WO2024138983A1

WO2024138983A1 - Straight pipe cutting and pipe end machining integrated machine

Info

Publication number: WO2024138983A1
Application number: PCT/CN2023/091602
Authority: WO
Inventors: 龙晓明; 曹敏; 陈家金
Original assignee: 奥美森智能装备股份有限公司
Priority date: 2022-12-27
Filing date: 2023-04-28
Publication date: 2024-07-04

Abstract

A straight pipe cutting and pipe end machining integrated machine, comprising a base frame (1), wherein a cutting device, a receiving member (32), a rotating disc (5), a feeding device, a pipe end shaping device and a straight pipe machining device are arranged on the base frame (1); the cutting device is configured to cut off an elongated pipe (2) to form a pipe-shaped workpiece (21); the receiving member (32) is provided with a storage recess (321) configured to receive the pipe-shaped workpiece (21) formed by cutting-off; the rotating disc (5) is provided with fixture (51) capable of clamping the pipe-shaped workpiece (21); the feeding device is configured to convey the pipe-shaped workpiece in the storage recess (321) to the fixture (51) on the rotating disc (5); the pipe end shaping device is configured to shape ends of the pipe-shaped workpiece (21); the straight pipe machining device is configured to perform hole expanding or hole shrinking on the shaped pipe-shaped workpiece (21); and the rotating disc (5) is connected to a rotating disc driving device capable of driving the rotating disc (5) to rotate. The straight pipe cutting and pipe end machining integrated machine can automatically cut off the pipe to generate the pipe-shaped workpiece, then shape the ends of the pipe-shaped workpiece, and finally perform hole expanding or hole shrinking on the pipe-shaped workpiece to form a finished straight pipe, thereby realizing full-automatic production.

Description

Straight tube cutting and tube end processing integrated machine

Technical Field

The invention relates to the technical field of heat exchanger production, and in particular to a straight tube cutting and tube end processing integrated machine.

Background technique

As a compact heat exchanger, tube-fin heat exchanger is widely used in the refrigeration industry. The straight tube shown in Figure 1 is a production flow chart of a part of the heat exchanger from raw materials to finished products. The finished product of this part has the characteristics of one end being thick and the other end being thin. In the traditional production process, the traditional mold and manual placement are used to mold the above-mentioned pipe fittings. This molding processing mode is not only inefficient, unreliable, and has a low product yield, but also prone to accidents and a low safety factor. Workers' hands are often crushed during material discharge and molding operations.

technical problem

In order to solve the above problems, the patent with publication number CN 211331319 U discloses a multifunctional straight pipe automated processing equipment, which adopts a vibrating plate to load the tubular workpiece onto a horizontally arranged turntable, and automatically forms a finished straight pipe after the pipe fittings are flattened at both ends, expanded or shrunk on the horizontal turntable.

Such equipment also has the following problems. First, since the turntable is only subjected to axial force on one side when expanding the straight tube, it is easy to cause the turntable to deform. Second, the tubular workpiece is a short tube, and the long tube needs to be cut and formed in the previous process, and then the cut short tube is transported to the vibration plate for use. The transportation process requires a lot of manpower, and it is difficult to achieve the automated connection between the production of tubular workpieces and the processing of tubular workpieces.

Technical Solutions

In view of this, an object of the present invention is to provide an all-in-one machine for straight tube cutting and tube end processing, which can realize automated production of tubular workpieces and automatically process the tubular workpieces.

The technical solution adopted by the present invention to solve the technical problem is:

A straight tube cutting and tube end processing integrated machine, comprising a frame, on which are arranged:

A cutting device is used to cut long strips of pipe fittings into tubular workpieces;

A receiving piece, wherein the receiving piece is provided with a receiving groove for receiving the cut tubular workpiece;

A turntable, on which a fixture capable of clamping a tubular workpiece is disposed;

A feeding device, used for conveying the tubular workpiece in the receiving groove to the fixture on the turntable;

A tube end shaping device is used to shape the end of a tubular workpiece;

The straight tube processing device is used to expand or shrink the hole of a shaped tubular workpiece. The turntable is connected to a turntable driving device that can drive it to rotate. When the turntable rotates, the tooling fixture switches between the working position of the feeding device, the working position of the tube end shaping device, and the working position of the straight tube processing device.

