A PE corrugated pipe forming machine that is easy to replace molds

Abstract

The present invention relates to the field of PE corrugated pipe processing, and in particular to a PE corrugated pipe forming machine that is convenient for mold replacement, including a mounting frame and two conveyor machine tools. The PE corrugated pipe forming machine that is convenient for mold replacement of the present invention is composed of a semi-concave forming module and a semi-convex forming module to form a single independent forming mold. When the unlocking piece removes the plug plate from the conveyor belt, the semi-convex forming module on the semi-concave forming module can be telescopically adjusted by the lifting drive assembly, thereby completing the adjustment of the shape and size of the convex structure of the forming mold. At the same time, with the feature that the semi-concave forming module is arranged along the inclined unlocking piece to slide freely, the work of automatically adjusting the spacing between the adjusted forming molds is completed. It overcomes the technical disadvantages that the forming molds are all uniform fixed sizes with unchangeable shapes and sizes, resulting in a large amount of forming mold opening costs and reserve space, and the replacement of the forming mold is also time-consuming and laborious.

Description

Technical Field

[0001] The invention relates to the field of PE corrugated pipe processing, in particular to a PE corrugated pipe forming machine which is convenient for mold replacement. Background Art

[0002] The processing principle of PE single-wall corrugated pipe is mainly based on the extrusion molding process. The mixed polyethylene (PE) resin and additives are heated and melted by a screw extruder and continuously extruded into a PE tubular blank. Then, the outer wall of the PE tubular blank is continuously extruded into a continuous corrugated structure using the molding dies that rotate in a cycle on the front and rear sides. The shape and size of the convex structure in the molding die determine the shape and size of the convex part of the outer wall of the corrugated pipe after molding. However, each molding die involved in the circular rotation has a uniform fixed size that cannot be changed. Therefore, when it is necessary to change the shape and size of the convex part of the outer wall of the corrugated pipe after molding, all the molding dies involved in the circular rotation must be replaced, resulting in the need to prepare a huge number and types of molding dies for the production of different corrugated pipes. Not only does it consume a lot of molding mold opening costs and storage space, but each replacement of the molding mold will also take up a lot of disassembly and assembly time, seriously delaying the production efficiency of the corrugated pipe. Summary of the invention

[0003] In order to overcome the disadvantages that the molding molds are all of uniform fixed size with unchangeable shapes and sizes, which results in a large amount of molding mold opening cost and storage space, and the replacement of the molding mold is also time-consuming and labor-intensive, the present invention provides a PE corrugated pipe molding machine which is easy to replace the mold.

[0004] The technical scheme is as follows: A PE corrugated pipe forming machine that is easy to replace molds, including a mounting frame, a conveyor machine, a conveyor belt, a semi-concave forming module, a slide rail, a rack, a plug plate, a compression spring, a lifting drive assembly and an unlocking member; two conveyor machines are installed on the mounting frame, and the conveyor machines are set to be in an upward tilted state in the conveying direction; a sliding groove structure is provided on the conveyor machine; a plurality of semi-concave forming modules are slidably connected between the sliding groove structures on the conveyor machine; a C-shaped slide groove structure is provided on the semi-concave forming module; a semi-convex forming module is slidably connected in the C-shaped slide groove structure on the semi-concave forming module; the semi-concave forming module and the semi-convex forming module together form an independent forming mold; A slide rail is fixedly connected to the semi-concave forming module; a rack is slidably connected to the slide rail; the rack is fixedly connected to the semi-convex forming module on the same semi-concave forming module; a lifting drive assembly that controls the movement of each rack respectively is connected to the conveyor bed; the conveyor bed is rotatably connected to the conveyor belt through an internal drive unit; a number of socket structures are provided on the conveyor belt; a plug plate is slidably connected to the semi-concave forming module; the plug plate is plugged into the corresponding socket structures on the adjacent conveyor belt; a compression spring is fixedly connected between the plug plate and the semi-concave forming module; an unlocking member that separates the plug plate from the socket structure of the conveyor belt is fixedly connected to the opposite sides of the two conveyor beds, the unlocking member is parallel to the conveyor bed, and the lower end of the unlocking member is located on one side of the lifting drive assembly.

