Milling tool for solid blind rivet craters of heating tray

Abstract

The utility model discloses a heating tray solid blind rivet crator milling tool which is characterized in that a tool base is provided with a horizontal guide rail and a trapezoidal screw rod along the length direction, one end of the trapezoidal screw rod is connected with the output end of a horizontal driving motor speed reducer, the trapezoidal screw rod is meshed with a screw sleeve, and the screw sleeve is fixed at the center of the bottom of a horizontal moving bracket; the two sides of the bottom of the horizontal moving support are supported on the horizontal guide rails through horizontal sliding blocks. A lifting guide rail extending in the vertical direction is installed on one side of the horizontal moving support, the two sides of the back face of the lifting sliding plate are supported on the lifting guide rail through lifting sliding blocks, and a rack extending in the vertical direction is fixed to the middle of the back face of the lifting sliding plate. The input end of the lifting speed reducer is driven by a lifting motor, a gear is mounted on an output shaft of the lifting speed reducer, and the gear is meshed with the rack; a milling power head assembly is fixed to the front face of the lifting sliding plate, and a plane milling cutter is arranged at the lower end of the milling power head assembly. The tool can reduce the labor intensity of workers and improve the grinding efficiency and quality of the blind rivets.

Description

Technical Field

[0001] This utility model relates to a milling fixture for industrial equipment manufacturing and maintenance, and more particularly to a milling fixture for solid tie rod weld scars on a heating tower tray, belonging to the technical field of machining equipment. Background Technology

[0002] Vertical steam desiccant and other equipment have multiple heating jackets (also known as heating trays). The material is spread flat on the heating jacket, and high-temperature and high-pressure saturated steam is introduced into the heating jacket to indirectly heat the material, which can initially remove the solvent from the material. Then the material falls from the discharge port on the tray to the next layer to continue to be heated.

[0003] The heating interlayer consists of a circular, coaxial upper and lower interlayer plate. The upper and lower interlayer plates are parallel to each other and connected as a whole by a plurality of evenly distributed rivets. The upper and lower ends of the rivets pass through circular holes in the upper and lower interlayer plates, respectively, and are welded together. As the equipment becomes increasingly larger, the outer diameter of the heating interlayer can reach about 7 meters, and each heating interlayer can have more than 200 rivets.

[0004] After the rivets are welded, the weld scars need to be ground to avoid damaging the scraper on the upper surface of the interlayer. One method is to manually use a handheld cutting machine with a cutting disc to cut and grind, which is laborious, time-consuming, and involves a huge amount of work; another method is to use a belt sander, which removes rust quickly, but grinding the weld scars is more difficult.

[0005] With the increasing size and precision requirements of industrial equipment, traditional weld scar treatment methods can no longer meet the needs of efficient and high-quality production. Therefore, there is an urgent need for an efficient and precise milling fixture to solve this problem. Utility Model Content

[0006] The purpose of this invention is to overcome the problems existing in the prior art and provide a milling fixture for solid rivet weld scars on heating tower trays. This fixture uses a flat milling cutter to cut and grind the weld scar protrusions, reducing manual labor intensity and improving the grinding efficiency and quality of the rivet weld scar protrusions.

[0007] To solve the above technical problems, this utility model provides a milling fixture for solid tie rod weld scars on a heating tower tray, including a fixture base 1. A horizontal guide rail 1c and a trapezoidal screw 1b are installed on the fixture base 1 along the length direction. One end of the trapezoidal screw 1b is connected to the output end of the horizontal drive motor reducer 1a. A threaded sleeve 1i is engaged on the trapezoidal screw 1b. The threaded sleeve 1i is fixed at the bottom center of the horizontal moving bracket 1h. The bottom sides of the horizontal moving bracket 1h are supported on the horizontal guide rail 1c by horizontal sliders 1j.

