A compression mold for manufacturing a spiral machine blade

Abstract

The utility model discloses a kind of compression moulds for manufacturing spiral machine blade, comprising: upper die and lower die, the upper die is fixed on the sliding block of press, the lower die is fixed on the work platform of the press, and quick forming structure is provided between the upper die and the lower die;The quick forming structure includes the shaping structure for cooperating with spiral product, the knife edge group for pressing plane raw material into spiral and the guide structure for the up-down movement of the knife edge group;The knife edge group includes two sets of upper knife edge and lower knife edge corresponding to each other;The guide structure includes two pairs of guide rails;The shaping structure includes an intermediate positioning block and two side positioning blocks.By the above-mentioned mode, the utility model discloses a kind of compression moulds for manufacturing spiral machine blade, the compression mould adopts quick forming structure, can improve the speed of spiral machine blade manufacturing, make up the defect when manufacturing spiral machine blade of existing shield machine.

Description

Technical Field

[0001] This utility model belongs to the field of tunnel boring machine manufacturing, specifically relating to a molding die for manufacturing auger blades. Background Technology

[0002] The screw conveyor is a core structure in a tunnel boring machine (TBM), often referred to as the TBM's "throat" or "lifeline."

[0003] The screw conveyor mainly uses the screw blades to continuously and controllably transport the excavated soil cut by the cutterhead from the front of the tunnel boring machine to the rear of the tunnel boring machine, and plays a key role in balancing soil pressure and preventing water and sand inrush during the process.

[0004] The existing manufacturing methods for the spiral convection blades of tunnel boring machines are mainly casting and welding. When casting, the molten metal will produce internal or surface pores due to shrinkage and gas release during the cooling and solidification process. These pores will become stress concentration points, which will quickly develop into cracks under alternating loads, leading to blade breakage. At the same time, the complex spiral surface is prone to generating thermal stress during solidification, leading to thermal cracks. When welding, the spiral convection blades used in tunnel boring machines are large, so the blades need to be made into several sections and then welded together, which is very troublesome. Utility Model Content

[0005] The main technical problem solved by this utility model is to provide a die for manufacturing screw conveyor blades, which can improve the manufacturing speed of screw conveyor blades.

[0006] To solve the above-mentioned technical problems, the present invention provides a technical solution: a mold for manufacturing screw conveyor blades, comprising: an upper mold and a lower mold, wherein the upper mold is fixed on the sliding block of the press, the lower mold is fixed on the working platform of the press, and a rapid prototyping structure is provided between the upper mold and the lower mold; The rapid prototyping structure includes a shaping structure for cooperating with the spiral finished product, a cutting edge assembly for pressing the planar raw material into a spiral shape, and a guide structure for the vertical movement of the cutting edge assembly. The fixed structure includes a central positioning block and two side positioning blocks; The cutting edge group includes two sets of corresponding upper and lower cutting edges; The guide structure includes two pairs of guide rails.

[0007] In a preferred embodiment of this utility model, the intermediate positioning block and the two side positioning blocks are respectively fixed on the lower template. The intermediate positioning block is provided with an included angle corresponding to the spiral finished product. The two side positioning blocks are respectively located on both sides of the intermediate positioning block and cooperate with the included angle. The two side positioning blocks and the intermediate positioning block have mounting grooves on their opposite surfaces.

[0008] In a preferred embodiment of the present invention, the intermediate positioning block and the two side positioning blocks are fixedly connected by two fixed connecting pieces disposed on the top.

[0009] In a preferred embodiment of this utility model, the two pairs of guide rails are respectively installed in the mounting groove.

[0010] In a preferred embodiment of this utility model, the upper cutting edge is fixed to the bottom of the upper template to form the upper mold, and the lower cutting edge is fixed on the lower template to form the lower mold together with the shaping structure. The lower cutting edge is located between the two corresponding guide rails.

[0011] In a preferred embodiment of this utility model, the upper cutting edge is slidably connected to the guide rail.

[0012] The beneficial effects of this utility model are: This utility model provides a mold for manufacturing auger blades. The mold adopts a rapid prototyping structure, which can improve the manufacturing speed of auger blades and make up for the defects in the manufacturing of existing auger blades for tunnel boring machines. Attached Figure Description

[0013] Figure 1 An exploded view of a die used to manufacture screw conveyor blades.

[0014] Figure 2 This is a perspective view of a die used to manufacture blades for a screw conveyor.

[0015] The components in the attached diagram are labeled as follows: 1. Upper template; 2. Lower template; 3. Upper cutting edge; 4. Lower cutting edge; 5. Middle positioning block; 6. Side positioning block; 7. Mounting groove; 8. Guide rail; 9. Fixing connecting piece. Detailed Implementation

[0016] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0017] Please see Figure 1 and Figure 2 The embodiments of this utility model include: A die for manufacturing spiral turbine blades includes an upper die and a lower die. The upper die is fixed on a sliding block of a press, and the lower die is fixed on the working platform of the press. A rapid prototyping structure is provided between the upper die and the lower die. The rapid prototyping structure includes a shaping structure for cooperating with the spiral finished product, a blade assembly for pressing the planar raw material into a spiral shape, and a guide structure for the vertical movement of the blade assembly. This method can improve the manufacturing speed of spiral turbine blades and overcome the defects in the manufacturing of spiral turbine blades for tunnel boring machines.

