Special machine for combining secondary bending of steel belt with spot welding machine

Abstract

The invention belongs to the technical field of steel belt machining, and particularly relates to a special machine for combining a steel belt secondary bending machine and a spot welding machine, which comprises a worktable, a steel belt straightening mechanism is fixedly mounted at the top of the worktable, and a steel belt secondary bending mechanism is arranged at the top of the worktable and is far away from the steel belt straightening mechanism; and the steel belt straightening mechanism comprises a fixing frame, the bottom of the fixing frame is fixedly connected with the top of the workbench, a lead screw is rotationally installed on the inner surface of the fixing frame, and a rotating disc is fixedly installed at the right end of the lead screw. According to the special machine for combining the steel belt secondary bending machine and the spot welding machine, a preliminarily folded steel belt is placed on the workbench, an air cylinder drives an ejector rod through an air rod to eject three faces of the steel belt to a pressing plate to fix the steel belt, then a worker rotates a rotating disc, the rotating disc drives a guiding straightening block to move through a lead screw, and the guiding straightening block drives a moving plate to move; and two sets of straightening equipment composed of the four guiding straightening blocks are moved, and the two sides of the steel belt are straightened.

Description

Technical Field

[0001] The invention relates to the technical field of steel strip processing, in particular to a special machine combining a steel strip secondary bending machine and a spot welding machine. Background Art

[0002] Welding is the process of connecting metal parts using various fusible alloys. Welding ensures the continuity of the metal. Since the melting point of solder is lower than that of the material being welded, the parts will be welded through intermolecular contact on their surface without being melted. With the continuous development of the manufacturing industry, higher requirements are placed on the performance and efficiency of steel strip folding and welding equipment. Electronic technology, automatic control technology, etc. are gradually applied to the equipment, which significantly improves the automation level of the equipment. Equipment that can realize automatic feeding, folding and welding of steel strips has emerged, greatly improving production efficiency and product quality.

[0003] At present, the steel strip is first bent once and then placed in the welding equipment for welding. This will cause the following problems in actual operation:

[0004] 1. After folding and transportation, the steel strips usually have slight deformation. After welding these folded steel strips, there is a 1mm tolerance band in the feeding length, which cannot meet the customer's 0.5mm tolerance band requirement;

[0005] 2. The existing steel strip bending and welding are usually operated by two devices. The bending machine folds and cuts the steel strip, and then the staff puts the folded steel strip into the welding machine. The welding machine welds the overlapping parts of the steel strip. Due to the one-time bending, it may cause greater stress concentration on the steel strip, especially for thicker or harder steel strips, which is easy to cause cracks, fractures and other damage to the material. Therefore, a device that can fold the steel strip twice and weld it is needed. Summary of the invention

[0006] In order to overcome the above-mentioned defects of the prior art, the inventors conducted in-depth research and completed the present invention after paying a lot of creative work.

[0007] Specifically, the technical problem to be solved by the present invention is to provide a special machine that combines a steel strip secondary bending machine with a spot welding machine to solve the current problems of slight deformation in the steel strip bending process, resulting in length tolerance, and drilling positioning before steel strip welding, which consumes a lot of time, and the cost of consumables in the original OP10 process and the punching caused by the wear of the punch needle, which continuously forms the technical problem of scrapping of semi-finished products.

[0008] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0009] A special machine combining a steel strip secondary bending machine and a spot welding machine comprises a workbench, a steel strip straightening mechanism is fixedly installed on the top of the workbench, a steel strip secondary bending mechanism is arranged on the top of the workbench and away from the steel strip straightening mechanism, and a steel strip pressing mechanism is arranged on the top of the workbench and away from the steel strip straightening mechanism;

[0010] The steel belt straightening mechanism comprises a fixed frame, the bottom of which is fixedly connected to the top of the workbench, a screw rod is rotatably mounted on the inner surface of the fixed frame, and a turntable is fixedly mounted on the right end of the screw rod.

