Pipe connectors, chucks and pipe laser cutting machines

Abstract

The present invention discloses a pipe connector, a chuck and a pipe laser cutting machine. The pipe connector includes: a connector body, which includes a connecting front end and a connecting rear end both of which can be connected to the inner cavity of the pipe, the end face of the connecting rear end is recessed inward to form a groove that passes through the left and right sides of the connector body, and the outer peripheral surface of the connector body is provided with a screw hole located above or below the groove and communicated with the groove; an adjusting screw, which includes a threaded end that is adapted to the screw hole, and the threaded end can pass through the screw hole and abut against the wall of the groove. The chuck includes a chuck body, an auxiliary tube and a pipe connector; the front end of the auxiliary tube is connected to the chuck body and the rear end thereof is inserted into the connecting front end; the auxiliary tube is provided with a mounting hole corresponding to the screw hole and adapted to the threaded end; the threaded end passes through the mounting hole and the screw hole to connect to the connector body and abut against the wall of the groove. By screwing in the adjusting screw, the connector body is tightly connected to the auxiliary tube and the pipe to be cut, which can avoid waste of waste materials.

Description

Technical Field

[0001] The present invention relates to the technical field of pipe cutting equipment, and in particular to a pipe connector, a chuck and a pipe laser cutting machine. Background Art

[0002] Metal pipes are a commonly used metal profile, widely used in various fields of production and life. Metal pipe manufacturers often produce long lengths (2 to 5 meters, or even longer) for ease of production and transportation. However, during application, they often need to be cut into desired lengths, such as 25 to 30 cm, based on usage requirements.

[0003] With the rapid development of science and technology, laser cutting machines have emerged. Due to their advantages of high cutting precision and low pollution, they are widely used in scenarios where large quantities of metal pipes need to be cut. The invention patent with application number CN201610674096.9 discloses a pipe laser cutting machine, which includes an active chuck assembly for clamping the pipe and driving the pipe to rotate, a transmission mechanism for driving the active chuck assembly for linear reciprocating motion, a driven chuck assembly for clamping the pipe and driving the pipe to rotate synchronously with the active chuck assembly, a laser cutting mechanism, and a feeding clamping and positioning mechanism for clamping the pipe. The laser cutting mechanism is located on the discharge side of the driven chuck assembly.

[0004] However, during the pipe cutting process, it was found that since the active chuck clamped one end of the pipe to be cut, there was a certain length between the active chuck and the driven chuck, which was greater than the length of the pipe product after cutting (such as 25 cm). As a result, the pipe located between the active chuck and the driven chuck could not be cut, so that it was difficult to avoid the waste of pipe tails (or pipe scraps) in the entire pipe cutting work. Moreover, the accumulation of pipe tails seriously affected the company's operating profits. Summary of the Invention

[0005] The purpose of the present invention is to provide a pipe connector to solve one or more technical problems existing in the prior art and at least provide a beneficial choice or create conditions.

[0006] In addition, the present invention also provides a chuck on which the pipe connector is installed.

[0007] In addition, the present invention also provides a tube laser cutting machine having the chuck.

[0008] The technical solutions adopted to solve the above technical problems are:

[0009] A first aspect of the present invention provides a pipe connector, comprising:

[0010] The connector body includes a connecting front end and a connecting rear end, both of which are connectable to the inner cavity of the pipe; the end surface of the connecting rear end is recessed inward to form a groove, and the groove passes through the left and right sides of the connector body; the outer circumference of the connector body is provided with a screw hole, the screw hole is located above or below the groove, and the screw hole is in communication with the groove;

[0011] The adjusting screw comprises a threaded end portion, wherein the threaded end portion is adapted to the threaded hole; the threaded end portion can pass through the threaded hole and abut against the wall surface of the groove.

[0012] The present invention has at least the following technical effects: the auxiliary tube and the inner cavity of the pipe to be cut can be inserted into the connecting front end and the connecting rear end, respectively. A groove and an adjusting screw are provided at the connecting rear end. After the adjusting screw is screwed into the screw hole and abuts against the wall of the groove, the force exerted on the adjusting screw by the wall of the groove and the friction between the screw hole and the adjusting screw cause the connector body to deform, causing the connecting rear end to be stretched outward, thereby tightly connecting the connecting rear end to the inner cavity of the pipe to be cut. In addition, the adjusting screw can fix the auxiliary tube to the connecting body. After loosening the adjusting screw, the deformation of the connecting body is canceled, the connection between the connecting rear end and the pipe to be cut is released, and the pipe to be cut can be easily removed or inserted into the connecting rear end.

