CN104139208B - Semi-honeycomb steel strip shaping and cutting machine to ensure uniform forced convection flow field - Google Patents

Abstract

The invention discloses a semi-honeycomb steel strip shaping and cutting machine for ensuring the uniformity of a forced convection flow field, which comprises a top plate and a bottom plate which are horizontally arranged, wherein the top plate and the bottom plate are fixedly connected through a plurality of guide posts, and the guide posts are vertical to the top plate and the bottom plate; a pressing plate parallel to the top plate and the bottom plate is arranged between the top plate and the bottom plate; the pressure plate is provided with a guide sleeve fixedly connected with the pressure plate; the guide sleeve is in sliding fit with the guide column through the guide hole; a lower rack is arranged on the bottom plate; an upper rack is arranged on the pressure plate; the upper rack is meshed with the lower rack in a tooth form under the condition that the pressure plate moves to the bottommost position; the shaping and cutting machine is provided with a pressing plate driving mechanism. By adopting the technical scheme, the tooth shape of the steel belt is accurately shaped, and the shaping precision of equipment is high; the shaping work and the cutting-off work are combined on one device to be completed; after adjustment, the shaping and the cutting can be carried out respectively, or the shaping and the cutting can be carried out simultaneously; simple structure and convenient use and adjustment.

Description

Semi-honeycomb steel strip shaping and cutting machine to ensure uniform forced convection flow field

technical field

The invention belongs to the technical field of mechanical product processing technology, and relates to mechanical product processing equipment. More specifically, the invention relates to a semi-honeycomb steel strip shaping and cutting machine that ensures uniform forced convection flow field.

Background technique

In recent years, with the demand for high-speed wind tunnel construction at home and abroad, more and more ventilation windows with small wind resistance, uniform flow field, and composed of metal honeycomb structure have been applied. This kind of honeycomb ventilation window is called honeycomb window.

As shown in FIG. 8 , FIG. 9 and FIG. 10 , the honeycomb window is composed of an outer frame 14 and a honeycomb panel 15 .

According to needs, these windows are composed of hexagonal honeycomb grids of different sizes, and the grid material is about 0.1mm thick and 13mm wide soft magnetic steel strip or special stainless steel strip. The accuracy of grid size directly affects the product quality of honeycomb panels. Cutting, forming in tooling, welding accuracy, burrs, gaps and welding spatter in the cutting process will determine the performance of the product. Due to the high precision requirements of honeycomb panel products, special high-precision equipment must be used.

The process sequence of honeycomb panel production is:

Cut the soft magnetic steel strip into a narrow steel strip of standard width;

Roll the narrow steel strip into a semi-honeycomb rack;

Shaping the rack and cutting it to length;

The semi-honeycomb rack is welded into a honeycomb panel;

Cut the honeycomb panels to size;

Fit the honeycomb panels into the frame and weld them.

The series production equipment of honeycomb panel is mainly divided into: steel strip cutting, semi-honeycomb hobbing forming, semi-honeycomb rack shaping and cutting, honeycomb panel welding, honeycomb panel cutting and observation window welding forming and other equipment.

Due to the particularity of the honeycomb panel production process, there is no introduction of such product production equipment at home and abroad.

The semi-honeycomb steel belt rolled out by the semi-honeycomb steel belt hobbing machine is shown in Figure 1 (before shaping). Due to the hobbing forming, the semi-hexagon has errors in the inner and outer angles except for the accurate side length and size. At the same time, the hobbing process also determines that the corners of the semi-hexagon have small arcs. The slight errors in the above shapes will directly affect the product performance of the honeycomb panel after molding.

In addition, before welding the semi-honeycomb steel strip into a honeycomb panel, it is necessary to cut the steel strip into a fixed length according to the requirements.

Based on the above requirements, it is necessary to use special equipment to shape and cut the semi-honeycomb steel belt. This special shaping, cutting equipment does not yet have mature product to appear on the market at present, does not have corresponding technical scheme to disclose yet.

Contents of the invention

The invention provides a semi-honeycomb steel strip shaping and cutting machine that ensures uniform forced convection flow field, and aims to improve the product quality and production efficiency of honeycomb panels.

In order to achieve the above object, the technical scheme that the present invention takes is:

The semi-honeycomb steel strip shaping and cutting machine that ensures uniform forced convection flow field of the present invention includes a horizontally arranged top plate and a bottom plate, and the described top plate and bottom plate are fixedly connected by a plurality of guide columns, and the described guide columns are connected with the top plate and the bottom plate bottom plate vertical;

Between the top plate and the bottom plate, a pressing plate parallel to the top plate and the bottom plate is arranged;

A guide sleeve fixedly connected to the pressing plate is provided; the guide sleeve forms a sliding fit with the guide post through a guide hole;

A lower rack is set on the bottom plate; an upper rack is set on the pressing plate; when the pressing plate moves to the bottom position, the upper rack is meshed with the lower rack;

The shaping and cutting machine is provided with a pressing plate driving mechanism.

