A ribbed thread clip type steel bar connector

Abstract

The present invention discloses a rib thread clip type steel bar connector, in which threads are prefabricated on the ribs of the connecting ends of the steel bars to be connected, and the rib thread clip type steel bar connector comprises: a clip, which is in the shape of a hollow truncated cone, the inner side surface of the clip is a completely through internal thread and is threadedly matched with the connecting end of the steel bar I to be connected, and the outer side surface of the clip is a cone with an inclined surface; a lock nut, both the inner and outer sides of which are provided with threads, the internal thread of the lock nut is completely through and is threadedly matched with the connecting end of the steel bar II to be connected; a sleeve, the inner side surface of which is provided with a non-through internal thread and is connected by the external thread of the lock nut through the internal thread, and the part of the inner side surface of the sleeve that is not provided with the internal thread is a tapered hole, which forms an inclined self-locking with the outer side surface of the clip. The structure of the present invention is simple, the parts are few and precise, the construction operation is more convenient, and the manufacturing cost is lower; and no complicated auxiliary installation tools are required, the connection strength is high, and the requirements of the existing construction standards are fully met.

Description

Technical Field

[0001] The present invention relates to the technical field of steel bar connection, and more particularly to a ribbed thread clip-type steel bar connector. Background Art

[0002] Currently, the domestic market has put into use standard rebar connectors or rebar connectors that have evolved from standard types to accommodate special working conditions, such as double-cone rebar connectors, WL-type connectors, and grouting sleeve rebar connectors. However, the use of these connectors requires a lot of auxiliary work and tools, such as hydraulic stations and grouting equipment. The auxiliary tools are heavy, the workflow is cumbersome, and the connection efficiency is low. They are not suitable for working conditions such as limited space and the lack of external power supply. In particular, for connecting a small number of rebars, the value of the auxiliary equipment is higher than the connector itself, resulting in poor economic efficiency.

[0003] In the prior art, such as the utility model patent CN 215330965 U, a steel bar connector threaded sleeve ( Figure 15 ), which adopts a double-thread connection form, has a complex structure, and increases the difficulty of production and processing; another example is a cone-shaped clamp-type steel bar connector ( Figure 16 ), which uses the assembled serrated grooves to engage with each other to fix the connection, which increases the difficulty of installation and makes it difficult to align and position during assembly; the lasso connector designed in the invention patent CN 110863614 A ( Figure 17 ), contains multiple clips, small and numerous parts, which increases production costs and reduces work efficiency; the cone sleeve locking steel bar connection joint in the utility model patent CN 203613728 U ( Figure 18 ), the steel bar connector it designed requires matching auxiliary installation tools, and the auxiliary tools are heavy, which leads to cumbersome work processes and other problems.

[0004] The ribbed thread clip-type steel bar connector designed in this application avoids the shortcomings of the above steel bar connectors. Summary of the Invention

[0005] One object of the present invention is to provide a ribbed thread clip type steel bar connector, in which the prefabricated threads on the two steel bars to be connected are only processed and formed on their ribs, and do not damage the base material of the steel bars to be connected, thereby ensuring the material mechanical properties of the ribbed steel bars. Moreover, the connector has a simple structure, few and precise parts, more convenient construction operation, and lower manufacturing cost. It avoids the problem of requiring matching auxiliary installation tools in the prior art. The present application does not require complicated auxiliary installation tools. During installation, only a movable wrench or a wrench of the corresponding model is required to achieve quick connection of steel bars.

[0006] In order to achieve these purposes and other advantages according to the present invention, a rib thread clip type steel bar connector is provided, in which threads are prefabricated on the ribs of the connecting ends of the steel bars to be connected, and the rib thread clip type steel bar connector comprises: a clip, which is a hollow frustum, the inner side surface of the clip is a completely through internal thread and cooperates with the connecting end thread of the steel bar I to be connected, and the outer side surface of the clip is a cone with an inclined surface; a lock nut, both the inner and outer side surfaces of which are provided with threads, the internal thread of the lock nut is completely through and cooperates with the connecting end thread of the steel bar II to be connected; a sleeve, the inner side surface of which is provided with a non-through internal thread, and is connected to the external thread of the lock nut through the internal thread, and the part of the inner side surface of the sleeve that is not provided with the internal thread is a tapered hole, which forms an inclined self-locking with the outer side surface of the clip.

