Sealing machine for reinforcing composite pipe

Abstract

The utility model relates to the field of reinforced composite pipe processing, and discloses a sealing machine for a reinforced composite pipe, the reinforced composite pipe is provided with a plastic inner layer, a middle reinforced layer and a plastic outer layer, the sealing machine comprises a grooving device, a sealing device, a sealing device and a sealing device, the grooving device can be used for forming a groove in the middle reinforced layer close to the end face; the outer mold device comprises an outer mold, the outer diameter of the outer mold is matched with that of the reinforced composite pipe, and the reinforced composite pipe is sleeved with the outer mold at the position of the groove; the heating device is used for heating the end surface with the groove, so that the plastic inner layer and the plastic outer layer at the groove are in a molten state; and the inner mold device comprises an inner mold, the inner mold can be inserted into the reinforced composite pipe at the end where the groove is located and move towards the groove relative to the outer mold, molten plastic generated by melting of the plastic inner layer and the plastic outer layer is extruded, and the middle reinforced layer is sealed in the plastic with the closed end. According to the technical scheme, the sealing effect is good, and polishing is not needed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of reinforced composite pipe processing, in particular to a sealing machine for reinforced composite pipe. BACKGROUND

[0002] The constitution of reinforced composite pipe generally at least includes: plastic inner layer, middle reinforcing layer, plastic outer layer, when carrying out anticorrosion treatment to the end, generally is to the middle reinforcing layer is sealed to anticorrosion.

[0003] The sealing method of prior art is: the end face of reinforced composite pipe is heated and softened, then the die is sleeved at the end face of reinforced composite pipe and extruded to close the reinforcing layer, since the die is single die, the end face stress will flow to the opposite direction of the die in the extrusion process, causes the closed material to be insufficient, the sealing effect is not good, and the molten plastic overflows to the inner and outer edges of the end face, still needs to increase the process to polish the inner and outer edges of the end face additionally, and the production cost is higher. UTILITY MODEL CONTENTS

[0004] The utility model discloses a sealing machine for reinforced composite pipe, which can overcome the problems of the prior art, such as the single die, the end face stress flowing to the opposite direction of the die in the extrusion process, the closed material being insufficient, the sealing effect being not good, the molten plastic overflowing to the inner and outer edges of the end face, and the production cost being higher.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a sealing machine for reinforced composite pipe, the reinforced composite pipe has a plastic inner layer, a middle reinforcing layer and a plastic outer layer, and the sealing machine comprises:

[0006] A slotting device is arranged to form a groove in the middle reinforcing layer near the end face of the reinforced composite pipe.

[0007] An outer die device comprises an outer die which is matched with the outer diameter of the reinforced composite pipe to be sleeved on the outside of the reinforced composite pipe at the position of the groove.

[0008] A heating device can heat the end face with the groove to make the plastic inner layer and the plastic outer layer at the position of the groove in a molten state.

[0009] An inner die device comprises an inner die which can be inserted into the reinforced composite pipe at one end of the groove and moved towards the groove relative to the outer die, and keeps in contact with the inner side of the plastic inner layer and the inner periphery of the outer die during the movement to extrude the molten plastic generated by the molten plastic inner layer and plastic outer layer into the groove and seal the middle reinforcing layer in the closed plastic at the end.

[0010] In some embodiments, the sealing machine further comprises a delivery device capable of delivering the reinforced composite pipe through the opening of the outer mold to a slotted heating working position where the end face is located outside the outer mold, when the reinforced composite pipe is located at the slotted heating working position, the slitting device opens a groove on the reinforced composite pipe, and the heating device heats the groove, so that the groove returns to a sealing working position contained inside the outer mold, and the outer mold and the inner mold cooperate to compress when the groove is in the sealing working position.

[0011] In some embodiments, the delivery device comprises a positioning mechanism capable of positioning the reinforced composite pipe to an initial position, and a clamping mechanism capable of clamping the reinforced composite pipe and delivering the reinforced composite pipe from the initial position to the slotted heating working position.

[0012] In some embodiments, the positioning mechanism comprises:

[0013] a positioning mounting frame fixedly arranged between the inner mold device and the clamping mechanism, an opening in the middle for the reinforced composite pipe to pass through, and perpendicular to the length direction of the reinforced composite pipe;

[0014] a reinforced composite pipe positioning plate mounted on one side of the positioning mounting frame and capable of reciprocating on the positioning mounting frame to block or release the opening on the positioning mounting frame, when the reinforced composite pipe positioning plate blocks the opening on the positioning mounting frame and abuts against the end face, the reinforced composite pipe is in the initial position;

[0015] a positioning guide rail mounted on the same side of the positioning mounting frame as the reinforced composite pipe positioning plate, the reinforced composite pipe positioning plate reciprocating on the positioning guide rail to reciprocate on the positioning mounting frame; and,

[0016] a positioning drive capable of driving the reinforced composite pipe positioning plate to move.

