Pipe drawing device for steel lining polytetrafluoroethylene pipe

Abstract

The utility model discloses a tube drawing device for a steel lining polytetrafluoroethylene tube. The tube drawing device comprises a support frame, a hard straight pull rod capable of penetrating into a steel pipe is fixedly arranged at one end of the supporting frame, and a chuck capable of being connected with a polytetrafluoroethylene pipe is arranged at the end of the hard straight pull rod; an auxiliary supporting piece, a main supporting piece and a plurality of supporting assemblies are sequentially arranged on the supporting frame in the length direction. The supporting frame is provided with a first driving part used for driving the auxiliary supporting piece to move in the length direction of the supporting frame. The supporting frame is provided with a second driving part used for driving the main supporting piece and the supporting assembly to move in the length direction of the supporting frame. The auxiliary supporting piece and the main supporting piece support the steel pipe to move synchronously so that the hard straight pull rod and the chuck can penetrate through an inner hole of the steel pipe and extend out of the other end, a steel wire rope does not need to penetrate through the steel pipe manually and then the chuck is installed according to an existing method, pipe pulling efficiency is improved, and labor intensity is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to steel pipe processing auxiliary equipment technical field, concretely relates to a kind of steel lining four fluorine pipe pipe drawing device. BACKGROUND

[0002] Steel lining four fluorine pipe is the most widely used conveying pipeline in chemical field, which includes steel pipe with flange and four fluorine pipe sleeved inside steel pipe. In manufacturing process, drawing four fluorine pipe into steel pipe is one of important manufacturing procedures, which is longer in production and is the longest procedure in the whole process.

[0003] Currently, the procedure is mainly operated by hand, and the main equipment is winch with steel wire rope. First, connect the steel wire rope passing through steel pipe with chuck installed on four fluorine pipe by hand, and then start winch to draw four fluorine pipe into steel pipe.

[0004] The current pipe drawing mode of manually threading steel wire rope has the defects of low efficiency and high labor intensity. INVENTION CONTENTS

[0005] To solve the problems of low efficiency and high labor intensity in the existing steel lining four fluorine pipe pipe drawing scheme, the utility model provides a kind of steel lining four fluorine pipe pipe drawing device.

[0006] A kind of steel lining four fluorine pipe pipe drawing device, including support frame;

[0007] The end of the support frame is fixedly provided with a straight hard pull rod capable of penetrating into the inside of the steel pipe, and the end of the straight hard pull rod is provided with a chuck capable of being connected with the four fluorine pipe;

[0008] The support frame is sequentially provided with a secondary support member, a main support member and a plurality of support assemblies along the length direction;

[0009] The support frame is provided with a first driving part for driving the secondary support member to move along the length direction of the support frame;

[0010] The support frame is provided with a second driving part for driving the main support member and the support assembly to move along the length direction of the support frame.

[0011] Preferably, the support frame is provided with a first linear guide rail, and the secondary support member and the main support member are provided with a first slider matched with the first linear guide rail.

[0012] Preferably, the first driving part includes a rack fixedly arranged on the support frame and extending along the length direction of the support frame.

[0013] The secondary support member is provided with a first motor and a first speed reducer connected in adaptation, the output shaft end of the first speed reducer is coaxially fixedly provided with a gear, and the gear is meshingly connected with the rack.

[0014] Preferably, the second driving part includes a driving wheel and a driven wheel provided on the support frame, the driving wheel is adaptively connected to the second motor and the second reducer, and the driving wheel and the driven wheel are covered with a transmission member;

[0015] The bottom ends of the main support member and the support assembly are fixedly connected to the transmission member.

[0016] Preferably, the driven wheel is rotationally engaged with the bearing seat;

[0017] A tightening screw extending along the length direction of the support frame is fixedly provided on the bearing seat, and a connecting plate for the tightening screw to pass through is fixedly provided on the support frame. A tightening nut is threadedly fitted on one side of the tightening screw passing through the connecting plate.

[0018] Preferably, the driving wheel, the driven wheel and the transmission member form a chain transmission structure.

[0019] Preferably, the driving wheel, the driven wheel and the transmission member form a belt transmission structure.

[0020] Preferably, a pull rod support frame is provided on the support frame, and the pull rod support frame is provided with a support wheel for supporting the rigid pull rod.

[0021] Preferably, a reflective photoelectric switch is provided on the main support member.

[0022] Preferably, a lifting mechanism is provided on the secondary support member and the main support member, and the lifting mechanism includes a lifting plate and a lifting drive member for controlling the lifting of the lifting plate, and an inclined lifting surface is provided on the top end of the lifting plate.