In a preferred embodiment of the present invention, the cutting device includes a cutting assembly and a breaking assembly, the cutting assembly includes a support that can support the pipe and a blade that can make circumferential cutting marks on the surface of the pipe, the breaking assembly includes a pipe clamping device that can clamp the pipe, a breaking piece that can break the pipe, and a breaking driver that can drive the breaking piece to move.

In a preferred embodiment of the present invention, the tube clamping device is located on the front side of the cutting assembly, the storage groove is located below the snapping piece, and the lower surface of the snapping piece is provided with an inclined tube-snapping surface, the height of which gradually increases from front to back, and when the snapping drive drives the snapping piece to move downward, the tube-snapping surface presses against the front end of the tube to cause the front part of the tube to break from the cutting mark.

In a preferred embodiment of the present invention, a linear groove is provided on the lower surface of the snapping piece for the pipe to be embedded therein, and the snapping tube surface is provided at the bottom of the linear groove. The snapping tube surface is a concave cylindrical surface, and the axis of the concave cylindrical surface gradually rises from front to back.

In a preferred embodiment of the present invention, the tube clamping device includes a tube support fixed on the support frame and a tube pressing plate located above the tube support, the tube support is provided with a first tube clamping groove for clamping the tube fitting, the tube pressing plate is provided with a second tube clamping groove for clamping the tube fitting, and the tube pressing plate is connected to a tube clamping driver capable of driving it to move up and down.

In a preferred embodiment of the present invention, the disk surface of the turntable is vertically arranged, one end of the storage groove is provided with a pipe outlet facing the turntable, the feeding device includes a first push rod and a push-up driver capable of driving the first push rod to move along the storage groove, one end of the first push rod has a first plug capable of being inserted into the tubular workpiece and lifting the tubular workpiece, the first push rod is also provided with a push tube structure capable of abutting against the end face of the tubular workpiece, and after the first plug of the first push rod is inserted into the tubular workpiece, the tubular workpiece is pushed out from the pipe outlet to the loading station of the turntable.

In a preferred embodiment of the present invention, the push tube structure is a step provided on the first push rod, and the free end of the first plug is provided with a chamfer.

In a preferred embodiment of the present invention, the receiving groove is a V-shaped groove, and the bottom surface of the receiving groove is an arc surface that matches the tubular workpiece.

In a preferred embodiment of the present invention, the pipe outlet is a circular hole capable of guiding the tubular workpiece, and the circular hole is arranged on the inner end surface of the receiving groove.

In a preferred embodiment of the present invention, the pipe end shaping device includes two groups of shaping knife groups respectively arranged on both sides of a turntable and a feed drive capable of driving the two groups of shaping knife groups to move closer to or away from the turntable, and the shaping knife group includes a shaping bracket, a knife shaft arranged on the shaping bracket, a shaping knife head detachably mounted on the knife shaft, and a shaping drive capable of driving the knife shaft to rotate.

In a preferred embodiment of the present invention, the surface of the turntable is vertically arranged, and the straight tube processing device includes a reaming assembly located at the rear side of the turntable and a pipe feeding assembly located at the front side of the turntable, and the pipe feeding assembly includes a second push rod and a pipe feeding driver capable of driving the second push rod to move forward and backward, and when the second push rod moves backward, it pushes the tubular workpiece on the turntable to the working position of the reaming assembly.

In a preferred embodiment of the present invention, one end of the second push rod has a second plug that can be inserted into the tubular workpiece and lift the tubular workpiece. The second push rod is also provided with a push tube structure that can abut against the end face of the tubular workpiece. After the second plug is inserted into the tubular workpiece, it pushes the tubular workpiece to the working position of the reaming assembly.

In a preferred embodiment of the present invention, the reaming assembly includes a reaming die fixed on a frame and an expansion rod arranged behind the reaming die, the expansion rod is connected to a reaming driver capable of driving it to move forward and backward, the reaming die is provided with a stepped hole for a tubular workpiece to pass through, after a second push rod pushes the tubular workpiece into the stepped hole, the expansion rod is inserted into the tubular workpiece and cooperates with the stepped hole to extrude and expand the tubular workpiece.

