A chamfering device after end sealing

Abstract

The invention discloses a chamfering device after end sealing, comprising a pipe supporting mechanism, a chamfering mechanism, a rotating mechanism, an advancing and retreating mechanism and a platform, the chamfering mechanism comprising a cutter disc and a chamfering knife group, the chamfering knife group having more than one, the chamfering knife group consisting of a first chamfering knife and a second chamfering knife, the first chamfering knife and the second chamfering knife are both mounted on one end face of the cutter disc, and the blades of the first chamfering knife and the second chamfering knife are in a straight line shape, the angles between the blades of the first chamfering knife and the second chamfering knife and the cutter disc are both 45°, the minimum distance between the blades of the first chamfering knife and the second chamfering knife matches the wall thickness of the steel-plastic composite pipe, the rotating mechanism is connected to the cutter disc, the advancing and retreating mechanism is connected to the rotating mechanism, and the pipe supporting mechanism and the advancing and retreating mechanism are both mounted on the platform. The device has a simple structure and can conveniently and quickly chamfer the end face of the pipe.

Description

Technical Field

[0001] The invention belongs to the technical field of steel-plastic composite pipe end-sealing equipment, and in particular relates to a chamfering device after end-sealing. Background Art

[0002] Steel-plastic composite pipe is a new composite pipe material, and there are many categories of steel-plastic composite pipe. The most popular one on the market is the steel-belt reinforced steel-plastic composite pipe. The middle layer of this pipe is a steel belt layer made by curling and butt welding of high-carbon steel belts, and the inner and outer layers are both high-density polyethylene. The middle layer of this pipe is a steel belt. After the product is produced, the end face will have exposed steel belts, which will rust during storage, causing product appearance and quality problems.

[0003] The current practice on the market is to heat-seal a polyethylene ring on the end surface to prevent the steel belt from contacting the air.

[0004] The existing end sealing method has a high degree of automation. It uses a large heating plate to heat the die head, affixes the end sealing ring to the die head, and uses a cylinder to apply pressure along the axial direction of the pipe to connect the end sealing ring after hot melt softening to the pipe. This method does not use a rubber airbag, and the pipe will not turn yellow in the later stage, but the end sealing ring will overflow along the radial direction of the pipe under pressure, affecting the appearance and use, and the pipe end face needs to be chamfered. Summary of the invention

[0005] In order to solve the problems existing in the above-mentioned prior art, the present invention provides a device for chamfering after end sealing. The device has a simple structure and can conveniently and quickly chamfer the end surface of the pipe.

[0006] The technical solution adopted to achieve the above-mentioned purpose of the present invention is:

[0007] A chamfering device after end sealing, comprising a pipe supporting mechanism, a chamfering mechanism, a rotating mechanism, an advancing and retreating mechanism and a platform;

[0008] The chamfering mechanism comprises a cutter disc and a chamfering knife group, there is more than one chamfering knife group, the chamfering knife group consists of a first chamfering knife and a second chamfering knife, the first chamfering knife and the second chamfering knife are both installed on one end surface of the cutter disc, and the blades of the first chamfering knife and the second chamfering knife are in a straight line shape, the angles between the blades of the first chamfering knife and the second chamfering knife and the cutter disc are both 45°, the blades of the first chamfering knife and the second chamfering knife are perpendicular to each other, the minimum distance between the blades of the first chamfering knife and the second chamfering knife matches the wall thickness of the steel-plastic composite pipe, if there are more than two chamfering knife groups, the blades of all the first chamfering knives are located on the inner wall of the same circular ring, the blades of all the second chamfering knives are located on the outer wall of the same circular ring, and the circular ring is coaxial with the cutter disc, and the cross section of the circular ring is an isosceles trapezoid;

[0009] The rotating mechanism is connected to the cutter disc, and the rotating mechanism drives the cutter disc to rotate;

[0010] The advance and retreat mechanism is connected to the rotating mechanism, and the advance and retreat mechanism drives the rotating mechanism to reciprocate along the axial direction of the steel-plastic composite pipe;

[0011] The pipe supporting mechanism and the advancing and retreating mechanism are both installed on the platform.