[0023] The beneficial effects of the utility model are:

[0024] (1) In the present invention, the auxiliary support member and the main support member support the steel pipe to move synchronously, so that the straight pull rod and the chuck pass through the inner hole of the steel pipe and extend from the other end. There is no need to manually pass the steel wire rope through the steel pipe and then install the chuck according to the existing method, which improves the efficiency of pulling the pipe and reduces labor intensity.

[0025] (2) In the present invention, the main support member and the support assembly are installed on the transmission member. The annular structure of the transmission member can move the support assembly to the lower side, thereby ensuring that the support assembly has a sufficient movement path and saving the length space occupied by the entire device; and the transmission member can not only provide driving force for the main support member, but also support and drive the support assembly.

[0026] (3) The arrangement of the tightening screw, the connecting plate and the tightening nut in the present invention allows the bearing seat to be tightened by tightening the tightening nut, thereby ensuring the tensioning operation of the transmission member. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings in the specification, which constitute a part of this application, are used to provide further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute improper limitations on this application.

[0028] Figure 1 This is a schematic structural perspective diagram of the utility model steel-lined PTFE tube drawing device;

[0029] Figure 2 yes Figure 1 A partial enlarged view of middle A;

[0030] Figure 3 yes Figure 1 A partial enlarged view of B in the middle;

[0031] Figure 4 It is a structural diagram of the lifting mechanism in the utility model;

[0032] in:

[0033] 01-steel pipe, 02-PTFE tube, 03-chuck;

[0034] 1-support frame, 11-first linear guide, 12-first slider, 2-rigid pull rod, 3-auxiliary support, 31-main support, 32-second linear guide, 33-reflective photoelectric switch, 4-rack, 41-first motor, 42-first reducer, 5-support assembly, 6-driving wheel, 61-second motor, 62-second reducer, 7-driven wheel, 71-bearing seat, 72-tensioning screw, 73-connecting plate, 74-tensioning nut, 8-transmission member, 9-pull rod support frame, 91-support wheel, 10-lifting mechanism, 101-lifting plate, 102-inclined lifting surface, 103-second slider. DETAILED DESCRIPTION

[0035] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] See attached Figure 1 -Attached Figure 4 , a steel-lined polytetrafluoroethylene tube drawing device, comprising a support frame 1;

[0037] One end of the support frame 1 is fixedly provided with a rigid straight rod 2 capable of penetrating into the interior of the steel pipe 01, and the end of the rigid straight rod 2 is provided with a chuck 03 capable of connecting to the PTFE tube 02, wherein the chuck 03 is prior art and its specific implementation will not be repeated here;

[0038] A secondary support member 3, a main support member 31 and several support assemblies 5 are sequentially arranged on the support frame 1 along the length direction; wherein the secondary support member 3 and the main support member 31 are used to support the steel pipe 01, and the support assembly 5 is used to support the polytetrafluoroethylene tube 02. The secondary support member 3 and the main support member 31 are provided with a V-shaped steel pipe support groove, and the support assembly 5 is provided with a V-shaped polytetrafluoroethylene tube support groove. A friction-reducing material is provided on the surface of the polytetrafluoroethylene tube support groove, which can reduce the friction between the polytetrafluoroethylene tube 02 and the polytetrafluoroethylene tube support groove during the relative movement and protect the polytetrafluoroethylene tube 02 from being scratched. The friction-reducing material can be selected from nylon material; in addition, when the steel pipe 01 is placed on the steel pipe support groove and the polytetrafluoroethylene tube 02 is placed on the polytetrafluoroethylene tube support groove, the central axes of the steel pipe 01 and the polytetrafluoroethylene tube 02 are collinear;

[0039] The support frame 1 is provided with a first driving portion for driving the auxiliary support member 3 to move along the length direction of the support frame 1;

[0040] The support frame 1 is provided with a second driving portion for driving the main support member 31 and the support assembly 5 to move along the length direction of the support frame 1 .

[0041] Preferably, the support frame 1 is provided with a first linear guide rail 11, and the auxiliary support member 3 and the main support member 31 are provided with a first slider 12 that matches the first linear guide rail 11. Specifically, two first linear guide rails 11 are provided.

[0042] Preferably, the first driving part includes a rack 4 fixedly mounted on the support frame 1 and extending along the length direction of the support frame 1;

[0043] The auxiliary support member 3 is provided with a first motor 41 and a first reducer 42 that are adapted to be connected thereto. A gear is coaxially fixedly provided on the end of the output shaft of the first reducer 42 , and the gear is meshed with the rack 4 .

