Fixing clamp for furnace door welding workpiece

Abstract

The utility model relates to the technical field of workpiece clamps, in particular to a fixing clamp for a furnace door welding workpiece, which comprises a support frame for stably supporting the welding work of the workpiece, a moving frame which is connected to the support frame in a sliding manner and is used for conveying the workpiece, and fixing frames which are arranged at two ends of the moving frame and are used for fixedly mounting the workpiece, the fixing frame is further connected with a first clamping mechanism used for clamping a workpiece in the forward direction and a second clamping mechanism used for clamping the workpiece in the reverse direction. The first clamping mechanisms are arranged at the two ends of the fixing frame, and first positioning assemblies used for limiting the positions of workpieces are correspondingly arranged below the first clamping mechanisms. The second clamping mechanism is arranged on one side of the first clamping mechanism side by side, and a second positioning assembly used for limiting the position of the workpiece is correspondingly arranged below the second clamping mechanism. The clamping device can stably clamp the workpieces which are arranged in the forward and reverse directions, and can quickly position the workpieces through the first positioning assembly and the second positioning assembly, so that the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of workpiece clamps, in particular to a fixing clamp for furnace door welding workpieces. Background Art

[0002] Annealing furnaces are generally used in the annealing process of workpieces, wherein the annealing furnace door is usually opened automatically to control the entry and exit of the workpieces, and in the manufacturing process of the furnace door, the furnace door generally adopts a hollow structure, by splicing two identical sheet metal workpieces one positive and one negative, and welding at the splicing position to form a relatively sealed door body; and in the welding process, it is usually necessary to clamp and fix the workpiece to be welded to prevent the workpiece from deviating during the welding process, which may lead to unsatisfactory welding effect, and further may affect the sealing effect of the furnace door.

[0003] At present, the patent with announcement number CN206273470U on the market discloses a welding workpiece fixing fixture, which places the workpiece on the work platform and drives the clamping plate to slide on the guide rod by driving the cylinder to achieve the effect of clamping the workpiece, thereby improving the welding stability and accuracy of the workpiece and achieving the qualified rate of the product. The fixing fixture has a simple structure, scientific convenience, high degree of automation, flexible adjustment, and reliable fixing, which solves the problem of fixing the welding workpiece well. However, the following problems still exist when using this fixing fixture for welding:

[0004] 1) The fixing fixture can only be used for small workpieces. It is difficult to clamp and fix large workpieces, and it is easy to cause inaccurate positioning, affecting the welding effect;

[0005] 2) Some workpieces require welding not only on the front side but also on the back side. When the fixed fixture is used for clamping, the workpiece can only be welded on a single side and cannot meet multiple welding requirements. Utility Model Content

[0006] In order to solve the technical defects raised in the above-mentioned background technology, the purpose of the utility model is to provide a fixing clamp for furnace door welding workpieces, aiming to solve the problems of inaccurate positioning, poor clamping effect and high manual labor intensity of the fixing clamp in the prior art. The free movement of the welding workpiece is achieved by setting a sliding component, and a clamping mechanism is set to quickly position and clamp the workpiece, thereby improving the welding work efficiency.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A fixing fixture for welding workpieces of furnace doors, comprising a support frame for stably supporting the workpiece welding operation, a mobile frame slidably connected to the support frame for conveying the workpiece, and a fixed frame arranged at both ends of the mobile frame for fixing and installing the workpiece; characterized in that the fixed frame is also connected with a first clamping mechanism for positively clamping the workpiece and a second clamping mechanism for reversely clamping the workpiece; the first clamping mechanism is arranged at both ends of the fixed frame, and a first positioning assembly for limiting the position of the workpiece is correspondingly arranged below the first clamping mechanism, the first positioning assembly comprises a first positioning block, a first L-shaped pad and a first sheet metal part, the first positioning block and the workpiece are connected to each other The parts are fixedly connected by locking screws; the top of the first L-shaped pad abuts against the workpiece; the first sheet metal part is located between the first clamping block and the first L-shaped pad; the second clamping mechanism is arranged in parallel on one side of the first clamping mechanism, and a second positioning component for limiting the position of the workpiece is correspondingly arranged below the second clamping mechanism, the second positioning component includes a second positioning block, a second L-shaped pad and a second sheet metal part, and a third clamping mechanism for auxiliary clamping of the workpiece is arranged on one side of the second positioning block; the second L-shaped pad is fixedly connected to the workpiece by locking screws; the second sheet metal part is located between the second positioning block and the third clamping mechanism.

