Cutting device for dumbbell-shaped sample of rigid polyvinyl chloride pipe

Abstract

The utility model discloses a dumbbell-shaped sample cutting device for a rigid polyvinyl chloride pipe. The dumbbell-shaped sample cutting device for the rigid polyvinyl chloride pipe further comprises a driving motor. A driving motor is horizontally fixed on the bottom surface in the sample preparation box body, and an output shaft of the driving motor is in coaxial transmission connection with the driving wheel; a supporting plate is fixed to the top face of the synchronous belt, the clamp is fixed to the top face of the sample preparation box through a penetrating screw, a base plate is arranged along the dovetail groove in a sliding mode, a driving motor is fixed to the base plate, and a cutter handle of the rotary cutter head penetrates through the guide through groove and is in coaxial transmission connection with an output shaft of the driving motor. The sample preparation device has the advantages that the driving motor drives the base plate to do linear reciprocating motion along the guide dovetail groove, meanwhile, the rotary tool bit cuts a sample along one side of the dumbbell-shaped clamp, after cutting is finished, the clamp is detached from the sample preparation box body and turned by 180 degrees, and the rotary tool bit is driven to cut the sample along the other side of the dumbbell-shaped clamp, so that sample preparation is completed; the whole process does not need to manually hold the clamp for cutting, the labor intensity is low, and the efficiency is high.

Description

Technical field:

[0001] The utility model relates to the technical field of pipe sample making equipment, in particular to a dumbbell-shaped sample cutting device for rigid polyvinyl chloride pipes. Background technology:

[0002] Rigid polyvinyl chloride pipes are an indispensable material for drainage projects. Whether their physical and mechanical properties are qualified is a very important indicator for pipes, among which tensile yield stress and elongation at break are particularly important.

[0003] Before conducting the above-mentioned performance test, it is necessary to make samples first, that is, first cut the pipe into 3 to 5 small rectangular samples. For pipes with an outer diameter greater than 75 mm, 5 pieces need to be cut, and for pipes with an outer diameter less than 75 mm, 3 pieces need to be cut. The size of each rectangular sample is 12 cm long and 2.5 cm wide; then the rectangular sample is clamped on a dumbbell-shaped fixture, the fixture is held manually, and the sample is cut using a rotating cutter head on the sample making machine to produce a dumbbell-shaped sample.

[0004] Currently, when using the existing sample making machine for cutting, the rotating cutter head of the sample making machine is stationary, and a manual gripper is held close to the rotating cutter head and moved along a dumbbell-shaped path. When making a large number of samples, the entire cutting process is not only labor-intensive and inefficient, but also prone to human errors. Utility model content:

[0005] The purpose of the utility model is to provide a device for cutting dumbbell-shaped samples of rigid polyvinyl chloride pipes, which is conducive to reducing labor intensity and human errors.

[0006] The utility model is implemented by the following technical solutions: a device for cutting dumbbell-shaped specimens of rigid polyvinyl chloride pipes, comprising a sample preparation box, a fixture, a rotary cutter head and a drive motor; characterized in that it also comprises a driving motor, a synchronous belt, a driving wheel and a driven wheel; two supporting plates arranged opposite to each other are fixed on the bottom surface of the sample preparation box, two connecting plates arranged opposite to each other are fixed between the two supporting plates, the driving wheel and the driven wheel are provided for corresponding rotation between the two ends of the two connecting plates, and the driving wheel is connected to the driven wheel through a synchronous belt; the driving motor is fixed horizontally on the bottom surface of the sample preparation box, and the output shaft of the driving motor is connected to the driving motor. The driving wheel is coaxially connected; a support plate is fixed on the top surface of the synchronous belt, and two guide rods are symmetrically passed through the two ends of the support plate, and the two ends of each guide rod are fixedly connected to the corresponding support plate; the clamp is fixed to the top surface of the sample preparation box by passing screws, and a guide groove matching the shape of one side of the clamp is provided on the top of the sample preparation box adjacent to the clamp; a guide dovetail groove parallel to the output shaft of the active motor is provided on the top surface of the support plate, and a base plate is provided for sliding along the dovetail groove, and the driving motor is fixed on the base plate, and the tool handle of the rotating cutter head passes through the guide groove and is coaxially connected to the output shaft of the driving motor.