[0008] A vertically extending lifting guide rail 3g is installed on one side of the horizontal moving support 1h. The back sides of the lifting slide plate 3e are supported on the lifting guide rail 3g by lifting sliders 3f. A vertically extending rack 3d is fixed in the middle of the back side of the lifting slide plate 3e. The input end of the lifting reducer 3b is driven by the lifting motor 3a. A gear 3c is installed on the output shaft of the lifting reducer 3b. The gear 3c meshes with the rack 3d.

[0009] The front of the lifting slide plate 3e is fixed with a milling power head assembly 2, and the lower end of the milling power head assembly 2 is provided with a flat milling cutter 2f.

[0010] As an improvement of this utility model, the milling power head assembly 2 includes a power head drive motor 2a, a power head 2e, a driving V-belt pulley 2b, a V-belt 2c, a driven V-belt pulley 2d, and a face milling cutter 2f. The driving V-belt pulley 2b is mounted on the lower end of the output shaft of the power head drive motor 2a. The driving V-belt pulley 2b is connected to the driven V-belt pulley 2d through the V-belt 2c. The driven V-belt pulley 2d is mounted on the upper end of the power head 2e, and the face milling cutter 2f is mounted on the lower end of the power head 2e.

[0011] As a further improvement of this utility model, the left end of the tooling base 1 is provided with a left adjustment block 1d, and a left limit switch 1e is installed on the left adjustment block 1d to limit the leftward movement range of the horizontal moving bracket 1h; the right end of the tooling base 1 is provided with a right adjustment block 1f, and a right limit switch 1g is installed on the right adjustment block 1f to limit the rightward movement range of the horizontal moving bracket 1h.

[0012] As a further improvement of this utility model, an upper limit switch 3h is installed at the upper end of the lifting guide rail 3g to limit the upward limit position of the milling power head assembly 2, and a lower limit switch 3j is installed at the lower end of the lifting guide rail 3g to limit the downward limit position of the milling power head assembly 2.

[0013] As a further improvement of this utility model, the bottom of the tooling base 1 is fixedly equipped with a plurality of electromagnets 1k that can adsorb and fix the tooling base 1 onto the workpiece 5 to be processed.

[0014] As a further improvement of this utility model, the spacing between adjacent electromagnets 1k is equal and their positions can be adjusted in the width direction of the tooling base.

[0015] Compared with the prior art, this utility model has achieved the following beneficial effects: it replaces the manual cutting of solid rivet weld scars on the tower tray with cutting discs, reduces the labor intensity of personnel, improves the surface appearance quality of products, allows one person to operate multiple tooling for milling and grinding, reduces labor costs, and improves the manufacturing efficiency of heated sandwich products. Attached Figure Description

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The drawings are provided for reference and illustration only and are not intended to limit the present invention.

[0017] Figure 1 This is a perspective view of the milling fixture for the weld scar of the solid tie rod on the heating tower tray of this utility model;

[0018] Figure 2 The three-dimensional horizontal moving mechanism in this utility model Figure 1 ;

[0019] Figure 3 The three-dimensional horizontal moving mechanism in this utility model Figure 2 ;

[0020] Figure 4 A 3D view of the driving part of the lifting mechanism;

[0021] Figure 5 The main view of the lifting mechanism drive section;

[0022] Figure 6 for Figure 5 Sectional view along the middle AA;

[0023] Figure 7 This is a cross-sectional view of the milling power head assembly in this utility model;

[0024] Figure 8 This is a perspective view of the milling power head assembly in this utility model;

[0025] Figure 9 This is a working state diagram of the milling fixture for the solid tie rod weld scar of the heating tower tray of this utility model;

[0026] In the diagram: 1. Tooling base; 1a. Horizontal drive motor reducer; 1b. Trapezoidal screw; 1c. Horizontal guide rail; 1d. Left adjusting block; 1e. Left limit switch; 1f. Right adjusting block; 1g. Right limit switch; 1h. Horizontal moving bracket; 1i. Screw sleeve; 1j. Horizontal slider; 1k. Electromagnet;

[0027] 2. Milling power head assembly; 2a. Power head drive motor; 2b. Driving V-belt pulley; 2c. V-belt; 2d. Driven V-belt pulley; 2e. Power head; 2f. Face milling cutter;

[0028] 3. Lifting mechanism; 3a. Lifting motor; 3b. Lifting reducer; 3c. Gear; 3d. Rack; 3e. Lifting slide plate; 3f. Lifting slider; 3g. Lifting guide rail; 3h. Upper limit switch; 3j. Lower limit switch;

[0029] 4. Electrical control cabinet;

[0030] 5. Parts to be processed; 5a. Tack rivets. Detailed Implementation

[0031] In the following description of this utility model, the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not mean that the device must have a specific orientation.