[0011] As an improved technical solution, the steel strip straightening mechanism also includes a movable plate, the bottom of which is slidably connected to the top of the workbench, and a guide straightening block is fixedly installed on the top of the movable plate, and the inner surface of the guide straightening block is threadedly connected to the outer surface of the screw rod.

[0012] As an improved technical solution, the steel strip secondary bending mechanism includes a rotating plate, the bottom of which is rotatably connected to the inner surface of the workbench through a driving device, a rotating rod is fixedly installed on the top of the rotating plate, and a bending rod is arranged at the top of the rotating plate and away from the rotating rod.

[0013] As an improved technical solution, the steel strip secondary bending mechanism further includes a guide rod, the bottom end of which is fixedly connected to the top of the rotating plate.

[0014] As an improved technical solution, the steel belt clamping mechanism includes a cylinder, the bottom of which is fixedly connected to the top of the workbench, the output end of the cylinder is fixedly mounted with a gas rod via a piston, and the front end of the gas rod is fixedly mounted with a push rod.

[0015] As an improved technical solution, the steel belt clamping mechanism further includes a pressing plate, the bottom of which is fixedly connected to the top of the workbench.

[0016] As an improved technical solution, a spot welder is arranged on the top of the workbench and away from the steel strip secondary bending mechanism.

[0017] A special machine for secondary bending and welding of steel strips, the steps of the method for combining secondary bending and spot welding of steel strips are as follows:

[0018] S1. The steel strip raw material is flattened and placed into the bending machine;

[0019] S2, the bending machine cuts the feed according to its length and performs preliminary bending into a U shape;

[0020] S3. The staff puts the U-shaped steel strip into the merging machine and presses and fixes the steel strip through the pressing equipment;

[0021] S4. The staff rotates the screw rod so that the screw rod drives the straightening equipment to calibrate the steel belt;

[0022] S5. The bending machine bends the steel strip for the second time, and the spot welding machine welds the folded steel strip head.

[0023] After adopting the above technical solution, the beneficial effects of the present invention are:

[0024] 1. The present invention adds a design for secondary bending and calibration of the steel strip, fixes the U-shaped steel strip through the coordinated use of the cylinder and the gas rod with the push rod and the pressure plate, and straightens the bent steel strip through the coordinated use of the turntable and the screw with the guide straightening block and the movable plate. After the secondary bending is combined with the spot welding machine, the qualified rate of the product in the length direction is improved to meet the customer's requirement of a tolerance band of 0.5 mm. By combining the existing secondary bending with the spot welding machine, the personnel of the two processes can be combined into one process, thereby reducing the personnel cost.

[0025] 2. The present invention replaces the OP10 blanking process with a partial design of OP20 and OP30, and changes the method of drilling first and then spot welding in OP10 to resistance spot welding, which is the most widely used method in automobile body welding. A strong current passes through the contact point of the weldment in a short time, generating resistance heat to melt the metal at the contact point and form a weld point, thereby reducing the cost of consumables in this process and the scrapping of semi-finished products caused by continuous punching due to the wear of the punch needle. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0027] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the special machine combining the steel strip secondary bending machine and the spot welding machine according to the present invention.

[0028] Figure 2 The invention is a special machine for combining the steel strip secondary bending and spot welding machine Figure 1 Middle B is an enlarged structural diagram.

[0029] Figure 3 The invention is a special machine for combining the steel strip secondary bending and spot welding machine Figure 1 A is an enlarged view of the structure.

[0030] Description of reference numerals:

[0031] 1. Workbench; 2. Steel strip straightening mechanism; 21. Fixed frame; 22. Screw rod; 23. Turntable; 24. Moving plate; 25. Guide straightening block; 3. Steel strip secondary bending mechanism; 31. Rotating plate; 32. Rotating rod; 33. Bending rod; 34. Guide rod; 4. Steel strip clamping mechanism; 41. Cylinder; 42. Gas rod; 43. Push rod; 44. Pressing plate; 5. Spot welding machine. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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.

[0033] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0034] At the same time, the meaning of "and / or" or "and / or" appearing in the full text includes three options. Taking "A and / or B" as an example, it includes option A, or option B, or a option in which both A and B are satisfied.