[0007] Furthermore, the fixture includes a dumbbell-shaped base plate and a pressure plate, and positioning pins and connecting screws are inserted between the two ends of the base plate and the pressure plate.

[0008] The advantages of the present invention are as follows: the active motor drives the synchronous belt and the support plate to make linear reciprocating movements, while the support plate drives the driving motor on the base plate to move. The rotating cutter head is guided by the limit of the guide slot, and the driving motor drives the base plate to make linear reciprocating movements along the guide dovetail groove. During this process, under the guidance of the guide slot, the rotating cutter head cuts the sample along one side of the dumbbell-shaped fixture. After cutting, the fixture is removed from the sample preparation box, turned 180 degrees, so that the other side of the fixture faces the rotating cutter head and then fixed on the sample preparation box. According to the above operation method, the rotating cutter head is driven to cut the sample along the other side of the dumbbell-shaped fixture to complete the preparation of the sample. The whole process does not require manual holding of the fixture for cutting, the labor intensity is low, the efficiency is high, and it is conducive to reducing human errors. Description of the drawings:

[0009] Figure 1 It is a structural diagram of the present utility model.

[0010] Figure 2 for Figure 1 Top view of .

[0011] Figure 3 for Figure 1 A-direction view.

[0012] The components in the accompanying drawings are marked as follows: sample preparation box 1, clamp 2, bottom plate 2.1, pressure plate 2.2, rotary cutter head 3, drive motor 4, active motor 5, synchronous belt 6, active pulley 7, driven pulley 8, support plate 9, connecting plate 10, support plate 11, guide rod 12, guide through groove 13, guide dovetail groove 14, base plate 15, positioning pin 16, connecting screw 17, sample 18. Specific implementation method:

[0013] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0014] In the description of the present invention, it should be noted that the terms "center", "up", "down", "front", "back", "top", "bottom", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship 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 cannot be understood as a limitation on the present invention.

[0015] like Figures 1 to 3 As shown, this embodiment provides a dumbbell-shaped specimen cutting device for rigid polyvinyl chloride pipes, which includes a sample preparation box 1, a fixture 2, a rotary cutter head 3 and a drive motor 4; the fixture 2 includes a dumbbell-shaped bottom plate 2.1 and a pressure plate 2.2, and positioning pins 16 and connecting screws 17 are inserted between the two ends of the bottom plate 2.1 and the pressure plate 2.2. After the rectangular sample 18 is placed on the bottom plate 2.1, the corresponding positions of the pressure plate 2.2 and the bottom plate 2.1 are defined by the positioning pins 16, and then the pressure plate 2.2 is pressed against the sample 18 on the bottom plate 2.1 by the connecting screws 17 to clamp the sample 18. The fixture 2 is fixed to the top surface of the sample preparation box 1 as a whole by inserting screws.

[0016] It also includes a driving motor 5, a synchronous belt 6, a driving wheel 7 and a driven wheel 8; two oppositely arranged support plates 9 are fixed on the bottom surface of the sample preparation box 1, and two oppositely arranged connecting plates 10 are fixed between the two support plates 9. A driving wheel 7 and a driven wheel 8 are provided for corresponding rotation between the two ends of the two connecting plates 10. The driving wheel 7 is connected to the driven wheel 8 through a synchronous belt 6, and the synchronous belt 6 is arranged parallel to the bottom plate 2.1; a driving motor 5 is fixed horizontally on the bottom surface of the sample preparation box 1, and the output shaft of the driving motor 5 is coaxially connected to the driving wheel 7; the driving motor 5 drives the driving wheel 7 to rotate, and the driving wheel 7 drives the synchronous belt 6 and the driven wheel 8 to run synchronously.

