Automatic welding system suitable for engineering machinery cabin protective net

Abstract

The utility model discloses an automatic welding system suitable for a protective net of an engineering machinery cabin, which comprises a flexible workstation mounting base used for fixing a welding robot and two welding tool turnover systems; the welding robot is arranged between the two welding tool overturning systems; the two welding tool overturning systems are used for completing overturning of the protective net point fixing welding tool and the protective net final welding tool correspondingly, and welding of the welding robot is facilitated; the protective net point fixing and welding tool is used for positioning and fixing all frames, transverse reinforcing ribs, longitudinal rib plates and lug plates of a protective net, and spot welding of the protective net can be conveniently completed through a welding robot. The protective net final welding tool is used for positioning and fixing the protective net subjected to spot welding, and a welding robot can complete full welding of the protective net conveniently. The system can improve the welding efficiency.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of automatic welding equipment, especially a kind of engineering machinery cabin protective net automation welding system. BACKGROUND

[0002] Manual welding tooling mode is widely used in the production and processing of cabin protective net in engineering machinery, and welding protective net needs welder to manually operate tooling fixture to press workpiece tightly on welding platform, and it needs to continuously adjust tooling through gasket to ensure the size of product is qualified, and workpiece can only be fixed by spot welding when product is welded, and the product welded by spot welding needs to be hoisted to welding platform to complete final welding. Especially, long-time use can cause tooling fixture to be damaged, resulting in large deformation of product, thereby affecting product quality and reducing production efficiency, therefore, it is particularly important to adopt a kind of high automation, integration, convenience, speediness and efficiency to solve the problems of long time consumption, low efficiency and product deformation in welding processing of protective net. SUMMARY

[0003] The utility model aims at providing a kind of engineering machinery cabin protective net automation welding system to solve the potential product quality consistency and stability problem when using tooling fixture manually, while ensuring welding workpiece precision control and improving welding efficiency.

[0004] The technical solution for achieving the purpose of the utility model is as follows:

[0005] A kind of engineering machinery cabin protective net automation welding system, comprising:

[0006] Flexible workstation mounting base is used to fix welding robot and two welding tooling turnover systems;

[0007] Welding robot is arranged between two welding tooling turnover systems, and is used to complete spot welding and full welding of protective net;

[0008] Two welding tooling turnover systems are respectively used to complete turnover of protective net spot welding tooling and protective net final welding tooling, to facilitate welding of welding robot;

[0009] Protective net spot welding tooling is used for positioning and fixing of each frame, transverse reinforcing rib, longitudinal rib plate and ear plate of protective net, to facilitate welding robot to complete spot welding of protective net;

[0010] Protective net final welding tooling is used for positioning and fixing of protective net completed by spot welding, to facilitate welding robot to complete full welding of protective net.

[0011] Compared with prior art, the utility model has the following advantages:

[0012] (1) The production efficiency is improved. The welding mode and the welding path can be flexibly adjusted according to production requirements, the unstable phenomena such as the skills and experience of traditional manual welding operators, slow operation speed and personnel flow are avoided, the production cycle is greatly shortened, the stability of products is ensured, and the production efficiency is improved. In addition, the welding platform is used in cooperation with the robot to realize simultaneous operation of left and right stations, and the overall production efficiency is further improved.

[0013] (2) The cost is saved and the product quality is improved. The labor cost is saved, and the cost of product scrapping caused by welding quality, workpiece deformation and the like due to human factors is avoided. At the same time, through the high-precision positioning system and the adjusting device, the error caused by deformation of a welding tooling platform or inaccuracy of a positioning clamp in traditional manual welding can be effectively eliminated, high-precision welding operation is ensured, and the product quality is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a general appearance view of the utility model;

[0015] Figure 2 It is a general layout view of the utility model;

[0016] Figure 3 It is a spot welding tooling appearance view of the utility model;

[0017] Figure 4 It is a spot welding tooling assembly view of the utility model;

[0018] Figure 5 It is a final welding tooling appearance view of the utility model;

[0019] Figure 6 It is a final welding tooling assembly view of the utility model;

[0020] Figure 7 It is a platform support base structure distribution view of the utility model;

[0021] Figure 8 It is a protective net structure view of the utility model. DETAILED DESCRIPTION

[0022] The utility model will be further described below in combination with the drawings and specific embodiments, the illustrative embodiments of the utility model and the description are used to explain the utility model, but not as a limitation on the utility model.

