Sheet metal welding fixing device for elevator

Abstract

The utility model discloses a sheet metal part welding fixing device for elevator relates to elevator sheet metal part welding technical field, including work table, install the main positioning assembly for positioning first sheet metal part on the work table, install the auxiliary positioning assembly for positioning second sheet metal part on the main positioning assembly, it has the advantage that the position of second sheet metal part is conveniently and quickly positioned to reduce measurement error, and welding efficiency is improved simultaneously.

Description

Technical Field

[0001] This utility model belongs to the field of elevator sheet metal welding technology, and more specifically it relates to a sheet metal welding and fixing device for elevators. Background Technology

[0002] As an indispensable vertical transportation device in modern buildings, elevators are used in a variety of scenarios, including large commercial complexes, high-rise office buildings, educational institutions, and mountain sightseeing areas. With the iterative upgrades of elevator technology, users' requirements for the smoothness of car operation and the comfort of passengers have evolved from basic functional needs to core indicators for measuring product quality, which places higher demands on elevator manufacturing processes.

[0003] In the field of elevator sheet metal structural component manufacturing, most are composite sheet metal component structures, such as... Figure 1 The composite sheet metal assembly shown consists of a first sheet metal part and a second sheet metal part joined together by welding. Large-scale manufacturers generally use automated assembly line welding processes, ensuring assembly accuracy through precision positioning systems and programmed welding paths. However, for small and medium-sized manufacturing enterprises, the high cost of investing in automated equipment and the limited order volume create a contradiction, leading them to still rely on traditional manual welding processes.

[0004] In practice, operators need to go through a multi-step positioning process: first, the theoretical coordinates of the second sheet metal part on the first sheet metal part need to be determined manually, and the first end positioning is completed by spot welding; then, a second measurement and end positioning welding are performed; finally, the middle joint is welded to complete the overall fixation. This welding method is inefficient. The systematic errors generated by the two independent measurements and the human operation deviations are superimposed, resulting in a large error. At the same time, the angle offset or position deviation that may occur during the positioning process will lead to poor consistency of subsequent batch products. Therefore, there is an urgent need for a sheet metal welding and fixing device for elevators to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a sheet metal welding and fixing device for elevators, which has the advantages of convenient and quick positioning of the second sheet metal part, thereby reducing measurement errors and improving welding efficiency.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A sheet metal welding and fixing device for elevators includes a worktable. A main positioning component for positioning a first sheet metal part is mounted on the worktable. An auxiliary positioning component for positioning a second sheet metal part is mounted on the main positioning component. The main positioning component includes a baffle, two side plates, a clamping component, and a pre-clamping component. The baffle and the two side plates are fixedly connected and installed at one end of the worktable, with the side plates perpendicular to the baffle. The pre-clamping component is mounted on the baffle via a mounting plate and outputs power towards the worktable. The clamping component includes at least two sets and is symmetrically installed on the surface of the worktable.

[0008] The advantages of this scheme are at least as follows: When welding the first sheet metal part and the second sheet metal part, the first sheet metal part is first placed on the surface of the worktable, and one end of the first sheet metal part is pre-positioned between the two side plates. Then, the clamping assembly is activated to clamp and fix the first sheet metal part, and the pre-pressing assembly is driven to press and fix the first sheet metal part vertically, thereby preventing the first sheet metal part from moving on the worktable. Then, the second sheet metal part is placed on the first sheet metal part, and the position of the second sheet metal part is positioned by the auxiliary positioning assembly. Then, the welding device continuously welds the first sheet metal part and the second sheet metal part, avoiding the need for two welding positioning measurements in the prior art. The auxiliary positioning assembly makes it convenient for the user to quickly position the second sheet metal part, reducing measurement errors, thereby improving the welding yield and welding efficiency.

[0009] The present invention is further configured such that: the auxiliary positioning component includes: two adjusting plates slidably mounted on the baffle and an adjusting mechanism for driving the adjusting plates to make adjustments, and the adjusting plates are also provided with an auxiliary positioning plate.