[0017] In some embodiments, the clamping mechanism comprises:

[0018] a clamping seat comprising an upper clamping block and a lower clamping seat matched with the shape of the reinforced composite pipe, the upper clamping block and the lower clamping seat being arranged in at least two groups along the length direction of the reinforced composite pipe, the upper clamping block being capable of reciprocating in the vertical direction to clamp and fix the reinforced composite pipe;

[0019] a clamping rail parallel to the length direction of the reinforced composite pipe, the clamping seat being capable of reciprocating on the clamping rail to deliver the reinforced composite pipe from the initial position to the slotted heating working position; and,

[0020] a clamping drive capable of driving the upper clamping block and the clamping seat to move.

[0021] In some embodiments, the outer mold inner wall is expanded outwardly to form a conical surface at both front and rear ends.

[0022] In some embodiments, the outer mold device further comprises an outer mold frame, the outer mold is mounted on the outer mold frame to fix the outer mold, the outer mold frame has vertical openings matched with the outer wall of the outer mold, and the outer mold fixing sleeve is arranged in the openings.

[0023] In some embodiments, the inner mold comprises an entering section and a sealing section, the outer diameter of the entering section matches the inner diameter of the reinforced composite pipe, and the sealing section is an annular groove extending outward from one end of the entering section away from the end face and towards the end face; when the inner mold is pressed and matched with the outer mold, the entering section enters the reinforced composite pipe, and the annular groove is sleeved outside the groove.

[0024] In some embodiments, the outer wall of the entering section near one end of the end face is inwardly contracted to form a conical surface.

[0025] In some embodiments, the annular groove comprises a bottom surface and side walls on both sides of the bottom surface, the width of the bottom surface is less than or equal to the wall thickness of the reinforced composite pipe and abuts against the groove, and the side walls abut against the inner wall and the outer wall of the groove.

[0026] In some embodiments, the bottom surface is a plane, and the side walls are curved surfaces or straight surfaces inclined to the outside of the annular groove.

[0027] In some embodiments, the connection between the bottom surface and the side walls is a circular arc surface.

[0028] In some embodiments, the inner wall of the outer mold is coated with a polytetrafluoroethylene anti-sticking layer, and the surfaces of the entering section and the annular groove are coated with a polytetrafluoroethylene anti-sticking layer.

[0029] In some embodiments, the inner mold device further comprises:

[0030] an inner mold moving seat, the inner mold is coaxially and oppositely mounted on the inner mold moving seat relative to the outer mold;

[0031] an inner mold guide rail, the inner mold guide rail is parallel to the length direction of the reinforced composite pipe, and the inner mold moving seat is capable of reciprocating along the length direction of the inner mold guide rail to make the inner mold enter the end face and be pressed and matched with the outer mold; and,

[0032] an inner mold driving member, the inner mold driving member is capable of driving the inner mold moving seat to move.

[0033] In some embodiments, the slotting device comprises:

[0034] a turning tool;

[0035] a turning tool mounting disc, the turning tool is mounted on the turning tool mounting disc, the turning tool mounting disc is parallel to the end face and is capable of rotating to make the turning tool rotate around the end face to remove the intermediate reinforcing layer of the reinforced composite pipe adjacent to the end face;

[0036] a turning guide rail, the turning guide rail is perpendicular to the length direction of the reinforced composite pipe;

[0037] The turning mobile base is installed with the turning driving member, and the turning driving member can drive the turning mobile base to move and the turning disc to rotate.

[0038] The turning driving member, which can drive the turning disc to rotate and the turning mobile base to move.

[0039] In some embodiments, the heating device comprises:

[0040] The hot air heater;

[0041] The hot air heater installation disc is installed with the hot air heater, and the hot air heater installation disc is parallel to the end face and can rotate to make the hot air heater rotate around the groove and heat the groove.

[0042] The heating guide rail is perpendicular to the length direction of the reinforced composite pipe.

[0043] The hot air mobile base is installed with the hot air heater installation disc, and the hot air mobile base can move along the length direction of the heating guide rail to align the hot air heater with the groove.

[0044] The hot air driving member, which can drive the hot air heater installation disc to rotate and the hot air mobile base to move.

[0045] By the above technical solution, the slotting device opens the groove at the intermediate reinforcing layer near the end face of the reinforced composite pipe, the heating device heats the groove to make the inner layer and the outer layer of the plastic in a molten state, the inner mold is inserted into the reinforced composite pipe along the direction of the groove and cooperates with the outer mold to compress tightly, the inner and outer layers of the intermediate reinforcing layer in the molten state are located in the outer mold and the inner mold, the outer mold contacts the inner side of the inner layer of the plastic and the inner periphery of the outer mold, the molten plastic is extruded from the outer mold and the inner mold, enters the groove, and is cooled to seal the intermediate reinforcing layer in the plastic closed at the end. Due to the limiting of the inner mold and the outer mold, the molten plastic will not overflow, the sealing material is sufficient, the sealing effect is good, and the polished end port after sealing is not needed, and the production cost is low. BRIEF DESCRIPTION OF DRAWINGS

[0046] Figure 1 is the side view of the automatic sealing machine disclosed by the embodiment of the utility model;

[0047] Figure 2 is the top view of the automatic sealing machine disclosed by the embodiment of the utility model;

[0048] Figure 3 is the overall view of the automatic sealing machine disclosed by the embodiment of the utility model;

[0049] Figure 4It is the embodiment of the utility model discloses the positioning mechanism schematic diagram;

[0050] Figure 5 It is the embodiment of the utility model discloses the whole view of inner mould and outer mould;

[0051] Figure 6 It is the embodiment of the utility model discloses the section view of inner mould and outer mould;

[0052] Figure 7 It is the embodiment of the utility model discloses the section view of inner mould;

[0053] Figure 8 It is the embodiment of the utility model discloses the section view of inner mould;

[0054] Figure 9 It is the embodiment of the utility model discloses the schematic diagram of reinforcing composite pipe sealing process;

[0055] Figure 10 It is the embodiment of the utility model discloses the variation diagram of end face in reinforcing composite pipe sealing process.