In a preferred embodiment of the present invention, the stepped hole includes a first hole segment and a second hole segment located behind the first hole segment, the diameter of the second hole segment is larger than the diameter of the first hole segment, the hole expansion mold is provided with an insert plate and a slot intersecting with the first hole segment, and the insert plate is connected to a insert plate driver that can be driven to be inserted into the slot and block the first hole segment.

Beneficial Effects

The beneficial effects of the present invention are:

First, in the present invention, the cutting device can automatically cut the pipe fitting and produce a tubular workpiece, and then, with the cooperation of the receiving member, the turntable, the feeding device, the pipe end shaping device and the straight pipe processing device, the end of the tubular workpiece can be shaped, and finally the tubular workpiece is expanded or shrunk to form a finished straight pipe. The whole process is carried out automatically, realizing fully automatic production.

Second, the pipe-beating surface is set to be an inclined surface that gradually rises from front to back. During the process of beating the pipe fitting, the pipe-beating surface first contacts the front end of the pipe fitting, causing the cutting mark on the upper part of the pipe fitting to crack first. As the beating piece continues to move downward, the contact area between the beating piece and the pipe fitting gradually increases until the front end of the pipe fitting is completely broken. With this design, only a small impact force is needed to break the pipe fitting, which can reduce the deformation of the pipe fitting. In addition, during this process, the part of the pipe fitting that is subject to the greatest impact force is the front end of the pipe fitting. Even if the pipe fitting is deformed during this process, only the front end of the pipe fitting is deformed. In the subsequent process, a pipe end shaping device is required to shape the pipe end, and the deformed part can be repaired during the shaping process.

Third, the hole expansion assembly is set outside the turntable, so that the turntable is not subjected to force when the straight pipe is expanded, which is beneficial to improving the service life of the turntable.

Fourth, since there must be a gap between the turntable and the reaming assembly, when the second push rod pushes the tubular workpiece backward to the gap, the second plug on the second push rod can hold up the tubular workpiece to prevent the rear end of the tubular workpiece from drooping and being unable to be transported to the working position of the reaming assembly.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the production process of a finished straight pipe;

Fig. 2 is a perspective view of the present invention;

3 is a schematic diagram of the positional relationship between the cutting device, the receiving member and the turntable when the present invention is in the first working condition;

4 is a schematic diagram of the positional relationship between the cutting device, the receiving member and the turntable when the present invention is in the second working condition;

5 is a schematic diagram of the positional relationship between the cutting device, the receiving member and the turntable when the present invention is in the third working condition;

FIG6 is an enlarged view of portion A in FIG5 ;

7 is a schematic diagram showing the positional relationship between the snap-off assembly, the pipe fitting, and the receiving member;

Fig. 8 is a perspective view of the turntable;

FIG9 is a diagram showing the position relationship between the reaming assembly and the turntable when the reaming assembly is in the first working condition;

FIG10 is a diagram showing the position relationship between the reaming assembly and the turntable when the reaming assembly is in the second working condition;

FIG11 is an enlarged view of portion B in FIG10 ;

FIG. 12 is a schematic structural diagram of the shaping knife group.

Best Mode for Carrying Out the Invention

Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are 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 should not be understood as a limitation on the present invention.

In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. 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 in combination with the specific content of the technical solution.

1 to 12 , the present invention proposes a straight tube cutting and tube end processing integrated machine, comprising a frame 1, on which are disposed: a cutting device, a receiving member 32, a turntable 5, a feeding device, a tube end shaping device and a straight tube processing device, the cutting device being used to cut the long strip of tube 2 into a tubular workpiece 21, the receiving member 32 being provided with a receiving groove 321 for receiving the cut tubular workpiece 21, the turntable 5 being provided with a tooling fixture 51 capable of clamping the tubular workpiece 21, the feeding device being used to transport the tubular workpiece 21 in the receiving groove 321 to the tooling fixture 51 on the turntable 5, the tube end shaping device being used to shape the end of the tubular workpiece 21; the straight tube processing device being used to expand or shrink the shaped tubular workpiece 21, and the turntable 5 being connected with a turntable driving device capable of driving it to rotate.

The turntable driving device uses a motor as a power source to drive the turntable 5 to rotate. When the turntable 5 rotates, the fixture 51 is switched between the working position of the feeding device, the working position of the pipe end shaping device, and the working position of the straight pipe processing device.