[0023] The protective net 6 comprises a protective net frame 102, a convex frame 119, a long bent frame 113, a long frame 122, a first transverse reinforcing rib 111, a second transverse reinforcing rib 112, a third transverse reinforcing rib plate 116 and six longitudinal rib plates 120; wherein the protective net frame 102, the convex frame 119, the long bent frame 113 and the long frame 122 are welded into a quadrilateral frame, the protective net frame 102 is welded with a double-sided ear plate and a single-sided ear plate, the protective net frame 102 and the convex frame 119 are opposite, the long bent frame 113 and the long frame 122 are opposite, the six longitudinal rib plates 120 are welded and fixed in parallel between the protective net frame 102 and the convex frame 119, the first transverse reinforcing rib 111, the second transverse reinforcing rib 112 and the third transverse reinforcing rib plate 116 are welded and fixed between the long bent frame 113 and the long frame 122 and are welded and fixed with the six longitudinal rib plates 120.

[0024] For example Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 An automatic welding system for the protective net of the cabin body of the engineering machinery is shown in the drawings, which comprises a protective net point fixed welding tool 1, a protective net terminal welding tool 2, a welding tool overturning system 3, a flexible workstation mounting base 4 and a welding robot 5; the protective net point fixed welding tool 1 comprises a first tool clamp mounting platform 103, a double-ear plate air cylinder positioning clamp 101 fixed on the first tool clamp mounting platform 103, two frame air cylinder pressing clamps 104, two overturning platform connecting lugs 105, an air cylinder pushing clamp 106, a single-ear plate air cylinder positioning clamp 107, four welding platform legs 108, a double-ear plate air cylinder pressing clamp 109, two transverse reinforcing rib plate air cylinder pressing clamps 110, five baffle support seats 114 for supporting and positioning the long bent frame 113, three air cylinder pressing clamps 115, an edge block air cylinder clamp 117, a left edge block positioning clamp 118, a right edge block positioning clamp 121, ten air cylinder pressing clamps 123 for clamping the longitudinal rib plate 120, three support positioning baffles 124 for supporting and positioning the longitudinal rib plate 120, two air cylinder pressing clamps 125 for clamping the second transverse rib plate, five air cylinder positioning pressing clamps 126 for clamping the long frame 122, a single-ear plate air cylinder pressing clamp 127 and four independent air cylinder control boxes 128 each with six buttons.

[0025] The double-ear plate cylinder positioning fixture 101 fixes the double-ear plate on the protective net frame 102 through the bolt shaft, the protective net frame 102 is positioned and clamped through the support baffle on the first tool clamp mounting platform 103, and is used for placing the double-ear plate and the single-ear plate. The two frame cylinder pressing fixtures 104 fix the protective net frame 102 on the support baffle of the first tool clamp mounting platform 103 through the cylinder control button, the two turnover platform connecting lugs 105 are fixed symmetrically on the left and right sides of the first tool clamp mounting platform 103, and are used for connecting the welding tool turnover system 3, so that the welding machine can be kept horizontal during welding. The single-ear plate cylinder positioning fixture 107 uses the bolt to connect the frame 122 and the single-ear plate through hole, and the cylinder pushing fixture 106 fixes the single-ear plate on the protective net frame 102. The four welding platform supporting legs 108 are used for fixing the first tool clamp mounting platform 103, and are convenient to place. The double-ear plate pressing fixture 109 and the single-ear plate pressing fixture 127 are respectively used for pressing and fixing the positions of the double-ear plate and the single-ear plate, and after the fixing is completed, the welding robot 5 spot welds the three ear plates. The two transverse reinforcing rib plate cylinder pressing fixtures 110 are used for fixing the first transverse reinforcing rib 111, and after the fixing is completed, the welding robot 5 spot welds. The second transverse reinforcing rib 112 is fixed on the support seat through the two cylinder pressing fixtures 125. The long strip bending frame 113 is fixed on the plurality of baffle support seats 114 through the three cylinder pressing fixtures 115. The third transverse reinforcing rib plate 116 is also fixed through the cylinder pressing fixture. The edge block cylinder clamp 117 is used for fixing and welding the edge block small parts. The left edge block tool positioning clamping fixture 118 and the right edge block positioning clamping fixture 121 are used for supporting, positioning and clamping the convex-shaped frame 119. The three supporting and positioning baffle plates 124 are arranged in parallel on the first tool clamp mounting platform 103 and are supported at the bottoms of the six longitudinal rib plates 120, and are used for positioning and supporting the six longitudinal rib plates 120. The cylinder pressing fixture 123 fixes the longitudinal rib plate 120 on the supporting and positioning baffle plate 124. The cylinder positioning pressing fixture 126 is used for fixing the long strip-shaped frame 122. The four independent cylinder control boxes 128 each have six buttons, wherein there are different cylinder pressing and releasing buttons, which are used for quickly positioning spot welding during welding of the protective net workpiece, and a large amount of time is saved.