[0035] In addition, in the present invention, descriptions such as "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0036] Example 1

[0037] like Figure 1 As shown, this embodiment provides a special machine for combining a steel strip secondary bending and a spot welding machine. The special machine for combining a steel strip secondary bending and a spot welding machine comprises a workbench 1, a steel strip straightening mechanism 2 is fixedly installed on the top of the workbench 1, a steel strip secondary bending mechanism 3 is arranged on the top of the workbench 1 and away from the steel strip straightening mechanism 2, and a steel strip pressing mechanism 4 is arranged on the top of the workbench 1 and away from the steel strip straightening mechanism 2;

[0038] The steel belt straightening mechanism 2 comprises a fixed frame 21 , the bottom of which is fixedly connected to the top of the workbench 1 , a screw rod 22 is rotatably mounted on the inner surface of the fixed frame 21 , and a turntable 23 is fixedly mounted on the right end of the screw rod 22 .

[0039] like Figure 1 As shown, the steel strip straightening mechanism 2 also includes a movable plate 24, the bottom of which is slidably connected to the top of the workbench 1, and a guide straightening block 25 is fixedly installed on the top of the movable plate 24, and the inner surface of the guide straightening block 25 is threadedly connected to the outer surface of the screw rod 22.

[0040] like Figure 1 and Figure 2 As shown together, the steel strip secondary bending mechanism 3 includes a rotating plate 31, the bottom of the rotating plate 31 is rotatably connected to the inner surface of the workbench 1 through a driving device, a rotating rod 32 is fixedly installed on the top of the rotating plate 31, and a bending rod 33 is arranged at the top of the rotating plate 31 and away from the rotating rod 32.

[0041] like Figure 1 and Figure 2 As shown together, the steel strip secondary bending mechanism 3 further includes a guide rod 34 , and the bottom end of the guide rod 34 is fixedly connected to the top of the rotating plate 31 .

[0042] like Figure 1 and Figure 3 As shown together, the steel belt pressing mechanism 4 includes a cylinder 41, the bottom of the cylinder 41 is fixedly connected to the top of the workbench 1, the output end of the cylinder 41 is fixedly installed with a gas rod 42 through a piston, and the front end of the gas rod 42 is fixedly installed with a push rod 43.

[0043] like Figure 1 and Figure 3 As shown together, the steel strip pressing mechanism 4 further includes a pressing plate 44 , the bottom of which is fixedly connected to the top of the workbench 1 .

[0044] like Figure 1 As shown, a spot welder 5 is arranged on the top of the workbench 1 and away from the steel strip secondary bending mechanism 3 .

[0045] In this embodiment, the staff puts the steel strip that has been preliminarily folded on the workbench 1, and the cylinder 41 drives the push rod 43 through the gas rod 42 to push the three sides of the steel strip onto the pressure plate 44 to fix it. Then the staff rotates the turntable 23, and the turntable 23 drives the guide straightening block 25 to move through the screw rod 22, and the guide straightening block 25 drives the moving plate 24 to move, so that the two groups of straightening devices composed of four guide straightening blocks 25 are moved to straighten the two sides of the steel strip. Then the driver in the workbench 1 drives the rotating plate 31 to rotate, and the rotating plate 31 drives the bending rod 33 and the guide rod 34 to rotate, so that the bending rod 33 and the guide rod 34 rotate around the rotating rod 32 as the center, and the steel strip is bent twice. Then the main welding cylinder drives the spot welding machine 5 to weld. After welding is completed, the welding clamp is released to complete the welding process.

[0046] Example 2

[0047] A special machine for secondary bending and welding of steel strips, steps of a method for combining secondary bending and spot welding of steel strips:

[0048] S1. The steel strip raw material is flattened and placed into the bending machine;

[0049] S2, the bending machine cuts the feed according to its length and performs preliminary bending into a U shape;

[0050] S3. The staff puts the U-shaped steel strip into the merging machine and presses and fixes the steel strip through the pressing equipment;

[0051] S4. The staff rotates the screw rod so that the screw rod drives the straightening equipment to calibrate the steel belt;

[0052] S5. The bending machine bends the steel strip for the second time, and the spot welding machine welds the folded steel strip head.

