mounting frame (101), a ratchet (102), a first bevel gear (103), a second bevel gear (104), a connecting rod (105), a pull rod (106), a first clamping block (107), a mounting block (108), a first leaf spring (109), a limiting rod (1010), a second clamping block (1011), a second leaf spring (1012), a slideway (1013), a slider (1014) and a spring (1015); the mounting frame (101) is mounted on the bracket (3); the ratchet (102) is rotatably mounted on the mounting frame (101); the first bevel gear (103) is connected to the ratchet (102); the second bevel gear (104) is connected to the rotating disk (95) via the connecting rod (105); and the second bevel gear (104) and the first bevel gear (103) are meshed with each other; The slideway (1013) is provided on the mounting frame (101), the slider (1014) is slidably mounted in the slideway (1013), and two ends of the spring (1015) are respectively connected to the slider (1014) and the inner wall of the slideway (1013); The pull rod (106) is connected to the slider (1014); the first clamping block (107) is rotatably mounted on the pull rod (106); the mounting block (108) is mounted on the pull rod (106); the first leaf spring (109) is mounted between the first clamping block (107) and the mounting block (108); the limiting rod (1010) is mounted on the pull rod (106); the second clamping block (1011) is rotatably mounted on the mounting frame (101); and the second leaf spring (1012) is mounted between the mounting frame (101) and the second clamping block (1011).

9. A method for using an assembly welding device, characterized in that: The implementation of the method relies on the assembly welding device for elevator door panel automated production line according to any one of claims 1 to 8, and comprises the following steps: The conveyor belt (2) conveys the elevator door panel, and the panel is limited by the guide plate (21). After the panel is conveyed to the designated position, the conveyor belt is stopped; Turn on the motor (85), and use the rotation of the lead screw (81) to drive the screw block (83) to move the mounting plate (51) to the top of the stacking plate (7); The movement of the mounting plate (51) drives the pull rod (106) to rotate, and then the first clamping block (107) drives the ratchet (102) to rotate, so that the first bevel gear (103) drives the second bevel gear (104) to rotate, so that the turntable (95) drives the second lever (96) to rotate, and finally the moving frame (92) is moved by shifting the first lever (94), and the stacking plate (7) is driven to rise by the rotating rod (93), at which time the topmost beam frame is aligned with the grabbing mechanism (4).

10. The method for using the assembly welding device according to claim 9, characterized in that: The following steps are also included: The first electric push rod (57) is turned on to drive the driving plate (53) to move, and the driving rod (58) cooperates with the first guide groove (54) and the second guide groove (55) to drive the grabbing mechanism (4) to descend and align with the beam frame at the top; Turning on the second electric push rod (48) to enable the clamping claw (44) to clamp the profile; The output end of the first electric push rod (57) is retracted, so that the three grabbing mechanisms (4) are lifted successively, and then the motor (85) is started in reverse to make the mounting seat (51) return to the top of the conveyor belt (2); The first electric push rod (57) is turned on to lower the grabbing mechanism (4), and then the grabbing mechanism (4) located in the middle releases the beam frame, and the output end of the first electric push rod (57) is retracted. When the grabbing mechanism (4) located in the middle is raised and the heights of the grabbing mechanisms (4) on both sides remain unchanged, the output end of the first electric push rod (57) is locked, and spot welding is performed using a welding robot (100); Then, the grabbing mechanisms (4) on both sides release the beam frame, the output end of the first electric push rod (57) continues to retract, all the grabbing mechanisms (4) are fully lifted, and spot welding is continued using the welding robot (100).

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