[0012] The chamfering mechanism also includes a limit piece, and the number of the limit pieces and the chamfering tool set is the same. The limit piece is in a fan-shaped ring shape, and a connecting ring is provided in the center of one end face of the cutter disc. One end face of the limit piece in a fan-shaped ring shape is fixed to the cutter disc. The arcuate side wall with a smaller diameter of each limit piece is fitted and connected with the outer side wall of the connecting ring. Each limit piece is provided with a fan-shaped first groove, and all the first grooves are on the same circular ring coaxial with the cutter disc. Each limit piece is divided into an inner limit block and an outer limit block by the first groove. The inner limit block is provided with a first knife groove on the outer arcuate side wall, and the outer limit block is provided with a second knife groove on the inner arcuate side wall. A knife groove and a second knife groove are directly opposite to each other. If there is only one limiting member and chamfering knife group, the first chamfering knife is installed in the first knife groove, the second chamfering knife is installed in the second knife groove, and the minimum distance between the blades of the first chamfering knife and the second chamfering knife is smaller than the distance between the first grooves. If there are more than two limiting members and chamfering knife groups, the first chamfering knife of each chamfering knife group is installed in the first knife groove on the corresponding limiting member, the second chamfering knife of each chamfering knife group is installed in the second knife groove on the corresponding limiting member, and the minimum distance between the blades of the first chamfering knife and the second chamfering knife of each chamfering knife group is smaller than the width of the first groove.

[0013] The cutter disc is provided with an annular second groove, the second groove is coaxial with the cutter disc, the inner diameter of the first groove is the same as the inner diameter of the second groove, the outer diameter of the first groove is the same as the outer diameter of the second groove, and each first groove is connected to the second groove.

[0014] The rotating mechanism comprises a motor, a reducer and a mounting plate, the reducer is mounted on the mounting plate, the output shaft of the motor is connected to the input end of the reducer, the cutter disc is sleeved on the output shaft of the reducer, and the mounting plate is connected to the advance and retreat mechanism.

[0015] The advance and retreat mechanism includes a sliding mechanism and a driving mechanism. The sliding mechanism includes a slide rail and a slider. There are two slide rails and four sliders. The two slide rails are symmetrically installed on the platform. The two slide rails are parallel to the axial direction of the steel-plastic composite pipe. Two sliders are installed on one of the slide rails, and the other two sliders are installed on the other slide rail. The four sliders are respectively located below the mounting plate. Two symmetrical positions on the mounting plate are respectively connected to the slide rails through the sliders, and the driving mechanism is fixedly connected to the mounting plate.

[0016] The sliding mechanism further comprises four stop blocks, wherein two stop blocks are respectively located at two ends of one of the slide rails, and the other two stop blocks are respectively located at two ends of the other slide rail.

[0017] The driving mechanism includes a screw rod, a screw rod support seat, a screw rod nut and a nut seat. There are two screw rod support seats, which are respectively installed on the platform. The two ends of the screw rod are respectively fixed on the two screw rod support seats. The screw rod is located on the outside of one of the slide rails. The screw rod is parallel to the two slide rails. The screw rod nut is sleeved on the screw rod, and the screw rod nut is installed on the nut seat. The nut seat is connected to the mounting plate.

[0018] The driving mechanism also includes a handwheel, a transmission shaft, a shaft seat, a first spur bevel gear and a second spur bevel gear. The shaft seat is installed on the platform, the transmission shaft is installed on the shaft seat, the handwheel is sleeved on one end of the transmission shaft, the first spur bevel gear is sleeved on the other end of the transmission shaft, the second spur bevel gear is sleeved on the other end of the screw rod, and the first spur bevel gear is meshed with the second spur bevel gear.

[0019] The pipe support mechanism includes a support seat, a connecting rod and a clamp. There are multiple support seats, each of which is fixed on the platform. Each support seat is provided with a semicircular slot. Adjacent support seats are connected by a connecting rod. There are multiple clamps, each of which is semicircular. One end of each clamp is hinged to one side of the corresponding slot, and the other end of each clamp is fixed to the other side of the slot.

[0020] Compared with the prior art, the beneficial effects and advantages of the present invention are:

[0021] 1. The device is designed with a special chamfering mechanism, which includes a cutter disc and a chamfering knife group. When the cutter disc rotates, the first chamfering knife and the second chamfering knife of the chamfering knife group are used to chamfer the inner and outer sides of the end of the steel-plastic composite pipe at the same time, and the chamfering efficiency is high.

[0022] 2. The device is designed with an advance and retreat mechanism, which can push the chamfering mechanism to move back and forth along the axial direction of the steel-plastic composite pipe, and can manually control the depth of the chamfer, which is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the chamfering device after end sealing.

[0024] Figure 2 for Figure 1 Top view of the .

[0025] Figure 3 This is the assembly drawing of the chamfering mechanism and the rotating mechanism.

[0026] Figure 4 for Figure 1 main view.

[0027] Figure 5 for Figure 1 Left view of .