[0026] The protective net final welding welding tool 2 includes a second tool clamp base installation platform 202, a double-sided ear plate air cylinder positioning and pressing clamp 201 fixed on the second tool clamp base installation platform 202, two bottom frame air cylinder positioning clamps 203, two turnover platform connecting ears 204, a single-sided ear plate positioning and pressing clamp 205, four welding tool platform support legs 206, an air cylinder pressing clamp 207, six longitudinal rib plate air cylinder pressing positioning clamps 208, two air cylinder control button cabinets 209, five long strip frame air cylinder tool clamps 210, four air cylinder tool clamps 212, and six air cylinder pressing positioning tools 216. The double-sided ear plate air cylinder positioning tool clamp 201 is bolted on the welding tool installation platform 202 and is used for positioning the double-sided ear plate on the bottom frame. The double-sided ear plate is connected and limited through a pin shaft, so that the double-sided ear plate is fully welded. The air cylinder positioning clamp 203 is fixed on the welding tool installation platform 202 and is used for pressing the bottom frame. The turnover platform connecting ears 204 are symmetrically installed on the two sides of the second tool clamp base installation platform 202 and are connected with the welding tool turnover system 3 on the two sides through four reserved holes, so as to realize automatic turnover of the welding tool during welding. The single-sided ear plate positioning and pressing clamp 205 is fixed on the second tool clamp base installation platform 202 and is connected with the long strip frame through a pin shaft hole, so as to fix the position of the single-sided ear plate during full welding and prevent displacement. The four welding tool platform support legs 206 are connected and fixed with the second tool clamp base installation platform 202 through welding, so as to support the entire welding tool. The air cylinder pressing clamp 207 is used for pressing the long strip frame. The six longitudinal rib plate air cylinder pressing positioning clamps 208 are fixed on the middle lower and middle upper positions of the platform 202 and are used for pressing the six longitudinal rib plates to prevent the six longitudinal rib plates from being twisted and deformed during welding, so as to meet the quality requirements. The two air cylinder control button cabinets 209 are fixed on the side edges of the second tool clamp base installation platform 202 and are used for controlling the operation of the air cylinder tool clamps on the entire welding tool through pressing and releasing buttons. The five long strip frame air cylinder tool clamps 210 are fixed on the second tool clamp base installation platform 202 and are used for fixing the long strip frame to control the deformation amount of the long strip frame within a reasonable range during full welding. The four air cylinder tool clamps 212 are fixed on the second tool clamp base installation platform 202 and are used for pressing the convex-shaped frame 213 to prevent the convex-shaped frame 213 from being deformed too much and affecting the size of the protective net during full welding. The six air cylinder pressing positioning tools 216 are fixed on the welding platform 202 and are used for fixing the long strip bent frame 113 to prevent the product from being deformed due to thermal expansion and cold contraction of the weld during welding.

[0027] The flexible workstation mounting base 3 comprises four turnover devices 301, eight cylinder pin shaft connecting devices 302, four tray limiting blocks 303, four turnover mechanism supporting trays 304 and four turnover device fixing blocks 305; the flexible workstation mounting base 4 comprises a welding workstation transverse base 401, a welding workstation longitudinal base 402, a welding robot mounting platform 403 and a transverse base 404, the four turnover devices 301 are connected with the four turnover mechanism supporting trays 304 through the turnover device fixing blocks 305 at the end faces of the four turnover devices 301 by bolts, the eight cylinder pin shaft connecting devices 302 are connected with the through holes of the turnover platform connecting lugs 105 or the turnover platform connecting lugs 204 in each group of two, the automatic control welding tool is used, the two ends of the welding workstation transverse base 401 and the transverse base 404 are used for fixing the turnover devices 301, the welding robot mounting platform 403 is arranged in the middle of the welding workstation longitudinal base 402 and is used for fixing the welding robot 5, the welding workstation transverse base 401, the welding workstation longitudinal base 402 and the transverse base 404 form an H-shaped base, are fixed to the ground through ground nails and are used for mounting the four turnover devices and the welding robot mounting platform 403, so that stable work in the automatic welding process is ensured and quality and quantity are guaranteed.