[0010] The present invention is further configured such that: the adjustment mechanism includes a mounting base, a bidirectional lead screw and a turntable; the mounting base is mounted on the main positioning assembly; the bidirectional lead screw is rotatably mounted on the mounting base and driven by the turntable; the bidirectional lead screw has a reverse thread section; and the two adjustment plates are respectively threadedly engaged with the reverse thread section.

[0011] The advantages of this scheme are at least as follows: Before pre-positioning the second sheet metal part, the position of the adjusting plate is adjusted according to the width of the second sheet metal part through the adjusting mechanism. During adjustment, a rotating turntable drives the bidirectional lead screw to rotate. Since the bidirectional lead screw has a reverse thread section, the two adjusting plates move towards each other on the main positioning assembly, thereby adjusting the distance between the two adjusting plates to accommodate the width of the second sheet metal part. Subsequently, by placing the second sheet metal part between the two adjusted adjusting plates, and with the action of the auxiliary positioning plate, the specific position of the second sheet metal part on the first sheet metal part is positioned. This method eliminates the need to measure the theoretical coordinate relationship between the first and second ends of the second sheet metal part and the first sheet metal part, reducing measurement work and minimizing measurement errors. This not only improves the welding yield but also increases the welding efficiency.

[0012] The present invention is further configured such that: the adjusting plate is provided with a rotating adjusting screw inside, one end of the adjusting screw extends out of the side wall of the adjusting plate and is connected to a knob, and the auxiliary positioning plate is threadedly engaged with the adjusting screw and slidably mounted on the adjusting plate.

[0013] The advantages of this scheme are at least as follows: by rotating the adjusting screw with a knob, the adjusting screw can drive the auxiliary positioning plate to move on the adjusting plate, so that for different products, the distance between the short sides of the first sheet metal part and the short sides of the second sheet metal part along their length direction can be adjusted, thereby adapting to products of different specifications.

[0014] The present invention is further configured to include an auxiliary clamping assembly, which includes a mounting frame, at least two main clamping assemblies and an auxiliary clamping assembly. The mounting frame is straddling the workbench, and the main clamping assemblies and auxiliary clamping assemblies are fixedly mounted on the mounting frame and output power toward the workbench.

[0015] The advantages of this scheme are at least as follows: the two main clamping components provide auxiliary clamping to the first sheet metal part in the vertical direction, thereby making the first sheet metal part more firmly fixed on the worktable; the auxiliary clamping component provides auxiliary clamping to the second sheet metal part in the vertical direction. Through the combined action of the main clamping components and the auxiliary clamping components, a more uniform and powerful clamping pressure can be achieved, ensuring that the first and second sheet metal parts are more stable on the worktable and preventing displacement.

[0016] The present invention is further configured such that: the mounting bracket is slidably connected to the worktable via a guide rail mechanism, and the bottom of both sides of the mounting bracket is connected to the sliding components of the guide rail mechanism.

[0017] The advantages of this scheme are at least as follows: the mounting bracket can slide freely along the worktable via the guide rail mechanism, thereby adapting to the vertical clamping and fixing of first and second sheet metal parts of different lengths.

[0018] The present invention is further configured such that: a scale is provided on the adjustment mechanism, the scale on the scale is symmetrically calibrated, and an indicator needle corresponding to the scale is installed on the adjustment plate.

[0019] The advantages of this scheme are at least as follows: when adjusting the adjustment plate, the adjustment range can be clearly observed and controlled by pointing the indicator needle to the scale on the ruler, thereby achieving accurate positioning and reducing adjustment errors.

[0020] The present invention is further configured such that: the cross-section of the auxiliary positioning plate is L-shaped, and a secondary clamping component is also installed on the auxiliary positioning plate.

[0021] The advantages of this scheme are at least as follows: the secondary clamping component clamps and fixes the second sheet metal part again in the vertical direction, forming a three-point positioning with the auxiliary clamping component, which makes the fixation of the second sheet metal part more secure.

[0022] The present invention is further configured such that: an embedded magnetic suction component is provided on one side of the adjustment plate, and one corner of the adjustment plate is provided as a rounded transition.