In a preferred embodiment of the present invention, the material cutting device includes a cutting assembly and a breaking assembly, wherein the cutting assembly includes a support 41 capable of supporting the pipe 2 and a blade 42 capable of rotating around the pipe 2, and the blade 42 marks a circumferential cutting mark 201 on the surface of the pipe 2 when rotating around the pipe 2. The specific structure of the cutting assembly is existing, for example, the same structure as the pipe cutting device in the utility model patent with publication number CN 213002946 U can be adopted.

The snapping assembly includes a pipe clamping device capable of clamping the pipe 2 , a snapping member 311 capable of snapping the pipe 2 , and a snapping driver 312 capable of driving the snapping member 311 to move.

The pipe clamping device includes a pipe support 351 fixed on the support frame and a pipe pressing plate 352 located on the pipe support 351. The pipe support 351 is provided with a first pipe clamping groove for clamping the pipe 2. The pipe pressing plate 352 is provided with a second pipe clamping groove for clamping the pipe 2. The pipe pressing plate 352 is connected to a pipe clamping driver 353 capable of driving it to move up and down. Preferably, the pipe clamping driver 353 is a cylinder.

5 and 6, the pipe clamping device is located at the front side of the cutting assembly, the storage groove 321 is located below the snapping member 311, the lower surface of the snapping member 311 is provided with an inclined snapping surface 3111, the height of the snapping surface 3111 gradually increases from front to back, and the snapping driver 312 is preferably a cylinder. When the snapping driver 312 drives the snapping member 311 to move downward, the snapping surface 3111 presses against the front end of the pipe fitting 2 to break the front part of the pipe fitting 2 from the cutting mark 201. With such a design, during the downward movement of the snapping member 311, the snapping surface 3111 first contacts the front end of the pipe fitting 2, causing the cutting mark 201 on the upper part of the pipe fitting 2 to crack first, and as the snapping member 311 continues to move downward, the contact area between the snapping member 311 and the pipe fitting 2 gradually increases until the front end of the pipe fitting 2 is completely broken. With such a design, only a small impact force is required to snap the pipe fitting 2, which can reduce the deformation of the pipe fitting 2. In addition, during this process, the part of the pipe fitting 2 that is subject to the greatest impact force is the front end of the pipe fitting 2. Even if the pipe fitting 2 is deformed during this process, only the front end of the pipe fitting 2 is deformed. In subsequent processes, a pipe end shaping device is required to shape the pipe end, and the deformed part can be repaired during the shaping process.

Furthermore, the lower surface of the snapping piece 311 is provided with a linear groove 3112 into which the pipe 2 can be embedded, and the snapping surface 3111 is provided at the bottom of the linear groove 3112. The snapping surface 3111 is a concave cylindrical surface, and the axis of the concave cylindrical surface gradually rises from front to back. With such a design, when the snapping piece 311 moves downward to snap the pipe 2, the contact area between the snapping surface 3111 and the pipe 2 can be increased, the pressure can be reduced, and the deformation of the pipe 2 can be reduced.

2 and 6 , the disk surface of the turntable 5 is vertically arranged and can rotate around a horizontal axis. One end of the storage groove 321 is provided with a pipe outlet 322 facing the turntable 5. The feeding device includes a first push rod 331 and a push-up driver 332 capable of driving the first push rod 331 to move along the storage groove 321. One end of the first push rod 331 has a first plug 3311 capable of being inserted into the tubular workpiece 21 and lifting the tubular workpiece 21. The first push rod 331 is also provided with a push tube structure capable of abutting against the end face of the tubular workpiece 21. After the first plug 3311 of the first push rod 331 is inserted into the tubular workpiece 21, the tubular workpiece 21 is pushed out from the pipe outlet 322 to the loading station of the turntable 5. The advantage of adopting such a design is that, since there must be a gap between the vertically arranged turntable 5 and the receiving member 32, when the tubular workpiece 21 is pushed forward to the gap, the first plug 3311 on the first push rod 331 can support the tubular workpiece 21, thereby preventing the front end of the tubular workpiece 21 from drooping downward and being unable to be transported to the tooling fixture 51 on the turntable 5.