[0032] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description, in conjunction with specific illustrations, further elaborates on this utility model.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0034] like Figures 1 to 9 As shown, the milling fixture for solid tie rod weld scars on the heating tower tray of this utility model includes a fixture base 1, a milling power head assembly 2, and a lifting mechanism 3. A horizontal moving mechanism is installed on the fixture base 1.

[0035] The horizontal moving mechanism includes a horizontal drive motor reducer 1a, a trapezoidal screw 1b, a horizontal guide rail 1c, a left adjusting block 1d, a left limit switch 1e, a right adjusting block 1f, a right limit switch 1g, a horizontal moving bracket 1h, a screw sleeve 1i, and a horizontal slider 1j. The two horizontal guide rails 1c are parallel to each other and extend along the length of the fixture base 1. The horizontal drive motor reducer 1a and the trapezoidal screw 1b are provided between the two horizontal guide rails 1c. The horizontal drive motor reducer 1a is fixed at the head end of the fixture base 1. The output end of the horizontal drive motor reducer 1a is connected to one end of the trapezoidal screw 1b. The other end of the trapezoidal screw 1b is supported at the tail end of the fixture base 1 by a bearing seat.

[0036] A threaded sleeve 1i is screwed onto the trapezoidal screw 1b, and the threaded sleeve 1i is fixed to the bottom center of the horizontal moving bracket 1h. Horizontal sliders 1j are fixed on both sides of the bottom of the horizontal moving bracket 1h, and are supported on the horizontal guide rail 1c by the horizontal sliders 1j. When the horizontal drive motor reducer 1a drives the trapezoidal screw 1b to rotate, the threaded sleeve 1i drives the horizontal moving bracket 1h and the lifting mechanism 3 installed on the horizontal moving bracket 1h to move horizontally along the horizontal guide rail 1c.

[0037] Multiple electromagnets 1k are fixedly installed on the bottom of the tooling base 1 to attract and fix the tooling onto the workpiece 5 to be processed; the spacing between adjacent electromagnets 1k is equal and their positions can be adjusted in the width direction of the tooling base to avoid the pull studs 5a on the workpiece 5 to be processed.

[0038] The left end of the tooling base 1 is provided with a left adjusting block 1d and a left limit switch 1e, which are used to adjust and limit the leftward movement range of the horizontal moving support 1h and the lifting mechanism 3; the right end of the tooling base 1 is provided with a right adjusting block 1f and a right limit switch 1g, which are used to adjust and limit the rightward movement range of the horizontal moving support 1h and the lifting mechanism 3.

[0039] The milling power head assembly 2 includes a power head drive motor 2a, a power head 2e, a face milling cutter 2f, a driving V-belt pulley 2b, a V-belt 2c, and a driven V-belt pulley 2d. The driving V-belt pulley 2b is mounted on the lower end of the output shaft of the power head drive motor 2a. The driving V-belt pulley 2b is connected to the driven V-belt pulley 2d through the V-belt 2c. The driven V-belt pulley 2d is mounted on the upper end of the power head 2e, and the face milling cutter 2f is mounted on the lower end of the power head 2e.