[0023] The advantages of this scheme are at least as follows: after the second sheet metal part is placed inside the two adjusting plates, the magnetic suction component can further fix the second sheet metal part in position, preventing displacement. The rounded corner of the adjusting plate can avoid scratching the second sheet metal part, and the smooth rounded transition makes it easier to place the second sheet metal part between the two adjusting plates.

[0024] The present invention is further configured such that: a plurality of through holes and a material handling groove are provided on the surface of the workbench; a roller seat is installed in the through hole; a roller is installed on the roller seat; adjacent roller seats are connected and fixed by a fixing plate; and a lifting mechanism for driving the roller seats to rise and fall is provided at the bottom of the workbench.

[0025] The advantages of this solution are at least as follows: After welding is completed, the lifting mechanism is activated to lift the roller seat, causing the roller on the roller seat to protrude from the upper surface of the worktable. When taking the welded sheet metal assembly, the sheet metal assembly can be easily removed from the worktable through the material chute and the roller, while also avoiding direct friction between the first sheet metal part and the worktable surface, reducing the risk of scratches.

[0026] In summary, this utility model has at least the following advantages:

[0027] 1. By setting up a main positioning component and an auxiliary positioning component, when welding the first sheet metal part and the second sheet metal part is required, the first sheet metal part is first placed on the worktable, and one end of the first sheet metal part is clamped between the two side plates for predetermined positioning. Then, the clamping component is activated to clamp and fix the first sheet metal part, and the pre-clamping component is driven to clamp and fix the first sheet metal part in the vertical direction. According to the width of the second sheet metal part, the position of the adjusting plate is adjusted by the adjusting mechanism. During adjustment, the turntable is rotated, and the turntable drives the bidirectional lead screw to rotate. Since the bidirectional lead screw has a reverse thread section, it makes the two adjusting plates in the main... The positioning components move towards each other to adjust the distance between the two adjustment plates to accommodate the width of the second sheet metal part. Then, by placing the second sheet metal part between the two adjusted plates and with the help of the auxiliary positioning plate, the specific position of the second sheet metal part on the first sheet metal part is positioned. This method eliminates the need to measure the theoretical coordinate relationship between the first and second sheet metal parts and the first sheet metal part, avoiding the need for two measurements for welding positioning in the prior art. At the same time, the auxiliary positioning components make it convenient for users to quickly position the second sheet metal part, reduce measurement errors, and thus improve welding yield and welding efficiency.

[0028] 2. By setting auxiliary clamping components, the two main clamping components provide auxiliary clamping in the vertical direction for the first sheet metal part, thereby making the first sheet metal part more firmly fixed on the worktable. The auxiliary clamping component provides auxiliary clamping in the vertical direction for the second sheet metal part. Through the combined action of the main clamping components and the auxiliary clamping components, a more uniform and powerful clamping pressure can be achieved, ensuring that the first and second sheet metal parts are more stable on the worktable and preventing displacement.

[0029] 3. By setting up a material pick-up trough, roller seat, roller, fixed plate and lifting mechanism, after welding is completed, the lifting mechanism is activated to lift the roller seat, so that the roller on the roller seat protrudes from the upper surface of the worktable. When picking up the welded sheet metal assembly, the sheet metal assembly can be easily removed from the worktable through the material pick-up trough and roller, which also avoids the first sheet metal part from directly rubbing against the worktable surface and reduces the risk of scratches. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of a sheet metal assembly in the prior art;

[0031] Figure 2 This is an overall schematic diagram of the assembly with the sheet metal parts in this embodiment;

[0032] Figure 3 This is one of the overall schematic diagrams of this embodiment;

[0033] Figure 4 This is an overall schematic diagram of the main positioning component and the auxiliary positioning component in this embodiment;

[0034] Figure 5 This is an exploded view of the adjusting plate and the auxiliary positioning plate in this embodiment;

[0035] Figure 6 This is the second overall schematic diagram of this embodiment;

[0036] Figure 7 This is an overall schematic diagram of the roller base, roller, and fixing plate in this embodiment.