[0056] Explanation of reference signs

[0057] 1, rack;2, reinforcing composite pipe;21, end face;211, recess;3, slotting device;31, turning tool;32, turning tool mounting disc;33, turning guide rail;34, moving seat;35, turning driving part;4, heating device;41, hot air heater;42, hot air heater mounting disc;43, heating guide rail;44, hot air moving seat;45, hot air driving part;5, outer mould device;51, outer mould;52 outer mould frame;6, inner mould device;61, inner mould;611, entering section;612, annular groove;6121, bottom surface;6122, side wall;62, inner mould moving seat;63, inner mould guide rail;64, inner mould driving part;7, positioning mechanism;71, positioning plate;72, positioning guide rail;73, positioning driving part;8, clamping mechanism;81, clamping seat;811, upper clamping block;812, lower clamping seat;82, clamping rail;83, clamping driving part. DETAILED DESCRIPTION

[0058] In the utility model, in the case where not making opposite statement, the orientation word such as "up", "down", "left", "right", "inner", "outer" etc. used is only for the convenience of describing the utility model and simplifying the description, and is not the orientation or position relation of the indicated device or element must have specific orientation, with specific orientation configuration and operation, therefore can not be understood as the limitation to the utility model. When the absolute position of the described object changes, then the relative position relation can also change correspondingly.

[0059] In order to solve the prior art exists in the mold for single mold, in the extrusion process end face stress will flow to the opposite direction of the mold, resulting in insufficient closed material, sealing effect is not good, and the molten plastic overflow to the end face inside and outside edge, also need to increase the process to polish the end face inside and outside edge, the production cost is higher, the utility model provides a kind of for the sealing machine of reinforced composite pipe, reinforced composite pipe 2 with plastic inner layer, middle reinforcing layer and plastic outer layer, as shown in Figures 1-3 And Figure 9 As shown, sealing machine includes: slotting device 3, slotting device 3 is arranged to be able to set groove 211 at the middle reinforcing layer of the end face 21 of reinforced composite pipe 2;Outer mold device 5, outer mold device 5 includes outer mold 51, outer mold 51 matches the outer diameter of reinforced composite pipe 2, to be suitable for being set in reinforced composite pipe 2 outside at groove 211 position;Heating device 4, heating device 4 can heat the end face 21 with groove 211, to make the plastic inner layer and plastic outer layer at groove 211 position be in molten state;And inner mold device 6, inner mold device 6 includes inner mold 61, inner mold 61 can be inserted into reinforced composite pipe 2 at the end where groove 211 is and moves towards groove 211 relative to outer mold 51, and keeps being in contact with the inner side of plastic inner layer and the inner periphery of outer mold 51 respectively during the movement, to extrude molten plastic generated by plastic inner layer and plastic outer layer at groove 211 and seal the middle reinforcing layer in the plastic closed at end portion.By the above technical scheme, slotting device 3 sets groove 211 at the middle reinforcing layer of the end face 21 of reinforced composite pipe 2, heating device 4 heats groove 211 to make the plastic inner layer and plastic outer layer be in molten state, inner mold 61 is inserted into reinforced composite pipe 2 along the direction of groove 211 and cooperates with outer mold 51 set outside end face 21 to compress, the inner and outer layers of molten state plastic of middle reinforcing layer in groove 211 are located in outer mold 51 and inner mold 61, outer mold 51 is in contact with the inner side of plastic inner layer and the inner periphery of outer mold 51, molten state plastic is extruded from two directions of outer mold 51 and inner mold 61, enters groove 211, and seals the middle reinforcing layer in the plastic closed at end portion after cooling.Due to the limiting of inner mold 61 and outer mold 51, molten state plastic will not overflow, the sealing material is sufficient, the sealing effect is good, and the polished end port after sealing is not needed, and the production cost is low.As shown in Figure 9 The schematic diagram of sealing process, outer mold 51 is static mold, inner mold 61 is dynamic mold, inner mold 61 is inserted into reinforced composite pipe 2 and cooperates with outer mold 51 to compress and keeps a certain time to seal the middle reinforcing layer.Of course, outer mold 51 can be set as static mold, outer mold 51 moves synchronously with reinforced composite pipe 2 and is set outside inner mold 61.As shown in Figure 10 As shown, it is the change diagram of end face 21 in sealing process, groove 211 is set at the middle reinforcing layer near end face 21, the plastic of inner and outer layers of groove 211 enters the recess, seals the middle reinforcing layer, and completes sealing.

