Special fast tapping screw forming die and special fast tapping screw

Abstract

The utility model relates to the technical field of screw production, and discloses a special fast-tapping screw forming die and a special fast-tapping screw, the special fast-tapping screw forming die comprises a die body, the die body is provided with a single thread forming area and a composite thread forming area along the width direction of the die body, the single thread forming area and the composite thread forming area are continuously arranged in the width direction of the mold body; the single thread forming area is used for forming a single type of threads, and the composite thread forming area is used for forming two types of threads; due to the fact that the composite thread forming area is arranged on the die body, integrated machining and one-time forming of two kinds of threads can be achieved, screw machining procedures are reduced, and meanwhile screw machining efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of screw production, in particular to a special quick-attack screw forming die and a special quick-attack screw. Background Art

[0002] Quick-attack screws are common fasteners in daily life and are often used in interior decoration and the assembly and fixing of wooden furniture. When connecting hard wood, ordinary quick-attack screws have no cutting function in the thread, resulting in high resistance during installation and difficulty in installation. They may even damage the tail of the screw and cause the wood to crack. To this end, the present invention proposes a special quick-attack screw, redesigns the tail of the screw, and proposes a forming mold for producing the special quick-attack screw. Utility Model Content

[0003] In order to solve the problems existing in the prior art, the utility model provides a special quick-attack screw forming die and a special quick-attack screw with novel structural design.

[0004] The technical solution of the utility model is as follows:

[0005] A special quick-attack screw forming mold includes a mold body, wherein the mold body is provided with a single thread forming area and a composite thread forming area along its width direction, and the single thread forming area and the composite thread forming area are arranged continuously in the width direction of the mold body; the single thread forming area is used to form a single type of thread, and the composite thread forming area is used to form two types of threads.

[0006] Furthermore, the single thread forming area is a mechanical thread continuously arranged along the width direction of the mold body.

[0007] Furthermore, the composite thread forming area includes a mechanical tooth 1 continuously arranged along the width direction of the mold body and a mechanical tooth 2 arranged crosswise with the mechanical tooth 1.

[0008] Furthermore, a plurality of the mechanical teeth 2 are arranged at equal intervals along the length direction of the mold body in the composite thread forming area.

[0009] Furthermore, the mold body is tilted at the edge of the composite thread forming area to form a screw tip tail structure.

[0010] Furthermore, the mold body is provided with an introduction area, a forming area and a discharge area along its length direction; the introduction area is arranged obliquely upward, the forming area is arranged horizontally, and the discharge area is arranged obliquely downward.

[0011] Furthermore, the tooth depths of the mechanical tooth 1 and the mechanical tooth 2 decrease in the lead-in area, the forming area, and the discharge area respectively.

[0012] A special quick-attack screw comprises a screw head, a polished rod, a threaded portion and a compound threaded portion. The threaded portion is provided with a first spiral cutting line, the compound threaded portion is provided with a first spiral cutting line and a second spiral cutting line. The first spiral cutting line of the threaded portion and the first spiral cutting line of the compound threaded portion are continuously arranged, and the first spiral cutting line of the compound threaded portion and the second spiral cutting line are cross-arranged.

[0013] Furthermore, the end of the composite threaded portion is a screw tip tail structure.

[0014] The beneficial effects of the utility model are as follows:

[0015] 1) The utility model provides a composite thread forming area on the mold body, thereby realizing integrated processing of two threads and forming them in one step, thereby reducing the screw processing steps and improving the efficiency of screw processing.

[0016] 2) The utility model provides a professional quick-attack screw, which adds a screw structure to the tail of the ordinary quick-attack screw, thereby improving the driving speed and driving effect of the screw. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the top structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the front structure of the utility model;

[0019] Figure 3 This is a side view of the structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the special quick-attack screw of the utility model;

[0021] In the figure: 1. Mold body; 101. Single thread forming area; 102. Composite thread forming area; 103. Inlet area; 104. Forming area; 105. Discharge area; 2. Mechanical tooth 1; 3. Mechanical tooth 2; 4. Screw head; 5. Polished rod; 6. Spiral cutting line 1; 7. Spiral cutting line 2; 8. Screw tip and tail structure. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the accompanying drawings.

[0023] like Figure 1 As shown, a special quick-attack screw forming mold includes a mold body 1. The mold body 1 is provided with a single thread forming area 101 and a composite thread forming area 102 along its width direction. The single thread forming area 101 is used to form a single type of thread, and the composite thread forming area 102 is used to form two types of threads.

[0024] The single thread forming area 101 is a mechanical tooth 1 2 continuously arranged along the width direction of the mold body, wherein the mechanical tooth 1 is a conventional structure and can be arranged as needed for forming a single thread.