[0007] Preferably, the external thread on the outer surface of the lock nut is non-through, and a pair of symmetrical planes are provided on the portion of the outer surface of the lock nut where the external thread is not provided.

[0008] Preferably, the clip is composed of multiple parts cut in equal proportions, the cutting angles are right angles, the cutting edges of the clip are not cut to the bottom, and the cutting directions of any adjacent cutting edges are opposite.

[0009] Preferably, the internal thread of the clip is serrated, and the prefabricated thread on the connecting end of the steel bar I to be connected is also serrated, and the threads of the remaining parts are trapezoidal.

[0010] Preferably, the thread profile angle on the internal thread of the clip is slightly larger than the thread profile angle of the prefabricated thread on the steel bar I to be connected thereto. Preferably, the thread profile angle on the internal thread of the clip is 60°, and the thread profile angle of the prefabricated thread on the steel bar I to be connected thereto is 55°.

[0011] Preferably, the pitch of the internal thread of the clip is consistent with the pitch of the prefabricated thread on the steel bar I to be connected thereto, and the thread rotation direction of the internal thread and external thread corresponding to all structures is consistent.

[0012] Preferably, both ends of the clip are provided with chamfered corners on the inside and outside, the end of the sleeve close to the clip has an internal chamfered corner and an external chamfered right angle, the end of the sleeve close to the lock nut has an internal chamfered corner, both ends of the lock nut have chamfered corners on the inner surfaces, and the outer surface of the lock nut has a chamfered right angle only on the end connected to the sleeve.

[0013] Preferably, the prefabricated threads on the ribs of the connecting ends of the steel bars to be connected are processed using automated processing equipment, which includes a machine base, which is fixedly arranged, and a pre-processing device and a threading device are symmetrically and parallelly arranged on the machine base, a longitudinal slide rail is arranged in front of the entrance of the pre-processing device and the threading device, and an axial slide rail is arranged thereon, and the axial slide rail is arranged to slide along the longitudinal slide rail, and a fixing device is slidingly arranged on the transverse slide rail, and the steel bars to be processed with prefabricated threads are fixedly arranged in the fixing device, and a chamfering tool is arranged in the pre-processing device, which is composed of four diamond-shaped blades to form a square, and a die tool is arranged in the threading mechanism, and its shape is set according to the shape of the prefabricated thread, and the tools in the pre-processing device and the threading device are driven by a servo motor.

[0014] Preferably, the method for processing prefabricated threads on the ribs of the connecting ends of the steel bars to be connected by automated processing equipment comprises the following steps:

[0015] Step 1: Fix the steel bar: fix one end of the ribbed steel bar on the fixing device, with one end of the ribbed steel bar protruding from the fixing device and facing the entrance side of the pre-processing device and the threading device;

[0016] Step 2, pre-processing: The fixing device is driven by the driving mechanism to move along the axial slide rail so that one end of the ribbed steel bar is inserted into the chamfering tool of the pre-processing device. The corresponding servo motor is turned on to drive the chamfering tool to rotate so that the end of the ribbed steel bar is chamfered, thus completing the pre-processing operation of the ribbed steel bar;

[0017] Step 3, threading processing: the fixing device is driven by a driving mechanism to slide along the axial slide rail, so that the pre-treated ribbed steel bars are returned to the original position of the fixed steel bars, and the fixing device is driven by another driving mechanism to move the pre-treated ribbed steel bars along the longitudinal slide rail to the corresponding position of the threading device. Same as step 3, the end of the pre-treated ribbed steel bar is made to penetrate into the threading device, and the die tool is rotated and cut to obtain the prefabricated thread on the rib.