[0028] The welding robot 5 comprises a robot body, a control system including a control cabinet and a man-machine exchange system, a control system, and auxiliary equipment, and the auxiliary equipment comprises a positioner system, a safety system, a cooling system and a protective gas system.

[0029] The specific steps in the actual production process of the utility model are as follows:

[0030] Positioning and fixing the long strip bending frame 113: the long strip bending frame 113 falls along the side surface of the four baffle supporting seats 114, falls on the cushion block on the baffle supporting seat 114, one end is attached to the positioning block on the baffle supporting seat 114, the side surface of the baffle supporting seat 114 has a magnet that can attract the long strip bending frame 113, and then the three cylinder pressing clamps 115 press the long strip bending frame 113;

[0031] Positioning and fixing the longitudinal rib plate 120: the longitudinal rib plate 120 is sequentially placed in the corresponding positioning baffle 124, falls on the positioning table surface of the positioning baffle 124 in the height direction, the end part is uniformly attached to the positioning surface of one side of the positioning baffle 124, is attached to the side of the positioning baffle 124 that has a magnet in the width direction, and each electromagnet is oppositely provided with a ball head plunger to tightly press the rib plate, and finally is pressed by the cylinder pressing clamp 123;

[0032] Positioning and fixing the protective net frame 102: The protective net frame 102 falls on the cushion of the positioning block provided on the first tool clamp mounting platform 103, one end adheres to the positioning block, and the side also adheres to the positioning block, and then the frame cylinder above the cushion presses the clamp 104 cylinder downward to press it tightly;

[0033] Positioning and fixing the ear plate one: The double-ear plate cylinder positioning clamp 101 positions the double-ear plate, single-ear plate, and protective net frame 102 through the bolt, and the double-ear plate cylinder pressing clamp 109 presses the double-ear plate and protective net frame 102 tightly;

[0034] Positioning and fixing the edge block one: After the two edge blocks one adhere to the two positioning surfaces on the first tool clamp mounting platform 103, they are inserted and fixed with the bolt,

[0035] Fixing the convex-shaped frame 119: The convex-shaped frame 119 long hole is aligned with the positioning pin of the left edge block tool positioning clamping clamp 118 and the right edge block positioning clamping clamp 121, falls on it, adheres to the positioning surface, and then uses the cylinder of the left edge block tool positioning clamping clamp 118 and the right edge block positioning clamping clamp 121 to press tightly;

[0036] Positioning and fixing the edge block two: The edge block two falls on the surface of the long strip frame 122, adheres to the positioning surface of the positioning block on the first tool clamp mounting platform 103 on both sides, and is attracted by the magnet on the positioning block, and is pressed tightly by the pressing block;

[0037] Positioning and fixing the edge block three: The positioning block three is pushed to the appropriate position in advance by the cylinder and fixed on the frame 119, the pin of the edge block three falls into the U-shaped groove of the positioning block, and the side adheres to the positioning block, and then uses the pressing block to press tightly;

[0038] Positioning and fixing the first, second, and third transverse reinforcing ribs 111, 112, and 116: The positioning methods of the first, second, and third transverse reinforcing ribs 111, 112, and 116 are consistent, and they fall on the respective positioning blocks, adhere to the positioning surface, and then use the cylinder pressing block of the corresponding clamp to press tightly or tightly;

[0039] Positioning and fixing the long strip frame 122: The long strip frame 122 falls on the positioning seat on the first tool clamp mounting platform 103, adheres to one end of the protective net frame 102 and the convex-shaped frame 119 on the side, adjusts the tightening screw of the positioning seat to make it adhere to the side of the long strip frame 122, and then pushes the cylinder positioning pressing clamp 126 to press tightly. Note that this positioning seat is a long hole, which can be adjusted appropriately according to the reverse deformation;

[0040] Positioning and fixing the ear plate two and the pin shaft: The single-ear plate cylinder positioning clamp 107 positions the single-ear plate and the round hole on the long strip frame 122 through the pin shaft, and the cylinder pushes the clamp 106 to press the single-ear plate and the protective net frame 102 tightly.

[0041] Positioning and fixing the edge block four: the edge block four is placed on the positioning block on the first fixture clamp mounting platform 103, one side is attached to the positioning surface of the positioning block, and the other side is attached to the long strip frame 122, and the ball head plunger can be clamped.

