Distance marking device for plastic pipe test

Abstract

The utility model belongs to the technical field of pipe quality inspection lineation equipment, and provides a scale distance lineation device for a plastic pipe test, which comprises a seat stand and supports symmetrically arranged on the left side and the right side of the seat stand, and the upper end face of the seat stand is provided with two pen assemblies vertically connected with the seat stand and transversely arranged at intervals. The supports on the left side and the right side are provided with rotating shafts which are movably connected with the supports and horizontally arranged, and the rotating shafts on the left side and the right side are coaxially arranged. Three supporting strips movably hinged to the rotating shaft are arranged at the inner end of the rotating shaft, hinged shafts between the supporting strips and the rotating shaft are perpendicular to the axis of the rotating shaft in different planes, and the three supporting strips are evenly distributed in the circumferential direction at intervals with the axis of the rotating shaft as the center. The scale distance scribing device for the plastic pipe test is simple in structure and convenient to use, the phenomenon of deviation in the circumferential scribing process of a pipe body is avoided, the accuracy and reliability of scribing data are guaranteed, and the scribing efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of pipe material inspection marking equipment, and specifically relates to a gauge marking device for testing plastic pipe materials. Background Technology

[0002] In the longitudinal shrinkage rate test of thermoplastic pipes, according to the relevant provisions of standard GB / T 6671-2001, it is necessary to mark smooth, continuous circumferential lines or equally divided tangent lines on the thermoplastic pipes with regular shapes and smooth surfaces. Currently, existing pipe marking machines generally place the plastic pipe in the V-groove of the marking machine, fix the roller with the specified gauge length through a connecting rod, and then press it onto the pipe body. The gauge length is marked by manually rotating the pipe one revolution. However, pipe misalignment often occurs during the marking process, resulting in incomplete circumferential lines and affecting the accuracy and reliability of the gauge marking and test results, especially for pipes with larger diameters. Furthermore, the manual rotation of the pipe during gauge marking is time-consuming, labor-intensive, and complex, and human error often causes pipe misalignment, leading to low gauge marking efficiency.

[0003] Therefore, it is necessary to design a gauge marking device for testing plastic pipes that can at least solve some of the above problems and defects. Summary of the Invention

[0004] To solve the above technical problems, this utility model proposes a gauge marking device for testing plastic pipes. It has a simple structure and is easy to use, avoids the phenomenon of deviation during the marking process of the pipe circumference, ensures the accuracy and reliability of the marking data, and improves the marking efficiency.

[0005] The technical solution of this utility model is:

[0006] This utility model proposes a gauge marking device for testing plastic pipes, including a base and supports symmetrically arranged on the left and right sides of the base. The upper surface of the base is provided with two pen components that are vertically connected to it and arranged laterally at intervals. The supports on the left and right sides are provided with rotating shafts that are movably connected to them and arranged horizontally. The rotating shafts on the left and right sides are arranged coaxially.

[0007] The inner end of the rotating shaft is provided with three support bars that are movably hinged thereto, and the hinge axis between the support bars and the rotating shaft is perpendicular to the axis of the rotating shaft. The three support bars are evenly spaced along the circumferential direction with the axis of the rotating shaft as the center.

[0008] Preferably, the rotating shaft is further provided with a support sleeve movably sleeved on its outer periphery, and a connecting rod movably connected to the support sleeve;

[0009] One end of the connecting rod is movably connected with the strut, and the other end is movably connected with the supporting sleeve, and the axes of the two movable connections are parallel to the axis of the movable connection between the strut and the rotating shaft.

[0010] Preferably, the rotating shaft is further provided with a rotating sleeve movably sleeved on the outer periphery of the rotating shaft, and the rotating sleeve is located at the end of the supporting sleeve away from the strut.

[0011] The rotating sleeve is threadedly connected with the rotating shaft.

[0012] Preferably, the outer wall of the supporting sleeve is provided with two push rings arranged at intervals, the rotating sleeve comprises a clamping and pushing part and a locking part connected with each other, the clamping and pushing part is sleeved on the outer periphery of the supporting sleeve, and the inner wall of the clamping and pushing part is provided with a ring protrusion.