[0060] In some embodiments, as shown in Figures 1-3 and Figure 9 The sealing machine further comprises a delivery device capable of delivering the reinforced composite pipe 2 through the opening of the outer mold 51 to a slotting and heating working position, in which the end of the reinforced composite pipe 2 protrudes out of the outer mold 51. After the reinforced composite pipe 2 reaches the slotting and heating working position, the slotting device 3 slots the end face 21 to form a groove 211, and the heating device 4 heats the groove 211 to melt the inner and outer plastic layers of the groove 211, and in the process of heating, the reinforced composite pipe 2 shrinks and the groove 211 retreats to be contained inside the outer mold 51, at which time the reinforced composite pipe 2 is in a sealing working position. The outer mold 51 and the inner mold 61 are matched and pressed to close the intermediate reinforcing layer when the groove 211 is in the sealing working position. When the reinforced composite pipe 2 is in the slotting and heating working position, the end of the reinforced composite pipe 2 is arranged to protrude out of the outer mold 51, which facilitates the slotting and heating operation of the end of the reinforced composite pipe 2, and the waste material generated by slotting is arranged outside the outer mold 51, and the heat generated during heating can also be dissipated around, without being concentrated in the pipe, and the heat of the reinforced composite pipe 2 will not be transmitted by the outer mold 51. Of course, the end face 21 can also be contained in the outer mold 51 when the reinforced composite pipe 2 reaches the slotting and heating working position, and then the groove 211 is slotted and the groove 211 is heated. The reinforced composite pipe 2 can also be slotted first and then inserted into the outer mold 51 for heating and sealing operation.

[0061] In some embodiments, as shown in Figures 1-4 In order to facilitate the batch sealing operation of the reinforced composite pipe 2, the delivery device is provided with a positioning mechanism 7 and a clamping mechanism 8, so that the reinforced composite pipe 2 is in the same position each time. The positioning mechanism 7 is used to position the reinforced composite pipe 2 to an initial position, and then the clamping mechanism 8 is used to clamp the reinforced composite pipe 2 and deliver the reinforced composite pipe 2 from the initial position to the slotting and heating working position.

[0062] In some embodiments, as shown in Figure 4 The positioning mechanism 7 comprises a positioning mounting frame, which is fixedly arranged at any position between the inner mold device 6 and the clamping mechanism 8, contains the reinforced composite pipe 2 through the opening, and is perpendicular to the length direction of the reinforced composite pipe 2. The positioning mounting frame is provided with a positioning mechanism 71 arranged on the positioning mounting frame, which is capable of positioning the reinforced composite pipe 2 to the initial position. Figure 4The positioning installation frame is the same installation frame as the outer mold frame 52, which saves space. Of course, the positioning installation frame can also be separately arranged as long as the position of the reinforced composite pipe 2 is unique; the positioning plate 71 is arranged on one side of the positioning installation frame and can reciprocate on the positioning installation frame to stop or release the opening on the positioning installation frame. When the positioning plate 71 stops on the opening on the positioning installation frame and abuts against the end face 21, the reinforced composite pipe 2 is in the initial position; the positioning guide rail 72 is arranged on the same side of the positioning installation frame as the positioning plate 71, and the positioning plate 71 reciprocates on the positioning guide rail 72 to reciprocate on the positioning installation frame; and the positioning driving member 73 can drive the positioning plate 71 to move, as shown in Figure 4 FIG. 2, the positioning driving member 73 is a cylinder arranged on the top of the outer mold frame 52, which drives the positioning plate 71 to reciprocate on the positioning guide rail 72 to stop or release the opening on the positioning installation frame.

[0063] In some embodiments, as shown in Figures 1-3 FIG. 3, the clamping mechanism 8 includes a clamping seat 81, the clamping seat 81 includes upper clamping blocks 811 and lower clamping seats 812 matched with the shape of the reinforced composite pipe 2, at least two groups of the upper clamping blocks 811 and the lower clamping seats 812 are arranged along the length direction of the reinforced composite pipe 2 to ensure that the reinforced composite pipe 2 remains stable and does not change direction during movement, the upper clamping blocks 811 can reciprocate in the vertical direction to clamp and fix the reinforced composite pipe 2, and different specifications of arc plates are arranged in the upper clamping blocks 811 and the lower clamping seats 812, which are suitable for different specifications of the reinforced composite pipe 2 and do not change the working axis of the reinforced composite pipe 2; a clamping rail 82 parallel to the length direction of the reinforced composite pipe 2, the clamping seat 81 can reciprocate on the clamping rail 82 to deliver the reinforced composite pipe 2 from the initial position to the slotted heating working position; and a clamping driving member 83, which can drive the upper clamping blocks 811 and the clamping seat 81 to move, the clamping driving member 83 includes a cylinder driving the upper clamping blocks 811 to move up and down and a cylinder driving the clamping seat 81 to reciprocate along the clamping rail 82. Figure 3 As shown in FIG. 4, vertical guide columns are fixed on both sides of the lower clamping seat 812, the guide columns pass through both sides of the upper clamping blocks 811 and are connected to a top plate above the upper clamping blocks 811, a cylinder is arranged on the top plate, the output end of the cylinder passes through the top plate and is connected to the upper clamping blocks 811, and the cylinder drives the upper clamping blocks 811 to reciprocate on the guide columns on both sides to clamp or release the reinforced composite pipe 2.

