A thread forming mechanism and method

Abstract

The present invention discloses a thread forming mechanism and method, which is used to form threads on a connecting member, and the forming mechanism includes a first thread plate and a second thread plate, the first thread plate and the second thread plate are arranged relative to each other, so as to form a gap for the connecting member to pass through; the first thread plate and the second thread plate are provided with corresponding first threaded parts and second threaded parts on the inner side walls, and the tail end of the first threaded part partially overlaps with the head end of the second threaded part; the inner side walls of the first thread plate and the second thread plate are respectively in contact with the connecting member; the first thread plate can move relative to the second thread plate, so as to drive the connecting member to rotate around its own axis. The present invention includes at least the following advantages: by adopting the setting of the thread plate, there is no need to clamp the two ends of the connecting member, and by using the relative movement of the two thread plates, both the positioning of the connecting member and the forming process of the thread on the connecting member are completed, and the design is optimized.

Description

Technical Field

[0001] The invention relates to the technical field of jigs, and in particular to a forming mechanism and method for threads. Background Art

[0002] The description in this section merely provides background information related to the present disclosure and does not constitute prior art.

[0003] Threads are usually found on bolts, screws, nuts and other connectors, and are used to connect or lock external parts. They are widely used. Some of the above connectors may have two or more different threads at the same time to meet the needs. In the prior art, two devices are usually used to perform the thread rolling process in sequence to complete the presentation of the two threads. The above production process faces the disadvantages of low efficiency, multiple equipment, long product operation cycle and high cost.

[0004] The above-mentioned equipment usually fixes the connector by clamping and then docks with the thread rolling equipment. Since the thread rolling process requires a good straightness guarantee, for the connector with a relatively long length, not only is the clamping and adjustment difficult, but the straightness guarantee is also low, resulting in a low pass rate of the thread rolling process.

[0005] It should be noted that the above introduction to the technical background is only for the convenience of providing a clear and complete description of the technical solutions of the present invention and for the convenience of understanding by those skilled in the art. It cannot be considered that the above technical solutions are well known to those skilled in the art simply because these solutions are described in the background technology section of the present invention. Summary of the invention

[0006] In order to overcome the defects in the prior art, an embodiment of the present invention provides a mechanism and method for thread forming, which adopts the setting of a thread rolling plate, does not need to clamp the two ends of the connecting piece, and utilizes the relative movement of the two thread rolling plates to complete the positioning of the connecting piece and the forming process of the thread on the connecting piece, thereby optimizing the design.

[0007] The embodiment of the present application discloses: a thread forming mechanism for forming a thread on a connecting piece, comprising a first thread rolling plate and a second thread rolling plate extending along a moving direction of the connecting piece,

[0008] The first threading plate and the second threading plate are arranged opposite to each other, so as to form a gap for the connecting member to pass through;

[0009] The inner side walls of the first and second rolling plates are both provided with corresponding first and second threaded portions, and the tail end of the first threaded portion partially overlaps the head end of the second threaded portion;

[0010] The inner side walls of the first rubbing plate and the second rubbing plate are respectively in contact with the connecting member;

[0011] The first rubbing plate can move relative to the second rubbing plate along the movement direction of the connecting member, thereby driving the connecting member to rotate around its own axis in the movement direction.

[0012] Further, the first rubbing plate and the second rubbing plate both have a first end and a second end in the movement direction of the connecting member, and the second end of the first rubbing plate is arranged corresponding to the first end of the second rubbing plate before moving.

[0013] Furthermore, the first threaded portion and the second threaded portion are staggered along an extension direction of the connecting member.

[0014] Furthermore, a height adjusting member extending along the movement direction of the connecting member is provided on the inner side walls of the first rubbing plate and the second rubbing plate, and the height adjusting member is located between the first threaded portion and the second threaded portion in a direction perpendicular to the extension direction of the connecting member.

[0015] Furthermore, the height adjusting member includes a pad block detachably connected to the first rubbing plate or the second rubbing plate.

[0016] Furthermore, the height adjusting member is respectively arranged corresponding to the first threaded member and the second threaded member in the movement direction of the connecting member.