[0018] The present invention has at least the following beneficial effects:

[0019] 1. The ribbed threaded clip-type steel bar connector provided in this application includes a clip, a lock nut and a sleeve. The connection between the two steel bars is achieved through the threaded connection formed by the clip and the steel bar, and the sleeve and the lock nut, and the bevel self-locking formed by the tapered hole surface of the sleeve and the outer surface of the clip. It has a simple structure, convenient operation and low manufacturing cost. It does not require complicated auxiliary installation tools to achieve quick connection of steel bars. Because its prefabricated steel bar threads do not damage the parent material, the connection strength is high, which fully meets the requirements of existing construction standards.

[0020] 2. The automated equipment for processing threads on the ribs of ribbed steel bars in this application has the following advantages: the threads of the threaded steel bars processed and produced are only processed on the ribs of the steel bars, without damaging the parent material, and the threads are cut, so there is no problem of the steel bars being squeezed and deformed. The tensile strength is consistent with the tensile strength of the unthreaded steel bars, and the mechanical properties are relatively ideal.

[0021] 3. The processing method of the automated equipment for processing threads on ribs of ribbed steel bars of the present application performs pre-processing and threading operations simultaneously at different stations of the same equipment, which greatly saves processing time and thus improves processing efficiency.

[0022] Other advantages, objectives and features of the present invention will be reflected in part from the following description and will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall cross-sectional structure of a ribbed thread clip-type steel bar connector;

[0024] Figure 2 This is an exploded view of the ribbed thread clip type rebar connector;

[0025] Figure 3 is a schematic diagram of the structure of the clip;

[0026] Figure 4 Schematic diagram of the cross-sectional structure of the clip;

[0027] Figure 5 Schematic diagram of the structure of the sleeve;

[0028] Figure 6 Schematic diagram of the cross-sectional structure of the sleeve;

[0029] Figure 7 It is a structural diagram of the lock nut;

[0030] Figure 8 Schematic diagram of the steel bar structure to be connected for prefabricated rib threads Figure 1 ;

[0031] Figure 9 Schematic diagram of the steel bar structure to be connected for prefabricated rib threads Figure 2 ;

[0032] Figure 10 This is a schematic diagram of the thread angle of the clip and the steel bar to be connected before compression;

[0033] Figure 11 This is a schematic diagram of the thread angle of the clip and the steel bar to be connected after being compressed;

[0034] Figure 12This is a structural diagram of the automated processing equipment for rib prefabricated threads;

[0035] Figure 13 A partial view of a chamfering tool of a pre-processing device;

[0036] Figure 14 It is a schematic diagram of the die tool structure of the threading mechanism;

[0037] Figure 15 This is a schematic diagram of the prior art structure in the background technology of the present invention Figure 1 ;

[0038] Figure 16 This is a schematic diagram of the prior art structure in the background technology of the present invention Figure 2 ;

[0039] Figure 17 This is a schematic diagram of the prior art structure in the background technology of the present invention Figure 3 ;

[0040] Figure 18 This is a schematic diagram of the prior art structure in the background technology of the present invention Figure 4 .

[0041] Description of reference numerals:

[0042] 1. Lock nut, 2. Clip, 3. Sleeve, 4. Steel bar to be connected I, 5. Steel bar to be connected II, 6. Chamfered corners, 7. Cutting edge, 8. Serrated thread, 9. Tapered hole, 10. Chamfered right angle, 11. Flat surface, 12. Prefabricated thread, 13. Servo motor, 14. Machine base, 15. Pre-processing device, 16. Fixing device, 17. Axial slide rail, 18. Longitudinal slide rail, 19. Threading device. DETAILED DESCRIPTION