[0009] Preferably, the first clamping mechanism includes a first articulated seat, a first clamping cylinder and a first clamping rod, the first articulated seat is fixed to the top of the fixed frame, and the first articulated seat is respectively articulated to the first clamping cylinder and the first clamping rod, the output end of the first clamping cylinder is articulated to the first clamping rod, and one end of the first clamping rod is fixed with a first clamping block.

[0010] Preferably, the second clamping mechanism includes a second articulated seat, a second clamping cylinder and a second clamping rod, the second articulated seat is fixed to the top of the fixed frame, and the second articulated seat is respectively hinged to the second clamping cylinder and the second clamping rod, the output end of the second clamping cylinder is hinged to the second clamping rod, and one end of the second clamping rod is fixed with a second clamping block.

[0011] Preferably, the third clamping mechanism includes a third articulated seat, a third clamping cylinder and a third clamping rod. The third articulated seat is fixed to the bottom end of the fixed frame, and the third articulated seat is hinged to the first clamping rod. The output end of the third clamping cylinder is hinged to the third clamping rod, and one end of the third clamping rod is fixed with a third clamping block.

[0012] Preferably, a sliding component for adjusting the welding position of the workpiece is provided between the support frame and the connecting frame, one end of the sliding component is connected to a driving source, and under the driving action of the driving source, the movable frame performs a linear horizontal motion along the support frame.

[0013] Preferably, the sliding assembly includes a linear slide rail, a guide plate and a rotating telescopic shaft, the linear slide rail is connected to the top of the fixed frame, the guide plate is slidably connected to the linear slide rail, and the top of the guide plate is fixed to the movable frame; one end of the rotating telescopic shaft is transmission connected to the output end of the driving source, and the other end is fixed to the movable frame.

[0014] Preferably, both ends of the linear slide rail are provided with limiting members, the limiting members are in a Z-shaped structure, and the limiting members are fixedly connected to the support frame.

[0015] Preferably, the movable frame is also provided with a plurality of support frames for supporting workpieces, and the support frames are arranged at the same height as the fixed frame.

[0016] In summary, the beneficial effects of the utility model are:

[0017] 1. The utility model provides a first clamping mechanism for positive clamping and a second clamping mechanism for reverse clamping at both ends of the workpiece, and utilizes the first clamping mechanism and the second clamping mechanism to limit and clamp the workpiece, which can not only accurately position the workpiece, but also enable the workpiece to be welded on the front and back sides at the same time, thereby speeding up production efficiency and improving the welding effect.

[0018] 2. The utility model precisely positions two oppositely placed workpieces by setting a first positioning component and a second positioning component so that the welding position of the joint is exposed on the outer surface. It can not only accurately position the workpieces, but also enable the workpieces to be welded on the front and back sides at the same time, thereby speeding up production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a fixing fixture for welding workpieces for furnace doors of the utility model;

[0020] Figure 2 This is a front view of a fixing fixture for welding workpieces for furnace doors of the utility model;

[0021] Figure 3 This is a structural schematic diagram of the utility model from another side of the perspective of the fixing fixture for welding workpieces of furnace doors;

[0022] Figure 4 It is a structural schematic diagram of the clamping mechanism in the utility model.

[0023] Description of reference numerals in the figures:

[0024] 1. Support frame; 2. Mobile frame; 3. Fixed frame; 4. Clamping mechanism; 41. First clamping mechanism; 411. First hinge seat; 412. First clamping cylinder; 413. First clamping rod; 414. First clamping block; 42. Second clamping mechanism; 421. Second hinge seat; 422. Second clamping cylinder; 423. Second clamping rod; 424. Second clamping block; 43. Third clamping mechanism; 431. Third hinge seat; 432. Third Clamping cylinder; 433, third clamping rod; 434, third clamping block; 5, first positioning assembly; 51, first positioning block; 52, first L-shaped pad; 53, first sheet metal; 6, second positioning assembly; 61, second positioning block; 62, second L-shaped pad; 63, second sheet metal; 7, sliding assembly; 71, linear slide rail; 72, guide plate; 73, driving cylinder; 74, limit member; 75, telescopic shaft; 8, supporting bracket; 9, workpiece. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.

[0026] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0027] In the description of the utility model, if there is a word description such as "several", it means one or more, and the meaning of "more" is two or more. Greater than, less than, and more than are understood to exclude the number itself, and above, below, and within are understood to include the number itself. If there is a description of the first, second, and third, it is only used to distinguish the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0028] The following is combined with Figure 1-4 , an embodiment of a fixing fixture for welding a furnace door workpiece of the utility model is further described in detail.

