Anti-tensile testing device for PVC (polyvinyl chloride) water supply pipe

Abstract

The utility model relates to the technical field of tensile testing of pipes, in particular to a tensile testing device for a PVC (Polyvinyl Chloride) water supply pipe, which can be used for more conveniently and accurately measuring the tensile distance when the pipe is pulled to deform, improving the testing efficiency and accuracy, enabling the clamping stress at two ends of the pipe to be more uniform, preventing the pipe from being separated during stretching, and improving the tensile strength of the PVC water supply pipe. Normal pipe stretching detection is ensured, and the practicability is improved; comprising a rack, a servo motor is fixedly installed at the top end of the rack, a transmission lead screw is rotationally arranged on the rack, the top end of the transmission lead screw is fixedly connected with the output end of the servo motor, and the outer end of a pull rope of a pull rope displacement sensor is fixedly connected to the left side of the bottom end of a movable plate; and the two sets of connecting shafts are rotationally installed at the top end of the inner side of the rack and the bottom end of the movable plate correspondingly, positioning columns are installed in the two sets of clamping discs in a screwed mode, multiple sets of clamping screws are installed on the outer walls of the two sets of clamping discs in an annular array in a screwed mode, and screwing handles are fixedly arranged on the multiple sets of clamping screws.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of pipe material tensile test, especially to a PVC water supply pipe material tensile test device. BACKGROUND

[0002] VC water supply pipe is with health level polyvinyl chloride resin as main raw material, adds the stabilizer, lubricant, filling agent, colorant etc. of quantitative, extrusion forming and injection molding machine injection molding of plastic extruder one kind of pipe material, and the PVC water supply pipe needs to carry out tensile detection after production, ensures the PVC water supply pipe quality of production to reach use standard.

[0003] When detecting, generally select a section of pipe material as the sample pipe for detection, the pipe material tensile detection device in the prior art, for example, the utility model patent of patent publication No. CN212932204U discloses a drainage pipe tensile property detection device, specifically, including the base, the first sliding slot is symmetrically set in the both sides of the base, the first pulley is movably connected in the first sliding slot, the movable column is fixedly connected at the top of the first pulley, the first motor is fixedly connected at the both ends of the top of the base, the winding wheel is fixedly connected to one end of the first motor, the tension belt is fixedly connected to one end of the winding wheel, the fixed buckle is fixedly connected to the end of the movable column close to the first motor, through the cooperation of the first sliding slot, the first pulley, the winding wheel, the tension belt, the movable column and the fixed buckle, the first motor can drive the movable column to stretch the drainage pipe.

[0004] In the above prior art, although the pipe material tensile detection function can be realized, when the pipe material is stretched for detection, the elongation distance of the pipe material when stretched to deformation can only be measured by manual measurement, the measurement is not convenient and accurate, thereby affecting the test efficiency and accuracy, and when the pipe material is clamped, the clamping stress of the both ends of the pipe material is not uniform, the pipe material may be separated during stretching, the normal operation of the pipe material tensile detection is affected, and the practicability is insufficient. UTILITY MODEL CONTENT

[0005] To solve the above technical problems, the utility model provides a PVC water supply pipe material tensile test device, which can measure the elongation distance of the pipe material when stretched to deformation more conveniently and accurately, improve the test efficiency and accuracy, make the clamping stress of the both ends of the pipe material more uniform, avoid the pipe material from being separated during stretching, ensure the normal operation of the pipe material tensile detection, and improve the practicability.