[0043] The present invention will be described in further detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0044] It should be noted that the experimental methods described in the following embodiments are conventional methods unless otherwise specified, and the reagents and materials are commercially available unless otherwise specified; in the description of the present invention, the terms "horizontal", "longitudinal", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0045] like Figures 1 to 9As shown, the present invention provides a rib thread clip type steel bar connector, in which a thread 12 is prefabricated on the rib of the connecting end of the steel bar to be connected, and the rib thread clip type steel bar connector includes: a clip 2, which is a hollow cone, the inner side surface of the clip 2 is a completely through internal thread and cooperates with the connecting end thread of the steel bar I4 to be connected, and the outer side surface of the clip 2 is a cone with an inclined surface; a lock nut 1, both the inner and outer sides of which are provided with threads, the internal thread of the lock nut 1 is completely through and cooperates with the connecting end thread of the steel bar II5 to be connected; a sleeve 3, the inner side surface of which is provided with a non-through internal thread, and is connected with the external thread of the lock nut 1 through the internal thread, and the part of the inner side surface of the sleeve 3 that is not provided with the internal thread is a tapered hole 9, which forms an inclined surface self-locking with the outer side surface of the clip 2.

[0046] In the above technical solution, if Figure 3 and Figure 4 As shown, the clip 2 has a hollow truncated cone shape with a small angle of taper, a built-in fully through internal thread, and a smooth frosted outer surface; Figure 7 As shown, the lock nut 1 is provided with threads inside and outside, the threads on the inner surface are completely through, and the outer surface is provided with a symmetrical plane 11 for easy installation; since the cross-sectional diameter of the entire unprocessed base material of the lock nut 1 is consistent everywhere, it is only necessary to process the threads on its inner and outer surfaces, avoiding more processing waste, thereby reducing processing costs and improving economic benefits; Figure 5 and Figure 6 As shown, the inner and outer surfaces of the sleeve 3 are smooth and frosted, and the outer shape is cylindrical. A non-through internal thread is provided inside, which is connected to the external thread of the lock nut 1; the other part is a tapered hole 9, the inner surface of the hole is set at a certain angle to its outer surface, preferably, the angle is 1°, and it forms a bevel self-locking with the outer surface of the clip 2. The inner annular surface size of the tapered hole 9 of the sleeve 3 is consistent with the size of the outer annular surface of the clip 2 after installation, so that the contact surfaces are tightly fitted; as shown Figure 8 and Figure 9 As shown, the two ends of the steel bars to be connected are both prefabricated with threads 12, and the threads are only cut on their ribs without touching the parent material. The parent material is intact, and the strength of the steel bars is consistent with that of the unthreaded steel bars, which enhances the tensile strength and ensures the mechanical properties of the entire ribbed steel bar.

[0047] like Figure 1 and Figure 2As shown, the prefabricated threads 12 on the two steel bars to be connected respectively form a thread pair with the internal threads of the clip 2 and the internal threads of the lock nut 1. At the same time, the internal threads on the inner side of the sleeve 3 form a thread pair connection with the outer threads of the lock nut 1; the outer surface of the clip 2 forms a surface contact with the inner surface of the tapered hole of the sleeve 3. When the sleeve 3 is tightened on the lock nut 1, it forms an inclined self-locking, thereby enhancing the friction between the two surfaces, thereby improving the connection performance of the ribbed threaded steel bar connector. Through the inclined self-locking formed by the sleeve 3 and the clip 2, the thread pair connection formed by the clip 2 and the steel bar to be connected, and the sleeve 3 and the lock nut 1, the steel bars can be quickly connected.

[0048] The specific operation steps of the above-mentioned ribbed thread clip-type steel bar connector under specific working conditions (working conditions: suitable for working conditions where the steel bars cannot rotate and have any or any combination of axial and radial deviations, the operating space is narrow, and the number of connected steel bars is small) are as follows: (1) the unfinished steel bar end to be connected is prefabricated with threads 12 in advance; (2) the lock nut 1 is screwed into the matching steel bar end to be connected using an adjustable wrench and tightened; (3) the sleeve 3 is oriented and inserted into the completed steel bar end to be connected according to the installation requirements; (4) the thick end of the clip group is directed toward the lock nut 1, so that the internal thread of the clip group is matched with the prefabricated thread 12 of the steel bar; (5) the end face of the thick end of the clip group is adjusted to coincide with the end face of the steel bar to which it is matched; (6) the sleeve 3 is inserted into the clip group and screwed into the lock nut 1 to complete the steel bar connection.