[0029] A fixing fixture for furnace door welding workpieces, such as Figure 1 , 2 As shown in Figure 4, it includes a support frame for stably supporting the welding work of the workpiece, a mobile frame slidably connected to the support frame for conveying the workpiece, and a fixed frame arranged at both ends of the mobile frame for fixing and installing the workpiece; the fixed frame is also connected to a first clamping mechanism for positively clamping the workpiece and a second clamping mechanism for reversely clamping the workpiece; the first clamping mechanism is arranged at both ends of the fixed frame, and a first positioning assembly for limiting the position of the workpiece is correspondingly arranged below the first clamping mechanism, the first positioning assembly includes a first positioning block, a first L-shaped pad and a first sheet metal part, and the first positioning block and the workpiece are locked by The screws are fixedly connected; the top end of the first L-shaped pad abuts against the workpiece; the first sheet metal is located between the first clamping block and the first L-shaped pad; the second clamping mechanism is arranged in parallel on one side of the first clamping mechanism, and a second positioning component for limiting the position of the workpiece is correspondingly arranged below the second clamping mechanism, the second positioning component includes a second positioning block, a second L-shaped pad and a second sheet metal, and a third clamping mechanism for auxiliary clamping of the workpiece is arranged on one side of the second positioning block; the second L-shaped pad is fixedly connected to the workpiece by a locking screw; the second sheet metal is located between the second positioning block and the third clamping mechanism.

[0030] Specifically, the workpiece 9 is a sheet metal bending structure, and a plurality of positioning holes are equidistantly provided on its two side flanks. When fixing the workpiece 9, the front side of one of the workpieces 9 and the back side of the other workpiece 9 can be fixed respectively by the first clamping mechanism 41 and the second clamping mechanism 42; in the process of clamping and fixing, the first positioning component 5 and the second positioning component 6 are positioned by the first clamping structure and the second clamping mechanism 424 respectively. The first positioning component 5 can adapt to the workpiece 9 placed forward, and the second positioning component 6 can adapt to the workpiece 9 placed reversely, and cooperate with the third clamping mechanism 434 for positioning, so that the joint between the two oppositely placed workpieces 9 is exposed on the outer surface, which is convenient for welding. The fixing fixture of the utility model can not only accurately position the workpiece 9, but also enable the workpiece 9 to be welded on the front and back sides at the same time, thereby speeding up production efficiency and improving its welding effect.

[0031] Among them, the first clamping mechanism 41 includes a first hinged seat 411, a first clamping cylinder 412 and a first clamping rod 413. The first hinged seat 411 is fixedly connected to the top of the fixed frame 3, and the first hinged seat 411 is hinged to the first clamping cylinder 412 and the first clamping rod 413 respectively. The output end of the first clamping cylinder 412 is hinged to the first clamping rod 413, and one end of the first clamping rod 413 is fixedly connected to the first clamping block 414. When the first clamping mechanism 41 positions the workpiece 9 set in the forward direction, it is first fixed to the side of the workpiece 9 through the first positioning block 51, and then the first L-shaped pad 52 is set at the bottom of the workpiece 9, and Limit blocks are set on both sides of the L-shaped pad 52 to fix its position, so that during the clamping process of the workpiece 9, the workpiece 9 can be inserted into the gap between the first L-shaped pad 52 and the first clamping block 414; finally, the first sheet metal part 53 is adapted to the workpiece 9, and the first sheet metal part 53 is also set in a positive direction, the purpose is to fit with the workpiece 9, and then limit the two ends of the workpiece 9. After the workpiece 9 is positioned, the first clamping mechanism 41 uses the first clamping cylinder 412 to drive the first clamping rod 413 along the hinge point of the first hinge seat 411 to complete the up and down clamping action, so that the workpiece 9 is firmly fixed in the clamp, thereby facilitating the welding work of the workpiece 9.

[0032] The second clamping mechanism 42 includes a second hinged seat 421, a second clamping cylinder 422 and a second clamping rod 423. The second hinged seat 421 is fixed to the top of the fixing frame 3, and the second hinged seat 421 is hinged to the second clamping cylinder 422 and the second clamping rod 423 respectively. The output end of the second clamping cylinder 422 is hinged to the second clamping rod 423, and one end of the second clamping rod 423 is fixed to the second clamping block 424. When the second clamping mechanism 42 positions the reversely placed workpiece 9, it is first fixed to the side of the workpiece 9 through the second positioning block 61, and then the second L-shaped pad 62 is set at the bottom of the workpiece 9, and at the second L-shaped pad 62. Limit blocks are set on both sides of the pad 62 to fix its position, so that during the clamping process of the workpiece 9, the workpiece 9 can be inserted into the gap between the second positioning block 61 and the third clamping mechanism 434; finally, the second sheet metal 63 is adapted to the workpiece 9, and the second sheet metal 63 is also inverted, the purpose is to fit with the workpiece 9, and then limit the two ends of the workpiece 9. After the workpiece 9 is positioned, the second clamping mechanism 42 uses the second clamping cylinder 422 to drive the second clamping rod 423 along the hinge point of the second hinge seat 421 to complete the up and down clamping action, so that the workpiece 9 is firmly fixed in the clamp, thereby facilitating the welding work of the workpiece 9.

