Tooth plate for producing high-performance self-tapping screw

Abstract

A dental plate for producing a high performance self-tapping screw includes a primary dental plate and a secondary dental plate. A thread rolling part and a chip removal part are arranged on the opposite end surfaces of the main thread plate and the auxiliary thread plate. The main tooth plate and the auxiliary tooth plate are sequentially provided with a collecting part, a shaping part and a cutting block. And thread rolling edges are arranged on the collecting part and the shaping part. And thread rolling edges are arranged on the collecting part and the shaping part. And the shaping part is provided with a chip removal tooth groove. And double tooth sockets are arranged on the binding part. Groove expanding is carried out through the shaping part, and finally the screw is formed through the collecting part. And the cutting block is arranged at the shaping part, so that the cutting capacity of the threads is improved. A chip removal tooth groove is formed in the portion, close to the collecting portion, of the shaping portion, and the chip removal capacity of the threads is improved. And a plurality of double-tooth grooves are formed in the binding part at intervals, so that the tapping performance of the threads is improved. Screws produced by the dental plate can be formed in sequence, the self-tapping performance is high, the yield is high, and the dental plate has high practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of tooth plate moulds, in particular to a tooth plate used for producing high-performance self-tapping screws. Background Art

[0002] The tooth plate mold is used for the two rectangular templates on the thread rolling machine, one is the main tooth plate, which is fixed on the structure, and the other is the auxiliary tooth plate, which is installed on the horizontal driving mechanism. The main tooth plate and the auxiliary tooth plate are both provided with tooth patterns. The bolts are placed between the main tooth plate and the auxiliary tooth plate, and drive the auxiliary tooth plate to move laterally, forcing the bolts to be squeezed and rolled between the main tooth plate and the auxiliary tooth plate, thereby completing the thread of the outer wall of the bolt.

[0003] However, the existing screw threads often only have one specification of screw threads, which are poor in self-tapping performance and cannot be screwed into the material quickly. There is also a way to increase the self-tapping performance of the screw by adding additional screw threads. However, the existing equipment can only form one screw thread at a time. If different types of screw threads need to be added, they need to be processed separately, and the defective rate is high. Utility Model Content

[0004] In view of this, the utility model provides a thread plate for producing high-performance self-tapping screws to solve the above technical problems.

[0005] A tooth plate for producing high-performance self-tapping screws, comprising a main tooth plate and a secondary tooth plate, wherein the main tooth plate and the secondary tooth plate are each provided with a thread rolling portion on their opposite end faces, and a chip removal portion obliquely arranged on one side of the length of the main tooth plate and the secondary tooth plate, the thread rolling portions on the main tooth plate and the secondary tooth plate are sequentially provided with a gathering portion, a shaping portion, and a plurality of cutting blocks arranged at intervals at the shaping portions of the main tooth plate and the secondary tooth plate along the chip removal portion toward the other side, the gathering portion and the shaping portion are both obliquely provided with a plurality of thread rolling edges, the shaping portion is provided with a plurality of chip removal tooth grooves arranged at intervals on one side of the shaping portion close to the gathering portion, the gathering portion is provided with a plurality of double tooth grooves arranged at intervals, and the double tooth grooves are inclined in the same direction as the thread rolling edge.

[0006] Furthermore, the length of the primary tooth plate is smaller than the length of the secondary tooth plate.

[0007] Furthermore, a discharge end is provided on one side of the length of the main tooth plate.

[0008] Furthermore, the discharging end is provided with an inclination angle of 10 degrees.

[0009] Furthermore, the cross-section of the tooth-rolling edge arranged on the shaping portion away from the discharge end is triangular.

[0010] Furthermore, the cross-section of the tooth-rolling edge arranged from the middle area of ​​the shaping portion to the discharge end is trapezoidal.

[0011] Furthermore, the cutting block is arranged between the two rolling edges.

[0012] Furthermore, each of the chip removal tooth grooves is arranged between two adjacent rolling edges.

[0013] Furthermore, the inclination angle of the double tooth grooves is smaller than the inclination angle of the tooth rolling edge.

