Double-wall corrugated pipe machining and forming mechanism

Abstract

The utility model belongs to the field of double-wall corrugated pipe machining, and discloses a double-wall corrugated pipe machining and forming mechanism which comprises a rack device used for bearing and moving and further comprises a shaping device installed on the rack device and used for continuous horizontal conveying, clamping and injection molding. An auxiliary device for limiting, pressing, cooling and demolding is arranged above the shaping device; the auxiliary device comprises a fixing frame, a limiting frame is installed on the fixing frame, a cooling assembly used for conveying cold air for cooling is arranged on one side of the limiting frame, and a demolding assembly used for expanding demolding is arranged on one side of the cooling assembly. According to the double-wall corrugated pipe machining and forming mechanism, the forming die is tightly closed through clamping of the limiting block and the limiting frame, it is guaranteed that no gap exists in the injection molding stage, and the product forming precision is improved; cold air of the cooling assembly passes through the air inlet pipe, the cooling frame, the air outlet nozzle and the interior of the forming die, an efficient directional cooling path is formed, waste gas / waste water is discharged in cooperation with the waste discharging hole, cooling is accelerated, internal stress is reduced, and the pipe quality is improved.

Description

Technical Field

[0001] This utility model belongs to the field of double-wall corrugated pipe processing, and in particular relates to a double-wall corrugated pipe processing and forming mechanism. Background Technology

[0002] Double-wall corrugated pipe is a type of plastic pipe widely used in municipal drainage, communication cable protection, and other fields. Its processing incorporates multiple advanced technologies, resulting in unique structural characteristics. The molding process employs co-extrusion technology, with two extruders responsible for extruding the inner and outer walls respectively. The inner wall extruder uses a precision die to form a smooth inner tube, while the outer wall extruder, in conjunction with a rotary molding module, uses air pressure to create a regular annular corrugated structure on the outer wall.

[0003] Comparing with Chinese Patent No. CN214820697U, a pressure forming mechanism for a double-wall corrugated pipe processing device is disclosed, including two conveying components, multiple pressure molds, and two pressure components. Each conveying mechanism includes a conveying chain and a conveying drive component. The conveying chain has an arc and its ends are connected sequentially to form a loop. The conveying drive component is connected to the conveying chain to drive the conveying chain to move cyclically along the loop formed by the ends. The two conveying chains are symmetrically arranged on opposite sides of the machine head, and the machine head is located on the conveying path of the two conveying chains, which can enhance the tightness of the clamping blocks.

[0004] However, the aforementioned patented ejector pin has a short pushing time on the mold, which cannot achieve a long-term tight closure and cannot ensure a seamless process throughout the injection molding stage, thus reducing the product molding accuracy. Therefore, a new device needs to be designed. Utility Model Content

[0005] The purpose of this invention is to provide a double-walled corrugated pipe processing and forming mechanism to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A double-wall corrugated pipe processing and forming mechanism includes a frame device for supporting movement, and a shaping device mounted on the frame device for continuous horizontal conveying and clamping injection molding. An auxiliary device for limiting, pressing, cooling, and demolding is provided above the shaping device. The shaping device includes two symmetrically arranged feeding components for continuous synchronous conveying. Mold components for clamping injection molding are mounted on the two feeding components. The mold components are symmetrically divided into two halves, correspondingly mounted on the two feeding components. The auxiliary device includes a fixing frame, on which a limiting frame is mounted. A cooling component for conveying cold air for cooling is provided on one side of the limiting frame, and a demolding component for expansion and demolding is provided on the other side of the cooling component.

[0008] Furthermore: the frame device includes a base plate, on which two worktables are symmetrically arranged, and each worktable is provided with a drive assembly for providing synchronous power, and each worktable is symmetrically provided with a number of support rollers.

[0009] Furthermore: the drive assembly includes a synchronous motor mounted on one end of the bottom of the worktable, a drive shaft provided at the conveying end of the synchronous motor, and a support shaft provided at the end of the worktable away from the synchronous motor.

