Numerical control side wall framework welding equipment

Abstract

Numerical control side wall framework welding equipment comprises a frame body and a plurality of square boxes arranged in the length direction of the frame body, the frame body is provided with the square boxes, the square boxes are loaded with positioning modules used for fixing and clamping a side wall framework, the frame body is provided with a servo model changing mechanism used for controlling the square boxes to move, and the square boxes move to synchronously drive the positioning modules to move; the positioning module comprises a positioning block and a pressing arm which are used for positioning and clamping the side wall framework; compared with the prior art, positioning of side wall frameworks of different models and sizes is met, the square box moves to drive the positioning module to move, so that the positioning module is moved to the inner side and the outer side of the side wall framework needing to be clamped, and the positioning block of the positioning module is matched with the pressing arm to clamp the side wall framework.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile welding tooling, in particular to numerically controlled side panel frame welding equipment. Background Art

[0002] In the field of bus production, the side panel frame welding tooling is an indispensable process equipment and an important link to ensure the accuracy of the side panel frame and the body frame. Bus production has very high requirements for the dimensional accuracy, flatness, and cross-sectional curvature of the side panel frame. The cross-sectional curvature and flatness of the side panel frame will directly affect the flatness of the side panel skin, and then affect the workload of scraping putty and grinding the side panel skin. The side panel frame assembly welding adopts CO2 welding technology, and it is difficult to control welding deformation and welding shrinkage. Therefore, there are certain requirements for the strength and accuracy of the welding tooling.

[0003] To solve the above problems, Chinese patent application number 201510313198.3 discloses a universal side frame welding tool for buses. The side frame welding tool disclosed above includes a tool base, on which a fixed positioning component for positioning the front door frame and a movable positioning component for positioning the window frame, the middle door frame, the waist beam, the front and rear wheel covers and the door frame are provided. The movable positioning component can be fixed on the tool base through an auxiliary positioning clamping device. Chinese patent application number 201621096814.0 discloses a side frame welding tool for buses. The side frame welding tool disclosed above includes a chassis, which includes at least two support beams arranged in parallel, and the support beams have a support arc surface for supporting the side frame. The chassis is also provided with a clamping device for pressing the side frame against the support arc surface.

[0004] In the above-disclosed prior art, the side enclosure frame is positioned by a fixed positioning assembly and a movable positioning assembly. However, the above-mentioned scheme only positions the side enclosure frame but does not clamp the side enclosure frame. When the side enclosure frame is welded, the side enclosure frame is prone to move, thereby affecting the welding quality and welding efficiency of the side enclosure frame. Utility Model Content

[0005] The utility model aims to overcome the defects in the prior art and provides a numerically controlled side enclosure frame welding device capable of positioning and clamping the side enclosure frame.

[0006] In order to achieve the above-mentioned purpose of the utility model, the utility model adopts the following technical scheme: a CNC side panel frame welding equipment, including a frame and a plurality of square boxes arranged along the length direction of the frame, the frame is provided with a plurality of square boxes, the square boxes are loaded with positioning modules for fixing and clamping the side panel frame, and the frame is installed with a servo mold changing mechanism for controlling the movement of the square boxes, and the movement of the square boxes synchronously drives the positioning module to move; the positioning module includes a positioning block and a pressure arm for positioning and clamping the side panel frame; a plurality of the positioning modules, square boxes and servo mold changing mechanisms form a movable positioning module for a bin column arranged at the lower end of the frame, and a plurality of the positioning modules, square boxes and servo mold changing mechanisms form a movable positioning module for a window column arranged at the upper end of the frame.

[0007] As a preferred solution of the utility model, the frame is provided with a plurality of slide rails arranged along the length direction of the frame, and the plurality of slide rails are arranged at different heights of the frame.

[0008] As a preferred solution of the utility model, the square box is provided with a sliding block matched with the slide rail, and a clamp for positioning the moving position of the square box is provided at the end of the sliding block.

[0009] As a preferred solution of the utility model, a cantilever beam for storing the side enclosure frame is movably provided on the slide rail at the top of the frame body.

[0010] As a preferred solution of the utility model, the positioning module includes a connecting member and a cylinder arranged on the connecting member, the connecting member is arranged on the square box, and the positioning block is arranged on the connecting member.

[0011] As a preferred solution of the utility model, the pressure arm is arranged on the output end of the cylinder, and the end of the pressure arm is provided with a cushion block abutting against the side frame.

[0012] As a preferred solution of the utility model, the servo type changing mechanism includes a servo motor arranged on the square box and a reducer connected to the servo motor, and a gear for driving the square box to move is provided at the output end of the reducer.