The driving mechanism of the pressing plate is as follows: an air cylinder is fixedly arranged on the upper surface of the top plate, the piston rod of the air cylinder passes through the top plate downwards, and the end of the piston rod is fixedly connected with the pressing plate through the cylinder joint.

A cutter is provided at the end of the pressing plate, and the cutter and the end of the lower rack form a knife edge.

A guide pin fixedly connected to the upper rack is provided; a guide pin bushing is provided on the pressing plate; the upper section of the guide pin forms a sliding fit with the inner hole of the guide pin bush; the guide The upper end of the pin is provided with a convex circle, and the diameter of the convex circle is larger than the inner hole diameter of the guide pin bushing; between the pressure plate and the upper rack, the guide pin is equipped with a spring, and the spring is compressed Spring; under the action of the spring, the upper rack is at a certain distance from the pressing plate, and the cutting edge of the cutter is higher than the lower edge of the upper rack.

The present invention adopts the above-mentioned technical scheme and utilizes the rack meshing principle to precisely shape the tooth shape of the steel strip during the meshing process of the semi-hexagonal steel strip, and the equipment has high shaping precision; according to the semi-hexagonal steel strip shaping and steel strip cutting Because of the same positioning method, the shaping work and cutting work are combined on one device; after adjustment, the shaping and cutting can be carried out separately, or at the same time; the structure is simple and easy to use and adjust.

Description of drawings

The contents shown in the accompanying drawings and the marks in the drawings are as follows:

Fig. 1 is the structural representation before the shaping of half honeycomb strip of the present invention;

Fig. 2 is the structural representation after the shaping of semi-honeycomb steel band of the present invention;

Fig. 3 is shaping, the structural representation of cutting machine of the present invention;

Fig. 4 is the enlarged structural schematic diagram of place A in Fig. 3;

Fig. 5 is the enlarged structural schematic diagram of place B in Fig. 3;

Fig. 6 is the right side view of structure shown in Fig. 3;

FIG. 7 is an enlarged schematic view of the structure of the guide pin and the bushing in FIG. 3 .

Fig. 8 is the front view of honeycomb window;

Fig. 9 is a top view of the structure shown in Fig. 8;

Fig. 10 is a partially enlarged view of the honeycomb structure.

Labeled in the figure:

1. Cylinder, 2. Top plate, 3. Pressure plate, 4. Bottom plate, 5. Cutter, 6. Upper rack, 7. Lower rack, 8. Guide column, 9. Guide sleeve, 10. Cylinder joint, 11, Spring, 12, guide pin, 13, guide pin bushing, 14, outer frame, 15, honeycomb plate.

detailed description

The specific implementation of the present invention will be described in further detail below by describing the embodiments with reference to the accompanying drawings, so as to help those skilled in the art have a more complete, accurate and in-depth understanding of the inventive concepts and technical solutions of the present invention.

In order to improve the technical performance of the product, it is necessary to precisely shape the semi-honeycomb steel belt rolled out by the semi-honeycomb steel belt hobbing machine to meet the requirements shown in Figure 2 (after shaping).

The tooth shape is designed to be half of the regular hexagon: the length of the three tooth sides is L, and the tooth tip angle is 60°. Considering the thickness δ of the extruded material, the side length of the tooth valley is: L+2δ×tan30°.

By analyzing the prior art, the equipment for shaping and cutting of the present invention should have the following characteristics and requirements:

1. Improve the shape accuracy of the half-hexagon while ensuring the dimensional accuracy of the half-hexagon; because the accuracy of the hexagonal honeycomb holes formed after splicing two half-honeycomb steel strips directly affects the effect of the product;

2. Improve the sharpness of the semi-hexagonal corners and eliminate the corner arcs as much as possible;

3. Make sure that the cutting edge is parallel to the direction of the tooth shape and the cut is free of burrs, because the burrs after forming also affect the effect of the product.

Two methods can be used for semi-cellular strip shaping: rack and pinion rolling and double rack extrusion.

The principle of rack and pinion rolling shaping equipment is: use the same type of trapezoidal gear and rack to mesh with each other and roll shaping. Its advantages are: the equipment is simple, and in theory it can roll a longer steel strip. Disadvantages: First, because the meshing of trapezoidal gears is incomplete meshing, especially the corners of the tooth tips cannot be completely meshed, so the corner arc cannot be eliminated. The second disadvantage is that the cutting work of the steel strip cannot be completed on this equipment at the same time, and only additional equipment is added to cut off.