[0010] Furthermore: the feeding assembly includes two symmetrically arranged conveyor rollers, and a conveyor belt is installed between the conveyor rollers. The conveyor belt is a toothed synchronous belt; the mold assembly includes a forming mold, and two limiting blocks are symmetrically arranged on the top of the forming mold. An air inlet is provided in the middle of the limiting blocks, and a waste discharge hole is provided on the bottom surface of the forming mold.

[0011] Furthermore: the molding die has a hollow structure, and one end of the limiting block is provided with a guide angle.

[0012] Furthermore: the cooling assembly includes a cooling rack, an air inlet pipe is provided on the top of the cooling rack, and a number of air outlets are symmetrically distributed at the bottom of the cooling rack; the demolding assembly includes a suspension frame, a screw is provided on the suspension frame, a locking nut is installed on the screw, and a number of expansion heads are symmetrically distributed at the bottom of the suspension frame.

[0013] Furthermore, the expansion head is spherical and is riveted together with the suspension frame.

[0014] Compared with existing technologies, the beneficial effects are:

[0015] 1. The molding die is tightly closed by the clamping of the limiting block and the limiting frame, ensuring no gaps during the injection molding stage and improving the molding accuracy of the product; the cold air of the cooling component passes through the air inlet pipe → cooling frame → air outlet → inside the molding die, forming an efficient directional cooling path, which, together with the waste discharge hole, discharges waste gas / wastewater, accelerates cooling and reduces internal stress, and improves the quality of the pipe.

[0016] 2. The guide angle design of the limiting block allows the expansion head to smoothly push the forming mold apart, forming a gap and avoiding damage caused by forced demolding; the screw and locking nut structure of the suspension frame can adjust the height of the expansion head to adapt to different mold specifications and enhance flexibility;

[0017] 3. The synchronous motors on the dual worktables drive the drive shaft, which, together with the support shaft, enables the conveyor rollers to rotate synchronously. This ensures that the molding die moves in a cyclical manner with the assistance of the support rollers, forming a continuous process of injection molding → cooling → demolding, which significantly improves production efficiency. The feeding assembly uses a toothed synchronous belt to work with the conveyor rollers to ensure the synchronicity and stability of the molding die movement, avoiding the slippage problem of traditional chain drives.

[0018] 4. The workbench support rollers and conveyor belt work together to support the forming mold, reducing vibration and offset, and ensuring smooth movement. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the double-wall corrugated pipe processing and forming mechanism described in this utility model;

[0020] Figure 2 This is a schematic diagram of the frame device of the double-wall corrugated pipe processing and forming mechanism described in this utility model;

[0021] Figure 3 This is a right view of the frame device of the double-wall corrugated pipe processing and forming mechanism described in this utility model;

[0022] Figure 4 This is a schematic diagram of the shaping device of the double-wall corrugated pipe processing and forming mechanism described in this utility model;

[0023] Figure 5 This is a schematic diagram of the mold assembly of the double-wall corrugated pipe processing and forming mechanism described in this utility model;

[0024] Figure 6 This is a schematic diagram of the auxiliary device of the double-wall corrugated pipe processing and forming mechanism described in this utility model.

[0025] In the attached diagram, the following are the reference numerals: 101, base plate; 102, worktable; 103, synchronous motor; 104, drive shaft; 105, support shaft; 106, support roller; 201, conveyor roller; 202, conveyor belt; 203, forming mold; 204, limiting block; 205, air inlet; 206, waste discharge hole; 207, guide angle; 301, fixing frame; 302, limiting frame; 303, cooling frame; 304, air inlet pipe; 305, air outlet; 306, suspension frame; 307, screw; 308, locking nut; 309, expansion head. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1-6A double-wall corrugated pipe processing and forming mechanism includes a frame device for supporting movement, and a shaping device mounted on the frame device for continuous horizontal conveying and clamping injection molding. An auxiliary device for limiting, pressing, cooling and demolding is provided above the shaping device.