[0013] An auxiliary tube is set between the active chuck assembly and the driven chuck assembly, and the tube connector is used to force the tube to be cut to be located on the discharge side of the driven chuck assembly. This can greatly improve the utilization rate of the tube during laser cutting, cut more tubes, and thus avoid the generation of tube tails.

[0014] As a further improvement to the above technical solution, the connector body is provided with through holes extending through the left and right sides of the connector body; the through holes are located in front of the groove and communicate with the groove; the diameter of the through holes is greater than the width of the groove. Providing the through holes in front of the groove allows a small force applied to the adjusting screw in the groove to cause a large deformation of the rear end of the connector, thereby extending the service life of the adjusting screw and reducing the difficulty of operating the adjusting screw.

[0015] As a further improvement to the above technical solution, the cross-sectional shape of the through hole is circular or elliptical. The circular or elliptical design of the through hole can prevent the pipe connector from cracking when frequently deformed and stretched, thereby extending the service life of the pipe connector.

[0016] As a further improvement to the above technical solution, the connector body is provided with a positioning block; the positioning block is formed to protrude outward from the outer circumference of the connector body and is located behind the screw hole. The positioning block is provided on the outer circumference of the connector body to effectively position the auxiliary tube, facilitating its installation.

[0017] As a further improvement to the above technical solution, the end surface of the connecting rear end is provided with a chamfer. The chamfer is provided at the connecting rear end to play a guiding role, facilitating the smooth insertion of the pipe to be cut into the connecting rear end.

[0018] As a further improvement to the above technical solution, the end surface of the connection front end is provided with a chamfer. The chamfer is provided at the connection front end to play a guiding role, facilitating the smooth insertion of the auxiliary tube into the connection front end.

[0019] The second aspect of the present invention provides a chuck, which includes: a chuck body, an auxiliary tube and the pipe connector as described above; the front end of the auxiliary tube is connected to the chuck body, and the rear end of the auxiliary tube is inserted into the connecting front end; the auxiliary tube is provided with a mounting hole, which is adapted to the threaded end of the adjusting screw; the mounting hole and the screw hole are provided correspondingly; the threaded end passes through the mounting hole and the screw hole in sequence to connect with the connector body, and abuts against the wall of the groove. An auxiliary tube is provided on the chuck body, and a pipe connector is provided between the auxiliary tube and the pipe to be cut, which can ensure that the entire pipe to be cut is located on the discharge side of the driven chuck assembly, which is conducive to laser cutting of the entire pipe, greatly improving the utilization rate of the pipe, and avoiding the generation of pipe tails.

[0020] A third aspect of the present invention provides a tube laser cutting machine equipped with the aforementioned chuck. The installation of the chuck on the tube laser cutting machine can significantly increase the utilization rate of the tube, avoid tube waste, and thus improve the production efficiency of the enterprise. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0022] Figure 1 This is a structural diagram of an embodiment of the pipe connector provided by the present invention, in which the connector is connected to an auxiliary pipe and a pipe to be cut;

[0023] Figure 2 This is a structural perspective view of an embodiment of the pipe connector provided by the present invention;

[0024] Figure 3 yes Figure 2 Right view of;

[0025] Figure 4This is a structural perspective view of another embodiment of the pipe connector provided by the present invention;

[0026] Figure 5 This is a structural perspective view of another embodiment of the pipe connector provided by the present invention;

[0027] Figure 6 This is a structural perspective view of another embodiment of the pipe connector provided by the present invention;

[0028] Figure 7 This is a structural perspective view of another embodiment of the pipe connector provided by the present invention;

[0029] Figure 8 This is a structural perspective view of another embodiment of the pipe connector provided by the present invention;

[0030] Figure 9 It is a structural schematic diagram of another embodiment of the pipe connector provided by the present invention connected with an auxiliary pipe and a pipe to be cut.

[0031] The markings in the accompanying drawings are as follows: 100, connector body; 110, through hole; 120, groove; 130, screw hole; 140, chamfer; 150, positioning block; 200, auxiliary pipe; 300, pipe to be cut; 400, adjusting screw. DETAILED DESCRIPTION

[0032] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it should not be understood as a limitation on the scope of protection of the present invention.

[0033] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They 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. Therefore, they cannot be understood as limitations on the present invention.