[0017] A support plate 11 is fixed to the top surface of the synchronous belt 6, and two guide rods 12 are symmetrically provided at both ends of the support plate 11. The two ends of each guide rod 12 are fixedly connected to the corresponding support plate 9, and the guide rod 12 is arranged perpendicularly relative to the output shaft of the active motor 5; by controlling the forward and reverse rotation of the active motor 5, the synchronous belt 6 can drive the support plate 11 to realize linear reciprocating movement.

[0018] A guide groove 13 matching the shape of one side of the clamp 2 is provided on the top of the sample preparation box 1 adjacent to the clamp 2; a guide dovetail groove 14 parallel to the output shaft of the active motor 5 is provided on the top surface of the support plate 11, and a base plate 15 is provided sliding along the dovetail groove, on which the drive motor 4 is fixed. The handle of the rotary cutter head 3 passes through the guide groove 13 and is coaxially connected to the output shaft of the drive motor 4. The drive motor 4 drives the rotary cutter head 3 to rotate for cutting the sample 18.

[0019] When the active motor 5 drives the synchronous belt 6 and the support plate 11 to make a straight reciprocating movement, the support plate 11 drives the driving motor 4 on the base plate 15 to move. Under the limit guidance of the guide groove 13, the driving motor 4 drives the base plate 15 to make a straight reciprocating movement along the guide dovetail groove 14. During this process, under the guidance of the guide groove 13, the rotary cutter head 3 cuts the sample 18 along one side of the dumbbell-shaped fixture 2. After the cutting is completed, the fixture 2 is removed from the sample preparation box 1, turned 180 degrees, so that the other side of the fixture 2 faces the rotary cutter head 3 and the fixture 2 is fixed on the sample preparation box 1. According to the above operation method, the rotary cutter head 3 is driven to cut the sample 18 along the other side of the dumbbell-shaped fixture 2, thereby completing the preparation of the sample; the entire process does not require manual holding of the fixture 2 for cutting, the labor intensity is low, the efficiency is high, and it is conducive to reducing human errors.

[0020] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A dumbbell-shaped specimen cutting device for rigid polyvinyl chloride pipes, comprising a sample preparation box, a fixture, a rotary cutter head, and a drive motor; characterized in that: It also includes a driving motor, a synchronous belt, a driving wheel and a driven wheel; two supporting plates arranged opposite to each other are fixed on the bottom surface of the sample preparation box body, two connecting plates arranged opposite to each other are fixed between the two supporting plates, and the driving wheel and the driven wheel are correspondingly rotated between the two ends of the two connecting plates, and the driving wheel is connected to the driven wheel through a synchronous belt; The active motor is horizontally fixed on the bottom surface of the sample preparation box, and the output shaft of the active motor is coaxially connected to the active wheel; a support plate is fixed on the top surface of the synchronous belt, and two guide rods are symmetrically provided at both ends of the support plate, and the two ends of each guide rod are fixedly connected to the corresponding support plate; The clamp is fixed to the top surface of the sample preparation box by inserting screws, and a guide groove matching the shape of one side of the clamp is provided on the top of the sample preparation box adjacent to the clamp; a guide dovetail groove parallel to the output shaft of the active motor is provided on the top surface of the support plate, and a base plate is provided sliding along the dovetail groove, the drive motor is fixed on the base plate, and the handle of the rotary cutter head passes through the guide groove and is coaxially connected to the output shaft of the drive motor.

2. The dumbbell-shaped sample cutting device for rigid polyvinyl chloride pipes according to claim 1, characterized in that: The clamp comprises a dumbbell-shaped bottom plate and a pressing plate, and positioning pins and connecting screws are inserted between the two ends of the bottom plate and the pressing plate.

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