[0028] Among them, 1- pipe support mechanism: 101- support seat, 102- clamp, 103- connecting rod; 2- chamfering mechanism: 201- first chamfering knife, 202- knife disc, 203- second chamfering knife, 204- connecting ring, 205- inner limit block, 206- outer limit block, 207- first groove, 208- first knife groove, 209- second knife groove, 210- second groove; 3- rotating mechanism: 301 -motor, 302-reducer, 303-mounting plate; 4-advance and retreat mechanism: 401-first spur bevel gear, 402-transmission shaft, 403-shaft seat, 404-handwheel, 405-screw support seat, 406-screw nut, 407-nut seat, 408-screw, 409-second spur bevel gear, 410-slide rail, 411-slider, 412-shift block; 5-platform; 6-steel-plastic composite pipe. DETAILED DESCRIPTION

[0029] The present invention is described in detail below with reference to specific embodiments.

[0030] The structure of the end sealing rear chamfering device provided by the present invention is as follows Figure 1 and Figure 2 As shown, it includes a pipe supporting mechanism 1, a chamfering mechanism 2, a rotating mechanism 3, an advancing and retreating mechanism 4 and a platform 5.

[0031] like Figure 3 , Figure 4 and Figure 5 As shown, the chamfering mechanism includes a cutter disc 202, a chamfering cutter set and a stopper. A connecting ring 204 is provided in the center of one end face of the cutter disc 202, and an annular second groove 210 is also provided on one end face of the cutter disc 202. The second groove 210 is coaxial with the cutter disc 202, and the function of the second groove is to facilitate the discharge of the debris cut during chamfering. There are two stoppers, which are in a fan-shaped ring shape. The two stoppers are symmetrically arranged on one end face of the cutter disc 202, and one end face of each stopper in a fan-shaped ring shape is fixed on the cutter disc 202, and the arc-shaped side wall of each stopper with a smaller diameter is fitted and connected with the outer side wall of the connecting ring 204. Each stopper is provided with a fan-shaped first groove 207, and the two first grooves 207 are on the same circular ring coaxial with the cutter disc 202. The inner diameter of the first groove 207 is the same as the inner diameter of the second groove 210, and the outer diameter of the first groove 207 is the same as the outer diameter of the second groove 210, and each first groove 207 is connected with the second groove 210. Each limiting member is divided into an inner limiting block 205 and an outer limiting block 206 by a first groove 207. A first knife groove 208 is provided on the outer arc-shaped side wall of the inner limiting block 205, and a second knife groove 209 is provided on the inner arc-shaped side wall of the outer limiting block 206. The first knife groove 208 and the second knife groove 209 are opposite to each other.

[0032] There are two chamfering knife groups, which are composed of a first chamfering knife 201 and a second chamfering knife 203. The first chamfering knife 201 of each chamfering knife group is installed in the first knife groove 207 on the corresponding limiting member, and the second chamfering knife 203 of each chamfering knife group is installed in the second knife groove 210 on the corresponding limiting member. The blades of each first chamfering knife 201 and each second chamfering knife 203 are both straight, and the blades of each first chamfering knife 201 and each second chamfering knife 203 are at an angle of 45° with the knife disc 202. The blades of the two first chamfering knives 201 are both located on the inner wall of the same circular ring, and the blades of the two second chamfering knives 203 are both located on the outer wall of the same circular ring, and the cylinder is coaxial with the knife disc 202, and the cross-section of the circular ring is an isosceles trapezoid. The blades of the two first chamfering knives 201 and the two second chamfering knives 203 are located on the same symmetrical plane of the knife disc 202, and the blades of the first chamfering knife 201 and the second chamfering knife 203 of each chamfering knife group are perpendicular to each other. The minimum distance between the blades of the first chamfering knife 201 and the second chamfering knife 203 of each chamfering knife group is slightly smaller than the wall thickness of the steel-plastic composite pipe 6, and the minimum distance between the blades of the first chamfering knife 201 and the second chamfering knife 203 of each chamfering knife group matches the wall thickness of the steel-plastic composite pipe 6 and is slightly smaller than the width of the first groove.

[0033] The rotating mechanism includes a motor 301 , a reducer 302 and a mounting plate 303 . The reducer 302 is mounted on the mounting plate 303 . The output shaft of the motor 301 is connected to the input end of the reducer 302 . The cutter disc 202 is mounted on the output shaft of the reducer 302 .