[0040] The lifting mechanism 3 includes a lifting slide plate 3e, a lifting slider 3f, a lifting guide rail 3g, a lifting motor 3a, a lifting reducer 3b, a gear 3c, a rack 3d, an upper limit switch 3h, and a lower limit switch 3j. Two parallel and vertically extending lifting guide rails 3g are fixed to one side of the horizontal moving bracket 1h. The back sides of the lifting slide plate 3e are supported on the lifting guide rails 3g by the lifting slider 3f. A vertically extending rack 3d is fixed to the center of the back side of the lifting slide plate 3e. The input end of the lifting reducer 3b is driven by the lifting motor 3a. A gear 3c is mounted on the output shaft of the lifting reducer 3b, and the gear 3c meshes with the rack 3d.

[0041] The lifting motor 3a drives the gear 3c to rotate through the lifting reducer 3b. The gear 3c drives the rack 3d to drive the lifting slide plate 3e to lift the milling power head assembly 2, thereby adjusting the height of the flat milling cutter 2f.

[0042] The upper limit switch 3h is installed at the upper end of the lifting guide rail 3g to limit the rising position of the milling power head assembly 2; the lower limit switch 3j is installed at the lower end of the lifting guide rail 3g to limit the falling position of the milling power head assembly 2.

[0043] The electrical control cabinet 4 is installed on the horizontal moving support 1h to control the operation of the horizontal drive motor reducer 1a, the lifting motor 3a and the power head drive motor 2a, and to control the start and stop of the tooling and the coordinated action of each component.

[0044] The working process of the milling fixture for the solid tie rod weld scars of the heating tower tray of this utility model is as follows:

[0045] The tooling is hoisted and placed on the workpiece 5 by a crane, ensuring that the electromagnet 1k avoids the pull stud 5a, and that the center of the flat milling cutter 2f is on the straight line of the pull stud 5a. The electromagnet 1k is activated to fix the tooling on the workpiece 5. In the manual mode of the electrical control cabinet 4, the lifting motor 3a is activated, and the lifting reducer 3b drives the rack 3d and the lifting slide plate 3e to rise and fall through the gear 3c, thereby raising the milling power head assembly 2 installed on the lifting slide plate 3e to the position of the upper limit switch 3h.

[0046] Start the horizontal drive motor reducer 1a, drive the trapezoidal screw 1b to rotate, the screw sleeve 1i moves along the trapezoidal screw 1b, and the traction adjustment lifting mechanism 3 moves to the position of the left limit switch 1e. Adjust the right adjustment block 1f to drive the right limit switch 1g to determine the range of the rivets to be processed.

[0047] When the electrical control cabinet 4 switches to automatic mode, the power head drive motor 2a starts, and the active V-belt pulley 2b drives the driven V-belt pulley 2d to rotate through the V-belt 2c, thereby driving the flat milling cutter 2f to rotate; then the lifting drive motor reducer starts, controlling the milling power head assembly 2 to descend to the set milling depth and then stop; then the horizontal drive motor reducer 1a starts to rotate forward, controlling the lifting mechanism 3 to move horizontally to the right, and the milling power head assembly 2 mills the protruding weld scar of the pull stud 5a.

[0048] When the lifting mechanism 3 moves horizontally to the right limit switch 1g position, the lifting motor 3a starts, controlling the milling power head assembly 2 to continue descending to the set milling depth and then stop. The horizontal drive motor reducer 1a reverses, controlling the lifting mechanism 3 to move horizontally to the left, continuing to mill the weld scar protruding from the pull stud 5a with the milling power head assembly 2, and repeating this process to further mill the weld scar.

[0049] When the milling power head assembly 2 moves down to the lower limit switch 3j position, the protruding weld scar is completely milled away; after the horizontal drive motor reducer 1a controls the lifting mechanism 3 to move horizontally to complete one milling operation, the entire fixture stops.

[0050] Move this tooling to the unprocessed area of ​​the tower tray or onto the unprocessed tower tray using a crane, and repeat the above operation.

[0051] This fixture uses a flat milling cutter to cut and grind weld scars, replacing traditional manual cutting disc grinding and belt sander grinding. While manually grinding a single rivet weld scar with a handheld cutting machine takes an average of four minutes, this milling fixture can complete the task in one minute, increasing efficiency by 75%. It also reduces manual labor intensity and improves milling efficiency and quality. Furthermore, by incorporating components such as electromagnets and limit switches, the fixture's stability and operational precision are enhanced, making it highly practical and promising for market application.