[0064] In actual use, the delivery device first extends the reinforced composite pipe 2 into the clamping seat 81, places it on the lower clamping block 812, and the upper clamping block 811 is in a released state of the reinforced composite pipe 2, and the positioning plate 71 is stopped at the opening of the positioning mounting frame, and the end face 21 of the reinforced composite pipe 2 is abutted against the positioning plate 71, so that the reinforced composite pipe 2 is in an initial position, and positioning is completed. The positioning plate 71 is released from the opening of the positioning mounting frame, the upper clamping block 811 is driven to clamp the reinforced composite pipe 2 by the clamping seat 81, and then the clamping seat 81 is driven to move along the clamping rail 82 to deliver the reinforced composite pipe 2 to the slotted heating working position.

[0065] In some embodiments, as shown in Figures 5-6 the inner wall of the outer mold 51 is outwardly expanded to form a conical surface at both front and rear ends, facilitating the insertion of the reinforced composite pipe 2 and the inner mold 61.

[0066] In some embodiments, as shown in Figure 4 the outer mold device 5 further comprises an outer mold frame 52, and the outer mold 51 is installed on the outer mold frame 52 to fix the outer mold 51, and the outer mold frame 52 has a vertical opening matched with the outer wall of the outer mold 51, and the outer mold 51 is fixedly sleeved in the opening. Figure 4 the outer mold frame 52 and the positioning mounting frame are the same mounting frame, which simplifies the components.

[0067] In some embodiments, as shown in Figures 5-9 the inner mold 61 comprises an entering section 611 and a sealing section, the outer diameter of the entering section 611 matches the inner diameter of the reinforced composite pipe 2, and the sealing section is an annular groove 612 extending outward from one end of the entering section 611 away from the end face 21 and towards the end face 21, and when the inner mold 61 is pressed and tightened with the outer mold 51, the entering section 611 enters the reinforced composite pipe 2 and adheres to the inner wall of the reinforced composite pipe 2, and the annular groove 612 is sleeved outside the recess 211 and abuts against the inner wall of the outer mold 51.

[0068] In some embodiments, as shown in Figures 6-8 the outer wall of the entering section 611 near one end of the end face 21 is inwardly contracted to form a conical surface, facilitating the entering of the inner mold 61 into the reinforced composite pipe 2.

[0069] In some embodiments, as shown in Figures 6-9 the annular groove 612 comprises a bottom surface 6121 and side walls 6122 on both sides of the bottom surface 6121, the width of the bottom surface 6121 is less than or equal to the wall thickness of the reinforced composite pipe 2, and when the inner mold 61 is pressed and tightened with the outer mold 61, the bottom surface 6121 abuts against the recess 211, the side walls 6122 abut against the inner wall and the outer wall of the recess 211, and the outer wall of the annular groove 612 abuts against the inner wall of the outer mold 61, thereby limiting the movement direction of the molten plastic in the inner and outer layers of the recess 211, causing the molten plastic to enter the recessed part of the recess 211, and sealing the middle reinforcing layer in the end-closed plastic to prevent the molten plastic from flowing out.

[0070] In some embodiments, the bottom surface 6121 and the sidewall 6122 have different shapes, such as Figure 9 As shown, after sealing, the end shape of the reinforced composite pipe 2 corresponds to the shape of the bottom surface 6121 and the side wall 6122. Figure 6 As shown, the bottom surface 6121 is a plane, and the sidewall 6122 is a curved surface that slopes outwards from the annular groove 612. Figure 7 As shown, the bottom surface 6121 is a plane, the side wall 6122 is an inclined surface sloping outwards from the annular groove 612, and the connection between the bottom surface 6121 and the side wall 6122 is an arc surface. Figure 8 As shown, the bottom surface 6121 is a plane, and the side wall 6122 is an inclined surface that slopes outward toward the annular groove 612. The side wall 6122 slopes outward toward the annular groove 612, which restricts the inner and outer layers of molten plastic from being squeezed toward the middle. It maintains a sharp corner or a blunt corner on the outside of the annular groove 612 to prevent the molten plastic from turning outward and to form a rounded seal. After the seal is completed, there is no need to trim the end of the reinforced composite tube 2.

[0071] In some embodiments, the inner wall of the outer mold 51 is coated with a polytetrafluoroethylene (PTFE) anti-stick layer, and the surfaces of the inlet section 611 and the annular groove 612 are coated with a PTFE anti-stick layer to prevent molten plastic from sticking to the outer mold 51 and the inner mold 61 during the sealing process.