[0034] In the description of the present invention, if words such as "several" are used, they mean one or more; "more" means more than two; "greater than," "less than," and "exceed" are understood to exclude the number itself; and "above," "below," and "within" are understood to include the number itself. The terms "first," "second," and "third" are used solely to distinguish technical features and are not to be construed as indicating or implying relative importance, or as implicitly specifying the number or order of the technical features.

[0035] It should be noted that in the drawings, the X direction is from the rear side to the front side of the pipe connector; the Y direction is from the left side to the right side of the pipe connector; and the Z direction is from the bottom side to the top side of the pipe connector.

[0036] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0037] Reference Figures 1 to 9 , several embodiments of the pipe connector, chuck and pipe laser cutting machine of the present invention are given below.

[0038] like Figures 1 to 8 As shown, an embodiment of the present invention provides a pipe connector, which includes a connector body 100 and an adjusting screw 400 .

[0039] The connector body 100 is made of metal and includes a front end and a rear end, both of which can be connected to the inner cavity of the pipe. The front end is used to connect to the auxiliary pipe 200, and the rear end is used to connect to the pipe 300 to be cut.

[0040] Since the cross-sectional shape of the pipe 300 to be cut can be circular, oval, square, or triangular, the cross-sectional shape of the auxiliary pipe 200 can be consistent with that of the pipe 300 to be cut. Therefore, the cross-sectional shapes of the connecting front end and the connecting rear end are the same as those of the auxiliary pipe 200 and the pipe 300 to be cut. Of course, the pipe 300 to be cut can be a straight pipe or a special-shaped pipe. The auxiliary pipe 200 is a straight pipe.

[0041] like Figure 2 The connector body 100 shown is used for cutting pipes with a circular cross-section.

[0042] like Figure 4 The connector body 100 shown is used for cutting pipes with an elliptical cross-section.

[0043] like Figure 5 The connector body 100 shown is used for cutting pipes with a square cross-section.

[0044] like Figure 6 The connector body 100 shown is used for cutting pipes with a rectangular cross-section.

[0045] Preferably, the end surface of the connecting rear end is provided with a chamfer 140. This chamfer design can guide the pipe 300 to be cut, making it easier to insert the pipe 300 into the connecting rear end. The end surface of the connecting front end is provided with a chamfer 140 to facilitate inserting the auxiliary pipe 200 into the connecting front end. The chamfer can be a bevel or a rounded corner.

[0046] The end surface of the connection rear end is recessed inward to form a groove 120, that is, the opening of the groove 120 is set toward the rear, the groove bottom is located at the front side, and the two side walls of the groove 120 are located at the upper side and the lower side respectively. Figure 3 The groove 120 passes through the left side and the right side of the connector body 100 .

[0047] The outer circumference of the connector body 100 is provided with a screw hole 130, the screw hole 130 is located above or below the groove 120, and the screw hole 130 is communicated with the groove 120. Figure 2 、 Figure 4 、 Figure 5 As shown, since the front side surface and the rear side surface of the connector body 100 are both end surfaces, the surface formed along the edge of the end surface on the connector body 100 is the outer peripheral surface of the connector body 100.

[0048] In this embodiment, a screw hole 130 is provided, and the screw hole 130 is provided in the middle position above the groove 120 , and the axis of the screw hole 130 and the axis of the connector body 100 are in the same vertical plane.

[0049] Of course, two screw holes 130 can also be provided in the connector body 100, both located above the groove 120 and symmetrical about the axis of the connector body 100. Alternatively, two screw holes 130 are provided, respectively located above and below the groove 120, and arranged front to back.

[0050] The adjusting screw 400 includes a threaded end portion that mates with the screw hole 130, allowing the threaded end portion to be threadedly connected to the screw hole 130. The threaded end portion can pass through the screw hole 130 and abut against the wall of the groove 120. The adjusting screw can be a flat-head screw or a headless screw. When a flat-head screw is used, the head of the flat-head screw can be an external hexagonal head or a head with an internal hexagonal hole, making it easier for a worker to operate the head with a wrench or an internal hexagonal wrench, thereby causing the adjusting screw 400 to be screwed in or out of the screw hole 130.

[0051] like Figure 1 、 Figure 3As shown, after the adjusting screw 400 is screwed into the screw hole 130 and contacts the wall surface of the groove 120, the adjusting screw 400 is further screwed in. Then, the upward force exerted on the adjusting screw 400 by the wall surface of the groove 120 and the friction between the screw hole 130 and the adjusting screw 400 cause the connector body 100 to deform, so that the rear end of the connection can be stretched outward. After the pipe 300 to be cut is inserted into the rear end of the connection, the expansion of the rear end of the connection makes the outer peripheral surface of the rear end of the connection closely contact the inner wall surface of the pipe 300 to be cut, so that the pipe 300 to be cut is firmly fixed to the connector body 100 and can rotate synchronously with the rotation of the connector body 100.