[0006] TECHNICAL SCHEME

[0007] In order to achieve the above object, the utility model provides the following technical scheme: a PVC water supply pipe material tensile test device, including frame, tensile test mechanism and clamping mechanism, the tensile test mechanism includes servo motor, servo motor fixed mounting is at the top of frame, and the transmission screw rod is rotationally arranged on the frame, and the transmission screw rod top is fixedly connected with the output end of servo motor, and two groups of guide columns are fixedly installed on the frame left and right symmetry, and the moving plate is slidably sleeved on the two groups of guide columns, and the moving plate is threadedly connected on the transmission screw rod, and the pull rope displacement sensor is fixedly installed on the lower left side of the inner wall of the frame left side, and the pull rope outer end of pull rope displacement sensor is fixedly connected on the bottom left side of moving plate, and the pull rope is parallel with the guide column, the clamping mechanism includes two groups of chucks, and the connecting shaft is fixedly arranged on the two groups of chucks, and the connecting shaft is integrally formed with the chuck, and the two groups of connecting shafts are rotationally installed at the top of the inner side of frame and the bottom of moving plate respectively, and the positioning column is screwedly arranged in the two groups of chucks, and a plurality of clamping screw rods are screwedly arranged on the outer wall of the two groups of chucks, and the handle is fixedly arranged on the plurality of clamping screw rods.

[0008] Preferably, the bottom end of the positioning column is fixedly provided with a threaded column, the threaded column is integrally formed with the positioning column, the chuck and the connecting shaft are provided with threaded mounting holes, the positioning column is screwedly arranged in the chuck through the cooperation of the threaded column and the threaded mounting hole, and the positioning column has a plurality of diameters matched with the inner diameters of the pipes.

[0009] Preferably, the front end of the frame is provided with a protection assembly, the protection assembly includes a protection plate, a rotating shaft is fixedly arranged on the left side of the front end of the frame, the protection plate is rotationally installed on the rotating shaft, an L-shaped clamping plate is fixedly arranged on the right side of the front end of the frame, and the protection plate is clamped on the L-shaped clamping plate.

[0010] Preferably, the front end of the frame is provided with a protection assembly, the protection assembly includes a protection plate, a rotating shaft is fixedly arranged on the left side of the front end of the frame, the protection plate is rotationally installed on the rotating shaft, an L-shaped clamping plate is fixedly arranged on the right side of the front end of the frame, and the protection plate is clamped on the L-shaped clamping plate.

[0011] Preferably, the top end of the positioning column is symmetrically provided with two semicircular grooves.

[0012] Preferably, the moving plate is provided with two guide holes, a sliding sleeve is fixedly arranged in the guide hole, and the moving plate is slidably sleeved on the two guide columns through the cooperation of the two sliding sleeves.

[0013] The utility model discloses a beneficial effect compared with prior art is: when using, the pipe material of detection is placed in the clamping chuck below vertically, and the positioning column diameter is same with the pipe material inner diameter, makes the pipe material bottom end sleeve on the positioning column, then starts servo motor, makes servo motor drive transmission screw rod clockwise rotation, and then makes transmission screw rod drive moving plate and move down along with the guide column, and the clamping chuck cover buckle is in the pipe material top end, and the pipe material top end is sleeve on the positioning column above, and the length of pipe material both ends sleeve on the positioning column is enough, when this pull rope displacement sensor on the pull rope contracts, then twists the handle and twists the clamping screw, makes clamping screw top tight on the pipe material outer wall, through the rotation clamping chuck, can conveniently twist the screw of multiple groups of clamping screw, after the pipe material both ends top tight through multiple groups of clamping screw, can carry out the tensile test, when the tensile test, through starting servo motor, makes servo motor drive transmission screw rod counterclockwise rotation, and then makes transmission screw rod drive moving plate and move up along with the guide column, with the moving plate of up -and -down, make the pipe material gradually be stretched, and moving plate still drive the pull rope displacement sensor on the pull rope extension, when the pipe material appears deformation, stop stretching, in this process, the pull rope displacement sensor exports an electric signal with the pull rope movement distance proportion, and the displacement of moving plate can be obtained through the output signal measurement of external connection computer, and this displacement is the elongation distance of pipe material when being pulled to deformation, through the displacement distance of pipe material being pulled to deformation, judge whether the tensile property of pipe material is up to standard, this mode can make the elongation distance measurement of pipe material when being pulled to deformation more convenient and accurate, improve test efficiency and accuracy, make the clamping stress of pipe material both ends more uniform, avoid the pipe material to appear to separate when stretching, ensure the normal progress of pipe material tensile test, improve practicality. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the axonometric structure schematic diagram of the utility model;