[0005] Preferably, the lifting drive assembly includes a bidirectional variable speed motor, a driving spur gear, a vertical rod, a bushing, a transmission spur gear and an electric push rod; the bidirectional variable speed motor is installed on the conveyor bed; the output shaft of the bidirectional variable speed motor is fixedly connected to the driving spur gear; the vertical rod is fixedly connected to the conveyor bed; the vertical rod is slidably connected to the bushing; the bushing is rotatably connected to the transmission spur gear that cooperates with the driving spur gear; the electric push rod is installed on the conveyor bed; the telescopic end of the electric push rod is fixedly connected to the bushing.

[0006] Preferably, the unlocking member on the side away from the conveyor bed is a long rod member with wedge-shaped guide structures at both ends.

[0007] Preferably, the semi-concave forming module is rotatably connected with double rollers; the double rollers are slidably connected with the sliding groove structure of the conveying machine tool.

[0008] Preferably, the slide rail is made of rubber material.

[0009] Preferably, the semi-convex forming module is composed of a C-shaped module and a C-shaped filling block, both of which are connected to the C-shaped slide groove structure of the semi-concave forming module, and the C-shaped module is close to the C-shaped filling block; the rack is fixed to the C-shaped module.

[0010] Preferably, a limiting sliding rod structure for plugging in the C-shaped module is provided in the C-shaped sliding groove structure of the semi-concave forming module.

[0011] Preferably, the C-shaped filling block is made of permanent magnet material, and the semi-concave forming module is made of steel magnetic material that can be firmly magnetically attracted by the permanent magnet material used in the C-shaped filling block.

[0012] Preferably, a permanent magnet is provided in the insertion hole structure of the conveyor belt; the insertion plate is made of a steel magnetic material that can be firmly magnetically attracted by the permanent magnet.

[0013] Preferably, an infrared electronic counter is installed on the conveyor machine.

[0014] Beneficial effects of the present invention: a PE corrugated pipe forming machine which is convenient for mold replacement of the present invention has two inclined conveyor beds on the mounting frame, the conveyor beds cooperate with the conveyor belt to be connected with a plurality of semi-concave forming modules, a replaceable semi-convex forming module is slidably provided on the semi-concave forming module, and the semi-concave forming module and the semi-convex forming module together constitute a single independent forming mold, wherein the semi-concave forming module is firmly plugged into the conveyor belt through a plug plate, when the unlocking piece removes the plug plate from the conveyor belt, the semi-convex forming module on the semi-concave forming module can be telescopically adjusted by the lifting drive assembly, thereby completing the adjustment of the shape and size of the convex structure of the forming mold, and at the same time, with the help of the feature that the semi-concave forming modules are arranged in a free sliding manner along the inclined unlocking piece, the work of adjusting the spacing between the adjusted forming molds is automatically completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram for describing the structure of the present invention;

[0016] Figure 2 A schematic diagram of the structure of the unlocking member of the present invention is provided;

[0017] Figure 3 A schematic diagram of the structure of a conveyor tool for describing the present invention;

[0018] Figure 4 A schematic diagram of the structure of the lifting drive assembly of the present invention is provided;

[0019] Figure 5 A schematic diagram of the conveyor belt structure for describing the present invention;

[0020] Figure 6 A schematic diagram of the structure of the semi-concave molding module of the present invention is provided;

[0021] Figure 7 The figure is a schematic diagram of the cross-sectional structure of the semi-concave forming module of the present invention.

[0022] Markings in the accompanying drawings: 1-mounting frame, 2-transmission machine tool, 201-slide groove structure, 21-convex belt, 2101-socket structure, 211-permanent magnet sheet, 3-semi-concave forming module, 301-C-shaped slide groove structure, 302-limiting slide rod structure, 31-double roller, 32-semi-convex forming module, 321-C-shaped module, 322-C-shaped filling block, 33-slide rail, 34-rack, 35-plug plate, 36-compression spring, 41-bidirectional variable speed motor, 42-driving spur gear, 43-vertical rod, 44-bushing, 45-transmission spur gear, 46-electric push rod, 5-unlocking piece, 6-infrared electronic counter. DETAILED DESCRIPTION

[0023] The following descriptions are merely preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention.