[0049] In another technical solution, Figure 7 As shown, the external thread on the outer side of the lock nut 1 is non-through, and a pair of symmetrical planes 11 are provided on the portion of the outer side of the lock nut 1 where no external thread is provided.

[0050] In the above technical solution, one end of the lock nut 1 is provided with two symmetrical planes 11. When installing the lock nut 1, only a wrench or adjustable wrench of the corresponding model is required. It is convenient for the wrench to be rotated under force on its plane 11, and then tighten the lock nut 1. No complicated auxiliary installation tools are required, and quick connection is achieved.

[0051] In another technical solution, Figure 3 As shown, the clip 2 is composed of multiple parts cut in equal proportions, the cutting angle is a right angle, the cutting openings 7 of the clip 2 are not cut to the bottom, and the cutting directions of any adjacent cutting openings 7 are opposite.

[0052] In the above technical solution, clip 2 is constructed from multiple, proportionally cut sections. When forming an inclined self-locking pattern with sleeve 3, clip 2 extends deeper into the connecting steel bar, achieving a more stable and secure self-locking mechanism. Preferably, clip 2 is constructed from four sections, with cutouts 7 not fully cut to facilitate installation and tighten under pressure. When tightened under pressure, the multiple sections align with the outer diameter of the connecting steel bar. Cutouts 7 are typically 2 mm wide.

[0053] In another technical solution, Figure 4 As shown, the internal threads of the four parts of the clip 2 are all serrated, and the prefabricated threads 12 on the connecting end of the steel bar 14 to be connected are also serrated, and the threads of the remaining parts are all trapezoidal.

[0054] In the above technical solution, the internal thread of the clip 2 and the prefabricated thread 12 on the connecting end of the steel bar 14 to be connected are both configured as sawtooth threads 8. This is to utilize the sawtooth threads 8 to achieve different tooth angles between the two, thereby achieving a tighter squeeze when the two are connected. The remaining threads are conventional trapezoidal threads.

[0055] In another technical solution, Figure 10 and 11 As shown, the thread profile angle on the internal thread of the clip 2 is slightly larger than the thread profile angle of the prefabricated thread 12 on the steel bar I4 to be connected thereto. Preferably, the thread profile angle on the internal thread of the clip 2 is 60°, and the thread profile angle of the prefabricated thread 12 on the steel bar I4 to be connected thereto is 55°.

[0056] In the above technical solution, the tooth angles of the internal thread of the clip 2 and the prefabricated thread 12 on the steel bar to be connected at the end of the clip 2 are inconsistent. Preferably, the values ​​of their parameters are as follows: the steel bar to be connected with a serrated thread 8 has a thread tooth angle of 55°, while the thread tooth angle of the serrated thread 8 of the clip 2 is 60°. The purpose of this design is that when the clip 2 is installed to the end of the steel bar to be connected, the sleeve 3 is inserted. When the sleeve 3 moves axially, the clip 2 is compressed on all sides, and the two corner edges of the tooth angle of the serrated thread 8 on the inner side of the clip 2 are in closer contact with the two corner edges of the tooth angle of the serrated thread 8 on the steel bar to be connected. At the same time, since the hardness of the connector is greater than the steel bar to be connected, the internal thread of the clip 2 and the steel bar are plastically deformed, and the thread angle of the serrated thread 8 on the inner side of the clip 2 is pressed into the interior of the steel bar base material to be connected, thereby increasing the friction between the ribbed thread steel bar connector and the steel bar to be connected, thereby enhancing the connection performance.