[0015] Figure 2 It is the axonometric structure schematic diagram of the utility model after removing the protective plate;

[0016] Figure 3 It is the axonometric structure schematic diagram of the clamping mechanism in the utility model;

[0017] Figure 4 It is the axonometric structure schematic diagram of the utility model Figure 3 Turned over;

[0018] Figure 5 It is the axonometric section structure schematic diagram of the clamping mechanism in the utility model;

[0019] Marked in the drawing: 1, rack; 2, servo motor; 3, transmission screw; 4, guide column; 5, moving plate; 6, pull rope displacement sensor; 7, chuck; 8, connecting shaft; 9, positioning column; 10, threaded column; 11, clamping screw; 12, twist handle; 13, protective plate; 14, rotating shaft; 15, L-shaped clamping plate; 16, handle; 17, semicircular groove; 18, sliding sleeve. DETAILED DESCRIPTION

[0020] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the present application, but are not used to limit the scope of the present application.

[0021] EXAMPLE

[0022] Please refer to Figures 1-5The utility model discloses a PVC water supply pipe material tensile test device, including frame 1, servo motor 2 fixed mounting is in the top of frame 1, is rotationally equipped with transmission screw rod 3 on frame 1, and the top of transmission screw rod 3 is fixedly connected with the output end of servo motor 2, and two groups of guide columns 4 are fixedly installed on frame 1 left and right symmetry, and two groups of guide columns 4 are slidably equipped with moving plate 5, and moving plate 5 is threadedly connected and is equipped on transmission screw rod 3, and the lower fixed mounting of frame 1 left side inner wall has pull rope displacement sensor 6, and the outer end of pull rope displacement sensor 6 is fixedly connected in the bottom left side of moving plate 5, and the pull rope is parallel with guide column 4, and the connecting shaft 8 is fixedly equipped on two groups of chuck 7, and the connecting shaft 8 is integrally formed with chuck 7, and two groups of connecting shaft 8 are rotationally installed in the top of frame 1 inboard and the bottom of moving plate 5 respectively, and the positioning column 9 is screw equipped in two groups of chuck 7, and the outer wall of two groups of chuck 7 is annular array screw and is equipped with a plurality of clamping screw rod 11, and a plurality of clamping screw rod 11 are fixedly equipped with screw handle 12, when using, the pipe material to be detected is placed on the chuck 7 below vertically, and the diameter of positioning column 9 is same with the inner diameter of pipe material, so that the pipe material bottom end is sleeved on positioning column 9, then start servo motor 2, make servo motor 2 drive transmission screw rod 3 clockwise rotation, further make transmission screw rod 3 drive moving plate 5 along with guide column 4 and move down, make the chuck 7 of upper side cover buckle on the top of pipe material, and the top of pipe material is sleeved on the positioning column 9 of upper side, and the length of pipe material both ends is sleeved on positioning column 9 enough, when this, the pull rope of pull rope displacement sensor 6 contracts, then through screw handle 12 and twists clamping screw rod 11, make clamping screw rod 11 and tightly press on the outer wall of pipe material, through the rotation of chuck 7, can conveniently twist a plurality of clamping screw rod 11, after the both ends of pipe material are tightly pressed by a plurality of clamping screw rod 11, can carry out tensile test, when tensile test, through starting servo motor 2, make servo motor 2 drive transmission screw rod 3 counterclockwise rotation, further make transmission screw rod 3 drive moving plate 5 along with guide column 4 and move up, along with the moving of moving plate 5, make pipe material gradually be stretched, and moving plate 5 also drive the pull rope of pull rope displacement sensor 6 and stretch, when pipe material appears deformation, stop stretching, in this process, pull rope displacement sensor 6 outputs an electric signal proportional with the moving distance of pull rope, and the displacement of moving plate 5 can be obtained through the output signal of the computer connected outside, and the displacement is the elongation distance when pipe material is stretched to deformation, through judging the displacement distance when pipe material is stretched to deformation, whether the tensile property of pipe material meets the standard is judged, the method can make the elongation distance measurement when pipe material is stretched to deformation more convenient and accurate, improve test efficiency and accuracy, make the clamping stress of pipe material both ends more uniform, avoid pipe material to appear to separate when stretching, ensure the normal progress of pipe material tensile test, improve practicality.

