Inner wall defect-eliminating chamfering machine for cast pipe

Abstract

The utility model discloses an inner wall defect eliminating chamfering machine for a cast pipe, which comprises a base, a translation trolley is arranged on the base, a telescopic rod is connected outside the translation trolley, a mounting frame is connected to the translation trolley and is inclined relative to the translation trolley, a chamfering mechanism is connected to the top of the mounting frame, one end of the mounting frame is rotatably connected with the translation trolley, and the other end of the mounting frame is rotatably connected with the telescopic rod. The other end of the mounting frame is connected with a driving chain, the end part of the driving chain extends to the outer side of the translation trolley and is connected with a balancing weight, the translation trolley is detachably connected with a limiting part, and the balancing weight is in a natural falling state and applies obliquely downward pulling force to the mounting frame through the driving chain; and the bottom of the mounting frame is attached to the upper end of the limiting part under the action of pulling force. The utility model has the characteristics that the working stability is good, and the telescopic rod is not easy to damage.

Description

Technical Field

[0001] The utility model relates to a cast pipe chamfering machine, in particular to an inner wall defect eliminating and chamfering machine for cast pipes. Background Art

[0002] During the processing of cast pipes, the inner hole ends of the cast pipes need to be chamfered by chamfering machines. The existing chamfering machines are mainly composed of a frame, a telescopic rod, a translation trolley and a chamfering mechanism. The translation trolley is placed on the frame and can move horizontally under the drive of the telescopic rod. The chamfering mechanism is installed on the translation trolley, so that the translation trolley contacts the cast pipe to achieve the chamfering function after it moves into place. When the chamfering mechanism is in the chamfering process, the telescopic rod applies a continuous thrust to the translation trolley to prevent the chamfering mechanism from vibrating and bouncing after being stressed.

[0003] However, the defect of the chamfering machine is that the method of using the telescopic rod to apply pressure to the translation trolley to make the chamfering mechanism close to the cast pipe will cause the telescopic rod to be continuously subjected to vibration and elastic force applied by the translation trolley during the chamfering process, which can easily cause force damage to the telescopic rod. On the other hand, since the chamfering mechanism contacts the cast pipe at an inclined angle to achieve the grinding function during processing, the reaction force received by the chamfering mechanism during chamfering is also set to be inclined upward, which increases the overall vibration amplitude of the translation trolley on the one hand, and the telescopic rod will also be subjected to vertical force on the other hand, further increasing the possibility of damage to the telescopic rod.

[0004] Therefore, the existing chamfering machines for cast pipes have the problems of poor working stability and easy damage of the telescopic rod. Utility Model Content

[0005] The utility model aims to provide an inner wall chamfering machine for a cast pipe, which has the characteristics of good working stability and a telescopic rod that is not easily damaged.

[0006] The technical solution of the utility model: an inner wall defect elimination and chamfering machine for cast pipes, comprising a base, a translation trolley is provided on the base, a telescopic rod is connected to the outside of the translation trolley, a mounting frame is connected to the translation trolley, the mounting frame is inclined relative to the translation trolley, a chamfering mechanism is connected to the top of the mounting frame, one end of the mounting frame is rotatably connected to the translation trolley, the other end of the mounting frame is connected to a driving chain, the end of the driving chain extends to the outside of the translation trolley and is connected to a counterweight, a limited portion is detachably connected to the translation trolley, the counterweight is in a naturally hanging state and applies an inclined downward pulling force to the mounting frame through the driving chain, so that the bottom of the mounting frame fits with the upper end of the limiting portion under the action of the pulling force.

[0007] In the aforementioned inner wall chamfering machine for cast pipes, the translation trolleys on both sides of the limiting part are connected with limiting rods, and the ends of the limiting rods pass through the mounting frame and are connected with compression springs. After contraction, the compression springs apply an inclined downward thrust to the mounting frame.

[0008] In the aforementioned inner wall chamfering machine for cast pipes, a plurality of guide sprockets are rotatably connected to the translation trolley, and the middle portion of the drive chain is guided by the plurality of guide sprockets and extends to the end of the base and is connected to a counterweight block.