[0044] Preferably, the second driving part includes a driving wheel 6 and a driven wheel 7 provided on the support frame 1, the driving wheel 6 is adaptively connected to the second motor 61 and the second reducer 62, and a transmission member 8 is sleeved on the driving wheel 6 and the driven wheel 7;

[0045] The bottom ends of the main support member 31 and the support assembly 5 are fixedly connected to the transmission member 8 .

[0046] Specifically, two driving wheels 6 are coaxially fixedly provided on the end of the output shaft of the second reducer 62 , two driven wheels 7 are provided on the support frame 1 , and a transmission member 8 is respectively sleeved on the corresponding driving wheel 6 and driven wheel 7 .

[0047] Preferably, the driven wheel 7 is rotationally engaged with the bearing seat 71;

[0048] A tightening screw 72 extending along the length direction of the support frame 1 is fixedly provided on the bearing seat 71 , and a connecting plate 73 for the tightening screw 72 to pass through is fixedly provided on the support frame 1 . A tightening nut 74 is threadedly fitted on one side of the tightening screw 72 passing through the connecting plate 73 .

[0049] By tightening the tightening nut 74 , the bearing seat 71 is tightened, thereby ensuring the tensioning operation of the transmission member 8 .

[0050] Preferably, the driving wheel 6, the driven wheel 7 and the transmission member 8 form a chain transmission structure.

[0051] Preferably, the driving wheel 6, the driven wheel 7 and the transmission member 8 form a belt transmission structure.

[0052] Preferably, a pull rod support frame 9 is provided on the support frame 1, and a support wheel 91 for supporting the rigid straight pull rod 2 is provided on the pull rod support frame 9. Specifically, the pull rod support frame 9 is located on the support frame 1 between the fixed end of the rigid straight pull rod 2 and the auxiliary support member 3.

[0053] Preferably, a reflective photoelectric switch 33 is provided on the main support member 31 to detect whether the PTFE tube 02 is pulled into place, wherein the reflective photoelectric switch 33 detects the remaining length of the tail of the PTFE tube from the end face of the steel pipe flange.

[0054] Preferably, a lifting mechanism 10 is provided on the secondary support member 3 and the main support member 31 . The lifting mechanism 10 includes a lifting plate 101 and a lifting drive member for controlling the lifting of the lifting plate 101 . An inclined lifting surface 102 is provided on the top of the lifting plate 101 .

[0055] When the inclined lifting surface 102 lifts the steel-lined PTFE tube upward, the steel-lined PTFE tube is freed from the restriction of the corresponding supporting grooves on the auxiliary support member 3 and the main support member 31 and slides down from the inclined lifting surface 102 to achieve unloading.

[0056] Specifically, the secondary support member 3 and the main support member 31 are provided with a second linear guide rail 32 extending in the vertical direction, and the lifting plate 101 is provided with a second sliding block 103 matched with the second linear guide rail 32 .

[0057] Specifically, the lifting drive member is a pneumatic cylinder, an oil cylinder, or an electric telescopic rod, and the movable end of the lifting drive member is fixedly connected to the lifting plate 101 .

[0058] In this application, both the first motor 41 and the second motor 61 are servo motors, allowing the speed of the secondary support member 3 and the main support member 31 to be adjusted during movement. Different speeds are used for the drawing process of tubes with different specifications and different interference fits. This ensures that the PTFE tube is stretched to the optimal level during the drawing process, preventing excessive stress from being generated by excessive stretching and causing the PTFE tube to break. During the dry run, the maximum speed can be used to reduce auxiliary time and improve efficiency.

[0059] A steel-lined PTFE tube drawing device, the specific implementation of which is as follows:

[0060] Start the first motor 41 and the first reducer 42 to move the corresponding secondary support 3 along the first linear guide rail 11 until the distance between the secondary support 3 and the main support 31 matches the length of the steel pipe 01;

[0061] Then, the steel pipe 01 is placed on the auxiliary support 3 and the main support 31, and then the first motor 41, the first reducer 42, the second motor 61, and the second reducer 62 are started, so that the auxiliary support 3 and the main support 31 drive the steel pipe 01 to move toward the pull rod support frame 9 until the rigid straight pull rod 2 is inserted into the steel pipe 01. During this process, the chuck 03 is inserted from one end of the steel pipe 01 and exits from the other end.

[0062] Place the PTFE tube 02 on the support assembly 5 and connect the chuck 03 to one end of the PTFE tube 02;

[0063] Then, the first motor 41, the first reducer 42, the second motor 61, and the second reducer 62 are started again, so that the auxiliary support member 3 and the main support member 31 drive the steel pipe 01 to move toward the direction of the PTFE tube 02. During this process, each support assembly 5 moves away from the steel pipe 01 to withdraw support for the PTFE tube 02, thereby causing the steel pipe 01 to move until the PTFE tube 02 is pulled into place to form a steel-lined PTFE tube.