[0042] After the welding is completed, the robot welding start button is clicked to complete the spot welding operation according to the prepared program. After the spot welding operation is completed, the protective net product is placed into the final welding work, and the welding robot is also started to complete the final welding operation. After the welding is completed, all the fixtures are opened, the completed protective net is taken off from the fixture using the crane, and is moved to the welding platform for cleaning, grinding and slagging. After completion, correction is performed, and after completion, it is transferred to the three-coordinate size detection room for measurement work to ensure that the product is qualified for delivery to the customer.

Claims

1. An automated welding system for a protective mesh for a cabin of a construction machine, characterized in that, The utility model relates to a welding robot work station installation base and two welding tooling turnover systems. The welding robot is arranged between the two welding tooling turnover systems and is used for completing spot welding and full welding of the guard net. The two welding tooling turnover systems are respectively used for completing turnover of guard net spot welding tooling and guard net final welding tooling, facilitating welding of the welding robot. The guard net spot welding tooling is used for positioning and fixing the frame, the transverse reinforcing rib, the longitudinal rib plate and the ear plate of the guard net, facilitating the welding robot to complete spot welding of the guard net. The guard net final welding tooling is used for positioning and fixing the guard net after spot welding, facilitating the welding robot to complete full welding of the guard net. The first tooling clamp installation platform is symmetrically fixed with two turnover platform connecting lugs on the left and right sides, which are used for connecting the welding tooling turnover system.

2. An automated welding system for a protective screen of a cabin of a working machine according to claim 1, characterized in that, The first tooling clamp installation platform is fixed with four welding platform supporting legs. The guard net final welding tooling second tooling clamp base installation platform is fixed with a double-ear plate cylinder positioning and pressing clamp, two bottom frame cylinder positioning clamps, a single-ear plate positioning and pressing clamp, a cylinder pressing clamp, six longitudinal rib plate cylinder pressing positioning clamps, five long strip frame cylinder tooling clamps, four cylinder tooling clamps and six cylinder pressing positioning tools.

3. A cabin guard net automated welding system suitable for use in a working machine according to claim 2, characterized in that, ​ 4. A cabin guard net automated welding system suitable for use in a working machine according to claim 2, characterized in that, ​ 5. A cabin guard net automated welding system suitable for use in a construction machine according to claim 1, characterized in that, ​ One double-sided ear plate cylinder positioning tool clamp is used for positioning the double-sided ear plate on the bottom frame; two bottom frame cylinder positioning clamps are used for pressing the bottom frame; a single-sided ear plate positioning and pressing clamp is used for connecting the single-sided ear plate and the long strip frame; one cylinder pressing clamp is used for pressing the long strip frame; six longitudinal rib plate cylinder pressing positioning clamps are used for pressing the six longitudinal rib plates; five long strip frame cylinder tool clamps are used for fixing the long strip frame; four cylinder tool clamps are used for pressing the convex frame; six cylinder pressing positioning tools are used for fixing the long strip bent frame.

6. A cabin guard net automated welding system suitable for use in a working machine according to claim 5, characterized in that, The second tool clamp base installation platform is symmetrically provided with turnover platform connecting lugs on both sides, which are used for connecting the welding tool turnover system.

7. A cabin guard net automated welding system suitable for use in a working machine according to claim 5, characterized in that, The second tool clamp installation platform is fixed with four welding platform legs.

8. A cabin guard net automated welding system suitable for use in a construction machine according to claim 1, characterized in that, The flexible workstation installation base includes four turnover devices, eight cylinder pin shaft connecting devices, four tray limiting blocks, four turnover mechanism supporting trays, and four turnover device fixing blocks. The four turnover devices are connected together with the four turnover mechanism supporting trays through the turnover device fixing blocks on the end faces, and the eight cylinder pin shaft connecting devices are connected with the net point fixed welding tool or the net point fixed welding tool in each group of two.

9. A cabin guard net automated welding system suitable for use in a working machine according to claim 8, characterized in that, The flexible workstation installation base includes a welding workstation transverse base, a welding workstation longitudinal base, a welding robot installation platform, and a transverse base; both ends of the welding workstation transverse base and the transverse base are used for fixing the turnover devices, the welding robot installation platform is arranged in the middle of the welding workstation longitudinal base and is used for fixing the welding robot; the welding workstation transverse base, the welding workstation longitudinal base, and the transverse base form an "H" type base.

10. A cabin guard net automated welding system suitable for use in a construction machine according to claim 2, characterized in that, Magnets and ball plunger are arranged on the positioning baffle.

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