[0053] In this embodiment, the spot welding station process hole of the OP10 blanking process is cancelled, and the resistance welding method in OP20 and OP30 is used to directly weld the steel strip to avoid the problem of high scrap rate caused by wear of the punching needle due to the protruding punching holes.

[0054] It should be understood that the purpose of these embodiments is only to illustrate the present invention and is not intended to limit the protection scope of the present invention. In addition, it should also be understood that after reading the technical content of the present invention, those skilled in the art can make various changes, modifications and / or variations to the present invention, and all of these equivalent forms also fall within the protection scope defined by the appended claims of this application.

Claims

1. A special machine for combining a steel strip secondary bending machine and a spot welding machine, comprising a workbench (1), characterized in that: A steel strip straightening mechanism (2) is fixedly installed on the top of the workbench (1), a steel strip secondary bending mechanism (3) is arranged on the top of the workbench (1) and away from the steel strip straightening mechanism (2), and a steel strip pressing mechanism (4) is arranged on the top of the workbench (1) and away from the steel strip straightening mechanism (2); The steel strip straightening mechanism (2) comprises a fixed frame (21), the bottom of the fixed frame (21) is fixedly connected to the top of the workbench (1), a screw rod (22) is rotatably mounted on the inner surface of the fixed frame (21), and a turntable (23) is fixedly mounted on the right end of the screw rod (22).

2. The steel strip secondary bending and spot welding combined machine according to claim 1 is characterized by: The steel strip straightening mechanism (2) further comprises a movable plate (24), the bottom of which is slidably connected to the top of the workbench (1), and a guide straightening block (25) is fixedly mounted on the top of the movable plate (24), the inner surface of which is threadedly connected to the outer surface of the screw rod (22).

3. The steel strip secondary bending and spot welding combined machine according to claim 1 is characterized by: The steel strip secondary bending mechanism (3) comprises a rotating plate (31), the bottom of which is rotatably connected to the inner surface of the workbench (1) via a driving device, a rotating rod (32) is fixedly mounted on the top of the rotating plate (31), and a bending rod (33) is arranged at the top of the rotating plate (31) and away from the rotating rod (32).

4. The steel strip secondary bending and spot welding combined machine according to claim 1 is characterized by: The steel strip secondary bending mechanism (3) further comprises a guide rod (34), the bottom end of which is fixedly connected to the top of the rotating plate (31).

5. The steel strip secondary bending and spot welding combined machine according to claim 1 is characterized by: The steel belt pressing mechanism (4) comprises a cylinder (41), the bottom of which is fixedly connected to the top of the workbench (1), an air rod (42) is fixedly mounted on the output end of the cylinder (41) via a piston, and a push rod (43) is fixedly mounted on the front end of the air rod (42).

6. The steel strip secondary bending and spot welding combined machine according to claim 1 is characterized by: The steel belt pressing mechanism (4) further comprises a pressing plate (44), the bottom of which is fixedly connected to the top of the workbench (1).

7. The steel strip secondary bending and spot welding combined machine according to claim 1 is characterized by: A spot welder (5) is arranged on the top of the workbench (1) and away from the steel strip secondary bending mechanism (3).

8. A special machine for secondary bending and welding of steel strips, characterized by: The steps of the method for combining secondary bending and spot welding of a steel strip as described in any one of claims 1 to 7: S1. The steel strip raw material is flattened and placed into the bending machine; S2, the bending machine cuts the feed according to its length and performs preliminary bending into a U shape; S3. The staff puts the U-shaped steel strip into the merging machine and presses and fixes the steel strip through the pressing equipment; S4. The staff rotates the screw rod so that the screw rod drives the straightening equipment to calibrate the steel belt; S5. The bending machine bends the steel strip for the second time, and the spot welding machine welds the folded steel strip head.

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