Pretreatment device for three-edge drill rod before forging

Abstract

The utility model discloses a three-edged drill rod pre-treatment device before forging, which comprises a base, a die box is fixed on the surface of the base, a triangular prism die hole is arranged in the die box, a triangular prism die core is arranged in the triangular prism die hole, three edges of the triangular prism die hole and the triangular prism die core are all filleted corners, and the triangular prism die hole and the triangular prism die core are respectively provided with a triangular prism. Compared with the prior art, the pretreatment device for the triangular drill rod before forging has the advantages that the triangular prism blank is inserted into the upsetting gap and matched with the movement of the pressing block, so that the triangular prism blank can be pressed into the upsetting gap, and the upsetting gap is formed between the triangular prism die hole and the triangular prism die core. The triangular prism blank body can be upset into the shape of an upset gap, so that three edges of the triangular prism blank body are all filleted corners, and the phenomenon of edge curling is avoided. Meanwhile, the device further utilizes an electric heating device to heat the triangular prism mold core, so that the plasticity of the triangular prism mold core is improved, and subsequent forging processing can be more quickly carried out.

Description

Technical Field

[0001] The utility model relates to the technical field of triangular drill rod processing, in particular to a pre-processing device before forging a triangular drill rod. Background Art

[0002] Chinese utility model patent application number 201520057086.1 discloses a triangular, one-piece drill pipe. The outer surface of the drill pipe body is a triangular prism structure with rounded corners. The ends of the drill pipe body are heated and necked to form the one-piece triangular drill pipe. Regarding this prior art, the inventor believes that when the triangular prism structure is directly forged, its sharp edges tend to blend together, making subsequent forging difficult. For example, the forging process for a one-piece triangular drill pipe in Chinese invention patent application number 201510428117.4 also raises related issues.

[0003] The inventors have conducted extensive searches on the above-mentioned issues and found that there are relatively few technologies for rounding the corners of triangular drill rods before forging. Therefore, the purpose of this application is to propose a pre-treatment device for triangular drill rods before forging to further improve the processing technology of triangular drill rods. This application was created under such circumstances. Utility Model Content

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a pre-treatment device for a triangular drill rod before forging to solve the above problem.

[0005] To achieve the above-mentioned purpose, the utility model provides a pretreatment device for forging a triangular drill rod, comprising a base, a mold box fixed to the surface of the base, a triangular prism mold hole provided in the mold box, a triangular prism mold core provided in the triangular prism mold hole, the three edges of the triangular prism mold hole and the triangular prism mold core are all rounded, and an upset gap for inserting a triangular prism blank is formed between the triangular prism mold hole and the triangular prism mold core, a pressing block is movably provided at one end of the upset gap, and an upset baffle is movably provided at the other end of the upset gap.

[0006] Preferably, the base is fixed with a fixing seat at one end of the pressing block, one end of the triangular prism mold core is fixedly connected to the fixing seat, and a first telescopic cylinder is connected between the pressing block and the fixing seat.

[0007] Preferably, two guide rails are fixed on both sides of the mouth of the mold box, and the upsetting baffle is slidably installed between the two guide rails.

[0008] Preferably, the guide rail is arranged vertically, a slide groove is provided on the surface of the base, and a second telescopic cylinder is connected between the upsetting baffle and the bottom of the slide groove.

[0009] Preferably, an electric heating device is provided inside the triangular prism mold core.

[0010] Preferably, the electric heating device is an electric heating tube structure installed inside the triangular prism mold core.

[0011] Compared with existing technologies, this invention offers the following advantages: A pre-forging device for a triangular drill rod inserts a triangular prism blank into an upset void and, in conjunction with the movement of a pressing block, upsets the blank into the shape of the upset void. This results in rounded corners on all three edges after forming, preventing curling. Furthermore, the device utilizes an electric heater to heat the triangular prism die core, increasing its plasticity and facilitating faster subsequent forging. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0014] Figure 2 This is a schematic diagram of the internal structure of the mold box of the present invention.

[0015] Figure 3 This is another three-dimensional structural schematic diagram of the present utility model.

[0016] Figure 4 This is another three-dimensional structural diagram of the utility model.

[0017] Figure 5 This is a schematic diagram of the triangular prism mold core structure of the present utility model.

[0018] In the figure: 10, base; 11, fixing seat; 12, slide; 20, mold box; 21, triangular prism mold hole; 22, guide rail; 30, triangular prism mold core; 40, triangular prism embryo; 50, upsetting gap; 60, pressing block; 61, first telescopic cylinder; 70, upsetting baffle; 71, second telescopic cylinder; 80, electric heating device. DETAILED DESCRIPTION

[0019] The following is combined with Figure 1-5 The specific implementation methods of the present utility model are further described in detail.