[0052] When the adjusting screw 400 is loosened, the connector body 100 returns to its original state, and the pipe 300 to be cut can be easily removed from the connector body 100 or inserted into the connector body 100 .

[0053] In some embodiments, the connector body 100 is provided with a through hole 110, and the through hole 110 passes through the left and right sides of the connector body 100; the through hole 110 is located in front of the groove 120, and the through hole 110 is connected to the groove 120; the aperture of the through hole 110 is greater than the width of the groove 120, where the width of the groove 120 refers to the height distance between the upper and lower parts of the rear end of the connection, such as Figure 3 In addition, the center of the through hole 110 may be located on the center horizontal line of the groove 120 .

[0054] By setting a through hole with a diameter larger than the width of the groove 120, a small force applied to the adjusting screw 400 in the groove 120 can cause a large deformation of the connecting rear end, thereby extending the service life of the adjusting screw 400 and reducing the difficulty of operating the adjusting screw 400.

[0055] The through hole 110 may be square. However, preferably, the cross-sectional shape of the through hole 110 is circular or elliptical, such as Figure 6 、 Figure 8 The through hole 110 is designed to be circular or oval, which can prevent the pipe connector from cracking when it is frequently deformed and stretched, thereby extending the service life of the pipe connector.

[0056] According to the different cross-sectional shapes of the pipes and the different cutting lengths, the length and cross-sectional shape of the pipe connector and the shape of the through hole are selected to meet the cutting requirements, such as Figure 2 、 Figures 4 to 8 shown.

[0057] like Figure 9As shown, in some embodiments, the connector body 100 is provided with a positioning block 150; the positioning block 150 is formed to protrude outward from the outer circumference of the connector body 100 and is located behind the screw hole 130. Positioning block 150, provided on the outer circumference of the connector body 100, effectively positions the auxiliary tube 200, facilitating installation of the auxiliary tube 200. Furthermore, after the pipe 300 to be cut is inserted into the rear end of the connector, the positioning block 150 also serves to position the pipe 300 to be cut.

[0058] The positioning blocks 150 can be arranged around the outer circumference of the connector body 100; or the positioning blocks 150 can be arranged at intervals around the outer circumference of the connector body 100, with two, three, or more positioning blocks 150 provided. The positioning blocks 150 can be connected to the connector body 100 by welding or an integral molding process. The positioning blocks 150 can be made of metal.

[0059] During the pipe cutting process, the pipe connector moves from the feed side to the discharge side of the driven chuck assembly. Therefore, the outer surface of the positioning block 150 is flush with the outer wall of the pipe 300 to be cut, allowing the pipe connector to pass smoothly through the driven chuck assembly without getting stuck. Furthermore, one embodiment of the present invention provides a chuck comprising a chuck body, an auxiliary tube 200, and the pipe connector described above. The chuck body represents the active chuck assembly known in the prior art, and therefore its specific structure will not be described in detail.

[0060] The front end of the auxiliary tube 200 is connected to the chuck body, and the rear end of the auxiliary tube 200 is inserted into the connecting front end. The auxiliary tube 200 is provided with a mounting hole, which is adapted to fit the threaded end of the adjusting screw 400. The mounting hole is provided corresponding to the screw hole 130. The threaded end passes through the mounting hole and the screw hole 130 in sequence to connect to the connector body 100 and abut against the wall of the groove 120. The inner wall of the mounting hole may or may not be provided with an internal thread.

[0061] The mounting hole can be cylindrical or stepped. When a flat-head screw is used as the adjusting screw 400, a stepped mounting hole design allows the adjusting screw 400 to fit within the mounting hole, preventing the tubular connector from getting stuck when passing through the driven chuck assembly. When a headless screw is used as the adjusting screw 400, a cylindrical mounting hole design also allows the adjusting screw 400 to fit within the mounting hole.