The push-pushing driver 332 is preferably a pneumatic cylinder, a hydraulic cylinder or the like. The push-tube structure may adopt a step 3312 disposed on the first push rod 331, or a radial rod disposed on the outer side wall of the first push rod 331. The free end of the first plug 3311 is provided with a chamfer to facilitate insertion into the inner hole of the tubular workpiece 21.

Preferably, the receiving groove 321 is a V-shaped groove, the bottom surface of the receiving groove 321 is an arc surface that matches the tubular workpiece 21, and the outlet 322 is a round hole that can guide the tubular workpiece 21, and the round hole is arranged on the inner end surface of the receiving groove 321. Specifically, the arc surface at the bottom of the receiving groove 321 is a cylindrical arc surface, which is coaxial with the outlet 322.

In certain embodiments of the present invention, the above-mentioned cutting device may also adopt other structural forms, for example, a structure composed of a cutting component and a breaking component, wherein the cutting component is used to make a circumferential cutting mark 201 on the pipe 2, and the breaking component is used to process the pipe 2 and break it from the cutting mark 201, thereby forming a tubular workpiece 21.

2 and 12, the pipe end shaping device includes two shaping knife groups 6 respectively arranged on both sides of the rotating disk 5 and a feed driver capable of driving the two shaping knife groups 6 to move closer to or away from the rotating disk 5. The shaping knife group 6 includes a shaping bracket 61, a knife shaft 62 arranged on the shaping bracket 61, a shaping knife head 63 detachably mounted on the knife shaft 62, and a shaping driver 64 capable of driving the knife shaft 62 to rotate. The feed driver adopts a forward and reverse motor, and drives the shaping knife group 6 to move forward and backward through a screw nut pair to achieve feeding and retracting. The shaping driver 64 adopts a motor, and the knife shaft 62 is mounted on the output pump of the motor. The shaping knife head 63 is detachably mounted on the shaft by threaded connection or screw fixing. Different knives can be replaced according to needs to perform different shaping operations on the pipe end. For example, it can be replaced with a milling cutter capable of removing the end of the tubular workpiece 21; it can also be replaced with a tool capable of shaping the inner side edge of the tube end; and a combination tool can also be used to shape both the inner side edge and the outer side edge of the tube end.

8 , the specific structure of the fixture 51 is as follows, including a fixed clamp block 511 and a movable clamp block 512. A pipe clamping groove is provided on the fixed clamp block 511 on a side facing the movable clamp block 512, and a pipe clamping groove is also provided on the movable clamp block 512 on a side facing the fixed clamp block 511. The turntable 5 is also provided with a driver 513 capable of driving the movable clamp block 512 to reciprocate relative to the fixed clamp block 511. The driver 513 is preferably a cylinder, an electric push rod or the like.

In a preferred embodiment of the present invention, the straight tube processing device includes a reaming assembly 7 located at the rear side of the turntable 5 and a tube delivery assembly 8 located at the front side of the turntable 5. The tube delivery assembly 8 includes a second push rod 81 and a tube delivery driver 82 capable of driving the second push rod 81 to move forward and backward. When the second push rod 81 moves backward, it pushes the tubular workpiece 21 on the turntable 5 to the working position of the reaming assembly 7. The tube delivery driver 82 is preferably a cylinder, an electric push rod or the like.

Referring to Fig. 11, one end of the second push rod 81 has a second plug 811 that can be inserted into the tubular workpiece 21 and hold up the tubular workpiece 21. The second push rod 81 is also provided with a push tube structure that can abut against the end surface of the tubular workpiece 21. After the second plug 811 is inserted into the tubular workpiece 21, the tubular workpiece 21 is pushed to the working position of the reaming assembly 7. Preferably, the push tube structure is a step provided on the second push rod 81, and the free end of the second plug 811 is provided with a chamfer to facilitate insertion into the tubular workpiece 21. The advantage of adopting such a design is that, since there must be a gap between the turntable 5 and the reaming assembly 7, when the second push rod 81 pushes the tubular workpiece 21 backward to the gap, the second plug 811 on the second push rod 81 can hold up the tubular workpiece 21, thereby preventing the rear end of the tubular workpiece 21 from drooping downward and being unable to be transported to the working position of the reaming assembly 7.