[0033] In this embodiment, if Figure 4As shown, the third clamping mechanism 434 includes a third articulated seat 431, a third clamping cylinder 432 and a third clamping rod 433. The third articulated seat 431 is fixed to the bottom end of the fixed frame 3, and the third articulated seat 431 is hinged to the third clamping rod 433. The output end of the third clamping cylinder 432 is hinged to the third clamping rod 433, and one end of the third clamping rod 433 is fixed to the third clamping block 434.

[0034] Specifically, the third clamping mechanism 434 and the second clamping mechanism 42 act together on the same workpiece 9, and the third articulated seat 431 thereof is arranged at the bottom end of the fixing frame 3, and a through hole is opened on the fixing frame 3, so that one end of the third clamping rod 433 passes through the through hole and is hinged to the third clamping cylinder 432, and at the same time, the middle position of the third clamping rod 433 is hinged to the third articulated seat 431, and the other end of the third clamping rod 433 is fixedly connected to the third clamping block 434, so that when clamping the workpiece 9, the third clamping rod 433 moves up and down along the third articulated seat 431 under the action of the third clamping cylinder 432, thereby completing the clamping and fixation of the workpiece 9.

[0035] In this embodiment, a sliding assembly 7 for adjusting the welding position of the workpiece 9 is arranged between the support frame 1 and the connecting frame, and one end of the sliding assembly 7 is connected to a driving source. Under the driving action of the driving source, the movable frame 2 makes a linear horizontal motion along the support frame 1; wherein, the sliding assembly 7 includes a linear slide rail 71, a guide plate 72 and a rotating telescopic shaft 75, wherein the linear slide rail 71 is connected to the top end of the fixed frame 3, the guide plate 72 is slidably connected to the linear slide rail 71, and the top end of the guide plate 72 is fixed to the movable frame 2; one end of the rotating telescopic shaft 75 is transmission-connected to the output end of the driving source, and the other end is fixed to the movable frame 2.

[0036] Specifically, the linear slide 71 is arranged in parallel along the length direction of the support frame 1, a plurality of guide plates 72 are arranged, and a guide sleeve is arranged at the bottom of the guide plate 72, the guide sleeve is slidably connected to the linear slide 71, the top of the guide plate 72 is fixedly connected to the movable frame 2, the driving source 73 is arranged at the middle position of the linear slide 71, and the driving source 73 is fixed on the support frame 1, and the driving source 73 can adopt a driving cylinder, a driving unit and other driving parts; one end of the rotating telescopic shaft 75 is fixedly connected to the movable frame 2 through a connecting block, and the other end of the rotating telescopic shaft 75 is transmission-connected to the output end of the driving source 73. Under the driving action of the driving source 73, the rotating telescopic shaft 75 is freely retracted, thereby pulling the movable frame 2 to move laterally along the linear slide 71, thereby facilitating the welding equipment to weld the workpiece 9 at the required welding position; thereby reducing the labor intensity of manual labor and improving its welding efficiency and scope of application.

[0037] It is worth mentioning that limit members are provided at both ends of the linear slide rail, the limit members are in a Z-shaped structure, and the limit members are fixedly connected to the support frame; the setting of the limit members can limit the sliding stroke of the mobile frame and avoid the risk of the mobile frame falling.

[0038] In order to further prevent the workpiece 9 from bending in the middle during use, the utility model also provides a plurality of support frames 8 for supporting the workpiece 9 on the movable frame 2, and the support frames 8 are arranged at the same height as the fixed frame 3; the support frames 8 can effectively decompose and support the gravity of the workpiece 9.

