Cold heading forming rigid sealing self-locking thread sleeve

Abstract

The utility model discloses a cold heading forming rigid sealing self-locking thread sleeve, relates to the technical field of cold heading forming thread sleeves, and aims to solve the problems that in the prior art, the rigid sealing function of a hexagonal flange thread sleeve needs to be achieved through secondary machining, but the hexagonal flange thread sleeve is low in production efficiency, low in material utilization rate and the like, so that the part cost is high, and the profit is reduced. One end of the swivel nut main body is provided with a flat hexagonal flange positioning surface, the positioning surface is provided with three uniformly distributed positioning grooves, the other end of the swivel nut main body is cylindrical, the other end of an inner hole of the end is connected to a sealing surface with an inclined angle of 45 degrees, and the sealing surface is connected with the hexagonal flange positioning surface of the swivel nut main body. A front punching rod is arranged above the mold shell, the thread sleeve body is located between the front punching rod and the mold shell, an alloy end is arranged on the outer side of the mold core forming cavity, a rear hole is formed in the lower portion of the alloy end, and a conical hexagon bolt is arranged at the bottom of the rear hole.

Description

Technical Field

[0001] The utility model relates to the technical field of cold heading forming screw sleeves, in particular to a cold heading forming rigid sealing self-locking screw sleeve. Background Technique

[0002] In the lubrication system inside an automobile engine block, to ensure that clean engine oil with a certain pressure and suitable temperature can be continuously supplied to the friction surfaces of moving parts so that the engine can operate normally, the sealing performance of component connections and the anti-loosening function of threaded connections are particularly important. The oil supply end collects and calculates information through a pressure sensor and adjusts various parameters accordingly to ensure the safe operation of all parts of the engine during vehicle driving.

[0003] However, in the prior art, functions can only be achieved through secondary processing and the like. However, its low production efficiency and low material utilization rate and other disadvantages lead to high part costs and reduced profits. Therefore, it does not meet the existing requirements, and for this reason, we propose a cold heading forming rigid sealing self-locking screw sleeve. Content of the Utility Model

[0004] The purpose of the utility model is to provide a cold heading forming rigid sealing self-locking screw sleeve to solve the problems of low production efficiency and low material utilization rate in the prior art as mentioned in the above background technique, which lead to high part costs and reduced profits.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A cold heading forming rigid sealing self-locking screw sleeve, including a screw sleeve body and a die shell. One end of the screw sleeve body is provided with a flat hexagonal flange positioning surface, and there are 3 evenly distributed positioning grooves on the positioning surface. A front punch rod is arranged above the die shell, and a rear punch rod is arranged below the die shell. The screw sleeve body is located between the front punch rod and the die shell, and a die core forming cavity is arranged inside the die shell.

[0006] Preferably, an alloy end head is arranged outside the die core forming cavity, and the alloy end head is combined and connected with the die shell.

[0007] Preferably, a rear hole is arranged below the alloy end head, a tapered hexagonal bolt is arranged at the bottom of the rear hole, and the tapered hexagonal bolt is in fit connection with the rear hole.

[0008] Preferably, one end of the screw sleeve body is provided with a flat hexagonal flange positioning surface, and there are 3 evenly distributed positioning grooves on the positioning surface.

[0009] Preferably, the other end of the screw sleeve body is set as a cylindrical surface, the inner hole at one end is connected to a sealing surface at an inclined 45°, and the sealing surface is connected to the hexagonal flange positioning surface of the screw sleeve body.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0011] 1. The present utility model replaces expensive composite processing equipment with cold heading technology, greatly improving the material utilization rate and production efficiency, reducing production costs, and maintaining a stable profit level for enterprises.

[0012] 2. Through the sixth punching die of the forming machine, the blank is translated from the fifth station through the automatic feeding clamp. While the blank is fed into the sixth die to form and lock the threaded pre - hole, the rear punching rod completes the through - hole and punches out the waste inside the hole. Then, the formed blank is taken out of the die cavity by the front punching rod and stripped by the stripping plate, completing the forming of the blank except for the locking internal thread.

[0013] 3. The cylindrical surface of the present utility model is assembled into the counterbore of the cover, and is thread - connected to the valve body inside the cover. In terms of structural design, it avoids the risk of the transmission ejector rod separating from the cover, resulting in low durability or failure of the sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is the overall front view of the present utility model;

[0015] Figure 2 is the structural schematic diagram of the threaded end of the cylindrical surface of the present utility model;

[0016] Figure 3 is the sectional structural schematic diagram of the main body of the screw sleeve of the present utility model;

[0017] Figure 4 is the structural schematic diagram of the screw sleeve forming of the present utility model.

