Copper pipe flattening tool for stretching experiment
Technical Field
The utility model relates to a tool for flattening two ends of a sample copper pipe between stretching experiments.
Background
The precise copper pipe is commonly used for refrigerating or heating pipelines, can be used in different environments, is most widely applied in the field of white household appliances, and is one of the best connecting pipelines in a condenser of an air conditioner.
To test the performance of copper tubes, a tensile test is required for the copper tubes. Because the equipment clamp for carrying out the stretching experiment can not directly clamp the copper pipe, two ends of the sample copper pipe are required to be flattened before the experiment is carried out, so that the friction force at two ends of the sample copper pipe is improved, and the influence on the experimental result due to looseness in the experimental process is avoided. The existing flattening mode is to manually knock the sample copper pipe, so that consistency is difficult to ensure, and labor intensity of operators is high.
Disclosure of utility model
In view of the above, the utility model provides a copper pipe flattening tool for a stretching experiment, which is used for flattening two ends of a sample copper pipe rapidly and conveniently, so that the sample copper pipe meets the experiment requirement.
The technical scheme includes that the copper tube flattening tool for the stretching experiment comprises a frame, a sample clamping mechanism and a pressing mechanism, wherein the sample clamping mechanism and the pressing mechanism are arranged on the frame, the sample clamping mechanism comprises a left clamping table and a right clamping table, the clamping tables are arranged on a rail I and can slide along the rail I so that the two clamping tables can move relatively or separately, baffles acting on the end parts of the sample copper tube are arranged on the two clamping tables and are used for clamping and fixing the sample copper tube, the pressing mechanism is located right above the sample clamping mechanism and comprises a pressing plate, the pressing plate is provided with a rail II, the rail II is provided with a left pressing block and a right pressing block which can move along the rail II, the rail I and the rail II are arranged in parallel so that the pressing blocks are opposite to the clamping tables, and the pressing mechanism is used for driving the pressing plate to press downwards.
The clamping table is characterized in that the top surface of the clamping table is a working plane for placing the copper pipe, the length of the working plane is consistent with the length of the sample copper pipe to be flattened, the bottom surface of the pressing block is a working plane matched with the top surface of the clamping table for pressing, and the length of the pressing block is consistent with the length of the sample copper pipe to be flattened.
As an improvement, a supporting table is arranged between the two clamping tables, and the height of the supporting table is adjustable.
As a further improvement, the rack comprises a bottom plate and a bottom plate, wherein the bottom plate and the top plate are connected through upright posts, the sample clamping mechanism is arranged on the bottom plate, and the pressing mechanism is arranged on the top plate.
As another further improvement, the actuating mechanism is a cylinder, the cylinder is fixed above the top plate, and a piston rod of the cylinder penetrates through the top plate and is connected with the pressing plate.
As an improvement, guide posts penetrating through the top plate are arranged on the pressing plate.
The control device is characterized by further comprising a start button used for controlling the operation of the executing mechanism, wherein the start button is pressed and is provided with a left start button and a right start button, and the executing mechanism operates when the two start buttons are pressed simultaneously.
As an improvement, the pressing block is provided with an adjusting bolt and is fixed on the track II by the adjusting bolt, and the clamping table is provided with the adjusting bolt and is fixed on the track I by the adjusting bolt.
As an improvement, the actuating mechanism is provided with a pressure gauge for detecting the pressing force.
The utility model has the advantages that:
The copper pipe flattening tool with the structure clamps the sample copper pipe by using the left clamping platform and the right clamping platform, so that the stability on the sample copper pipe is ensured. The principle is that the baffles on the left clamping table and the right clamping table act on the two ends of the sample copper pipe to enable the sample copper pipe to be abutted. Two pressing blocks which are matched with the clamping table are arranged right above the clamping table, the pressing blocks are driven by the actuating mechanism to move downwards, so that the part of the sample copper pipe arranged on the clamping table is flattened, and a rough plane is formed, so that the clamping of the clamp of the tensile testing machine is facilitated. The pressing force, direction and position of the pressing machine are consistent, the consistency of experiments is ensured, and the accuracy of experimental results is improved.
The top surface of the clamping table is a working plane for placing the copper pipe, the length of the working plane is consistent with the length of the sample copper pipe to be flattened, the bottom surface of the pressing block is a working plane matched with the top surface of the clamping table for pressing, and the length of the pressing block is consistent with the length of the sample copper pipe to be flattened. The length consistency of the flattened parts of the sample copper tubes is ensured, so that the flattened parts of each sample copper tube have the same length.
