A steel material processing device for a bolt

Abstract

The utility model discloses a kind of steel processing devices for bolt, including outer mould, shaping die and pretreatment mould, the outer mould one end is fixed on the rack of processing device, the other end of outer mould is equipped with mounting hole, the shaping die is installed in mounting hole interior, pretreatment mould is screwed with the threaded hole on outer mould by fastening bolt passing through the counterbore above it, and shaping die is fixed in mounting hole, the middle of shaping die is equipped with horn-shaped shaping hole, the middle of pretreatment mould is equipped with pretreatment hole, multiple lugs are equipped on the circumference of pretreatment hole, the outer end of pretreatment hole is feed inlet, the end of shaping die and pretreatment mould contact is equipped with chip leakage inner groove, and the outer mould is equipped with chip leakage outer groove corresponding with chip leakage inner groove position;The mould is designed into assembly type structure, some parts can be replaced alone, avoid processing mould overall replacement, reduce maintenance cost, meanwhile, the structure effectively discharges the chip generated in processing process, improve the service life of mould overall.

Description

Technical Field

[0001] This utility model relates to the technical field of bolt steel bar processing devices, and in particular to a bolt steel processing device. Background Technology

[0002] During bolt production, the coiled steel bar raw materials need to be straightened and rust-removed. The straightening process requires the use of a mold. The diameter of the hole in the middle of the mold is smaller than the diameter of the steel bar. Under the action of the mold, the diameter of the round steel bar reaches the nominal size of the bolt. The wire drawing process removes the rust and hard skin from the surface of the steel bar, and at the same time greatly improves the tensile and shear strength of the steel bar.

[0003] Existing steel processing devices generally use molds with an integrated structure. The disadvantage of the integrated structure is that after a period of use, the central forming hole of the mold is prone to wear, which requires the entire mold to be replaced, increasing the cost of the mold. At the same time, the molds of existing processing devices are not easy to clean up waste during the steel processing process, and iron filings are easy to adhere to the area around the mold hole, forming hard spots and damaging the surface of the steel. In order to address the above problems, this application designs a steel processing device for bolts. Utility Model Content

[0004] The purpose of this invention is to provide a device for processing steel for bolts.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: A steel processing device for bolts includes an outer mold, a shaping mold, and a pre-treatment mold. One end of the outer mold is fixed to the frame of the processing device, and the other end of the outer mold has a mounting hole. The shaping mold is installed inside the mounting hole. The pre-treatment mold is threaded into a threaded hole on the outer mold by fastening bolts passing through countersunk holes on it, thus fixing the shaping mold in the mounting hole. The shaping mold has a funnel-shaped shaping hole in the middle, and the pre-treatment mold has a pre-treatment hole in the middle. Multiple protrusions are provided on the circumference of the pre-treatment hole, and the outer end of the pre-treatment hole is a feed inlet. The end of the shaping mold that contacts the pre-treatment mold has a chip-leakage inner groove. The outer mold has a chip-leakage outer groove corresponding to the position of the chip-leakage inner groove. The middle position of the connection end between the outer mold and the frame has a discharge port with a size larger than the shaping hole.

[0006] Furthermore, the outer mold has multiple evenly distributed positioning blocks in the mounting hole in the middle, and the shaping mold has positioning grooves that cooperate with the positioning blocks.

[0007] Furthermore, the protrusions include four pieces arranged in the pre-processing hole, one above the other and one to the left and right, with the protrusions in the upper and lower positions being staggered from those in the left and right positions, and a connecting groove of equal length and parallel to the center line of the pre-processing hole is provided between every two protrusions.

[0008] Furthermore, both the inlet and outlet are conical structures.

[0009] Furthermore, a connecting step is provided at the end where the outer mold connects to the frame.

[0010] In summary, the present invention has the following beneficial effects: The present invention provides a special mold structure for a bolt steel processing device. The mold is designed as an assembly structure, allowing individual parts to be replaced, avoiding the need to replace the entire processing mold, reducing maintenance costs. At the same time, the structure effectively discharges the debris generated during the processing, improving the overall service life of the mold. Attached Figure Description

[0011] Figure 1 This is a cross-sectional view of the present invention; Figure 2 This is a longitudinal sectional view of the present invention; In the diagram, 1 is the outer mold; 2 is the shaping mold; 3 is the pre-treatment mold; 4 is the pre-treatment hole; 5 is the protrusion; 6 is the feed inlet; 7 is the connecting groove; 8 is the fixing bolt; 9 is the shaping hole; 10 is the chip leakage inner groove; 11 is the positioning groove; 12 is the chip leakage outer groove; 13 is the positioning block; 14 is the discharge port; 15 is the connecting step; and 16 is the mounting hole. Detailed Implementation