[0017] The present invention also discloses a method for thread forming, comprising the following steps:

[0018] The first rubbing plate and the second rubbing plate are arranged opposite to each other;

[0019] The connecting member is placed between the first rubbing plate and the second rubbing plate, and the first rubbing plate and the second rubbing plate are respectively in contact with the connecting member;

[0020] The first threading plate is moved relative to the second threading plate along the movement direction of the connecting member to drive the connecting member disposed between the first threading plate and the second threading plate to rotate around its own axis, so that the first thread and the second thread are sequentially formed on the connecting member.

[0021] Further, in the step of "placing a connecting member between the first rubbing plate and the second rubbing plate", a vertical distance between the first rubbing plate and the second rubbing plate is smaller than a diameter of the connecting member.

[0022] Furthermore, in the step of "moving the first threading plate relative to the second threading plate along the movement direction of the connecting member", a height adjusting member is used to abut against the outer wall of the connecting member, so that the height of the connecting member can be consistent in a space perpendicular to its own axis, so as to smoothly transition the connecting member from the first threaded portion to the second threaded portion.

[0023] By means of the above technical solution, the beneficial effects of the present invention are as follows:

[0024] 1. In the present application, the first thread plate and the second thread plate are provided, and the first thread plate and the second thread plate are abutted against the outer wall of the bolt, so that the fixing area is large, and the fixing method of the two ends of the original bolt is replaced. The fixing method of the present application can be applied to bolts of different lengths, and avoids the disadvantage of high precision requirements for end fixing in the prior art;

[0025] 2. The present application provides a pad block, and the height of the pad block protruding from the inner surface of the first thread plate or the second thread plate in the front-to-back direction can be adjusted according to needs, so as to adjust the depth of the first thread and / or the second thread formed on the surface of the bolt; and when the bolt is transferred from the first threaded portion to the second threaded portion, the pad block can support the bolt, so that the bolt can smoothly transition between the first threaded portion and the second threaded portion.

[0026] In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 is a schematic structural diagram of a first rubbing plate in an embodiment of the present invention;

[0029] Figure 2 is a schematic structural diagram of the second rubbing plate in an embodiment of the present invention;

[0030] Figure 3 It is a flow chart of the present invention.

[0031] The figure numbers of the above drawings are: 1, first thread plate; 2, second thread plate; 3, first threaded portion; 4, second threaded portion; 5, height adjustment member; 101, connecting member. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] It should be noted that, in the description of the present invention, the terms "first", "second", etc. are only used for descriptive purposes and to distinguish similar objects. There is no order of precedence between the two, and they cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0034] Combination Figure 1 and Figure 2 As shown, this embodiment discloses a thread forming mechanism for forming threads on a connector 101. The connector 101 may be in the form of a bar, a bolt, a screw, etc. In this embodiment, preferably, a bolt is selected as the connector 101.

[0035] In this embodiment, the forming mechanism includes a first rubbing plate 1 and a second rubbing plate 2, and the first rubbing plate 1 is in the shape of a rectangular plate and extends in the left-right direction. In this method, the left-right direction is defined as the moving direction of the bolt. Among them, the first rubbing plate 1 and the second rubbing plate 2 are relatively arranged in the front-to-back direction, so that the overlapping part of the first rubbing plate 1 and the second rubbing plate 2 in the front-to-back direction can form a gap for the bolt to pass through. Preferably, the straight-line distance of the gap in the front-to-back direction is less than the diameter of the bolt, so that the inner side walls of the first rubbing plate 1 and the second rubbing plate 2 can respectively abut against the bolt to complete the fixing action of the bolt. The above-mentioned fixing method is that the first rubbing plate 1 and the second rubbing plate 2 abut against the outer side wall of the bolt, and the fixing area is large. Instead of the original two-end fixing method of the bolt, the fixing method of the present application can be applied to bolts of different lengths, and avoids the disadvantage that the end fixing in the prior art requires high precision requirements.