[0037] Reference numerals: 1. Workbench; 2. Main positioning assembly; 201. Baffle; 202. Side plate; 203. Clamping assembly; 204. Pre-clamping assembly; 3. Auxiliary positioning assembly; 301. Adjusting plate; 302. Adjusting mechanism; 3021. Mounting base; 3022. Two-way lead screw; 3023. Turntable; 303. Auxiliary positioning plate; 4. Adjusting screw; 5. Knob; 6. Auxiliary clamping assembly; 601. Mounting bracket; 602. Main clamping assembly; 603. Auxiliary clamping assembly; 7. Guide rail mechanism; 8. Scale; 9. Indicator needle; 10. Secondary clamping assembly; 11. Magnetic suction assembly; 12. Through hole; 13. Roller seat; 14. Roller; 15. Fixing plate; 16. Lifting mechanism; 17. Material handling chute; 18. First sheet metal part; 19. Second sheet metal part. Detailed Implementation

[0038] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, where there is no conflict, the embodiments of this utility model and the features within them can be combined with each other.

[0039] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0040] Example 1

[0041] like Figure 2As shown, a sheet metal welding and fixing device for elevators includes a workbench 1. A main positioning component 2 for positioning a first sheet metal part 18 is mounted on the workbench 1. An auxiliary positioning component 3 for positioning a second sheet metal part 19 is mounted on the main positioning component 2. The device also includes an auxiliary clamping component 6, which includes a mounting frame 601, at least two main clamping components 602, and an auxiliary clamping component 603. The mounting frame 601 spans across the workbench 1, and the main clamping components 602 and auxiliary clamping components 603 are fixedly mounted on the mounting frame 601. Power is output to the worktable 1. When welding the first sheet metal part 18 and the second sheet metal part 19, the first sheet metal part 18 is first placed on the surface of the worktable 1, and then positioned by the main positioning component 2. Then the second sheet metal part 19 is placed on the first sheet metal part 18, and the position of the second sheet metal part 19 is positioned by the auxiliary positioning component 3. Finally, the auxiliary clamping component 6 is used to clamp and fix it in the vertical direction, so that the first sheet metal part 18 and the second sheet metal part 19 are more stable on the worktable 1 and avoid displacement.

[0042] like Figure 3 As shown, the mounting bracket 601 is slidably connected to the worktable 1 via the guide rail mechanism 7. The bottom of both sides of the mounting bracket 601 is connected to the sliding parts of the guide rail mechanism 7. Through the guide rail mechanism 7, the mounting bracket 601 can slide freely along the worktable 1, thereby adapting to the vertical pressing and fixing of the first sheet metal part 18 and the second sheet metal part 19 of different lengths. Specifically, the guide rail mechanism 7 consists of two electric slide rails symmetrically installed on the side wall of the worktable 1. The bottom of the mounting bracket 601 is fixedly installed on the top of the sliding parts on the electric slide rails.

[0043] like Figure 3As shown, to facilitate the clamping and fixing of the first sheet metal part 18, in some embodiments, the main positioning component 2 includes: a baffle 201, two side plates 202, a clamping component 203, and a pre-clamping component 204. The baffle 201 and the two side plates 202 are fixedly connected and installed at one end of the worktable 1, with the two side plates 202 perpendicular to the baffle 201. In other preferred embodiments, the two side plates 202 can also be adjustablely installed on the worktable 1 or the baffle 201 to accommodate first sheet metal parts of different widths. The pre-clamping component 204 is installed on the baffle 201 via a mounting plate and outputs power towards the worktable 1. The clamping component 203 includes at least two sets, symmetrically installed... On the surface of the workbench 1, the clamping assembly 203 consists of two guide rod cylinders, which are symmetrically mounted on the workbench 1 and each has a clamping plate installed at its output end. The guide rod cylinders can be Airtac dual-axis dual-guide rod cylinders, Airtac three-axis three-guide rod cylinders, or Shantoulin Village three-axis guide rod cylinders. The pre-clamping assembly 204 can be an electric push rod, a pneumatic cylinder, or a hydraulic cylinder, which can clamp the first sheet metal part 18 in the vertical direction. In some embodiments, in order to avoid scratching the first sheet metal part 18, a rubber sheet is pasted on the surface of the clamping plate, or a rubber sleeve is fitted on the clamping plate. At the same time, the rubber sheet or rubber sleeve is also provided with anti-slip texture, thereby increasing the friction between the pressure plate and the sheet metal part.