[0013] The ring protrusion is rotatably embedded between the two push rings, and the locking part is sleeved on the outer periphery of the rotating shaft and is threadedly connected with the rotating shaft.

[0014] Preferably, the pen assembly comprises a seat block connected with the seat, a barrel fixed vertically on the seat block, and a writing pen movably embedded in the barrel.

[0015] The barrel is fixedly provided with an extension spring, and the top end of the extension spring abuts against the bottom end of the writing pen.

[0016] Preferably, the barrel is provided with a sliding groove penetrating through the side wall and in the shape of "L", and the writing pen is provided with a push rod movably embedded in the sliding groove.

[0017] Preferably, the seat is provided with two horizontal distance grooves, and a horizontal distance screw rod rotatably penetrating through the distance grooves.

[0018] The seat block is movably embedded in the distance grooves, the seat block is movably sleeved on the outer periphery of the distance screw rod and is threadedly connected with the distance screw rod, and the threads of the distance screw rod located in the two distance grooves are in opposite directions.

[0019] Preferably, the upper end surface of the seat is provided with a distance scale arranged parallel to the distance grooves.

[0020] Preferably, the end of the strut is provided with a pressing head movably connected with the end, and the pressing head is provided with an arc-shaped anti-skid pad fixedly connected with the end.

[0021] The outer end of at least one of the rotating shafts is provided with a crank handle fixedly connected with the outer end.

[0022] Preferably, the bottom of the seat is provided with four support legs arranged at intervals, and the support legs are movably connected with the seat through studs.

[0023] The utility model discloses relative to prior art has below merit and effect:

[0024] (1) adopt the support of left-right symmetry and the rotation axis of rotatable setting on the support, and the rotation axis of left and right sides is coaxial arrangement, guarantee the plastic tubular product clamped between left and right support in the scribing process is in horizontal state, will not have the phenomenon of deviation, avoid the scribing non-enclosed circumference phenomenon caused by pipe material deviation, guarantee the accuracy and reliability of the calibration scribing data;

[0025] (2) adopt three struts of movable hinged setting in the end of rotation axis, and three struts are evenly spaced along the circumferential direction, make three struts and plastic tubular product inner wall abut and thus play the role of fixed support pipe material, guarantee plastic tubular product and rotation axis coaxial and synchronous rotation, avoid the deviation of pipe material sliding;

[0026] (3) adopt the strutting sleeve connected through connecting rod and strut, can change the strutting angle of strut through the axial movement of strutting sleeve, to adapt to the plastic tubular product of different pipe diameter, and practicality is strong and applicable scope is wide, and the plastic tubular product of different pipe diameter can all play the effect of steady support and fixation. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is the use state schematic drawing of plastic tubular product test calibration scribing device in the utility model embodiment;

[0028] Figure 2 It is Figure 1 The enlarged structure schematic drawing of position A in the utility model embodiment;

[0029] Figure 3 It is Figure 1 The enlarged structure schematic drawing of position B in the utility model embodiment;

[0030] Figure 4 It is the structure schematic drawing of plastic tubular product test calibration scribing device in the utility model embodiment;

[0031] Figure 5 It is the internal structure schematic drawing of plastic tubular product test calibration scribing device in the utility model embodiment;

[0032] Figure 6 It is Figure 5 The enlarged structure schematic drawing of position C in the utility model embodiment.

[0033] Mark: 1, seat; 11, mark distance groove; 12, mark distance screw; 13, mark distance scale; 14, leg; 2, support; 3, pen assembly; 31, seat block; 32, barrel seat; 321, sliding groove; 33, marking pen; 331, lever; 34, extension spring; 4, rotating shaft; 41, crank; 5, brace; 51, pressure head; 52, non-slip pad; 6, supporting sleeve; 61, pushing ring; 7, connecting rod; 8, twisting sleeve; 81, push part; 811, ring convex; 82, locking part. DETAILED DESCRIPTION

[0034] In order to make the person skilled in the art better understand the utility model, the utility model will be further described in conjunction with specific embodiments. It should be understood that the specific embodiments described herein are only used to illustrate and explain the utility model, and are not used to limit the utility model.