[0057] like Figure 10 As shown in the figure, φ1 represents the angle of the thread profile of the steel bar rib to be connected, and φ2 represents the angle of the internal thread profile of the clip 2, where φ2>φ1. When the clip 2 is compressed, the two sides of its profile angle fit tightly with the two sides of the rib thread profile angle. After the steel bar connector is installed, the ribbed steel bar will undergo plastic deformation, and the tooth tip of the internal thread profile of the clip 2 will embed into a part of the ribbed steel bar matrix (such as Figure 11 As shown), this enhances the friction between the clip 2 and the ribbed steel bar, thereby enhancing the connection performance of the steel bar connector.

[0058] In another technical solution, the pitch of the internal thread of the clip 2 is consistent with the pitch of the prefabricated thread 12 on the steel bar I4 to be connected thereto, and the thread rotation direction of the internal thread and the external thread corresponding to all structures are consistent.

[0059] In the above technical solution, when installing the clip 2 of the ribbed threaded steel bar connector, the clip 2 is installed on the steel bar to be connected with the prefabricated thread 12 being a sawtooth thread 8. No positioning device is required because the pitch of the prefabricated thread 12 of the steel bar to be connected that matches the clip 2 is consistent with the pitch of the internal thread of the clip 2, preferably 3.2 mm. Therefore, it is only necessary to make the spiral line of the internal thread of the clip 2 coincide with the spiral line of the sawtooth thread 8 on the steel bar rib to be connected, that is, the end face of the large end of the clip 2 coincides with the end face of the end of the steel bar to be connected with the prefabricated thread 12 being a sawtooth thread 8. No specific positioning device is required, which reduces a large number of processing steps, thereby improving production efficiency and economic benefits. All threads on the ribbed threaded steel bar connector, including the prefabricated threads 12 on the two steel bars to be connected, the internal thread running through the clip 2, and the internal and external threads of the lock nut 1, all have the same thread rotation direction. Preferably, the rotation direction is clockwise, which ensures that when the ribbed threaded steel bar connector is installed, the various components become increasingly stable and firm.

[0060] In another technical solution, both ends of the clip 2 are provided with chamfered corners 6 on the inside and outside, the sleeve 3 has a built-in chamfered corner 6 on the end close to the clip 2 and an external chamfered right angle 10, the sleeve 3 has a built-in chamfered corner 6 on the end close to the lock nut 1, and both end ends of the lock nut 1 have chamfered corners 6 on the inner surfaces, and the outer surface of the lock nut 1 is provided with a chamfered right angle 10 only on the end connected to the sleeve 3.

[0061] In the above technical solution, both ends of the clip 2 are provided with chamfers 6 on the inside and outside, which facilitates its installation on the steel bars to be connected with prefabricated threads 12. Moreover, the provided chamfers 6 also help the sleeve 3 to be better inserted and axially slid when it is placed on the clip 2. The provision of the chamfers 6 on the sleeve 3 makes it easier to insert the steel bars to be connected when installing the sleeve 3. On the other hand, it is easier to insert the lock nut 1, which facilitates the axial movement of the sleeve 3; thereby facilitating the locking of the sleeve 3 on the outer surface of the lock nut 1. The lock nut 1 has a completely through trapezoidal thread inside and a non-through trapezoidal thread outside. Both ends of the inner surface are provided with chamfers, and the outer surface has a chamfer 10 only at the end connected to the sleeve 3, which facilitates the threaded connection between the sleeve 3 and the lock nut 1, and the threaded connection between the lock nut 1 and the steel bars to be connected with the trapezoidal thread.