[0024] Embodiment 1: A PE corrugated pipe forming machine that is easy to replace the mold, such as Figure 1-Figure 7As shown, it includes a mounting frame 1, a conveyor bed 2, a conveyor belt 21, a semi-concave forming module 3, a slide rail 33, a rack 34, a plug plate 35, a compression spring 36, a lifting drive assembly and an unlocking member 5; two conveyor beds 2 that are symmetrical to each other are installed on the mounting frame 1, and the conveyor beds 2 are set to an inclined state facing upward in the conveying direction; two sliding groove structures 201 that are symmetrical to each other are respectively provided on the two conveyor beds 2; a plurality of semi-concave forming modules 3 are slidably connected between the two sliding groove structures 201 on each conveyor bed 2; and a semi-concave forming module 3 is rotatably connected to Two double rollers 31; the semi-concave forming module 3 is slidably connected to the two sliding groove structures 201 of the conveying machine tool 2 through the two double rollers 31, thereby reducing the sliding resistance of the semi-concave forming module 3 in the sliding groove structure 201 of the conveying machine tool 2; each semi-concave forming module 3 is provided with a C-shaped sliding groove structure 301; each C-shaped sliding groove structure 301 on each semi-concave forming module 3 is slidably connected to a semi-convex forming module 32; the semi-concave forming module 3 and the semi-convex forming module 32 together form an independent forming mold; each semi-concave forming module 3 is fixed with a There are two slide rails 33; each slide rail 33 is slidably connected to a rack 34; each rack 34 is respectively fixed to the half-convex molding module 32 on the same half-concave molding module 3; the slide rails 33 are made of rubber material to increase the movement resistance of the rack 34 in the slide rails 33 made of rubber material, so that the rack 34 is not easy to slide relative to the slide rail 33 under normal conditions to cause deviation; each of the two conveyor machines 2 is connected to a lifting drive assembly; the two conveyor machines 2 are respectively rotatably connected to a conveyor belt 21 through an internal drive unit; each of the two conveyor belts 21 is provided with a plurality of A socket structure 2101; each semi-concave forming module 3 is slidably connected to a plug plate 35; each plug plate 35 is respectively plugged into a corresponding socket structure 2101 on an adjacent conveyor belt 21; a compression spring 36 is fixedly connected between each plug plate 35 and the semi-concave forming module 3; the opposite sides of the two conveyor machines 2 are each fixed with an unlocking member 5 aligned with the lower end of the plug plate 35, the unlocking member 5 is parallel to the conveyor machine 2, and the unlocking member 5 away from the conveyor machine 2 uses a long rod component with wedge-shaped guide structures at both ends, and the lower end of the unlocking member 5 is located on the side of the lifting drive assembly.

[0025] like Figure 3 and Figure 4As shown, the lifting drive assembly includes a bidirectional variable speed motor 41, a driving spur gear 42, a vertical rod 43, a bushing 44, a transmission spur gear 45 and an electric push rod 46; the bidirectional variable speed motor 41 is installed on the conveying machine 2; the output shaft of the bidirectional variable speed motor 41 is fixedly connected to the driving spur gear 42; the vertical rod 43 is fixedly connected to the conveying machine 2; the bushing 44 is slidably connected to the vertical rod 43; the bushing 44 is rotatably connected to the transmission spur gear 45 that cooperates with the driving spur gear 42; the electric push rod 46 is installed on the conveying machine 2; the telescopic end of the electric push rod 46 is fixedly connected to the bushing 44.