[0039] The working principle of this utility model:

[0040] The workpiece 9 with welding is placed on the fixed frame 3, and the two ends of the workpiece 9 are limited and fixed by the first positioning component 5 and the second positioning component 6 respectively, wherein the first positioning block 51 and the second positioning block 61 fix the side of the workpiece 9, the first L-shaped pad 52 and the second L-shaped pad 62 are respectively abutted against the bottom of the workpiece 9 for supporting the workpiece 9, and the first sheet metal part 53 and the second sheet metal part 63 are fixed at the two ends of the workpiece 9 for limiting the welding position of the workpiece 9; and the first clamping mechanism 41 and the second clamping mechanism 42 are fixed to the positioning holes opened on the workpiece 9 through the first clamping rod 413 and the second clamping rod 423, and the first clamping block 414, the second clamping block 424 and the workpiece 9 are locked by fastening bolts respectively to prevent the workpiece 9 from shifting during the welding process, and after the workpiece 9 is clamped and fixed, the sliding component 7 slides the movable frame 2 along the length direction of the support frame 1, so as to cooperate with the welding machine to weld the workpiece 9.

[0041] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A fixing fixture for welding workpieces of furnace doors, comprising a support frame for stably supporting the workpieces for welding, a moving frame slidably connected to the support frame for conveying the workpieces, and a fixing frame arranged at both ends of the moving frame for fixing and installing the workpieces; characterized in that: The fixing frame is also connected with a first clamping mechanism for clamping the workpiece in a positive direction and a second clamping mechanism for clamping the workpiece in a reverse direction; The first clamping mechanism is arranged at both ends of the fixing frame, and a first positioning assembly for limiting the position of the workpiece is correspondingly arranged below the first clamping mechanism, the first positioning assembly comprises a first positioning block, a first L-shaped pad and a first sheet metal component, the first positioning block is fixedly connected to the workpiece by a locking screw; the top end of the first L-shaped pad abuts against the workpiece; the first sheet metal component is located between the first clamping block and the first L-shaped pad; The second clamping mechanism is arranged in parallel on one side of the first clamping mechanism, and a second positioning component for limiting the position of the workpiece is correspondingly arranged below the second clamping mechanism, the second positioning component includes a second positioning block, a second L-shaped pad and a second sheet metal part, and a third clamping mechanism for auxiliary clamping of the workpiece is arranged on one side of the second positioning block; the second L-shaped pad is fixedly connected to the workpiece by a locking screw; the second sheet metal part is located between the second positioning block and the third clamping mechanism.

2. The fixing fixture for furnace door welding workpiece according to claim 1, characterized in that: The first clamping mechanism includes a first articulated seat, a first clamping cylinder and a first clamping rod. The first articulated seat is fixed to the top of the fixed frame, and the first articulated seat is respectively articulated to the first clamping cylinder and the first clamping rod. The output end of the first clamping cylinder is articulated to the first clamping rod, and one end of the first clamping rod is fixed with a first clamping block.

3. The fixing fixture for furnace door welding workpiece according to claim 2, characterized in that: The second clamping mechanism includes a second articulated seat, a second clamping cylinder and a second clamping rod. The second articulated seat is fixed to the top of the fixed frame, and the second articulated seat is respectively articulated to the second clamping cylinder and the second clamping rod. The output end of the second clamping cylinder is articulated to the second clamping rod, and one end of the second clamping rod is fixed with a second clamping block.

4. The fixing fixture for furnace door welding workpiece according to claim 3, characterized in that: The third clamping mechanism includes a third articulated seat, a third clamping cylinder and a third clamping rod. The third articulated seat is fixed to the bottom end of the fixed frame, and the third articulated seat is hinged to the first clamping rod. The output end of the third clamping cylinder is hinged to the third clamping rod, and one end of the third clamping rod is fixed to a third clamping block.

5. The fixing fixture for furnace door welding workpiece according to claim 4, characterized in that: A sliding assembly for adjusting the welding position of the workpiece is arranged between the support frame and the connecting frame, one end of the sliding assembly is connected to a driving source, and under the driving action of the driving source, the moving frame performs a linear horizontal movement along the support frame.

6. The fixing fixture for furnace door welding workpiece according to claim 5, characterized in that: The sliding assembly includes a linear slide rail, a guide plate and a rotating telescopic shaft. The linear slide rail is connected to the top of the fixed frame, the guide plate is slidably connected to the linear slide rail, and the top of the guide plate is fixed to the movable frame; one end of the rotating telescopic shaft is transmission-connected to the output end of the driving source, and the other end is fixed to the movable frame.

7. The fixing fixture for furnace door welding workpiece according to claim 6, characterized in that: Both ends of the linear slide rail are provided with limiting members, the limiting members are in a Z-shaped structure, and the limiting members are fixedly connected to the support frame.

8. The fixing fixture for furnace door welding workpiece according to claim 1, characterized in that: The movable frame is also provided with a plurality of supporting frames for supporting workpieces, and the supporting frames are arranged at the same height as the fixed frame.

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