[0044] like Figure 4 As shown, in some embodiments, in order to better and faster position the second sheet metal part 19, the auxiliary positioning component 3 includes: two adjusting plates 301 slidably mounted on the baffle 201 and an adjusting mechanism 302 for driving the adjusting plates 301 to adjust. The adjusting plates 301 are also provided with an auxiliary positioning plate 303. The adjusting mechanism 302 includes a mounting base 3021, a bidirectional lead screw 3022 and a turntable 3023. The mounting base 3021 is mounted on the main positioning component 2. The bidirectional lead screw 3022 is rotatably mounted on the mounting base 3021 and driven by the turntable 3023. The bidirectional lead screw 3022 has a reverse thread section. The two adjusting plates 301 are respectively threaded with the reverse thread section.

[0045] A scale 8 is provided on the adjustment mechanism 302. The scale 8 is fixedly installed on the top of the mounting base 3021. The scale on the scale 8 is symmetrically calibrated. An indicator needle 9 corresponding to the scale 8 is installed on the adjustment plate 301. When adjusting the adjustment plate 301, the indicator needle 9 points to the scale on the scale 8, so that the adjustment range can be clearly observed and controlled, accurate positioning can be achieved, and adjustment errors can be reduced.

[0046] like Figure 5As shown, the adjusting plate 301 has a rotating adjusting screw 4 inside. One end of the adjusting screw 4 extends out of the side wall of the adjusting plate 301 and is connected to a knob 5. The auxiliary positioning plate 303 is threadedly engaged with the adjusting screw 4 and slidably mounted on the adjusting plate 301. By rotating the adjusting screw 4 using the knob 5, the adjusting screw 4 can drive the auxiliary positioning plate 303 to move on the adjusting plate 301. This allows for adjustment of the distance between the short sides of the first sheet metal part 18 and the second sheet metal part 19 to accommodate different products. In other embodiments, a scale line can be set on the top surface of the adjusting plate 301, and an indicator head can be installed on the auxiliary positioning plate 303. Through the scale line and the indicator head, the position of the auxiliary positioning plate can be precisely adjusted, thereby more accurately adjusting the distance between the short sides of the first sheet metal part 18 and the second sheet metal part 19 to accommodate different product specifications.

[0047] It is worth mentioning that the auxiliary positioning plate 303 has an L-shaped cross section and a secondary clamping component 10 is also installed on the auxiliary positioning plate 303. The secondary clamping component 10 clamps and fixes the second sheet metal part 19 again in the vertical direction. The secondary clamping component 10 and the auxiliary clamping component 603 form a three-point positioning, which makes the fixation of the second sheet metal part 19 more secure.

[0048] like Figure 5 As shown, in order to further prevent the second sheet metal part 19 from shifting after being placed into the two adjusting plates 301, in some embodiments, an embedded magnetic suction component 11 is provided on one side of the adjusting plate 301. The magnetic suction component 11 is specifically a magnet. In order to make it easier for the second sheet metal part 19 to be placed between the two adjusting plates 301, and at the same time to avoid the sharp edges of the adjusting plate 301 from scratching the second sheet metal part 19, one edge of the adjusting plate 301 is set as a rounded transition.

[0049] The main clamping assembly 602, auxiliary clamping assembly 603, and secondary clamping assembly 10 can be electric push rods, pneumatic cylinders, or hydraulic cylinders, capable of clamping and fixing the first sheet metal part 18 and the second sheet metal part 19 in the vertical direction. Pressure plates are installed at the output ends of these components. Rubber sheets are pasted on the surface of the pressure plates, or rubber sleeves are fitted on the pressure plates to prevent the pressure plates from directly contacting the sheet metal parts and causing damage. At the same time, the rubber sheets or rubber sleeves are also provided with anti-slip textures to increase the friction between the pressure plates and the sheet metal parts.