[0062] In another technical solution, Figures 12 to 14As shown, the prefabricated thread 12 on the rib of the connecting end of the steel bar to be connected adopts an automated processing equipment, which includes a machine base 14, which is fixedly set, and a pre-processing device 15 and a threading device 19 are symmetrically and parallelly set on the machine base 14, and a longitudinal slide rail 18 is set in front of the entrance of the pre-processing device 15 and the threading device 19, on which an axial slide rail 17 is set, and the axial slide rail 17 is set to slide along the longitudinal slide rail 18, and a fixing device 16 is slidably set on the transverse slide rail. The steel bar to be processed with the prefabricated thread 12 is fixedly set on the A chamfering tool is provided in the fixing device 16 and the pre-processing device 15, which is composed of four diamond-shaped blades to form a square. The diamond angle determines the chamfer angle of the ribbed steel bar after processing. A die tool is provided in the threading mechanism, and its shape is set according to the shape of the prefabricated thread 12. The shape of the die tool can be changed and replaced according to the type of thread to be processed. In the present invention, the rib thread on the ribbed steel bar is a serrated thread 8. The tools in the pre-processing device 15 and the threading device 19 are both driven by a servo motor 13.

[0063] In the above technical solution, the threaded steel bars processed by the rib-peeling and straight thread rolling equipment currently available on the market are repeatedly rolled multiple times after the ribs are peeled before forming threads. This results in the processed threaded steel bars having a certain taper, presenting a cone or a combination of a cone and a cylinder. The quality is not ideal, and its tensile strength is only 0.95 times that of un-ribbed steel bars. However, the automated equipment for processing threads on ribs in this application forms threads by cutting, and only processes threads on the ribs of the steel bar without damaging the parent material. The tensile strength is consistent with that of un-ribbed steel bars, the mechanical properties are relatively ideal, and it fully meets the standard requirements of existing construction.

[0064] In another technical solution, a method for processing prefabricated threads 12 on the ribs of the connecting ends of the steel bars to be connected by automated processing equipment includes the following steps:

[0065] Step 1: Fix the steel bar: fix one end of the ribbed steel bar to the fixing device 16, with one end of the ribbed steel bar protruding from the fixing device 16 and facing the entrance side of the pre-processing device 15 and the threading device 19;

[0066] Step 2, pre-processing: The fixing device 16 is driven by the driving mechanism to move along the axial slide rail 17, so that one end of the ribbed steel bar is inserted into the chamfering tool of the pre-processing device 15, and the corresponding servo motor 13 is turned on to drive the chamfering tool to rotate, so that the end of the ribbed steel bar is chamfered into a 150° cone with a chamfer of 2 mm to 3 mm, thus completing the pre-processing operation of the ribbed steel bar;

[0067] Step 3: Threading: The fixing device 16 is driven by a driving mechanism to slide along the axial slide rail 17, so that the pre-treated ribbed steel bar returns to the original position of the fixed steel bar. Another driving mechanism drives the fixing device 16 to move the pre-treated ribbed steel bar along the longitudinal slide rail 18 to the corresponding position of the threading device 19 ( Figure 12 In the dotted rectangular frame), the same as step three, the pre-treated ribbed steel bar end is inserted into the threading device 19, and the die tool is rotated and cut to obtain the prefabricated thread 12 on the rib.

[0068] The above-mentioned driving mechanism can be realized by setting up a telescopic cylinder, etc. The driving of the driving mechanism, the driving sliding distance and the start-up of the servo motor can all be realized through unified control of the control system, so that the equipment processing can be automated. The control of the control system is a conventional technical means and will not be repeated here.