In a preferred embodiment of the present invention, the reaming assembly 7 includes a reaming die 71 fixed on the frame 1, an expansion rod 72 arranged behind the reaming die 71, the expansion rod 72 is connected to a reaming driver 73 capable of driving it to move forward and backward, the reaming die 71 is provided with a stepped hole 711 for the tubular workpiece 21 to pass through, the stepped hole 711 includes a first hole section 7111 and a second hole section 7112 located behind the first hole section 7111, the diameter of the second hole section 7112 is larger than the diameter of the first hole section 7111, the reaming die 71 is provided with a plug plate 712 and a slot 713 intersecting with the first hole section 7111, the plug plate 712 is connected to a plug plate driver 714 capable of driving the plug plate to be inserted into the slot 713 and block the first hole section 7111. The plug plate driver 714 and the reaming driver 73 are preferably cylinders. After the second push rod 81 pushes the tubular workpiece 21 into the stepped hole 711, the front end of the expansion rod 72 is inserted into the tubular workpiece 21 from the rear port of the tubular workpiece 21, and then the second push rod 81 withdraws forward, and then the insert plate 712 is inserted into the slot 713, and then the expansion rod 72 is pushed forward again, and after the rear end of the tubular workpiece 21 is pressed against the insert plate 712, the tubular workpiece 21 gradually deforms, and finally forms a finished straight tube 22. Finally, the insert plate 712 is pulled upward, and the second push rod 81 moves forward again to push the finished straight tube 22 out of the expansion die 71.

In certain embodiments of the present invention, the straight tube processing device may also adopt other structural forms, for example, a shrinking assembly may be used instead of the above-mentioned expanding assembly 7.

The working process of the present invention is as follows: first, the cutting mechanism cuts a cutting mark 201 on the outer wall of the pipe 2, then, driven by an external power device, the pipe 2 is pushed forward, and the pipe 2 is snapped by a snapping assembly or pulled by a pulling assembly, and the formed tubular workpiece 21 falls into the receiving groove 321 of the receiving member 32; then, the feeding and pushing device pushes the tubular workpiece 21 out of the receiving groove 321, so that the tubular workpiece 21 is clamped by the fixture 51 on the turntable 5; Then the turntable 5 rotates one station to allow the tubular workpiece 21 to enter the tube end shaping station, and then the two groups of shaping knife groups 6 respectively shape the two ends of the tubular workpiece 21; after the shaping is completed, the turntable 5 rotates one station again to move the tubular workpiece 21 to the unloading station, and then the fixture 51 is released, and the second push rod 81 pushes the tubular workpiece 21 backward to the shrinking assembly or the expanding assembly 7. After the expansion assembly 7 or the shrinking assembly shrinks the hole, a finished straight tube 22 with one end thick and the other end thin can be formed.

The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or directly or indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

A straight tube cutting and tube end processing integrated machine, characterized in that it comprises a frame (1), on which are arranged:

A cutting device, used for cutting the long strip of pipe (2) into a tubular workpiece (21);

A receiving member (32), wherein the receiving member (32) is provided with a receiving groove (321) for receiving the cut tubular workpiece (21);

A turntable (5), wherein the turntable (5) is provided with a fixture (51) capable of clamping a tubular workpiece (21);

A feeding device, used for conveying the tubular workpiece (21) in the receiving groove (321) to a fixture (51) on the rotating disk (5);

A tube end shaping device, used for shaping the end of a tubular workpiece (21);