[0035] Embodiment:

[0036] As shown in Figures 1-6 , the utility model provides a kind of mark distance marking device for plastic pipe test, it includes seat 1 and the support 2 being vertically fixed and symmetrically arranged in the left and right sides of seat 1, specifically mark distance marking process, plastic pipe is horizontally fixed between the left and right sides of support 2, as shown in Figure 1 , it needs to be explained that, for easy to show and explain, plastic pipe is shown using perspective structure in drawing.

[0037] The bottom of seat 1 is provided with four interval distribution legs 14, and the leg 14 is movably connected with the seat 1 by stud, so as to adjust the height and levelness of the seat 1, to ensure that it is in horizontal state during marking.

[0038] As shown in Figure 1 and Figure 3 , the upper end surface of seat 1 is provided with two pen assemblies 3 which are connected perpendicularly and transversely arranged, to mark the circumference of plastic pipe fixed between the left and right supports 2. Among them, pen assembly 3 specifically includes seat block 31 connected with seat 1, barrel seat 32 vertically fixed on seat block 31, and marking pen 33 movably embedded in barrel seat 32, and extension spring 34 is fixedly arranged in barrel seat 32, and the top end of extension spring 34 abuts against the bottom end of marking pen 33, so that marking pen 33 is in contact with the outer wall of plastic pipe during mark distance marking process, and the marking operation is completed under the elastic force of extension spring 34, and the barrel seat 32 is provided with sliding groove 321 penetrating through the side wall and being "L" shape, and the marking pen 33 is provided with lever 331 movably embedded in sliding groove 321, so that the tip of marking pen 33 is separated from the contact with the outer wall of plastic pipe by pressing marking pen 33 downward through lever 331.

[0039] Further, as shown in Figure 1 ,Figure 3 , Figure 5 As shown, the base 1 is provided with two gauge grooves 11 arranged horizontally to the left and right, and a gauge screw 12 that can be rotatably inserted horizontally within the gauge grooves 11. A seat block 31 is reciprocally mounted within the gauge grooves 11 and is movably fitted around the outer circumference of the gauge screw 12 and threadedly connected to it. The threads of the gauge screw 12 within the two gauge grooves 11 have opposite directions of rotation, so that during the rotation of the gauge screw 12, the seat block 31 and the connected scribe 33 move closer together (distance decreases) or further apart (distance increases), thus meeting different gauge length requirements in different tests. For example, the longitudinal shrinkage rate test for plastic pipes requires a distance of 100mm between the two scribe lines. The upper surface of the base 1 is provided with gauge graduations 13 arranged parallel to and spaced apart from the gauge grooves 11, so as to clearly and directly determine the distance between the two scribes 33.

[0040] like Figure 1 and Figure 5 As shown, each of the left and right supports 2 is equipped with a horizontally arranged rotating shaft 4 that is movably connected to it, and the central axes of the left and right rotating shafts 4 coincide. At least one rotating shaft 4 has a crank handle 41 at its outer end. The inner end of the rotating shaft 4 is equipped with three support bars 5 that are movably hinged to it, and the hinge axis between the support bars 5 and the rotating shaft 4 is perpendicular to the axis of the rotating shaft 4. The three support bars 5 are evenly spaced around the axis of the rotating shaft 4 in the circumferential direction, and the ends of the three support bars 5 abut against the inner wall of the plastic pipe to support and fix the plastic pipe and make it rotate synchronously with the rotating shaft 4.

[0041] Further reference Figure 2 As shown, the rotating shaft 4 is also provided with a supporting sleeve 6 movably sleeved on its outer periphery, and a connecting rod 7 movably connected to the supporting sleeve 6. One end of the connecting rod 7 is movably hinged to the support bar 5, and the other end is movably hinged to the supporting sleeve 6. The hinge axes at both ends of the connecting rod 7 are parallel to the hinge axis between the support bar 5 and the rotating shaft 4. There are two connecting rods 7, symmetrically arranged on both sides of the support bar 5. Optionally, in some embodiments, the hinge axis between the connecting rod 7 and the support bar 5 is arranged away from the hinge axis between the support bar 5 and the rotating shaft 4 to improve the stability of the connecting rod 7 supporting the support bar 5, thereby improving the stability and reliability of the support for the inner wall of the plastic pipe.