[0072] In some embodiments, such as Figures 1-3 As shown, the inner mold device 6 further includes: an inner mold moving seat 62, on which the inner mold 61 and the outer mold 51 are coaxially mounted; an inner mold guide rail 63, parallel to the length direction of the reinforced composite tube 2, allowing the inner mold moving seat 62 to reciprocate along the length direction of the inner mold guide rail 63 to allow the inner mold 61 to enter the end face 21 and engage with and press against the outer mold 51; and an inner mold driving member 64, which can drive the inner mold moving seat 62 to move and can be configured as a cylinder in the prior art. In use, the inner mold moving seat 62 is driven to move on the inner mold guide rail 63, allowing the inner mold 61 to enter the reinforced composite tube 2 and engage with and press against the outer mold 61 for a certain period of time. After sealing, the inner mold moving seat 62 is driven to remove the inner mold 61 from the reinforced composite tube 2, awaiting the next operation.

[0073] In some embodiments, such as Figures 1-3As shown, the slotting device 3 slots in the manner of turning, and comprises: a turning tool 31, the cutting edge of the turning tool 31 is aligned with the middle reinforcing layer of the end face 21; a turning tool mounting disc 32, the turning tool 31 is mounted on the turning tool mounting disc 32, the turning tool mounting disc 32 is parallel to the end face 21 and can rotate to make the turning tool 31 rotate around the end face 21, so that the turning tool 31 removes the middle reinforcing layer of the reinforcing composite pipe 2 near the end face 21; a turning guide rail 33, the turning guide rail 33 is perpendicular to the length direction of the reinforcing composite pipe 2; a turning moving seat 34, the turning tool mounting disc 32 is mounted on the turning moving seat 34, the turning moving seat 34 moves along the length direction of the turning guide rail 33 to align the turning tool 31 with the middle reinforcing layer of the end face 21; and a turning driving member 35, the turning driving member 35 can drive the turning tool mounting disc 32 to rotate and the turning moving seat 34 to move, the turning driving member 35 is a motor in the prior art to drive the turning tool mounting disc 32 to rotate, and a cylinder to drive the turning moving seat 34 to move. In use, the turning moving seat 34 is driven to move on the turning guide rail 33 to align the turning tool 31 with the middle reinforcing layer of the end face 21, then the turning tool mounting disc 32 is driven to rotate to remove the middle reinforcing layer of the end face 21 to form the groove 211, the slotting is completed, and the original position is returned to wait for the next operation. Other manners can also be used for slotting, such as using a heatable pressing slot matched with the shape of the middle reinforcing layer, and the pressing slot is attached to the middle reinforcing layer to heat, so that the middle reinforcing layer is heated and melted to form the groove.

[0074] In some embodiments, as Figures 1-3As shown, the heating device 4 uses hot air heating and includes: a hot air heater 41, the air outlet of which is aligned with the groove 211; a hot air heater mounting plate 42, on which the hot air heater 41 is mounted, the mounting plate being parallel to the end face 21 and rotatable, allowing the hot air heater 41 to rotate around the groove 211 and heat it; a heating guide rail 43, perpendicular to the length of the reinforced composite pipe 2; a hot air moving seat 44, on which the hot air heater mounting plate 42 is mounted, and the moving seat 44 being movable along the length of the heating guide rail 43 to align the hot air heater 41 with the groove 211; and a hot air drive component 45, which drives the hot air heater mounting plate 42 to rotate and the hot air moving seat 44 to move, the drive component 45 being a motor for rotating the hot air heater mounting plate 42 and a cylinder for moving the hot air moving seat 44. In use, the hot air moving base 44 is driven to move on the heating guide rail 43, aligning the hot air heater 41 with the groove 211. The hot air heater 41 is turned on, and at the same time, the hot air heater mounting plate 42 is driven to rotate, causing the hot air heater 41 to surround the groove 211 and heat it. Heating is completed when the inner and outer plastic layers of the groove 211 are in a molten state. The plate then returns to its original position to await the next heating. Other heating methods can also be used, such as a heating plate, which is attached to the inner and outer plastic layers of the groove 211 and heated until the inner and outer plastic layers are in a molten state.

[0075] Sealing machines also include, for example Figures 1-3 The frame 1 shown includes a horizontal operating table and a lower support frame. Along the length of the operating table, from left to right, are arranged an inner mold device 6, a grooving device 3, a heating device 4, an outer mold device 5, a positioning mechanism 7, and a clamping mechanism 8. The inner mold 61 is located on the side of the inner mold device 6 closest to the outer mold device 5. The grooving device 3 and the heating device 4 are respectively located on the upper and lower sides of the operating table. The positioning mechanism 7 can be positioned anywhere along the length of the reinforced composite pipe 2 between the inner mold device 6 and the clamping mechanism 8. Specifically, the positioning mounting bracket is positioned anywhere between the inner mold device 6 and the clamping mechanism 8, and the other components of the positioning mechanism 7 are correspondingly mounted on the positioning mounting bracket. Figures 1-4 In one embodiment of the positioning mounting bracket, the outer mold frame 52 is also used as the positioning mounting bracket, and other components are installed on the side of the positioning mounting bracket away from the inner mold device 6. This simplifies the components and reduces the space occupied by the entire sealing machine without affecting the use of the outer mold device 5. Alternatively, other components can be installed on the side of the positioning mounting bracket closer to the inner mold device 6, or the positioning mounting bracket can be separately set at any position between the inner mold device 6 and the clamping mechanism 8 along the length of the reinforced composite pipe 2.