[0028] In this embodiment: the frame device includes a base plate 101, on which two worktables 102 are symmetrically arranged. Each worktable 102 is equipped with a drive assembly for providing synchronous power. Each worktable 102 is symmetrically equipped with several support rollers 106. The drive assembly includes a synchronous motor 103 mounted at one end of the bottom of the worktable 102, a drive shaft 104 at the conveying end of the synchronous motor 103, and a support shaft 105 at the end of the worktable 102 away from the synchronous motor 103. The base plate 101 supports the synchronous motor 103 through the two worktables 102 and drives the conveyor roller 201 to rotate through the drive shaft 104. The conveyor roller 201 at the other end rotates under the support of the support shaft 105, so that the conveyor belt 202 drives the forming mold 203 to move cyclically under the auxiliary support of the support rollers 106 on the worktable 102.

[0029] In this embodiment: the shaping device includes two symmetrically arranged feeding components for continuous synchronous conveying. Mold components for clamping injection molding are mounted on the two feeding components. The mold components are symmetrically divided into two halves, correspondingly mounted on the two feeding components. The feeding components include two symmetrically arranged conveyor rollers 201, with a conveyor belt 202 installed between the conveyor rollers 201. The conveyor belt 202 is a toothed synchronous belt. The mold components include a forming mold 203. Two limiting blocks 204 are symmetrically arranged on the top of the forming mold 203. An air inlet 205 is provided in the middle of each limiting block 204. 3. A waste discharge hole 206 is provided on the bottom surface; the molding mold 203 is a hollow structure, and a guide angle 207 is provided at one end of the limiting block 204; the conveying roller 201 pushes the conveyor belt 202 to drive the molding mold 203 to move cyclically on the worktable 102 with the auxiliary support of the support roller 106, forming a closed injection molding and separation discharge cycle. The guide angle 207 at the end of the limiting block 204 is used to guide the limiting block 204 to move smoothly. Cold air is injected into the molding mold 203 through the air inlet 205 at the top of the limiting block 204 for cooling and temperature reduction. The waste gas and condensed wastewater flow out from the waste discharge hole 206.

[0030] In this embodiment: the auxiliary device includes a fixed frame 301, on which a limiting frame 302 is installed. A cooling component for conveying cold air for cooling is provided on one side of the limiting frame 302, and a demolding component for expansion and demolding is provided on the other side of the cooling component. The cooling component includes a cooling frame 303, with an air inlet pipe 304 at the top and several air outlets 305 symmetrically distributed at the bottom. The demolding component includes a suspension frame 306, with a screw 307 on the suspension frame 306 and a locking nut 308 installed on the screw 307. Several expansion heads 309 are symmetrically distributed at the bottom of the suspension frame 306. The expansion heads 309 are spherical and riveted together with the suspension frame 306. When the molding mold 203 moves to the closed injection molding position, the limiting block 204 at the top of the molding mold 203 enters the limiting frame 302 supported by the fixed frame 301 under the guidance of the guide angle 207. Inside, the limiting frame 302 holds the molding mold 203 tightly closed by the limiting block 204 to complete the injection molding. Then, the molding mold 203 continues to move to the bottom of the cooling frame 303. The cold air supplied by the external equipment flows in from the air inlet pipe 304, passes through the cooling frame 303, and is sprayed out from the air outlet 305. It is poured into the molding mold 203 through the air inlet 205 on the top of the limiting block 204 for cooling. The exhaust gas and condensed waste water flow out from the exhaust outlet 206. Then, the molding mold 203 continues to move past the suspension frame 306. The suspension frame 306, guided by the guide angle 207 through the expansion head 309, pushes the corresponding limiting block 204 to cause the molding mold 203 to have a separation gap, so that when the molding mold 203 moves to the separation point, it can be easily demolded and discharged. The screw 307 on the suspension frame 306 is used to pass through the fixing frame 301 and tighten the locking nut 308 to fix and adjust the height of the expansion head 309.