[0069] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the description and implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A ribbed thread clip-type steel bar connector, characterized in that: The threads are prefabricated on the ribs of the connecting ends of the steel bars to be connected. The rib thread clip type steel bar connector includes: The clip is hollow and truncated. The inner side of the clip is a completely through-threaded internal thread that fits with the thread of the connecting end of the steel bar 1 to be connected. The outer side of the clip is a cone with an inclined surface. The lock nut has threads on both the inner and outer sides. The inner threads of the lock nut completely penetrate and cooperate with the threads of the connecting end of the steel bar II to be connected; The sleeve has a non-through internal thread on its inner side, and is connected to the external thread of the lock nut through the internal thread. The portion of the inner side of the sleeve that is not provided with the internal thread is a tapered hole, which forms an inclined self-locking with the outer side of the clip; The clip is composed of multiple parts cut in equal proportions, and the cutting angle is a right angle. The cutting edges of the clip are not cut to the bottom, and the cutting directions of any adjacent cutting edges are opposite; The internal thread of the clip is serrated, and the prefabricated thread on the connecting end of the steel bar 1 to be connected is also serrated, while the threads of the remaining parts are all trapezoidal. The thread profile angle of the internal thread of the clip is slightly larger than the thread profile angle of the prefabricated thread on the steel bar 1 to be connected to it. The thread profile angle of the internal thread of the clip is 60°, and the thread profile angle of the prefabricated thread on the steel bar 1 to be connected to it is 55°. Automated processing equipment is used to prefabricate threads on the ribs of the connecting ends of the steel bars to be connected, which includes a machine base, which is fixedly arranged, and a pre-processing device and a threading device are symmetrically and parallelly arranged on the machine base, a longitudinal slide rail is arranged in front of the entrance of the pre-processing device and the threading device, and an axial slide rail is arranged on it, and the axial slide rail is arranged to slide along the longitudinal slide rail, and a fixing device is slidingly arranged on the axial slide rail, and the steel bars to be processed with prefabricated threads are fixedly arranged in the fixing device, and a chamfering tool is arranged in the pre-processing device, which is composed of four diamond-shaped blades to form a square, and a die tool is arranged in the threading device, and its shape is set according to the shape of the prefabricated thread, and the tools in the pre-processing device and the threading device are driven by a servo motor.

2. The rib-thread clip-type steel bar connector according to claim 1, characterized in that: The external thread on the outer surface of the lock nut is non-through, and a pair of symmetrical planes are provided on the portion of the outer surface of the lock nut where the external thread is not provided.

3. The rib-thread clip-type steel bar connector according to claim 1, characterized in that: The pitch of the internal thread of the clip is consistent with the pitch of the prefabricated thread on the steel bar I to be connected thereto, and the thread rotation direction of the internal thread and the external thread corresponding to all structures is consistent.

4. The rib-thread clip-type steel bar connector according to claim 1, characterized in that: The inner and outer sides of both end heads of the clip are provided with chamfered corners, the end of the sleeve close to the clip has an internal chamfered corner and an external chamfered right angle, the end of the sleeve close to the lock nut has an internal chamfered corner, the inner surfaces of both end heads of the lock nut are provided with chamfered corners, and the outer surface of the lock nut is only provided with a chamfered right angle at the end connected to the sleeve.

5. The rib-thread clip-type steel bar connector according to claim 1, characterized in that: The method for processing prefabricated threads on the ribs of the connecting ends of the steel bars to be connected by automated processing equipment comprises the following steps: Step 1: Fix the steel bar: fix one end of the ribbed steel bar on the fixing device, with one end of the ribbed steel bar protruding from the fixing device and facing the entrance side of the pre-processing device and the threading device; Step 2, pre-processing: The fixing device is driven by the driving mechanism to move along the axial slide rail so that one end of the ribbed steel bar is inserted into the chamfering tool of the pre-processing device. The corresponding servo motor is turned on to drive the chamfering tool to rotate so that the end of the ribbed steel bar is chamfered, thus completing the pre-processing operation of the ribbed steel bar; Step 3, threading processing: the fixing device is driven by a driving mechanism to slide along the axial slide rail, so that the pre-treated ribbed steel bars are returned to the original position of the fixed steel bars, and the fixing device is driven by another driving mechanism to move the pre-treated ribbed steel bars along the longitudinal slide rail to the corresponding position of the threading device. Same as step 3, the end of the pre-treated ribbed steel bar is made to penetrate into the threading device, and the die tool is rotated and cut to obtain the prefabricated thread on the rib.

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