[0076] The sealing machine uses PLC program to control each driving part when in use, so as to extend the reinforced composite pipe 2 into the clamping seat 81, at this time the clamping seat 81 is in an unclamped state, the reinforced composite pipe 2 is moved to the end face 21 of the reinforced composite pipe 2 abutting against the positioning plate 71, reaches the initial position, and positioning is completed. The positioning plate 71 is released from the opening on the positioning mounting frame, the upper clamping block 811 is driven to make the clamping seat 81 clamp the reinforced composite pipe 2 and move along the clamping track 82, so as to deliver the reinforced composite pipe 2 to the slotted heating working position. The turning moving seat 34 and the turning tool mounting disc 32 are driven, so that the turning tool 31 opens the groove 211 in the middle reinforcing layer of the end face 21, the hot air moving seat 44 and the hot air heater 41 are driven, so that the hot air heater 41 surrounds the groove 211 and heats to make the inner and outer layers of the groove 211 in a molten state, and the groove 211 is retracted into the outer mold 51 during heating and is in a sealing working position, the inner mold moving seat 62 is driven to move, so that the inner mold 61 is inserted into the reinforced composite pipe 2 and is pressed tightly with the outer mold 61, and a certain time is kept, after the end portion is cooled, the sealing work is completed, the reinforced composite pipe 2 after sealing is retreated from the inner mold 61 and the outer mold 51, and the next operation is carried out.

[0077] The preferred embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to this. Within the technical concept range of the utility model, the technical scheme of the utility model can be variously simply modified, including that each specific technical feature is combined in any suitable mode. In order to avoid unnecessary repetition, the utility model does not further explain various possible combination modes. But these simple modifications and combinations should also be regarded as the disclosed contents of the utility model and all belong to the protection range of the utility model.

Claims

1. A sealing machine for reinforcing composite pipes, the reinforcing composite pipe (2) having a plastic inner layer, an intermediate reinforcing layer and a plastic outer layer, characterized in that, The sealing machine comprises: a slotting device (3) arranged to form a groove (211) in the intermediate reinforcing layer of the reinforced composite pipe (2) near the end face (21); an outer mold device (5) comprising an outer mold (51) matched with the outer diameter of the reinforced composite pipe (2) to be sleeved on the reinforced composite pipe (2) at the position of the groove (211); a heating device (4) capable of heating the end face (21) with the groove (211) to melt the plastic inner layer and the plastic outer layer at the position of the groove (211); and an inner mold device (6) comprising an inner mold (61) capable of being inserted into the reinforced composite pipe (2) at one end of the groove (211) and moving towards the groove (211) relative to the outer mold (51) and keeping in contact with the inner side of the plastic inner layer and the inner periphery of the outer mold (51) during the movement to extrude the molten plastic generated by the melting of the plastic inner layer and the plastic outer layer into the groove (211) and seal the intermediate reinforcing layer in the end-closed plastic.

2. The seamer for reinforcing composite pipes according to claim 1, characterized in that, The sealing machine further comprises a delivery device capable of delivering the reinforced composite pipe (2) through the opening of the outer mold (51) to a slotting and heating working position where the end face (21) is located outside the outer mold (51), when the reinforced composite pipe (2) is located in the slotting and heating working position, the slotting device (3) forms the groove (211) in the reinforced composite pipe (2), and the heating device (4) heats the groove (211) to make the groove (211) retreat to a sealing working position contained inside the outer mold (51), and the outer mold (51) and the inner mold (61) are pressed together at the position of the groove (211) when the groove (211) is in the sealing working position.

3. The seamer for reinforcing composite tubes according to claim 2, characterized in that, The delivery device comprises a positioning mechanism (7) capable of positioning the reinforced composite pipe (2) to an initial position and a clamping mechanism (8) capable of clamping the reinforced composite pipe (2) and delivering the reinforced composite pipe (2) from the initial position to the slotting and heating working position.

4. The seamer for reinforcing composite tubes according to claim 3, characterized in that, The positioning mechanism (7) comprises: a positioning mounting frame fixedly arranged between the inner mold device (6) and the clamping mechanism (8), an intermediate opening containing the reinforced composite pipe (2) to pass through and being perpendicular to the length direction of the reinforced composite pipe (2); a positioning plate (71) mounted on one side of the positioning mounting frame and capable of reciprocally moving on the positioning mounting frame to stop at or release the opening of the positioning mounting frame, when the positioning plate (71) stops at the opening of the positioning mounting frame and abuts against the end face (21), the reinforced composite pipe (2) is in the initial position; A positioning guide rail (72) is mounted on the same side of the positioning mounting frame as the positioning plate (71), and the positioning plate (71) reciprocates on the positioning guide rail (72) to reciprocate on the positioning mounting frame; and A positioning driving member (73) is capable of driving the positioning plate (71) to move.