[0018] The shaping structure includes a central positioning block 5 and two side positioning blocks 6. The central positioning block 5 and the two side positioning blocks 6 are respectively fixed on the lower template 2. The central positioning block has an included angle corresponding to the spiral finished product. The included angle is adjusted according to the spiral finished product to be manufactured.

[0019] The two side positioning blocks 6 are located on both sides of the middle positioning block 5 and cooperate with the included angle. The guide rails 8 in the two opposite mounting grooves 7 are parallel to each other, which facilitates the up and down movement of the upper blade 3.

[0020] The two side positioning blocks 6 and the middle positioning block 5 have mounting grooves 7 on their opposite surfaces, and the mounting grooves 7 are used for mounting the guide rail 8.

[0021] The intermediate positioning block 5 and the two side positioning blocks 6 are fixedly connected by two fixed connecting pieces 9 set at the top. The fixed connecting pieces 9 and the lower template 2 are respectively connected to the upper and lower sides of the intermediate positioning block 5 and the two side positioning blocks 6, thereby making the structure of the intermediate positioning block 5 and the two side positioning blocks 6 more stable.

[0022] The guide structure includes two pairs of guide rails 8, which are respectively installed in the mounting groove 7. The guide rails 8 make the upper cutting edge 3 more stable when it moves up and down, and avoid deviation when the upper cutting edge 3 falls, which would cause damage between the upper cutting edge 3 and the lower cutting edge 4, thereby reducing the service life of the die.

[0023] The cutting edge group includes two sets of corresponding upper cutting edge 3 and lower cutting edge 4, and the inclination angle of the cutting edge in the two sets of cutting edge groups is the same.

[0024] The upper cutting edge 3 is fixed to the bottom of the upper template 1 to form the upper mold, and the lower cutting edge 4 is fixed on the lower template 2 to form the lower mold together with the shaping structure. The lower cutting edge 4 is located between the two corresponding guide rails 8.

[0025] The upper cutting edge 3 is slidably connected to the guide rail 8. During operation, the upper cutting edge 3 moves vertically up and down with the upper mold, which is the main action for applying pressure. The lower cutting edge 4 is stationary on the lower mold. Its main function is to support the raw material being pressed and cooperate with the upper cutting edge 3 to complete the molding process.

[0026] Unlike existing technologies, this utility model provides a molding die for manufacturing auger blades. The molding die adopts a rapid prototyping structure, which can improve the manufacturing speed of auger blades and make up for the defects in the manufacturing of existing auger blades for tunnel boring machines.

[0027] In the description of this utility model, it should be noted that all components are general standard parts or components known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional test methods. The terms "upper", "lower", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A die for manufacturing screw conveyor blades, comprising: An upper mold and a lower mold, wherein the upper mold is fixed on the sliding block of the press and the lower mold is fixed on the working platform of the press, characterized in that a rapid prototyping structure is provided between the upper mold and the lower mold; The rapid prototyping structure includes a shaping structure for cooperating with the spiral finished product, a cutting edge assembly for pressing the planar raw material into a spiral shape, and a guide structure for the vertical movement of the cutting edge assembly. The fixed structure includes a central positioning block and two side positioning blocks; The cutting edge group includes two sets of corresponding upper and lower cutting edges; The guide structure includes two pairs of guide rails.

2. A die for manufacturing screw conveyor blades according to claim 1, characterized in that, The intermediate positioning block and the two side positioning blocks are respectively fixed on the lower template. The intermediate positioning block has an included angle corresponding to the spiral finished product. The two side positioning blocks are respectively located on both sides of the intermediate positioning block and cooperate with the included angle. The two side positioning blocks and the intermediate positioning block have mounting grooves on their opposite surfaces.

3. A die for manufacturing screw conveyor blades according to claim 2, characterized in that, The middle positioning block and the two side positioning blocks are fixedly connected by two fixed connecting pieces set on the top.

4. A die for manufacturing screw conveyor blades according to claim 3, characterized in that, The two pairs of guide rails are respectively installed in the mounting slots.

5. A die for manufacturing screw conveyor blades according to claim 4, characterized in that, The upper cutting edge is fixed to the bottom of the upper template to form the upper mold, and the lower cutting edge is fixed on the lower template to form the lower mold together with the shaping structure. The lower cutting edge is located between the two corresponding guide rails.

6. A die for manufacturing screw conveyor blades according to claim 5, characterized in that, The upper cutting edge is slidably connected to the guide rail.

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