[0013] As a preferred solution of the utility model, a rack matched with the gear is provided on the frame, and the rack is arranged along the length direction of the frame.

[0014] As a preferred solution of the utility model, the square box is provided with a push-up mechanism for demoulding the skeleton after welding, and the push-up mechanism includes a push-up cylinder and a push-up block arranged at the output end of the push-up cylinder.

[0015] As a preferred solution of the utility model, the frame is provided with a pneumatic system connected to the cylinder, the ejecting cylinder and the clamp, one side of the frame is provided with an electric control system for controlling the positioning module and the servo mold changing mechanism, and the frame is also provided with a fixed standing platform arranged along the length direction of the frame.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The positioning module and servo changeover mechanism arranged on the square box can meet the positioning of side enclosure frames of different models and sizes, and the movement of the square box drives the movement of the positioning module, so as to move the positioning module to the inner and outer sides of the side enclosure frame to be clamped, so as to realize the cooperation between the positioning block of the positioning module and the pressure arm to realize the clamping of the side enclosure frame. In addition, the warehouse column movable positioning module and the window column movable positioning module composed of a number of positioning modules, square boxes and servo changeover mechanisms can realize the positioning of the warehouse column and the window column of the side enclosure frame, thereby ensuring the stability of the side enclosure frame during welding;

[0018] 2. Furthermore, the servo motor drives the square box to move on the slide rail, thereby realizing the movement of the positioning module, ensuring that the side enclosure frames of different specifications can be positioned, and at the same time, the square box is fixed to the corresponding position of the frame by the clamp, ensuring that the square box will not move during the welding process of the side enclosure frame, thereby ensuring the stability of the side enclosure frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model;

[0020] Figure 2 It is a top view of the utility model;

[0021] Figure 3 It is the structural diagram of the positioning module;

[0022] Figure 4 It is a structural diagram of the servo type changing mechanism;

[0023] Figure 5 This is a schematic diagram of the structure of a square box.

[0024] Figure numerals: frame 1, fixed standing platform 101, slide rail 102, cantilever beam 103, positioning module 2, connecting part 201, positioning block 2011, pressure arm 202, cushion block 2021, cylinder 203, lifting mechanism 3, lifting cylinder 301, lifting block 302, servo mold changing mechanism 4, servo motor 401, reducer 402, rack 403, clamp 404, gear 405, slider 406, warehouse column movable positioning module 5, window column movable positioning module 6, pneumatic system 7, electric control system 8, square box 9. DETAILED DESCRIPTION

[0025] The embodiments of the utility model are described in detail below with reference to the accompanying drawings.

[0026] like Figure 1-Figure 5As shown, a CNC side panel frame welding equipment includes a frame 1 and a plurality of square boxes 9 arranged along the length direction of the frame 1, the frame 1 is provided with a plurality of square boxes 9, the square boxes 9 are loaded with positioning modules 2 for fixing and clamping the side panel frame, and the frame 1 is installed with a servo mold changing mechanism 4 for controlling the movement of the square boxes 9, the movement of the square boxes 9 synchronously drives the positioning module 2 to move; the positioning module 2 includes a positioning block 2011 and a pressure arm 202 for positioning and clamping the side panel frame; the plurality of positioning modules 2, the square boxes 9 and the servo mold changing mechanism 4 form a movable positioning module 5 for a bin column arranged at the lower end of the frame 1, and the plurality of positioning modules 2, the square boxes 9 and the servo mold changing mechanism 4 form a movable positioning module 6 for a window column arranged at the upper end of the frame 1.

[0027] Furthermore, the frame 1 is a rectangular vertical structure, and the square box 9 is movably arranged on the opposite sides of the frame 1 along the length direction of the frame 1. The servo changing mechanism 4 is adopted to realize the main dimensional accuracy control of the body side panel frame, and the positioning block 2011 and the pressure arm 202 of the positioning module 2 realize the clamping function of the side panel frame. The whole can cover the welding of all highway passenger car models of 6-13.7m, and can adapt to the production of left-hand drive and right-hand drive models. The model change adjustment adopts CNC adjustment, and the equipment changeover time is: <5min.

[0028] The frame 1 is provided with a plurality of slide rails 102 arranged along the length direction of the frame 1, and the plurality of slide rails 102 are arranged at different heights of the frame 1. Furthermore, four 45# precision linear slide rails 102 are respectively arranged on both sides of the frame 1, and the installation of the slide rails 102 on the frame 1 is firm and reliable.

[0029] The square box 9 is provided with a slide block 406 matched with the slide rail 102 , and the end of the slide block 406 is provided with a clamp 404 for positioning the moving position of the square box 9 .