[0026] like Figure 6 and Figure 7 As shown, the semi-convex forming module 32 is composed of a C-shaped module 321 and a C-shaped filling block 322. Both the C-shaped module 321 and the C-shaped filling block 322 are connected to the C-shaped slide groove structure 301 of the semi-concave forming module 3, and the C-shaped module 321 is close to the C-shaped filling block 322; the rack 34 is fixed to the C-shaped module 321 through a plug-in structure; four limiting slide rod structures 302 are provided in the C-shaped slide groove structure 301 of the semi-concave forming module 3; the four limiting slide rod structures 302 are plugged into the C-shaped module 321 together; the C-shaped filling block 322 uses a permanent magnet material, and the semi-concave forming module 3 uses a steel magnetic material; the C-shaped filling block 322 is firmly magnetically attracted to the steel by the permanent magnet material used On the semi-concave forming module 3 of the magnetic material, the C-shaped filling block 322 is firmly fixed on the semi-concave forming module 3, so that the C-shaped filling block 322 will not be affected by the friction generated during the left and right movement of the C-shaped module 321; when it is necessary to replace the semi-convex forming module 32 with a PE corrugated pipe convex structure that can extrude a larger diameter, the C-shaped module 321 is directly replaced with a larger inner diameter size, and at the same time, the C-shaped filling block 322 needs to be replaced with a larger thickness size to completely fill the C-shaped slide groove structure 301 of the semi-concave forming module 3, so that by replacing the semi-convex forming modules 32 of different sizes, the PE corrugated pipe convex structure with different diameter sizes can be extruded.

[0027] The conventional working steps of the PE corrugated pipe forming machine of the present invention which is convenient for mold replacement are as follows.

[0028] First, the staff connects a PE corrugated pipe forming machine of the present invention which is easy to replace the mold to the outlet end of the screw extruder, and the extrusion guide rod component of the external screw extruder is located between the two conveyor machines 2. When the external screw extruder continuously extrude the PE tubular blank outward, the extruded PE tubular blank moves along the outer surface of the extrusion guide rod component and passes between the two conveyor machines 2. At the same time, the two conveyor machines 2 respectively drive the two conveyor belts 21 to drive the independent forming molds connected to them to run towards each other, so that the forming molds on the front and rear sides are in the step of moving obliquely upward along the inclined conveyor machine 2. The forming molds on the front and rear sides jointly perform corrugated extrusion processing on the outer wall of the PE tubular blank on the outer surface of the extrusion guide rod component, so that the PE tubular blank completes the corrugated extrusion processing part to form a single corrugated PE pipe.

[0029] Afterwards, the conveyor belt 21 drives the forming die to leave the single corrugated PE pipe that has completed the corrugated extrusion process, and drives the forming die to move obliquely downward along the other side of the inclined conveyor bed 2. During this process, the lower end of the plug plate 35 of the forming die will move along the wedge-shaped structure of the unlocking piece 5, allowing the plug plate 35 to leave the socket structure 2101 of the conveyor belt 21 under the guidance of the wedge-shaped structure of the unlocking piece 5. At the same time, the plug plate 35 drives the compression spring 36 to be compressed. After leaving the conveyor belt 21, the plug plate 35 will slide down quickly along the inclined conveyor bed 2 and the unlocking piece 5 obliquely under the action of gravity, allowing the moving die to move downward along the inclined conveyor bed 2 and the unlocking piece 5. The adjacent plug plates 35 in the moving direction are tightly stacked in the lower area of ​​the conveyor bed 2 until the plug plate 35 leaves the wedge-shaped structure on the other side of the unlocking piece 5. At this time, the compressed compression spring 36 promptly pushes the plug plate 35 to be reinserted into the corresponding plug hole structure 2101 of the conveyor belt 21, and the conveyor belt 21 drives the plug plate 35 to move along the conveyor bed 2 to participate in the next round of corrugated extrusion processing, so as to realize the corrugated extrusion processing of each area of ​​the PE tubular blank in succession, so that each area of ​​the PE tubular blank forms a single corrugated PE pipe in succession.

[0030] The adjustment working steps of the PE corrugated pipe forming machine which is convenient for mold replacement of the present invention are as follows.