The setting of brace table is used for supporting the middle part of sample copper pipe, avoids taking place deformation bending in the suppression, influences experimental result.
In order to improve the use safety, the utility model further comprises a start button for controlling the operation of the executing mechanism, wherein the start button is of a push type and is provided with a left start button and a right start button, and the executing mechanism operates when the two start buttons are simultaneously pressed. The left hand and the right hand of an operator press the two starting buttons simultaneously to trigger the action of the actuating mechanism, so that the hands of the operator are prevented from being placed on a pressing path during pressing, and safety accidents are avoided.
Drawings
Fig. 1 is a schematic view of a pressed sample copper tube.
Fig. 2 is a front view of the present utility model.
In the figure, the device comprises a frame 1, an air cylinder 2, a pressure gauge 3, a pressure plate 4, a rail II 5, a pressing block 6, an adjusting bolt 7, a rail I8, a clamping table 9, an adjusting bolt 10, a baffle 11, a supporting table 12, a guide column 13 and a starting button 14.
Detailed Description
In order to make the technical scheme of the present utility model better understood by those skilled in the art, the present utility model will be further described in detail with reference to the following specific embodiments.
Chinese patent application CN202111224671.2 discloses an intelligent air-conditioning copper pipe production flatting mill, pull rod and slide frame and slide bar are connected with pull rod rotation, and with clamp plate sliding connection, first buffer spring and slide bar fixed connection, slider and slide frame sliding connection, second buffer spring and slider and mould fixed connection, gasbag and clamp plate and buffer plate fixed connection, heating plate and mould fixed connection, when the press flattens the copper pipe, the clamp plate moves down the pull rod and pulls the slide bar to slide to the slide frame both sides, the slide bar slides and stretches first buffer spring and carries out preliminary buffering to the pressure of clamp plate, simultaneously the clamp plate moves down and pushes down the slider, make the slider slide to be close to mould one side on the slide frame, the slider slides and extrudes the pressure secondary buffering of second buffer spring counter-pressure board, prevent that the clamp plate pressure is too big with the copper pipe fracturing, solve current flatting mill pressure too big easily to make the copper pipe split, influence production efficiency's problem.
The prior art mentioned above is actually aimed at flattening the copper tube in the production process, but not aimed at the tensile test, so that it cannot flatten both ends at the same time, and the structure is relatively complex.
The utility model provides a copper pipe flattening tool for a stretching experiment, which is shown in fig. 2 and comprises a frame 1, a sample clamping mechanism and a pressing mechanism, wherein the sample clamping mechanism and the pressing mechanism are arranged on the frame 1, the sample clamping mechanism comprises a left clamping table 9 and a right clamping table 9, the clamping tables 9 are arranged on a track I8 and can slide along the track I8 so that the two clamping tables 9 can move relatively or relatively away from each other, baffles 11 acting on the end parts of a sample copper pipe are arranged on the two clamping tables 9 and are used for clamping and fixing the sample copper pipe, the pressing mechanism is arranged right above the sample clamping mechanism and comprises a pressing plate 4, a track II5 is arranged on the pressing plate 4, a left pressing block 6 and a right pressing block 6 which can move along the track II5 are arranged on the track II5, the track I8 and the track II5 are arranged in parallel so that the pressing blocks 6 are opposite to the positions of the clamping tables 9, and an executing mechanism used for driving the pressing plate 4 to press down.
The utility model clamps the sample copper pipe by using the left clamping table 9 and the right clamping table 9, thereby ensuring the stability on the sample copper pipe. The principle is that the baffles 10 on the left clamping table 9 and the right clamping table 9 act on the two ends of the sample copper pipe to tightly prop against the two ends of the sample copper pipe. Two pressing blocks 6 which are matched with the clamping table 9 are arranged right above the clamping table 9, the pressing blocks 6 are driven by an actuating mechanism to move downwards, so that the part of the sample copper pipe arranged on the clamping table 9 is flattened, and a rough plane is formed, so that the clamping of a clamp of the tensile testing machine is facilitated. The pressing force, direction and position of the pressing machine are consistent, the consistency of experiments is ensured, and the accuracy of experimental results is improved.