[0036] In this embodiment, the inner side walls of the first rubbing plate 1 and the second rubbing plate 2 are provided with corresponding first threaded portions 3 and second threaded portions 4. Specifically, the first threaded portion 3 and the second threaded portion 4 both extend in the left-right direction. The first rubbing plate 1 and the second rubbing plate 2 have a first end and a second end in the left-right direction, and the right end is defined as the first end and the left end as the second end. The first threaded portion 3 is located at the first end of the first rubbing plate 1, and the second threaded portion 4 is located at the second end of the first rubbing plate 1; the first thread is located at the second end of the second rubbing plate 2; and the second threaded portion 4 is located at the first end of the second rubbing plate 2. Preferably, the tail end of the first threaded portion 3 partially overlaps with the head end of the second threaded portion 4, and the first threaded portion 3 and the second threaded portion 4 are staggered in the up-down direction, so that they can be formed at different parts of the bolt to avoid interference.

[0037] In the above-mentioned setting mode, the first rubbing plate 1 can move in the left-right direction relative to the second rubbing plate 2. Preferably, before the first rubbing plate moves relative to the second rubbing plate 2, the second end of the first rubbing plate is set corresponding to the first end of the second rubbing plate, so that the first threaded portion 3 and the second threaded portion 4 are set correspondingly during the movement of the first rubbing plate 1 relative to the second rubbing plate 2. And during the movement of the first rubbing plate 1 relative to the second rubbing plate 2, due to the effect of the friction rotation force, it can drive the bolt to rotate around its own axis in the left-right direction, so that the first threaded member and the second threaded member are formed on the outer wall of the bolt in sequence. And while the surface of the bolt is forming the thread, the first rubbing plate 1 and the second rubbing plate 2 simultaneously complete the fixing of the bolt, which reduces one process compared to the prior art, and can save a lot of time and shorten the cycle in the process of forming threads on the surfaces of a large number of bolts.

[0038] In the above embodiment, since the tail end of the first threaded portion 3 partially overlaps with the head end of the second threaded portion 4, and since the first thread and the second thread are sequentially formed on the outer wall of the bolt, when the first threaded portion 3 is formed, if the above overlap is not provided so that the bolt directly enters the second threaded portion 4, the surface of the bolt is only subjected to the abutment force of the second threaded portion 4 and the misalignment between the first threaded portion 3 and the second threaded portion 4, so that the bolt is unevenly stressed from top to bottom, which is easy to cause tilting. The present application can better solve the above disadvantages by providing the above overlapping portion.

[0039] In this embodiment, the inner side walls of the first rubbing plate 1 and the second rubbing plate 2 are both provided with a height adjustment member 5 extending along the movement direction of the connecting member 101, wherein the height adjustment member 5 is located between the first threaded portion 3 and the second threaded portion 4 in the up-down direction. Preferably, the height adjustment member 5 includes a pad detachably connected to the first rubbing plate 1 or the second rubbing plate 2, and the surface of the height adjustment member 5 facing the bolt can contact the outer side wall of the bolt, and preferably, the height adjustment member 5 is respectively arranged corresponding to the first threaded member and the second threaded member in the movement direction of the connecting member 101. In the above-mentioned arrangement, the height of the pad protruding from the inner surface of the first rubbing plate 1 or the second rubbing plate 2 in the front-to-back direction can be adjusted according to demand, so as to adjust the depth of the first thread and / or the second thread formed on the surface of the bolt; and when the bolt is transferred from the first threaded portion 3 to the second threaded portion 4, the pad can support the bolt, so that the bolt can smoothly transition between the first threaded portion 3 and the second threaded portion 4.

[0040] In the above embodiment, preferably, the height of the outward protrusion of the cushion block at the overlapping portion of the first threaded portion 3 and the second threaded portion 4 is slightly higher than the remaining portion of the first threaded portion 3, so as to reduce the depth of the first threaded portion 3 while ensuring the abutment against the bolt. The function of the first threaded portion 3 at the overlapping portion is mainly to exert a balancing force, so that the bolt will not tilt when transitioning to the second threaded portion 4. Secondly, by raising the height of the cushion block protrusion at the overlapping portion, the first threaded portion 3 can also form the above-mentioned balancing force on the bolt without affecting the thread qualification rate, thereby optimizing the structure.