[0012] The present invention will be further described in detail below with reference to the accompanying drawings. The technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0013] like Figure 1 and Figure 2As shown, a steel processing device for bolts includes an outer mold 1, a shaping mold 2, and a pre-treatment mold 3. One end of the outer mold 1 is fixed to the frame of the processing device, and the other end of the outer mold 1 has a mounting hole 16. The shaping mold 2 is installed inside the mounting hole 16. The pre-treatment mold 3 is threaded into a threaded hole on the outer mold 1 by fastening bolts 8 passing through countersunk holes on it, thus fixing the shaping mold 2 in the mounting hole 16. The shaping mold 2 has a trumpet-shaped shaping hole 9 in the middle, and the pre-treatment mold 3 has a pre-treatment hole 4 in the middle. Multiple protrusions 5 are provided on the circumference of 4. The outer end of the pretreatment hole 4 is the feed port 6. The end of the forming mold 2 that contacts the pretreatment mold 3 is provided with a chip-leaking inner groove 10. The outer mold 1 is provided with a chip-leaking outer groove 12 corresponding to the position of the chip-leaking inner groove 10. The middle position of the connection end between the outer mold 1 and the frame is provided with a discharge port 14 with a size larger than the forming hole 9. The processing device frame is an existing ordered equipment, which mainly includes a motor, a traction device for traction steel, etc., which are not disclosed here. They can be selected according to actual needs to match the mold of this technical solution.

[0014] Furthermore, such as Figure 2 As shown, the mounting hole 16 in the middle of the outer mold 1 is provided with a plurality of evenly distributed positioning blocks 13, and the shaping mold 2 is provided with positioning grooves 11 that cooperate with the positioning blocks 13. By setting the structure of positioning blocks 13 and positioning grooves 11, the rotation of the shaping mold 2 during operation is effectively prevented.

[0015] Furthermore, the protrusions 5 include four pieces arranged in the upper, lower, left, and right sides within the pre-processing hole 4, with the upper and lower protrusions 5 staggered from the left and right protrusions 5. A connecting groove 7, equal in length and parallel to the center line of the pre-processing hole 4, is provided between every two protrusions 5. The shape of the protrusions is referenced... Figure 1 As shown, its shape is a straight line structure, which effectively compresses the steel to remove the oxide layer and rust on its surface.

[0016] Furthermore, both the feed inlet 6 and the discharge outlet 14 are conical structures to facilitate the entry and exit of steel from the mold.

[0017] Furthermore, the end of the outer mold 1 that is connected to the frame is provided with a connecting step 15, and the frame is provided with a connecting groove corresponding to the connecting end of the outer mold 1, which facilitates installation and positioning.

[0018] Working principle: The entire mold is installed on the frame of the processing device. The pre-treated steel is inserted from the feed port 6. Under the action of external force, it passes through the pre-treatment hole 4 and the shaping hole 9, and then passes out from the discharge port 14. It is connected to the traction device of the processing device. The traction device pulls the steel to continue to pass through the middle of the mold. It is pre-treated by the pre-treatment mold 3. The protrusion 5 deforms the steel and removes the oxide layer on its outside. It is then shaped into the size required for the bolt by the shaping hole 9 and then discharged from the discharge port. The debris generated during the discharge process is discharged from the chip trough and the feed port.

[0019] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A device for processing steel for bolts, characterized in that: The device includes an outer mold (1), a shaping mold (2), and a pretreatment mold (3). One end of the outer mold (1) is fixed to the frame of the processing device, and the other end of the outer mold (1) has a mounting hole (16). The shaping mold (2) is installed inside the mounting hole (16). The pretreatment mold (3) is threaded into the threaded hole on the outer mold (1) by fastening bolts (8) passing through the countersunk hole on it, and the shaping mold (2) is fixed inside the mounting hole (16). The shaping mold (2) has a trumpet-shaped shaping hole in the middle. 9) The pretreatment mold (3) has a pretreatment hole (4) in the middle. Multiple protrusions (5) are provided on the circumference of the pretreatment hole (4). The outer end of the pretreatment hole (4) is the feed port (6). The end of the shaping mold (2) that contacts the pretreatment mold (3) is provided with a chip-leaking inner groove (10). The outer mold (1) is provided with a chip-leaking outer groove (12) corresponding to the position of the chip-leaking inner groove (10). The middle position of the connection end between the outer mold (1) and the frame is provided with a discharge port (14) larger than the shaping hole (9).

2. The bolt steel processing device according to claim 1, characterized in that: The outer mold (1) has a plurality of evenly distributed positioning blocks (13) in the mounting hole (16) in the middle, and the shaping mold (2) has a positioning groove (11) that cooperates with the positioning blocks (13).

3. The bolt steel processing device according to claim 2, characterized in that: The protrusion (5) includes four pieces arranged in the pre-processing hole (4), with the upper and lower protrusions and the left and right protrusions (5) being staggered. A connecting groove (7) of equal length and parallel to the center line of the pre-processing hole (4) is provided between every two protrusions (5).

4. The bolt steel processing device according to claim 3, characterized in that: Both the feed inlet (6) and the discharge outlet (14) are conical structures.

5. The bolt steel processing device according to claim 4, characterized in that: The outer mold (1) is provided with a connecting step (15) at the end where it is connected to the frame.

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