[0025] The composite thread forming area 102 includes a mechanical tooth 2 continuously arranged along the width direction of the mold body and a mechanical tooth 2 3 arranged crosswise with the mechanical tooth 2; wherein the mechanical tooth 1 is a conventional structure and has the same size and type as the mechanical tooth 1 of the single thread forming area 101, so that the mechanical tooth 1 forming threads on the single thread forming area 101 and the composite thread forming area 102 are the same and continuous.

[0026] Several linear grooves are provided on the mechanical tooth 1 2 of the composite thread forming area 102, and mechanical tooth 2 3 is formed between two adjacent linear grooves; several mechanical teeth 2 3 are provided at equal intervals along the length direction of the mold body in the composite thread forming area 102 for forming another type of thread.

[0027] like Figure 3 As shown, the edge of the composite thread forming area 102 on the mold body 1 is tilted to form a screw tip tail structure, which is a common structure of quick-attack screws and also a structure on ordinary quick-attack screw forming dies.

[0028] like Figure 2 As shown, the mold body 1 is provided with an introduction area 103, a forming area 104 and a discharge area 105 along its length direction; the introduction area 103 is arranged upwardly, the forming area 104 is arranged horizontally, and the discharge area 105 is arranged downwardly; the tooth depths of the mechanical tooth 1 2 and the mechanical tooth 2 3 in the introduction area 103, the forming area 104 and the discharge area 105 decrease successively.

[0029] like Figure 4 As shown, a special quick-attack screw includes a screw head 4, a polished rod 5, a threaded portion and a compound threaded portion. The threaded portion is provided with a spiral cutting line 1 6, and the compound threaded portion is provided with a spiral cutting line 1 6 and a spiral cutting line 2 7. The spiral cutting line 1 6 of the threaded portion and the spiral cutting line 1 6 of the compound threaded portion are continuously arranged. The spiral cutting line 1 6 and the spiral cutting line 2 7 of the compound threaded portion are cross-arranged and the end of the compound threaded portion is a screw tip tail structure 8. When the screw is quickly attacked, the screw tip tail structure 8, the spiral cutting line 1 6 and the spiral cutting line 2 7 work together to increase the attack speed.

[0030] The above embodiments are only preferred embodiments of the present invention and are not limitations on the technical solutions of the present invention. Any technical solution that can be implemented on the basis of the above embodiments without creative work should be deemed to fall within the scope of protection of the patent of the present invention.

Claims

1. A special quick-attack screw forming die, characterized in that: The mold body (1) comprises a mold body (1), wherein the mold body (1) is provided with a single thread forming area (101) and a composite thread forming area (102) along its width direction, and the single thread forming area (101) and the composite thread forming area (102) are arranged continuously in the width direction of the mold body; the single thread forming area (101) is used to form a single type of thread, and the composite thread forming area (102) is used to form two types of threads.

2. A special quick-attack screw forming die according to claim 1, characterized in that: The single thread forming area (101) is a mechanical tooth (2) continuously arranged along the width direction of the mold body.

3. A special quick-attack screw forming die according to claim 1, characterized in that: The composite thread forming area (102) comprises a mechanical tooth 1 (2) continuously arranged along the width direction of the mold body and a mechanical tooth 2 (3) arranged crosswise with the mechanical tooth 1 (2).

4. A special quick-attack screw forming die according to claim 3, characterized in that: The mechanical teeth (2) (3) are arranged in a plurality of equal intervals along the length direction of the mold body in the composite thread forming area (102).

5. The special quick-attack screw forming die according to claim 1, characterized in that: The mold body (1) is tilted at the edge of the composite thread forming area (102) to form a screw tip tail structure.

6. The special quick-attack screw forming die according to claim 1, characterized in that: The mold body (1) is provided with an introduction area (103), a forming area (104) and a discharge area (105) along its length direction; the introduction area (103) is arranged obliquely upward, the forming area (104) is arranged horizontally, and the discharge area (105) is arranged obliquely downward.

7. The special quick-attack screw forming die according to claim 4, characterized in that: The tooth depths of the mechanical tooth 1 (2) and the mechanical tooth 2 (3) decrease in the inlet area (103), the forming area (104), and the discharge area (105) in sequence.

8. A special quick-attack screw processed by the mold according to any one of claims 1 to 7, characterized in that: The invention comprises a screw head (4), a smooth rod portion (5), a threaded portion and a composite threaded portion, wherein the threaded portion is provided with a spiral cutting line 1 (6), the composite threaded portion is provided with a spiral cutting line 1 (6) and a spiral cutting line 2 (7), the spiral cutting line 1 (6) of the threaded portion and the spiral cutting line 1 (6) of the composite threaded portion are continuously arranged, and the spiral cutting line 1 (6) of the composite threaded portion and the spiral cutting line 2 (7) are cross-arranged.

9. A special quick-attack screw according to claim 8, characterized in that: The end of the composite threaded portion is a screw tip tail structure (8).

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