[0020] Depend on Figure 1-5The utility model provides a pretreatment device before forging a triangular drill rod, comprising a base 10, a mold box 20 is fixed to the surface of the base 10, a triangular prism mold hole 21 is provided in the mold box 20, a triangular prism mold hole 21 is provided in the triangular prism mold core 30, the three edges of the triangular prism mold hole 21 and the triangular prism mold core 30 are all rounded, and an upsetting gap 50 for inserting a triangular prism blank 40 is formed between the triangular prism mold hole 21 and the triangular prism mold core 30, one end of the upsetting gap 50 is movably provided with a pressing block 60, the shape of the pressing block 60 is consistent with the shape of the upsetting gap 50, and the other end of the upsetting gap 50 is movably provided with an upsetting baffle 70.

[0021] When the present invention is in use, first, the triangular prism blank 40 is inserted into the mold box 20 from one end of the upsetting gap 50, and then the mouth of the upsetting gap 50 is blocked by the upsetting baffle 70, and then the pressing block 60 is moved from the other end into the upsetting gap 50. Since the mouth of the upsetting gap 50 is blocked by the upsetting baffle 70, the triangular prism blank 40 is squeezed inside the upsetting gap 50 and finally upset into the shape of the upsetting gap 50. The three edges of the upsetting triangular prism blank 40 are all rounded, which can prevent the problem of curling during subsequent forging processing.

[0022] Specifically, the base 10 is located at one end of the pressing block 60 and is fixed with a fixing seat 11, one end of the triangular prism mold core 30 is fixedly connected to the fixing seat 11, and a first telescopic cylinder 61 is connected between the pressing block 60 and the fixing seat 11. It can be understood that both ends of the triangular prism mold hole 21 are open, and one end of the triangular prism mold core 30 is fixed to the fixing seat 11 through one end of the triangular prism mold hole 21. The upsetting gap 50 formed between the triangular prism mold hole 21 and the triangular prism mold core 30 can be used for the insertion of the triangular prism embryo 40, and the pressing block 60 can extrude the triangular prism embryo 40 by moving in the upsetting gap 50, so that the triangular prism embryo 40 is extruded into a desired shape.

[0023] In some embodiments, two guide rails 22 are fixed on both sides of the mouth of the mold box 20, and the upsetting baffle 70 is slidably installed between the two guide rails 22. The guide rails 22 are vertically arranged, and a slide groove 12 is provided on the surface of the base 10. A second telescopic cylinder 71 is connected between the upsetting baffle 70 and the bottom of the slide groove 12. At the beginning, the upsetting baffle 70 is hidden in the slide groove 12. After the triangular prism embryo 40 is inserted into the upsetting gap 50, the second telescopic cylinder 71 can drive the upsetting baffle 70 to move upward and block one end of the upsetting gap 50. When the upsetting is completed, the second telescopic cylinder 71 drives the upsetting baffle 70 to move downward, and then continues to extend through the first telescopic cylinder 61 to push the formed triangular prism embryo 40 outward for a distance through the pressing block 60, and the triangular prism embryo 40 can be taken out by clamps.

[0024] In order to make the triangular prism embryo 40 easier to be upset and shorten the upsetting time, an electric heating device 80 is provided inside the triangular prism mold core 30. The triangular prism mold core 30 can be heated by the electric heating device 80. In this way, when the triangular prism embryo 40 is inserted into the upsetting gap 50, the plasticity of the triangular prism embryo 40 can be increased by electric heating.

[0025] In some embodiments, the electric heating device 80 is an electric heating pipe structure installed inside the triangular prism mold core 30 .

[0026] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A pre-treatment device for triangular drill rod forging, characterized in that: The invention comprises a base (10), a mold box (20) is fixed on the surface of the base (10), a triangular prism mold hole (21) is provided in the mold box (20), a triangular prism mold core (30) is provided in the triangular prism mold hole (21), three edges of the triangular prism mold hole (21) and the triangular prism mold core (30) are all rounded, and an upset gap (50) for inserting a triangular prism embryo (40) is formed between the triangular prism mold hole (21) and the triangular prism mold core (30), one end of the upset gap (50) is movably provided with a pressing block (60), and the other end of the upset gap (50) is movably provided with an upset baffle (70).

2. A pre-treatment device for triangular drill rod forging according to claim 1, characterized in that: The base (10) is located at one end of the pressing block (60) and is fixed with a fixing seat (11); one end of the triangular prism mold core (30) is fixedly connected to the fixing seat (11); and a first telescopic cylinder (61) is connected between the pressing block (60) and the fixing seat (11).

3. The pre-forging pretreatment device for a triangular drill rod according to claim 1, characterized in that: Two guide rails (22) are fixed on both sides of the mouth of the mold box (20), and the upset baffle (70) is slidably installed between the two guide rails (22).

4. A pre-treatment device for triangular drill rod forging according to claim 3, characterized in that: The guide rail (22) is vertically arranged, a slide groove (12) is provided on the surface of the base (10), and a second telescopic cylinder (71) is connected between the upsetting baffle (70) and the bottom of the slide groove (12).

5. The pre-forging pretreatment device for a triangular drill rod according to claim 1, characterized in that: An electric heating device (80) is provided inside the triangular prism mold core (30).

6. A pre-treatment device for triangular drill rod forging according to claim 5, characterized in that: The electric heating device (80) is an electric heating pipe structure installed inside the triangular prism mold core (30).

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