[0018] In the figure: 1. Main body of the screw sleeve; 2. Sealing surface; 3. Hexagonal flange; 4. Positioning groove; 5. Locking thread; 6. Hexagonal flange positioning surface; 7. Cylindrical surface; 8. Die shell; 9. Rear punching rod; 10. Die core forming cavity; 11. Rear hole; 12. Front punching rod; 13. Tapered hexagon bolt 12. Alloy end. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0020] Please refer to Figures 1-3, an embodiment provided by the present utility model: a cold heading forming rigid sealing self-locking screw sleeve, comprising a screw sleeve body. One end of the screw sleeve body 1 is provided with a flat hexagonal flange positioning surface 6, and there are 3 evenly distributed positioning grooves 4 on the positioning surface. A front punch 12 is arranged above the mold shell 8, and a rear punch 9 is arranged below the mold shell 8. The screw sleeve body 1 is located between the front punch 12 and the mold shell 8. An inner core forming cavity 10 is arranged inside the mold shell 8. An alloy end 14 is arranged outside the inner core forming cavity 10, and the alloy end 14 is combined and connected with the mold shell 8. A rear hole 11 is arranged below the alloy end 14. A tapered hexagonal bolt 13 is arranged at the bottom of the rear hole 11, and the tapered hexagonal bolt 13 is in fit connection with the rear hole 11.

[0021] Please refer to Figures 2-4 , the other end of the screw sleeve body 1 is set as a cylinder 7. The inside of the end is provided with a locking thread 5. The locking thread 5 extends from the end face to the other end of the main body, and is connected to an inclined 45° sealing surface 2 at the other end of the thread. The sealing surface 2 is connected to the hexagonal flange positioning surface 6 of the screw sleeve body 1.

[0022] Working principle: When in use, through the automatic feeding system of the forming machine, the coil material is fed into the cutting device of the forming machine to achieve automatic cutting and feeding according to the material volume required by the product; the material fed into the first die inlet is pushed into the die cavity by the first punch die of the forming machine to achieve pre-shaping of the two end faces, eliminate burrs, flash, etc., complete the forming of the first station, eject the formed blank to the next station, and reset to form the next product; through the second punch die of the forming machine, the blank formed in the first station is flipped by the automatic feeding clamp and fed into the second die cavity for extrusion shaping, forming a large taper chamfer at one end of the die bottom to facilitate feeding for the cylindrical surface 7 in the next die cavity, complete the forming of the second station, eject the formed blank to the next station, and reset to form the next product; through the third punch die of the forming machine, the blank formed in the second station is fed into the third die cavity by automatic feeding for extrusion shaping, extruded according to the shape of the die bottom of the die cavity, perform feeding and shaping for the forming of the cylindrical surface 7, and at the same time, the front punch rod 12 extrudes and punches a hole at the top of the blank, and the hexagonal flange 3 is preformed into a circular blank shape, complete the forming of the third station, eject the formed blank to the next station, and reset to form the next product; through the fourth punch die of the forming machine, the blank formed in the third station is fed into the fourth die cavity by automatic feeding, and the hexagonal flange 3 is further formed by the reverse extrusion of the front punch rod 12, and at the same time, the die bottom is extruded to form the cylindrical surface 7 and the inner hole, complete the forming of the fourth station; eject the formed blank to the next station, and reset to form the next product; through the fifth punch die of the forming machine, the blank formed in the fourth station is fed into the fifth die cavity by automatic feeding, and the sealing surface 2 and the hexagonal flange 3 are completely formed by the extrusion of the front punch rod 12. After the final forming of the blank for direction positioning, the blank is ejected to the next station and reset; through the sixth punch die of the forming machine, the blank is translated from the fifth station by the automatic feeding clamp, fed into the sixth die to form the prefabricated hole for the locking thread, and at the same time, the rear punch rod 9 completes the through hole and punches out the waste in the hole, and then the formed blank is taken out of the die cavity by the front punch rod 12 and stripped by the stripping plate to complete the forming of the blank except for the locking internal thread.

[0023] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, in any regard, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A cold-forged rigid sealing self-locking screw insert, comprising a screw insert body (1) and a mold shell (8), characterized in that: One end of the screw sleeve body (1) is provided with a flat hexagonal flange positioning surface (6), and the positioning surface is provided with three evenly distributed positioning grooves (4); a front punch rod (12) is provided above the mold shell (8), and a rear punch rod (9) is provided below the mold shell (8); the screw sleeve body (1) is located between the front punch rod (12) and the mold shell (8), and a core molding cavity (10) is provided inside the mold shell (8).

2. The cold-forging rigid sealing self-locking screw insert according to claim 1, characterized in that: An alloy end head (14) is arranged outside the mold core molding cavity (10), and the alloy end head (14) is assembled and connected to the mold shell (8).

3. The cold-forging rigid sealing self-locking screw sleeve according to claim 2, characterized in that: A rear hole (11) is provided below the alloy end cap (14), a conical hexagonal bolt (13) is provided at the bottom of the rear hole (11), and the conical hexagonal bolt (13) is fitted and connected to the rear hole (11).

4. The cold-forging rigid sealing self-locking screw sleeve according to claim 1, characterized in that: One end of the screw sleeve body (1) is provided with a flat hexagonal flange positioning surface (6), and the positioning surface is provided with three evenly distributed positioning grooves (4).

5. The cold-forging rigid sealing self-locking screw insert according to claim 4, characterized in that: The other end of the screw sleeve body (1) is arranged as a cylindrical surface (7), and the other end of the inner hole of the end is connected to a sealing surface (2) inclined at 45 degrees, and the sealing surface (2) is connected to a hexagonal flange positioning surface (6) of the screw sleeve body (1).

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