[0023] The bottom end of the positioning column 9 is fixedly provided with a threaded column 10, the threaded column 10 is integrally formed with the positioning column 9, the chuck 7 and the connecting shaft 8 are provided with threaded mounting holes, the positioning column 9 is screwed in the chuck 7 through cooperation of the threaded column 10 and the threaded mounting hole, and the positioning column 9 is provided with various diameters matched with the inner diameter of the pipe material, and the diameter of the threaded column 10 is constant; in use, the positioning column 9 with a diameter matched with the pipe material can be selected according to the inner diameter of the pipe material to be measured, so that the inner wall of the pipe material can be kept in close contact with the outer wall of the positioning column 9, and different types of pipe materials can be conveniently fixed and clamped.

[0024] The front end of the rack 1 is provided with a protection assembly, the protection assembly comprises a protection plate 13, a rotating shaft 14 is fixedly arranged at the left side of the front end of the rack 1, the protection plate 13 is rotatably arranged on the rotating shaft 14, an L-shaped clamping plate 15 is fixedly arranged at the right side of the front end of the rack 1, and the protection plate 13 is horizontally clamped on the L-shaped clamping plate 15; in use, the protection plate 13 can be turned to the left side to clamp and fix the pipe material, and after the pipe material is fixed, the protection plate 13 is turned to be horizontal, so that the protection plate 13 is clamped on the L-shaped clamping plate 15, the pipe material is blocked by the protection plate 13, and accidents during pipe material stretching are avoided, and the protection of personnel is improved.

[0025] The right upper corner of the front end of the protection plate 13 is fixedly provided with a handle 16; the handle 16 can make the protection plate 13 more convenient to open and close.

[0026] The top end of the positioning column 9 is symmetrically provided with two groups of semicircular grooves 17; the semicircular grooves 17 are arranged at the top end of the positioning column 9, a handle for screwing the positioning column 9 is formed, so that the positioning column 9 is more convenient to disassemble and assemble.

[0027] The moving plate 5 is provided with two groups of guide holes, a sliding sleeve 18 is fixedly arranged in the guide hole, and the moving plate 5 is slidably sleeved on the two groups of guide columns 4 through cooperation of the two groups of sliding sleeves 18; the sliding sleeve 18 can make the moving plate 5 more smoothly slide on the guide column 4.

[0028] The utility model discloses a PVC water supply pipe material tensile test device, its working principle, when using, the pipe material of detection is placed vertically on the chuck 7 below, and the positioning column 9 diameter is same with the pipe material inner diameter, makes the pipe material bottom end sleeve on the positioning column 9, then starts servo motor 2, makes servo motor 2 drive transmission screw rod 3 clockwise rotation, and then makes transmission screw rod 3 drive moving plate 5 along with guide column 4 and move down, and the chuck 7 upper cover buckle is in the pipe material top end, and the pipe material top end is sleeve on the positioning column 9 above, and the length of pipe material both ends sleeve on the positioning column 9 is enough, the pull rope on the pull rope displacement sensor 6 contracts at this time, then through the twist of handle 12 and twists the clamping screw rod 11, makes clamping screw rod 11 top tight on the pipe material outer wall, through the rotation chuck 7, can conveniently twist the clamping screw rod 11 of multiple groups, after the pipe material both ends are top tight through multiple clamping screw rod 11, can carry out tensile test, when tensile test, through starting servo motor 2, makes servo motor 2 drive transmission screw rod 3 counterclockwise rotation, and then makes transmission screw rod 3 drive moving plate 5 along with guide column 4 and move up, along with the moving of moving plate 5, makes the pipe material gradually be stretched, and moving plate 5 also drive the pull rope on the pull rope displacement sensor 6 and stretch, when the pipe material appears deformation, stop stretching, in this process, the pull rope displacement sensor 6 exports an electric signal proportional with the pull rope moving distance, and the displacement of moving plate 5 can be obtained through the output signal measurement of the computer connected outside, and this displacement is the elongation distance when the pipe material is pulled to deformation, and the displacement distance when the pipe material is stretched to deformation is judged to judge whether the tensile property of pipe material is up to standard.