A straight tube processing device is used to expand or shrink a shaped tubular workpiece (21), wherein the turntable (5) is connected to a turntable driving device capable of driving the turntable to rotate, and when the turntable (5) rotates, the fixture (51) is switched between a working position of a feeding device, a working position of a tube end shaping device, and a working position of a straight tube processing device.
According to claim 1, a straight tube cutting and tube end processing integrated machine is characterized in that the cutting device comprises a cutting component and a snapping component, the cutting component comprises a support (41) capable of supporting the tube (2) and a blade (42) capable of making a circumferential cutting mark (201) on the surface of the tube (2), and the snapping component comprises a tube clamping device capable of clamping the tube (2), a snapping component (311) capable of snapping the tube (2), and a snapping driver (312) capable of driving the snapping component (311) to move.
According to claim 2, a straight tube cutting and tube end processing integrated machine is characterized in that the tube clamping device is located at the front side of the cutting assembly, the storage groove (321) is located below the snapping piece (311), and the lower surface of the snapping piece (311) is provided with an inclined tube-snapping surface (3111), and the height of the tube-snapping surface (3111) gradually increases from front to back. When the snapping driver (312) drives the snapping piece (311) to move downward, the tube-snapping surface (3111) presses against the front end of the tube fitting (2) so that the front part of the tube fitting (2) is broken from the cutting mark (201).
According to claim 3, a straight tube cutting and tube end processing integrated machine is characterized in that the lower surface of the breaking piece (311) is provided with a straight groove (3112) for the tube (2) to be embedded therein, and the tube-breaking surface (3111) is provided at the bottom of the straight groove (3112), and the tube-breaking surface (3111) is a concave cylindrical surface, and the axis of the concave cylindrical surface gradually rises from front to back.
According to claim 1, a straight tube cutting and tube end processing integrated machine is characterized in that the disk surface of the turntable (5) is arranged vertically, one end of the storage groove (321) is provided with a pipe outlet (322) facing the turntable (5), the feeding device comprises a first push rod (331) and a push-up driver (332) capable of driving the first push rod (331) to move along the storage groove (321), one end of the first push rod (331) has a first plug (3311) capable of being inserted into the tubular workpiece (21) and lifting the tubular workpiece (21), the first push rod (331) is also provided with a push tube structure capable of abutting against the end face of the tubular workpiece (21), and the first plug (3311) of the first push rod (331) is inserted into the tubular workpiece (21) and pushes the tubular workpiece (21) out of the pipe outlet (322) to the loading station of the turntable (5).
According to claim 1, a straight tube cutting and tube end processing integrated machine is characterized in that the tube end shaping device includes two groups of shaping knife groups (6) respectively arranged on both sides of the turntable (5) and a feed driver capable of driving the two groups of shaping knife groups (6) to move closer to or away from the turntable (5), and the shaping knife group (6) includes a shaping bracket (61), a knife shaft (62) arranged on the shaping bracket (61), a shaping knife head (63) detachably mounted on the knife shaft (62), and a shaping driver (64) capable of driving the knife shaft (62) to rotate.
According to claim 1, a straight tube cutting and tube end processing integrated machine is characterized in that the disk surface of the turntable (5) is vertically arranged, and the straight tube processing device includes a reaming assembly (7) located at the rear side of the turntable (5) and a tube feeding assembly (8) located at the front side of the turntable (5), and the tube feeding assembly (8) includes a second push rod (81) and a tube feeding driver (82) capable of driving the second push rod (81) to move forward and backward, and when the second push rod (81) moves backward, it pushes the tubular workpiece (21) on the turntable (5) to the working position of the reaming assembly (7).
According to claim 7, a straight tube cutting and tube end processing integrated machine is characterized in that one end of the second push rod (81) has a second plug (811) that can be inserted into the tubular workpiece (21) and hold up the tubular workpiece (21), and the second push rod (81) is also provided with a push tube structure that can abut against the end face of the tubular workpiece (21), and after the second plug (811) is inserted into the tubular workpiece (21), the tubular workpiece (21) is pushed to the working position of the reaming assembly (7).
According to claim 7, a straight tube cutting and tube end processing integrated machine is characterized in that the reaming assembly (7) includes a reaming die (71) fixed on the frame (1), and an expansion rod (72) arranged behind the reaming die (71), the expansion rod (72) is connected to a reaming driver (73) capable of driving it to move forward and backward, the reaming die (71) is provided with a stepped hole (711) for the tubular workpiece (21) to pass through, the second push rod (81) pushes the tubular workpiece (21) into the stepped hole (711) when moving backward with the tubular workpiece (21), and the expansion rod (72) is inserted into the tubular workpiece (21) when moving forward and cooperates with the stepped hole (711) to extrude and expand the tubular workpiece (21).
According to claim 9, a straight tube cutting and tube end processing integrated machine is characterized in that the stepped hole (711) includes a first hole section (7111) and a second hole section (7112) located after the first hole section (7111), the diameter of the second hole section (7112) is larger than the diameter of the first hole section (7111), and the hole expansion mold (71) is provided with a plug plate (712) and a slot (713) intersecting with the first hole section (7111), and the plug plate (712) is connected to a plug plate driver (714) that can be driven to be inserted into the slot (713) and block the first hole section (7111).