[0034] The advance and retreat mechanism includes a sliding mechanism and a driving mechanism. The sliding mechanism includes a slide rail 410, a slider 411 and a stop block 412. There are two slide rails 410, and the two slide rails 410 are symmetrically installed on the platform 5, and the two slide rails 410 are respectively parallel to the axial direction of the steel-plastic composite pipe 6. There are four sliders 411, two of which are installed on one of the slide rails 410, and the other two sliders 411 are installed on the other slide rail 410. The four sliders 411 are respectively located below the mounting plate 303, and two symmetrical positions on the mounting plate 303 are respectively connected to the slide rail 410 through the sliders 411. There are four stop blocks 412, two of which are respectively located at the two ends of one of the slide rails 410, and the other two stop blocks 412 are respectively located at the two ends of the other slide rail 410.

[0035] The driving mechanism includes a screw 408, a screw support seat 405, a screw nut 406, a nut seat 407, a handwheel 404, a transmission shaft 402, a shaft seat 403, a first spur bevel gear 401 and a second spur bevel gear 409. There are two screw support seats 405, which are respectively mounted on the platform 5, and the two ends of the screw 408 are respectively fixed on the two screw support seats 405. The screw 408 is located on the outside of one of the slide rails 410, and the screw 408 is parallel to the two slide rails 411. The screw nut 406 is sleeved on the screw 408, and the screw nut 406 is mounted on the nut seat 407, and the nut seat 407 is connected to the mounting plate 303. The shaft seat 403 is installed on the platform 5, the transmission shaft 402 is installed on the shaft seat 403, the handwheel 404 is mounted on one end of the transmission shaft 402, the first spur gear 401 is mounted on the other end of the transmission shaft 402, the second spur gear 409 is mounted on the other end of the screw rod 408, and the first spur gear 401 is meshed with the second spur gear 409.

[0036] The pipe support mechanism includes a support seat 101, a connecting rod 103 and a clamp 102. There are multiple support seats 101, each of which is fixed on the platform 5. Each support seat 101 is provided with a semicircular groove. Adjacent support seats 101 are connected by a connecting rod 102. There are multiple clamps 102, each of which is semicircular. One end of each clamp 102 is hinged to one side of the corresponding groove, and the other end of each clamp 102 is fixed to the other side of the groove.

[0037] The working principle of the above-mentioned end sealing and chamfering device is as follows:

[0038] like Figure 1 As shown, the steel-plastic composite pipe that needs to be chamfered is placed in the slot of the support seat, and then the steel-plastic composite pipe is fixed on the support seat by a clamp so that the steel-plastic composite pipe is coaxial with the cutter disc. After the steel-plastic composite pipe 6 is fixed, the operator manually rotates the handwheel to make the handwheel rotate forwardly, and the handwheel drives the transmission shaft to rotate forwardly, and the transmission shaft drives the first spur bevel gear to rotate forwardly, and the first spur bevel gear drives the second spur bevel gear to rotate forwardly, and the second spur bevel gear drives the screw rod to rotate forwardly, and the screw rod nut moves in the direction close to the steel-plastic composite pipe, and the screw rod nut drives the nut seat to move in the direction close to the steel-plastic composite pipe, and the nut seat drives the mounting plate to move in the direction close to the steel-plastic composite pipe, and the mounting plate moves in the direction close to the steel-plastic composite pipe with the motor, the reducer and the cutter disc. When the chamfering knife groups on the cutter disc contact the steel-plastic composite pipe, the motor is turned on to start chamfering the end of the steel-plastic composite pipe. During the chamfering process, the operator can observe the chamfering depth. When the chamfering is completed, the motor is turned off and the handwheel is reversed to retract the chamfering assembly.