[0064] Subsequently, the auxiliary support 3 and the main support 31 drive the steel-lined PTFE tube to the unloading station, and then the lifting mechanism 10 is started. During the process of the inclined lifting surface 102 lifting the steel-lined PTFE tube upward, the steel-lined PTFE tube breaks away from the restriction of the corresponding support grooves on the auxiliary support 3 and the main support 31 and slides down from the inclined lifting surface 102 to achieve unloading.

[0065] Afterwards, the auxiliary support member 3 and the main support member 31 are reset, and the above steps are repeated to realize the continuous tube drawing operation of the steel-lined PTFE tube.

[0066] Although the above describes the specific implementation methods of the present invention in conjunction with the accompanying drawings, it is not a limitation of the present invention. Those skilled in the art should understand that on the basis of the technical solution of the present invention, various modifications or variations that can be made by those skilled in the art without creative work are still within the scope of protection of the present invention.

Claims

1. A steel-lined polytetrafluoroethylene tube drawing device, comprising a support frame (1); characterized in that: A rigid straight pull rod (2) capable of penetrating the interior of the steel pipe (01) is fixedly provided at one end of the support frame (1), and a chuck (03) capable of connecting to the polytetrafluoroethylene tube (02) is provided at the end of the rigid straight pull rod (2); The support frame (1) is provided with a secondary support member (3), a main support member (31) and a plurality of support assemblies (5) in sequence along the length direction; The support frame (1) is provided with a first driving part for driving the auxiliary support member (3) to move along the length direction of the support frame (1); The support frame (1) is provided with a second driving portion for driving the main support member (31) and the support assembly (5) to move along the length direction of the support frame (1).

2. The steel-lined PTFE tube drawing device according to claim 1, characterized in that: A first linear guide rail (11) is provided on the support frame (1), and a first sliding block (12) matched with the first linear guide rail (11) is provided on the auxiliary support member (3) and the main support member (31).

3. The steel-lined PTFE tube drawing device according to claim 2, characterized in that: The first driving part comprises a rack (4) fixedly arranged on the support frame (1) and extending along the length direction of the support frame (1); The auxiliary support member (3) is provided with a first motor (41) and a first reducer (42) that are adapted to be connected thereto. A gear is coaxially fixedly provided on the output shaft end of the first reducer (42), and the gear is meshed with the rack (4).

4. The steel-lined PTFE tube drawing device according to claim 2, characterized in that: The second driving part comprises a driving wheel (6) and a driven wheel (7) arranged on the support frame (1); the driving wheel (6) is adaptively connected to the second motor (61) and the second reducer (62); and a transmission member (8) is sleeved on the driving wheel (6) and the driven wheel (7); The main support member (31) and the bottom end of the support assembly (5) are fixedly connected to the transmission member (8).

5. The steel-lined PTFE tube drawing device according to claim 4, characterized in that: The driven wheel (7) is rotationally engaged with the bearing seat (71); A tightening screw (72) extending along the length direction of the support frame (1) is fixedly provided on the bearing seat (71), and a connecting plate (73) for the tightening screw (72) to pass through is fixedly provided on the support frame (1), and a tightening nut (74) is threadedly engaged on one side of the tightening screw (72) passing through the connecting plate (73).

6. The steel-lined PTFE tube drawing device according to claim 4, characterized in that: The driving wheel (6), the driven wheel (7) and the transmission member (8) form a chain transmission structure.

7. The steel-lined PTFE tube drawing device according to claim 4, characterized in that: The driving wheel (6), the driven wheel (7) and the transmission member (8) form a belt transmission structure.

8. The steel-lined PTFE tube drawing device according to claim 1, characterized in that: A pull rod support frame (9) is provided on the support frame (1), and a support wheel (91) for supporting the rigid pull rod (2) is provided on the pull rod support frame (9).

9. The steel-lined PTFE tube drawing device according to claim 1, characterized in that: A reflective photoelectric switch (33) is provided on the main support member (31).

10. The steel-lined PTFE tube drawing device according to claim 1, characterized in that: A lifting mechanism (10) is provided on the secondary support member (3) and the main support member (31), and the lifting mechanism (10) includes a lifting plate (101) and a lifting driving member for controlling the lifting of the lifting plate (101), and an inclined lifting surface (102) is provided at the top end of the lifting plate (101).

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