[0031] Working principle: The base plate 101 supports the synchronous motor 103 via two worktables 102, which simultaneously drives the conveyor roller 201 to rotate via the drive shaft 104. The other end of the conveyor roller 201 rotates under the support of the support shaft 105, causing the conveyor belt 202 to drive the molding die 203 to move cyclically on the worktable 102 with the auxiliary support of the support roller 106, forming a closed injection molding and separation discharge cycle. When the molding die 203 moves to the closed injection molding position, the limiting block 204 at the top of the molding die 203 enters the limiting frame 302 supported by the fixed frame 301 under the guidance of the guide angle 207. The limiting frame 302 holds the molding die 203 tightly closed by the limiting block 204 to complete the injection molding. Then the molding die 203 continues to move to the cooling position. Below the cooling frame 303, cold air supplied by external equipment flows in through the air inlet pipe 304, passes through the cooling frame 303, and is sprayed out from the air outlet 305. It is then injected into the molding mold 203 through the air inlet 205 on the top of the limiting block 204 for cooling. The exhaust gas and condensed wastewater flow out from the waste outlet 206. Then the molding mold 203 continues to move past the suspension frame 306. Under the guidance of the guide angle 207, the suspension frame 306 pushes the corresponding limiting block 204 through the expansion head 309, causing the molding mold 203 to have a separation gap. This facilitates the smooth demolding and material discharge when the molding mold 203 moves to the separation point. The screw 307 on the suspension frame 306 is used to pass through the fixing frame 301 and tighten the locking nut 308 to fix and adjust the height of the expansion head 309.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A double-wall corrugated pipe processing and forming mechanism, comprising a frame device for supporting movement, characterized in that: It also includes a shaping device installed on the frame assembly for continuous horizontal conveying and clamping of injection molding, and an auxiliary device for limiting, pressing, cooling and demolding is provided above the shaping device; The shaping device includes two symmetrically arranged feeding components for continuous synchronous conveying. The two feeding components are equipped with mold components for clamping injection molding. The mold components are symmetrically arranged in two halves and are correspondingly installed on the two feeding components. The auxiliary device includes a fixed frame (301), on which a limiting frame (302) is installed. A cooling component for conveying cold air for cooling is provided on one side of the limiting frame (302), and a demolding component for expansion demolding is provided on one side of the cooling component.

2. The double-wall corrugated pipe processing and forming mechanism according to claim 1, characterized in that: The frame device includes a base plate (101), on which two worktables (102) are symmetrically arranged. Each worktable (102) is provided with a drive assembly for providing synchronous power, and each worktable (102) is symmetrically provided with a plurality of support rollers (106).

3. The double-wall corrugated pipe processing and forming mechanism according to claim 2, characterized in that: The drive assembly includes a synchronous motor (103) mounted on one end of the bottom of the worktable (102), a drive shaft (104) provided on the conveying end of the synchronous motor (103), and a support shaft (105) provided on the end of the worktable (102) away from the synchronous motor (103).

4. The double-wall corrugated pipe processing and forming mechanism according to claim 1, characterized in that: The feeding assembly includes two symmetrically arranged conveyor rollers (201), and a conveyor belt (202) is installed between the conveyor rollers (201). The conveyor belt (202) is a toothed synchronous belt. The mold assembly includes a forming mold (203). The forming mold (203) has two symmetrically arranged limit blocks (204) on its top. The limit blocks (204) have an air inlet (205) in the middle. The forming mold (203) has a waste discharge hole (206) on its bottom surface.

5. The double-wall corrugated pipe processing and forming mechanism according to claim 4, characterized in that: The molding die (203) has a hollow structure, and one end of the limiting block (204) is provided with a guide angle (207).

6. The double-wall corrugated pipe processing and forming mechanism according to claim 1, characterized in that: The cooling assembly includes a cooling rack (303), with an air inlet pipe (304) at the top and several air outlets (305) symmetrically distributed at the bottom. The demolding assembly includes a suspension frame (306), with a screw (307) on the suspension frame (306), a locking nut (308) installed on the screw (307), and several expansion heads (309) symmetrically distributed at the bottom.

7. The double-wall corrugated pipe processing and forming mechanism according to claim 6, characterized in that: The expansion head (309) is spherical and is riveted together with the suspension bracket (306).

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