[0052] The above description is merely a preferred embodiment of the present utility model, showing and describing the basic principles, main features, and advantages of the present utility model. It is not intended to limit the scope of patent protection of the present utility model. Those skilled in the art should understand that the present utility model is not limited to the above embodiments. In addition to the above embodiments, the present utility model may have other implementations without departing from the spirit and scope of the present utility model. Various changes and improvements to the present utility model are also possible. All technical solutions formed by equivalent substitutions or equivalent transformations fall within the scope of protection claimed by the present utility model. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents. Technical features not described in the present utility model can be implemented by or using existing technology, and will not be elaborated here.

Claims

1. A heating tray solid drawn nail weld scar milling tooling, comprising a tooling base (1), characterized in that, The tooling base (1) is equipped with parallel horizontal guide rails (1c) and trapezoidal screws (1b) along its length. One end of the trapezoidal screw (1b) is connected to the output end of the horizontal drive motor reducer (1a). A screw sleeve (1i) is engaged on the trapezoidal screw (1b). The screw sleeve (1i) is fixed at the bottom center of the horizontal moving bracket (1h). The bottom sides of the horizontal moving bracket (1h) are supported on the horizontal guide rails (1c) by horizontal sliders (1j). A vertically extending lifting guide rail (3g) is installed on one side of the horizontal moving support (1h). The back sides of the lifting slide plate (3e) are supported on the lifting guide rail (3g) by lifting sliders (3f). A vertically extending rack (3d) is fixed in the middle of the back side of the lifting slide plate (3e). The input end of the lifting reducer (3b) is driven by the lifting motor (3a). A gear (3c) is installed on the output shaft of the lifting reducer (3b). The gear (3c) meshes with the rack (3d). The front of the lifting slide plate (3e) is fixed with a milling power head assembly (2), and the lower end of the milling power head assembly (2) is provided with a flat milling cutter (2f).

2. The heated tray solid pull stud weld scar milling tooling of claim 1, wherein: The milling power head assembly (2) includes a power head drive motor (2a), a power head (2e), a driving V-belt pulley (2b), a V-belt (2c), a driven V-belt pulley (2d), and a face milling cutter (2f). The driving V-belt pulley (2b) is mounted on the lower end of the output shaft of the power head drive motor (2a). The driving V-belt pulley (2b) is connected to the driven V-belt pulley (2d) through the V-belt (2c). The driven V-belt pulley (2d) is mounted on the upper end of the power head (2e), and the face milling cutter (2f) is mounted on the lower end of the power head (2e).

3. The heated tray solid pull stud weld scar milling tooling of claim 1, wherein: The tooling base (1) has a left adjustment block (1d) at its left end, and a left travel switch (1e) is installed on the left adjustment block (1d) to limit the leftward movement range of the horizontal moving bracket (1h); the tooling base (1) has a right adjustment block (1f) at its right end, and a right travel switch (1g) is installed on the right adjustment block (1f) to limit the rightward movement range of the horizontal moving bracket (1h).

4. The heated tray solid pull stud weld scar milling tooling of claim 1, wherein: The upper end of the lifting guide rail (3g) is equipped with an upper limit switch (3h) that limits the upward position of the milling power head assembly (2), and the lower end of the lifting guide rail (3g) is equipped with a lower limit switch (3j) that limits the downward position of the milling power head assembly (2).

5. The heated tray solid dowel weld scar milling tooling of claim 1, wherein: The bottom of the tooling base (1) is fixedly equipped with a plurality of electromagnets (1k) that can attract and fix the tooling base (1) onto the workpiece (5) to be processed.

6. The heated tray solid dowel weld scar milling tooling of claim 5, wherein: The spacing between adjacent electromagnets (1k) is equal and their positions can be adjusted in the width direction of the tooling base.

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