[0031] When it is necessary to replace and adjust the semi-convex forming module 32 to be able to extrude a PE corrugated pipe convex structure with a larger width, the conveyor belt 21 first drives the forming mold to move obliquely downward along the inclined conveyor bed 2, and the plug plate 35 leaves the socket structure 2101 of the conveyor belt 21 under the guidance of the wedge-shaped structure of the unlocking piece 5. At the same time, the plug plate 35 drives the compression spring 36 to be compressed. After leaving the conveyor belt 21, the plug plate 35 will slide down quickly along the inclined conveyor bed 2 and the unlocking piece 5 under the action of gravity, so that the front and rear adjacent parts of the moving direction are Each plug plate 35 is tightly stacked in the lower area of ​​the conveyor bed 2 until the plug plate 35 leaves the wedge-shaped structure on the other side of the unlocking piece 5. At this time, the compressed compression spring 36 timely pushes the plug plate 35 to be re-inserted into the corresponding socket structure 2101 of the conveyor belt 21, and at this time, the rack 34 on the same half of the recessed forming module 3 is aligned with the driving spur gear 42 front and back, and the bidirectional variable speed motor 41 drives the driving spur gear 42 to rotate. At the same time, the telescopic end of the electric push rod 46 quickly pushes the bushing 44 along the vertical rod 43 to drive the transmission The movable spur gear 45 moves downward, so that the two sides of the transmission spur gear 45 are respectively meshed with the driving spur gear 42 and the rack 34, so that when the driving spur gear 42 drives the transmission spur gear 45 to rotate, the transmission spur gear 45 meshes with the rack 34 and drives it to move along the slide rail 33, so that the rack 34 pulls the semi-convex forming module 32 to move outward along the semi-concave forming module 3, thereby increasing the width of the convex structure of the forming mold. At the same time, the semi-convex forming module 32 moving outward will push the remaining forming molds closely attached to it to move away from the semi-concave forming module 3 along the unlocking piece 5, thereby automatically adjusting the spacing between the forming molds. After that, the telescopic end of the electric push rod 46 quickly pulls the bushing 44 along the vertical rod 43 to drive the transmission spur gear 45 to move upward away from the driving spur gear 42 and the rack 34, so that the forming mold that completes the convex structure width adjustment and spacing adjustment maintains the current state to participate in the subsequent corrugated extrusion processing work, and the corrugated extrusion processing with a wider convex structure is successively and continuously performed in various areas of the PE tubular blank.

[0032] Example 2: Figure 1-Figure 7 As shown, on the basis of Example 1, a permanent magnetic sheet 211 is provided in each socket structure 2101 of the conveyor belt 21 of this embodiment; the plug plate 35 uses a steel magnetic material; the plug plate 35 is initially magnetically attracted to the corresponding permanent magnetic sheet 211 by using the steel magnetic material, thereby improving the firmness of the plug plate 35 in the socket structure 2101 of the conveyor belt 21.

[0033] Example 3: Figure 1-Figure 7As shown, on the basis of Example 1, an infrared electronic counter 6 is installed on each of the two conveyor machines 2 of this embodiment; an alarm system is installed on the infrared electronic counter 6; when each semi-concave molding module 3 passes through the infrared electronic counter 6, the infrared electronic counter 6 promptly records the time when the semi-concave molding module 3 passes through, and at the same time, the infrared electronic counter 6 analyzes whether the time interval between the passing time of two adjacent semi-concave molding modules 3 meets the specified time interval standard. If the infrared electronic counter 6 analyzes that the time interval between the passing time of two adjacent semi-concave molding modules 3 exceeds the specified time interval standard, it means that there is an excessively large spacing distance between the two adjacent semi-concave molding modules 3. At this time, the infrared electronic counter 6 promptly notifies the staff to conduct manual inspection through the installed alarm system.