[0030] In addition, rigid shields may be installed on both sides of the frame 1 to cover the entire slide rail 102 and the slider 406 to prevent welding slag from damaging the surface of the slide rail 102 during assembly welding.

[0031] A movable beam 103 for storing the side frame is provided on the slide rail 102 at the top of the frame 1. Furthermore, three beams 103 are arranged on the frame 1 for temporary storage and a small amount of repair welding after the frame is welded. The beam 103 is installed in two slide rails 102 on the frame 1. A rail trolley is installed on the beam 103, which can be moved arbitrarily along the vehicle length direction. When the equipment is changed, it can move with the column positioning module 2. The beam 103 is movable in the vehicle length direction to ensure that the beam 103 will not interfere with other mechanisms of the tooling during the tooling change and tooling use.

[0032] The positioning module 2 includes a connecting member 201 and a cylinder 203 disposed on the connecting member 201 . The connecting member 201 is disposed on the square box 9 , and the positioning block 2011 is disposed on the connecting member 201 .

[0033] The pressure arm 202 is arranged on the output end of the cylinder 203, and the end of the pressure arm 202 is provided with a pad 2021 that abuts against the side enclosure frame. Furthermore, the pressure arm 202 cooperates with the positioning block 2011 under the drive of the cylinder 203 to achieve positioning and clamping of the side enclosure frame, thereby ensuring the stability of the side enclosure frame during welding.

[0034] The servo type-changing mechanism 4 comprises a servo motor 401 arranged on the square box 9 and a reducer 402 connected to the servo motor 401 . The output end of the reducer 402 is provided with a gear 405 connected to drive the square box 9 to move.

[0035] The frame 1 is provided with a rack 403 matched with the gear 405. The rack 403 is arranged along the length direction of the frame 1. Furthermore, two racks 403 on both sides of the frame 1 are used for moving the active positioning module 2 to ensure the changeover accuracy.

[0036] Furthermore, the operation of the servo motor 401 uses PLC programming to achieve infinite adjustment of the spacing between different columns. According to the different models, the specified model is input through the touch screen, and the servo motor 401 drives the gear 405 to move to the specified molding position on the rack 403. When it moves to the designated position, the clamp 404 driven by the air source locks the box 9 and the positioning module 2 to ensure the accurate positioning of the positioning module 2 and that it will not move during use. The front column is fixed in position and does not need to be configured with a servo mold changing mechanism 4. The remaining column positioning modules 2 are all equipped with a set of servo mold changing mechanisms 4, with 18 sets on each side, for a total of 36 sets.

[0037] The square box 9 is provided with a push-up mechanism 3 for demoulding the skeleton after welding. The push-up mechanism 3 includes a push-up cylinder 301 and a push-up block 302 arranged at the output end of the push-up cylinder 301. Further, 15 sets of push-up mechanisms 3 are arranged on each side of the frame 1. After welding is completed, pneumatic ejection is used to facilitate demoulding of the skeleton after welding. The cylinder diameter of the push-up cylinder 301 is φ80 to ensure sufficient ejection force.

[0038] The frame 1 is provided with a pneumatic system 7 connected with the cylinder 203, the ejection cylinder 301 and the clamp 404. The pneumatic system 7 is equipped with a pneumatic triplet, which can purify the compressed air. The system pressure can be continuously adjusted in the range of 0~1MPa, and the working pressure is 0.5~0.6MPa. The left / right side enclosure tooling independently controls the clamping and release of the cylinder.

[0039] An electric control system 8 for controlling the positioning module 2 and the servo type-changing mechanism 4 is provided on one side of the frame 1. The computer programs the PLC and HMI of the control layer and can monitor them. The communication between the control layer and the field layer is Profinet communication. The PLC controls and manages the field layer of the entire system, controls the frequency converter, servo motor, field bus module and other components, and then exchanges signals or information with the components of the execution layer to realize the function.

[0040] The frame 1 is also provided with a fixed standing platform 101 arranged along the length direction of the frame 1. Furthermore, the frame 1 is welded with large-sized rectangular tubes, which has sufficient strength and rigidity. After welding, it is subjected to aging treatment to eliminate stress. The design of the frame 1 takes into account the requirements of ergonomics. The fixed standing platform 101 is provided with sufficient space to ensure the operation and walking of production workers, and facilitates the accessibility of the operation. All assembly surfaces need to be processed after aging treatment. The surfaces related to assembly are all machined to ensure the assembly accuracy of the installation surface. The assembly surface roughness is Ra3.2μm.