[0062] An auxiliary tube 200 is provided on the chuck body. The chuck body tightly clamps the auxiliary tube 200 and can drive the auxiliary tube 200 to rotate. Then, a pipe connector is set between the auxiliary pipe 200 and the pipe 300 to be cut. Specifically, after the auxiliary pipe 200 is inserted into the front end of the connection, the adjusting screw 400 is used to pass through the mounting hole and the screw hole 130 in sequence to fix the auxiliary pipe 200 on the connector body 100, so that the connector body 100 can rotate with the auxiliary pipe 200; then, the pipe 300 to be cut is inserted into the rear end of the connection. When the positioning block 150 is not set, the end face of the pipe 300 to be cut contacts the end face of the auxiliary pipe 200 to complete the positioning of the pipe 300 to be cut; then, the adjusting screw 400 is continued to be screwed in until the connector body 100 is deformed. Through the expansion action of the connector body 100, the outer peripheral surface of the connector body 100 is in close contact with the inner wall surface of the pipe 300 to be cut, so that the pipe 300 to be cut can rotate synchronously with the auxiliary pipe 200 and the pipe connector.

[0063] The above structural design ensures that the entire pipe to be cut is located on the discharge side of the driven chuck assembly, which is conducive to laser cutting of the entire pipe, greatly improving the utilization rate of the pipe and avoiding the generation of pipe waste.

[0064] The length of the auxiliary tube 200 is designed to ensure that, when the travel distance between the active and passive chuck assemblies is minimized, the tube connector moves from the feed side of the passive chuck assembly to the discharge side. This allows a single long tube to be cut into multiple tubes of 25-30 cm in length during the cutting process. The length of the tube 300 to be cut, inserted into the rear end of the connector, is typically 10-20 cm. These values ​​will, of course, be adjusted based on actual cutting conditions.

[0065] Furthermore, one embodiment of the present invention provides a tube laser cutting machine equipped with the aforementioned chuck. Installing the chuck on the tube laser cutting machine can significantly increase tube utilization, avoid tube waste, and thus improve the production efficiency of the enterprise.

[0066] The above specifically describes the preferred embodiments of the present invention, but the invention is not limited to the embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A chuck, characterized in that: include: Chuck body, auxiliary tube (200) and tube connector; The pipe connector includes: A connector body (100) comprising a connection front end and a connection rear end, both of which can be connected to the inner cavity of a pipe; the connection front end is used to connect to the auxiliary pipe (200), and the connection rear end is used to connect to the pipe (300) to be cut; the end surface of the connection rear end is recessed inward to form a groove (120), and the groove (120) passes through the left side and the right side of the connector body (100); a screw hole (130) is provided on the outer peripheral surface of the connector body (100), and the screw hole (130) is located above or below the groove (120), and the screw hole (130) is in communication with the groove (120); An adjusting screw (400) includes a threaded end portion adapted to fit the screw hole (130); the threaded end portion can pass through the screw hole (130) and abut against a wall surface of the groove (120); The front end of the auxiliary tube (200) is connected to the chuck body, and the rear end of the auxiliary tube (200) is inserted into the connection front end; the auxiliary tube (200) is provided with a mounting hole, and the mounting hole is adapted to the threaded end of the adjusting screw (400); the mounting hole and the screw hole (130) are arranged correspondingly; the threaded end passes through the mounting hole and the screw hole (130) in sequence to be connected to the connector body (100), and abuts against the wall surface of the groove (120), so that the connection rear end is stretched outward, so that the outer peripheral surface of the connection rear end is in close contact with the inner wall surface of the pipe to be cut (300), so that the pipe to be cut (300) is fixed on the connector body (100), and the auxiliary tube (200) is fixed on the connector body (100); The chuck body can clamp the auxiliary tube (200) and can drive the auxiliary tube (200), the tube connector and the tube (300) to be cut to rotate synchronously.

2. The chuck according to claim 1, wherein: The connector body (100) is provided with a through hole (110), and the through hole (110) passes through the left side and the right side of the connector body (100); the through hole (110) is located in front of the groove (120), and the through hole (110) is communicated with the groove (120); the aperture of the through hole (110) is greater than the width of the groove (120).

3. The chuck according to claim 2, wherein: The cross-sectional shape of the through hole (110) is circular or elliptical.

4. The chuck according to any one of claims 1 to 3, characterized in that The connector body (100) is provided with a positioning block (150); the positioning block (150) is formed by protruding outward from the outer peripheral surface of the connector body (100), and the positioning block (150) is located at the rear side of the screw hole (130).

5. The chuck according to claim 4, wherein: The end surface of the connecting rear end is provided with a chamfer.

6. The chuck according to claim 5, wherein: The end surface of the connecting front end is provided with a chamfer.

7. A tube laser cutting machine, characterized in that: The tube laser cutting machine is equipped with a chuck as claimed in any one of claims 1 to 6.

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