[0050] Example 2

[0051] like Figure 6 , Figure 7 As shown (refer to) Figure 3To facilitate the removal of welded sheet metal assemblies from the workbench 1, in some embodiments, several through holes 12 and material handling slots 17 are provided on the surface of the workbench 1. Roller seats 13 are installed within the through holes 12, and rollers 14 are mounted on the roller seats 13. Adjacent roller seats 13 are connected and fixed by fixing plates 15. A lifting mechanism 16 for driving the roller seats 13 to rise and fall is provided at the bottom of the workbench 1. After welding is completed, by activating the lifting mechanism 16, the lifting mechanism 16 lifts the roller seats 13 and... The roller 14 on the roller seat 13 protrudes from the upper surface of the worktable 1. When taking the welded sheet metal assembly, the sheet metal assembly can be easily removed from the worktable 1 through the material pick 17 and the roller 14. At the same time, the first sheet metal part 18 is prevented from directly rubbing against the surface of the worktable 1, reducing the risk of scratches. The lifting mechanism 16 is specifically a telescopic cylinder or a telescopic hydraulic cylinder, which is installed at the bottom of the worktable 1 through the mounting frame. An L-shaped rod is installed at its output end, and the other end of the L-shaped rod is fixedly connected to the fixing plate 15.

[0052] Example 3

[0053] Based on Embodiment 1 or Embodiment 2, this utility model also provides a fixing method for a sheet metal welding fixing device. First, according to the width of the second sheet metal part 19, the position of the adjusting plate 301 is adjusted by the adjusting mechanism 302. During adjustment, the turntable 3023 is rotated, and the turntable 3023 drives the bidirectional lead screw 3022 to rotate. Since the bidirectional lead screw 3022 has a reverse thread section, the two adjusting plates 301 move towards each other on the main positioning component 2, thereby adjusting the distance between the two adjusting plates 301. By pointing the indicator needle 9 to the scale on the scale 8, the adjustment range can be clearly observed and controlled to achieve accurate positioning to adapt to the width of the second sheet metal part 19. Then, the adjusting screw 4 is rotated by the knob 5. The adjusting screw 4 can drive the auxiliary positioning plate 303 to move on the adjusting plate 301 to adjust the distance between the short side of the first sheet metal part 18 and the short side of the second sheet metal part 19.

[0054] Next, the first sheet metal part 18 is placed on the workbench 1, so that one end of the first sheet metal part 18 is locked between the two side plates 202 for predetermined positioning. The clamping components 203 are activated to clamp and fix the first sheet metal part 18, and the pre-pressing components 204 are activated to press and fix the first sheet metal part 18 in the vertical direction, thereby preventing the first sheet metal part 18 from moving on the workbench 1. Then, the second sheet metal part 19 is placed between the two adjusted adjustment plates 301. The arc transition makes the second sheet metal part 19 fit better, and the magnetic suction components 11 on the side wall of the adjustment plate 301 further attract and fix the second sheet metal part 19 to prevent displacement.

[0055] After completing the above actions, the main clamping assembly 602, the auxiliary clamping assembly 603, and the secondary clamping assembly 10 are finally activated. The two main clamping assemblies 602 assist in clamping the first sheet metal part 18 in the vertical direction, forming a three-point positioning fixation with the pre-clamping assembly 204, thereby making the first sheet metal part 18 more firmly fixed on the worktable 1. The auxiliary clamping assembly 603 assists in clamping the second sheet metal part 19 in the vertical direction. The secondary clamping assembly 10 clamps and fixes the second sheet metal part 19 again in the vertical direction. At the same time, the secondary clamping assembly 10 and the auxiliary clamping assembly 603 form a three-point positioning fixation, making the fixation of the second sheet metal part 19 more secure.

[0056] Finally, the first sheet metal part 18 and the second sheet metal part 19 are welded by the welding device. After the welding is completed, the main clamping assembly 602, the auxiliary clamping assembly 603, the secondary clamping assembly 10 and the pre-clamping assembly 204 are closed. Then the lifting mechanism 16 is started. The lifting mechanism 16 lifts the roller seat 13 and makes the roller 14 on the roller seat 13 protrude from the upper surface of the worktable 1. The sheet metal assembly is removed from the worktable 1 through the material pick-up slot 17.