[0041] The window column movable positioning module 6 is composed of a square box 9, a servo mold changing mechanism 4 and a plurality of positioning modules 5 arranged on the square box 9, wherein the servo mold changing mechanism 4 can ensure the precise movement of the square box 9, and the clamp 404 cooperates with the servo motor 401 brake to ensure the stable positioning of the square box 9 and the positioning module 2, and can withstand a certain impact load.

[0042] The window column movable positioning module 6 can meet the positioning requirements of window columns, safety door columns, upper and lower window beams, upper parts of front and rear columns, and upper parts of middle door columns. The window column movable positioning module 6 can be divided into a window upper beam positioning device, a window lower beam positioning device, and a column positioning device.

[0043] The window upper beam positioning device is installed on the square box 9 through a quick locking pin. The clamping adopts pneumatic clamping. The clamping arrangement is reasonable and does not affect the welding of the window column and the window upper beam. All positioning blocks 2011 are provided with 3mm adjustment gaskets, and the tooling is convenient to adjust. When feeding, the window upper beam is manually placed on the positioning block 2011, and the cylinder 203 drives the pressure arm 202 to automatically clamp the workpiece. After welding is completed, all cylinders 203 can be opened with one button, which is easy to operate. When the angle of the window upper beam of the serialized vehicle model and the spacing between the upper and lower edge beams of the window are the same, the positioning module 2 can meet the production of the serialized vehicle model, and no adjustment is required when the equipment is changed. If the angle of the window upper beam and the spacing between the upper and lower edge beams of the window are different, the vehicle model can be switched and expanded by switching the positioning.

[0044] The window lower beam positioning device is installed under the square box 9. The clamping adopts pneumatic clamping. The clamping arrangement is reasonable and does not affect the welding of the column and the window lower beam. All positioning blocks 2011 are provided with 3mm adjustment gaskets for easy adjustment. When feeding, the window lower beam is manually placed on the positioning block 2011, and the cylinder 203 drives the pressure arm 202 to automatically clamp the workpiece. After welding is completed, all cylinders 203 can be opened with one button, which is easy to operate. The window lower beam positioning can meet the production of serialized models, and there is no need to switch the positioning when changing models.

[0045] The column positioning devices are installed above and below the square box 9, respectively, and can position and clamp the upper part of the front and rear columns, the upper part of the door columns, and the window columns. Pneumatic clamping is used for clamping, and the clamping arrangement is reasonable, which does not affect the welding of the columns. All positioning blocks 2011 are provided with 3mm adjustment gaskets for easy adjustment. When feeding, the column is manually placed on the positioning block 2011, and the column is manually pre-pressed through the handle on the cylinder. The cylinder 203 has a self-locking mechanism. After manual pre-pressing, the pressure arm 202 cannot be opened, which can prevent the column from falling off. After all workpieces are loaded, press the clamping button, and the cylinder 203 drives the pressure arm 202 to automatically clamp the workpiece. After welding is completed, all cylinders 203 can be opened with one button, which is easy to operate.

[0046] The movable positioning module 5 of the warehouse column is composed of a square box 9, a servo shape-changing mechanism 4 and a plurality of positioning modules 5 arranged on the square box 9, wherein the servo shape-changing mechanism 4 can ensure the precise movement of the square box 9, and the clamp 404 cooperates with the servo motor 401 brake to ensure the stable positioning of the square box 9 and the positioning module 2, and can withstand a certain impact load. The movable positioning module 5 of the warehouse column can meet the positioning requirements of the warehouse column, waist beam, the lower part of the front and rear columns and the lower part of the middle door column. The movable positioning module 5 of the warehouse column can be divided into a skirt beam positioning device, a waist beam positioning device, and a column positioning device.

[0047] The skirt beam positioning device is installed at the bottom of the square box 9, and multiple sets of positioning modules 2 are configured for various vehicle models. All positioning blocks 2011 are provided with 3mm adjustment gaskets for easy adjustment. When feeding, the skirt beam is manually placed on the positioning block 2011. The vehicle model can be switched and expanded by switching the positioning module 2 to meet the production of serialized vehicles.

[0048] The waist beam positioning device is installed on the upper part of the square box 9. The clamping adopts pneumatic clamping. The clamping arrangement is reasonable and does not affect the welding of the column and the waist beam. All positioning blocks 2011 are equipped with 3mm adjustment gaskets for easy adjustment. When feeding, the waist beam of the manual material window is placed on the positioning block 2011, and the cylinder 203 drives the pressing arm 202 to automatically clamp the workpiece. After welding is completed, all cylinders 203 can be opened with one button, which is easy to operate.