[0041] Combination Figure 3 As shown, the present invention also discloses a method for thread forming, comprising the following steps:

[0042] The first rubbing plate 1 and the second rubbing plate 2 are arranged opposite to each other, wherein preferably, the first rubbing plate 1 and the second rubbing plate 2 extend in the left-right direction and are arranged in parallel in the front-back direction;

[0043] The bolts are sent to the feeding track through the vibrating plate, and slide to the feeding area through the feeding track, and the bolts are sent to between the first rubbing plate 1 and the second rubbing plate 2 in an orderly manner through the material dividing device and the material pushing device, wherein the distance formed between the first rubbing plate 1 and the second rubbing plate 2 in the front-to-back direction is smaller than the diameter of the bolts, so that the first rubbing plate 1 and the second rubbing plate 2 are respectively in contact with the connecting member 101;

[0044] The first rubbing plate 1 is moved from right to left relative to the second rubbing plate 2, so that the first threaded portion 3 and the second threaded portion 4 on the first rubbing plate 1 and the second rubbing plate 2 are arranged correspondingly in sequence. Here, the height adjusting member 5 is used to abut against the outer wall of the bolt, so that the height of the bolt can be consistent in a space perpendicular to its own axis, so that the bolt can smoothly transition from the first threaded portion 3 to the second threaded portion 4.

[0045] Since the first and second rubbing plates 1 and 2 are disposed in contact with the bolt, the bolt can be driven to rotate around its own axis in the left and right directions, so that the first thread and the second thread are sequentially formed at different positions of the bolt.

[0046] The present invention uses specific embodiments to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A thread forming mechanism for forming threads on a connecting piece, characterized in that: It includes a first rubbing plate and a second rubbing plate extending along the movement direction of the connecting member, The first threading plate and the second threading plate are arranged opposite to each other, so as to form a gap for the connecting member to pass through; The inner side walls of the first and second threaded plates are both provided with corresponding first and second threaded portions, the tail end of the first threaded portion partially overlaps the head end of the second threaded portion, and the first threaded portion and the second threaded portion are staggered along the extension direction of the connecting member; The inner side walls of the first rubbing plate and the second rubbing plate are respectively in contact with the connecting member; The first rubbing plate can move relative to the second rubbing plate along the movement direction of the connecting member, thereby driving the connecting member to rotate around its own axis in the movement direction; Wherein, the inner walls of the first and second threading plates are both provided with height adjusting pieces extending along the movement direction of the connecting piece, the height adjusting pieces are perpendicular to the extension direction of the connecting piece and are located between the first threaded portion and the second threaded portion, the height adjusting piece includes a pad block detachably connected to the threading plate, the surface of the height adjusting piece facing the connecting piece can contact the outer side wall of the connecting piece, the height adjusting piece is respectively arranged corresponding to the first threaded portion and the second threaded portion in the movement direction of the connecting piece, the height of the pad block protruding outward at the overlapping part of the first threaded portion and the second threaded portion is slightly higher than the rest of the first threaded portion, thereby reducing the formation depth of the first threaded portion while ensuring abutment against the connecting piece.

2. The thread forming mechanism according to claim 1, characterized in that: The first rubbing plate and the second rubbing plate both have a first end and a second end in the moving direction of the connecting member, and the second end of the first rubbing plate is arranged corresponding to the first end of the second rubbing plate before moving.

3. A method for thread forming, using the thread forming mechanism as claimed in any one of claims 1 to 2, characterized in that: The following steps are involved: The first rubbing plate and the second rubbing plate are arranged opposite to each other; The connecting member is placed between the first rubbing plate and the second rubbing plate, and the first rubbing plate and the second rubbing plate are respectively in contact with the connecting member; The first threading plate is moved relative to the second threading plate along the movement direction of the connecting member to drive the connecting member placed between the first threading plate and the second threading plate to rotate around its own axis, so that the first thread and the second thread are sequentially formed on the connecting member, wherein a height adjusting member is abutted against the outer side wall of the connecting member to make the height of the connecting member consistent in a space perpendicular to its own axis, so as to smoothly transition the connecting member from the first threaded portion to the second threaded portion.

4. The method for thread forming according to claim 3, characterized in that In the step of "placing a connecting member between the first rubbing plate and the second rubbing plate", a vertical distance between the first rubbing plate and the second rubbing plate is smaller than a diameter of the connecting member.

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