[0057] Using the aforementioned fixing device for fixing and welding eliminates the need to measure the theoretical coordinate relationship between the first sheet metal part 18 and the first sheet metal part 19 at the beginning or end. This avoids the need for two measurements for welding positioning required in the prior art, allowing the operator to quickly position the second sheet metal part 19, reducing measurement errors, and thus improving welding yield and efficiency.

[0058] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0059] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A sheet metal welding and fixing device for elevators, comprising a workbench (1), characterized in that: The workbench (1) is equipped with a main positioning component (2) for positioning the first sheet metal part (18). The main positioning component (2) includes: a baffle (201), two side plates (202), a clamping component (203), and a pre-clamping component (204). The baffle (201) and the two side plates (202) are fixedly connected and installed at one end of the workbench (1), and the two side plates (202) are perpendicular to the baffle (201). The pre-clamping component (204) is installed on the baffle (201) through a mounting plate and outputs power to the workbench (1). The clamping component (203) includes at least two sets and is symmetrically installed on the surface of the workbench (1). The main positioning component (2) is equipped with an auxiliary positioning component (3) for positioning the second sheet metal part (19).

2. The sheet metal welding and fixing device for elevators according to claim 1, characterized in that: The auxiliary positioning component (3) includes: two adjusting plates (301) slidably mounted on the baffle (201) and an adjusting mechanism (302) for driving the adjusting plates (301) to make adjustments. The adjusting plates (301) are also provided with an auxiliary positioning plate (303).

3. The sheet metal welding and fixing device for elevators according to claim 2, characterized in that: The adjustment mechanism (302) includes a mounting base (3021), a bidirectional lead screw (3022), and a turntable (3023). The mounting base (3021) is mounted on the main positioning assembly (2). The bidirectional lead screw (3022) is rotatably mounted on the mounting base (3021) and driven by the turntable (3023). The bidirectional lead screw (3022) has a reverse thread section, and the two adjustment plates (301) are respectively threaded into the reverse thread section.

4. The sheet metal welding and fixing device for elevators according to claim 3, characterized in that: The adjusting plate (301) is provided with a rotating adjusting screw (4) inside. One end of the adjusting screw (4) extends out of the side wall of the adjusting plate (301) and is connected to a knob (5). The auxiliary positioning plate (303) is threadedly engaged with the adjusting screw (4) and is slidably installed on the adjusting plate (301).

5. The sheet metal welding and fixing device for elevators according to claim 1, characterized in that: It also includes an auxiliary clamping assembly (6), which includes a mounting frame (601), at least two main clamping assemblies (602) and an auxiliary clamping assembly (603). The mounting frame (601) is straddling the workbench (1), and the main clamping assemblies (602) and the auxiliary clamping assemblies (603) are fixedly mounted on the mounting frame (601).

6. The sheet metal welding and fixing device for elevators according to claim 5, characterized in that: The mounting bracket (601) is slidably connected to the worktable (1) via the guide rail mechanism (7), and the bottom of both sides of the mounting bracket (601) is connected to the sliding parts of the guide rail mechanism (7).

7. The sheet metal welding and fixing device for elevators according to claim 3, characterized in that: The adjustment mechanism (302) is provided with a scale (8), the scale on the scale (8) is symmetrically calibrated, and an indicator needle (9) corresponding to the scale (8) is installed on the adjustment plate (301).

8. The sheet metal welding and fixing device for elevators according to claim 2, characterized in that: The auxiliary positioning plate (303) has an L-shaped cross section, and a secondary clamping assembly (10) is also installed on the auxiliary positioning plate (303).

9. The sheet metal welding and fixing device for elevators according to claim 3, characterized in that: An embedded magnetic suction component (11) is provided on one side of the adjustment plate (301), and one corner of the adjustment plate (301) is rounded.

10. The sheet metal welding and fixing device for elevators according to claim 1, characterized in that: A plurality of through holes (12) and a material picking groove (17) are provided on the surface of the workbench (1). A roller seat (13) is installed in the through hole (12), and a roller (14) is installed on the roller seat (13). The adjacent roller seats (13) are connected and fixed by a fixing plate (15). A lifting mechanism (16) for driving the roller seat (13) to rise and fall is provided at the bottom of the workbench (1).

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