[0029] The utility model discloses a PVC water supply pipe material tensile test device, its installation mode, connecting mode or setting mode are all common mechanical mode, can be implemented as long as the beneficial effect is reached, the servo motor and the pull rope displacement sensor of the utility model discloses a PVC water supply pipe material tensile test device are purchased on the market, and the technical personnel in the industry only need to install and operate according to its attached instruction book.

[0030] The above only is the preferred implementation mode of the utility model, and it should be pointed out that for ordinary technical personnel in the prior art, on the premise of not departing from the technical principle of the utility model, still can make a number of improvements and variations, and these improvements and variations also should be regarded as the protection scope of the utility model.

Claims

1. A tensile strength testing device for PVC water supply pipes, comprising a frame (1), characterized in that, It also includes a tensile testing mechanism and a clamping mechanism; The tensile testing mechanism includes a servo motor (2), which is fixedly installed on the top of the frame (1). A transmission screw (3) is rotatably provided on the frame (1). The top of the transmission screw (3) is fixedly connected to the output end of the servo motor (2). Two sets of guide columns (4) are fixedly installed symmetrically on the left and right sides of the frame (1). A moving plate (5) is slidably mounted on the two sets of guide columns (4). The moving plate (5) is threadedly mounted on the transmission screw (3). A pull rope displacement sensor (6) is fixedly installed on the lower left inner wall of the frame (1). The outer end of the pull rope of the pull rope displacement sensor (6) is fixedly connected to the left side of the bottom end of the moving plate (5). The pull rope is parallel to the guide column (4). The clamping mechanism includes two sets of clamping plates (7), each set of clamping plates (7) is fixedly provided with a connecting shaft (8), the connecting shaft (8) is integrally formed with the clamping plate (7), the two sets of connecting shafts (8) are respectively rotatably installed on the top of the inner side of the frame (1) and the bottom of the moving plate (5), each set of clamping plates (7) is screwed with a positioning post (9), and the outer wall of each set of clamping plates (7) is screwed with multiple sets of clamping screws (11) in a ring array, each set of clamping screws (11) is fixedly provided with a handle (12).

2. The tensile strength testing device for PVC water supply pipes as described in claim 1, characterized in that, The bottom end of the positioning post (9) is fixedly provided with a threaded post (10), which is integrally formed with the positioning post (9). The clamp (7) and the connecting shaft (8) are provided with threaded mounting holes. The positioning post (9) is screwed into the clamp (7) through the mating of the threaded post (10) and the threaded mounting hole. The diameter of the positioning post (9) is provided with various models that match the inner diameter of the pipe, while the diameter of the threaded post (10) remains unchanged.

3. The tensile strength testing device for PVC water supply pipes as described in claim 2, characterized in that, The front end of the frame (1) is provided with a protective component, which includes a protective plate (13). A rotating shaft (14) is fixedly provided on the left side of the front end of the frame (1). The protective plate (13) is rotatably mounted on the rotating shaft (14). An L-shaped clamping plate (15) is fixedly provided on the right side of the front end of the frame (1). The protective plate (13) is horizontally clamped on the L-shaped clamping plate (15).

4. The tensile strength testing device for PVC water supply pipes as described in claim 3, characterized in that, A handle (16) is fixedly provided at the upper right corner of the front end of the protective plate (13).

5. The tensile strength testing device for PVC water supply pipes as described in claim 4, characterized in that, The top of the positioning post (9) is symmetrically provided with two sets of semi-circular grooves (17).

6. The tensile strength testing device for PVC water supply pipes as described in claim 5, characterized in that, The movable plate (5) is provided with two sets of guide holes, and a sliding sleeve (18) is fixedly installed in the guide holes. The movable plate (5) is slidably mounted on two sets of guide columns (4) through the cooperation of the two sets of sliding sleeves (18).

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