[0034] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A PE corrugated pipe forming machine that is easy to replace molds, comprising: a mounting frame (1); It is characterized in that It also includes a conveyor machine (2); two conveyor machines (2) are installed on the mounting frame (1), and the conveyor machines (2) are arranged in an upwardly inclined state along the conveying direction; a sliding groove structure (201) is provided on the conveyor machine (2); a plurality of semi-concave forming modules (3) are slidably connected between the sliding groove structures (201) on the conveyor machine (2); each semi-concave forming module (3) is provided with a C-shaped sliding groove structure (301); a semi-convex forming module (32) is slidably connected in the C-shaped sliding groove structure (301) on the semi-concave forming module (3); the semi-concave forming module (3) and the semi-convex forming module (32) together form an independent forming mold; a slide rail (33) is fixedly connected to the semi-concave forming module (3); a rack (34) is slidably connected to the slide rail (33); the rack (34) is fixedly connected to the same semi-concave forming module (3); a semi-convex forming module (32) on the conveyor bed (2); a lifting drive assembly for controlling the movement of each rack (34) is connected to the conveyor bed (2); the conveyor bed (2) is rotatably connected to the conveyor belt (21) through an internal drive unit; a plurality of plug-in structures (2101) are provided on the conveyor belt (21); a plug-in plate (35) is slidably connected to the semi-concave forming module (3); the plug-in plate (35) is plugged into the corresponding plug-in structure (2101) on the adjacent conveyor belt (21); a compression spring (36) is fixedly connected between the plug-in plate (35) and the semi-concave forming module (3); an unlocking member (5) is fixedly connected to the opposite sides of the two conveyor beds (2) for separating the plug-in plate (35) from the plug-in structure (2101) of the conveyor belt (21), the unlocking member (5) is parallel to the conveyor bed (2), and the lower end of the unlocking member (5) is located on one side of the lifting drive assembly; Both ends of the unlocking member (5) are provided with long rod parts with wedge-shaped guide structures on the side away from the conveying machine bed (2); The lifting drive assembly comprises a bidirectional variable speed motor (41); the bidirectional variable speed motor (41) is installed on the conveying machine (2); the output shaft of the bidirectional variable speed motor (41) is fixedly connected to a driving spur gear (42); a vertical rod (43) is fixedly connected to the conveying machine (2); a bushing (44) is slidably connected to the vertical rod (43); a transmission spur gear (45) is rotatably connected to the bushing (44) and cooperates with the driving spur gear (42) to work; an electric push rod (46) is installed on the conveying machine (2); the telescopic end of the electric push rod (46) is fixedly connected to the bushing (44); The semi-convex part forming module (32) is composed of a C-shaped module (321) and a C-shaped filling block (322); the C-shaped module (321) and the C-shaped filling block (322) are both connected to the C-shaped slide groove structure (301) of the semi-concave part forming module (3), and the C-shaped module (321) is closely attached to the C-shaped filling block (322); the rack (34) is fixedly connected to the C-shaped module (321).

2. A PE corrugated pipe forming machine that is easy to replace molds according to claim 1, characterized in that: A double roller (31) is rotatably connected to the semi-concave portion forming module (3); the double roller (31) is slidably connected to a sliding groove structure (201) of a conveying machine tool (2).

3. A PE corrugated pipe forming machine that is easy to replace molds according to claim 1, characterized in that: The slide rail (33) is made of rubber material.

4. A PE corrugated pipe forming machine that is easy to replace molds according to claim 1, characterized in that: A limiting sliding rod structure (302) for plugging in the C-shaped module (321) is provided in the C-shaped sliding groove structure (301) of the semi-concave portion forming module (3).

5. The PE corrugated pipe forming machine for easy mold replacement according to claim 1, characterized in that: The C-shaped filling block (322) is made of a permanent magnet material, and the semi-concave portion forming module (3) is made of a steel magnetic material that can be firmly magnetically attracted by the permanent magnet material used in the C-shaped filling block (322).

6. A PE corrugated pipe forming machine that is easy to replace molds according to claim 1, characterized in that: A permanent magnetic sheet (211) is arranged in the insertion hole structure (2101) of the conveyor belt (21); and the insertion plate (35) is made of a steel magnetic material that can be firmly magnetically attracted by the permanent magnetic sheet (211).

7. A PE corrugated pipe forming machine that is easy to replace molds according to any one of claims 1 to 6, characterized in that: An infrared electronic counter (6) is installed on the conveyor machine (2).

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