[0042] Combination Figure 4 , Figure 5 , Figure 6As shown, the rotating shaft 4 is further provided with a rotating sleeve 8 movably sleeved on the outer periphery thereof, the rotating sleeve 8 is located at the end of the supporting sleeve 6 away from the supporting strip 5, the outer wall of the supporting sleeve 6 is provided with two push rings 61 arranged at intervals, the rotating sleeve 8 comprises a clamping and pushing part 81 and a locking part 82 connected with each other, the clamping and pushing part 81 is rotatably sleeved on the outer periphery of the supporting sleeve 6 and the inner wall thereof is provided with a ring protrusion 811, the ring protrusion 811 is rotatably embedded between the two push rings 61, the locking part 82 is sleeved on the outer periphery of the rotating shaft 4 and is threadedly connected with the rotating shaft 4, the rotating sleeve 8 can be moved along the axial direction of the rotating shaft 4 by manually rotating the rotating sleeve 8, the supporting sleeve 6 cannot follow the rotation and moves axially under the pushing action of the rotating sleeve 8, so that the supporting strip 5 is driven to be unfolded or folded up through the connecting rod 7.

[0043] Reference Figure 4 As shown, the locking part 82 of the rotating sleeve is threadedly connected with the rotating shaft 4, the rotating shaft 4 is provided with a threaded area with threads arranged on the outer periphery, the length of the threaded area corresponds to the axial running length of the rotating sleeve, and at the same time corresponds to the supporting degree of the supporting strip 5, that is, the included angle between the supporting strip 5 and the axis of the rotating shaft 4, and the adjustable included angle between the supporting strip 5 and the rotating shaft 4 is ideally located between 0 and 90 degrees, when the included angle between the supporting strip 5 and the axis of the rotating shaft 4 is 0 degrees, the supporting strip 5 is parallel to the axis of the rotating shaft 4, at this time, it corresponds to the smallest inner diameter of the plastic pipe that can be marked by the device, when the included angle between the supporting strip 5 and the axis of the rotating shaft 4 is 90 degrees (reference Figure 4 and Figure 5 ), the supporting strip 5 is perpendicular to the axis of the rotating shaft 4, at this time, it corresponds to the largest inner diameter of the plastic pipe that can be marked by the device, it should be noted that, in order to ensure the stability and reliability of the support and fixation, the inner diameter of the plastic pipe that can be marked by the device is selected between the two extreme values, for example, the included angle between the supporting strip 5 and the axis of the rotating shaft 4 is located between 30 degrees and 80 degrees (reference Figure 1 As shown), so as to ensure that the supporting strip 5 is closely supported against the inner wall of the plastic pipe.

[0044] Further, as shown in Figure 2 , the end of the supporting strip 5 is provided with a pressure head 51 movably connected therewith, the pressure head 51 is provided with a soft arc-shaped anti-skid pad 52 fixedly connected therewith, the outer side of the soft anti-skid pad 52 is provided with anti-skid lines or anti-skid protrusions, the soft anti-skid pad 52 is abutted against the inner wall of the plastic pipe, so as to ensure that the plastic pipe and the rotating shaft 4 rotate synchronously and do not slip.

[0045] In summary, the plastic pipe test marking and line marking device provided by the present application has the advantages of simple structure, convenient use, avoidance of deviation during the circumferential marking of the pipe body, guarantee of the accuracy and reliability of the marking data, and improvement of the marking efficiency.

[0046] The above are only preferred embodiments of the present application, and do not limit the patent range of the present application, and any equivalent changes and modifications made within the scope of the present application shall still fall within the scope of the present application.