[0049] The column positioning devices are installed above and below the square box 9, respectively, and can position and clamp the lower part of the front and rear columns, the lower part of the door columns, and the warehouse columns. Pneumatic clamping is used for clamping, and the clamping arrangement is reasonable, which does not affect the welding of the columns. All positioning blocks 2011 are provided with 3mm adjustment gaskets for easy adjustment. When feeding, the column is manually placed on the positioning block 2011, and the column is manually pre-pressed through the handle on the cylinder 203. The cylinder 203 has a self-locking mechanism. After manual pre-pressing, the pressure arm 202 cannot be opened, which can prevent the column from falling off. After all workpieces are loaded, press the clamping button, and the cylinder 203 drives the pressure arm 202 to automatically clamp the workpiece. After welding is completed, all cylinders can be opened with one button, which is easy to operate.

[0050] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention; therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

[0051] Although this article uses more of the following terms: frame 1, fixed standing platform 101, slide rail 102, cantilever beam 103, positioning module 2, connector 201, positioning block 2011, pressing arm 202, cushion block 2021, cylinder 203, material ejection mechanism 3, material ejection cylinder 301, ejection block 302, servo type change mechanism 4, servo motor 401, reducer 402, rack 403, clamp 404, gear 405, slider 406, warehouse column movable positioning module 5, window column movable positioning module 6, pneumatic system 7, electric control system 8, square box 9, etc., it does not exclude the possibility of using other terms. These terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A CNC side frame welding equipment, comprising a frame (1) and a plurality of square boxes (9) arranged along the length direction of the frame (1), characterized in that: The frame (1) is provided with a plurality of square boxes (9), the square boxes (9) are loaded with positioning modules (2) for fixing and clamping the side enclosure frame, and the frame (1) is installed with a servo mold changing mechanism (4) for controlling the movement of the square boxes (9), and the movement of the square boxes (9) synchronously drives the positioning modules (2) to move; the positioning modules (2) include positioning blocks (2011) and pressure arms (202) for positioning and clamping the side enclosure frame; the plurality of positioning modules (2), the square boxes (9) and the servo mold changing mechanism (4) form a movable positioning module (5) for a bin column arranged at the lower end of the frame (1); the plurality of positioning modules (2), the square boxes (9) and the servo mold changing mechanism (4) form a movable positioning module (6) for a window column arranged at the upper end of the frame (1).

2. The CNC side frame welding equipment according to claim 1, characterized in that: The frame (1) is provided with a plurality of slide rails (102) arranged along the length direction of the frame (1), and the plurality of slide rails (102) are arranged at different heights of the frame (1).

3. The CNC side frame welding equipment according to claim 2, characterized in that: The square box (9) is provided with a sliding block (406) matched with the sliding rail (102), and a clamp (404) for positioning the moving position of the square box (9) is provided at the end of the sliding block (406).

4. The CNC side frame welding equipment according to claim 2, characterized in that: A cantilever beam (103) for storing the side enclosure frame is movably provided on the slide rail (102) at the top of the frame body (1).

5. The CNC side frame welding equipment according to claim 3 is characterized in that: The positioning module (2) comprises a connecting member (201) and a cylinder (203) arranged on the connecting member (201); the connecting member (201) is arranged on the square box (9), and the positioning block (2011) is arranged on the connecting member (201).

6. The CNC side frame welding equipment according to claim 5, characterized in that: The pressure arm (202) is arranged on the output end of the cylinder (203), and a cushion block (2021) abutting against the side frame is provided at the end of the pressure arm (202).

7. The CNC side frame welding equipment according to claim 1, characterized in that: The servo type-changing mechanism (4) comprises a servo motor (401) arranged on the square box (9) and a reducer (402) connected to the servo motor (401), and a gear (405) for driving the square box (9) to move is provided at the output end of the reducer (402).

8. The CNC side frame welding equipment according to claim 7, characterized in that: The frame body (1) is provided with a rack (403) matched with the gear (405), and the rack (403) is arranged along the length direction of the frame body (1).

9. The CNC side frame welding equipment according to claim 5, characterized in that: The square box (9) is provided with a push-up mechanism (3) for demoulding the skeleton after welding. The push-up mechanism (3) comprises a push-up cylinder (301) and a push-up block (302) arranged at the output end of the push-up cylinder (301).

10. The CNC side frame welding equipment according to claim 9, characterized in that: The frame (1) is provided with a pneumatic system (7) connected to the cylinder (203), the ejection cylinder (301) and the clamp (404); one side of the frame (1) is provided with an electric control system (8) for controlling the operation of the positioning module (2) and the servo mold changing mechanism (4); and the frame (1) is also provided with a fixed standing platform (101) arranged along the length direction of the frame (1).

Images