It is foreseen that the positions of the press block 6 and the clamping table 9 need to be fixed when clamping is performed again, and that the press block 6 and the clamping table 9 need to slide on the rail II5 or the rail I8 when the sample pipe is disassembled and the position is adjusted. In this embodiment, therefore, the pressure block 6 is provided with an adjusting bolt 7 and is fixed to the rail II5 by the adjusting bolt 7, and the clamping table 9 is provided with an adjusting bolt 10 and is fixed to the rail I8 by the adjusting bolt 10. Of course, the means for achieving the above object are numerous, and the adjusting bolt in the present embodiment is only one option provided, and is not intended to limit the scope of the present utility model.
In this embodiment, the top surface of the clamping table 9 is a working plane for placing the copper tube, the length of the working plane is consistent with the length of the sample copper tube to be flattened, and the bottom surface of the pressing block 6 is a working plane matched with the top surface of the clamping table 9 for pressing, and the length of the working plane is consistent with the length of the sample copper tube to be flattened. The length consistency of the flattened parts of the sample copper tubes is ensured by the lengths of the working planes of the clamping table 9 and the pressing block 6, so that the flattened parts of each sample copper tube have the same length. Compared with the traditional flat end formed by manual knocking, the consistency of the flat end is greatly improved, and experimental result deviation caused by the deviation of the length of the flat end is avoided.
In addition, a supporting table 12 is arranged between the two clamping tables 9, and the height of the supporting table 12 is adjustable. If the middle part of the sample copper pipe is suspended during pressing, the pressed sample copper pipe can be bent to a certain extent, and the experimental result can be influenced. Therefore, the supporting table is arranged in the embodiment to support the middle part of the sample copper pipe during pressing. In addition, the height of the support table 12 is adjustable to accommodate copper tubes of different diameters.
The shape of the briquette 6 may be preferably rectangular parallelepiped, and the edge portion may be chamfered in order to avoid damage to the copper pipe by the edge portion.
The frame 1 in the embodiment comprises a bottom plate and a bottom plate, wherein the bottom plate and the top plate are connected through upright posts, the sample clamping mechanism is arranged on the bottom plate, and the pressing mechanism is arranged on the top plate. Specifically, the actuating mechanism is a cylinder, the cylinder is fixed above the top plate, and a piston rod of the cylinder penetrates through the top plate and is connected with the pressing plate. Of course, other linear driving mechanisms, such as an oil cylinder, may be used as the actuating mechanism, and the utility model is not limited thereto, as long as the pressing plate can be driven to perform pressing operation.
Further, in order to ensure that the pressing plate 4 does not deviate during the pressing down process, a guide post 13 penetrating through the top plate is arranged on the pressing plate 4. The number of the guide posts 13 can be two, namely left and right, and the movement track of the pressing plate 4 is ensured through the guide of the guide posts 13.
For safety of operation, the device also comprises an actuating button 14 for controlling the operation of the actuating mechanism in some embodiments, wherein the actuating button 14 is pressed and provided with a left actuating button and a right actuating button, and the actuating mechanism operates when the two actuating buttons 14 are pressed simultaneously. Because the pressure is higher when pressing the clamp plate 4 to the speed is also faster, in order to avoid the operator's accidental injury because of the mistake touches, through the setting of controlling two start button 14, make two hands about the operator press two start button 14 simultaneously, just can trigger actuating mechanism's action, ensured that the operator's hand can not place on the suppression route when pressing, thereby avoided the emergence of incident.
In addition, in this example, since the sample copper tube has different wall thickness, diameter, etc., the pressure at which it needs to be pressed varies. Therefore, the actuating mechanism is provided with the pressure gauge 3 for detecting the downward pressure, and the machine is stopped when the pressure reaches a preset value.
When the clamping device works, the positions of the clamping tables 9 are adjusted according to the lengths of the sample copper tubes, and then the two clamping tables 9 are close to each other to enable the baffle plates 11 on the clamping tables 9 to tightly abut against the two ends of the sample copper tubes to finish clamping. The positions of the press blocks 6 are adjusted so that the positions of the two press blocks 6 are located right above the clamping table 9. The left and right hands of the operator respectively press the two start buttons 14 at the same time, and the pressing plate 4 is driven to press by the executing mechanism, so that the pressing work is completed.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that the above-mentioned preferred embodiment should not be construed as limiting the utility model, and the scope of the utility model should be defined by the appended claims. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the spirit and scope of the utility model, and such modifications and adaptations are intended to be comprehended within the scope of the utility model.