5. The seamer for reinforcing composite tubes of claim 3, wherein, The clamping mechanism (8) comprises: A clamping seat (81) comprises upper clamping blocks (811) and lower clamping seats (812) matched with the shape of the reinforced composite pipe (2), and at least two groups of the upper clamping blocks (811) and the lower clamping seats (812) are arranged along the length direction of the reinforced composite pipe (2), and the upper clamping blocks (811) are capable of reciprocating in the vertical direction to clamp and fix the reinforced composite pipe (2); A clamping rail (82) is parallel to the length direction of the reinforced composite pipe (2), and the clamping seat (81) is capable of reciprocating on the clamping rail (82) to deliver the reinforced composite pipe (2) from the initial position to the slotting and heating working position; and A clamping driving member (83) is capable of driving the upper clamping blocks (811) and the clamping seat (81) to move.

6. The seamer for reinforcing composite tubes of claim 1, wherein, The inner wall of the outer mold (51) is outwardly expanded to form a conical surface at the front and rear ends; and / or The outer mold device (5) further comprises an outer mold frame (52), and the outer mold (51) is mounted on the outer mold frame (52) to fix the outer mold (51), and the outer mold frame (52) has a vertical opening matched with the outer wall of the outer mold (51), and the outer mold (51) is fixedly sleeved in the opening.

7. The seamer for reinforcing composite tubes of claim 1, wherein, The inner mold (61) comprises an entering section (611) and a sealing section, the outer diameter of the entering section (611) is matched with the inner diameter of the reinforced composite pipe (2), and the sealing section is an annular groove (612) extending outward from one end of the entering section (611) away from the end face (21) and towards the end face (21), and when the inner mold (61) is matched and compressed with the outer mold (51), the entering section (611) enters the reinforced composite pipe (2), and the annular groove (612) is sleeved outside the groove (211).

8. The seamer for reinforcing composite tubes of claim 7, wherein, The outer wall of one end of the entering section (611) near the end face (21) is inwardly contracted to form a conical surface.

9. The seamer for reinforcing composite tubes of claim 7, wherein, The annular groove (612) comprises a bottom surface (6121) and side walls (6122) on both sides of the bottom surface (6121), the width of the bottom surface (6121) is less than or equal to the wall thickness of the reinforced composite pipe (2) and abuts against the groove (211), and the side walls (6122) abut against the inner wall and the outer wall of the groove (211).

10. The seamer for reinforcing composite tubes of claim 9, wherein, The bottom surface (6121) is a plane, and the side walls (6122) are curved surfaces or straight surfaces inclined to the outside of the annular groove (612); and / or The connection between the bottom surface (6121) and the side walls (6122) is a circular arc surface.

11. The seamer for reinforcing composite tubes of claim 7, wherein, The outer mold (51) is coated with a polytetrafluoroethylene anti-sticking layer on the inner wall, and the entering section (611) and the annular groove (612) are coated with a polytetrafluoroethylene anti-sticking layer on the surface.

12. The seamer for reinforcing composite tubes of claim 1, wherein, The inner mold device (6) further comprises: An inner mold moving seat (62), wherein the inner mold (61) is coaxially and oppositely installed on the inner mold moving seat (62) relative to the outer mold (51); An inner mold guide rail (63), wherein the inner mold guide rail (63) is parallel to the length direction of the reinforced composite pipe (2), and the inner mold moving seat (62) can reciprocally move along the length direction of the inner mold guide rail (63) to make the inner mold (61) enter the end face (21) and be compressed and tightly fitted with the outer mold (51); and An inner mold driving member (64), wherein the inner mold driving member (64) can drive the inner mold moving seat (62) to move.

13. The seamer for reinforcing composite tubes of claim 1, wherein, The slotting device (3) comprises: A turning tool (31); A turning tool mounting disc (32), wherein the turning tool (31) is mounted on the turning tool mounting disc (32), the turning tool mounting disc (32) is parallel to the end face (21) and can rotate to make the turning tool (31) rotate around the end face (21) to remove the intermediate reinforcing layer of the reinforced composite pipe (2) near the end face (21); A turning tool guide rail (33), wherein the turning tool guide rail (33) is perpendicular to the length direction of the reinforced composite pipe (2); A turning tool moving seat (34), wherein the turning tool mounting disc (32) is mounted on the turning tool moving seat (34), and the turning tool moving seat (34) moves along the length direction of the turning tool guide rail (33) to align the turning tool (31) with the intermediate reinforcing layer of the end face (21); and A turning tool driving member (35), wherein the turning tool driving member (35) can drive the turning tool mounting disc (32) to rotate and the turning tool moving seat (34) to move.

14. The seamer for reinforcing composite tubes of claim 1, wherein, The heating device (4) comprises: A hot air heater (41); A hot air heater mounting disc (42), wherein the hot air heater (41) is mounted on the hot air heater mounting disc (42), the hot air heater mounting disc (42) is parallel to the end face (21) and can rotate to make the hot air heater (41) rotate around the groove (211) and heat the groove (211); A heating guide rail (43), wherein the heating guide rail (43) is perpendicular to the length direction of the reinforced composite pipe (2); A hot air moving seat (44), wherein the hot air heater mounting disc (42) is mounted on the hot air moving seat (44), and the hot air moving seat (44) can move along the length direction of the heating guide rail (43) to align the hot air heater (41) with the groove (211); and A hot air driving member (45), wherein the hot air driving member (45) can drive the hot air heater mounting disc (42) to rotate and the hot air moving seat (44) to move.

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