[0009] In the aforementioned inner wall chamfering machine for cast pipes, the top of the base is connected with a linear slide rail, and the lower end of the translation trolley is slidably connected to the base via the linear slide rail.

[0010] In the aforementioned inner wall chamfering machine for cast pipes, the chamfering mechanism includes a rotating shaft rotatably connected to a mounting frame, one end of the rotating shaft is connected to a driving motor via a transmission mechanism, and the other end of the rotating shaft is connected to a grinding wheel with a frustum shape.

[0011] Compared with the prior art, the utility model has the following characteristics:

[0012] (1) The utility model uses the structural coordination of the translation trolley, the mounting frame, the limiting part and the driving chain, so that after the mounting frame is rotated and connected to the translation trolley, it can use the gravity of the counterweight block to fit the limiting part to achieve positioning; therefore, when the chamfering mechanism contacts the cast pipe and is subjected to the upward force from the cast pipe, the mounting frame can be forced to swing and bounce open and quickly reset under the action of the counterweight block, that is, the gravity of the counterweight block is used to achieve continuous pressure on the mounting frame and withstand the vibration and reaction force from the mounting frame, thereby effectively alleviating the force vibration and horizontal movement amplitude of the translation trolley, and thereby reducing the axial and vertical forces on the telescopic rod, thereby increasing the service life of the telescopic rod;

[0013] (2) Through the structural coordination of the limit rod and the compression spring, on the one hand, the mounting frame can be pressed and limited in rotation, so that the mounting frame will not be excessively rebounded after being subjected to the reaction force of the cast pipe; on the other hand, the compression spring can also play a vibration reduction function, thereby alleviating the force vibration of the mounting frame during the chamfering process and improving the working stability of the chamfering mechanism;

[0014] Therefore, the utility model has the characteristics of good working stability and the telescopic rod is not easy to be damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 yes Figure 1 A-axis enlarged view.

[0017] The markings in the attached drawings are: 1-base, 2-translation trolley, 3-telescopic rod, 4-mounting frame, 5-chamfering mechanism, 6-driving chain, 7-counterweight, 8-limiting part, 9-limiting rod, 10-compression spring, 11-guide sprocket, 12-linear slide rail, 13-rotating shaft, 14-driving motor, 15-grinding wheel. DETAILED DESCRIPTION

[0018] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0019] Embodiment. The inner wall chamfering machine for cast pipe is composed of Figure 1 As shown, it includes a base 1, on which is provided a translation trolley 2, the outside of which is connected to a telescopic rod 3, the translation trolley 2 is connected to a mounting frame 4, the mounting frame 4 is inclined relative to the translation trolley 2, the top of the mounting frame 4 is connected to a chamfering mechanism 5, one end of the mounting frame 4 is rotatably connected to the translation trolley 2, the other end of the mounting frame 4 is rotatably connected to a driving chain 6, the end of the driving chain 6 extends to the outside of the translation trolley 2 and is rotatably connected to a counterweight 7, the translation trolley 2 is detachably connected to a limiting portion 8, the counterweight 7 is in a naturally hanging state and applies an inclined downward pulling force to the mounting frame 4 through the driving chain 6, so that the bottom of the mounting frame 4 fits with the upper end of the limiting portion 8 under the action of the pulling force, and the top surface of the limiting portion 8 is paved with a rubber sheet, thereby preventing the collision noise generated by the mounting frame 4 during the swinging process.

[0020] The limiting rods 9 are rotatably connected to the translation trolleys 2 on both sides of the limiting part 8. The ends of the limiting rods 9 pass through the mounting frame 4 and are connected to compression springs 10. The compression springs 10 apply an oblique downward thrust to the mounting frame 4 after contraction. The mounting frame 4 is provided with a U-shaped opening for the limiting part 8 to pass through.

[0021] The translation trolley 2 is rotatably connected to a plurality of guide sprockets 11 , and the middle portion of the driving chain 6 is guided by the plurality of guide sprockets 11 and then extends to the end of the base 1 and is connected to the counterweight 7 .