The principle of double-rack extrusion shaping equipment is: use two trapezoidal racks of the same type to extrude and shape each other. Its advantages are good shaping effect and high precision, and the cutting work of the steel strip can be completed on the same equipment. The disadvantage is that in order to ensure the rigidity of the equipment, the complexity and volume of the equipment are increased.

Based on the above advantages and disadvantages, the present invention draws the following inventive concepts:

1. The new equipment is designed using the principle of double rack extrusion to ensure the shape accuracy of the semi-hexagon and eliminate the corner arc as much as possible;

2. In view of the fact that the positioning method of the shaping station for the semi-honeycomb steel strip is the same as the cutting positioning method, it can be designed to complete the cutting work while completing the shaping work.

The structure shown in Figure 3 and Figure 6 is a semi-honeycomb steel strip shaping and cutting machine that ensures a uniform forced convection flow field of the present invention, including a horizontally arranged top plate 2 and a bottom plate 4, and said top plate 2 and bottom plate 4 A plurality of guide posts 8 are fixedly connected, and the guide posts 8 are perpendicular to the top plate 2 and the bottom plate 4 .

In order to solve the problems existing in the prior art and overcome its defects, and realize the purpose of the invention to improve the product quality and production efficiency of the honeycomb panel, the technical scheme adopted by the present invention is:

As shown in Fig. 3 and Fig. 6, the semi-honeycomb steel strip shaping and cutting machine that ensures the uniform forced convection flow field of the present invention, between the top plate 2 and the bottom plate 4, is set parallel to the top plate 2 and the bottom plate 4 Pressing plate 3; said pressing plate 3 is provided with a guide sleeve 9 fixedly connected with it; said guide sleeve 9 forms a sliding fit with said guide post 8 through a guide hole; said lower rack 7 is set on said bottom plate 4 ; the upper rack 6 is set on the pressing plate 3; when the pressing plate 3 moves to the bottom position, the upper rack 6 is toothed with the lower rack 7; the shaping, The cutting machine is equipped with a platen driving mechanism.

FIG. 4 is an enlarged schematic view of the tooth profile of the upper rack 6; FIG. 5 is an enlarged schematic view of the tooth profile of the lower rack 7.

The above technical solution has the advantages of: utilizing the principle of meshing of the racks, the tooth profile of the steel strips can be precisely shaped during the meshing process of the semi-hexagonal steel strips; the shaping precision of the equipment is high.

The driving mechanism of the pressing plate is as follows: a cylinder 1 is fixedly installed on the upper surface of the top plate 2 , the piston rod of the cylinder 1 passes through the top plate 2 downwards, and the end of the piston rod is fixedly connected with the pressing plate 3 through the cylinder joint 10 .

The cylinder is used as the power source, and the four guide columns and the ball linear bearing mechanism ensure the stability of extrusion shaping and reduce wear and tear.

A cutter 5 is provided at the end of the pressing plate 3 , and the cutter 5 forms a knife edge with the end of the lower rack 7 .

The upper rack 6 is provided with a guide pin 12 fixedly connected with it; the pressure plate 3 is provided with a guide pin bushing 13; fit; the upper end of the guide pin 12 is provided with a convex circle, and the diameter of the convex circle is larger than the inner hole diameter of the guide pin bushing 13; between the pressure plate 3 and the upper rack 6, the guide pin 12. A spring 11 is set on the top, and the spring 11 is a compression spring; under the action of the spring 11, the upper rack 6 is separated from the pressure plate 3 by a certain distance, and the cutting edge of the cutter 5 is higher than the upper rack 6's lower edge.

According to the reason that the positioning methods of semi-hexagonal steel strip shaping and steel strip cutting are consistent, the shaping work and cutting work are combined on one device; after adjustment, shaping and cutting can be carried out separately, and shaping and cutting can also be made Simultaneously; simple structure, easy to use and adjust.

In order to take into account the cutting function, the present invention designs two sets of guide pins 12 and guide pin bushings 13 for the upper rack 6, and additionally installs a spring 11 in the middle. Like this, when cylinder 1 action, upper tooth bar 6 will first be compressed by shaping semi-honeycomb steel belt under the effect of spring 11. If the cutting function is activated at this moment, the semi-honeycomb steel strip under the compressed state will be sheared by the cutting knife 5. After the upper rack 6 overcomes the spring force and coincides with the pressing plate 3, the upper and lower racks will completely reshape the semi-honeycomb steel belt.