[0014] Compared with the prior art, the present invention provides a thread plate for producing high-performance self-tapping screws, which is embedded in the screw surface through the thread rolling part on the screw rod in sequence, preliminarily fixes the position of the screw, expands the groove through the shaping part, and finally forms the screw through the convergence part. The cutting block is arranged at the shaping part to improve the cutting ability of the screw thread. A plurality of chip removal tooth grooves are arranged at intervals on one side of the shaping part close to the convergence part to improve the chip removal ability of the screw thread. A plurality of double tooth grooves are arranged at intervals on the convergence part to improve the tapping performance of the screw thread. The screws produced by the thread plate can be formed in sequence, have high self-tapping performance, high yield rate, and high practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model provides a structural schematic diagram of a thread plate for producing high-performance self-tapping screws.

[0016] Figure 2 for Figure 1 Schematic diagram of the structure of part A.

[0017] Figure 3 for Figure 1 A schematic diagram of the structure of a screw produced by a threaded plate for producing high-performance self-tapping screws. DETAILED DESCRIPTION

[0018] The following is a further detailed description of the specific embodiments of the present invention. It should be understood that the description of the embodiments of the present invention herein is not intended to limit the protection scope of the present invention.

[0019] like Figures 1 to 3 As shown, it is a schematic diagram of the structure of a thread plate for producing high-performance self-tapping screws provided by the utility model. The thread plate for producing high-performance self-tapping screws includes a main thread plate 10 and a secondary thread plate 20. It can be imagined that the thread plate for producing high-performance self-tapping screws also includes some other functional structures, such as an anti-rust layer, etc., which are well known to those skilled in the art and will not be repeated here.

[0020] The main tooth plate 10 and the auxiliary tooth plate 20 are both made of metal materials, such as stainless steel. The length of the main tooth plate 10 is less than that of the auxiliary tooth plate 20, so as to ensure that the teeth are fully and completely rolled. The length structure between the main tooth plate 10 and the auxiliary tooth plate 20 is a prior art and will not be repeated here.

[0021] A discharge end 11 is provided on one side of the length of the main tooth plate 10. The discharge end 11 is used to guide the screws processed and formed to flow out of the main tooth plate 10.

[0022] See also Figure 1 , the main tooth plate 10 and the auxiliary tooth plate 20 are both provided with a rolling portion 12 and a chip removal portion 13 obliquely arranged on one side of the length of the main tooth plate 10 and the auxiliary tooth plate 20. The rolling portion 12 is provided with a gathering portion 14 and a shaping portion 15 in sequence on the side away from the chip removal portion 13. A plurality of cutting blocks 16 are arranged at intervals on the shaping portion 15 of the main tooth plate 10. A plurality of rows of anti-skid grooves 111 are arranged at intervals on the shaping portion 15 of the main tooth plate 10 and the auxiliary tooth plate 20. The anti-skid grooves 111 are used to prevent the screw 1 (see Figure 3 ) tilted when rubbing teeth.

[0023] The thread rolling portion 12 is provided with a plurality of thread rolling edges 17 which are inclined. The thread rolling portion 12 occupies the entire range of the two opposite end surfaces of the primary tooth plate 10 and the auxiliary tooth plate 20 except the convergence portion 14, that is, the thread rolling edges 17 are provided on the entire range of the two opposite end surfaces of the primary tooth plate 10 and the auxiliary tooth plate 20 except the convergence portion 14. When the primary tooth plate 10 and the auxiliary tooth plate 20 are in relative motion, the thread rolling edges 17 can move in the screw rod 1 (see Figure 3 ) and rub out the screw thread 2.

[0024] The chip removal part 13 is used to remove excess iron chips during thread rolling, so as to prevent iron chips from being retained between the primary thread plate 10 and the secondary thread plate 20 and affecting thread rolling accuracy. The primary thread plate 10 is provided with a 10-degree inclination angle at one end of the chip removal part 13 close to the side edge, so as to facilitate the sliding out of the screw after shaping. The chip removal part 13 is a prior art and will not be described in detail here.

[0025] The constricting portion 14 is used to roll the end of the screw rod 1 into a cone shape, thereby improving the self-tapping performance of the screw.

[0026] The cross section of the thread rolling edge 17 disposed on the shaping portion 15 away from the discharge end 11 is triangular, and the edges are embedded in the surface of the screw during thread rolling. The cross section of the thread rolling edge 17 disposed from the middle area of ​​the shaping portion 15 to the discharge end 11 is trapezoidal. That is, from the side away from the discharge end 11 to the side away from the discharge end 11, the cross section of the thread rolling edge 17 gradually changes from a triangle to a trapezoid, and the groove is expanded so that a complete thread 2 is gradually formed on the surface of the screw.