Claims

1. A gauge marking device for testing plastic pipes, characterized in that: It includes a base (1) and supports (2) symmetrically arranged on the left and right sides of the base (1). The upper surface of the base (1) is provided with two pen components (3) that are vertically connected to it and arranged horizontally at intervals. The supports (2) on the left and right sides are provided with rotating shafts (4) that are movably connected to them and arranged horizontally. The rotating shafts (4) on the left and right sides are arranged coaxially. The inner end of the rotating shaft (4) is provided with three support bars (5) that are movably hinged to it, and the hinge axis between the support bar (5) and the rotating shaft (4) is perpendicular to the axis of the rotating shaft (4) in a different plane. The three support bars (5) are evenly distributed in the circumferential direction with the axis of the rotating shaft (4) as the center.

2. The gauge mark device for testing plastic pipes according to claim 1, characterized in that: The rotating shaft (4) is also provided with a support sleeve (6) that is movably sleeved on its outer periphery, and a connecting rod (7) that is movably connected to the support sleeve (6). One end of the connecting rod (7) is movably hinged to the support bar (5), and the other end is movably hinged to the support sleeve (6). The hinge axes at both ends of the connecting rod (7) are parallel to the hinge axis between the support bar (5) and the rotating shaft (4).

3. The gauge mark marking device for testing plastic pipes according to claim 2, characterized in that: The rotating shaft (4) is also provided with a screwing sleeve (8) that is movably sleeved on its outer periphery. The screwing sleeve (8) is located at the end of the supporting sleeve (6) away from the supporting bar (5). The screw sleeve (8) is threadedly connected to the rotating shaft (4).

4. The gauge mark marking device for testing plastic pipes according to claim 3, characterized in that: The outer wall of the support sleeve (6) is provided with two push rings (61) arranged at intervals. The screw sleeve (8) includes a push part (81) and a locking part (82) connected to each other. The push part (81) is sleeved on the outer periphery of the support sleeve (6) and its inner wall is provided with an annular protrusion (811). The annular protrusion (811) is rotatably embedded between the two push rings (61), and the locking part (82) is sleeved on the outer periphery of the rotating shaft (4) and is threadedly connected to the rotating shaft (4).

5. The gauge mark marking device for testing plastic pipes according to claim 1, characterized in that: The pen assembly (3) includes a base block (31) connected to the base (1), a cylinder seat (32) vertically fixed on the base block (31), and a pen (33) movably embedded in the cylinder seat (32). A telescopic spring (34) is fixedly installed inside the cylinder base (32), and the top end of the telescopic spring (34) abuts against the bottom end of the pen (33).

6. The gauge mark marking device for testing plastic pipes according to claim 5, characterized in that: The cylinder base (32) is provided with a sliding groove (321) that runs through its side wall and is in the shape of an "L". The pen (33) is provided with a lever (331) that is movably embedded in the sliding groove (321).

7. The gauge mark marking device for testing plastic pipes according to claim 5, characterized in that: The base (1) is provided with two gauge slots (11) arranged laterally, and a gauge screw (12) that can be rotatably inserted laterally in the gauge slots (11). The seat block (31) is reciprocating left and right and is embedded in the gauge groove (11). The seat block (31) is movably sleeved on the outer periphery of the gauge screw (12) and threadedly connected to it. The gauge screw (12) has opposite thread directions in the two gauge groove (11) areas.

8. The gauge mark marking device for testing plastic pipes according to claim 7, characterized in that: The upper surface of the base (1) is provided with gauge scales (13) arranged parallel to the gauge groove (11).

9. The gauge mark marking device for testing plastic pipes according to claim 1, characterized in that: The end of the support bar (5) is provided with a pressing head (51) that is movably hinged thereto, and the pressing head (51) is provided with an arc-shaped anti-slip pad (52) that is fixedly connected thereto. At least one side of the rotating shaft (4) has a crank handle (41) fixedly connected to its outer end.

10. The gauge mark marking device for testing plastic pipes according to claim 1, characterized in that: The base (1) has four spaced legs (14) at its bottom, and the legs (14) are movably connected to the base (1) by studs.

Images