Claims

1. A chamfering device after end sealing, characterized in that: It includes a pipe supporting mechanism, a chamfering mechanism, a rotating mechanism, an advancing and retreating mechanism and a platform; The chamfering mechanism comprises a cutter disc, a chamfering knife group and a limiter. There is more than one chamfering knife group, and the chamfering knife group consists of a first chamfering knife and a second chamfering knife. The first chamfering knife and the second chamfering knife are both installed on one end surface of the cutter disc, and the blades of the first chamfering knife and the second chamfering knife are in a straight line shape. The angles between the blades of the first chamfering knife and the second chamfering knife and the cutter disc are both 45°. The blades of the first chamfering knife and the second chamfering knife are perpendicular to each other. The minimum distance between the blades of the first chamfering knife and the second chamfering knife matches the wall thickness of the steel-plastic composite pipe. If there are more than two chamfering knife groups, the blades of all the first chamfering knives are located on the inner wall of the same circular ring, and the blades of all the second chamfering knives are located on the outer wall of the same circular ring. The circular ring is coaxial with the cutter disc, and the cross section of the circular ring is an isosceles trapezoid. The number of the limiting pieces and the chamfering tool group is the same, the limiting piece is in a fan-shaped ring shape, a connecting ring is provided in the center of one end face of the cutter disc, one end face of the limiting piece in a fan-shaped ring shape is fixed to the cutter disc, the arcuate side wall with a smaller diameter of each limiting piece is fitted and connected with the outer side wall of the connecting ring, each limiting piece is provided with a fan-shaped first groove, all the first grooves are on the same circular ring coaxial with the cutter disc, each limiting piece is divided into an inner limiting block and an outer limiting block by the first groove, a first knife groove is provided on the outer arcuate side wall of the inner limiting block, a second knife groove is provided on the inner arcuate side wall of the outer limiting block, the first knife groove and the second knife groove are provided on the inner arcuate side wall of the outer limiting block. The grooves are directly opposite to each other. If there is only one stopper and one chamfering knife group, the first chamfering knife is installed in the first knife groove, the second chamfering knife is installed in the second knife groove, and the minimum distance between the blades of the first chamfering knife and the second chamfering knife is less than the distance between the first grooves. If there are more than two stoppers and two chamfering knife groups, the first chamfering knife of each chamfering knife group is installed in the first knife groove on the corresponding stopper, the second chamfering knife of each chamfering knife group is installed in the second knife groove on the corresponding stopper, and the minimum distance between the blades of the first chamfering knife and the second chamfering knife of each chamfering knife group is less than the width of the first groove. The rotating mechanism is connected to the cutter disc, and the rotating mechanism drives the cutter disc to rotate; The advance and retreat mechanism is installed on the platform, and is connected to the rotating mechanism. The advance and retreat mechanism drives the rotating mechanism to reciprocate along the axial direction of the steel-plastic composite pipe; The pipe support mechanism includes a support seat, a connecting rod and a clamp. There are multiple support seats, each of which is fixed on the platform. Each support seat is provided with a semicircular slot. Adjacent support seats are connected by a connecting rod. There are multiple clamps, each of which is semicircular. One end of each clamp is hinged to one side of the corresponding slot, and the other end of each clamp is fixed to the other side of the slot.

2. The end-sealing chamfering device according to claim 1, characterized in that: The cutter disc is provided with an annular second groove, the second groove is coaxial with the cutter disc, the inner diameter of the first groove is the same as the inner diameter of the second groove, the outer diameter of the first groove is the same as the outer diameter of the second groove, and each first groove is connected to the second groove.

3. The end-sealing chamfering device according to claim 1, characterized in that: The rotating mechanism comprises a motor, a reducer and a mounting plate, the reducer is mounted on the mounting plate, the output shaft of the motor is connected to the input end of the reducer, the cutter disc is sleeved on the output shaft of the reducer, and the mounting plate is connected to the advance and retreat mechanism.

4. The end-sealing chamfering device according to claim 1, characterized in that: The advance and retreat mechanism includes a sliding mechanism and a driving mechanism. The sliding mechanism includes a slide rail and a slider. There are two slide rails and four sliders. The two slide rails are symmetrically installed on the platform. The two slide rails are parallel to the axial direction of the steel-plastic composite pipe. Two sliders are installed on one of the slide rails, and the other two sliders are installed on the other slide rail. The four sliders are respectively located below the mounting plate. Two symmetrical positions on the mounting plate are respectively connected to the slide rails through the sliders, and the driving mechanism is fixedly connected to the mounting plate.

5. The end-sealing chamfering device according to claim 4, characterized in that: The sliding mechanism further comprises four stop blocks, wherein two stop blocks are respectively located at two ends of one of the slide rails, and the other two stop blocks are respectively located at two ends of the other slide rail.

6. The end-sealing chamfering device according to claim 5, characterized in that: The driving mechanism includes a screw rod, a screw rod support seat, a screw rod nut and a nut seat. There are two screw rod support seats, which are respectively installed on the platform. The two ends of the screw rod are respectively fixed on the two screw rod support seats. The screw rod is located on the outside of one of the slide rails. The screw rod is parallel to the two slide rails. The screw rod nut is sleeved on the screw rod, and the screw rod nut is installed on the nut seat. The nut seat is connected to the mounting plate.

7. The end-sealing chamfering device according to claim 6, characterized in that: The driving mechanism also includes a handwheel, a transmission shaft, a shaft seat, a first spur bevel gear and a second spur bevel gear. The shaft seat is installed on the platform, the transmission shaft is installed on the shaft seat, the handwheel is sleeved on one end of the transmission shaft, the first spur bevel gear is sleeved on the other end of the transmission shaft, the second spur bevel gear is sleeved on the other end of the screw rod, and the first spur bevel gear is meshed with the second spur bevel gear.

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