[0027] The cutting block 16 is arranged between the two thread rolling edges 17. The cutting block 16 is composed of two V-shaped surfaces. The cutting block 16 is used to form cutting teeth 3 on the screw thread 2 during thread rolling, thereby improving the cutting performance of the screw during self-tapping.

[0028] A plurality of chip removal tooth grooves 18 are arranged at intervals on one side of the shaping portion 15 close to the converging portion 14. Each chip removal tooth groove 18 is arranged between two adjacent rolling edges 17. The chip removal tooth groove 18 is used to form chip removal teeth 4 on the screw rod 1. The chip removal teeth 4 pass through multiple turns of the screw teeth 2, and can guide and discharge the waste chips generated during self-tapping to the outside more quickly, thereby improving the chip removal performance of the screw.

[0029] The convergence portion 14 is provided with a plurality of double tooth grooves 19 arranged at intervals, and the double tooth grooves 19 and the rolling edge 17 are inclined in the same direction. The inclination angle of the double tooth grooves 19 is smaller than the inclination angle of the rolling edge 17. The double tooth grooves 19 can form an additional set of second screw teeth 5 between two circles of the screw teeth 2, further accelerating the reaming speed when the screw is initially struck into the material.

[0030] Compared with the prior art, the present invention provides a thread plate for producing high-performance self-tapping screws, which is sequentially embedded into the screw surface through the thread rolling portion 12 on the screw rod, preliminarily fixes the position of the screw, expands the groove through the shaping portion 15, and finally forms the screw through the convergence portion 14. The cutting block 16 is provided at the shaping portion 15 to improve the cutting ability of the screw thread. A plurality of chip removal tooth grooves 18 are arranged at intervals on one side of the shaping portion 15 close to the convergence portion 14 to improve the chip removal ability of the screw thread. A plurality of double tooth grooves 19 are arranged at intervals on the convergence portion 14 to improve the tapping performance of the screw thread. The screws produced by the thread plate can be formed sequentially, have high self-tapping performance, high yield rate, and are highly practical.

[0031] The above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modification, equivalent substitution or improvement within the spirit of the present invention are included in the scope of the claims of the present invention.

Claims

1. A thread plate for producing high-performance self-tapping screws, characterized in that: The tooth plate for producing high-performance self-tapping screws includes a main tooth plate and a secondary tooth plate. The main tooth plate and the secondary tooth plate are each provided with a thread rolling portion on the opposite end faces, and a chip removal portion obliquely arranged on one side of the length of the main tooth plate and the secondary tooth plate. The thread rolling portions on the main tooth plate and the secondary tooth plate are sequentially provided with a gathering portion, a shaping portion, and a plurality of cutting blocks arranged at intervals at the shaping portions of the main tooth plate and the secondary tooth plate along the chip removal portion toward the other side. The gathering portion and the shaping portion are both obliquely provided with a plurality of thread rolling edges. The shaping portion is provided with a plurality of chip removal tooth grooves arranged at intervals on one side of the shaping portion close to the gathering portion. The gathering portion is provided with a plurality of double tooth grooves arranged at intervals, and the double tooth grooves are inclined in the same direction as the thread rolling edge.

2. The thread plate for producing high-performance self-tapping screws according to claim 1, characterized in that: The length of the primary tooth plate is smaller than the length of the secondary tooth plate.

3. The thread plate for producing high-performance self-tapping screws according to claim 1, characterized in that: A discharge end is arranged on one side of the length of the main tooth plate.

4. The thread plate for producing high-performance self-tapping screws according to claim 3, characterized in that: The discharging end is provided with an inclination angle of 10 degrees.

5. The thread plate for producing high-performance self-tapping screws according to claim 3, characterized in that: The cross section of the tooth rolling edge arranged on the shaping portion away from the discharging end is triangular.

6. The thread plate for producing high-performance self-tapping screws according to claim 3, characterized in that: The cross section of the rolling edge arranged from the middle area of ​​the shaping part to the discharging end is trapezoidal.

7. The thread plate for producing high-performance self-tapping screws according to claim 1, characterized in that: The cutting block is arranged between the two rolling edges.

8. The thread plate for producing high-performance self-tapping screws according to claim 1, characterized in that: Each of the chip removal tooth grooves is arranged between two adjacent rolling edges.

9. The thread plate for producing high-performance self-tapping screws according to claim 1, characterized in that: The inclination angle of the double tooth grooves is smaller than the inclination angle of the tooth rolling edge.

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