[0022] The top of the base 1 is connected with a linear slide rail 12 , and the lower end of the translation trolley 2 is slidably connected to the base 1 via the linear slide rail 12 .

[0023] The chamfering mechanism 5 includes a rotating shaft 13 rotatably connected to the mounting frame 4 , one end of the rotating shaft 13 is connected to a driving motor 14 via a transmission mechanism, and the other end of the rotating shaft 13 is connected to a grinding wheel 15 in a frustum shape.

[0024] Working principle of the utility model: When the utility model is in use, the telescopic rod 3 drives the translation trolley 2 to move forward. When the telescopic rod 3 is fully pushed out, the translation trolley 2 reaches the chamfering position, and the grinding wheel 15 is driven by the driving motor 14 to rotate at a high speed and contact the inner wall of the end of the cast pipe to achieve the chamfering action. When the grinding wheel 15 is blocked by the cast pipe after contacting the cast pipe, it pops outward and vibrates, and the mounting frame 4 swings upward and separates from the limiting part 8.

[0025] When the mounting frame 4 swings and vibrates under force, the driving chain 6 will apply a downward traction force to the end of the mounting frame 4 under the gravity of the counterweight 7, so that the grinding wheel 15 can maintain continuous contact with the cast pipe under the action of the traction force and achieve the chamfering function. During the vibration process of the mounting frame 4, the compression spring 10 can also play a buffering effect on the mounting frame 4, thereby reducing the vibration amplitude and frequency of the mounting frame 4, and thereby improving the chamfering uniformity and chamfering effect of the grinding wheel 15 on the cast pipe.

[0026] When the chamfering is completed, the mounting frame 4 is completely fitted with the limiting portion 8, thereby preventing excessive grinding of the cast pipe. Then the telescopic rod 3 overcomes the gravity of the counterweight block 7 and drives the translation trolley 2 to separate from the cast pipe, completing the chamfering of the cast pipe.

Claims

1. The inner wall chamfering machine for cast pipes is characterized by: The invention comprises a base (1), a translation trolley (2) is provided on the base (1), a telescopic rod (3) is connected to the outside of the translation trolley (2), a mounting frame (4) is connected to the translation trolley (2), the mounting frame (4) is inclined relative to the translation trolley (2), a chamfering mechanism (5) is connected to the top of the mounting frame (4), one end of the mounting frame (4) is rotatably connected to the translation trolley (2), the other end of the mounting frame (4) is connected to a driving chain (6), the end of the driving chain (6) extends to the outside of the translation trolley (2) and is connected to a counterweight (7), a limiting portion (8) is detachably connected to the translation trolley (2), the counterweight (7) is in a naturally hanging state and applies an inclined downward pulling force to the mounting frame (4) through the driving chain (6), so that the bottom of the mounting frame (4) fits with the upper end of the limiting portion (8) under the action of the pulling force.

2. The inner wall chamfering machine for cast pipe according to claim 1, characterized in that: The translation trolleys (2) on both sides of the limiting portion (8) are connected to limiting rods (9), the ends of the limiting rods (9) pass through the mounting frame (4) and are connected to compression springs (10), and the compression springs (10) exert an oblique downward thrust on the mounting frame (4) after contraction.

3. The inner wall chamfering machine for cast pipe according to claim 1, characterized in that: The translation trolley (2) is rotatably connected to a plurality of guide sprockets (11); the middle portion of the drive chain (6) is guided by the plurality of guide sprockets (11) and extends to the end of the base (1) and is connected to a counterweight (7).

4. The inner wall chamfering machine for cast pipe according to claim 1, characterized in that: The top of the base (1) is connected to a linear slide rail (12), and the lower end of the translation trolley (2) is slidably connected to the base (1) via the linear slide rail (12).

5. The inner wall chamfering machine for cast pipe according to claim 1, characterized in that: The chamfering mechanism (5) comprises a rotating shaft (13) rotatably connected to a mounting frame (4); one end of the rotating shaft (13) is connected to a driving motor (14) via a transmission mechanism; and the other end of the rotating shaft (13) is connected to a grinding wheel (15) in the shape of a truncated cone.

Images