The right end of pressing plate 3 is designed with the notch that cooperates with the same gap of cutter 5 widths, and two threaded holes up and down are arranged in the notch. When the cutter 5 was fixed on the upper threaded hole, the cutter 5 mouth did not have a shearing action above the upper rack 6 trapezoidal teeth, and the equipment was only used for shaping. When the cutter 5 was fixed on the lower threaded hole, the cutter 5 worked, and the equipment could only be used for cutting, or it could be used for shaping and cutting.

When the equipment is only used for shaping, segmental shaping can be carried out for longer semi-honeycomb steel belts.

The specific scheme of assembly and adjustment of the present invention:

Assembly process of the present invention:

After loading four guide sleeves 9 at both ends of the pressing plate 3, insert four guide posts 8 into the four guide sleeves 9 respectively;

Mount the top plate 2 and the bottom plate 4 with screws at both ends of the guide column 8;

Install the cylinder 1 above the top plate 2, then install the cylinder joint 10 at the protruding end of the cylinder 1, and connect the other end of the cylinder joint 10 with the pressure plate 3 with screws;

Install two guide pin bushings 13 on the pressing plate 3;

Take two guide pins 12 and pass through the pressure plate 3 from top to bottom, and then insert a spring 11 respectively, and screw them with the upper rack 6; connect the lower rack 7 with screws on the bottom plate 4;

Put the cutting knife 5 into the groove at the right end of the pressure plate 3 and lock it with bolts to complete the equipment assembly.

How to adjust the equipment:

1. Adjustment of meshing clearance of plastic rack:

First loosen the three screws fastening the lower rack 7 on the back of the bottom plate 4, and then put a semi-honeycomb steel belt on the lower rack 7 for shaping;

Start the air source, let the cylinder 1 drive the upper rack 6 to press down in place, and after observing that the two racks are meshed well, tighten the three screws on the back of the bottom plate 4 and fasten the lower rack 7.

2. Cut-off function adjustment:

In addition to the shaping function, the present invention also has the function of cutting off the semi-honeycomb steel strip.

When choosing to shape and cut off the steel strip, you only need to align the mounting hole of the cutter 5 with the threaded hole below the positioning groove at the right end of the pressing plate 3, see Figure 3, and lock it with bolts. Tool clearance is guaranteed by design and machining.

When choosing to only shape the steel strip without cutting off the function, you only need to align the mounting hole of the cutter 5 with the threaded hole in the positioning groove at the right end of the pressing plate 3, as shown in Figure 3, and lock it with bolts.

The present invention has been exemplarily described above in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited by the above methods, as long as various insubstantial improvements are adopted in the method concept and technical solutions of the present invention, or there is no improvement Directly applying the concept and technical solutions of the present invention to other occasions is within the protection scope of the present invention.

Claims (1)

1. guarantee half cellular steel band shaping, the cutting machine of forced convection even flow field, comprise horizontally disposed top board (2) andBase plate (4), described top board (2) is fixedly connected with by many leads (8) with base plate (4), described lead (8)Vertical with base plate (4) with top board (2);

It is characterized in that:

Between described top board (2) and base plate (4), the pressing plate (3) parallel with base plate (4) with top board (2) is set;

The upper fairlead (9) being fixedly connected with it that arranges of described pressing plate (3); Described fairlead (9) by pilot hole withDescribed lead (8) forms and is slidably matched;

Lower tooth bar (7) is set on described base plate (4); Upper rack (6) is set on described pressing plate (3); DescribedPressing plate (3) move under the state of lowest position, described upper rack (6) engages with lower tooth bar (7) profile of tooth;

Described shaping, cutting machine are provided with pressing plate driving mechanism;

The end of described pressing plate (3) arranges cutting knife (5), and described cutting knife (5) forms the edge of a knife with the end of lower tooth bar (7);

The upper guide finger (12) being fixedly connected with it that arranges of described upper rack (6); Described pressing plate (3) is provided with guide fingerLining (13); The epimere of described guide finger (12) and the endoporus of guide finger lining (13) form and are slidably matched; Described leadsUpper end to pin (12) is provided with dome, and protruding diameter of a circle is greater than the endoporus aperture of guide finger lining (13); In described pressureBetween plate (3) and upper rack (6), the upper pocketed springs (11) of described guide finger (12), described spring (11) is for pressingContracting spring; Under the effect of spring (11), described upper rack (6) is with pressing plate (3) at a distance of a segment distance, and described cutsThe cutting edge of cutter (5) is higher than the lower bead of upper rack (6).